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Jurnal ULTIMA Computing

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Published by Universitas Multimedia Nusantara

ISSN : 23553286 EISSN : 25494007 DOI : -

Core Subject : Science, Engineering,

Computer Science & IT Control & Systems Engineering Engineering

urnal ULTIMA Computing merupakan Jurnal Program Studi Sistem Komputer Universitas Multimedia Nusantara yang menyajikan artikel-artikel penelitian ilmiah dalam bidang Sistem Komputer serta isu-isu teoritis dan praktis yang terkini, mencakup komputasi, organisasi dan arsitektur komputer, programming, embedded system, sistem operasi, jaringan dan internet, integrasi sistem, serta topik lainnya di bidang Sistem Komputer. Jurnal ULTIMA Computing terbit secara berkala dua kali dalam setahun(Juni dan Desember) dan dikelola oleh Program Studi Sistem Komputer Universitas Multimedia Nusantara bekerjasama dengan UMN Press.

Arjuna Subject : -

Articles 157 Documents

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Segmentasi pada Citra Panoramik Gigi dengan Metode Two-Stage SOM dan T-CLUSTER Khoirul Umam; Fidi Wincoko Putro; Gulpi Qorik Oktagalu Pratamasunu
Ultima Computing : Jurnal Sistem Komputer Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

Klasifikasi Artikel Berita Online Sederhana dengan Menggunakan Struktur Kategori Wikipedia William Aprilius
Ultima Computing : Jurnal Sistem Komputer Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

Pengembangan Prototipe Kontemporer Piranti Lunak Akuisisi dan Reduksi Data Terowongan Angin Kecepatan Rendah Indonesia Ivransa Zuhdi Pane
Ultima Computing : Jurnal Sistem Komputer Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

Implementasi Algoritma Squeezer dan Term Frequency Ranking dalam Pembangunan Sistem Rekomendasi Tempat Makan Vincentius Wirawan; Seng Hansun; Hargyo Tri Nugroho I.
Ultima Computing : Jurnal Sistem Komputer Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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.

Implementasi Fuzzy Hashing untuk Signature Malware Aditia Rinaldi
Ultima Computing : Jurnal Sistem Komputer Vol 6 No 1 (2014): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

Implementation of Android Based Speech Recognition for Indonesian Geography Dictionary Hugeng Hugeng; Edbert Hansel
Ultima Computing : Jurnal Sistem Komputer Vol 7 No 2 (2015): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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.

Implementasi Audio Steganografi menggunakan 4th LSB dan Advanced Encryption Standard pada Windows Phone M. Chaeril Maricar; Seng Hansun
Ultima Computing : Jurnal Sistem Komputer Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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.

Analisis Perbandingan Performa Sistem Pakar Zakat menggunakan Algoritma Rule-Based dan Algoritma Rete Berbasis Web Farisi Dharmawan; Hira Meidia
Ultima Computing : Jurnal Sistem Komputer Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

Pengembangan Aplikasi Pendukung Keputusan Pemilihan Program Studi dengan Metode Fuzzy Logic (Studi Kasus: Universitas Multimedia Nusantara) Joko Haryanto; Seng Hansun
Ultima Computing : Jurnal Sistem Komputer Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

Optimasi Pencarian Kata pada Aplikasi Penerjemah Bahasa Mandarin – Indonesia Berbasis Android dengan Algoritma Levenshtein Distance Peggy Peggy; Seng Hansun
Ultima Computing : Jurnal Sistem Komputer Vol 7 No 1 (2015): Ultima Computing : Jurnal Sistem Komputer
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

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

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Contact Name
Ni Made Satvika Iswari

Contact Email
satvika@umn.ac.id

Phone
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Journal Mail Official
ultimacomputing@umn.ac.id

Editorial Address
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Location
Kota tangerang,

Banten

INDONESIA