2024-03-28T16:49:36Z
https://ejournals.umn.ac.id/index.php/SK/oai
oai:ojs.pkp.sfu.ca:article/231
2021-03-22T01:28:47Z
SK:ART
Klasifikasi Citra Daun dengan Metode Gabor Co-Occurence
Muchtar, Mutmainnah
Cahyani, Laili
Plant takes a crucial part in mankind existences. The development of digital image processing technique made the plant classification task become a lot of easier. Leaf is a part of plant that can be used for plant classification where texture of the leaf is a common feature that been used for classification process. Texture offers a unique feature and able to work even when the leaf is damaged or overly big in size which sometimes made the acquisition process become more difficult. This study offers a combination of Gabor filter methods and co-occurrence matrices to produce the most representative features for leaf classification. Classification using SVM with 5-fold cross validation system shows that the proposed Gabor Co-Occurence methods was able to reach average accuracy up to 89.83%.
Terms: Leaf, Gabor Co-occurence, Support Vector Machine, Texture
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/231
10.31937/sk.v7i2.231
ULTIMA Computing; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 39-47
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 39-47
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/231/203
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/232
2021-03-22T01:28:44Z
SK:ART
Rancang Bangun Sistem Pakar untuk Deteksi Dini Katarak Menggunakan Algoritma C4.5
Jayawardanu, Ivana Herliana W.
Hansun, Seng
In 2010, 51% of 39 million blindness are caused by cataract. In 2013, there are 1.8% of 1.027.763 Indonesian people who suffered from cataract. Half of them are not treated yet due to their ignorance on the cataract disease. Therefore, in this research, we tried to build a system that can detect early cataract disease as the ophthalmologist would do. The system will use C4.5 algorithm that receives 150 training data set as an input, resulting in a set of rules which can be used as decision factors. To test the system, k-fold cross validation technique is been used with k equals to 10. From the analysis result, the accuracy of the system is 93.2% to detect cataract disease and 80.5% to detect the type of cataract disease one might suffered.
Index terms-C4.5 algorithm, cataract, k-fold cross validation, machine learning
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/232
10.31937/sk.v7i2.232
ULTIMA Computing; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 48-58
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 48-58
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/232/204
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/233
2021-03-22T01:28:42Z
SK:ART
Penerapan Metode Certainty Factor dalam Sistem Pakar Pendeteksi Resiko Osteoporosis dan Osteoarthritis
Halim, Stephanie
Hansun, Seng
Osteoporosis is commonly referred to “thinning” and osteoarthritis referred to “calcification”, but people giving wrong action treatment of these two diseases. Therefore, the aim of this study is to develop an android-based application to identify the risk of osteoporosis and osteoarthritis. To identify that risk was processed using certainty factor method. Certainty factor method related about event based on facts, which the source of those facts are from expert and assumed with a value, called certainty factor. From the testing result, the accuracy of this expert system is about 80%.
Index Terms - Certainty factor, disease diagnose, expert system, osteoarthritis, osteoporosis
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/233
10.31937/sk.v7i2.233
ULTIMA Computing; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 59-69
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 59-69
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/233/205
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/234
2021-03-22T01:28:39Z
SK:ART
Ancaman Keamanan pada Transport Layer Security
Fadhli, Muhamad
Munshi, Fityan Ali
Wicaksono, Taufik Adi
Secure Socket Layer (SSL) also known as Transfer Layer Security (TLS) is de facto standard for web security. It provides confidentiality and integrity of information in transit across the public networks using their powerful cipher suites but it still contains some loopholes or flaws in its foundation. In this paper we discuss TLS standard along with various attacks found in recent years, such as BEAST, CRIME, BREACH, Lucky 13, and their proposed mitigation.
Index Terms— Attack, Compression, Mitigation, Security, TLS.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/234
10.31937/sk.v7i2.234
ULTIMA Computing; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 70-75
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 70-75
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/234/206
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/283
2021-03-22T01:29:14Z
SK:ART
Desain dan Implementasi Honeypot dengan Fwsnort dan PSAD sebagai Intrusion Prevention System
Tambunan, Bosman
Raharjo, Willy Sudiarto
Purwadi, Joko
Teknologi Internet saat ini tidak lepas dari banyak masalah ataupun celah keamanan. Banyaknya celah keamanan ini dimanfaatkan oleh orang yang tidak berhak untuk mencuri data-data penting. Kasus serangan terjadi karena pihak yang diserang juga tidak menyadari pentingnya keamanan jaringan untuk diterapkan pada sistem yang dimiliki. Honeypot yang dipadu dengan IPS menggunakan PSAD dan Fwsnort memberikan solusi untuk masalah tersebut. IPS berfungsi sebagai sistem yang bekerja memantau aktivitas jaringan yang melalui sistem IPS pada mode inline dan memblokir alamat IP yang mencurigakan setelah data stream dicocokan dengan signature yang ada, sedangkan Honeypot bekerja untuk mengetahui aktivitas penyerang dan semua aktivitas yang menuju pada honeypot dianggap mencurigakan. Hasil penelitian menunjukkan bahwa kemampuan Honeypot yang dipadu dengan IPS PSAD dan Fwsnort dapat saling melengkapi dalam mendeteksi serangan yang tidak diketahui oleh sistem IPS. Sistem ini juga menghasilkan log data yang dapat digunakan oleh administrator dalam menanggulangi serangan yang terjadi.
Kata kunci—intrusion prevention system, honeypot, psad, fwsnort, honeyd
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2013-09-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/283
10.31937/sk.v5i1.283
ULTIMA Computing; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 1-7
Ultima Computing : Jurnal Sistem Komputer; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 1-7
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/283/249
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/284
2021-03-22T01:29:12Z
SK:ART
Penambahan Layanan pada Firmware DD-WRT untuk Wireless Router Linksys WRT160NL
Lokananta, Felix
Nugroho I., Hargyo Tri
Jaringan wireless LAN banyak digunakan dalam perkantoran yang memberikan keuntungan seperti Samba Server, Printer, Squid Server, dan Torrent Client. Namun pada umumnya dibutuhkan paling tidak sebuah komputer untuk menjalankan layanan-layanan tersebut. Dalam jaringan wireless LAN dibutuhkan perangkat wireless router yang dilengkapi dengan firmware agar bisa berjalan dengan baik. Firmware DD-WRT dinyatakan sebagai firmware open source yang memberikan keleluasaan kepada user untuk menambahkan layanan pada sebuah wireless router. Penelitian ini bertujuan untuk mempelajari penambahan layanan pada wireless router berbasis DDWRT serta menguji kinerja layanan yang ditambahkan tersebut pada wireless router. Hasil pengujian menunjukkan DD-WRT dapat digunakan sebagai firmware alternatif untuk memenuhi kebutuhan layanan pada skala kecil. Namun, penambahan layanan ini harus memperhatikan spesifikasi wireless router.
Keywords—DD-WRT, wireless router, firmware, samba, squid
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2013-09-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/284
10.31937/sk.v5i1.284
ULTIMA Computing; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 8-12
Ultima Computing : Jurnal Sistem Komputer; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 8-12
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/284/250
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/285
2021-03-22T01:29:09Z
SK:ART
Pengukuran Beban Komputasi Algoritma Dijkstra, A*, dan Floyd-Warshall pada Perangkat Android
Djojo, Michael Alexander
Karyono, Karyono
Perkembangan teknologi di bidang komunikasi menciptakan berbagai kemudahan bagi pengguna untuk melakukan pertukaran informasi tanpa mengenal jarak secara geografis. Pada jaringan komunikasi, pertukaran informasi memerlukan pengaturan rute sehingga dicapai jalur terpendek untuk mengoptimalkan proses pengiriman data. Penelitian untuk mencari algoritma jalur terpendek masih terus dilakukan. Penelitian ini membandingkan algoritma Dijkstra, A*, dan Floyd-Warshall dari sisi waktu, beban komputasi dan penggunaan memori. Topologi yang digunakan dalam penelitian adalah topologi jaringan mesh karena dapat mewakili kondisi nyata. Aplikasi berbasis Android dapat digunakan sebagai simulator untuk memetakan vertice dan edge ke dalam kumpulan node dan channel yang saling berhubungan. Kompleksitas komputasi dalam pencarian jalur terpendek menjadi hal yang penting karena terdapat keterbatasan prosesor dan memori. Kompleksitas rute akan sebanding dengan skala jaringan mesh. Dari simulasi diperoleh nilai beban komputasi dan waktu simulasi yang sebanding dengan fungsi kuadrat jumlah simpul untuk ketiga algoritma tersebut. Hasil pengujian menunjukkan algoritma A* memiliki beban komputasi dan waktu simulasi yang paling kecil dibandingkan algoritma Dijkstra dan Floyd-Warshall tanpa mempengaruhi hasil pencarian rute terpendek. Hal ini disebabkan algoritma A* melakukan operasi pencarian dengan memanfaatkan nilai heuristik terhadap simpul tujuan, sehingga tidak semua simpul dilakukan pengecekan. Namun algoritma Dijkstra paling unggul dalam penggunaan memori. Floyd-Warshall menghasilkan nilai kompleksitas yang buruk pada proses pancarian jalur, semua data bobot kanal akan ditampung ke dalam matriks dua dimensi lalu diproses menggunakan operasi perulangan yang bertingkat.
Kata kunci - shortestpath, djikstra, a*, floyd-warshall, weighted graph, mesh, android
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2013-09-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/285
10.31937/sk.v5i1.285
ULTIMA Computing; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 13-17
Ultima Computing : Jurnal Sistem Komputer; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 13-17
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/285/251
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/286
2021-03-22T01:29:07Z
SK:ART
Pengurangan Noise Sepeda Motor dan Mesin Diesel dari Sinyal Bicara dengan Algoritma Recursive Least Square
Hugeng, Hugeng
Setyaningsih, Endah
Wulandari, Meirista
Adanya bunyi kendaraan bermotor yang tercampur dengan suara seseorang yang sedang berbicara dapat mengganggu suatu sistem contohnya pada sistem speech recognition sehingga perintah terhadap sistem tersebut tak dapat dikerjakan. Ada beberapa cara yang dapat digunakan untuk mengatasi masalah gangguan noise yaitu salah satunya menggunakan filter adaptif dengan metode Adaptive Noise Cancellation (ANC). ANC menghilangkan noise yang tercampur dengan suatu sinyal berdasarkan noise referensi. ANC ini terdiri dari 2 bagian yaitu filter digital dan algoritma adaptif. Filter digital FIR dan algoritma adaptif RLS digunakan pada sistem ini. Pemfilteran menggunakan perangkat lunak Matlab secara simulasi dan hasil filter berupa sinyal estimasi. Keberhasilan sistem pengurangan noise ini dapat dilihat berdasarkan parameter Mean Square Error (MSE). Hasil parameter yang didapat menunjukkan bahwa sistem ini bisa mengurangi noise sepeda motor dan mesin diesel yang tercampur dengan sinyal bicara walau pun nilai MSE yang dihasilkan cukup besar.
Keywords - Adaptive, Filter, ANC, RLS
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2013-09-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/286
10.31937/sk.v5i1.286
ULTIMA Computing; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 18-25
Ultima Computing : Jurnal Sistem Komputer; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 18-25
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/286/252
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/287
2021-03-22T01:29:04Z
SK:ART
Proxy Selector Berbasis Link-State
Tunggawan, Edwin
Nugroho I., Hargyo Tri
Pemilihan proxy server yang digunakan untuk menjelajah web seringkali dilakukan secara manual oleh pengguna. Proses ini dapat diotomatisasi dengan menggunakan aplikasi proxy selector. Pada penelitian ini, proxy selector dikembangkan dengan mengadaptasi algoritma link-state. Algoritma disesuaikan untuk pemilihan proxy. Aplikasi juga diberikan kemampuan untuk melakukan prediksi dengan menggunakan perhitungan moving average untuk menghitung perkiraan performa proxy server yang diuji. Untuk mendapatkan hasil perhitungan yang lebih akurat, diilakukan percobaan untuk menentukan panjang periode (n) moving average yang paling baik dengan menggunakan perhitungan mean squared error terhadap data. Dari hasil perhitungan tersebut, didapatkan panjang periode yang memberikan hasil prediksi terbaik pada data percobaan.
Keywords—proxy selector, link-state, moving average, mean squared error
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2013-09-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/287
10.31937/sk.v5i1.287
ULTIMA Computing; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 22-25
Ultima Computing : Jurnal Sistem Komputer; Vol 5 No 1 (2013): Ultima Computing : Jurnal Sistem Komputer; 22-25
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/287/253
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/288
2021-03-22T01:29:02Z
SK:ART
Sistem Pengingat Safety Riding bagi Pengemudi Mobil Pribadi
Hugeng, Hugeng
Syamsudin, Eko
Putra, Hadytio
The purpose of the utility of safety belt is to minimize the impact that could occur in a car accident. Safety belt consists of two main parts; i.e. transverse diagonal sash belt and lap belt that lies horizontally on the abdomen. Both parts make a form of continuous network that securing the driver. The main problem in the usage of safety belt is that many drivers ignored the function of the safety belt and did not use it. Some drivers tightened one part of the belt only, others even did not use it at all. Facing this problem, a model was designed in this research that can always remind and force the drivers to use their safety belt. Additional features were detection system for car speed and for driver’s head position. This designed device consists of several main components such as microcontrollers, limit switches, heat sensors, sound system, an accelerometer, and potentiometers. Some components were designed based on separate modules and merged into a single unit device that can always remind drivers to use safety belts correctly. Based on the results of the conducted experiments, the system can function correctly in which it always perfomed rechecking of each parameter.
Index Terms - microcontroller, safety riding system
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2014-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/288
10.31937/sk.v6i1.288
ULTIMA Computing; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 1-6
Ultima Computing : Jurnal Sistem Komputer; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 1-6
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/288/254
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/289
2021-03-22T01:28:59Z
SK:ART
Segmentasi pada Citra Panoramik Gigi dengan Metode Two-Stage SOM dan T-CLUSTER
Umam, Khoirul
Putro, Fidi Wincoko
Pratamasunu, Gulpi Qorik Oktagalu
Segmentation on medical image requires good quality due to affect the interpretation and diagnosis of medical experts. On medical image segmentation, there is merging phase to increase the quality of the segmentation result. However, stopping criteria on merging phase was determined manually by medical experts. It implied the subjectivity of segmentation result. To increase the objectivity of segmentation result, a method to automate merging phase on medical image segmentation is required. Therefore, we propose a novel method on medical image segmentation which combine two-stage SOM and T-cluster method. Experiments were performed on dental panoramic as medical image sample and evaluated by using segmentation quality formula. Experiments show that the proposed method can perform segmentation on dental panoramic image automatically and objectively with the best average of segmentation quality value is 4,40.
Index Terms—dental panoramic image, image segmentation, medical image, Self-Organizing Map, T-cluster
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2014-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/289
10.31937/sk.v6i1.289
ULTIMA Computing; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 7-13
Ultima Computing : Jurnal Sistem Komputer; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 7-13
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/289/255
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/290
2021-03-22T01:28:57Z
SK:ART
Klasifikasi Artikel Berita Online Sederhana dengan Menggunakan Struktur Kategori Wikipedia
Aprilius, William
The growth of information and communication technology makes the electronic news portal as a source of information. It makes the increasing numbers of online news articles that need to be classified. The classification is done to facilitate the users to access news. This paper proposes a simple method of classification of online news articles into categories. This method uses Wikipedia Bahasa Indonesia as a source of external knowledge and consists of 6 steps. In general, this method works by exploiting the structure of categories in Wikipedia, then check for the existence of entities of a news article in Wikipedia articles. This paper is an early stage of the research to be conducted and the proposed method has not been implemented. This makes the researchers have not been able to draw conclusions with regard to the method proposed.
Index Terms—news classification, text classification, Wikipedia
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2014-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/290
10.31937/sk.v6i1.290
ULTIMA Computing; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 14-17
Ultima Computing : Jurnal Sistem Komputer; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 14-17
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/290/256
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/291
2021-03-22T01:28:54Z
SK:ART
Pengembangan Prototipe Kontemporer Piranti Lunak Akuisisi dan Reduksi Data Terowongan Angin Kecepatan Rendah Indonesia
Pane, Ivransa Zuhdi
Data acquisition and reduction software plays an important role in providing accurate and reliable aerodynamics information for all stakeholders in a wind tunnel test. Step-by-step development through prototyping cycles promotes the creation of data acquisition and reduction software which is in accordance with the requirement definition. Test in virtual machine environment showed adequate performances which in turn suggests further implementation of the software prototype for the real applications.
Index Terms—wind tunnel test, data acquisition and reduction, prototype, software engineering
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2014-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/291
10.31937/sk.v6i1.291
ULTIMA Computing; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 18-24
Ultima Computing : Jurnal Sistem Komputer; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 18-24
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/291/257
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/292
2021-03-22T01:28:52Z
SK:ART
Implementasi Algoritma Squeezer dan Term Frequency Ranking dalam Pembangunan Sistem Rekomendasi Tempat Makan
Wirawan, Vincentius
Hansun, Seng
Nugroho I., Hargyo Tri
Food is something that can not be separated from the life of every human being. Its variation makes a lot of people interested in tasting many types of food, even they have not known yet. The detail information of restaurants, especially their location could be a problem. So, the restaurants recommendation website is made to help them. The recommendations are given by the Squeezer algorithm using the user’s input as references. The accuracy of the given recommendations are determined from the amount and consistency of the user at the time of selecting the item. The Term Frequency Ranking is used as a searching feature to display the search results in ordered manner by their relevancy rank. Experiment result shows that the Term Frequency Ranking gives high value of Recall, 1, and 0.46 for the Precision value.
Index Terms—Recommended System, Squeezer, Term Frequency Ranking, Website.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2014-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/292
10.31937/sk.v6i1.292
ULTIMA Computing; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 25-32
Ultima Computing : Jurnal Sistem Komputer; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 25-32
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/292/258
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/293
2021-03-22T01:28:49Z
SK:ART
Implementasi Fuzzy Hashing untuk Signature Malware
Rinaldi, Aditia
Cryptographic hash value has long been used as a database of signatures to identify malware. The most widely used is the MD5 and/or SHA256. In addition, there are fuzzy hashing that slightly different from the traditional hash: length hash value is not fixed and hash value can be used to calculate the degree of similarity of some malware that may still be a variant. This research use ssdeep tool to calculate fuzzy hash. Database signature with fuzzy hash is smaller than SHA256 and larger than MD5. The level of accuracy for the detection of script-based malware variants is greater than the executable-based malware variants.
Index Terms—file signature, fuzzy hashing, malware signature, rolling hashing, sha
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2014-06-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/293
10.31937/sk.v6i1.293
ULTIMA Computing; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 33-38
Ultima Computing : Jurnal Sistem Komputer; Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer; 33-38
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/293/259
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/296
2021-03-22T01:28:37Z
SK:ART
Implementation of Android Based Speech Recognition for Indonesian Geography Dictionary
Hugeng, Hugeng
Hansel, Edbert
We have built an application of speech recognition for Indonesian geography dictionary based on Android operating system, named GAIA. This application uses a smartphone as a device to receive input in the form of a spoken word from a user. The approach used in recognition is Hidden Markov Model which is contained in the Pocketsphinx library. The phonemes used are Indonesian phonemes’ rule. The advantage of this application is that it can be used without internet access. In the application testing, word detection is done with four conditions to determine the level of accuracy. The four conditions are near silent, near noisy, far silent, and far noisy. From the testing and analysis conducted, it can be concluded that GAIA application can be built as a speech recognition application on Android for Indonesian geography dictionary; with the results in the near silent condition accuracy of word recognition reaches an average of 52.87%, in the near noisy reaches an average of 14.5%, in the far silent condition reaches an average of 23.2%, and in the far noisy condition reaches an average of 2.8%.
Index Terms—speech recognition, Indonesian geography dictionary, Hidden Markov Model, Pocketsphinx, Android.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/296
10.31937/sk.v7i2.296
ULTIMA Computing; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 76-82
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer; 76-82
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/296/262
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/442
2021-03-22T01:28:34Z
SK:ART
Implementasi Audio Steganografi menggunakan 4th LSB dan Advanced Encryption Standard pada Windows Phone
Maricar, M. Chaeril
Hansun, Seng
Securing data during transmission become one of the problem in technology, those data can be intercepted and read by others. One preventive action to overcome this is by using steganography. This thesis implements an audio steganography using Windows Phone. Combination of Advanced Encryption Standard to secure data and Audio Wave Steganography which embedded data inside 4th LSB layer, resulting in increased safety and robustness against noise addition compared to 1st LSB.
