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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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Analysis and Design Information System Logistics Delivery Service in Pt Repex Wahana Surja, Stephanie; Sanjaya, Lius Steven
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 4 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i4.2177

Abstract

Analysis and Design of Logistic Delivery System in PT Repex Wahana aims to analyze company?s need in existing business process of logistic delivery service. This will then be used in the development of an integrated system that can address the problems in the running process of sending and tracking the whereaboutsor status of the delivered goods which are the core business processes in the enterprise. The result then will be used as basis in the development of integrated information system in pursuit of corporate solution for process business automation, delivery process, inventory, and logistic delivery tracking, which is the core of the company business process, and it will be documented using Unified Modeling Language. The information system is meant to simplify the delivery and tracking process in the company, besides will minimize lost and error of data which is often happened because of the manual and unorganized transaction data processing.
Konsolidasi Data Warehouse untuk Aplikasi Business Intelligence Rudy, Rudy
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 2 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i2.2313

Abstract

As the business competition is getting strong, corporate leaders need complete data that as a basis for determining future business strategies. Similarly with management of company "A", a pharmaceutical company which has three distribution companies. Each distribution company already has a data warehouse to generate reports for each of them. For business operational and corporate strategies, chairman PT "A" requires an integrated report, so analysis of data owned by the three distribution companies can be done in a full report to answer the problems faced by the managemet. Thus, data warehouse consilidation can be used as a solution for company "A". Methodology starts with analysis of information needs to be displayed on the application of business intelligence, data warehouse consolidation, ETL (extract, transform and load), data warehousing, OLAP and Dashboard. Using data warehouse consolidation, information access by management of company "A" can be done in a single presentation, which can display data comparison between the three distribution companies.
Studi Mekanisme Kinetik dengan Parametrik Camshaft pada Selubung Bangunan Adaptif Sjarifudin, Firza Utama
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 2 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i2.2337

Abstract

Adaptation is essential to manage the problem of climate change. In order to meet the challenge, this paper proposes an adaptive building envelope system that can optimize its configuration by responding environmental changes to achieve new levels of sustainable performance and energy efficiency. Most current adaptive building envelope uses kinetic techniques make its formation transformable. However, the use of kinetic components such as a large amount of interactive motorized system that requires electrical power may alsocause further decrease the building energy efficiency. This paper proposes a camshaft mechanism system for adaptive building envelope that uses less motors, controllers, and sensors. This system uses pre-programmed analysis data of daily solar radiation changes to parametrically drive the number of rotation phase and length of nose (Lobe Lift) that generates the shape of camshaft. The camshaft then controls the values of opening and closing of the building envelope components. The advantages of this system are less energy consumption, less maintenance and lower cost since it uses fewer motors, controllers and wiring. In conclusion, this paper has developed a prototypical tool that facilitates a new approach to energy-efficient kinetic buildings.
Mempermudah Pengawasan Operasional dan Keuangan di Biro Perjalanan dengan Menggunakan Aplikasi Gtass Arifin, Furry
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.v5i2.2234

Abstract

Some travel agencies have difficulty in monitoring the operational control and generating financial report. This is due to the operation of the data storage for business transactions conducted separately , and the reporting of the financial statements company are still found not in accordance with the bank reconciliation . In this study, the methodology the system development life cycle (SDLC) is used ranging from data collection through interview, observation and study of the literature up to the stage of application development, namely the analysis phase in the travel agency using the method of direct observation of the flow through the reporting process. After that, go into the design stages of database design methods and user interface. Global Travel Agency System Solutions (GTASS) product is the integration system designed specifically for the corporate travel agency that exists to facilitate control operations, such as creating a bill (invoice), Letter of Gurantee (LG) and financial oversight as receipts and expenditure of money. With the ease of processing, then the presentation of the financial statements can be done automatically. Important early financial supervision carried out by the travel agency due to an increase in sales without adequate consideration of financial supervision, will lead to the emergence of new problems, which in turn will hamper efforts to increase the sales.
Image Retrieval Berdasarkan Fitur Warna, Bentuk, dan Tekstur Layona, Rita; Tunardi, Yovita; Tanoto, Dian Felita
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.v5i2.2369

Abstract

Along with the times, information retrieval is no longer just on textual data, but also the visual data. The technique was originally used is Text-Based Image Retrieval (TBIR), but the technique still has some shortcomings such as the relevance of the picture successfully retrieved, and the specific space required to store meta-data in the image. Seeing the shortage of Text-Based Image Retrieval techniques, then other techniques were developed, namely Image Retrieval based on content or commonly called Content Based Image Retrieval (CBIR). In this research, CBIR will be discussed based on color, shape and texture using a color histogram, Gabor and SIFT. This study aimed to compare the results of image retrieval with some of these techniques. The results obtained are by combining color, shape and texture features, the performance of the system can be improved.
Penerapan Regresi Linier Ganda untuk Mengukur Efisiensi Pola Penggunaan Air Tanah System Rice Intensification (SRI) di Kabupaten Bandung, Subang, dan Karawang Sungkawa, Iwa
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 2 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i2.2270

