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ComTech: Computer, Mathematics and Engineering Applications
Published by Universitas Bina Nusantara
ISSN : 20871244     EISSN : 2476907X     DOI : -
Core Subject : Science, Education, Engineering,
Computer Science & IT Engineering Mathematics
The journal invites professionals in the world of education, research, and entrepreneurship to participate in disseminating ideas, concepts, new theories, or science development in the field of Information Systems, Architecture, Civil Engineering, Computer Engineering, Industrial Engineering, Food Technology, Computer Science, Mathematics, and Statistics through this scientific journal.
Arjuna Subject : -
Articles 1,585 Documents
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Aplikasi RPG Berbasiskan Teknologi Andengine pada Perangkat Mobile Android Gingerbread Budi Yulianto; Andy Budy Pratama; Hutomo Widjaja
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2460

Abstract

This article presents an application development of a Tactical Role-Playing Game based on AndEngine on an Android Gingerbread mobile device. The goals of the research are designing an entertaining application that implements artificial intelligence and AndEngine technology as well as presenting Indonesian cultures. The output of the research is a 2-dimension-based Tactical Role-Playing Game application implemented on Android Gingerbread mobile device and a game engine for creating items and skills of the characters for the game. On the application development phase, the research uses literature study, user requirement analysis, and similar game analysis. The research showed that the game application is developed using 2-dimension perception implementing artificial intelligence and AndEngine technology for having interesting control and appearance for users. In addition, it motivates other programmers for developing other game that presents Indonesian cultures, and uses conditional framerate for reducing battery usage on mobile device.
Pengembangan Algoritma Fast Inversion dalam Membentuk Inverted File untuk Text Retrieval dengan Data Skala Besar Derwin Suhartono
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2461

Abstract

The rapid development of information systems generates new needs for indexing and retrieval of various kinds of media. The need for documents in the form of multimedia is increasing currently. Thus, the need to store or retrieve now becomes a primary problem. The multimedia type commonly used is text types, as widely seen as the main option in the search engines like Yahoo, Google or others. Essentially, search does not just want to get results, but also a more efficient process. For the purposes of indexing and retrieval, inverted file is used to provide faster results. However, there will be a problem if the making of an inverted file is related to a large amount of data. This study describes an algorithm called Fast Inversion as the development of base inverted file making method to address the needs related to the amount of data.
Perancangan Program Sistem Pakar Berbasiskan Web untuk Rehabilitasi Medik Penderita Skoliosis Djunaidy Santoso; Vita Megawati
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2462

Abstract

The application program created in this research is a web-based expert system program for medical rehabilitation of patients with scoliosis. The program aims to make consultation between users and the experts. With the expert system method based on components of medical science this application can help achieve thegoal, that is to make easier for people to recognize and prevent the occurrence of scoliosis, as well as to make easier for doctors making conclusions. Bu using this expert system, students can make decisions quickly when there are problems with Scoliosis disease.
Sistem Informasi Geografis (SIG) untuk Zonasi Daerah Bahaya Kerusakan Bangunan Akibat Gempa Bumi: Studi Kasus pada Kota Banda Aceh dan Sekitarnya Edy Irwansyah; Iqbal S.; M. Ikhsan; R. I Made Oka Yoga
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2463

Abstract

This study aims to develop a geographic information system software that has the ability to develop hazard area zoning of building damage due to earthquake, especially in Banda Aceh and the surrounding areas using peak ground acceleration (PGA) value approach. Analysis and design methods are implemented in this study. The analytical method consists of two stages, namely seismic data collection period 1973 - 2011 by magnitude more than 5 on the Richter scale and the calculation of earthquake acceleration on bedrock using the attenuation function of Crouse. The design method comprises several structured stages, which are designing: data flow diagram (DFD), entity relationship diagram (ERD), menus, screens, and state transition diagrams (STD). The main conclusions of this study is that a GIS -based local zoning of earthquake hazard risk can be built and developed with calculation and classification approach of the peak ground acceleration (PGA). In addition, there is a relationship significant spatial found by comparing the results with the zoning patterns of building damage in the earthquake of 2004.
Perancangan Sistem Informasi Akademis Perguruan Tinggi\ Menggunakan Diagram Use Case dan Rich Picture Karto Iskandar
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2464