Index Terms—Advanced Encryption Standard, Audio Steganography, Audio Wave Steganography, Least Significant Bit, Windows Phone.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/442
10.31937/sk.v7i1.442
ULTIMA Computing; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 1-4
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 1-4
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/442/396
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/447
2021-03-22T01:28:32Z
SK:ART
Analisis Perbandingan Performa Sistem Pakar Zakat menggunakan Algoritma Rule-Based dan Algoritma Rete Berbasis Web
Dharmawan, Farisi
Meidia, Hira
Web-based expert system developed in this research aims to calculate zakat based on Islam rules, and then compare two algorithms as inference machines, i.e. rule-based algorithm and rete algorithm. The advantages of this expert system are in the way of inputting data, brief explanation about end result, and javascript feature in adding the expertise of the system. In comparing two algorithms, performance parameters used are storage usage in RAM, speed in resulting conclusion, and the accuracy of conclusion, that provided by each algorithm. Pursuing a few iterations in rete algorithm has shown generally better performance compared to rule-based algorithm. This is caused by the fact that several conditions are stored in rete algorithm so that it was not needed to recalculate.
Index Terms—zakat expert system, rule-based expert system, rete algorithm
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/447
10.31937/sk.v7i1.447
ULTIMA Computing; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 5-11
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 5-11
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/447/398
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/448
2021-03-22T01:28:29Z
SK:ART
Pengembangan Aplikasi Pendukung Keputusan Pemilihan Program Studi dengan Metode Fuzzy Logic (Studi Kasus: Universitas Multimedia Nusantara)
Haryanto, Joko
Hansun, Seng
This paper describes the development of decision support system application to assist students who want to enter college so that no one choose the majors incorrectly. This application uses fuzzy logic method because fuzzy logic is very flexible in data which are vague and can be represented as a linguistic variable. The purpose of this application is to assist students to choose available majors at University Multimedia Nusantara which are appropriate with his/her capabilities. This application accepts five kinds of input values i.e. Mathematics, Indonesian, English, Physics, and TIK. Received input will be processed by the calculation of the system for decision-making and the application will generate output that shows how great a match for each majors. With this application, prospective students can find out where the majors that match his/her capabilities. This application has ninety nine percentage of match result accuracy.
Index Terms—fuzzy logic, decision support system, UMN, selection of major
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/448
10.31937/sk.v7i1.448
ULTIMA Computing; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 12-18
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 12-18
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/448/399
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/449
2021-03-22T01:28:27Z
SK:ART
Optimasi Pencarian Kata pada Aplikasi Penerjemah Bahasa Mandarin – Indonesia Berbasis Android dengan Algoritma Levenshtein Distance
Peggy, Peggy
Hansun, Seng
In the Chinese-Indonesian language translator application on electronic device, such as Android, input is all about pinyin. Sometimes, some errors could occured. User can not find the word which he is searching for. These errors can increase the number of processing time. A solution to solve these errors is performing optimization on the application, i.e. by providing some alternative approaches word which typed by user. Application will sort alternative words according to the smallest distance to the largest distance. Then, application will display alternative words order from top priority which has the smallest distance, to low priority which has the largest distance. In brief, translator application with optimization is useful to shorten processing time of translating from Chinese to Indonesian by providing alternative words. Optimization is done with Levenshtein Distance algorithm. Levenshtein Distance algorithm will calculate the difference between the distance of the word user typed among alternative words.
Index Terms─Android, Chinese, Indonesian, Levenshtein Distance, optimization, translator application
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/449
10.31937/sk.v7i1.449
ULTIMA Computing; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 19-23
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 19-23
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/449/400
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/450
2021-03-22T01:28:24Z
SK:ART
Penerapan Algoritma C4.5 pada Analisis Kerusakan Barang Jadi
Oktana, Ivan
Hansun, Seng
A Data mining is the activity that includes the collection, the use of historical data to discover regularity, patterns and relationship in a large data set. The usefulness of data mining is to specify a pattern to be found in the data mining task. The presences of data mining is motivated by the problem of data explosion which had been experienced lately these day where many organization or company collect so many years of data (purchasing data, sales data, damage data item, transaction data, and so on). In this paper data mining methods been used to analyze the damage data of finished products, with the goal of producing a pattern of the damage product. Based on the pattern from product’s damage, can be see and the aspects that affect to the damaged product. The purpose of this study is to show information about the relationship of damage data of finished goods using C4.5 algorithms in PT. Kayu Lapis Asli Murni, and display results in the form of a decision tree mining.
Index Terms—data mining, C4.5 algorithms, decision tree, damage data of finished products, PT. Kayu Lapis Asli Murni
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2016-08-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/450
10.31937/sk.v7i1.450
ULTIMA Computing; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 24-28
Ultima Computing : Jurnal Sistem Komputer; Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer; 24-28
2549-4007
2355-3286
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/450/401
Copyright (c) 2016 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/566
2021-03-22T01:28:22Z
SK:ART
Rancang Bangun Aplikasi Pembelajaran Chord dan Melodi Gitar Berbasis Augmented Reality
Punuindoong, Daniel Hero Fersil
Meidia, Hira
In this study, the application of the basic concepts of chord and melody guitar is made by using marker-based Augmented Reality method. Unity 3D is used to build the application and Vuforia is used as a library of Augmented Reality, where the application can recognize the marker as the basis of the virtual 3D objects rendering chord and melody guitar by using Android smartphone. There are several colours and numbers to make it easier to know the type and position of the fingers used in forming a chord or a melody.
Index Terms- Augmented Reality, Guitar 3D Chord, Guitar 3D Melodi, Unity 3D, Vuforia, Android
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/566
10.31937/sk.v9i1.566
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 1-6
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 1-6
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/566/496
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/567
2021-03-22T01:28:20Z
SK:ART
Distribusi Pengiriman File Multimedia Secara RealTime dengan Jaringan WAN Frame Relay
Halim, Fransiscus Ati
Today's communications networks are built using high-speed digital trunks that inherently provide high throughput, minimal relay, and a very low error rate. Such transmission networks supply highly reliable service without the overhead of error control functions. Frame relay is a packet-mode transmission network service that exploits these network characteristics by minimizing the amount of error detection and recovery performed inside the network [1]. In addition, real time network based systems can also minimize the possibility of employees committing fraud resulting in losses for the company. The research was carried out in a service provider video ad impressions company, which has fifteen branches in the islands of Java and Sumatra. The problem is the revenue reporting is not real-time and non-standard video file format ads to each branch. This is because the distribution process with the hard disk media are still using courier services. Based on user demand, it was decided to use the computer network using Frame Relay technology. With the computer network that connects all the branches to the head office, the data updating process can be done in a shorter time than the previous system and will reduce fraud forms of each branch and enable the achievement of a better quality of service to customers.
Index Terms—Computer Network, Frame Relay
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/567
10.31937/sk.v9i1.567
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 7-11
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 7-11
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/567/497
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/568
2021-03-22T01:28:12Z
SK:ART
Perbandingan Algoritma Horspool dan Algoritma Zhu-Takaoka dalam Pencarian String Berbasis Desktop
Kusnadi, Adhi
Wicaksono, Abraham Khrisnandi
String searching is the search process by using the index to find text that can help in information retrieval systems. Continuing previous research, this study uses an algorithm Horspool and Zhu-Takaoka to find the performance of each of these algorithms in the search for a pattern in the text. So they make a useful desktop-based application to measure performance of both algorithm, particulary the time required to perform string searching process. Using the method of prototyping and Microsoft Visual Studio with C# programming language implementation. Result obtained from this application is the number of words found, and the processing time of each algorithm. From this study, the Horspool algorithm is 19,82845 percent faster in first test with the pattern "swan" in a text file 50 multiples 1000 words and 15.9442 percent in the second trial using text files 70000 words with different pattern than the number of characters Zhu algorithm -Takaoka in the process of searching string.
Index Terms-String searching, Horspool, Zhu-Takaoka, Microsoft Visual Studio, application, processing time.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/568
10.31937/sk.v9i1.568
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 12-16
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 12-16
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/568/498
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/569
2021-03-22T01:28:17Z
SK:ART
Penelitian Mengenai Metode Steganografi Least Significant Bit
Jonathan, Ivan
Haryono, Albert Yeusiawan
Leonardi, Kevin
In today's technological era, the concealment of sensitive information is the concern of many people. Because the information is often shared and discussed through a very commonly used communication medium. Steganography is one technique to hide a secret message into a file that has a larger size. In this paper, we will discuss the methods that can be used in steganography, especially the method of Least Significant Bit.
Keywords: Steganography, Data Hiding, Steganography Algorithm, Least Significant Bit.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/569
10.31937/sk.v9i1.569
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 17-20
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 17-20
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/569/499
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/570
2021-03-22T01:28:15Z
SK:ART
Aplikasi Pengendali Kamera DSLR Nirkabel Tipe Low End Berbasis Android
Tirtana, Endang
Setiawan, Eko Budi
One of those beneficial innovations in DSLR camera it is able to connect with other mobile devices using wireless network. Its primary function is to control camera from distance and to instantly upload photos to social medial. But, not all DSLR cameras are equipped with this feature. Only the latest mid-end and high-end DSLR camera have the feature. In order to solve the previously mentioned issue, the researcher conducted a trial using Arduino and Bluetooth as the camera’s wireless network. The result showed that Arduino did not have its own module and, as a result, users would need to add new modules if they wanted to add new features. This was considered ineffective and inefficient. Moreover, Bluetooth connection is rarely used nowadays due to the limited transfer rate and area coverage compare to using WiFi connection. In line with the aforementioned explanation, a research was held with the main objective to access and operate low-end DLSR camera using Raspberry Pi. The Raspberry Pi was operated using access point and controlled by smartphone.
Index Terms— Camera, DSLR, wireless, Raspberry Pi, Android
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/570
10.31937/sk.v9i1.570
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 21-29
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 21-29
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/570/526
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/571
2021-03-22T01:28:10Z
SK:ART
Analisis dan Implementasi Protokol Otentikasi FIDO U2F
Pranata, Sunderi
Nugroho, Hargyo Tri
Yamaki, Hirofumi
It is known that password itself is not enough for formidable authentication method since it has a lot of vulnerabilities. Multi factor authentication (MFA) is introduced for the next generation for good authentication to address that issue. MFA combines two or more of three principles of good security, “something you know”, “something you have”, and “something you are”. Most MFA mechanisms work as one time passwords (OTP). However, they can still be vulnerable to phishing and MiTM attack. On top of that, OTP can be hard to use as it requires user to input another password given by the device (SMS, token, authenticator). Implemented in small USB U2F device, FIDO U2F delivers easier yet stronger security on authentication process which implements public key cryptography, challenge-response protocol, and phishing and MitM protection.
Index Terms— Authentication protocol, FIDO U2F, Multi factor authentication, OTP
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/571
10.31937/sk.v9i1.571
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 30-35
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 30-35
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/571/500
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/572
2021-03-22T01:28:07Z
SK:ART
Pengaruh Algoritma Stemming Nazief-Adriani Terhadap Kinerja Algoritma Winnowing Untuk Mendeteksi Plagiarisme Bahasa Indonesia
Nugroho, Hargyo Tri
Winnowing algorithm is one among many algorithms for detecting document similarity and plagiarism. Some studies show that Winnowing algorithm performs quite well. One form of plagiarism is paraphrase plagiarism. Paraphrase plagiarism can be done by changing sentence structure, changing vocabulary, and adding or changing affixes. Based on some of our previous experiments, detecting document resemblances can be enhanced by changing the words containing affixes to their basic words. In computer science, this technique is known as stemming - a technique to extract the basic word from an affixed word. Usually this technique is required in the filtering process to save storage media. For Indonesian, the Nazief-Adriani stemming algorithm is by far the most appropriate. This study examines how the effect of Nazief-Adriani stemming algorithm on Winnowing algorithm's performance against Indonesian texts. The results showed that the stemming process using Bloom-Filter on the Winnowing algorithm tends to decrease the similarity level achieved, but it accelerates processing time by approximately 30%.
Keywords—Algoritma Nazief-Adriani, Algoritma Winnowing, Bloom-Filter, Plagiat, Plagiat Checker
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/572
10.31937/sk.v9i1.572
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 36-40
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 36-40
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/572/501
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/573
2021-03-22T01:28:05Z
SK:ART
Rancang Bangun Mekanisme Load Sharing Pada Link Aggregation Menggunakan Software Defined Networking
Samuel, Samuel
Samudera, Cahyo Eko
Given the level of activity of Internet users is high on lately. Impact on the growing needs for server throughput can be treated with load sharing on link aggregation. However, it possess a problem for UDP protocol data packets which will experience jitter and packet received out of order high. Therefore, the author tries to create an algorithm to share the package which will be sent to the server with weighted round robin method that focuses UDP Protocol data packets. The author uses the Software Defined Networking (SDN) and OpenFlow protocol that is capable of directly reprogrammed network devices. Host connect by sending packets Internet Control Message Protocol (ICMP), Transport Control Protocol (TCP) and User Datagram Protocol (UDP) to the server, then do an analysis of the bandwidth, jitter, datagrams, and retry. The author has successfully implemented with the emulator Mininet and testing. The results indicate that the average jitter is able to be reduced to 50% and packets received out of order is reduced to 0 compared to standard link aggregation with weighted round robin load sharing method.
Keywords— Software Defined Netwoking, Link Aggregation, Weighted Round Robin, UDP
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2017-06-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/573
10.31937/sk.v9i1.573
ULTIMA Computing; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 41-47
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 1 (2017): Ultima Computing : Jurnal Sistem Komputer; 41-47
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/573/502
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/656
2021-03-22T01:28:03Z
SK:ART
Implementasi Monitoring Kualitas Udara Menggunakan Peramalan Exponential Smoothing dan NodeMCU Berbasis Mobile Android
Pratama, Kurniansyah
Setiawan, Eko Budi
Poor air quality threatens the health of all living things from humans to plants. Most people don’t know that the air they are breathing may be polluted. WHO said that 92% population in the world are living in the area with poor air quality that exceed the safe limit from WHO. Carbondioxide is one of many dangerous gas that must be considered by human. It can cause serious problem to human health. Industries are contribute to carbondioxide concentration in air. The purpose of this system is build the tool using NodeMCU microcontroler to measure the air quality in some place. This system can inform the user about air quality in their place by using Android smartphone. The forecast feature can be used to prevent the dangerous air quality.
Index Terms— Carbondioxide, Air Quality, Android, Forecast
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/656
10.31937/sk.v9i2.656
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 58-66
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 58-66
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/656/608
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/657
2021-03-22T01:28:00Z
SK:ART
Metoda Sederhana Distribusi Node Jaringan Sensor Nirkabel untuk Mengatasi Kehilangan Data Pada Saat Pengiriman
Muhendra, Rifki
A simple method of wireless sensor network node distribution was developed to address data loss during transmission. A node consists of a microcontroller, radio frequency, and battery. The adjacent nodes are planted with programs that can build mesh networks. This network consists of multiple child networks and parent networks connected through a frequency router node. Communication between nodes in the network can take two ways. The average ping time measured for the node distribution model is small from 1 second and the bit error rate (BER) is 0%.
Index Terms—Wireless sensor networks, mesh, frequency router node
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/657
10.31937/sk.v9i2.657
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 67-72
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 67-72
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/657/609
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/672
2021-03-22T01:27:58Z
SK:ART
Evaluasi Desain Pencahayaan Interior Pada Ruang Pertemuan Publik Berdasarkan Nilai Intensitas Pencahayaan
Salehuddin, Muhammad
Latupeirissa, Hednrico Firzandy
The emphasis of green building design is not only based on the use of energy consumption as efficiently as possible purpose, but another important aspect that it is also the comfort factor should be considered for the occupants in the building space itself. In this paper, we evaluate the comfort factor of public meeting room at New Media Tower Building, Universitas Multimedia Nusantara (C-UMN Building). The comfort factor to be evaluated is the artificial lighting inside the room (interior) according to standards that have been standardized locally and internationally. The evaluation process includes a quantitative approach through measuring the existing conditions by utilizing photometric elements such as illuminance and uniformity. The results of this measurement can practically provide information on whether the C-UMN Building space that has been meets the criteria of the ideal standard or not.
Index Terms—DIALux, Green Building, Iluminance, Uniformity
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/672
10.31937/sk.v9i2.672
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 73-77
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 73-77
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/672/610
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/697
2021-03-22T01:27:55Z
SK:ART
Rancang Bangun Pengatur Suhu dan Sirkulasi Udara di Smoking Room
Muharom, Ahmad Syahril
In this study, the application of temperature and air circulation control in the smoking room using a microcontroller. The Sensors applied to this Prototype are LM35 and DT-Sense CO. The method used design a controller and then apply it to the microcontroller. The sensor has been tested on a miniature smoking room. The results show sensors can work and good, although cigarette smoke and the temperature of the room changes, so air quality in the smoking room can be maintained.
Index Term-Cigarette smoke, CO, automation, microcontroller, temperature sensor, smoke sensor
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/697
10.31937/sk.v9i2.697
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 78-82
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 78-82
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/697/611
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/699
2021-03-22T01:27:53Z
SK:ART
Literature Review: Metode Komputasi Numerik untuk Analisis Gelombang Elektromagnetik
Shabrina, Nabila Husna
This paper reviews the conceptual background and some application of numerical computational method for electromagnetic waves. In this literature review, our discussion is limited to Finite Element Method (FEM), Finite Difference Time Domain (FDTD) Method, and Method of Moment (MoM). Definition and characteristic of each method is explained, including the theoretical principles along with strength and weakness for every method. The method for solving electromagnetic problems can be selected based on the object’s shape, researcher’s domain concerned, and Maxwell equation associated with the problem. By reading this paper, readers will not only grasp the theoretical explanation but also gain the big picture of each numerical computational method.
Indeks Terms— FEM, FDTD, MoM, Numerical Computational Method
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/699
10.31937/sk.v9i2.699
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 83-87
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 83-87
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/699/612
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/701
2021-03-22T01:27:51Z
SK:ART
Maximum Power Point Tracking pada Sel Surya menggunakan Extreme Learning Machine
Jalma, Wolfgang
Maximum Power Point Tracking is a method to obtain maximum harvest of PV solar cell. Due to PV nonlinearity, a lot of novel approach has been. One of the most prominence is neural network, that usually can solve this nonlinearity formulation, although needs relatively longer time in order to train, making it unfeasible for real implementation. This research tried to accelerate the training of the neural network based MPPT, using Extreme Learning Machine, with quite promising results.
Index Terms—Maximum Power Point Tracking, Neural Network, PV Solar Cell, Extreme Learning machine.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/701
10.31937/sk.v9i2.701
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 88-91
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 88-91
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/701/613
Copyright (c) 2017 Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/749
2021-03-22T01:27:43Z
SK:ART
Fast Tracking of Detection Offenders Smoking Zone Menggunakan Sensor MQ-2 Berbasis Internet of Things
Susanto, Fredy
Syafnidawati, Syafnidawati
With the increasing violations by smokers in free zone cigarettes, very affecting for human health cigarettes or not smokers. So that designed a supervision system to reduce the number of violations by smokers. The system is based on the aimed to detect and provide a warning to smokers that the room cannot be cigarettes if breaking will be imposed sanctions. This system is made up of hardware, consists of smoke sensor base their MQ2, Camera C270 and Raspberry pi. This system created by the language of Python programming technique. How this appliance if violations by smokers, when smoke is detected then the webcam will take pictures of the offenders and the results of the photo will be sent automatically to the email, if the results of the photo has been sent to email and alert sound alarm will be active and a notification that in the area cannot be cigarettes. The results of the design of this system is not only to detect and provide a notification only, but it also has been able to give a warning and evidence of who is a breach in the zone.
