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INDONESIA
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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Benthix VR: A Virtual Reality Simulation Application to Preserve Traditional Benthik Game Abas Setiawan; Alvin Satria Nugraha; Hanny Haryanto; Indra Gamayanto
ComTech: Computer, Mathematics and Engineering Applications Vol. 8 No. 4 (2017): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v8i4.4036

Abstract

This research aimed to preserve Benthik traditional game using Benthix VR. Benthix VR used the Virtual Reality Interface Design (VRID) development model. The development phase of the VRID model started from High Level to Low-Level phase. The High-Level Design (HLD) phase consisted of identifying data elements and multiple objects, and modeling component objects. The output from the HLD phase would be input to the Low-Level Design (LLD) phase. The LLD phase was a phase of repetition and fine-tunes from the modeling of several component objects thoroughly. Testing of Benthix VR was conducted on 34 respondents with five assessment aspects. Those were enjoyment, realism, interactivity, usability, and impact. The average result of the questionnaire assessment of all aspects is 3,18824. These results indicate that users feel that Benthix VR is comfortable, realistic, interactive, and fascinating. Moreover, they are also interested in playing Benthik in the real world after using the application.
Enhancing Technopreneurship Project Management System with Coaching and Mentoring Features Stephanus Eko Wahyudi; Kartika Gianina Tileng
ComTech: Computer, Mathematics and Engineering Applications Vol. 8 No. 4 (2017): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v8i4.4135

Abstract

This research aimed to find the system features for remote, synchronous, and asynchronous communication and collaboration among the students. The research design was through an exploratory case study. The data collection method was in-depth interview with experienced supervisors and the subject coordinators. The result of the research is the necessary features to be included in the updated version of the information systems. The various coaching and mentoring features can support subject coordinators, supervisors, and students and allow them to complete the subject on time and in accordance with the standards
Gamification for the Ancient Kingdom of Nusantara with User-Centered Design Approach Yulyani Arifin; Martin Martin; Ryan Ryan; Ryan Dratama
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 1 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i1.4171

Abstract

The purpose of this research was to conserve the history of Nusantara kingdoms with the interesting way for the students. The researchers proposed a method by combining the history of ancient kingdoms in Nusantara with the game. It was done by using gamification with the user-centered design approach. The data collection used questionnaires and literature review. Moreover, the researchers identified the resources by applying the gamification element, developing the game based on user requirement, and evaluating the usability testing. The result shows that the implemented gamification in learning Nusantara can attract the students to learn about history. Based on the result of usability testing that has already been tested using the prototype, it proves that the user interest to learn the history of the ancient kingdom in Nusantara is increased. The results also imply that gamification indeed is one of a suitable method to be used as a medium for students to learn about history, especially the ancient kingdoms in Indonesia.
A Model for Lender-Borrower Trust in Peer-To-Peer Lending Dyah Wahyu Sukmaningsih
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 1 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i1.4287

Abstract

This research examined factors that influenced lender’s trust towards the borrower. The peerto-peer lending platform facilitated lending mechanism between lender and borrower. However, the loan was often considered as an unsecured loan, since there was a lack of traditional financial data. Using literature review, this research analyzed the determinant factor to establish trust between borrower and lender. Based on Elaboration Likelihood Model (ELM), the result of this research proposes a model for trust building between lender and borrower. The model categorizes information to establish trust into hard information, soft information, and social capital.
Performance Maintenance Analysis Using QFD Method: A Case Study in Fabrication Company in Indonesia Wardah Rizlan; Humiras Hardi Purba; Sudiyono Sudiyono
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 1 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i1.4456

