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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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Analisis dan Perancangan Aplikasi Berbasis Web E-Procurement di PT Pillar Utama Contrindo Kurniali, Sartika; Rudy, Rudy; Wijoyo, Alex Chandra; Ferdianto, Ferdianto; Wendy, Wendy
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 2 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i2.2314

Abstract

The aim of this research is to analyze the current business process at the procurement department at PT Pillar Utama Contrindo as well as develop a web based e-procurement application prototype to supportprocurement process at the company. Interview, survey, as well as analysis and design to develop the prototype are used in the research. The research results in an e-procurement application prototype built to minimize errors on related document filling, help the company to get best price on their supply, and increase control. It can be concluded from the research that the protoype can be implemented to be a tool for the users to decide the best supplier, obtain the best price, and increase control in buying process at PT Pillar Utama Contrindo.
Rancang Bangun Perangkat Lunak Billing dan Implementasi Voice Over Internet Protocol Honni, Honni
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 2 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i2.2483

Abstract

The rapidly evolving communication system enables applications for telephone communication to be carried over the data network known as VoIP (voice over internet protocol). SIP (session initiation protocol) as the signaling protocol is text-based VoIP which can be implemented easily in comparison with other signalingprotocols. The purpose of this paper is designing and implementing VoIP billing up to the company to provide additional facilities for enterprise customers. The methods start with data collection, analysis, design, development, and implementation. The result achieved is a system of VoIP with SIP and Asterisk software which has functions of PBX to provide additional facilities such as VoIP which is a plus for the company and customers. After implemented, the VoIP system and billing features are found work well.
Pengukuran Kinerja Efektif Departemen Pengembangan Sistem Informasi dengan Metode Balanced Scorecard pada PT. Xyz Suryani, Eli; Fadli, Muhammad
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 1 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i1.2736

Abstract

Department of Information System Development at PT XYZ becomes a trigger in the movement of the Information Technology Development of the company.  However it is not merely the fastest, the biggest or the most completed project that determine the success, but the most important is to align with the business strategy due to achieve the company’s goal and objective. Recognizing the performance does not only need a measurement system but also right measurements. The purpose of the study is to design an effective Key Performance Indicator in Departement of Information System Development that is aligned with current indicators to measure the success of company’s strategy execution. The choosen indicators are cascaded from company’s strategy map and information technology strategy map. The design uses balanced scorecard method according to data and information collected from executive interview, focus group discussion and workshop with the key persons in IT organization. Balanced scorecard method provides the integration of financial and non-fianncial factor for measurements. It allows different level formulation with same performance indicator flexibly. Recently, Department of Information System Development can monitor and develop its performance directionally. 
Perancangan Enkripsi Pada Citra Bitmap Dengan Algoritma Des, Triple Des, dan Idea Yosanny, Agustinna
ComTech: Computer, Mathematics and Engineering Applications Vol 1, No 2 (2010): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v1i2.2618

Abstract

Rapid development of Information Technology causes information can access easier without space boundaries. Image is a form of information, which contains many information. Some image contains confidential information that cannot distribute to unauthorized persons. Therefore, image encryption application is create to encrypt part of image that has confidential information. The image encryption application is encrypt image by applying DES, Triple DES, and IDEA algorithms. The research was applying analysis and design methodology. The analysis methodology was undertaken through literature study and algorithm research and testing. The design methodology was undertaken through database, features, system, and screen layout design. Results of the research are image encryption application that can encrypt part of image and or all of image by applying three algorithms such as DES, Triple DES, and IDEA. This application is show comparation of these algorithms. In conclusion, method of encryption can apply to image, so that confidential information of the image can protect from unauthorized person. 
Usage Of Asp.Net Ajax for Binus School Serpong Web Applications Iskandar, Karto; Putranto, Andrew Thejo
ComTech: Computer, Mathematics and Engineering Applications Vol 7, No 1 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i1.2212

