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
1,585 Documents
Perancangan Case Tools untuk Diagram Use Case, Activity, dan Class untuk Permodelan Uml Berbasis Web Menggunakan HTML5 dan PHP
Mohammad Subekti;
Lukman Lukman;
Donny Indrawan;
Ganesh Putra
ComTech: Computer, Mathematics and Engineering Applications Vol. 5 No. 2 (2014): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v5i2.2199
This study is intended to generate an application tools (CASE tools) that allows a software developer to create a modeling system design using Unified Modeling Language (UML), especially in making use case, activity or class diagrams more quickly and easily. The tools developed will also facilitate developers in doing UML modeling by accessing the network through a web-based internet application. With the web-based applications, the users require only a browser and an internet connection to use this application. This application also helps developers to understand of how to make UML diagrams correctly and good. In this research traditional methods Scrum model is used. Scrum method is Agile methods that is a process to cultivate software easily and can be developed in accordance with the development of information technology. Scrum is using empirical methods or in other words every stage in it involves inspection and adaptation.
Data Warehouse Design with Kimball Method: Case Study of Fahrenheit Manufacturing Systems
Widianty Widianty
ComTech: Computer, Mathematics and Engineering Applications Vol. 6 No. 4 (2015): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v6i4.2200
Competition in the business world that increasingly stringent requires management to make decisions accurately and quickly. It is also felt by Farhenheit as entrepreneurs. To achieve thier forte in competing in theglobal competition, he needs systems like strategic decision makers which is up-to-date reliable and fast. Then the solution of area manufatur datawarehouse design is necessary to support the above objectives,i.e. : the right and fast decisions. However, Fahrenheit only has ERP as their core system currently and they do not have management support system. They have some difficulty to understand some problems and do better analysis. There are some datawarehouse development methodologies. Methods that will be used for the development of datawarehouse design is Kimball Method. Kimball method was chosen because of its development process that follows the business process is very suitable for the development of datawarehouse gradually to a company.Kimball's method gives a mart for the related business processes.This study is conducted by interview and survey from several senior managers and directors in Fahrenheit to know about their requirement and how they do analysis currently.
Production of Fish Hydrolysates Protein From Waste of Fish Carp (Cyprinus Carpio) by Enzymatic Hydrolysis
Dede Saputra;
Tati Nurhayati
ComTech: Computer, Mathematics and Engineering Applications Vol. 7 No. 1 (2016): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v7i1.2201
Fish Protein Hydrolysates (FPH) is the mixed products of polypeptide, dipeptides, and amino acid. It can be produced from materials that contained of protein by acid reaction, base reaction or enzymatic hydrolysis. The objectives of this study were to study the production of FPH from fish carp meat at post rigor phase and viscera by enzymatic hydrolysis, to determine the specific activity of papain enzyme, and to determine the solubility of FPH. Capacity of fish hydrolyzing can be identified by analyzing the content of dissolved total nitrogen (NTT) compared with nitrogen total ingredient (NTB) in order to get the value of total soluble nitrogen/total nitrogen material (NTT/NTB). The hydrolysis processes were carried out in 0,26% (w/v) papain, 60 οC for 3 hours. The result showed that the specific activity of papain enzyme was about 3.28 U/mg. Solubility of FPH by comparing NTT/NTB was about 0.29% (fish meat) and 0.40% (fish viscera). Proximate test of protein content of fish meat was 18.34 ± 0.04 (g/100 g); while viscera was about 0.95±0.04 (g/100 g). The result indicated that product waste of fish carp had potential as a major of source of FPH.
Fractal Communication System Using Digital Signal Processing Starter Kit (DSK) TMS320c6713
Arsyad Ramadhan Darlis
ComTech: Computer, Mathematics and Engineering Applications Vol. 6 No. 4 (2015): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v6i4.2202
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.
Evaluasi Sistem Informasi Penjualan PT SPNS
Anderes Gui;
Sanyoto Gondodiyoto;
Japari Japari
ComTech: Computer, Mathematics and Engineering Applications Vol. 1 No. 1 (2010): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v1i1.2203
The purpose of this paper is to identify and analyze problems that occur in information systems sales PT SPNS. It also serves to control the management and control of applications running well so it can produce accurate information for decision making. The method used is book study method and field study. Study was done by reading library books, scientific papers and other sources, while the field study was done by observation, interviews, and questionnaires. The result of the evaluation is derived from the respective strengths and weaknesses - each control. Weaknesses are found, the findings presented in the form of a matrix that contains the findings and recommendations as a matter of risk remedial action. Conclusions obtained from the audit for security control, operations, limitations, input and output is good enough because it can satisfy and support the sales activities of PT SPNS.