Index Terms— Smoke sensor, MQ-2, raspberry pi
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-07-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/749
10.31937/sk.v10i1.749
ULTIMA Computing; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 5 - 8
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 5 - 8
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/749/646
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/789
2021-03-22T01:27:48Z
SK:ART
Implementasi Algoritma Prim Dalam Penentuan Ikatan Senyawa Kimia
Tiwow, Olivia Benazir Ester
Kusnadi, Adhi
This research concerns the implementation of Prim algorithm in the determination of bond of a chemical compound. By doing a minimum spanning tree search of a weight graph that has been created. Input from the user in the form of chemical compounds will be processed so that the compound can be divided into elements that will act as nodes on the prime algorithm. Weight of the tangent node is obtained from the comparison of the minimum number of atoms that can react between the two elements that will be bonded to each other. Applications developed on the basis of the web by considering the functionality of the design can be accessed by many people. System design is poured into HTML and Javascript programming language. All design functionality is poured into the Javascript programming language. This study is still limited to programs that can only process the input of compounds that are in class A in the periodic table. And preformed compounds such as SO42-, HO3-. This application has an accuracy rate of 77.41% and 66.67% of testers said that this application is useful for Indonesian education.
Index Terms—Chemical Compound, prim algoritm, minimum spanning tree, website, Javascript.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/789
10.31937/sk.v9i2.789
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 48-51
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 48-51
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/789/606
Copyright (c) 2017 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/790
2021-03-22T01:27:46Z
SK:ART
Pengenalan Finger Vein Menggunakan Local Line Binary Pattern dan Learning Vector Quantization
Sari, Jayanti Yusmah
Saputra, Rizal Adi
This research proposes finger vein recognition system using Local Line Binary Pattern (LLBP) method and Learning Vector Quantization (LVQ). LLBP is is the advanced feature extraction method of Local Binary Pattern (LBP) method that uses a combination of binary values from neighborhood pixels to form features of an image. The straight-line shape of LLBP can extract robust features from the images with unclear veins, it is more suitable to capture the pattern of vein in finger vein image. At the recognition stage, LVQ is used as a classification method to improve recognition accuracy, which has been shown in earlier studies to show better results than other classifier methods. The three main stages in this research are preprocessing, feature extraction using LLBP method and recognition using LVQ. The proposed methodology has been tested on the SDUMLA-HMT finger vein image database from Shandong University. The experiment shows that the proposed methodology can achieve accuracy up to 90%.
Index Terms—finger vein recognition, Learning Vector Quantization, LLBP, Local Line Binary Pattern, LVQ.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-04-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/790
10.31937/sk.v9i2.790
ULTIMA Computing; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 52-57
Ultima Computing : Jurnal Sistem Komputer; Vol 9 No 2 (2017): Ultima Computing : Jurnal Sistem Komputer; 52-57
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/790/607
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/838
2021-03-22T01:27:41Z
SK:ART
Pembangunan Web Service Data Masyarakat Menggunakan REST API dengan Access Token
Perkasa, Muhammad Iqbal
Setiawan, Eko Budi
Data is one of the most important things in this information and information technology era that evolving now. Currently, the government still has not used the public data maximally for administrative purposes. Utilization of this big population data is the creation of a web service application system with REST API where this data will be open and accessible to those who have access. One of the institutions that use this service is the Manpower and Transmigration Service where this system can make the Dinas staff more efficient to create and register job search cards using available community data. This application is able to provide and facilitate many parties, such as data administrators to monitor data usage, registration employee in input data, and people able to register independently.
Index Terms—Web service, API, Rest api, People data
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-07-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/838
10.31937/sk.v10i1.838
ULTIMA Computing; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 19 - 26
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 19 - 26
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/838/648
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/847
2021-03-22T01:27:39Z
SK:ART
Rancang Bangun Sistem Rekomendasi Restoran Menggunakan Metode AHP dan VIKOR pada Platform LINE
Martliong, Andre Utomo
Iswari, Ni Made Satvika
Since 2012 until 2017, culinary business in Indonesia has increased by an average 7% to 14% per year. Nowadays, application technology such as Zomato, helps consumers to find information about restaurant’s promos, advantages and disadvantages of a restaurant, and variations of the menu their provided. People who owned the culinary business can interact directly with consumers through social media such as LINE. LINE has 90 million users that communicate with each other by using features that LINE’s provided, such as stickers, news portals, voice and video calls, and LINE Message API service. With 90 million LINE’s users in Indonesia and growing culinary business, developing a restaurant recommendation system in LINE will provide solutions to many people, which inspired the author to develop this system. Data of restaurant it’s taken using Zomato API. Developing this system needs a method of AHP (Analytic Hierarchy Process) and VIKOR (VIsektriterijumsko KOmpromisno Rangiranje), where the application will be built using PHP language. The AHP method is used to assign a weighting value to criteria, and the VIKOR method is used to sort the best alternative option. Based on research through questionnaires, this system’s design and implementation has reached 71,13 value of usability, which mean that system is useful to help people to find restaurant their looking for.
Index Terms - Culinary, Zomato API, LINE Message API, AHP, VIKOR
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-07-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/847
10.31937/sk.v10i1.847
ULTIMA Computing; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 27 - 33
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 27 - 33
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/847/649
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/865
2021-03-22T01:27:29Z
SK:ART
Konversi Timbangan Digital untuk Pengukuran Volume pada Aplikasi Wadah Pintar
Konversi Timbangan Digital untuk Pengukuran Volume pada Aplikasi Wadah Pintar
Astrid, Marcella
Karyono, Kanisius
Salah satu penerapan Internet of Things adalah wadah pintar. Wadah pintar yang dibuat memiliki fitur dapat mengirimkan informasi mengenai stok makanan atau bahan lainnya yang tersisa. Pengukuran volume stok dapat dilakukan dengan pengukuran berat. Akan tetapi, massa jenis setiap benda yang dapat ditampung di wadah dapat berbeda-beda sehingga diterapkan sistem persentase. Pengukuran berat dapat menggunakan strain gauge yang terdapat pada timbangan digital yang kemudian diolah dengan mikrokontroler ATMega8535. Batas bawah (nilai 0%) dan batas atas (nilai 100%) diinput oleh pengguna dengan external interrupt. Uji coba dilakukan dengan melihat keakuratan persentase bacaan yang tersimpan di database dengan persentase perhitungan. Hasil bacaan lebih akurat saat nilai 100% berada di tengah-tengah range strain gauge dibandingkan dengan yang berada di dekat batas bawah dan batas atas range strain gauge.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/865
10.31937/sk.v10i2.865
ULTIMA Computing; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 41-46
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 41-46
2549-4007
2355-3286
10.31937/sk.v10i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/865/734
Copyright (c) 2018 ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/887
2021-03-22T01:27:36Z
SK:ART
Implementasi Metode Entropy dan Topsis Dalam Sistem Pendukung Keputusan Pemilihan Karyawan Terbaik
Rupang, Mitha Anggreani
Kusnadi, Adhi
Employee is a part of the company's most important asset in its efforts to maintain survival, growth, ability to compete and profit. At this time the process of assessment of employees in Jakarta Smart City is still in the form of manual and the decision only from one party only, so the process is still not accurate. So it takes the methods that must be able to replace that system. For that reason, a Decision Support System (SPK) was created to determine the best employees in Jakarta Smart City. In the system implemented the method of Entropy and TOPSIS. Entropy method can be trusted in determining the weight of the criteria to be used. And TOPSIS method can quickly perform the ranking process. Criteria to be used are quality and quantity of work, obedience, cooperation, morale, and work discipline. The index of satisfaction level of respondents to the decision support system ranges from 70% -80%, meaning that the assessment of the system created gives results at a fairly good level.
Index Terms—employee, nter key words or phrases in alphabetical order, separated by commas
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-07-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/887
10.31937/sk.v10i1.887
ULTIMA Computing; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 13 - 18
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 13 - 18
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/887/647
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/888
2021-03-22T01:27:34Z
SK:ART
Pendeteksian Ruang Kosong Parkir di dalam Ruangan
Afriliana, Nunik
Rosalina, Rosalina
Valeria, Regina
Menemukan tempat parkir kosong di tempat parkir dalam ruangan seperti pusat perbelanjaan menjadi kesulitan banyak pengemudi, terutama saat jam sibuk di kota-kota besar. Dalam makalah ini, sebuah sistem deteksi kekosongan tempat parkir dalam ruangan diusulkan, dengan menggunakan sistem kamera yang melibatkan OpenCV untuk mempercepat waktu dalam mencari tempat parkir bagi pengemudi kendaraan dengan memberi mereka informasi lokasi dan tempat parkir. Sistem ini menggunakan metode deteksi objek statis, yaitu Haar-Like Cascade Classifier yang dikombinasikan dengan Hough Line Detection untuk mengidentifikasi area parkir kosong dari gambar parkir yang diambil secara real time melalui kamera IP atau kamera USB. Sistem ini dirancang untuk disematkan dengan sistem manajemen parkir sebuah bangunan sebagai alat yang menyediakan tempat parkir untuk membantu pengemudi kendaraan memasuki area parkir.
Index Terms—Haar-Like Cascade Classifier, Hough Line Detection, Sistem Maanajemen Parkir
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-07-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/888
10.31937/sk.v10i1.888
ULTIMA Computing; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 34 - 40
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 34 - 40
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/888/650
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/890
2021-03-22T01:27:32Z
SK:ART
Pengenalan Tulisan Tangan Offline Dengan Algoritma Generalized Hough Transform dan Backpropagation
Putri, Farica Perdana
Kusnadi, Adhi
Offline handwriting recognition is a technique used to recognize handwriting in paper document which converting it to digital form. Each handwriting has a unique style and shape that can be used to identify the owner. This research aims to develop a method to recognize the digital data handwriting. The method combines two algorithms; the first is Generalized Hough Transform in feature extraction process to detect arbitrary objects on the image; the second algorithm is Backpropagation to train the neural network based on feature values from feature extraction process. Artificial Neural Network (ANN) is used to improve the accuracy of the recognition system. The experiments are performed by using 100 handwriting images of 10 different people. The number of hidden units is defined through experiment to obtain optimal neural network. The experiment result shows that the recognition accuracy is up to 80%.
Index Terms—Artificial Neural Network, Backrpopagation, Generalized Hough Transform, Offline handwiritng recognition
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2018-07-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/890
10.31937/sk.v10i1.890
ULTIMA Computing; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 5 - 12
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 1 (2018): Ultima Computing : Jurnal Sistem Komputer; 5 - 12
2549-4007
2355-3286
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/890/651
Copyright (c) 2018 Jurnal ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/929
2021-03-22T01:27:27Z
SK:ART
Analisis Pola Radiasi Antena Dipole pada aplikasi Wireless Sensor Networks di Industrial Site
Analisis Pola Radiasi Antena Dipole pada aplikasi Wireless Sensor Networks di Industrial Site
Shabrina, Nabila Husna
Samuel, Samuel
In industry 4.0, a complex system was needed to automatically control and communicate between devices. One component that often used in industrial automation is Wireless Sensor Networks (WSN), which is worked by transmitting the data needed through electromagnetic waves. The electromagnetic propagation in industrial process encounter challenges which caused by reflection or scattering from the object inside the industrial site. Therefore, in this research, the author will conduct a simulation to determine the characteristic of electromagnetic propagation in industrial site. The simulation was done by simulating antenna dipole with frequency 2.4 GHz in the simple 3D industrial site consist of some component. The result shows that simulating antena dipole in industrial site will affect the characteristic of the antena such as gain, directivity, and S parameter.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/929
10.31937/sk.v10i2.929
ULTIMA Computing; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 47-52
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 47-52
2549-4007
2355-3286
10.31937/sk.v10i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/929/735
Copyright (c) 2018 ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/953
2021-06-11T10:43:40Z
SK:ART
Perbandingan Algoritma C-Means Clustering dan Fuzzy C-Means Clustering
Perbandingan Algoritma C-Means Clustering dan Fuzzy C-Means Clustering
kusnadi, adhi
Maulillah, Abi Kabisah
Salah satu operasi di dalam analisis citra adalah segmentasi citra. Pada mulanya proses segmentasi dilakukan untuk memisahkan objek dari latar belakangnya, sehingga segmentasi merupakan bagian penting dalam pengenalan objek. Saat ini segmentasi sudah mengalami perkembangan yang sangat pesat, bukan hanya untuk tujuan pengenalan objek saja tetapi juga untuk persoalan interpretasi citra, yaitu untuk mengetahui objek-objek yang termuat dalam suatu citra. Banyak algoritma sudah dikembangkan untuk proses segmentasi citra. Beberapa di antaranya adalah algoritma C-Means Clustering dan Fuzzy C-Means Clustering. Pada peneltian ini, dilakukan perbandingan antara algoritma C-Means Clustering dan Fuzzy C-Means Clustering dalam segmentasi citra. Dari beberapa hasil percobaan yang didapat dalam penelitian ini berupa sisi waktu atau kecepatan, ketelitian dan pengulangan, maka dapat disimpulkan algoritma Fuzzy C-Means Clustering adalah algoritma yang terbaik yang dapat digunakan dalam segmentasi citra karena dalam algoritma Fuzzy C-Means Clustering terdapat nilai keanggotaan atau fuzzy yang secara iteratif diperbaiki hingga mencapai keadaan konvergen.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/953
10.31937/sk.v11i1.953
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 51-54
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 51-54
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/953/789
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/958
2021-03-22T01:27:24Z
SK:ART
Aplikasi Asesmen Anak Berkebutuhan Khusus di SLB Rafaha Arjasari Menggunakan Progressive Web App
Aplikasi Asesmen Anak Berkebutuhan Khusus di SLB Rafaha Arjasari Menggunakan Progressive Web App
Syah Lampah, Nawan Tutu
Setiawan, Eko Budi
Rafaha Arjasari Special School is one of the schools that provide special education for children with special needs. Learning in Rafaha Arjasari Special School refers to the applicable national curriculum then adapted to the abilities, barriers and needs of each child. Education will not run optimally if the educator does not know the obstacles, risks, and potential of each student. Assessment is the process of collecting, analyzing and interpreting data or information about students and their environment. Based on interviews with the headmaster of Rafaha Special School, the assessment is an absolute process that must be done so teachers can find out the obstacles, risks, and potential of each children. The purpose of this research is to build assessment applications that can help teachers in carrying out the assessment process. This system provides features for assessing visual perceptions and perceived perceptions by utilizing the flash and vibrate features on the Android smartphone. The features that provided can help teachers make the assessment process easier.
Rafaha Arjasari Special School is one of the schools that provide special education for children with special needs. Learning in Rafaha Arjasari Special School refers to the applicable national curriculum then adapted to the abilities, barriers and needs of each child. Education will not run optimally if the educator does not know the obstacles, risks, and potential of each student. Assessment is the process of collecting, analyzing and interpreting data or information about students and their environment. Based on interviews with the headmaster of Rafaha Special School, the assessment is an absolute process that must be done so teachers can find out the obstacles, risks, and potential of each children. The purpose of this research is to build assessment applications that can help teachers in carrying out the assessment process. This system provides features for assessing visual perceptions and perceived perceptions by utilizing the flash and vibrate features on the Android smartphone. The features that provided can help teachers make the assessment process easier.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/958
10.31937/sk.v10i2.958
ULTIMA Computing; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 65-74
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 65-74
2549-4007
2355-3286
10.31937/sk.v10i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/958/738
Copyright (c) 2018 ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1011
2021-03-22T01:27:22Z
SK:ART
Dampak Gamifikasi Tangga Interaktif untuk Mengubah Kebiasaan Manusia Studi Kasus Universitas Multimedia Nusantara
Dampak Gamifikasi Tangga Interaktif untuk Mengubah Kebiasaan Manusia Studi Kasus Universitas Multimedia Nusantara
Andoko, Andrey
Karyono, Kanisius
Ellianto, Ellianto
Gamifikasi merupakan proses yang ditempuh untuk menambahkan elemen permainan di dalam suatu aktifitas, untuk meningkatkan partisipasi dan kepuasan (user experience/UX). Gamifikasi juga dapat dilakukan untuk mengubah kebiasaan seseorang sehingga dapat dicapai penghematan penggunaan energi dan membuat pengguna lebih sehat. Paper ini membahas dampak pembuatan tangga interaktif dengan unsur gamifikasi berupa tangga yang dapat mengeluarkan suara/musik yang jenisnya dapat dipilih oleh pengguna tangga. Pemilihan suara tersebut disimpan pada basis data sistem dengan memanfaatkan ID yang dientri dengan kartu RFID. Responden penggunanya adalah mahasiswa, dosen dan karyawan yang biasa memanfaatkan tangga dan lift/elevator. Apabila pengguna melewatkan kartu pengenal RFID ke sistem, tangga akan memainkan tangga nada dengan pilihan suara gitar, piano atau saxophone. Tinggi atau rendahnya suara akan tergantung dari posisi anak tangga yang dipijak. Tujuan dari gamifikasi ini adalah mengetahui seberapa besar pengaruh gamifikasi dengan elemen suara. Dari proses studi yang dilakukan dapat diambil kesimpulan bahwa unsur gamifikasi suara yang berupa anak tangga interaktif yang memainkan tangga nada telah menimbulkan keinginan orang untuk mencoba dengan melewati tangga dibandingkan dengan menggunakan lift. Hanya saja hal ini berlangsung singkat karena selanjutnya tidak dapat meningkatkan penggunaan tangga. Dari penelitian ini belum terbukti bahwa gamifikasi dapat memodifikasi perilaku pengguna yang mencari kenyamanan dengan menambahkan elemen gamifikasi berbentuk suara, tanpa menimbulkan keluhan dari pengguna. Pengguna hanya mau menggunakan pada saat awal saja pada saat sistem masih baru karena rasa keingintahuan pengguna, untuk kemudian kembali ke aktifitas atau kenyamanan semula.
Gamifikasi merupakan proses yang ditempuh untuk menambahkan elemen permainan di dalam suatu aktifitas, untuk meningkatkan partisipasi dan kepuasan (user experience/UX). Gamifikasi juga dapat dilakukan untuk mengubah kebiasaan seseorang sehingga dapat dicapai penghematan penggunaan energi dan membuat pengguna lebih sehat. Paper ini membahas dampak pembuatan tangga interaktif dengan unsur gamifikasi berupa tangga yang dapat mengeluarkan suara/musik yang jenisnya dapat dipilih oleh pengguna tangga. Pemilihan suara tersebut disimpan pada basis data sistem dengan memanfaatkan ID yang dientri dengan kartu RFID. Responden penggunanya adalah mahasiswa, dosen dan karyawan yang biasa memanfaatkan tangga dan lift/elevator. Apabila pengguna melewatkan kartu pengenal RFID ke sistem, tangga akan memainkan tangga nada dengan pilihan suara gitar, piano atau saxophone. Tinggi atau rendahnya suara akan tergantung dari posisi anak tangga yang dipijak. Tujuan dari gamifikasi ini adalah mengetahui seberapa besar pengaruh gamifikasi dengan elemen suara. Dari proses studi yang dilakukan dapat diambil kesimpulan bahwa unsur gamifikasi suara yang berupa anak tangga interaktif yang memainkan tangga nada telah menimbulkan keinginan orang untuk mencoba dengan melewati tangga dibandingkan dengan menggunakan lift. Hanya saja hal ini berlangsung singkat karena selanjutnya tidak dapat meningkatkan penggunaan tangga. Dari penelitian ini belum terbukti bahwa gamifikasi dapat memodifikasi perilaku pengguna yang mencari kenyamanan dengan menambahkan elemen gamifikasi berbentuk suara, tanpa menimbulkan keluhan dari pengguna. Pengguna hanya mau menggunakan pada saat awal saja pada saat sistem masih baru karena rasa keingintahuan pengguna, untuk kemudian kembali ke aktifitas atau kenyamanan semula.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1011
10.31937/sk.v10i2.1011
ULTIMA Computing; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 75-80
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 75-80
2549-4007
2355-3286
10.31937/sk.v10i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1011/741
Copyright (c) 2018 ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1038
2021-06-11T10:43:40Z
SK:ART
Study: Pengukuran Saturasi Oksigen dengan Konsumer Grade RGB Kamera
Study: Pengukuran Saturasi Oksigen dengan Konsumer Grade RGB Kamera
Rizal, Aminuddin
Advancement on camera technology, image processing, and signal processing algorithm is widening the usage of camera into biomedical measurement. Mostly are used for pulse rate (PR) measurement to monitor human’s heart condition. In this paper, we studied the prospect of a consumer grade RGB camera as replacement for contact-based pulse oximeter (measure pulse rate and blood saturation oxygen). However, in this study we more focus on blood saturation oxygen measurement which needs more complex principle and calculation compared to PR measurement. We use both time and frequency domain calculation to know whether one or both of them have better achievement. The results reveal the summary performance from the usage of a consumer-grade RGB camera in saturation oxygen measurement.
