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ComTech: Computer, Mathematics and Engineering Applications
ISSN : 20871244     EISSN : 2476907X     DOI : -
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.
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Articles 76 Documents
Search results for , issue "Vol. 2 No. 2 (2011): ComTech" : 76 Documents clear
Aplikasi Migrasi Database dan Replikasi Bi-Directional Michael Yoseph Ricky
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.v2i2.2828

Abstract

This study aims to analyze and design a migration and replication configurations in an enterprise using several methods such as literary study and direc survey to the company; analysis on hangar systems, process migration and replication as well as existing problems; and a prototype design for migration process implementated with Oracle SQL Developer and replication process implementated with Oracle GoldenGate. The study resluts ini a prototype for migration and replication configuration processes using Oracle's Golden Gate which can produce two sets of identical data for backup and recovery. Also a simple tool is designed to assist active-active replication process as well as active-passive one. The migration process from MySQL database to Oracle database using Oracle GoldenGate can not be done because GoldenGate Oracle has bugs related to the binary log, so database migration is done using Oracle SQL Developer. However, bi-directional replication between Oracle database using Oracle GoldenGate can ensure data availability and reduce the workload of primary database. 
Aplikasi Online Mobile Repository System Michael Yoseph Ricky
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.v2i2.2829

Abstract

In order to support the decision making process effectively and efficiently, a lot of companies invest in information technology for data management and storage. The information technology is emphasized in data storage of daily transactions in large numbers in a medium, so that data can be easily processed. Online Mobile Repository System is a system that uses a temporary storage system which is practical and can be accessed online. Thus, the system simplifies data access and organization anywhere and anytime. The design of this system uses the methods of literature review, interviews, field studies, and combined design studies. The research results in a data storage system which is organized, safe and structured to support the meeting process. 
Penerapan Sistem Informasi Geografi pada Traffic Management Center Michael Yoseph Ricky
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.v2i2.2830

Abstract

This study aims to analyze and design a geographic information system as a tool for traffic flow monitoring and regulation for the Traffic Management Center Polda Metro Jaya. Data was collected through field studies relating to the engineering of software and hardware. Interviews were also conducted to the relevant parties. Then it is proceeded with systems analysis and design methods. This system succeeded in helping the Traffic Management Center to find out the points which are prone to cause congestion, so that it can quickly obtain the traffic flow information. 
Analisis Pemilihan Perangkat Lunak Sistem Enterprise Resource Planning (ERP) Menggunakan Analytical Hierarchy Process (AHP): Studi Kasus pada PT Ciliandra Perkasa Roni Kurniawan
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.v2i2.2831

Abstract

Enterprise Resource Planning (ERP) can be described as a concept for planning and managing organization resources to create value added for stakeholders. PT Ciliandra Perkasa as an agribusiness company realized the importance of ERP system to support their operational activities. Indeed, there are many problems on the ERP implementation. Therefore, it is needed to build a proper ERP system process to be implemented. This issue will be the research problem. Implementing a qualitative method, this research uses primary data and secondary data as samples. Tests and analysis use Analytical Hierarchical Process (AHP) which its results are expected to guide the management of PT Ciliandra Perkasa in selecting proper software of ERP application. 
Deteksi Kemacetan Lalu Lintas Melalui Kamera menggunakan Pin Hole Algorithm Samuel Mahatmaputra; Erwin Permata; William William
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.v2i2.2833

Abstract

This paper describes the modifications to the Pinhole algorithm and applies it to the detection of highway congestion using an IP camera. This algorithm can detect the congestion on the highway with a fairly high degree of accuracy and the small possibility of false alarms, so that it helps reporting congestion and road users to take into account the best and quickest way. The methods used in this research are literature study, questionnaire analysis, and evaluation of application performance. The application made in this study can be further developed for combined detection with many cameras, and can support traffic regulation as well as SMS gateway service to check the condition of a road segment. At the end of this paper are presented techniques and methodology of determining the parameter values used in the calibration. 
Datawarehouse Sebagai Alat Penunjang Pengambil Keputusan Bisnis dalam Analisis Penjualan: Studi Kasus pada Bagian Penjualan PT XYZ Sepsugiarto Sepsugiarto
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.v2i2.2834

