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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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Simulasi Penggunaan Ipv6 Pada PD. Pumas Jaya Menggunakan Metode Manual Tunneling Elidjen Elidjen; Shellyana Tanun; Budi Santoso; Cipto Citronegoro
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.v1i2.2571

Abstract

Internet usage trends with IPv4 addresses that only have 32-bit addresses could no longer cope with the large allocation of the required addresses. Internet Engineering Task Force (IETF) has issued a new standard of Internet protocol called IPv6 to anticipate this problem. PD. Pumas Jaya, which started in 1996 in the field of marine products in particular marinated seafood, such as salted fish, rebon shrimp, cuttlefish, anchovies and other marine products to anticipate the need for this in its network. However, IPv6 can not simply be used to replace IPv4 as the existing network infrastructure with IPv4. This research discussed IPv6 simulation tunneling with manual methods so that an IPv6 site can communicate with other IPv6 site even if separated by an infrastructure that supports only IPv4. 
Model Sistem Informasi Manajemen Sekolah Berbasiskan Notasi Unified Modeling Language Yohannes Kurniawan
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.v4i2.2572

Abstract

Basically the use of integrated information systems can be applied not only for the company, but also education industry, particularly schools. To support business processes at the school, this research would like to describe a conceptual model of information systems using the Unified Modeling Language (UML) notationwith "4 +1 View" architectural model. This model is expected to assist analysis and design the whole business processes at school. A conceptual model of the information system can help application developers to easily and clearly understand the school system. By adopting this information system model, schools are able to have effective understanding of management information systems.
Analisis dan Perancangan Sistem Interactive Voice Response (IVR) Berbasis Openvxi Menggunakan Asterisk Pada Hotel Sahid Jaya Johan Muliadi Kerta; Wike Apryanto Jufri; Alexander Aryo Nugroho; Andreas Kurniawan
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.v1i2.2573

Abstract

The purpose of this study is to provide a deep understanding of technology of IVR (Interactive Voice Recognition) in OpenVXI based network using Asterisk, that help Sahid Jaya hotel to streamline communication with the guests, improving service and employee effectiveness. The methodology used is analysis which is through surveys, observation and interviews with the company and the design method by designing system from the existing needs analysis. The results obtained from this research is Communication System based in IVR OpenVXI can be applied to existing VoIP network, without disrupting the existing network. Some existing services can be supported with this system usage. Conclusions can be drawn is the use of IVR in the network using VoIP technology is the best solution to overcome the problems and needs of the hospitality which one of these is limited information guest cna get that can provided by non-operators and for support service improvement. 
Perancangan Sistem Produksi, Persediaan, dan Pembelian PT. Maju Jaya Mulya Stephanie Surja; Lius Steven Sanjaya
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.v5i1.2574

Abstract

Analysis and design of information system in PT. Maju Jaya Mulya is aimed to identify the organization needs in controlling and managing the data and information of operational transaction. They will be used as a base for developing a new integrated system that can meet company needs and to face the rivalry from the competitors. The activity in analysis and design is focused in production, inventory management and purchasing activities, as the main business of the company. The analysis and design of the company’s needs will be documented by using unified modeling language. With this information system, there is an expectation that this system will ease the company in doing their activity in production, inventory management and purchasing. This system will also minimize the data lost and human error, which is usually caused by the manual process and storage data of transactional data.
ICT Memungkinkan Orang Bekerja dari Rumah: Studi Kasus pada Bank dan Kursus Online Yuliana Lisanti
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.v5i1.2575

Abstract

The Information technology and telecommunications (ICT - Information and Communication Technology) utilization to facilitate the home worker or teleworker has started being implemented in many companies. The study showed that the home worker offers benefits such as offering the flexibility to improve employee’s work-life balance, cost savings from hot desking implementation, which also support the clean desk policy implementation. In addition, the government needs to encourage firms to adopt the work from home concept, as it can helps to facilitate housewives hence they can have additional income, furthermore, the home worker  could help to solve social problems such as traffic congestion in major cities.
Analisa dan Perancangan Jaringan Berbasis VPN Pada PT. Finroll Johan Muliadi Kerta; David Wennoris; Tonny Gunawan; Erny Erny
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.v1i2.2576

