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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
 102   103   104   105   106 
Rancangan Sistem Informasi Penggajian Pada Perusahaan Jasa Bengkel Angelina Permatasari; Lianawati Cristian
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.v1i2.2405

Abstract

The aim of the research is to analyze existing problems on companies in the automotive service industry, namely, analyzing the current payroll system, identifying needs, and modify and design a better payroll system accordingly. Methods used are analysis methods and design methods. Analysis methods conducted are literature study, field observation, survey on current system, needs analysis survey, identifying information needs, interview, and design methods used is Object Oriented Analysis and Design (OOAD). Obtained results are improved payroll system which has been done manually before. It can be concluded that a computerized payroll information system can solve existing problems and old procedures. 
Perancangan Sistem Otomatis Update Pada Aplikasi Desktop Abios Karto Iskandar
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.v1i2.2406

Abstract

Unlike web applications easier to update the latest version, desktop applications more difficult and must involve the user in doing so. It is caused by a desktop application is an application that is installed in the computer user. The purpose of this research is to design an automatic system updates on a desktop application, an example case: Application Binus International Operational Support (ABIOS). This research used literature study and system design. In desktop applications, often there is update the latest applications that are not known to the user who sometimes fatal and disrupt business operations. Generally, developer will inform the changes version to user that they can update the application. In an update of applications, should be done by the system automatically, not manually by users. Once in a while, the user background is not from computer base. After doing the research, it can be concluded that the system automatically updates the application has benefits to users in obtaining information regarding the latest version, and can assist in automatically update the latest application is based on computerization. For further development of this system is expected to operate on multi platforms and or mobile applications. 
Perbandingan Metode Gaussian Particle Swarm Optimization (GPSO) dan Lagrange Multiplier pada Masalah Economic Dispatch Siti Komsiyah
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.v3i1.2407

Abstract

On electric power system operation, economic planning problem is one variable to take into account due to operational cost efficiency. Economic Dispatch problem of electric power generation is discussed in this study to manage the output division on several units based on the the required load demand, with minimum operating cost yet is able to satisfy equality and inequality constraint of all units and system. In this study the Economic Dispatch problem which has non linear cost function is solved using swarm intelligent method is Gaussian Particle Swarm Optimization (GPSO) and Lagrange Multiplier. GPSO is a population-based stochastic algorithms which their moving is inspired by swarm intelligent and probabilities theories. To analize its accuracy, the Economic Dispatch solution by GPSO method is compared with Lagrange Multiplier method. From the test result it is proved that GPSO method gives economic planning calculation better than Lagrange Multiplier does.
Pemanfaatan E-Application Dalam Peningkatan Proses Audit Mutu Internal (Studi Kasus : Universitas Bina Nusantara) Cuk Tho; Wihendro Wihendro; Yohannes 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.v1i2.2408

Abstract

This paper shows the use of e-application to assist the implementation of internal quality audit, which is one of the conditions to be met within the requirements of ISO 9000 Quality Assurance System. E-application that is used other than as a data repository is also used as a workflow. Where is the workflow that is made will ensure that the repairs is carried out in accordance with what has been planned. As one of the ISO documentation requirements in Clause 4.2.4 that a document should be done traceable, then the use of e-application is very helpful in conducting the search trail. In addition, the e-application allows auditors and auditees in filling the audit results, since it can be accessed from anywhere as well as due to web-based, it can be done from any computer without the need of an installation. E-application that was developed to function as a workflow and data repository that can be used as part of monitoring and data history which will help to improve the performance of the unit hence also improves performance of Bina Nusantara University. 
Solusi Deret Pangkat Tetap Dengan Fungsi Pembangkit Alexander A.S. Gunawan
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.v1i2.2409

Abstract

This article discusses about the sum of powers , which closed solutions empirically have been discovered by Jacob Bernoulli in 1731 in The Art of Conjecture. In this paper, we will find a closed solution of the sum of powers by using the Generating Function. By learning how to derive the closed solution of the sum of powers, the Generating Function can be used to solve the more general series forms.  
Perancangan Program Aplikasi Market Basket Analysis untuk Mendukung Persediaan Barang dengan Metode Fuzzy C-Covering Zahedi Zahedi; Charies Chandra
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.v3i1.2410

