ComTech: Computer, Mathematics and Engineering Applications
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.
Articles
62 Documents
Search results for
, issue
"Vol 2, No 1 (2011): ComTech"
:
62 Documents
clear
Pengembangan Aplikasi Sistem Basis Data Penjualan, Pembelian, dan Persediaan: Studi Kasus Pada PT. Speed Game
Honni, Honni;
Marcelino, Ryan Ferdy;
Radjali, Yohanes
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.v2i1.2772
This study aims to to perform database application development system on purchasing, sales and inventory of PT. Speed Game, a company that applies manual database system. The company often faces difficulties in obtaining and processing data information about purchasing, sales and inventory that may affect the employee performance. Therefore, to facilitate the company in processing data and produce information quickly, precisely and accurately, a development of database application system is build using database lifecycle method. The result achieved is a database application system of purchasing, sales and inventory that will facilitate the company in running its business processes. It can be concluded that the development of database application system is necessary to help the company accelerate and simplify the obtaining information process and as well as store and retrieve any information needed.
Perencanaan Strategi Sistem dan Teknologi Informasi pada PT. Tripuri Mitra Nobelindo
Pelawi, Dewan;
Franky, Franky;
Willy, Charles;
Irwanza, Bobby
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.v2i1.2763
Competitions faced by companies are some obstacles in achieving the business objectives to maintain the company's growth and survival. The use of information technology trend requires companies to use it in order to compete with competitors. Strategic planning of information system (IS) and information technology (IT) which refer to business strategy should be customized to the company's business processes. The process of finding a future application portfolio is preceded by the discovery of business strategy, IS/IT strategy managemen and IT strategy. The method used is the strategic planning of information system and information technology of Ward and Peppard. The discovery of business strategy through internal and external analysis of the company is done using tools: PEST, SWOT, Porter's five competitive model, Value chain, and CSF. The analysis of the current information systems helps determine the proposed IS and IT plan. The result achieved is strategic system plan and information technology that are appropriate to the company in achieving its business goals.
Aplikasi Geofoam Sebagai Material Timbunan di Atas Tanah Lunak
Hidayat, Irpan;
Suhendra, Andryan
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.v2i1.2722
Geofoam is a geosintetik material made of Expanded Polystyrene (EPS) and Xtruded Polystyrene (XPS), which has a low weight property which makes geofoam widely used as a lightweight fill material and has been applied in Europe, especially in Eastern Europe. This is a preliminary research that emphasizes on the use of geofoam as a fill material on soft ground through theoretical analysis using Plaxis program. Supporting data used covers data of basic and fill ground taken from specific locations which are planned for subsequent research as a field test. Based on the Plaxis program results, the use of geofoam as a fill material give a higher safety factor value with a smaller deformation compared to laterite soil. This result indicates that the use of geofoam as a fill material can be considered to be applied in the country.
Manajemen Proyek Perangkat Lunak
Arifin, Furry
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.v2i1.2754
This article contains several things to be controlled by a Project Manager in order to be able to develop a software engineering project plan. The development methodology begins with survey, analysis and engineering in software planning. Establishing a good project team structure is as important as selecting team members who are also experts in their field. Perceiving that the construction and implementation of information technology-based systems are executed using a project management approach, the project manager is then the most responsible officer for the team performance. The project Manager will lead his team to planning and developing information technology projects in accordance with their intended target. There are three fields that must be considered in an information system project, namely: information systems, information technology, and information management.
Peran Serta Strategi Sistem Informasi Terhadap Keberhasilan Penerapan Teknologi Informasi Perusahaan
Oktavia, Tanty
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.v2i1.2710
The role and strategy of information sytems in all business sectors that exist at present have a very important priority for the company. This is inevitable because the information system has become an important part in the continuity of a company. Perhaps without the information system, the company’s operations will not be able to work properly because various sectors/divisions rely on business automation process. Planning strategy in an enterprise information system aims to enable companies to determine appropriate strategies in the information system implementation. Setting the information system and information technology strategically needs a way to understand the role of information technology on an organization. Most organizations will not hesitate to review the investment in information technology that has been done because the success of a company is also determined by the application of information systems. Evaluation of experience, success, and failure of the previous application is an important aspect in management strategy.
