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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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Program Aplikasi Optimalisasi Perencanaan Produksi dengan Metode Goal Programming (Kasus CV. G) Zahedi, Zahedi; Putera, I Wayan Aditya Eka
ComTech: Computer, Mathematics and Engineering Applications Vol 1, No 1 (2010): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v1i1.2176

Abstract

Indonesia today is still a State agrarian. Thus agriculture in Indonesia always get more attention by the government. Many government programs are rolled out to support the agricultural development of Indonesia, and one of them is the fertilizer subsidy to farmers Indonesia. Fertilizer itself is very useful to nourish the soil and provide vitamins to the plants, thus increasing the amount of production generated. Therefore it is necessary fertilizer for agriculture in Indonesia. CV. G company is one of the companies that produce fertilizer. Fertilizer produced by this company is an organic fertilizer and inorganic fertilizer. Problems faced by these companies are in planning the production of fertilizer produced. Companies want to optimize the amount of production of each fertilizer, maximize revenues, minimize production costs, and simultaneously optimize the working hours of employees. To meet these objectives, this research created program package using goal programming methods. Goal programming method can provide an effective solution / equilibrium toward the goals set, and the calculation will be assisted by using the Simplex method that has been modified. This method is an extension of linear programming, linear programming which can only solve problems with a single goal while the goal programming to solve problems with multiple objectives.
Persepsi Pelanggan terhadap Online Branding pada Website Binus University Meyliana, Meyliana; W., Henry Antonius E.; Santoso, Stephen W.
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.v3i2.2312

Abstract

Implementation of e-marketing or digital marketing help companies compete in the free market. For that, the company needs to obtain information about the customer perception in assessing e-marketing or its digital marketing (website). The research uses digital marketing framework method that consists of several variables, such as attract, engage, retain, learn, relate and online branding in which the hypothesis is tested by correlation analysis and regression analysis. Based on correlation analysis, all the hypotheses of H1 is received (related) and based on regression analysis, all the hypotheses H1 is accepted (effectible).
An Introduction To Digital Cash World Dewi, Lusiana Citra
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.v1i2.2399

Abstract

Digital cash is one of the payment methods that is very easy to use, especially when someone is doing a transaction through the internet. Digital cash has many forms and systems, which are supposed to simplify and make the process of transaction easier. This paper will discuss about the definition of the digital cash itself, the important properties that it has, the problems which occur due to its existence, the examples of some key players who operate the digital cash from all around the world, along with how the digital cash works, and lastly, how the digital cash is put into the practical world. The purpose of this paper is to give a glimpse of view on the functions of the digital cash, the systems or protocols which are needed to implement it, and the problems faced by those who use it. 
Bragg Resonance around the Coast of Hardwall Noviantri, Viska; Rachmawati, Ro?fah Nur
ComTech: Computer, Mathematics and Engineering Applications Vol 7, No 4 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i4.2547

Abstract

Basically, when waves pass an uneven basis, then this wave will be split into transmission and reflection waves. First of all, it will be shown that a sinusoidal seabed can lead to the phenomenon of Bragg resonance. Bragg resonance occurs when the wave-length comes at twice the wave-length of a sinusoidal basis. The method used to obtain approximation solution is a multi-scale asymptotic expansion method. A research on the effect of Bragg resonance on sinusoidal basis had been studied. Sinusoidal basis can reduce the amplitude of the incoming wave so that the amplitude of the wave transmission is quite small. In these researcher, the coast is assumed ideal and can absorb all the energy of the wave transmission. If the beach can reflect waves, this indicates that the existence of sinusoidal basis is more harmful to the coast. This mechanism relies on the distance between the base sinusoidal and beaches. The present research will examined the influence of the base, when there was a beach of hard-wall on the right, which was perfectly capable of reflecting waves. Having regard to the phase difference, from super positioned waves when they hit the beach, so it can determine the safert and the most dangerous distance.
Pengukuran Manajemen Risiko Teknologi Informasi dengan Metode Octtave-S Hendarti, Henny; Maryani, Maryani
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 2 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i2.2336

Abstract

The purpose of this paper is to measure risks to identify company's assets and analyze risks, and to do strategic planning of security protection and minimize risk. Research used case study by reading materials dealing with the OCTAVE-S method. Observation was done directly to the relating parties through an interview, as well as using a questionnaire based on the OCTAVE-S method. The result obtained from this research is risk management of information technology in order to minimize the risks. Based on the findings obtained, it is expected company can identify potential risks and mitigate them efficiently and effectively.
Pengaruh Persepsi Kualitas Layanan Pelanggan dan Sistem Informasi terhadap Kinerja Organisasi Bidang Jasa Zulkarnain, Novan
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.v3i1.2423