Abstract

Today web applications have become a necessity and many companies use them as a communication tool to keep in touch with their customers. The usage of Web Application in current time increases as the numberof internet users has been rised. For reason of Rich Internet Application, the desktop application developer wasmoved to web application developer with AJAX technology. BINUS School Serpong is a Cambridge Curriculum base International School that uses web application for access every information about the school. By usingAJAX, performance of web application should be improved and the bandwidth usage is decreased. Problems thatoccur at BINUS School Serpong is not all part of the web application that uses AJAX. This paper introducesusage of AJAX in ASP.NET with C# programming language in web application BINUS School Serpong. It is expected by using ASP.NET AJAX, BINUS School Serpong website performance will be faster because of reducing web page reload. The methodology used in this paper is literature study. Results from this study are to prove that the ASP.NET AJAX can be used easily and improve BINUS School Serpong website performance. Conclusion of this paper is the implementation of ASP.NET AJAX improves performance of web application in BINUS School Serpong.
Penerapan Teori Motivasi dalam Perancangan Aplikasi Edutainment Soegandi, Andreas; Halim, Adriani
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 2 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i2.2935

Abstract

The purpose of this study was to develop an edutainment application which engages user’s interest like a game application does. The application development implemented motivation theory by Malone and Lepper. The result of this study showed that implementing Malone and Lepper’s motivation theory on edutainment application concerning global warming gives positive result in engaging user’s interest. This application is expected to enhance user’s awareness about global warming. 
Pengendalian Intern Terhadap Sistem Pengawasan Produksi Dan Sistem Biaya (Studi Kasus PT. XYZ) Julisar, Julisar
ComTech: Computer, Mathematics and Engineering Applications Vol 1, No 2 (2010): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v1i2.2347

Abstract

Business use internal control to guide their operations, safeguard assets and prevent abuses their system. Management is responsible for designing and applying five elements of internal control. The results from the evaluation of Internal Control in Production Control System and Cost System are the company has a good enough internal control in both their systems, such as, implement the segregation of duties, effective and efficiency in their manual operation procedure, controlling their documents and assets. But one thing the company needs to be done is the using of pre-numbered form. Most of all their forms have not been a pre-numbered form.
Perbandingan Metode Konstruksi Plat Lantai Sistem Double Wire Mesh Dengan Sistem Half Slab Tedja, Michael; Prisilla, Anastasia; Carolina, Carolina; Wiharyanto, Dimas E. J.; Susiyo, Johnsen
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 2 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i2.2527

Abstract

Floor plate is a structure on two-story buildings or more. Like other structures, floor plate also develops over time. Demands a shorter time jobs at a cheaper cost are some reasons for structures development of house construction. Floor plate can be constructed with two different way: conventional which uses double wire meshand modern uses half slab. The purpose of this study is to determine which floor plate construction methods of double wire mesh and half slab is more efficient in terms of cost and time. The study is conducted using survey, comparative analysis and literature study. The results of this study indicate that both methods have advantages and disadvantages. Double wire mesh method takes cheaper construction costs while half slab method takes faster construction time.
Pembangunan Sistem Knowledge Repository Manajemen Penyuluhan Pertanian dalam Rangka Mendukung Revitalisasi Penyuluhan Pertanian: Help Desk Penyuluhan Pertanian Komoditas Tanaman Pangan Harisno, Harisno; Jingga, Freddy
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 1 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i1.2768

Abstract

Development of knowledge Repository Management System for Agricultural Extension aims to help the extension worker function for at least in three things: technology transfer, facilitation and advisory to farmers as the main actors of agribusiness. To support these functions, the extension workers need to master as well as utilize information and communication technology. A help Desk of Agricultural Extension System is developed using PC with PHP programming language. Data management in the Database of Agricultural Extension Knowledge Repository is managed by using MySQL. The web-based application will enable users to access data, information and agricultural extension knowledge based on needs. Help Desk of Agricultural Extension System is a knowledge repository that can be used to help the agricultural extension in disseminating agricultural technology packages from the on-farm upstream to the downstream sub-system, and can be used as a medium of communication forums about problems of actual agricultural practices. 
Editorial Page and Table of Content Manik, Ngarap Imanuel
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 2 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i2.3277

Abstract

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