Abstract

This paper discusses the application of multiple linear regression to measure the efficiency and success of the pattern of groundwater using System of Rice Intensification. The purpose of this paper is to provide an overview of the procedures and the use of multiple linear regression analysis and to measure the impact of independent variables (habits of farmers P3A) in the use of groundwater. Multiple Linear Regression analysis is used to examine the relationships and dependencies between farmers habits P3A to the efficiency of water use patterns of SRI. The results show that the success and efficiency groundwater use is recommended in SRI pattern depends on the habits and behavior of the P3A farmers use ground water for their farming needs.
Work Performance Measurement of Data Entry Employees in E-Commerce Industry Based on Mental Workload Value Soenandi, Iwan Aang
ComTech: Computer, Mathematics and Engineering Applications Vol 10, No 2 (2019): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v10i2.5688

Abstract

This reseach aimed to measure the mental workload of data entry processing tasks in the e-commerce industry based on mental workload value. It was to determine the factors influencing mental workload mainly induced by the data entry process. The experiments without work instruction and with two types of work instruction were conducted to diagnose the mental workload. The measurement of the initial mental workload condition of data entry employees was conducted in the laboratory. Then, the Electroencephalogram (EEG) measurement using sensors from Emotiv was performed every 30 minutes, and the data of EEG measurements (focus, engagement, and stress) were collected using the laptop. Meanwhile, pulse measurement (heart rate) was measured before and after the work. Raw National Aeronautics and Space Administration Task Load Index (NASA-TLX) and reaction time measurement were conducted after the work. Through these experiments, the researchers identify that mental effort and fatigue are the significant determinants of mental workload value in the data entry process of the e-commerce industry. In respect of the results of work performance analysis, it is recommended that the placement of work instruction should be near the employee. Then, the task demand (minimum completion target) should be adjusted according to each employee?s capacity.
Kandungan Zat Kimia Anorganik Pada Beberapa Proses Filtrasi Air Minum Kemasan dan Isi Ulang Menggunakan One-Way Manova Tanty, Heruna
ComTech: Computer, Mathematics and Engineering Applications Vol 1, No 1 (2010): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v1i1.2167

Abstract

Analysis of chemical substances in some processes an-organic bottled water and drinking water recharge has been done using One Way Manova. Samples originated from springs Ciburial Bogor taken in May 2009 at 10 depots refill drinking water process (AMDIU) Around Syahdan and Anggrek Campus of Bina Nusantara University. Reserve osmosis filtration processes and filtration Hollow Fiber and testing of heavy metal contents of five CN, Pb, Mn, Cr, and Cd in the company carried out the bottled water (bottled water) PT Buana Cikarang Tirta Abadi. Test results and analysis show that the processed water filtration contains CN, Pb, Mn, Cr, and Cd was lower than that of water filtration was not processed. And drinking water processed by filtration Reserve Osmosis, contains CN, Pb, Mn, Cr, and Cd was lower than that processed by Hollow Fiber Filtration and Granular Activated Charcoal.
Pembuatan Sistem Informasi dengan Analisis dan Perancangan Berorientasi Objek Pelawi, Dewan
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 2 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i2.2303

Abstract

Analysis of business processes by observing the existing system is the main issue to produce information systems according to the needs of the company. Any search of problem solutions when doing business process is performed by a system approach. Object Oriented Analysis and Design (OOAD) is one of the methods currently used to build information systems. The method includes the building of activity diagrams, event table, class diagram, usecase diagrams, usecase description, state chart diagrams, deployment and software architecture, first-cut design class diagram, simple sequence diagram (SSD), sequence diagram (first-cut, view layer, data access layer), communication diagram, updated design class diagram, package diagram, persistent object, and user interface. The results obtained after performing all phases of the method is an information system based on the needs of companies that is expected to improve the performance and effectiveness of the company's business processes and support the business goals.
Fractal Communication System Using Digital Signal Processing Starter Kit (DSK) TMS320c6713 Darlis, Arsyad Ramadhan
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 4 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i4.2202

Abstract

In 1992, Wornell and Oppenheim did research on a modulation which is formed by using wavelet theory. In some other studies, proved that this modulation can survive on a few channels and has reliability in some applications. Because of this modulation using the concept of fractal, then it is called as fractalmodulation. Fractal modulation is formed by inserting information signal into fractal signals that are selffractal similary. This modulation technique has the potential to replace the OFDM (Orthogonal Frequency Division Multiplexing), which is currently used on some of the latest telecommunication technologies. The purpose of this research is to implement the fractal communication system using Digital Signal Processing Starter Kit (DSK) TMS320C6713 without using AWGN and Rayleigh channel in order to obtain the ideal performance of the system. From the simulation results using MATLAB7.4. it appears that this communication system has good performance on some channels than any other communication systems. While in terms of implementation by using (DSK) via TMS320C6713 Code Composer Studio (CCS), it can be concluded that thefractal communication system has a better execution time on some tests.

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