Advancement on camera technology, image processing, and signal processing algorithm is widening the usage of camera into biomedical measurement. Mostly are used for pulse rate (PR) measurement to monitor human’s heart condition. In this paper, we studied the prospect of a consumer grade RGB camera as replacement for contact-based pulse oximeter (measure pulse rate and blood saturation oxygen). However, in this study we more focus on blood saturation oxygen measurement which needs more complex principle and calculation compared to PR measurement. We use both time and frequency domain calculation to know whether one or both of them have better achievement. The results reveal the summary performance from the usage of a consumer-grade RGB camera in saturation oxygen measurement.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1038
10.31937/sk.v11i1.1038
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 29-33
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 29-33
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1038/785
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1046
2021-06-11T10:43:40Z
SK:ART
Rancang Bangun Aplikasi Face Tracking dan Filter Berdasarkan Raut Wajah Menggunakan Algoritma Fisher-Yates Berbasis iOS
Rancang Bangun Aplikasi Face Tracking dan Filter Berdasarkan Raut Wajah Menggunakan Algoritma Fisher-Yates Berbasis iOS
Ghani, Malik Abdul
Rusli, Andre
Iswari, Ni Made Satvika
Expressions of facial expressions in addition to providing important emotional indicators, are very important objects in our daily lives too. Real-time video processing on mobile devices is a hot topic and has a very broad application. Photos that have used the filter have 21% more possibilities to be seen and 45% more likely to be commented on by photo consumers. The use of the Fisher-Yates algorithm is used as a filter scrambler for each facial expression emotion. The application is made for the iOS operating system with the Swift programming language that utilizes the Core ML and Vision framework. Custom Vision is used as a tool for creating and training models. In making a model, this study uses a dataset from Cohn-Kanade AU-Coded Facial Expression Database and Karolinska Directed Emotional Faces. Custom Vision can provide performance result training and provide precision and recall values for data that has been trained. The facial expression match with the model is determined by the confidence level value. The results of trials with Hedonic Motivation System Adoption Model method produce a percentage of pleasure in using the application (joy) of 79.39% of the users agree that the application provides joy.
Expressions of facial expressions in addition to providing important emotional indicators, are very important objects in our daily lives too. Real-time video processing on mobile devices is a hot topic and has a very broad application. Photos that have used the filter have 21% more possibilities to be seen and 45% more likely to be commented on by photo consumers. The use of the Fisher-Yates algorithm is used as a filter scrambler for each facial expression emotion. The application is made for the iOS operating system with the Swift programming language that utilizes the Core ML and Vision framework. Custom Vision is used as a tool for creating and training models. In making a model, this study uses a dataset from Cohn-Kanade AU-Coded Facial Expression Database and Karolinska Directed Emotional Faces. Custom Vision can provide performance result training and provide precision and recall values for data that has been trained. The facial expression match with the model is determined by the confidence level value. The results of trials with Hedonic Motivation System Adoption Model method produce a percentage of pleasure in using the application (joy) of 79.39% of the users agree that the application provides joy.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1046
10.31937/sk.v11i1.1046
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 1-8
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 1-8
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1046/780
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1063
2021-03-22T01:27:20Z
SK:ART
Pengenalan Pola Tulang Daun Dengan Jaringan Syaraf Tiruan Backpropagation
Pengenalan Pola Tulang Daun Dengan Jaringan Syaraf Tiruan Backpropagation
Tandrian, Alvin Hanjaya
Kusnadi, Adhi
The development of technology has affected many areas of life. Progress in the field of Computer Science can reach other aspect of science. This research apply the knowledge of Computer Science in Biological Science, the one is the morphology of leaf venation. Leaf venation is an important aspect in the process of identification. Therefore, in this research developed thesystem that classify the type of leaf venation. This application is used as means of research on the performance of pattern recognition on backpropagation neural network. The system designed using the Java programming and socket programming to transfer data from the mobile device into the computer. Data testing is implemented using Android to facilitate process oftaking the picture. While in the process of training data for the optimal weight applied directly on the server computer by using Java Eclipse. In the stage of image processing is implemented by using the library of Canny edge detection. Data consisted of five categories of leaf vein pattern, with a sample of three leaves for each pattern. Training data using two of the three leaves for each pattern, with 10 images each leaf so that there are 20 images for each pattern, with a total of 100 images for all patterns. Data testing use 10 images from the third leaf to count the accuracy. The system managed to getthe best accuracy by using an image size of 200 x 200 with 100 hidden node with the average accuracy of 76%.
Index Terms— Android, Canny Edge Detection, Java, Neural Networks Backpropagation, Socket Programming
The development of technology has affected many areas of life. Progress in the field of Computer Science can reach other aspect of science. This research apply the knowledge of Computer Science in Biological Science, the one is the morphology of leaf venation. Leaf venation is an important aspect in the process of identification. Therefore, in this research developed thesystem that classify the type of leaf venation. This application is used as means of research on the performance of pattern recognition on backpropagation neural network. The system designed using the Java programming and socket programming to transfer data from the mobile device into the computer. Data testing is implemented using Android to facilitate process oftaking the picture. While in the process of training data for the optimal weight applied directly on the server computer by using Java Eclipse. In the stage of image processing is implemented by using the library of Canny edge detection. Data consisted of five categories of leaf vein pattern, with a sample of three leaves for each pattern. Training data using two of the three leaves for each pattern, with 10 images each leaf so that there are 20 images for each pattern, with a total of 100 images for all patterns. Data testing use 10 images from the third leaf to count the accuracy. The system managed to getthe best accuracy by using an image size of 200 x 200 with 100 hidden node with the average accuracy of 76%.
Index Terms— Android, Canny Edge Detection, Java, Neural Networks Backpropagation, Socket Programming
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1063
10.31937/sk.v10i2.1063
ULTIMA Computing; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 53-58
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 53-58
2549-4007
2355-3286
10.31937/sk.v10i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1063/736
Copyright (c) 2018 ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1064
2021-03-22T01:27:17Z
SK:ART
Algoritma Fisher-Yates Shuffle dan Flood Fill sebagai Maze Generator pada Game Labirin
Algoritma Fisher-Yates Shuffle dan Flood Fill sebagai Maze Generator pada Game Labirin
Hoetama, D.J. Owen
Putri, Farica Perdana
Winarno, P.M.
Maze game is an interesting game and used to spend time. However, in the maze game, the level used forthis game still uses static levels. Static levels make the maze shape stay the same if we play the same level. Thus, players will quickly feel bored because it finds the same complexity. Maze generator is a static level problem solution on the maze game. This research uses Fisher-Yates Shuffle algorithm and Flood Fill algorithm to make maze generator. Fisher-Yates Shuffle algorithm is used for wall position randomization and Flood Fill algorithm to keep the maze results to remain resolved. The results of the application implementation yielded 30 mazes and were tested using the Hamming Distance algorithm, yielding that the result of the maze formed is always different. The average percentage rate difference produced 48% each time the maze was formed. The results of the maze that was formed performed perfect maze checking with the result of 83.33% percentage.
Index Terms— Fisher-Yates Shuffle, Flood Fill, MazeGenerator, Hamming Distance
Maze game is an interesting game and used to spend time. However, in the maze game, the level used forthis game still uses static levels. Static levels make the maze shape stay the same if we play the same level. Thus, players will quickly feel bored because it finds the same complexity. Maze generator is a static level problem solution on the maze game. This research uses Fisher-Yates Shuffle algorithm and Flood Fill algorithm to make maze generator. Fisher-Yates Shuffle algorithm is used for wall position randomization and Flood Fill algorithm to keep the maze results to remain resolved. The results of the application implementation yielded 30 mazes and were tested using the Hamming Distance algorithm, yielding that the result of the maze formed is always different. The average percentage rate difference produced 48% each time the maze was formed. The results of the maze that was formed performed perfect maze checking with the result of 83.33% percentage.
Index Terms— Fisher-Yates Shuffle, Flood Fill, MazeGenerator, Hamming Distance
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1064
10.31937/sk.v10i2.1064
ULTIMA Computing; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 59-64
Ultima Computing : Jurnal Sistem Komputer; Vol 10 No 2 (2018): Ultima Computing : Jurnal Sistem Komputer; 59-64
2549-4007
2355-3286
10.31937/sk.v10i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1064/737
Copyright (c) 2018 ULTIMA Computing
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1072
2021-06-11T10:43:40Z
SK:ART
ekspresi Mengidentifikasi Mood Mahasiswa Berdasarkan Ekspresi Wajah dengan Menggunakan Discrete Wavelet Transform dan Fuzzy K-Nearest Neighbor
expressions. Mengidentifikasi Mood Mahasiswa Berdasarkan Ekspresi Wajah dengan Menggunakan Discrete Wavelet Transform dan Fuzzy K-Nearest Neighbor
Reski Amalia, Nur Inzani
Sari, Jayanti Yusmah
Mood adalah keadaan emosional yang bersifat sementara. Mood biasanya memiliki nilai kualitas positif atau negatif. Kecerdasan emosional memiliki peran lebih dari 80% dalam mencapai kesuksesan hidup dan menjadi salah satu faktor yang mempengaruhi daya tangkap mahasiswa dalam proses perkuliahan. Dengan mengetahui emosi-emosi mahasiswa, kita dapat membantu daya tangkap mahasiswa saat proses perkuliahan, serta dibutuhkannya sistem yang dapat mengidentifikasi emosi-emosi yang terbentuk saat perkuliahan berlangsung.
Sistem ini dibangun menggunakan Discrete Wavelet Transform yang mentransformasikan citra menjadi 4 sub-image. Citra hasil Discrete Wavelet Transform tampak kasar atau membentuk wajah yang dapat membedakan ekspresi mahasiswa. Hasil pengolahan citra Discrete Wavelet Transform di klasifikasikan dengan menggunakan Fuzzy K-nearest neighbor. Pengklasifikasian dibagi kedalam tiga ekspresi yaitu : Marah, Senang dan Sedih dengan akurasi 77,49%
Mood is a temporary emotional state. Mood usually has positive or negative quality values. Emotional intelligence has a role of more than 80% in achieving life success and is one of the factors that influence the students' capture power in the lecture process. By knowing the emotions of students, we can help capture students' ability during the lecture process, and the need for a system that can identify emotions that are formed during lectures.This system is built using the Discrete Wavelet Transform which transforms the image into 4 sub-images. The image of Discrete Wavelet Transform results looks rough or forms a face that can distinguish student expressions. The results of the Discrete Wavelet Transform image processing are classified using Fuzzy K-nearest neighbor. Classification is divided into three expressions, namely: Angry, Happy and Sad with accuracy of 77.49%
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1072
10.31937/sk.v11i1.1072
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 34-38
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 34-38
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1072/786
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1085
2021-06-11T10:43:40Z
SK:ART
KAJIAN LITERATUR : PERBANDINGAN SENSOR DALAM MENSORTIR MATERIAL BERBAHAN METAL
KAJIAN LITERATUR : PERBANDINGAN SENSOR DALAM MENSORTIR MATERIAL BERBAHAN METAL
Meidia, Hira
Prawira, Sandy
Dalam industri manufaktur banyak sekali digunakan komponen sensor yang berfungsi untuk mensortir barang sesuai kriteria yang dibutuhkan untuk mensortir material berbahan metal. Pada artikel ini, metode yang digunakan dalam mensortir material berbahan metal dan non-metal dibandingkan untuk mempelajari kelebihan metode-metode tersebut. Metode yang akan dibandingkan yaitu metode dengan menggunakan sensor proximity induktif, arus eddy, dan dual energy x-ray transmission. Pada sensor proximity induktif hanya dapat dipicu oleh material berbahan metal yang lewat didepannya. Sedangkan untuk metode arus eddy, pada ujung rotor konveyor belt ditanami magnet permamen sehingga menghasilkan arus yang dapat memisahkan bahan metal dan non-metal ketika rotor tersebut berputar. Pada metode dual energy x-ray transmission, jenis material benda yang lewat berdasarkan kepadatan dan warna akan terdeteksi oleh x-ray.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1085
10.31937/sk.v11i1.1085
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 16-19
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 16-19
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1085/782
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1093
2021-06-11T10:43:40Z
SK:ART
RANCANG BANGUN MEKANISME QUALITY OF SERVICE TERHADAP PROTOKOL RTP DAN SIP PADA ARSITEKTUR OPENFLOW
RANCANG BANGUN MEKANISME QUALITY OF SERVICE TERHADAP PROTOKOL RTP DAN SIP PADA ARSITEKTUR OPENFLOW
Alvianto, Richard
Hutagalung, Samuel
Halim, Franciscus Ati
Pada beberapa tahun terakhir, angka dari pengguna Voice Over Internet Protocol (VoIP) terus meningkat, dengan teknologi VoIP yang berkomunikasi melalui satu medium dalam jaringan. Hal ini tentu menimbulkan beberapa dampak terhadap VoIP seperti penggunaan bandwidth tidak terbagi dengan rata sesuai dengan kebutuhan masing-masing paket, dengan tuntutan VoIP yang membutuhkan delay, jitter, packet loss yang seminimal mungkin, untuk menjamin kualitas suara dan memberikan kenyamanan kepada pengguna VoIP. Pada penelitian ini dengan mekanisme Quality of Service (QoS) untuk memberikan prioritas terhadap protokol Real-time Transport Protocol (RTP) dan Session Initiation Protocol (SIP) dalam jaringan dirancang supaya kualitas VoIP tetap terjaga dan menghindari terjadi kemacetan terhadap paket RTP maupun SIP dalam proses antrian dalam jaringan. Analisis dalam penelitian ini dilakukan implementasikan pada emulator mininet dan diuji dengan beberapa parameter QoS, pada skenario mengujian jaringan tersebut dialiri paket dengan kecepatan 100 Mbps untuk menciptakan kondisi trafik yang padat dalam jaringan tersebut dan secara bersamaan dialiri juga trafik RTP, SIP dan data yang merupakan paket yang akan diukur nilai dari delay, jitter, packet loss. Hasil pengukuran dalam jaringan setelah diterapkan QoS menunjukan nilai dari delay, jitter, packet loss dapat berkurang dan juga memenuhi standar ITU-T G.1010 sehingga trafik VoIP dapat terjaga stabilitas dalam jaringan dan pengguna juga merasa nyaman, sedangkan pada kondisi jaringan tidak menerapkan QoS, trafik VoIP memperoleh nilai delay, jitter, packet loss yang cukup tinggi dan juga tidak memenuhi standar dari ITU-T G.1010 menyebabkan pengguna VoIP akan terganggu dengan keterlambatan dan terbuang paket VoIP yang membuat suara yang hilang dalam sebuah percakapan.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1093
10.31937/sk.v11i1.1093
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 9-15
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 9-15
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1093/781
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1098
2021-06-11T10:43:40Z
SK:ART
Kajian Literatur –Penggunaan Sensor Waterflow pada Proses Pencampuran Cairan Dalam Industri
Kajian Literatur –Penggunaan Sensor Waterflow pada Proses Pencampuran Cairan Dalam Industri
Putra, Dimas Farid Arief
Stefanus, Stefanus
Programmable Logic Controller (PLC) merupakan alat yang digunakan sebagai pengendali sistem pencampuran cairan yang terdiri dari sensor, dan aktuator. Sensor waterflow digunakan di dalam sistem ini karena sensor tersebut memiliki keluaran di dalam liter per jam sehingga lebih memudahkan proses komputasi PLC dalam pengaturan kran elektrik sebagai aktuator.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1098
10.31937/sk.v11i1.1098
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 20-23
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 20-23
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1098/783
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1103
2021-06-11T10:43:40Z
SK:ART
A Quick Walkthrough untuk Pengenalan Teknologi IC
Quick Walkthrough untuk Pengenalan Teknologi IC
Rizal, Aminuddin
Technology brought by human race has been evolving from known stone age, axe age, wood age and until we now reach the point where semiconductor or integrated circuit (IC) technology support human life. Its implicitly important to us to know, how current technology developed and what possible next technology look like. In this paper, we emphasize the quick walkthrough how our scientist and practical engineer made IC. Furthermore, a cheat sheet provided for a very basic equation we use when we made IC. Experiment on this research performed by using open source software which allow others to redo the same experiment. The outcome of this paper is well-structured introduction about IC technology and global discussion regarding next generation technology.
Technology brought by human race has been evolving from known stone age, axe age, wood age and until we now reach the point where semiconductor or integrated circuit (IC) technology support human life. Its implicitly important to us to know, how current technology developed and what possible next technology look like. In this paper, we emphasize the quick walkthrough how our scientist and practical engineer made IC. Furthermore, a cheat sheet provided for a very basic equation we use when we made IC. Experiment on this research performed by using open source software which allow others to redo the same experiment. The outcome of this paper is well-structured introduction about IC technology and global discussion regarding next generation technology.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1103
10.31937/sk.v11i1.1103
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 24-28
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 24-28
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1103/784
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1180
2021-06-11T10:43:40Z
SK:ART
Analisis Data ADS-B untuk Menentukan Probability of Target Report pada Sistem A-SMGCS
Analisis Data ADS-B untuk Menentukan Probability of Target Report pada Sistem A-SMGCS
Astawa, I Made
Yogiswara, I Putu Ananta
Agastani, Tahar
Sarotama, Afrias
A-SMGCS is an airport system that is used to improve the efficiency of using runways, apron and taxiways by maximizing runway capacities in all situations and weather while maintaining the required level of security. One of the parameters that becomes a requirement in the A-SMGCS system is the Probabillity of Target Report (PTR) whose value must be greater or equal to 95% in the area maneuver with update rate of the data one second [1]. Automatic Dependent SurveillanceBroadcast (ADS-B) is one of the cooperative sensors in the A-SMGCS system. The ADS-B sensor is a receiver that is used to capture ADS-B data from aircraft or vehicles equipped with ADS-B transmitters. The amount of ADSB data received by the ADS-B receiver and is needed for the A-SMGCS system is one of the factors that determine the Probability of Target Report (PTR). This paper will test three ADS-B receivers which will be selected for use as a cooperative sensor in the next A-SMGCS development. From the results of analysis and retrieval of data obtained by Radarcape ADS-B receiver more suitable for the development of the A-SMGCS system.
A-SMGCS is an airport system that is used to improve the efficiency of using runways, apron and taxiways by maximizing runway capacities in all situations and weather while maintaining the required level of security. One of the parameters that becomes a requirement in the A-SMGCS system is the Probabillity of Target Report (PTR) whose value must be greater or equal to 95% in the area maneuver with update rate of the data one second [1]. Automatic Dependent SurveillanceBroadcast (ADS-B) is one of the cooperative sensors in the A-SMGCS system. The ADS-B sensor is a receiver that is used to capture ADS-B data from aircraft or vehicles equipped with ADS-B transmitters. The amount of ADSB data received by the ADS-B receiver and is needed for the A-SMGCS system is one of the factors that determine the Probability of Target Report (PTR). This paper will test three ADS-B receivers which will be selected for use as a cooperative sensor in the next A-SMGCS development. From the results of analysis and retrieval of data obtained by Radarcape ADS-B receiver more suitable for the development of the A-SMGCS system.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1180
10.31937/sk.v11i1.1180
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 45-50
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 45-50
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1180/788
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1181
2021-06-11T10:43:40Z
SK:ART
Metode Deteksi ‘Potential Security Threats’ Pada ADS-B Data dengan Memonitor EM Emisi Radiasi pada Jaringan Ethernet
Metode Deteksi ‘Potential Security Threats’ Pada ADS-B Data dengan Memonitor EM Emisi Radiasi pada Jaringan Ethernet
Septiawan, Reza
Astawa, I Made
Rufiyanto, Arief
Agastani, Tahar
Precision, Navigation, and Timing (PNT) system based on Global Navigation Satellite System (GNSS) becomes significant in the air traffic management, especially in the use of Automatic Dependent Surveillance Broadcast system (ADS-B) for air traffic monitoring. Therefore the integrity of GNSS is significant to provide a reliable data necessary for ADS-B. GNSS Interference due to intentional or unintentional surrounding signal source may decrease the integrity of GNSS signal and therefore may result in the in-accurate position data of ADS-B message. ADS-B message itself is also vulnerable from potential security threats in their network. This paper proposed a methodology to detect potential security threats of ADS-B network system for both GNSS signal and ADS-B data by measuring and monitoring the electromagnetic radiated emission from ethernet cable IPv4 Cat5.