Abstract

Along with the development of the company to run operations such as data communication and perform other transactions to relations and vice versa, PT Finroll just uses the public network such as sending email to their partners. Data information is not safe in public because it can be tapped or intercepted by unauthorized person. With the Virtual Private Network (VPN), PT Finroll can do business in secure environment to their partners. The methodologies used in this research are data collection that was started by surveying, interviewing, and analyzing the current network topology, performance and design requirements that support network design. From these results, PT Finroll can increase productivity and performance from competition in their business. In addition, with this research company has a better ability to increase their competitiveness in present and the future. 
Strukturisasi Entity Relationship Diagram dan Data Flow Diagram Berbasis Business Event-Driven Suroto Adi; Desi Maya Kristin
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.v5i1.2577

Abstract

Entity relationship diagram (ERD) and data flow diagram (DFD) modeling are necessary parts in analysis and design of structured information systems in business. Definition of entities in the ERD, the process, and datastore in the DFD have well described in a lot of literatures. However, practically it is not easy to explain how to design ERD and DFD models so that the students well understand the modeling steps, especially in business applications. This study discussed step-by-step systematic approach to ERD and DFD modeling using "business event-driven" approach that is represented by the REA model, through structuring REA-ERD and REA-DFD. From the results we concluded that the logical design of ERD should be done before designing DFD, so that there would be perfect "balancing" between the entities in the ERD and data stores in the DFD. Consequently, the implementation of these steps needed to be tested both qualitatively and quantitatively in advanced researches
Pengujian Kualitas Website Ditinjau dari Perspektif Accessibility, Experience, Marketing dan Technology Diyurman Gea
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.v5i1.2578

Abstract

The purpose of this study was to determine the quality of the websites managed by individuals, companies and governments. The test results would be useful for managers to pay more attention to the quality of the website optimally through several perspectives: accessibility, experience, marketing and technology. The research used samples from 350 websites and the data were divided into seven categories, namely: website managed by SMEs (small and medium), website of universities, website of governments, e-commerce, news websites, website of industrial companies, and website of non-profit organization. We used Nibler as the testing tool to facilitate the assessment process. Data were analyzed using WEKA presented in the form of a decision tree. The results showed that the tested websites had an average value of 4.66 or worse (scale 1-10). The conclusion is that the manager of the website should perform repairs on the data and applications, in particular in the perspective of technology, accessibility and experience.
Prototipe Kompresi Lossless Audio Codec Menggunakan Entropy Encoding Andreas Soegandi
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.v1i2.2579

Abstract

The purpose of this study was to perform lossless compression on the uncompress audio file audio to minimize file size without reducing the quality. The application is developed using the entropy encoding compression method with rice coding technique. For the result, the compression ratio is good enough and easy to be developed because the algorithm is quite simple. 
Perbandingan DTCWT dan NMF pada Face Recognition menggunakan Euclidean Distance David David; Ferdinand Ariandy Luwinda
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.v5i1.2580

Abstract

Dual tree complex wavelet transform (DTCWT) is widely used for representation of face image features. DTCWT is more frequently used than Gabor or Discrete Wavelet Transform (DWT) because it provides good directional selectivity in six different directions. Meanwhile, non-negative matrix factorization (NMF) is also frequently used since it can reduce high dimensional feature into smaller one without losing important features. This research focused on comparison between DTCWT and NMF as feature extraction and Euclidean Distance for classification. This research used ORL Faces database. Experimental result showed that NMF provided better results than DTCWT did. NMF reached 92% of accuracy and DTCWT reached 78% of accuracy. 

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