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ComTech: Computer, Mathematics and Engineering Applications
ISSN : 20871244     EISSN : 2476907X     DOI : -
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.
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Articles 52 Documents
Search results for , issue "Vol. 4 No. 1 (2013): ComTech" : 52 Documents clear
Model Terintegrasi Penjadwalan Batch dan Pm dengan Kriteria Minimalisasi Biaya Simpan, Setup dan Pm pada Mesin dengan Increasing Failure Rate Zahedi Zahedi
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.v4i1.2690

Abstract

Development of today's manufacturing systems leads to the getting shorter in product life cycle, more variety of products, as well as increasing in consumer demand for quality and timeliness. Thus the accuracy and speed of decision-making within the manufacturing system becomes important. This paper proposes an integrated model of batch scheduling and preventive maintenance scheduling, in assumption no non-conforming parts to the criteria of minimizing the total saving cost, setup cost, preventive maintenance cost in minimizing the actual flow time on a machine with increasing failure rate. An example is provided to show how the model and algorithm work.
Perancangan Model Sistem Informasi Penunjang Operasional pada Lembaga Bimbingan Belajar Tanty Oktavia
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.v4i1.2691

Abstract

 Tutoring institution is an organization which focuses in education. The objective of this institution is improving the quality of learning of all students to achieve the desired target. The operational activities of this institution consist of registration, scheduling, evaluation, and administration supporters. It will be less effective if the processes are done manually. Therefore, many institutions are starting to restructure the model of information systems to support the company’s operations. This study describes about designing an information system model using object oriented approach based on the methodology introduced by Satzinger, where each phase is represented by using UML diagrams. The result achieved in this research is to produce a general model of information systems in supporting the operations of a tutoring institution. Designing an information system that is compatible with business processes can maximize the company's operations to run efficiently and effectively so as provides a competitive advantage from its competitors.
Rancang Bangun dan Basis Data pada Klinik 24 Jam Secara Konseptual dan Logikal Wihendro Wihendro; Indrajani Indrajani; Safan Capri
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.v4i1.2693

Abstract

The aim of this research is to design a database model which is conceptual and logical for a 24-hour clinic. The methods used in this research are the data collection through literature studies, surveys, and interviews to the clinic management to get a description of the business processes implemented at a 24-hour clinic. Then we use the conceptual database design method which identifies important entities, relationships entities, and existing attributes. After that, we create a database logical model which represents the clinical database 24 hours. From that, the model is expected to be a logical database model for further development into a clinical application 24 hours to improve the health services to the public.
Evaluasi Knowledge Management System di Kompas Gramedia Menggunakan Analisis Faktor Desi Maya Kristin; Wahyu Sardjono
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.v4i1.2695

Abstract

Evaluation of Knowledge Management System (KMS) is performed to determine the state of KM Portal and provide suggestions to improve the benefits and usability for employee and the company. The evaluation analysis of KMS uses factor analysis to determine the factors that influence user awareness in using KM Portal of Kompas Gramedia. The analysis shows three factors: the quality of KM Portal and user support; user participation; processes and procedures. All factors produced a model that can be used for the control of KM Portal. In accordance with the data processing, the current state of KM Portal is enough. This situation has not yet met the standards that company desires so the company needs further development to obtain a perfect score. 
Analisis dan Perancangan Sistem Informasi Penjualan dan Persediaan pada PT. Xyz Devyano Luhukay; Yohannes Kurniawan; Titan Titan
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.v4i1.2696

Abstract

Based on an analysis conducted, PT XYZ may face problems on their business process since it is still executed with a non-computerized system. The purpose of this study is to improve the effectiveness and efficiency of the business processes perFormance running at the company. Besides, this study may support PT XYZ to monitor their business activities primarily from sales and inventory. The focus of the analysis and design of the inFormation systems lies in the records of beef suppies and sales transaction. A procedure and design of an integrated inFormation system in the Form a desktop application is the output of this study. 
Model System Dynamics Infrastruktur BTS Ramah Lingkungan Daerah Rural untuk Optimalisasi Perhitungan ARPU Wahyu Sardjono
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.v4i1.2699