Abstract

Performance brings important influence to the company?s competition level to survive in free trade. Many companies started to reorganize the company's strategy to review the company's strategic objectives. Along with the development of science and technology, performance factors cannot be separated from improving service quality and information systems. The studied company is engaged in educational services and located in Tangerang. The research data was obtained through a questionnaire with 81 questions. 30 respondents were obtained by simple random sampling method. The Data from the questionnaire is used to determine the influence of the perception of customer service quality (X1) and information systems(X2) towards the performance of the organization(Y). The dimensional measurement uses SERVQUAL theory, which is tangible, reliability, responsiveness, assurance and empathy. The result shows that the equality of services and information systems in an organization influence its performance.
Evaluasi Pengendalian Intern Terhadap Sistem Akuntansi Pembelian dan Persediaan Bahan Baku Pada PT Fuyindo Multi Perdana Mariani, Vini; Bindari, Yonarsie
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.v1i2.2566

Abstract

Internal control is essential for the operational activities of a company. The author conducted research for internal control of accounting systems and inventory purchases of raw materials. Internal controls for purchasing and inventory of raw materials is essential if companies want to produce a superior product. In this study researchers prepare the field research method by observation and literature study by studying the theories associated with the purchase and supply of raw materials. The results obtained show the important things that can be controlled by the company for operating companies to run well and the management can give a decision based on the reports of evaluation results, it can be suggested that companies should do in the internal control system purchase accounting and inventory of raw materials. 
Education Game of Multiplying Based on Horizontal Method of HTML 5 and Android Ricky, Michael Yoseph
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.v6i3.2233

Abstract

Over the years, technology is growing rapidly followed by the development of game and its variations. Now, game is easily found on a mobile device. Moreover, game on mobile device can also be used as an excellent medium for learning or often referred as educational game because the nature of educational game is practical, easy to carry anywhere, and tends to be fun. This research was to create a mobile game application for learning with Horizontal method based on HTML 5 and Phonegap and to introduce the method as a method of mathematical multiplication process. This research used the Scrum method for program development. The results obtained showed that the game in this study is considered attractive and received a positive response from the player. Player also found it helpful to know the patterns of mathematics through the multiplication ofnumbers in this game. So through this game the player can perform mathematical multiplication calculations quickly.
Data Warehouse, Data Mining Dan Konsep Cross-Selling Pada Analisis Penjualan Produk Miranda, Eka; Elfreida, Natalya
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.v1i2.2368

Abstract

This paper is about designing and implementing data warehousing and data mining, along with their roles in supporting decision-making related to sales product analysis in cross-selling concept of PT XYZ. The database the company used is not supporting data analysis and decision-making. Therefore, it made a data warehousing design that could be used to keep data in a huge amount and could give report and answer from user?s questions in ad hoc. The method is used to design and implement data warehousing and data mining which consists of literature study, company problem analysis, and data warehousing design, and testing result. The writing results are a data warehousing design and data mining and also the implementation of cross-selling concept to analysis the sales, purchases, and customers? cancellation data. The data could be showed and analyzed from some point of views that could help managers to analyse and acknowledge more information. 
Pengembangan Basis Data Penjualan, Persediaan dan Logistic Tracking: Studi Kasus PT Abhimata Citra Abadi Ayuliana, Ayuliana; Putri, Nadya Permata; Pranoto, Araminta; Novembry, Ronald
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.v3i1.2459

Abstract

This study aims at designing a database system processes sales, inventory, and goods tracking in accordance with the needs of PT Citra Abadi Abhimata, as well as building the application program. This system records each process in a flow of goods, ranging from the entry of the principal goods until the goods are sold to end customers plus goods tracking. This study uses the fact finding method carried out by a direct field study at the company concerned, interviews with relevant parties, studying the company?s documentation, and literary study of textbooks. Furthermore, database design uses the three design concepts (conceptual design, logical design and physical design), as well as the interface design to create the application program. The result obtained is a data base system and application that can improve the company?s performance since data is stored on a regular basis so that it can be easily obtained when needed. The existence of this database design, along with related application, makes the company easier to manage data and monitor the process of goods flow and produce better work.

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