Metode Regresi Ridge Untuk Mengatasi Kasus Multikolinear
Ohyver, Margaretha
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.v2i1.2782
Multicolinear is a case that occurs in multi-linear regression analysis. Using multicolinear, it will be difficult to separate the influence of each independent variable towards the response variables. It also occurs in a farm production like cabbage. To solve this problem, Ridge regression method is used. This research aims to obtain a Ridge regression model to solve the multicolinear case. By using this method, the alleged regression coefficient is obtained by variance inflation factor less than ten for six free variables.
Pembangunan Sistem Knowledge Repository Manajemen Penyuluhan Pertanian dalam Rangka Mendukung Revitalisasi Penyuluhan Pertanian: Help Desk Penyuluhan Pertanian Komoditas Tanaman Pangan
Harisno, Harisno;
Jingga, Freddy
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.v2i1.2768
Development of knowledge Repository Management System for Agricultural Extension aims to help the extension worker function for at least in three things: technology transfer, facilitation and advisory to farmers as the main actors of agribusiness. To support these functions, the extension workers need to master as well as utilize information and communication technology. A help Desk of Agricultural Extension System is developed using PC with PHP programming language. Data management in the Database of Agricultural Extension Knowledge Repository is managed by using MySQL. The web-based application will enable users to access data, information and agricultural extension knowledge based on needs. Help Desk of Agricultural Extension System is a knowledge repository that can be used to help the agricultural extension in disseminating agricultural technology packages from the on-farm upstream to the downstream sub-system, and can be used as a medium of communication forums about problems of actual agricultural practices.
Penerapan Visual Basic for Application (VBA) Sebagai Alat Bantu Ajar Enkripsi dan Dekripsi DES
Yasri, Yasri
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.v2i1.2805
The DES encryption/decryption algorithm is quite a popular algorithm due to ease in learning. Calculations for DES using binary numbers however are very difficult, including 16 rounds required for a full encode. Teaching DES encryption manually is difficult since it requires a long time. It also requires high accuracy for the 64-bit binary numbers, the possibility of mistakes are very high. Besides, the students cannot perform self-check, whether the given task is done correctly. Application of Excel and VBA is used to facilitate observation, comparison, and understanding the DES algorithm. The result is a teaching model using DES for modern encryption.
Hubungan Deret Bertingkat Berdasarkan Bilangan Eulerian dengan Operator Beda
Gunawan, Alexander Agung Santoso
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.v2i1.2727
Rank series defined as: is a generalization of the fixed rank series (the sum of powers), in which its closed solution has been found empirically by Jacob Bernoulli in 1731. This paper will explore the relationship between rank series and differential operator. To see this relationship, examples for the case m = 1.2 and α = 1.2. are provided.
Perencanaan Geometri Jalan Berdasarkan Metode Bina Marga Menggunakan Program Visual Basic
Prahara, Eduardi
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.v2i1.2759
One of the main things in a highway construction plan is the geometric design that includes horizontal and vertical alignment design. This study aims to formulate the steps of highway geometric design into Visual Basic 2005 program. The design steps are the calculation of horizontal and vertical alignment. Using Visual Basic 2005, it is expected that the calculation can be done faster than the manual calculation without mistake. The program is validated by comparing results obtained by manual calculations with a difference about 1x10-4 which is considered accurate. As a case study, a geometric road design is conducted in Bogor in 2009 with a fairly low-speed plan 20-40 km/hour. In the plan, the road has 28 PI (Points of Intersection) on the horizontal alignment and 15 PVI (Point of Vertical Intersection) and obtains good results in accordance with requirements and regulations issued by Bina Marga.