Arrangement of Players Position in Soccer Using the Technique of Naive Bayes
Gusti Made Trisetya Putra;
Muhammad Rusli
ComTech: Computer, Mathematics and Engineering Applications Vol. 6 No. 4 (2015): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v6i4.2204
In the modern soccer era, soccer is already considered as an entertainment, even modern soccer already become as an industry or a business that considered can bring a great profit to the club owner. One of the most important factor in building a team is young age soccer player development. Right young age soccer player development method, can be very helpful in establish a good team. A professional team must have acoach, for the first team or junior team. The duties of a coach is determine a right position for soccer player in the game, this duties sometimes make a coach is hard to making a right decision. This research will discussabout how to design a decision support system for determine soccer player using naive bayes technique. Data mining used naive bayes technique for find a prediction for soccer player based on the player skill test result. From this research result, it can be seen that by using decision support system using data mining with naive bayes technique can be help coach performance in determine position for soccer player especially for young age soccer player development so that can help coach in the making right decision effectively and efficiently.
Evaluasi Sistem Informasi Penggajian Pada PT XYZ
Hari Setiabudi Husni;
Purwoko Purwoko;
Antonius Antonius
ComTech: Computer, Mathematics and Engineering Applications Vol. 1 No. 1 (2010): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v1i1.2205
The purpose of this study was to identify problems and weaknesses in the payroll information system, providing recommendations to reduce the risk of existing problems and produce audit reports for companies. Research method used is through literature study, interviews and observation. Audit method used is the method of auditing around the computer. Analysis was performed by analyzing the findings of problems, risks, and recommendations on the findings of the problem. After doing research, we conclude that there are still some weaknesses in management control and application control. But companies should be more focus on the weaknesses inherent limitations in controlling the application and control the output. Based on these findings, suggested that the company to rectify existing weaknesses and enhance control over payroll information system.
Evaluasi Sistem Informasi Sumber Daya Manusia Pada PT XYZ
I Gusti Made Karmawan;
Tangkas Udiono;
Abdul Haris
ComTech: Computer, Mathematics and Engineering Applications Vol. 1 No. 1 (2010): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v1i1.2206
The research objective was to evaluate the procedures and internal controls of Human Resource Information System XYZ. To that end, the author conducted the examination, collecting, previews and documenting the evidence that supports the information systems, so that it can find problems that occur in information systems and measure risk on internal controls to produce recommendations that can be considered. To support the research, the research uses a library, where the data obtained by reading a book and browse the website in accordance with the research are discussed. And with a field research method, which was obtained through a check list, interview and observation. Results of evaluation on the current information system, gives the conclusion that the current system has been implemented according to the company the current procedure, but found few risks to the internal controls within them.
Fatigue Risk of Long-Distance Driver as the Impact of the Duration of Work
Rida Zuraida
ComTech: Computer, Mathematics and Engineering Applications Vol. 6 No. 3 (2015): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v6i3.2207
Studies on the driver's fatigue, must focus on at least two things: the time-of-day that affect by circadian factors, and time-on-task. This paper discusses the risk level of driver fatigue, which generally have to drive in a long duration or more than 4 hours. The risk of fatigue was assessed using Fatigue Likelihood Scoring (FLS) by Transport Canada. Based on interviews with 24 inter-city bus drivers, 18 of the 24 drivers have a very high risk of fatigue that characterized by FLS scores greater than 20, while the rest have a high risk driver that characterized by FLS value greater than 10. A high risk of chronic fatigue that experienced by most of drivers caused by working hours which is more than 36 hours in a week, the duration of the shift of greater than 8 hours a day, lack of time off, the amount hours of driving at night, and the amount of time off.
Analisis dan Perancangan E-CRM Pada Perusahaan Advertising
Henny Hendarti;
Suryanto Suryanto;
Otto Fikri Septianto
ComTech: Computer, Mathematics and Engineering Applications Vol. 1 No. 1 (2010): ComTech
Publisher : Bina Nusantara University
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DOI: 10.21512/comtech.v1i1.2208
The purpose of this study was to analyze the needs and customer satisfaction in service advertising and design an attractive site customer satisfaction, user friendly and dynamic. Ways to do research using analytical method, data collection method, and design method. The collection of data and information were done through a field research. The results obtained from this research is the design of e-CRM applications (Electronic Customer Relationship Management) which aims to produce an interactive Internet-based applications for any strategy to enhance relationships with existing customers, increase new customers and increase profits from the sale. In addition, companies can thrive in providing quality service to our customers, which in turn can increase its profit. The conclusion of this research is to create a dynamic website, which is useful for providing better services to consumers, thus increasing profits for customers and companies.