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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 64 Documents
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Search results for , issue "Vol 5, No 2 (2014): ComTech" : 64 Documents clear
Model Persamaan Simultan pada Analisis Hubungan Kemiskian dan PDRB Bekti, Rokhana Dwi; David, David; N, Gita; Priscillia, Priscillia; Serlyana, Serlyana
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.v5i2.2277

Abstract

Simultaneous model is a model for some equation which have simultaneous relationships. It was often found in econometrics, such as the relationship between Gross Domestic Regional Product (GDRP) and poverty. GDP is a common indicator that can be used to determine the economic growth occurred in region. Meanwhile, poverty is one of the indicators to measure the society welfare. Information about these relathionships were important to perform the relathionsips between GDP and poverty. So this research conducted an analysis to obtain simultaneous models between GDRP and poverty. Estimation of the parameters used is Two-Stage Least Squares Estimation (2SLS). The data used are 33 provinces in Indonesia at 2010. By α = 5%, it was conclude that variable which significant effect on GDRP is poverty, export, and import. Meanwhile, the variables that significantly affect poverty are population. The simultaneous model (α = 5%) also conclude that there is no simultaneous relationship between GDRP and poverty. However, with α = 25%, there is a simultaneous relationship between GDRP and poverty.
Pengembangan Aplikasi Penjadwalan Wisata Harian pada Smartphone dengan Pendekatan Scrum Prasetio, Yen Lina; Hanafiah, Novita; Yosanny, Agustinna; Yolanda, Catharine; Musbar, Febrina Piecella; Septianto, Denny
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.v5i2.2175

Abstract

The technology development affects people activites especially in this 20th century. Mobile phone ischanged into smartphone and travelling becomes a new lifestlye. A Tourism scheduler with a reminder is created from this research to fulfill the new trend of people lifestyle. The travelling data is stored in the system and some information such as the point of interest of an area, hotel, and transportation to reach the area are provided. Waterfall model becomes the method to build this system. Hence, an application that can create a trip for the user is completely built in Blackberry application system, consist of the trip information. The history feature provided in this application can be an advantange for the user to choose the new travelling destination. Moreover, the application has a good interface follow the eight golden rules and has a good performance that helps the tourists/users to create their own schedule and set the reminder for them.
Penerapan Dinamika Fluida dalam Perhitungan Kecepatan Aliran dan Perolehan Minyak di Reservoir Kusumastuti, Dwi Listriana
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.v5i2.2232

Abstract

Water, oil and gas inside the earth are stored in the pores of the reservoir rock. In the world of petroleum industry, calculation of volume of the oil that can be recovered from the reservoir is something important to do. This calculation involves the calculation of the velocity of fluid flow by utilizing the principles and formulas provided by the Fluid Dynamics. The formula is usually applied to the fluid flow passing through a well defined control volume, for example: cylinder, curved pipe, straight pipes with different diameters at the input and output, and so forth. However, because of reservoir rock, as the fluid flow medium, has a wide variety of possible forms of the control volumes, hence, calculation of the velocity of the fluid flow is becoming difficult as it would involve calculations of fluid flow velocity for each control volume. This difficulties is mainly caused by the fact that these control volumes, that existed in the rock, cannot be well defined. This paper will describe a method for calculating this fluid flow velocity of the control volume, which consists of a combination of laboratory measurements and the use of some theories in the Fluid Dynamics. This method has been proofed can be used for calculating fluid flow velocity as well as oil recovery in reservoir rocks, with fairly good accuration.
Aplikasi Edukasi “Music Traditional Arcade” Berbasis Android David, David; Rucitra, Andiny; Fibriyenti, Fibriyenti; Anthonio, Anthonio
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.v5i2.2431

Abstract

The purpose of this study is to assist the government in introducing traditional music instruments in Indonesia to the community, especially teenagers aged from 16-20 years. Given increasingly in modern era makes people start to forget traditional music instruments and prefers modern music instruments. The method used in this research is literature study, observation, application design, and application testing that has been made. Result obtained from this study is an application that can meet the objectives of the study. The conclusion of this study is that the application gave elements and information about some traditional music instruments in interesting ways through mobile app game followed with attractive appearance and could be one way of helping the government to preserve traditional music instruments and provide insight into knowledge through the history of the instrument.
Perencanaan dan Penjadwalan Pariwisata dengan Konsep Jejaring Sosial Meiliana, Meiliana; Nugraha, Krishna; Liemunandar, Kevin
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.v5i2.2191

Abstract

Most of tourist will choose new unvisited tourism spot as their new tourism destination. However, limited information of the new tourism destination often becomes a barrier to plan and schedule their tourism activity. The purpose of this research is to create an application called IndoLista, to provide complete tourism spot information, create tourism planning and schedule with social media concept. The social media concept will facilitate communication and interaction between user to get updated information in effective way. Eachuser will be able to organize their tourism planning with application's feature provided, completed by detail information of tourism spot. Research methodology is divided into two parts; analysis method by book andjournals study literature, analyze similar application, user data collection with quisioner and and design method with UML tools. Quisioner evaluation conclude society opinion that the application as research result, give asolution to user in the interest of planning and schedulling online tourism trip by providing complete information of tourism spot and facilitating interaction and communication between user via social media concept.
Tata Ruang Lingkungan Kampung Batik di Jakarta sebagai Kawasan Wisata Industri Rumah Tangga Katarina, Widya; Nurdiani, Nina; Mariana, Yosica
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.v5i2.2326