Precision, Navigation, and Timing (PNT) system based on Global Navigation Satellite System (GNSS) becomes significant in the air traffic management, especially in the use of Automatic Dependent Surveillance Broadcast system (ADS-B) for air traffic monitoring. Therefore the integrity of GNSS is significant to provide a reliable data necessary for ADS-B. GNSS Interference due to intentional or unintentional surrounding signal source may decrease the integrity of GNSS signal and therefore may result in the in-accurate position data of ADS-B message. ADS-B message itself is also vulnerable from potential security threats in their network. This paper proposed a methodology to detect potential security threats of ADS-B network system for both GNSS signal and ADS-B data by measuring and monitoring the electromagnetic radiated emission from ethernet cable IPv4 Cat5.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2019-08-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1181
10.31937/sk.v11i1.1181
ULTIMA Computing; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 39-44
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 1 (2019): Ultima Computing : Jurnal Sistem Komputer; 39-44
2549-4007
2355-3286
10.31937/sk.v11i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/1181/787
Copyright (c) 2019 Ultima Computing : Jurnal Sistem Komputer
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1255
2021-06-11T10:43:24Z
SK:ART
Sistem Pendukung Keputusan Penilaian Kinerja Karyawan PT. Injep Inti Cemerlang Dengan Metode AHP dan TOPSIS
Sistem Pendukung Keputusan Penilaian Kinerja Karyawan PT. Injep Inti Cemerlang Dengan Metode AHP dan TOPSIS
Pohan, Achmad Baroqah
Hadi, Sofian Wira
Suparni, Suparni
Selama ini penilaian kinerja karyawan PT. Injep Inti Cemerlang belum dilaksanakan secara optimal terutama dalam menilai kinerja karyawan. Selama ini penilaian kinerja hanya ditentukan dari hasil kerjanya, belum ada kriteria penilaian yang jelas. Untuk itu diperlukan sebuah sistem pendukung keputusan untuk membantu mencari alternatif terbaik dalam pemilihan karyawan tersebut. dalam penelitian ini akan dikembangkan sistem pendukung keputusan penilaian kinerja karyawan berdasarkan Sikap, Tanggung jawab, Absensi, Kedisiplinan dan Kerjasama. penelitian ini bertujuan untuk membangun sebuah sistem pendukung keputusan penilaian kinerja karyawan dengan menggunakan metode pengumpulan data secara observasi, wawancara dan memberikan kuisioner kepada karyawan PT. Injep Inti Cemerlang. Data-data yang dikumpulkan dilakukan proses analisis data dan menacari pembobotan nilai dengan menggunakan metode AHP dan untuk prangkingan menggunakan metode TOPSIS, dimana masing-masing kriteria dalam hal ini. faktor-faktor penilaian dan alternatif dalam hal ini para karyawan dibandingkan dengan kriteria yang sudah terbobot sehingga memberikan output nilai yang menghasilkan sistem yang memberikan penilaian terhadap karyawan. Sistem pendukung keputusan ini membantu melakukan penilaian kinerja setiap karyawan PT. Injep Inti Cemerlang dalam menentukan karyawan yang mempunyai kinerja paling baik
During this time the performance appraisal of PT. Injep Inti Cemerlang has not been implemented optimally, especially in assessing employee performance. So far, performance appraisal is only determined from the results of its work, there are no clear assessment criteria. For this reason, a decision support system is needed to help find the best alternative for the selection of employees. in this study a decision support system for employee performance appraisal will be developed based on Attitude, Responsibility, Attendance, Discipline and Cooperation. This study aims to design a decision support system for employee performance appraisal using data collection methods by observation, interviews and giving questionnaires to employees of PT. Injep Inti Cemerlang. The data collected is carried out the process of analyzing data and looking for weighting values using the AHP method and for ranking using the TOPSIS method, where each criterion is in this case. assessment factors and alternatives in this case employees are compared with criteria that have been weighted through the process of calculating the ahp and topsis method starting from giving the weighting of criteria by calculating with Ms.Excel and calculating with Expert Choice software. The results have been obtained from weighting the next ranking by the TOPSIS method. thus providing a value output that results in a system that assesses employees. This decision support system helps assess the performance of each employee of PT. Injep Inti Cemerlang in determining the employee who has the best performance
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-01-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1255
10.31937/sk.v11i2.1255
ULTIMA Computing; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 55-63
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 55-63
2549-4007
2355-3286
10.31937/sk.v11i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1255/870
Copyright (c) 2019 ULTIMA Computing
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1265
2021-06-11T10:43:24Z
SK:ART
Rancang Bangun Prototipe Sistem Multilateration 2-Dimensi Menggunakan Data ADS-B
Rancang Bangun Prototipe Sistem Multilateration 2-Dimensi Menggunakan Data ADS-B
Astawa, I Made
Azhari, Siswayudi
Yogiswara, I Putu Ananta
Pinastiko, Widrianto Sih
Multilateration (MLAT) is a technology used to determine the position of an object by using a Time Difference of Arrival (TDOA). MLAT is used at airports as one of the sensors in the A-SMGCS system to determine the position of an aircraft or vehicle. Developing an MLAT system should ideally be done at the airport because it requires aircraft and vehicle objects that are already equipped with ADS-B transmitters, but developing an MLAT system at the airport requires high costs for equipment installation and licensing because it risks disrupting airport operations and can disrupt existing systems .
The Center of Technology for Electronics - BPPT is developing the A-SMGCS system and is based in the serpong puspiptek area, where this area has a large enough area, making it possible to design prototypes of the MLAT system. Three ADS-B receivers are placed in three different buildings that are still connected to a computer network, so that data collection from each receiver can be done through the BPPT local network. The object to be calculated is using a car equipped with an ADS-B transmitter. To get more accurate results, every time the receiver is synchronized using GPS.
The experimental results show that there is a difference between the position data sent by the ADS-B transmitter and the results of the MLAT calculation, this is due to the difference in height of the three receivers, accuracy of GPS and accuracy of the ADS-B receiver timestamp used. Although there are differences, the proof of concept design of this system is in accordance with the characteristics of the MLAT system. The benefit gained from the design of this prototype is that it can develop an MLAT system in a place that is not high risk with low cost but the results can be applied at the airport.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-01-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1265
10.31937/sk.v11i2.1265
ULTIMA Computing; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 64-70
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 64-70
2549-4007
2355-3286
10.31937/sk.v11i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1265/871
Copyright (c) 2019 ULTIMA Computing
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1294
2021-06-11T10:43:24Z
SK:ART
Analisis Kinerja Algoritma Quick Double Merge Sort Paralel Menggunakan openMP
Analisis Kinerja Algoritma Quick Double Merge Sort Paralel Menggunakan openMP
Yudiswara, I Nyoman Aditya
Suganda, Abba
Processor technology currently tends to increase the number of cores more than increasing the clock speed. This development is very useful and becomes an opportunity to improve the performance of sequential algorithms that are only done by one core. This paper discusses the sorting algorithm that is executed in parallel by several logical CPUs or cores using the openMP library. This algorithm is named QDM Sort which is a combination of sequential quick sort algorithm and double merge algorithm. This study uses a data parallelism approach to design parallel algorithms from sequential algorithms. The data used in this study are the data that have not been sorted and also the data that has been sorted is integer type which is stored in advance in a file. The parameter measured to determine the performance of the QDM Sort algorithm is speedup. In a condition where a large amount of data is above 4096 and the number of threads in QDM Sort is the same as the number of logical CPUs, the QDM Sort algorithm has a better speedup compared to the other parallel sorting algorithms discussed in this study. For small amounts of data it is still better to use sequential sorting algorithm.
Processor technology currently tends to increase the number of cores more than increasing the clock speed. This development is very useful and becomes an opportunity to improve the performance of sequential algorithms that are only done by one core. This paper discusses the sorting algorithm that is executed in parallel by several logical CPUs or cores using the openMP library. This algorithm is named QDM Sort which is a combination of sequential quick sort algorithm and double merge algorithm. This study uses a data parallelism approach to design parallel algorithms from sequential algorithms. The data used in this study are the data that have not been sorted and also the data that has been sorted is integer type which is stored in advance in a file. The parameter measured to determine the performance of the QDM Sort algorithm is speedup. In a condition where a large amount of data is above 4096 and the number of threads in QDM Sort is the same as the number of logical CPUs, the QDM Sort algorithm has a better speedup compared to the other parallel sorting algorithms discussed in this study. For small amounts of data it is still better to use sequential sorting algorithm.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-01-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1294
10.31937/sk.v11i2.1294
ULTIMA Computing; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 95-102
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 95-102
2549-4007
2355-3286
10.31937/sk.v11i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1294/875
Copyright (c) 2019 ULTIMA Computing
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1454
2021-07-27T08:51:04Z
SK:ART
Perancangan Teknik Kriptografi Block Cipher Berbasis Pola Tarian Sajojo Papua
Perancangan Teknik Kriptografi Block Cipher Berbasis Pola Tarian Sajojo Papua
Prihanto, Dwayne Jeremy Euagellino
Pakereng, Magdalena Ineke
Cryptography is a science to maintain the security and confidentiality of an information. In this research we designed Block Cipher Cryptography 64 bit Based on Tarian Sajojo Papua Pattern to build new cryptography. In this critique is designed with 10 rounds, where each round there are 4 processes. In each round there are 4 patterns for the plaintext process and 4 patterns for the key process. In second and fourth process is transformed with S-BOX table to get a more random ciphertext. Testing is also done using Avalanche Effect and Correlation value where the average character change reaches 49,69%, so it can be used as an alternative in securing data.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-01-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1454
10.31937/sk.v11i2.1454
ULTIMA Computing; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 71-80
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 71-80
2549-4007
2355-3286
10.31937/sk.v11i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1454/872
Copyright (c) 2019 ULTIMA Computing
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1455
2021-07-27T08:53:10Z
SK:ART
Penerapan Metode Fuzzy AHP untuk Sistem Pendukung Keputusan Pemilihan Pemasok Terbaik
Penerapan Metode Fuzzy AHP untuk Sistem Pendukung Keputusan Pemilihan Pemasok Terbaik
Tobing, Fenina Adline Twince
Dzulhaq, M Iqbal
Sidiq, Ramzi Fajar
Keberadaan pemasok sangat menentukan kelancaran proses produksi dan produk yang akan dihasilkan. Masalah yang dihadapi perusahaan adalah proses evaluasi atau pemilihan pemasok terbaik masih bersifat manual, sulitnya menentukan pemasok mana yang memiliki performansi terbaik, keterlambatan datangnya bahan baku mengakibatkan keterlambatan proses produksi yang berujung pada tidak tercapainya jumlah produksi. Pada penelitian ini dibangun Sistem Pendukung Keputusan (SPK) untuk pemilihan pemasok terbaik menggunakan 4 kriteria yang disesuaikan dengan kondisi dan kebutuhan perusahaan yaitu harga, stok, delivery, dan mutu. Masing-masing kriteria tersebut akan dibobotkan menggunakan metode Fuzzy AHP. Pada implementasinya dihasilkan bobot kriteria harga sebesar 0,632, stok 0,352, delivery 0,084, mutu 0,107. Hasil pembobotan ini akan digunakan untuk mendukung penilaian pemasok terbaik dan akan diperoleh nilai masing-masing pemasok sehingga diketahui siapa pemasok terbaik
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-01-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1455
10.31937/sk.v11i2.1455
ULTIMA Computing; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 90-94
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 90-94
2549-4007
2355-3286
10.31937/sk.v11i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1455/873
Copyright (c) 2019 ULTIMA Computing
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1456
2021-07-27T08:51:56Z
SK:ART
Implementasi Jaringan Saraf Tiruan Backpropagation untuk Pengenalan Karakter pada Dokumen Tercetak
Implementasi Jaringan Saraf Tiruan Backpropagation untuk Pengenalan Karakter pada Dokumen Tercetak
Suryadibrata, Alethea
Chandra, Dian Puspita
Digital documents from the scanner device cannot be edited. To be able to edit digital documents, Optical Character Recognition (OCR) technology is needed. This research was conducted with the aim of implementing backpropagation artificial neural networks in printed documents and to find out how the accuracy of the implementation of backpropagation artificial neural networks in printed documents. This research uses multilayer networks with three layers. The input layer consists of 225 nodes with 15 × 15 pixels digital image as input, hidden layer consists of 110 nodes, and the output layer consists of 54 nodes representing A-Z, a-z, point punctuation (.), and comma punctuation (,). The learning rate used in this research is 0,29. The average accuracy level obtained from the implementation of backpropagation artificial neural networks in this research was 94 % for Ms Arial Unicode font type, 96,6 % for Tahoma font type, and 94 % for Times New Roman font type.
Dokumen digital yang dihasilkan dari alat pemindai tidak dapat diedit. Sehingga, untuk dapat mengedit dokumen digital tersebut dibutuhkan teknologi Optical Character Recognition (OCR). Penelitian ini dilakukan dengan tujuan untuk mengimplementasikan jaringan saraf tiruan backpropagationpada dokumen tercetak dan untuk mengetahui bagaimana tingkat akurasi dari implementasi jaringan saraf tiruan backpropagationpada dokumen tercetak. Penelitian inimenggunakan jaringan lapisan banyak (multilayer network)dengan tiga lapisan. Lapisan input terdiri dari 225 node dengan masukan berupa citra digital berukuran 15 × 15 piksel, lapisan tersembunyi terdiri dari 110 node, dan lapisan output terdiri dari 54 node yang merepresentasikan karakter A-Z, a-z, serta tanda baca titik (.) dan koma (,). Learning rateyang digunakan dalam penelitian ini adalah 0,29. Rata-rata tingkat akurasi yang didapat dari implementasi jaringan saraf tiruan backpropagationdalam penelitian ini adalah 94 % untuk jenis font Arial Unicode Ms, 96,6 % untuk jenis font Tahoma, dan 94 % untuk jenis font Times New Roman.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-01-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1456
10.31937/sk.v11i2.1456
ULTIMA Computing; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 81-89
Ultima Computing : Jurnal Sistem Komputer; Vol 11 No 2 (2019): Ultima Computing : Jurnal Sistem Komputer; 81-89
2549-4007
2355-3286
10.31937/sk.v11i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1456/874
Copyright (c) 2019 ULTIMA Computing
http://creativecommons.org/licenses/by-nc-sa/4.0
oai:ojs.pkp.sfu.ca:article/1541
2021-06-11T10:41:31Z
SK:ART
Rancang Bangun Perangkat Belajar Braille Elektronik Berbasis Raspberry Pi
Rancang Bangun Perangkat Belajar Braille Elektronik Berbasis Raspberry Pi
hidayat, Hidayat
Yusuf, Muhammad
The aim of the present research was to design and implement a braille electronic learning device for helping children who are blind in studying. The method used was an experimental method that includes the study of literature, the design process, the process of implementing tool manufacturing and also functional testing. This is made easier for blind people to learn to arrange words, translate words. The system designed consists of the Raspberry Pi as the main data processor, six push-buttons as input for braille codes, five push-buttons as control buttons, external MMC memory as a storage place for the operating system documents used by Raspberry Pi and also as a storage place for digital information such as applications that are made and also voices and the speaker functions as voice output, and also the LCD functions to display letters or numbers entered by users, it is only intended for teachers or instructors who can see when accompanying blind students. The overall system test results produce the expected output, which can speak words or numbers and translate words in two languages (Bahasa-English) correctly.
The aim of the present research was to design and implement a braille electronic learning device for helping children who are blind in studying. The method used was an experimental method that includes the study of literature, the design process, the process of implementing tool manufacturing and also functional testing. This is made easier for blind people to learn to arrange words, translate words. The system designed consists of the Raspberry Pi as the main data processor, six push-buttons as input for braille codes, five push-buttons as control buttons, external MMC memory as a storage place for the operating system documents used by Raspberry Pi and also as a storage place for digital information such as applications that are made and also voices and the speaker functions as voice output, and also the LCD functions to display letters or numbers entered by users, it is only intended for teachers or instructors who can see when accompanying blind students. The overall system test results produce the expected output, which can speak words or numbers and translate words in two languages (Bahasa-English) correctly.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1541
10.31937/sk.v12i1.1541
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 1-8
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 1-8
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1541/940
Copyright (c) 2020 Hidayat hidayat, Muhammad Yusuf
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1605
2021-06-11T10:41:31Z
SK:ART
Implementasi Kanopi Otomatis untuk Kenyamanan Termal
Implementasi Kanopi Otomatis untuk Kenyamanan Termal
Mahalim, Jason Adrian
Samuel, Filipus
Wijaya, Filbert
Rahmatulloh, Muhamad Aliefian
Aktivitas manusia tidak akan pernah terlepas dari kegiatan luar ruangan. Namun karena pengaruh cuaca, aktivitas tersebut bisa terganggu seketika. Atas masalah tersebut, kami membuat proyek berupa kanopi otomatis yang bisa mendeteksi cuaca dan intensitas cahaya. Mikrokontroler yang digunakan pada proyek ini adalah Arduino Uno. Untuk mendeteksi intensitas cahaya matahari, sensor yang digunakan adalah Light Intensity Sensor, dan sensor yang digunakan untuk mendeteksi kondisi cuaca adalah sensor hujan. Tujuan dibuatnya proyek ini adalah untuk meningkatkan kenyamanan termal yang dimiliki oleh setiap orang ketika beraktivitas di luar ruangan.
Kata Kunci : Kanopi, Arduino, Kenyamanan Termal
Aktivitas manusia tidak akan pernah terlepas dari kegiatan luar ruangan. Namun karena pengaruh cuaca, aktivitas tersebut bisa terganggu seketika. Atas masalah tersebut, kami membuat proyek berupa kanopi otomatis yang bisa mendeteksi cuaca dan intensitas cahaya. Mikrokontroler yang digunakan pada proyek ini adalah Arduino Uno. Untuk mendeteksi intensitas cahaya matahari, sensor yang digunakan adalah Light Intensity Sensor, dan sensor yang digunakan untuk mendeteksi kondisi cuaca adalah sensor hujan. Tujuan dibuatnya proyek ini adalah untuk meningkatkan kenyamanan termal yang dimiliki oleh setiap orang ketika beraktivitas di luar ruangan.
Kata Kunci : Kanopi, Arduino, Kenyamanan Termal
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1605
10.31937/sk.v12i1.1605
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 13-16
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 13-16
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1605/942
Copyright (c) 2020 Jason Adrian Mahalim, Filipus Samuel, Filbert Wijaya, Muhamad Aliefian Rahmatulloh
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1611
2021-06-11T10:41:31Z
SK:ART
Sistem Pendeteksi Pencemaran Udara Portabel Menggunakan Sensor MQ-7 dan MQ-135
Sistem Pendeteksi Pencemaran Udara Portabel Menggunakan Sensor MQ-7 dan MQ-135
Rosa, Arida Amalia
Simon, Bryan Alexis
Lieanto, Kevin Sherdy
Keterbatasan indera penciuman manusia mendeteksi keberadaan gas gas yang tidak terlihat dapat membahayakan kesehatan. Oleh sebab itu, diperlukan suatu alat pendekteksi dalam pencemaran udara, sehingga menjadi acuan guna untuk mengetahui tingkat pencemaran udara tersebut. Untuk mendeteksi kadar polusi udara menggunakan sensor gas MQ-7 yang peka terhadap gas karbon monoksida, stabil dan berumur panjang, dan sensor gas MQ-135 yang dapat digunakan untuk menentukan kadar konsentrasi gas amonia, bensol, alkohol. Dan untuk tampilan menggunakan LCD yang sebelumnya di proses oleh mikrokontroler Arduino nano.