Abstract

Datawarehouse as a business decision support tool for sales data analysis functions to assist the sales department in making daily decisions. PT XYZ often experiences problems in analyzing its sales data, such as can not identify the highest sales areas and the total highest number of sales. The purpose of this study is to analyze and design a decision support tool which is appropriate to the needs of the sales of PT.XYZ. The design of systems uses object-oriented approach while database design uses data warehouse method. Any result obtained from this study is a design a data warehouse that can be used to assist the sales department to create sales decisions everyday. The designed decision-making system based on data warehouse can help the sales department in their daily activities. 
Efisiensi Algoritma dan Notasi O-Besar Subandijo Subandijo
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.v2i2.2835

Abstract

Efficiency or the running time of an algorithm is usually calculated with time complexity or space complexity as a function of various inputs. It is common to estimate their complexity in the asymptotic sense, i.e., to estimate the complexity function for arbitrarily large input. Brute-force algorithm is the easiest way to calculate the performance of the algorithm. However, it is not recommended since it does not sufficiently explain the efficiency of the algorithm. Asymptotic estimaties are used because different implementations of the same algorithm may differ in efficiency. The big-O notation is used to generate the estimation. 
Sistem Pengiriman Barang Berbasis Web pada PT Prabu Expressindo Elidjen Elidjen; Shellyana Tanun; Anggoro Dwi Saputro; Nicky Laurens Simolang
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.v2i2.2836

Abstract

PT Prabu Expressindo which has carried on business in freight services since 1999 finds several constraints associated with ease of services access for the service users. Those constraints become the background of the web-based delivery system development with the primary objective to overcome the difficulties of service access and goods delivery and to add some features to facilitate the service users in communicating with the PT Prabu Expressindo. The linear sequential process model is used to develop the overall system and the literary study is used to enrich the insight to develop a better system. The user friendly system obtains a lot of information which in turn facilitates the goods delivery. 
Analisis Customer Value pada Perancangan Aplikasi E-Procurement di PT Indesso Aroma Henkie Ongowarsito
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.v2i2.2837

Abstract

More online business applications are utilized by companies; one of which is e-procurement. PT Indesso Aroma as a manufacturing company of essential oils, natural extracts, and aromatic chemicals products needs to improve its conventional procurement process to e-procurement to be more effective and efficient. For that, a research is conducted towards the performance and interest of the company's procurement system. Furthermore, the current SAP system application support is developed, as the customer values are analyzed using gap analysis to see the benefits of its application for the company. The e-procurement design uses OOAD method with UML diagram notation including analysis of problem domain, application domain, architectural design and component design. Cost-benefit analysis is performed to see an increase in customer value from the e-procurement application based on measurements of NPV, IRR and ROI of investing in the e-procurement design. Thus an e-procurement application is created that is expected to improve the company’s procurement process with several key features such as Purchase requisition, Purchase Order, Purchase Return, Supplier Catalog and Supplier Quotation. 
Penggunaan Single Sign On (SSO) pada Jaringan Internet Badan Pengkajian dan Penerapan Teknologi (BPPT) Johan Muliadi Kerta; Panji Adiprabowo; Eva Kusmiyati; Sylvia Astri Wulandari Rahardjo
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.v2i2.2838

Abstract

Using various applications needs more than one authentication or user and password to login. Users in BPPT found this problem on their network application. Implementation of Single Sign On can help users to use only one authentication for many applications. Therefore a research is conducted to design and implement Single Sign On system that simplify and facilitate the user's email account to access application. Data are collected from literature study, system observation, and interviews while the design uses Network Development Life Cycle (NDLC) method. The research results in a Single Sign On system that utilizez Lightweight Directory Access Protocol (LDAP). In addition, Remote Authentication Dial-In User Service (RADIUS) is managed in accordance with the needs of the institution. Single Sign On system designed runs well and is able to provide conveniences for the user to use the services of existing applications, as it provides a standard email address to the user's identity. It also helps administrators to perform control of users trying to login. 

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