Abstract

Research on Kampung Batik Spatial Environment in Jakarta as Household Industrial Area Tourism conducted in Kampung Batik Palbatu through descriptive approach. This study aims to identify the characteristics of the environment and the potential area of Kampung Batik in Jakarta. Data collection in the field carried out by the method of observation and the mapping of spatial design of buildings and the environtment. Data analysis was performed by descriptive analysis. The study results showed that the Kampung Batik Palbatu as batik village in Jakarta, which was conceived and developed by a community group of batik lovers, demonstrated slow development. Image or the character of the environment of the region of Kampung Palbatu as Kampung Batik is yet to be seen, since the elements of the image-forming region are not clear. The potential of the region as the region of home industry namely Kampung Batik has started there, but lacks of supports from the government, and the local community.
Teknik Pengawetan Fillet Ikan Nila Merah dengan Senyawa Anti Bakteri asal Lactobacillus Acidophilus dan Bifido Bacteria Biffidum Saputra, Dede; Nurhayati, Tati
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.v5i2.2358

Abstract

Red tilapia is a good commodity to be developed because it has a high nutritional value composition, with a protein content 17.8%, fat 2.8%, and others composition. The fillet of red tilapia fish is easy to spoil, because of S. aureus, Salmonella sp., and other microbes. Many methods are used to save and preserve the quality of fillet, such fillet preparation through good sanitation practices, cooling process, but the effort were not optimal. The objectives of this study were to 1) evaluate the potency of antibacterial produced by Lactobacillus acidophilus and Bifidobacteria biffidum to inhibit the growth of spoilage bacteria that contaminated the red tilapia fillet; 2) evaluate the effect of antibacterial compounds produced by Lactobacillus acidophilus and Bifidobacteria biffidum of inhibiting the setback fillet quality, 3) determine the shelf life of red tilapia fillet at room temperature. Antibacterial activity test is done by using the well diffusion method; the rate of deterioration of quality of fish tests done by observing the organoleptic parameters, pH measurement test, total volatile base method. Total number of bacteria were performed by Standard Plate Count (SPC) test. The LAB’s are able to inhibit the growth of spoilage bacteria Pseudomonas aeruginosa about 8.67-9.00 mm and Listeria monocytogenes about 8.33-9.00 mm through the well diffusion method. pH values about 5.71-5.74, TVB values about 1,26-21.43 with SPC test about 1.39-4.83 CFU/mL. The antibacterial compounds could inhibit  the rate of deterioration of quality red tilapia fillets until 14 hours.
Aplikasi Analytical Hierarchy Process (AHP) pada Pemilihan Software Manajemen Proyek Komsiyah, Siti
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.v5i2.2292

Abstract

The problem with many alternative decisions in the areas of management and administration commonly referred to as multi-attribute decision problems. For example, the decision problem with many variables so that the target decision can not always be determined easily. Well-known method of approach, to overcome this kind of problem is called the Analytical Hierarchy Process (AHP). AHP technique is given by arranging alternative levels of decision, so as to provide a structured quantitative description. Application of multi-attribute types ofproblems such as problems in the selection of software, car, project proposal, the university, the best employees, and so forth. In this paper, the approach developed using the AHP in software selection project management.
Nosql Technology In Android Based Mobile Chat Application Using Mongodb Layona, Rita; Tunardi, Yovita
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.v5i2.2180

Abstract

Along with the development of data storage technology which previously using relational concept began to change to the non-relational concept or sometimes referred to as the term NoSQL technology. Data storage in NoSQL is no longer based on the relations between tables but using another methods, one of them is document-oriented. This method was applied specifically in MongoDB. This concept brings new hope because oftheir superiority that can handle very large data with promising performance and is perfect for agile system development. The purpose of this research was to measure the performance NoSQL, especially MongoDB with implemented it in a Android based mobile chat application. This research uses three methods, analysis method including literature study, analysis of similar application, questionnaires, design method using Agile SofwareDevelopment, and evaluation method including eight golden rules, analysis of similar application, questionnaires, and interview. The results of this research is a mobile chat application that uses MongoDB as the data storage technology. Through this research can be drawn the conclusion that NoSQL technology implementation, MongoDB, give special advantages like lighter data storage and faster data access.
Wedding Organizer Order Management Kristin, Desi Maya; Lisanti, Yuliana
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.v5i2.2283

Abstract

This information system is used as a solution that can help to meet the requirements of the couples. The research methods are data collection, analysis and design. Data collection method implemented by surveys including interviews with 58 clients, 15 vendors, and 12 WO (Wedding Organizer) and by literature study that includes books and journal related. Object oriented is used as the method for system analysis and design. The result is a web based information system that connects vendors and clients in one online place. The web based application can be used to book the reception hall, catering food for guests, entertainments, bridal, car loan, prewed and receptions photos. The benefits of the web based applications are user can costumize or choose the packages, check the price information and get reports related to Wedding Organizer Order Management business process. The results of the qualitative interviews to 58 clients who already used the applications is the client get shorter time compare to clients who manage their own wedding reception.

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