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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 Proses Bisnis dan Penerapan Manajemen Strategis pada PT Optik XYZ Alianto, Hendra
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.v2i2.2841

Abstract

That optic business is increasingly mushrooming followed by a decrease in market share, forces Optik XYZ to have competent management strategies to achieve a strong position in competing in similar industry. Therefore a study was conducted to provide a structured and systematic analysis of management strategies required by Optik XYZ. Stages of study were initiated by data collection from interviews, literature studies and field studies, followed by qualitative and quantitative analysis and implementation of management strategies. The study generated a formulation of management strategy proper for Optik XYZ. Management strategies formulated in this study can help carrying out the company's activities in decision making, so that the business processes run optimally. 
E-Commerce Feasibility Analysis and Strategic Planning to Develop a Small-Medium Enterprise Project in Banking Company Veronica, Veronica
ComTech: Computer, Mathematics and Engineering Applications Vol 9, No 2 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i2.4785

Abstract

The research aimed to identify the problem and the need to develop a small-medium enterprise project in a banking company. The analysis used a literature study, interviews, and observations. The results of the analysis supported the problem and were manifested in the development of information systems in the form of a recommendation for an e-commerce web design. The method consisted of data collection, data analysis and depth interview with Head of E-Commerce Department and Head of Marketing Communication in two days. The result shows that the banking company already uses Bukalapak to enhance their sales and brand. However, based on research, Facebook and Twitter also can be an option to enhance clients’ market access.
Perbandingan Antara C++ dan Java dalam Pengelolaan Sumber Subandijo, Subandijo
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.v3i2.2316

Abstract

This article contains a descriptive comparison of four features between C++ and Java. The first feature discusses about memory management that focuses on exception safety. The second compares the C++ destructor to Java finalizer. Third feature discusses about Java finally block. The forth is about C++ and Java implementation in order to access a data structure.
Pembelajaran Mandiri Aplikasi Enterprise Resource System: Studi Kasus pada Aplikasi SAP – Modul Sales and Distribution Johan, Johan
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.v4i2.2485

Abstract

ERP (enterprise resource planning) is a solution needed by companies to assist the integration of all functional areas. A self-learning media of ERP system is needed for the successful use which is highly depended on the users mastery. The learning media must be flexible to time and place. Therefore, this research creates a self-learning application for ERP system based on a case study on SAP application. SAP is an ERP-based solution widely used by medium to large companies. The method used are data collection, analysis on running business processes and the identification of information needs, followed by the application design. Identificationof system requirements uses Flash CS5 Action Script 3.0. The result achieved in this research is a multimediabased learning tool which assists training for trainers and trainee and facilitates trainee supervision during training. The learning tool is found helpful in self learning process.
Teknik Pengambilan Keputusan Multi Kriteria Menggunakan Metode BAYES, MPE, CPI dan AHP Rangkuti, Abdul Haris
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.v2i1.2738

Abstract

Decision making at every company is something very important and vital. Decision making can be influenced by several aspects, so it can affect the promptness and accuracy of the process, especially when solving any complex, dynamic and less structured problems. Therefore, the combination of multiple criteria concept and an application program of decision-support system is an effective way to generate alternative decisions. The methods used for multiple criteria are: Bayes method, MPE, CPI and the AHP. This article discusses the use of each method, adapted to each problem. The four methods happen to be very effective with the help of the application program of decision support system. Expectantly these methods are able to assist company managements in decision-making. 
Optimisasi Economic Dispatch dengan Transmission Loss Menggunakan Metode Extended Lagrange Multiplier dan Gaussian Particle Swarm Optimization (Gpso) Komsiyah, Siti
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 1 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i1.2620

Abstract

In the operating process of electrical energy, economic planning is the main goal to be achieved. The goal of economic dispatch problem is determining the combination of optimal power distribution to a number of operating generator units so that the electricity demand in a certain area is fulfilled without ignoring the constraints that exist, so it is obtained a minimum total generation cost. Optimization method that is used is the Gaussian Particle Swarm Optimization (GPSO), while for the validation of the results, the obtained solution with the GPSO will be compared with the solution obtained by mathematical methods Extended Lagrange Multiplier (ELM) or the Lagrange multiplier method which its functions are expanded. The solution that is calculated is generation output in Megawatt of 23 thermal generating units system in Mahakam, East Kalimantan, which had a total cost of optimal generating (minimum).
Survey Instrument Development for Consumer Perception Testing to RTE Product in Convenience Store Widaningrum, Dyah Lestari; Amrinola, Wiwit; Nasution, Fuadi
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 3 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i3.2214