Abstract

Any difficulty in analyzing sales transaction data is often faced by a company due to the huge number of sales transactions and the limited tools to process the data. It results in losses for the company since it is difficult to estimate the goods supply for subsequent sales. In this paper a data mining application is designed to analyze sales data. Market Basket Analysis is a data mining application that aims to determine most purchased or used products at once by the consumer. The process of Market Basket Analysis is to analyze consumer buying habits by finding associations among products purchased by different customers. The method used in Market Basket Analysis is a method of Fuzzy c-Covering, which is one method to classify the elements of a universal set into partitions of fuzzy sets. This study found that the value of support and confidence is part of the Market Basket Analysis, computed using the Fuzzy c-Covering. The higher the limit, the more selected the analytical results obtained are.
Seleksi Citra Berdasarkan Ciri dengan Algoritma Threshold Mengunakan Fuzzy Kurva S dan Fungsi Min A. Haris Rangkuti
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.v3i1.2411

Abstract

Image retrieval process of fruits and flowers with CBIR concept was represented by the colors and shapes using adaptive histogram method for color, and invariant moment for shape. To measure the similarity between the query image and the basis data image Euclidean distance function was used, where the result is f(x). Calculations for f (y) through the process of ‘fuzzy-ing’-S curve, where the value of f(x) guides the sigmoid function. The value f(y) on each image than the threshold value based image query. Basically, the algorithm displays the image based on Threshold features, by comparing the threshold value with the value f(y). A high grade value (approaching 1) indicates that the feature of the sample (query) image is similar to the basis data image, and vice versa. The process was continued by comparing the value grades of the image representation of color and form using min operator in fuzzy logic, so that it only displayed several images that have some resemblances in accordance with the original image. The advantage of threshold algorithm and the fuzzy function - compared to other methods – lies in the simplicity method in the image retrieval, so that the performance of CBIR becomes more reliable and effective.
Perancangan Sistem E-Learning Berbasis Web pada World Vision Indonesia Agus Putranto
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.v3i1.2412

Abstract

World Vision Indonesia has several training programs with a very large total cost for 936 employees located in various parts of Indonesia, so that the manual training is considered less effective. Therefore, this research is conducted to design a learning management system application that supports the training process within the organization, and determine the needs for training materials. This research implemented strategyanalysis based on matrix EFE, IFE, SWOT, IE, and QSPM, as well as analysis and design of materials using Addie model. Meanwhile the design used a structured design method or OOAD. This research resulted in an application that supports the learning management system training process within the organization, provides accessible training materials by all employees at any time, and provides various features that creates training activities more effectively. The implementation of learning management system supports the company's strategy primarily to improve the quality of employees as well as reduces communication barriers between trainers and trainees both within and outside of training time.
Sistem Pakar Berbasis Web untuk Pengenalan Dini terhadap Karakter Investasi Individu Albert V. Dian Sano
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.v3i1.2414

Abstract

The objective of this research is to develop a web-based expert system for early detection towards characters of investment of people who will invest immediately on their productive ages. The development of this application is encompassing four primary activities in developing an expert system, namely: knowledgeacquisition, knowledge representation, knowledge inferencing, and knowledge transfering. Knowledge acquisition is a process of acquisition or transfering knowledge or expertise of an expert through a knowledge engineer. Knowledge representation is a process of transfering knowledge into a computer based system. Knowledge inferencing is a reasoning process performed by an expert system to draw a conclusion or a final result. The reasoning process applies a forward-chaining method. Knowledge transfering is a process of transfering knowledge from an expert system to a user (non-expert one) through a user interface of the expert system. This expert system has been tested to about 300 users. This simple system generally runs quite well although there are still some weakness to refine in the further research.
Penerapan E-Customer Relationship Management pada Taman Kanak-Kanak Hanifa Dina Chairuna; Yuliana Lisanti; Engkos Achmad Kuncoro
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.v3i1.2415

Abstract

Maintaining relationships with customers is an important factor to be the key to success of Hanifa kindergarten as a pre-school institution. It requires a precise strategy to be executed and a system to support the strategy. The design method begins with several analyses on the running business processes and the external and internal factors that affect the school. The analyses are then followed by a SWOT Matrix and Internal-External Matrix which produce several alternative strategies to be implemented. The strategy formulation results in a website-based application of E-Customer Relationship Management (E-CRM) with features including three phases in Customer Relationship Management, which are acquire phase, enhance phase and retain phase. The analysis and system design is conducted using object-oriented analysis and design (OOA & D) as documented by notation Unified Modeling Language (UML).

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