Keterbatasan indera penciuman manusia mendeteksi keberadaan gas gas yang tidak terlihat dapat membahayakan kesehatan. Oleh sebab itu, diperlukan suatu alat pendekteksi dalam pencemaran udara, sehingga menjadi acuan guna untuk mengetahui tingkat pencemaran udara tersebut. Untuk mendeteksi kadar polusi udara menggunakan sensor gas MQ-7 yang peka terhadap gas karbon monoksida, stabil dan berumur panjang, dan sensor gas MQ-135 yang dapat digunakan untuk menentukan kadar konsentrasi gas amonia, bensol, alkohol. Dan untuk tampilan menggunakan LCD yang sebelumnya di proses oleh mikrokontroler Arduino nano.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1611
10.31937/sk.v12i1.1611
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 23-28
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 23-28
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1611/944
Copyright (c) 2020 Arida Amalia Rosa, Bryan Alexis Simon, Kevin Sherdy Lieanto
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1612
2021-07-27T08:56:05Z
SK:ART
Penggunaan Keran Air Otomatis dalam Penghematan Air
Penggunaan Keran Air Otomatis dalam Penghematan Air
Pramudya, Antonius Rildo
Alfeto, Alfeto
Cristianti, Chaterine
Air merupakan sumber penting bagi kehidupan manusia. Sekarang ini, air bersih sudah mulai langka dan oleh sebab itu perlunya menghemat air. Pada penelitian ini kami membuat keran air otomatis untuk mengisi wadah. Penggunaan keran otomatis ini bertujuan untuk menghentikan aliran air ketika wadah yang diisi mencapai ketinggian yang diinginkan. Alat yang dipergunakan adalah arduino uno, sensor ultrasonik, katup solenoid, dan potensio. Sebelum dipergunakan alat tersebut harus dikalibrasi terlebih dahulu sebelum digunakan sehari-hari. Namun pada percobaan keran air otomatis hanya akan berhenti berdasarkan ketinggian yang sudah ditentukan oleh kami.
kata kunci: keran air, sensor ultrasonik, arduino, katup solenoid
Water is an important source for human life. Nowadays, clean water has begun to be rare and therefore it is necessary to conserve water. In this study we made an automatic water faucet to fill the container. The use of this automatic tap aims to stop the water flow when the filled container reaches the desired height. The tools used are Arduino uno, ultrasonic sensors, solenoid valves, and potentials. Before use the appliance must be calibrated first before being used daily. However, in an automatic water faucet experiment it will only stop based on the height set by us.
Index Terms : Water faucet, ultrasonic sensor, arduino uno, solenoid valve.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1612
10.31937/sk.v12i1.1612
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 17-22
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 17-22
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1612/943
Copyright (c) 2020 Antonius Rildo Pramudya, Alfeto Alfeto, Chaterine Cristianti
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1613
2021-06-11T10:41:31Z
SK:ART
Passive Keyless Entry Locking Door With ESP32
Passive Keyless Entry Locking Door With ESP32
Wibisono, Arya
Nugraha, MB
pada jaman modern ini, teknologi semakin canggih dan bisa digunakan oleh siapa saja, contohnya adalah lockpicking yang alatnya dapat dibeli oleh siapa saja dan mudah untuk dipelajari. Oleh karena itu, kunci fisik semakin kuno dan mudah untuk dibobol oleh siapa saja. Dengan menerapkan sistem passive keyless entry yang sudah diterapkan pada mobil jaman sekarang, menambah keamanan dan kenyamanan dari pengguna mobil tersebut. sistem itu kita coba terapkan pada ESP32 dan membuat kunci digital walaupun pada penilitian ini masih kurang pada sistem keamanan kartu menggunakan digital signature algorithm, sistem passive keyless entry berjalan dengan sesuai harapan dengan menggunakan RFID sebagai input pengenal dari UID masing – masing kartu RFID yang dianggap unik dan mudah untuk digunakan.
in this modern era, technology is increasingly sophisticated and can be used by anyone, for example, is a lock that can be bought by anyone and is easy to learn. Therefore, the physical key is getting old and easy to be broken by anyone. By implementing a passive keyless entry system that has been applied to today's cars, adding to the safety and comfort of the car user. we try to apply the system to ESP32 and make digital keys in this research still lacking in card security systems using digital signature algorithms, passive keyless entry systems run as expected by using RFID as input identifier from the UID of each RFID card which is proven to be unique and easy to use.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1613
10.31937/sk.v12i1.1613
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 9-12
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 9-12
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1613/941
Copyright (c) 2020 Arya Wibisono, MB Nugraha
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1618
2021-07-27T08:56:38Z
SK:ART
Analisis Keefektifan Penggunaan Filter FIR dan IIR pada Sinyal Pernapasan EMGdi dengan Simulasi MATLAB
Analisis Keefektifan Penggunaan Filter FIR dan IIR pada Sinyal Pernapasan EMGdi dengan Simulasi MATLAB
Leonard, Christopher
Shabrina, Nabila Husna
Instrumentasi medis digunakan untuk mendapatkan dan merekam data sinyal dari tubuh pasien salah satunya adalah sinyal pernapasan. Data dari sinyal pernapasan tersebut mampu mendiagnosa kesehatan pernapasan pasien. Dalam memperoleh data sinyal tersebut, terdapat noise yang mengganggu informasi sinyal yang diperlukan. Pada artikel ini, sinyal input akan dilakukan filter dengan dua tipe filter (filter FIR dengan metode window method dan filter IIR dengan pole-zero placement method atau bilinear transformation method) dan dibandingkan keefektifan kedua tipe filter dalam mengurangi atau menghilangkan noise sinyal. Kedua filter memiliki frekuensi cut-off sebesar 50 Hz. Sinyal output menunjukkan bahwa sinyal noise ECG lebih efektif dihilangkan menggunakan filter IIR. Oleh karena itu, filter IIR lebih direkomendasikan digunakan dalam instrumentasi medis karena keefektifan serta penggunaan perangkat keras yang minimum.
Medical instrumentations are used to retrieve and record signal data in the patient’s body such as respiratory signals. The data from the respiratory signal is able to diagnose the patient’s respiratory health. Unfortunately, in retrieving signal data, there are noises that interfere with the required signal information. In this article, the signal input will be filtered with two types of filter (FIR filter with window method and IIR filter with pole-zero placement method or bilinear transformation method) and compared their effectiveness to reduce or eliminate the noise signal. Both filters have a cut-off frequency of 50 Hz. The outputsignal shows that the noise ECG signal is more effective to be eliminated with an IIR filter because of its characteristic filter. Therefore, the IIR filter is morerecommended being used in medical instrumentation for its effectiveness and minimum hardware required.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1618
10.31937/sk.v12i1.1618
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 29-34
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 29-34
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1618/945
Copyright (c) 2020 CHRISTOPHER LEONARD . , Nabila Husna Sabrin
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1620
2021-06-11T10:41:31Z
SK:ART
Pengaplikasian Face Recognition 3 Dimensi Untuk Keamanan
Pengaplikasian Face Recognition 3 Dimensi Untuk Keamanan
Mahalim, Jason Adrian
Rahmatulloh, Muhamad Aliefian
Febrianto, Muhamad Rizky
Shabrina, Nabila Husna
Face recognition is one of the biometric categories which uses face as the identifier. Currently, there are two versions of face recognition, 2 dimensional and 3 dimensional. This research uses 3 dimensional face recognition, and the goal for this research is for comparing the accuracy between 2 dimensional and 3 dimensional face recognition, analyze the performance of 3 dimensional face recognition, and applying 3dimensional face recognition for security measure, namely for automatic door lock using face recognition. Face Alignment Network used as the method for this 3 dimensional face recognition. This research prove that 3 dimensional face recognition have better accuracy than its predecessor, however some weakness is also found in this research, i.e. image resolution, lighting of the photo, angle of the face when the photo taken will govern the accuracy of the 3 dimensional face recognition and 3 dimensional face recognition can’t differentiatebetween twins brother faces.Key word : Face recognition, accuracy
Face recognition is one of the biometric categories which uses face as the identifier. Currently, there are two versions of face recognition, 2 dimensional and 3 dimensional. This research uses 3 dimensional face recognition, and the goal for this research is for comparing the accuracy between 2 dimensional and 3 dimensional face recognition, analyze the performance of 3 dimensional face recognition, and applying 3dimensional face recognition for security measure, namely for automatic door lock using face recognition. Face Alignment Network used as the method for this 3 dimensional face recognition. This research prove that 3 dimensional face recognition have better accuracy than its predecessor, however some weakness is also found in this research, i.e. image resolution, lighting of the photo, angle of the face when the photo taken will govern the accuracy of the 3 dimensional face recognition and 3 dimensional face recognition can’t differentiatebetween twins brother faces.Key word : Face recognition, accuracy
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1620
10.31937/sk.v12i1.1620
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 35-39
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 35-39
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1620/948
Copyright (c) 2020 Jason Adrian Mahalim, Muhamad Aliefian Rahmatulloh, Muhamad Rizky Febrianto, Nabila Husna Shabrina
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1621
2021-07-27T08:58:00Z
SK:ART
Analisis Aplikasi Filter FIR dan Filter IIR dalam Pra-pemrosesan Sinyal Elektroensefalografi
Analisis Aplikasi Filter FIR dan Filter IIR dalam Pra-pemrosesan Sinyal Elektroensefalografi
Caroline, Caroline
Shabrina, Nabila Husna
Ao, Melania Regina
Laurencya, Nadya
Lee, Vanessa
Abstract – Electroencephalography (EEG) is a method used to analyze brain activities, detect abnormalities in brain, and diagnose brain-related disease. To extract information from EEG signal, preprocessing steps such as Fast Fourier Transform (FFT), filter, and wavelet decomposition will be needed. This paper primarily focuses on implementation of Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filter design in EEG signal preprocessing in MATLAB software. The result of the simulation indicates that each filter design implemented in EEG preprocessing has different performance and side effect toward signal processing parameters such as phase distortion, amplitude ratio, and processing time. Filter design type implementation also affect power and entropy calculation result.
Keywords – EEG, FIR filter digital, IIR filter digital, Wavelet Decomposition, GUI-MATLAB
Abstract – Electroencephalography (EEG) is a method used to analyze brain activities, detect abnormalities in brain, and diagnose brain-related disease. To extract information from EEG signal, preprocessing steps such as Fast Fourier Transform (FFT), filter, and wavelet decomposition will be needed. This paper primarily focuses on implementation of Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filter design in EEG signal preprocessing in MATLAB software. The result of the simulation indicates that each filter design implemented in EEG preprocessing has different performance and side effect toward signal processing parameters such as phase distortion, amplitude ratio, and processing time. Filter design type implementation also affect power and entropy calculation result.
Keywords – EEG, FIR filter digital, IIR filter digital, Wavelet Decomposition, GUI-MATLAB
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1621
10.31937/sk.v12i1.1621
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 40-48
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 40-48
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1621/946
Copyright (c) 2020 Caroline Caroline, Nabila Husna Shabrina, Melania Regina Ao, Nadya Laurencya, Vanessa Lee
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1631
2021-07-27T08:59:00Z
SK:ART
Perbandingan Pola Sinyal Penyakit Myocardial Infarction dengan Jantung Normal Menggunakan Metode Wavelet Symlet
Perbandingan Pola Sinyal Penyakit Myocardial Infarction dengan Jantung Normal Menggunakan Metode Wavelet Symlet
Gilbert, Markus Aminius
Shabrina, Nabila Husna
Wijaya, Andre
Wijaya, Jeremy Pratama
Pada sinyal kardiografi manusia sehat maupun pengidap myocardial infarction mengandung banyak derau. Untuk itu perlu pengolahan sinyal yang sesuai sehingga informasi yang dikandung oleh sinyal tersebut dapat dideteksi dengan mudah.
Tahapan penelitian meliputi pencarian data, pra pemrosesan, pengolahan sinyal dengan metode denoise Wavelet Symlet, dan perbandingan kualitatif pola sinyal kardiografi hasil pengolahan sinyal manusia normal dengan pengidap penyakit myocardial infarction.
Untuk menghilangkan derau pada sinyal EKG, metode denoise menggunakan Wavelet Symlet terbukti lebih baik daripada FIR filter Hamming Windows. MATLAB menjadi salah satu pilihan perangkat lunak yang dapat digunakan dalam memproses sinyal kardiografi dengam metode denoise Wavelet Symlet, terbukti memiliki reliabilitas yang yang cukup tinggi berdasarkan analisis kualitatif. Percobaan ini juga membuktikan bahwa pola sinyal kardiografi manusia dengan gangguan myocardial infarction cukup acak dan dan berbeda antara satu pasien dengan pasien lainnya. Namun, pola detakan jantung yang lebih lambat, amplitudo yang lebih besar, dan kelainan pada bagian sinyal P,T serta jarak Q-S yang regang dapat menjadi acuan diagnosa seseorang mengalami gangguan myocardial infarction.
On the signal of healthy human cardiography and people with myocardial infarction contain a lot of noise. For this reason, it is necessary to process the appropriate signal so that the information contained by the signal can be detected easily. Stages of research include data search, pre-processing, signal processing with the denoise Wavelet Symlet method, and qualitative comparison of cardiographic signal patterns resulting from normal human signal processing with myocardial infarction. To eliminate noise on ECG signals, the denoise method using Wavelet Symlet is proven to be better than the Finite Impulse Response (FIR) Hamming Windows filter. MATLAB is one of the software options that can be used in processing cardiographic signals with denoise Wavelet Symlet method, proven to have a fairly high reliability based on qualitative analysis. This trial also proved that the pattern of human cardiographic signals with myocardial infarction disorders was quite random and and differed from one patient to another. However, slower heart rate patterns, greater amplitude, and abnormalities in the P, T signal and stretching Q-S distances can be a reference for diagnosing someone with myocardial infarction.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-07-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1631
10.31937/sk.v12i1.1631
ULTIMA Computing; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 49-56
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 1 (2020): Ultima Computing : Jurnal Sistem Komputer; 49-56
2549-4007
2355-3286
10.31937/sk.v12i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1631/947
Copyright (c) 2020 Markus Aminius Gilbert, Nabila Husna Shabrina, Andre Wijaya, Jeremy Pratama Wijaya
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1709
2021-06-11T10:41:05Z
SK:ART
Analisis Perhitungan Beban Pendinginan Ruang Dhammasala Vihara Padumuttara menggunakan Metode CLTD
Analisis Perhitungan Beban Pendinginan Ruang Dhammasala Vihara Padumuttara menggunakan Metode CLTD
Jaya, Ananda Karuna
Harahap, Caesar Ondolan
Andarini, Rahmi
Dhammasala room of Padumuttara Temple has an indoor temperature of 28,56oC and relative humidity of 80,6%. According to SNI 03-6572-2001 and a previous literature study, this temperature is outside the thermal comfort zone for tropical climate. Aiming to improve thermal comfort of Dhammasala room with an HVAC system efficiently, the cooling load of the room is analyzed using the Cooling Load Temperature Difference (CLTD) method. The results are also compared with results from other cooling load calculation sofware. The recommended HVAC System for Dhammasala room of Padumuttara Temple is a chiller with a capacity of 30-40TR.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1709
10.31937/sk.v12i2.1709
ULTIMA Computing; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 57-64
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 57-64
2549-4007
2355-3286
10.31937/sk.v12i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1709/982
oai:ojs.pkp.sfu.ca:article/1742
2021-07-27T09:00:21Z
SK:ART
Monitoring System For Decorative Plants Using Arduino Nano Microcontroller
Monitoring System For Decorative Plants Using Arduino Nano Microcontroller
Haya, Rizky Fitria
Gunawan, Chicha Rizka
Amir, Fazri
Tanaman hias biasa digunakan untuk mendekorasi ruangan atau memperindah pekarangan rumah. Dalam era teknologi saat ini dimana setiap orang memiliki kesibukan yang tinggi, maka terkadang membuat orang tidak sempat bahkan lupa memperhatikan tanaman hias di rumahnya. Oleh karena itu, tujuan dibentuknya sistem monitoring tanaman hias ini adalah untuk mengetahui kondisi tanaman dengan menampilkan gambar bahagia dan sedih pada layer LCD. System ini menggunakan mikrokontroler berupa arduino nano sebagai alat pengendali utama dan terhubung dengan sensor lainnya seperti sensor LDR, soil moisture, dan DHT11. Hasil dari penelitian ini menunjukkan bahwa tanaman hias tersebut berada dalam kondisi yang baik jika menampilkan gambar bahagia, yaitu ketika hasil pembacaan pencahayaan, kelembapan tanah, dan suhu yang diperoleh sesuai dengan nilai yang telah ditetapkan pada program. Begitu pun sebaliknya, jika sistem menampilkan gambar sedih, maka hal tersebut menunjukkan bahwa keadaan tanaman hias tersebut tidak baik karena sedikitnya pencahayaan, kurangnya kelembapan tanah, dan rendahnya suhu yang diterima oleh tanaman hias. Nilai yang telah ditetapkan pada sensor kelembapan tanah dan pencahayaan berada pada rentang 50% sampai 95%, sedangkan nilai yang ditetapkan pada sensor suhu berada di rentang 15°C sampai 35°C.
Ornamental plants are used to decorate the room or the yard. In the current technology era where everyone has a high level of activity, it sometimes makes them forgot to pay attention to the ornamental plants in their homes. Therefore, the purpose of establishing this plants monitoring system is to determine the condition of the plant by displaying smile and sad face images on the LCD. This system uses a microcontroller likes Arduino Nano as the main controller and connected to other sensors such as the LDR sensor, soil moisture, and DHT11. The results of this study indicate that the ornamental plant is in good condition if it displays happy face, that is when the results of the lighting, soil moisture, and temperature are obtained accordance the values set in the program. Otherwise, if the system displays a sad face, it shows that the condition of the ornamental plants is not good because of the lack of lighting, soil moisture, and low temperatures received by the ornamental plants. The values set on the soil moisture and lighting sensor are in the range of 50% to 95%, while the values set on the temperature sensor are in the range of 15°C to 35°C.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1742
10.31937/sk.v12i2.1742
ULTIMA Computing; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 65-71
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 65-71
2549-4007
2355-3286
10.31937/sk.v12i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1742/983
Copyright (c) 2020 Rizky Fitria Haya, Chicha Rizka Gunawan, Fazri Amir
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1777
2021-06-11T10:41:05Z
SK:ART
Studi Pendahuluan Perancangan Desain Tangan Mekatronika Untuk Bedah Umum Jarak Jauh
Studi Pendahuluan Perancangan Desain Tangan Mekatronika Untuk Bedah Umum Jarak Jauh
Omar, Julando
Kho, Jason
Hutagalung, Samuel
During the current situation, the availability of surgeons in remote areas is limited. There is a need to be still able to perform general operations without the doctor being physically present in the operating room. This research is a preliminary study of designing a remotely controlled mechatronic hand to perform general surgery. With this design, it is hoped that in the future, the physical presence of doctors will no longer be an obstacle in achieving general surgery in locations that are difficult to reach.