Abstract

Global trade and the abolition of trade barriers lead to the proliferation of imported food products such as various types of fast food products (RTE: ready-to-eat food) sold by convenience stores mainly scattered in Jakarta. The question is what causes consumers choose certain convenience store to buy RTE Product and not choose another outlet category. To understand consumer perceptions, it is necessary to develop an instrument for measuring consumer perceptions of the option to purchase RTE Product at convenience stores. Variables used in this research are the perception and knowledge of the public/consumers against food safety, store attributes, service, and product attributes. The instrument used in this study is a questionnaire with a scalemeasuring1-5 to see the relationship between variables, we used the method of Structural Equation Modeling (SEM). The sample used in this study was 223 respondents that were divided into five areas in Jakarta, namely Central Jakarta, West Jakarta, South Jakarta, East Jakarta, and North Jakarta. The final outcome of the instrument development process was 25 observed variables, consisting of 4 indicators, which valid and reliable, with T-values for each observed variable is above 2,58, and Construct Reliability values range between 0,76 to 0,853.
Pemodelan Sistem Fuzzy Dengan Menggunakan Matlab Salman, Afan Galih
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.v1i2.2349

Abstract

Fuzzy logic is a method in soft computing category, a method that could process uncertain, inaccurate, and less cost implemented data. Some methods in soft computing category besides fuzzy logic are artificial network nerve, probabilistic reasoning, and evolutionary computing. Fuzzy logic has the ability to develop fuzzy system that is intelligent system in uncertain environment. Some stages in fuzzy system formation process is input and output analysis, determining input and output variable, defining each fuzzy set member function, determining rules based on experience or knowledge of an expert in his field, and implementing fuzzy system. Overall, fuzzy logic uses simple mathematical concept, understandable, detectable uncertain and accurate data. Fuzzy system could create and apply expert experiences directly without exercise process and effort to decode the knowledge into a computer until becoming a modeling system that could be relied on decision making.
Penerapan Metode Ahp untuk Subsistem Pendukung Pemilihan Supplier pada Outhouse Costing Integrated System (Ocis) di Pt Adm Surjandy, Surja; Melva, Melva
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 1 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i1.2638

Abstract

In general automotive development, especially car, PT Astra Daihatsu Motor (ADM) continuously improves quality and service to supply vehicles in Indonesia. To support the improvement of quality and service, PT ADM continues to improve technology-based system to assist in providing vehicle parts of production process requirements. Therefore Purchasing division is very important in this process. Besides, supplier is a very important role in making and supplying parts for the company. PT ADM has a new system used to improve bidding process. Based on the discussion, price was not the only thing significant. There were other things to consider, especially in selecting the right supplier.  Realizing the system does not cover all areas, therefore, it needs Decision Support System with AHP method to filter suppliers. So that, the company will automatically have good supplier. At least, the supplier meets company standard, especially purchasing department. This research concludes that using AHP Method is very effective for filtering supplier so that the company can make sure that only capable supplier or supplier which meets company standard may join the tender to supply the goods or parts. This paper combined AHP Methodology as the first selection using pairwise scoring and Analysis Sensitivity Methodology used to take decision which supplier is in line with project requirements.
Newsboy Problem untuk Menyelesaikan Masalah Inventory Proyek New Model Sudjatmiko, Veronica Mailiani; Ayu, Ketut Gita
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.v4i2.2528

Abstract

Product Quality Division is in charge to do testing and verification of motorcycle prior the order for mass production items needed. The testing is prepared by the testing department which sends the list of items needed to the warehouse to be ordered. 20 - 43% of the items needed for testing are delayed which drives thetesting department to directly order the same parts to ensure the testing is conducted on time. Crucial parts are determined through Pareto analysis and Newsboy Problem inventory model is used as the inventory system. Based on the simulation of new model project using the proposed inventory system, up to 88% of the total cost of part loss in each project can be saved.

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