Abstract

Green Base transceiver station (BTS) or known as remote BTS is a special BTS with IP technology-based that has a small capacity and takes low power consumption with standard features suitable for use in rural areas. BTS utilizes 100% solar energy as a source of energy. The infrastructure Green BTS is composed of high-tech devices which is able to save energy, environmentally friendly, small and lightweight. The high rate service calls and SMS on green BTS is caused by the absence of competition telecom operators at a site. The solution to this  problem needs to be done with system dynamics modeling approach with the aim to establish causality (cause and effect) between the variables. The standard target of model pattern which has been changed on system dynamics can be used to demonstrate the behavior of the model between the number of subscribers, the availability of network capacity and ARPU (average revenue per user) on the Green BTS site. On the changed standard target model, the actual revenue is placed as the actual event, the target revenue is as a target; the difference between the actual and target revenue is as gap, gap changes are as the pressure on the target and the corrective action taken against revenue as a corrective action. Based on simulation results, the standard model change targets can be developed by adding two negative loops (balancing loop) as an alternative solution towards the achievement of revenue targets that have been set.
Analisis Sistem Informasi Pelayanan Jasa In-House Training pada PT. Sigma Global Internasional Jakarta Agus Hamdi
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.v4i1.2701

Abstract

One key to success is the company's strategy to improve performance in information systems that are reliable. Effective information is expected to help companies to do things related to the mechanism of decision-making quality, efficient management process, as well as effective communication and collaboration culture. PT Sigma Global International Jakarta is a private training and consulting services nationwide that provides consulting services in the aspects of customer satisfaction and do sales through creative and innovative work of all competent employees. To see and resolve the weaknesses that occur in the system in-house training services PT Sigma Global International Jakarta needs evaluation and analysis. 
Simulasi Penghitungan Online Kredit Pemilikan Rumah Bank Xyz Berbasis Web di Portal Finansial www.kontan.co.id Albert V. Dian Sano
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.v4i1.2702

Abstract

The objective of this study is to develop an online application of mortgage loan simulation. This application is developed based on a web application in order to be accessible anywhere and anytime. This application is expected to help prospective property’s consumers calculate their financial plans related to decisions concerning the amount of down payment, loan term, and the mortgage system model to be selected. There are two models of mortgage in this application. The first is a fixed and cap rate of interest, with the first three years of the mortgage interest rate of 9.75%, the fourth and fifth year interest of 10%, and the sixth year onwards using a rate cap interest with the indication of 12%. The second model is a 2-year fixed rate mortgage with the first two years rate of 8.5% and the third year onwards using adjustable rate mortgage of interest with the indication of 12%. Calculation formula and the interest rates in this application are obtained from Bank XYZ which is in turn applied in collaboration with financial portal www.kontan.co.id. This application has been tested by over 1000 users and the results are well proven and valid.
Perancangan Data Warehouse dan Penerapan Teknik Clustering Spatial pada Wesel: Studi Kasus PT XXX Arief Dwi Hartadi; Oktalia Juwita
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.v4i1.2704

Abstract

By setting up the right service and product for the customer, the company may increase its marketing effectiveness as well as sales. For that purpose, information on company’s product and sales is highly needed in order to help on decision making process, which expectedly enables company to create value and eventually gain competitive advantage. This research attempts to develop a Data warehouse for PT XXX, which is expected to exhibit useful information for the company without disturbing its operational system. The Data warehouse is developed with Oracle 11g. Apart from that, this research also aims to gather information and knowledge with spatial database. The data mining is conducted by using WEKA application, which compares the algorithm of DBSCAN, K-Means, and EM clustering. Data mining from the spatial data is expected to create area map which indicates sales rate of PT Pos Indonesia’s products. Through this it is hoped that the company may focus more in marketing certain product with particular advantage in one particular area to produce effectiveness. The research outcome indicates that the Data warehouse being developed has already managed to exhibit the receipt report of postal money order (wesel pos), retail stock, as well as retail sales. 
Pembuatan Sistem Informasi dengan Analisis dan Perancangan Berorientasi Objek Dewan Pelawi
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.v4i1.2711

Abstract

To generate an information system which is in accordance with the needs of company requires an analysis of business processes by observing the running system. Solutions for problems found when doing the business are observed using the systems approach. Object-oriented analysis and design is a method currently used to build an information system. The system development with "Object Oriented Analysis & Design (OOAD)" method stated by Satzinger includes making activity diagram, event table, class diagram, usecase diagrams, usecase description, state chart diagram, deployment and software architecture, first-cut design class diagram, simple sequence diagram (SSD), the sequence diagram (first-cut, view layer, data access layer), communication diagram, updated design class diagram, package diagram, persistent object, user interface. The result obtained after performing all phases is an information system that fits the company needs which is expected to improve the performance and effectiveness in business processes and also support the company's business goals.

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