During the current situation, the availability of surgeons in remote areas is limited. There is a need to be still able to perform general operations without the doctor being physically present in the operating room. This research is a preliminary study of designing a remotely controlled mechatronic hand to perform general surgery. With this design, it is hoped that in the future, the physical presence of doctors will no longer be an obstacle in achieving general surgery in locations that are difficult to reach.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1777
10.31937/sk.v12i2.1777
ULTIMA Computing; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 72-78
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 72-78
2549-4007
2355-3286
10.31937/sk.v12i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1777/984
Copyright (c) 2020 Julando Omar, Jason Kho, Samuel Hutagalung
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1782
2021-06-11T10:41:05Z
SK:ART
Tahapan Desain dan Implementasi Model Machine Learning untuk Sistem Tertanam
Tahapan Desain dan Implementasi Model Machine Learning untuk Sistem Tertanam
Rizal, Aminuddin
machine learning and edge computing currently becomes popular technology used in any discipline. Flexibility and adapt to the problem are the main advantages of its technology. In this paper, we explain step-by-step way to make a lightweight machine learning model especially intended for embedded system application. We use open source machine learning tool called as Weka to design the model. Moreover, we performed a simple stress recognition experiment to make our own dataset for evaluation. We evaluate algorithm complexity and accuracy for different well-known classifier such as support vector machine, simple logistic and hoeffding tree.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1782
10.31937/sk.v12i2.1782
ULTIMA Computing; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 79-85
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 79-85
2549-4007
2355-3286
10.31937/sk.v12i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1782/985
Copyright (c) 2020 Aminuddin Rizal
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1783
2021-06-11T10:41:05Z
SK:ART
Metode Estimasi Suhu Minyak pada Transformator Tenaga melalui Pengukuran Suhu Body Berbasis IoT
Metode Estimasi Suhu Minyak pada Transformator Tenaga melalui Pengukuran Suhu Body Berbasis IoT
Rizki, Rizal Alfa
Tadeus, Dista Yoel
Mangkusasmito, Fakhruddin
Winarno, Heru
Ariyanto, Eko
Oil cooled power transformer has important role in the electricity distribution system. Its windings were immersed in oil as an insulating medium and also as a cooler. This oil would be heated up due to several things, the most significant was heat generated by winding’s power loss. The monitoring of oil temperature on the transformer was always done routinely every day to maintain its performance and health condition. IoT based measurements could improved efficiency and minimized manpower resources. To realize this the indirect non-destructive measurement method was proposed to estimate transformator’s temperature oil. It will corellate the oil temperature and body temperature through a constant calibration factor derived from calculations. Conducted experiment applied to specific existing transformator and followed by calculations resulted a calibration factor = 1.7749. The smallest average of estimated temperature error was lied in the range of 40 - 90 degrees Celcius.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1783
10.31937/sk.v12i2.1783
ULTIMA Computing; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 86-90
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 86-90
2549-4007
2355-3286
10.31937/sk.v12i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1783/986
Copyright (c) 2020 Rizal Alfa Rizki, Dista Yoel Tadeus, Fakhruddin Mangkusasmito, Heru Winarno, Eko Ariyanto
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1791
2021-06-11T10:41:05Z
SK:ART
Peningkatan Akurasi Sensor GY-521 MPU-6050 dengan Metode Koreksi Faktor Drift
Peningkatan Akurasi Sensor GY-521 MPU-6050 dengan Metode Koreksi Faktor Drift
Mangkusasmito, Fakhruddin
Tadeus, Dista Yoel
Winarno, Heru
Winarno, Eko
GY-521 MPU-6050 Module is a core module MPU-6050, which is a 6 axis Motion Processing Unit. This sensor can be categorized as an Inertial Measurement Unit (IMU) sensor, which utilizes measurement systems such as gyroscopes and accelerometers to estimate the relative position, velocity, and acceleration of an object. A common accuracy problem in using IMU sensors, including the GY-521 MPU-6050, is the drifting phenomenon. This phenomenon results in a deviation between the actual conditions (position, angular velocity) and the sensor readings. Drift is caused by the accumulation of errors that arise from calculating the integral of the acceleration. This study proposes a drift error correction method at the sensor output using the calibration of the calculation of the average offset error sensor and the sensor fusion method between the information obtained from the gyroscope and accelerometer in the module, the tests were carried out using the Arduino Uno microcontroller. From the test results, it is found that the combination of the initial system calibration implementation and the use of the fusion sensor concept can provide better performance with the MSE analysis results for the roll position of 0.0029o and the pitch position of 0.0047o and the drifting error rate at the yaw angle position of 0 0082o / second or down 62.72%.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2020-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1791
10.31937/sk.v12i2.1791
ULTIMA Computing; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 91-95
Ultima Computing : Jurnal Sistem Komputer; Vol 12 No 2 (2020): Ultima Computing : Jurnal Sistem Komputer; 91-95
2549-4007
2355-3286
10.31937/sk.v12i2
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1791/987
Copyright (c) 2020 Fakhruddin Mangkusasmito, Dista Yoel Tadeus, Heru Winarno, Eko Winarno
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/1856
2021-06-26T15:14:07Z
SK:ART
Penerapan Algoritma Hybrid Dalam Menentukan Rute Terpendek Antara Cabang Kampus
Application of Hybrid Algorithm in Determining the Shortest Route Between Campus Branches
Bismi, Waeisul
Gata, Windu
., Anton
Asra, Taufik
Traffic congestion in the capital city is a familiar sight for the citizens of the capital, because two-wheeled vehicle users dominate the streets of the capital city as much as 72.8 percent while four-wheeled vehicle users are 26.5 percent. And congestion has a negative impact on the activities of the various citizens of the capital city, both in terms of work and in education. Therefore, an effective solution for road users in the capital city in overcoming congestion is to find the shortest route to get to the destination quickly. The application of the Djikstra algorithm is a solution in this case by determining the shortest route from the origin to the destination in order to get to the destination faster. Therefore, the researcher conducted a case study on the way to the STMIK Nusa Mandiri Kramat 18 campus as the place of origin to the STMIK Nusa Mandiri Jatiwaringin campus as the goal by trying to apply the Djikstra algorithm as a method of finding the shortest route.
Kemacetan lalu lintas di ibu kota merupakan pemandangan yang tidak asing lagi bagi warga ibu kota, karena pengguna kendaraan roda dua mendominasi ruas jalan ibu kota sebanyak 72,8 persen sedangkan pengguna kendaraan roda empat sebanyak 26,5 persen. Dan kemacetan berdampak negatif terhadap aktivitas berbagai warga Ibu Kota, baik dari segi pekerjaan maupun pendidikan. Oleh karena itu, solusi efektif bagi pengguna jalan di Ibu Kota dalam mengatasi kemacetan adalah dengan mencari rute terpendek untuk sampai ke tujuan dengan cepat. Penerapan algoritma Djikstra merupakan solusi dalam hal ini dengan menentukan rute terpendek dari asal ke tujuan agar bisa sampai ke tujuan lebih cepat. Oleh karena itu, peneliti melakukan studi kasus perjalanan menuju kampus STMIK Nusa Mandiri Kramat 18 sebagai tempat asal menuju kampus STMIK Nusa Mandiri Jatiwaringin dengan tujuan mencoba mengaplikasikan algoritma Djikstra sebagai metode pencarian rute terpendek.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-06-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/1856
10.31937/sk.v13i1.1856
ULTIMA Computing; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 1-9
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 1-9
2549-4007
2355-3286
10.31937/sk.v13i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/1856/1094
Copyright (c) 2021 Waeisul Bismi, Windu Gata, Anton ., Taufik Asra
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2051
2023-07-24T12:21:44Z
SK:ART
Allergen Recognition in Food Ingredients with Computer Vision
Allergen Recognition in Food Ingredients with Computer Vision
Johan, Elisa Belinda
Rizal, Aminuddin
The process of recognition and classification of food is very important. It can be useful for consumers who are sensitive in choosing foods that they want to consume. Considering that some food ingredients are allergens that can cause allergies for some people. This paper aims to design and build an Android-based system to detect food ingredients that can facilitate consumers in getting information about all allergens contained in the. The application is created by implementing Optical Character Recognition (OCR) algorithm and using Boyer Moore algorithm to do the word matching (string matching). The experiments were performed with trial of OCR, Boyer Moore, light sources, and technical words (uncommon words). Our experiment shows more than 90% accuracy obtained with different scenario applied.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2051
10.31937/sk.v13i2.2051
ULTIMA Computing; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 44-49
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 44-49
2549-4007
2355-3286
10.31937/sk.v13i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2051/1194
Copyright (c) 2021 Elisa Belinda Johan, Aminuddin Rizal
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2056
2021-06-26T15:14:07Z
SK:ART
Rancang Bangun Adjustable Power Supply dengan Overload Current Protection Berbasis IC LM723
Rancang Bangun Adjustable Power Supply dengan Overload Current Protection Berbasis IC LM723
Putranto, Ari Bawono
Mangkusasmito, Fakhruddin
Azam, Much.
Muhlisin, Zaenul
Hersaputri, Megarini
The type of power supply that is commonly used is the adjustable power supply. Its ability to generate a varying voltage level, making it suitable for testing a wide variety of electronic circuits. A conventional protection system of this type is usually a fuse, overcurrent event occurred due to improper installation of the components and circuit design will make this protection system is active and needed replacement fuse. To eliminate the need for fuse purchases at the Instrumentation and Electronics Engineering Laboratory, Undip Vocational School, an adjustable power supply was built with an overload current protection based on the LM723 IC for an operating level of 1 ampere. The system was built as non-fuse protection current limiter. This study will describe the stages of the manufacturing and testing system. The test results show that the power supply output is linear with the coefficient of determination = 0.99 and correlation = 0.99. The system can also limit the average maximum working current of 0.95 for several variations of load resistance.
The type of power supply that is commonly used is the adjustable power supply. Its ability to generate a varying voltage level, making it suitable for testing a wide variety of electronic circuits. A conventional protection system of this type is usually a fuse, overcurrent event occurred due to improper installation of the components and circuit design will make this protection system is active and needed replacement fuse. To eliminate the need for fuse purchases at the Instrumentation and Electronics Engineering Laboratory, Undip Vocational School, an adjustable power supply was built with an overload current protection based on the LM723 IC for an operating level of 1 ampere. The system was built as non-fuse protection current limiter. This study will describe the stages of the manufacturing and testing system. The test results show that the power supply output is linear with the coefficient of determination = 0.99 and correlation = 0.99. The system can also limit the average maximum working current of 0.95 for several variations of load resistance.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-06-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2056
10.31937/sk.v13i1.2056
ULTIMA Computing; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 10-16
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 10-16
2549-4007
2355-3286
10.31937/sk.v13i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/2056/1095
Copyright (c) 2021 Ari Bawono Putranto, Fakhruddin Mangkusasmito, Much. Azam, Zaenul Muhlisin, Megarini Hersaputri
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2064
2021-06-27T08:52:18Z
SK:ART
Sistem Pemantauan Dapur Menggunakan Teknologi Hybrid WiFi - Visible Light Communication
Sistem Pemantauan Dapur Menggunakan Teknologi Hybrid WiFi - Visible Light Communication
Darlis, Denny
Hartaman, Aris
Shafira, Afifah
Visible Light Communication (VLC) is a technology that allows the sending of data information through visible light that will be received as a piece of information. In its implementation, a sensor can send information data using VLC in this technological era. One model of data transmission that is widely used in life is to use radio frequency or better known as wireless.In this final project, a transmitter and receiver of data is realized through the transmission of light, this device consists of a lamp as an electrical converter to light, a photodioda as a converter of light to electric, and receiving data. Through the realization of this tool we can know that the transmission of data through light can occur can be used to transmit data. Data transmitted in this final project is the result of three sensor data namely temperature sensors, gas sensors, and fire detection sensors on the transmitter and on the receiver used firebase to monitor data. From the test results produce parameter values such as distance with a maximum distance of the data is accepted either 45cm, 50cm of data is damaged and 55cm of data is not accepted, the variations in angles and distances show that at a distance of 10cm it can receive data well from an angle of 0ᵒ to an angle of 35ᵒ, a distance of 35cm and 40 cm at an angle of 10ᵒ the received data is damaged and at a distance of 45cm and 50cm at a 5ᵒ angle cannot receive data and as well as the sending speed parameters obtained at a baudrate of 2400 bps, 4800 bps and 9600 bps the data sent can be received well.
Visible Light Communication (VLC) merupakan teknologi yang memungkinkan pengiriman suatu data informasi data melalui cahaya tampak yang akan diterima sebagai suatu informasi yang utuh. Dalam implementasinya suatu sensor dapat menirimkan data informasi dengan menggunakan VLC di era teknologi ini. Salah satu model pengiriman data yang banyak digunakan dalam kehidupan adalah dengan menggunakan radio frekuensi atau yang lebih dikenal dengan sebutan wireless. Dalam proyek akhir ini akan direalisasikan pemancar dan penerima data melalui transmisi cahaya. Smart kitchen yang merupakan salah satu teknologi yang memungkinkan suatu perangkat didalamnya memberikan informasi yang dapat dijangkau oleh pemilik rumah.Data yang ditranmisikan dalam proyek akhir ini merupakan hasil data tiga sensor yaitu sensor suhu, sensor gas dengan rentang kadar gas tersebut yaitu ppm<500 dan sensor pendeteksi api dengan variasi jarak dan sudut yang berbeda pada transmitter dan pada receiver digunakan Google firebase untuk melakukan monitoring data. Dari hasil pengujian menghasilkan nilai parameter seperti jarak dengan maksimum jarak data diterima baik 45cm, 50cm data rusak dan 55cm data tidak diterima, pada variasi sudut dan jarak menunjukan bahwa pada jarak 10cm dapat menerima data dengan baik dari sudut 0ᵒ sampai sudut 35ᵒ, jarak 35cm dan 40 cm pada sudut 10ᵒ data yang diterima rusak dan pada jarak 45cm dan 50cm pada sudut 5ᵒ tidak dapat menerima data dan serta parameter kecepatan pengiriman didapatkan pada baudrate 2400 bps, 4800 bps dan 9600 bps data yang dikirimkan dapat diterima dengan baik.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-06-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2064
10.31937/sk.v13i1.2064
ULTIMA Computing; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 39-43
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 39-43
2549-4007
2355-3286
10.31937/sk.v13i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/2064/1099
Copyright (c) 2021 Denny Darlis, Aris Hartaman, Afifah Shafira
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2065
2021-06-26T15:14:07Z
SK:ART
Implementasi Modul Komunikasi LoRa RFM95W Pada Sistem Pemantauan Listrik 3 Fasa Berbasis IoT
Implementasi Modul Komunikasi LoRa RFM95W Pada Sistem Pemantauan Listrik 3 Fasa Berbasis IoT
Nurhadi, Ahmad Adhitya
Darlis, Denny
Murti, Muhammad Ary
The use of electricity for large loads such as buildings and industry is a 3-phase electrical system. The manual activity of recording or monitoring data on electricity usage is considered impractical, so the use of IoT devices can be a solution. However, sending data on IoT devices using wired communication and Wi-Fi is considered less suitable considering that the device will be placed in a panel room that is rarely covered in the network. So that the use of other IoT communications such as LoRa can be an option. Therefore, the design and manufacture of LoRa-based IoT devices was carried out. This is done to expand the scope of IoT devices in carrying out 3-phase kWh meter readings. The device sends data through LoRa communication with test parameters, namely RSSI, SNR and throughput. The device made is an interface between a 3-phase kWh meter with LoRa communication which includes a MAX485 IC, ATMega 2560 microcontroller, and LoRa RFM95W communication module. From the test results, the device can send 3-phase kWh meter data every 3.611 seconds with an average throughput of 957.231 bps. LoRa communication performance used in LOS conditions can reach 300 meters with RSSI -107.625 dBm, SNR -13.063 dB. Meanwhile, in non-LOS conditions the lowest RSSI was -103.338 dBm and the lowest SNR was -8.897 dB.
Penggunaan listrik untuk beban besar seperti gedung dan industri adalah sistem kelistrikan 3 fasa. Kegiatan pencatatan atau pemantauan data penggunaan listrik secara manual dinilai kurang praktis, sehingga penggunaan perangkat IoT dapat menjadi solusinya. Namun pengiriman data pada perangkat IoT dengan menggunakan komunikasi kabel dan Wi-Fi dinilai kurang sesuai mengingat perangkat akan ditempatkan di ruang panel yang jarang tercakup dalam jaringan. Sehingga penggunaan komunikasi IoT lainnya seperti LoRa bisa menjadi pilihan. Oleh karena itu dilakukan perancangan dan pembuatan perangkat IoT berbasis LoRa. Hal tersebut dilakukan untuk memperluas cakupan perangkat IoT dalam melakukan pembacaan kWh meter 3 fasa. Perangkat mengirimkan data melalui komunikasi LoRa dengan parameter uji yaitu RSSI, SNR dan throughput. Perangkat yang dibuat merupakan antarmuka antara kWh meter 3 fasa dengan komunikasi LoRa yang meliputi IC MAX485, mikrokontroler ATMega 2560, dan modul komunikasi LoRa RFM95W. Dari hasil pengujian, perangkat dapat mengirimkan data kWh meter 3 fasa setiap 3.611 detik dengan throughput rata-rata 957.231 bps. Performa komunikasi LoRa yang digunakan pada kondisi LOS dapat mencapai 300 meter dengan RSSI -107.625 dBm, SNR -13.063 dB. Sedangkan pada kondisi non-LOS RSSI terendah sebesar -103.338 dBm dan SNR terendah sebesar -8.897 dB.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-06-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2065
10.31937/sk.v13i1.2065
ULTIMA Computing; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 17-21
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 17-21
2549-4007
2355-3286
10.31937/sk.v13i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/2065/1096
Copyright (c) 2021 Ahmad Adhitya Nurhadi, Denny Darlis, Muhammad Ary Murti
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2088
2021-06-26T15:14:07Z
SK:ART
Perancangan Alat Karakterisasi Dioda dengan ESP32 dan Rangkaian Op-Amp LM358 Berbasis Android
Perancangan Alat Karakterisasi Dioda dengan ESP32 dan Rangkaian Op-Amp LM358 Berbasis Android
Putranto, Ari Bawono
Muhlisin, Zaenul
Lutfiah, Amatul
Mangkusasmito, Fakhruddin
Hersaputri, Megarini
Pada penelitian ini telah berhasil membuat sebuah alat uji karakterisasi bias maju dioda menggunakan ADC dan DAC internal mikrokontroler ESP32. Tegangan keluaran DAC ditambahkan dengan rangkaian penguat op-amp tak membalik LM358 sebesar 2 kali. Sehingga hasil pengujian tegangan keluaran DAC dapat mencapai nilai maksimum 6,3 volt sebagai sumber catu daya DC variabel rangkaian uji karakteristik bias maju dioda. Pengujian karakterisasi bias maju dioda dilakukan melalui antarmuka perangkat smartphone android dengan jaringan WiFi dan diperoleh kurva grafik karakterisasi bias maju yang memiliki nilai dan bentuk hampir sama dengan pengujian secara manual. Pengujian karakterisasi bias maju dioda menggunakan aplikasi ini lebih cepat daripada menggunakan pengukuran secara manual dengan alat ukur multimeter. Berdasarkan pengujian yang dilakukan menggunakan aplikasi smartphone android sebanyak 3 kali diperoleh rata-rata waktu sebesar 30 detik, sedangkan secara manual menggunakan alat ukur diperoleh rata-rata waktu sebesar 657,7 detik.
This research has succeeded in making a diode forward bias characterization test device using the ADC and the internal DAC of the ESP32 microcontroller. The output voltage of the DAC is added by 2 times the LM358 non-reversing op-amp amplifier circuit. So that the test results of the DAC output voltage can reach a maximum value of 6.3 volts as a source of variable DC power supply for the diode forward bias characteristic test circuit. Diode forward bias characterization testing is carried out through the interface of an Android smartphone with a WiFi network and a forward bias characterization curve is obtained which has a value and shape almost the same as the manual test. Testing the diode forward bias characterization using this application is faster than using manual measurements with a multimeter measuring instrument. Based on tests carried out using the Android smartphone application for 3 times, it was obtained an average time of 30 seconds, while manually using a measuring instrument obtained an average time of 657.7 seconds.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-06-11
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2088
10.31937/sk.v13i1.2088
ULTIMA Computing; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 22-29
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 22-29
2549-4007
2355-3286
10.31937/sk.v13i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/2088/1097
Copyright (c) 2021 Ari Bawono Putranto, Zaenul Muhlisin, Amatul Lutfiah, Fakhruddin Mangkusasmito, Megarini Hersaputri
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2103
2023-07-24T12:21:44Z
SK:ART
Modeling and Controlling the Actuator Joint Angle Position on the Robot Arm Base Using Discrete PID Algorithm
Rohman, Machdiar
Saputra, Dede Irawan
DC motor is a motor that is easy to apply. Its application in robotic DC motor control often occurs errors due to the existing load, so that the DC motor becomes inaccurate. The control used is PID (proportional integral differential). This PID control system works by processing calculations based on the control variables Kp, Ki, and Kd to achieve the conditions according to the expected setpoint. To make a DC motor position control device can be controlled with a PID controller. In practice, the variable to be controlled in this research is position control in the form of degrees. With the Arduino Mega controller, the motor driver as a DC motor rotation controller, the DC motor is given feedback in the form of an encoder sensor, the software used is the Arduino IDE. The results showed that PID control can correct errors and transient responses with a time constant value of 1.50 seconds, a rise time of 1.60 seconds, a settling time of 2.30 seconds and a delay time of 1.20 seconds and a peak time of 1.6 seconds and an error value of 0.33% through tuning parameter Kp = 16 Ki = 0.001 Kd = 16.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2103
10.31937/sk.v13i2.2103
ULTIMA Computing; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 50-56
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 50-56
2549-4007
2355-3286
10.31937/sk.v13i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2103/1195
Copyright (c) 2021 Machdiar Rohman, Dede Irawan Saputra
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2108
2021-06-26T15:14:07Z
SK:ART
Emotion Recognition using Convolutional Neural Network in Virtual Meeting Environment
Shabrina, Nabila Husna
Omar, Julando
Bhakti, Akmal Nusa
Patria, Axel
This study is done in order to propose an Emotion Recognition System that uses Convolutional Neural Network in a Virtual Meeting Environment to detect non-verbal feedback that emerge when communicating. This study starts with the training process of the CNN model with version 2.3.0 of tensorflow-gpu library, along with FER-2013 dataset, where only 80% of the data is used as the training set, and the other 20% is used as the test set. The model is trained for 430 epochs that results in 73.86% rate of accuracy with a loss of 1.42. In the classification process, a Haar-Cascade Classifier algorithm is used to detect faces within an image that has been inputted using OpenCV. Next the already developed model is used to predict the image that has been pre-processed. Based on the results shown, it can be concluded that the study has provided satisfactory results and is expected to help in understanding non-verbal input given when communicating and among other various things.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-06-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2108
10.31937/sk.v13i1.2108
ULTIMA Computing; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 30-38
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 1 (2021): Ultima Computing : Jurnal Sistem Komputer; 30-38
2549-4007
2355-3286
10.31937/sk.v13i1
ind
https://ejournals.umn.ac.id/index.php/SK/article/view/2108/1098
Copyright (c) 2021 Nabila Husna Shabrina, JULANDO OMAR, Akmal Nusa Bhakti, Axel Patria
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2109
2023-07-24T12:21:44Z
SK:ART
Hand Gesture Detection for Sign Language using Neural Network with Mediapipe
Hand Gesture Detection for Sign Language using Neural Network with Mediapipe
Alvin, Arsheldy
Shabrina, Nabila Husna
Ryo, Aurelius
Christian, Edgar
The most popular way of interfacing with most computer systems is a mouse and keyboard. Hand gestures are an intuitive and effective touchless way to interact with computer systems. However, hand gesture-based systems have seen low adoption among end-users primarily due to numerous technical hurdles in detecting in-air gestures accurately. This paper presents Hand Gesture Detection for American Sign Language using K-Nearest Neighbor with Mediapipe, a framework developed to bridge this gap. The framework learns to detect gestures from demonstrations, it is customizable by end-users, and enables users to interact in real-time with computers having only RGB cameras, using gestures.