Abstract

This research is a continuation of previous research, which is a development of academic information systems for higher education with database reporting of EPSBED to DIKTI. Researchers will continue to develop the design using use case diagrams and rich picture diagrams. The design is useful to help the team of developers in building the application especially in coding process. The method used is studying the results of previous research then developing the design of use case diagrams and finally making the rich picture diagrams. The results of this research is a process design of a university in use case diagrams and rich picture diagrams. This research found that an academic information systems can be designed with use case diagrams and rich picture diagrams to facilitate coding process. This design is expected to be developed into a ready-use application that can be utilized in universities.
E-Commerce untuk Mendukung Business to Business Menggunakan Dynamic Dbmss: Studi Kasus pada Perusahaan Dagang Cross Tech Mohammad Subekti; Anthoni Tandiono; Fenky Tania; Hendro Wibowo A.
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2465

Abstract

The purpose of this study is to develop an e-commerce that can distribute any information about the products of PD Cross Tech. The e-commerce is supported by dynamic DBMS and can be connected via database reseller server so that it can do information sharing. The distribution is performed using the Distributed Relational Database Management System (DRDBMS), supported by the File Transfer Protocol and Virtual Private Network. In other words the e-Commerce supports multiplatform database. Research methodologies used are analytical methods, design methods, and literature study. Results showed that PD Cross Tech needs a new e-Commerce that supports multiplatform database. With this e-Commerce, it is expected that similar computer equipment needs for many organization in Indonesia can be designed in the same way.
Perancangan Aplikasi Monitoring Produksi pada Perusahaan yang Memproduksi Acrylic Nilo Legowo; I Made Kresna Yoga
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2466

Abstract

A lot of problems often occur in production monitoring, because companies still rely on manual processing system. Therefore, this research is objected to facilitate the monitoring of production processes, to minimize human error in the production process, to make automatic the process of existing transactions, toclarify the duties of production monitoring of an acrylic manufacturer. The research methodology used is literature study by reviewing previous theories and studies related to the topic. Furthermore, analysis method by studying the running system of the company as well as evaluating the distributed questionnaire and analyzing the results. And finally is the design method using the Object-Oriented with UML. The research resulted in an application design of a production monitoring system. The result of this design has been implemented into the selected DBMS. The new monitoring system helps monitoring the production system properly, as well as makes the transaction run systematically. The each production process starting from project orders, sample orders, sales orders, material releases, production, assembly, and delivery order within can be monitored quickly and properly. The activity reports can also be generated more systematically and comprehensibly.
Kombinator-Y untuk Melakukan Memoizing Fungsi Rekursif Subandijo Subandijo
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2468

Abstract

This article discusses how to find a solution of a recursive function such as Fibonacci or factorial numbers without repetition. Therefore, a recursive function is considered a fixed-point of non-recursive function. To calculate the fixed-point, we can use Y Combinator, a non-recursive functions to perform memoizing recursive function. This method can significantly reduce the execution time of recursive functions.
Implementasi dan Evaluasi Penerapan Globus Toolkit untuk Aplikasi Grid Computing Widodo Budiharto
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2469

Abstract

Grid computing is a distributed computing technology that utilizes resources connected through a free computer network, yet coordinated with a specific mechanism. The development of grid computing infrastructure is not easy because it takes skill and experience in the installation and configuration of both Linux-based and open source program. In this study, the author built a grid computing infrastructure based on Debian 4, and used Globus Toolkit 4.1.2 on three computers. The WSRF technology was tried to run as an indication that the grid infrastructure has been successfully built. Based on some experiments in this study, grid computing can run well on the three computers with a user interface of web-based grid system using the UCLA Grid Portal. Overall the system runs fine, but it requires high experiences and comprehensions upon the Linux operating systems as well as computer networks in the installation process.
Perbandingan Koefisien NMF dan Proyeksi Bilinear Space Sebagai Fitur pada Pengenalan Ekspresi Wajah Manusia William Salim
ComTech: Computer, Mathematics and Engineering Applications Vol. 3 No. 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2470

Abstract

NMF is one new developed method to make the part-based representation of non-negative data, such as human face image. NMF can reduce the dimension of high dimensional data such as multimedia data. In many researches,NMF can also used as a classification technique done by utilizing the extracted feature through NMF process. This article discusses about the classification technique of human face expression using NMF. This is done using NMF coeffisient and bilinear projection of face image. Some researches show the use of NMF coefficient in classification and some others use bilinear space projection. This research is conducted by simulating face espression recognition to the two available approaches and then comparing the accuracy and time efficiency aspect of the two methods. Through this research, it can be concluded that the use of NMF coefficient results in better accuracy compared to bilinear space projection, but bilinear space projection obtains better time efficiency.

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