The most popular way of interfacing with most computer systems is a mouse and keyboard. Hand gestures are an intuitive and effective touchless way to interact with computer systems. However, hand gesture-based systems have seen low adoption among end-users primarily due to numerous technical hurdles in detecting in-air gestures accurately. This paper presents Hand Gesture Detection for American Sign Language using K-Nearest Neighbor with Mediapipe, a framework developed to bridge this gap. The framework learns to detect gestures from demonstrations, it is customizable by end-users, and enables users to interact in real-time with computers having only RGB cameras, using gestures.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2109
10.31937/sk.v13i2.2109
ULTIMA Computing; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 57-62
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 57-62
2549-4007
2355-3286
10.31937/sk.v13i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2109/1196
Copyright (c) 2021 Arsheldy Alvin, Nabila Husna Shabrina, Aurelius Ryo, Edgar Christian
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2120
2023-07-24T12:21:44Z
SK:ART
Comparison of FIR Window Filter Variation Results on Pink Noise Audio
Comparison of FIR Window Filter Variation Results on Pink Noise Audio
Christopher, John
Shabrina, Nabila Husna
Cornelia, Cindy
Zakhary, Yoel
IIR and FIR filters are the most used digital signal filters. The application of each filter type depends on the needs of the user. IIR filters are generally used for applications with limited memory. In comparison, FIR filters are usually used for applications where the linear phase is essential. In this study, the implementation of FIR filters on pink noise audio samples was observed. Various FIR window method filters such as rectangular, hamming, hanning, and Blackman will be compared. Each type of filter will have a different filter order due to computing the frequency cut-off point for each filter. The comparisons were made by observing the gain response, the time domain signal, the frequency response, and the phase response. The results indicated that the Hanning window method is a better filter because it produces low delay and good attenuation. Things to be considered in designing FIR filters are fluctuations in frequency response and phase shift. Alterations on cut-off points on the filters and delay usage can be deployed for some improvement
IIR and FIR filters are the most used digital signal filters. The application of each filter type depends on the needs of the user. IIR filters are generally used for applications with limited memory. In comparison, FIR filters are usually used for applications where the linear phase is essential. In this study, the implementation of FIR filters on pink noise audio samples was observed. Various FIR window method filters such as rectangular, hamming, hanning, and Blackman will be compared. Each type of filter will have a different filter order due to computing the frequency cut-off point for each filter. The comparisons were made by observing the gain response, the time domain signal, the frequency response, and the phase response. The results indicated that the Hanning window method is a better filter because it produces low delay and good attenuation. Things to be considered in designing FIR filters are fluctuations in frequency response and phase shift. Alterations on cut-off points on the filters and delay usage can be deployed for some improvement
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-07-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2120
10.31937/sk.v14i1.2120
ULTIMA Computing; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 1-7
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 1-7
2549-4007
2355-3286
10.31937/sk.v14i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2120/1284
Copyright (c) 2022 John Christopher, Nabila Husna Shabrina, Cindy Cornelia, Yoel Zakhary
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2214
2023-07-24T12:21:44Z
SK:ART
Implementation Of Lossy Compression Method For Storage Saving On Fog Computing
Permadi, Rachmat Indra
Kartikasari, Dany Primanita
Bakhtiar, Fariz Andri
Video surveillance is a technology that uses a camera as an image receiver or input and a monitor/TV as an image producer or output to covers in certain areas. In its application, video surveillance monitors an area/place using a camera that has been installed in that place. The camera periodically records the situation that occurs in a place which is then sent to the virtual storage room via the internet network which is then displayed on the monitor/TV. However, video surveillance has a weakness, the data/video generated is so large that the storage space becomes full. Based on the experiments that have been carried out previously, the concept of fog computing is applied which is connected to a CCTV camera installed in a room for 24 hours. From these experiments, the results obtained are quite large recordings of 4 GB. To reduce the use of excessive storage space, resource management is carried out using the lossy compression method. In this study, the concept of fog computing is applied to compress video using the lossy compression method. The lossy compression methods used in this study include; H.263, H.264, and MJPEG. In this study, a video with the H.263 codec was produced which resulted in an average video size of 57,282 KB. While the H.264 and MJPEG codecs produce an average video size of 166,350 KB and 303,555 KB.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2214
10.31937/sk.v13i2.2214
ULTIMA Computing; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 63-69
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 63-69
2549-4007
2355-3286
10.31937/sk.v13i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2214/1197
Copyright (c) 2021 Rachmat Indra Permadi, Dany Primanita Kartikasari, Fariz Andri Bakhtiar
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2261
2023-07-24T12:21:44Z
SK:ART
Automatic Warning System for Weather Station Power Supply
Fairuzen, Mumtazanisa
Rusdinar, Angga
Suratman, Fiky Yosef
Darlis, Denny
Weather observation is one of the important factors in agriculture. Data from weather observations can be used for various things, including to predict future risks due to these weather conditions. An Automatic Weather Station (AWS) is needed to read weather conditions continuously. Some of the devices that will be built for the AWS system are data communication, sensors, and power supply. AWS is usually installed in certain areas where there is no power source. Hence, it takes a power supply system that can stand alone and has a security system that can monitor the components connected to the system in real-time.
This research successfully designed a power supply system for a weather station that is equipped with current and voltage measurement features for its load as well as a warning system feature in case of interference on GSM SIM900-based Weather Station. Based on the results of the study the system using solar cell modules has an efficiency of 14,1% and is supported with the help of batteries that can be recharged through solar energy. Using the INA219 sensor to measure the voltage and load current connected to devices that have an error percentage value of less than 1%, the data is then uploaded to Thingspeak. Testing of warning systems at the Weather Station is conducted using Magnetic reed sensors capable of detecting changes when the separation distance between the sensor and other magnets is more than 3cm.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2261
10.31937/sk.v13i2.2261
ULTIMA Computing; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 70-76
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 70-76
2549-4007
2355-3286
10.31937/sk.v13i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2261/1198
Copyright (c) 2021 Mumtazanisa Fairuzen, Angga Rusdinar, Fiky Yosef Suratman, Denny Darlis
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2263
2023-07-24T12:21:44Z
SK:ART
Steering Control System Design on Electric Car using Remote Control
Furqon, Adri Tamma
Rusdinar, Angga
Fuadi, Azam Zamhuri
Hardiyanto, Martin
Sakiman, Usman
Teleoperation vehicles such as Unmanned Ground Vehicles can be used for surveillance or exploration, including the detection of mines. PT. Pindad plans to develop a vehicle for minesweeping. In this research, a prototype of an unmanned vehicle system was built. The vehicle had a steering system that can be remotely controlled, which allows for more maneuverability. A Proportional Integrated and Derivative control was attached to the system. The PID control has the ability to speed up and generate system responses according to user requirements. The experiment result showed that the system got a rise time response of 1.6 seconds and a steady state error of 0%, and the percentage comparison between the angle given by the remote control and the angle read by the rotary encoder is 97.89 %.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2021-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2263
10.31937/sk.v13i2.2263
ULTIMA Computing; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 77-83
Ultima Computing : Jurnal Sistem Komputer; Vol 13 No 2 (2021): Ultima Computing : Jurnal Sistem Komputer; 77-83
2549-4007
2355-3286
10.31937/sk.v13i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2263/1199
Copyright (c) 2021 Adri Tamma Furqon, Angga Rusdinar, Azam Zamhuri Fuadi, Martin Hardiyanto, Usman Sakiman
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2271
2023-07-24T12:21:44Z
SK:ART
Indoor Positioning System Infrastructure Based on Triangulation Method through Visible Light Communication
Juanda, Apnan
Cahyadi, Willy Anugrah
Rusdinar, Angga
Darlis, Denny
Autonomous mobile robots are widely used in industry to help human’s work, but the concept has a weakness, that is robot still does not know its position in a room so it can not detect whether the robot has been at destination point. The technology commonly used to determine the position of objects is the Global Positioning System (GPS). However, GPS does not detect objects that are indoors. Previous research used Wi-Fi as a reference for designing an indoor positioning system, but the system could not determine the position in detail because Wi-Fi could only detect object zones. Based on these problems, this research will propose the infrastructure prototype design of an indoor positioning system based on Visible Light Communication (VLC). The main focus of this research is designing a VLC transmitter and receiver system, estimating the distance between the receiver and transmitter based on the received signal strength, and estimating the receiver's position using the triangulation method based on a minimum of 3 distance estimates. The estimating distance system get average accuracy is 76.47%. The estimated accuracy of the x-coordinate position has the best accuracy is 77.05% and the y-coordinate estimate has the best accuracy is 86.54%.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-06-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2271
10.31937/sk.v14i1.2271
ULTIMA Computing; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 8-19
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 8-19
2549-4007
2355-3286
10.31937/sk.v14i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2271/1256
Copyright (c) 2022 Apnan Juanda, Willy Anugrah Cahyadi, Angga Rusdinar, Denny Darlis
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2565
2023-07-24T12:21:44Z
SK:ART
The Development of an IoT-based Indoor Air Monitoring System Towards Smart Energy Efficient Classroom
Widjaja, Moeljono
Halim, Dareen Kusuma
Andarini, Rahmi
Indoor air quality has become a crucial issue, specifically during COVID 19 pandemic. The good indoor air quality will lead to occupants’ comfort condition, thus affecting their productivity. Indoor air temperature and relative humidity are two essential components of thermal comfort. This paper presents the development of a temperature and relative humidity monitoring system for the classroom using the Internet of Things (IoT). This system consists of three main components: logger nodes, a gateway logger, and an interconnected cloud server. The logger node (ESP8266 / ESP32 microcontroller and DHT22 sensor) is a device at the edge of the IoT system and is placed at the monitoring location. The logger gateway is built on a Raspberry Pi 4, which serves as an intermediate server. It receives periodic data (temperature and humidity) from the logger nodes through the publish-subscribe MQTT protocol and sends it to the MongoDB Atlas cloud database. The logger gateway saves all received logs into the SQLite database as temporary local storage and then uploads the data to the MongoDB Atlas cloud at a predefined interval. The MongoDB data is then displayed on a monitoring dashboard using MongoDB charts. The logger node with the DHT22 sensor has been adjusted using a linear model and successfully tested to monitor indoor and outdoor air conditions with satisfactory results. The recorded data has also been successfully modeled using the Gaussian Mixture Model and a simple Fuzzy model. These models can capture the dynamic of air condition in the room and predict the state of the cooling system.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-07-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2565
10.31937/sk.v14i1.2565
ULTIMA Computing; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 28-35
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 28-35
2549-4007
2355-3286
10.31937/sk.v14i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2565/1285
Copyright (c) 2022 Moeljono Widjaja, Dareen Kusuma Halim, Rahmi Andarini
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2567
2023-07-24T12:21:44Z
SK:ART
Specification Design and Performances Using Computational Fluid Dynamics for Mini-Remotely Operated Underwater Vehicle
Baital, Muhammad Sawal
Mangkusasmito, Fakhruddin
Rahmawaty, Mitha Asyita
Remotely Operated Underwater Vehicle (ROV) is a submersible robotic system, used to examine various underwater characteristics and controlled by operators from shore. The applications of ROV are widely diverse, especially for exploration and marine industry. This research is to investigate pressure and drag on underwater vehicles using the CFD approach. A low-cost mini ROV with a 300 mm length was used for the research and to determine the hardware and material type required for prototype production by observing pressure and drag from the CFD simulation result. Simulation is solved using CFD software with RANSE method and Shear Stress Transport based k- ɷ was used as turbulence setting. The result indicated that to pull the mini ROV from the surface to a depth of 50 m requires a thrust of 3,9 kg and the mini ROV receiving the pressure of 7,7 bar.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-06-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2567
10.31937/sk.v14i1.2567
ULTIMA Computing; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 20-27
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 20-27
2549-4007
2355-3286
10.31937/sk.v14i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2567/1238
Copyright (c) 2022 Muhammad Sawal Baital, Fakhruddin Mangkusasmito, Mitha Asyita Rahmawaty
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2661
2023-07-24T12:21:44Z
SK:ART
Sensor Design for Building Environment Monitoring System based on Blynk
Saputri, Fahmy Rinanda
Dhaneswari, Sekar Fattima
A green building is a building wherein planning, construction, operation until the maintenance reduces the negative impacts, such as efficient use of energy, water, and other resources, maintaining the excellent quality of the building, and considering the quality of life of occupants. Good environmental damage in the building will affect the health, comfort and, safety of the occupants' lives. Therefore, it takes green buildings concept for buildings where people do activities in a home, an office, a school, a hospital, or a community center. To implement the green building concept, the building needs a monitoring system to monitor the quality of its environment. This research aim is to design sensor systems to monitor the building environment. The parameters monitored are temperature, humidity, illuminance, and noise intensity. The sensor system needs to the integrated with microcontroller and Blynk applications. The sensor system obtains the environment parameter. The accuracy rating for the temperature sensor is 94.41%, the humidity sensor is 93.53%, the light sensor is 91.26%, and the sound sensor is 97.13%. Blynk's warning system can make it easier for users to monitor the environment of a building.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-07-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2661
10.31937/sk.v14i1.2661
ULTIMA Computing; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 36-41
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 36-41
2549-4007
2355-3286
10.31937/sk.v14i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2661/1286
Copyright (c) 2022 Fahmy Rinanda Saputri, Sekar Fattima Dhaneswari
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2696
2023-07-24T12:21:44Z
SK:ART
Preliminary Study on Indonesian Word Recognition for Elder Companion Robot
Nugraha, MB
Tuasikal, Dyah Ayu Anggreini
Iswari, Ni Made Satvika
Fakhrizki, Luthfialmas
Word recognition using deep learning is a simple approach to speech recognition in general. From this word-level recognition, the emotional expression recognition model. The emotion recognition model can be used to describe the important level of action on future planned hardware implementation. This research was conducted using MFCC as the feature extraction method from the audio data and using the CNN-LSTM approach for the emotional expression classifier. The model itself will be implemented into a humanoid robot to become a companion robot for the elderly. The model itself has 67% accuracy for emotion recognition and 97% accuracy for word recognition. However, the model only attained 20% accuracy in real-life testing using the humanoid robot as the model tends to overfitting as a result of the lack of data used in model training.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-07-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2696
10.31937/sk.v14i1.2696
ULTIMA Computing; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 42-47
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 1 (2022): Ultima Computing : Jurnal Sistem Komputer; 42-47
2549-4007
2355-3286
10.31937/sk.v14i1
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2696/1287
Copyright (c) 2022 MB Nugraha, Dyah Ayu Anggreini Tuasikal, Ni Made Satvika Iswari, Luthfialmas Fakhrizki
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2779
2023-07-30T10:02:35Z
SK:ART
Black Hole Detection Using Modified Sequence Number in Vehicular Ad-hoc Network
Julda, Rakha Fikran
Kartikasari, Dany Primanita
Primananda, Rakhmadhany
Vehicular Ad-hoc Network (VANET) is a type of wireless network with Dedicated Short-Range Communication (DSRC) that enables communication between vehicles (V2V) and communication between vehicles to infrastructure around them (V2I). VANET has several security requirements to consider in order to maintain the network functionality. Availability is the most important security requirement due to its responsibility of maintaining the functionality of the network, attack on availability may cause the lack of availability and reduce the efficiency of VANET. One of the attack that threat the availability of VANET is black hole. In this paper, we address the problem of black hole attack in VANET, using Modified Sequence Number (MSN) as a detection method. The simulation is performed using NS-2 as a simulator and AODV as a routing protocol. Detection Rate (DR) and False Alarm Rate (FAR) are used to evaluate the performance of MSN algorithm in detecting black hole attack. Evaluation with variation in the number of CBR packets shows that MSN algorithm successfully detects black hole attacks with DR values reaching 69.0909% at 10 CBR packets and FAR values reaching 0.0037 at 20 CBR packets. We also evaluate the performance of MSN algorithm with variations of node density. The evaluation shows that MSN algorithm successfully detects black hole attack with DR values reaching 100% with a density of 10 and 20 nodes, with the percentage of FAR values reaching 0% in all numbers of node density.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-12-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2779
10.31937/sk.v14i2.2779
ULTIMA Computing; Vol 14 No 2 (2022): Ultima Computing : Jurnal Sistem Komputer; 48-53
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 2 (2022): Ultima Computing : Jurnal Sistem Komputer; 48-53
2549-4007
2355-3286
10.31937/sk.v14i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2779/1311
Copyright (c) 2022 Rakha Fikran Julda, Dany Primanita Kartikasari, Rakhmadhany Primananda
http://creativecommons.org/licenses/by-sa/4.0
oai:ojs.pkp.sfu.ca:article/2810
2023-07-30T10:02:35Z
SK:ART
Water Flow & Temperature Control to Increase Extraction Yield of Light-roasted Coffee Beans
Hutagalung, Samuel
Using light-roasted coffee beans for brewing espresso poses a general problem for pump-based espresso machines. Soluble in light-roasted coffee beans is more challenging to extract and requires a higher EY percentage because it has a relatively higher acidity level than dark-roasted coffee beans. The extraction range of 18% - 22% in light-roasted coffee beans for espresso brewing with an 8% - 12% TDS is qualitatively considered insufficient to produce espresso with a balanced taste. To improve the extraction ability of the espresso machine on coffee soluble. We design two features that hypothetically can solve the problem: Temperature Control Module to increase water temperature stability as a replacement for the thermostat, and Flow Control Module to regulate the speed of the vibration pump by adjusting the voltage resistance to reduce the water pressure/ flow rate used during the initial extraction at the preinfusion phase. Based on the results of trials using an espresso machine that has added temperature and flow control modules, there is an increase in the average percentage of extraction compared to the results of trials using stock machines; the average extraction percentage increased by 4.83 points. Qualitatively, this increase of %EY also significantly impacts the espresso taste, which tasted very sour and unbalanced, became relatively more balanced and comfortable to enjoy.
Faculty of Engineering and Informatics, Universitas Multimedia Nusantara
2022-12-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://ejournals.umn.ac.id/index.php/SK/article/view/2810
10.31937/sk.v14i2.2810
ULTIMA Computing; Vol 14 No 2 (2022): Ultima Computing : Jurnal Sistem Komputer; 54-59
Ultima Computing : Jurnal Sistem Komputer; Vol 14 No 2 (2022): Ultima Computing : Jurnal Sistem Komputer; 54-59
2549-4007
2355-3286
10.31937/sk.v14i2
eng
https://ejournals.umn.ac.id/index.php/SK/article/view/2810/1312
Copyright (c) 2022 Samuel Hutagalung
http://creativecommons.org/licenses/by-sa/4.0
d51e1b64d14871aa248d1b93862a5789