Abstract

This research aimed to determine the needs and wants of production and management team to improve the machine and performance maintenance. Voice of the Customer (VOC) method was used to capture the needs and wants of production and management team. Meanwhile, the method of Quality Function Deployment (QFD) was used to translate the needs and wants of production and management to the technical requirement that should be done to improve machine and performance maintenance. Moreover, Total Productive Maintenance (TPM) was a part of technical requirement. From the result, it is known that long breakdown machine, huge inventory of spare part, and high cost of maintenance become the first of priority of maintenance team to achieve customer satisfaction. To develop the performance maintenance, the company should standardize the procedure, identify the critical spare part, reduce the time to purchase critical spare part, and increase lifetime of spare part.
The Development of E-Procurement System for an IT Consultant Company Ong Alexander Ang; Arta Moro Sundjaja
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 2 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i2.4497

Abstract

The research objective was to identify, analyze, and design a procurement information system that was developed by an IT consultant company for their client companies. Data collection techniques used were literature study, field study, document study, learning and trying the existing e-procurement system. Then, it was followed by analysis on general procurement processes using objectoriented analysis with Unified Modeling Language (UML) as tools. The result is a web-based e-procurement application that supports documentation and storage of transaction data. It also generates reports in accordance with company requirements. The main system features are Request Usage Form (RUF), Purchase Request (PR), Purchase Request Summary (PRS), Request for Quotation (RFQ), Quotation, Winner Selection (WS), Purchase Order (PO), and Receive Report (RR). It can be concluded that the developed system can support procurement processes effectively and efficiently, and integrate the inventory and approval system. Integration with inventory system will result in easier stock checking and automated update of goods data in the inventory system. It includes creating item, editing item, and receiving made report document. Integration with approval system will also result in the simpler process of documents approval in the e-procurement system.
Factors Affecting Users’ Acceptance of E-Billing System in Surakarta Tax Office Rino Ardhian Nugroho; Arlyn Dewi Susilowati; Okki Chandra Ambarwati; Arum Pratiwi
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 1 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i1.4621

Abstract

This research aimed to analyze factors that affected the acceptance of e-billing system of Surakarta tax office with Unified Theory of Acceptance and Use of Technology (UTAUT) model. The survey was done on electronic billing (e-billing) system users in Surakarta. Partial Least Square-Structural Equation Modelling (PLSSEM) was used to analyze the users’ intention in adopting e-billing system. The result indicates that two UTAUT variables (performance expectancy and social influence) affect the system usage significantly. Meanwhile, the other variables like effort expectancy and facilitating conditions do not affect e-billing system adoption in Indonesia.
Nonlinear Split-Plot Design Model in Parameters Estimation using Estimated Generalized Least Square - Maximum Likelihood Estimation Ikwuoche John David; Osebekwin Ebenenzer Asiribo; Hussain Garba Dikko
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 2 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i2.4703

Abstract

This research aimed to provide a theoretical framework for intrinsically nonlinear models with two additive error terms. To achieve this, an iterative Gauss-Newton via Taylor Series expansion procedures for Estimated Generalized Least Square (EGLS) technique was adopted. This technique was applied in estimating the parameters of an intrinsically nonlinear split-plot design model where the variance components were unknown. The unknown variance components were estimated via Maximum Likelihood Estimation (MLE) method. To achieve the numerical stability in the iterative process of estimating the parameters, Householder QR decomposition was used. The results show that EGLS method presented in this research is available and applicable to estimate linear fixed, random, and mixed-effect models. However, in practical situations, the functional form of the mean in the model is often nonlinear due to the dynamics involved in the system process.
Maximality on Construction of Ternary Cross Bifix Free Code Mohammad Affaf
ComTech: Computer, Mathematics and Engineering Applications Vol. 10 No. 1 (2019): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v10i1.4716

Abstract

The purpose of this research was to show that ternary cross bifix free code CBFS3(2m+1) and CBFS3(2m+2) achieved the maximum for every natural number m. This research was a literature review. A cross bifix free codes was constructed by using Dyck path method which achieved the maximality, that was non-expandable on binary set sequences for appropriate length. This result is obtained by partitioning members of CBFS3(2m+1) and CBFS3(2m+2) and comparing them with the maximality of CBFS2(2m+1) and CBFS2(2m+2). For small length 3, the result also shows that the code CBFS3(3) is optimal.
Optimizing Production Process through Production Planning and Inventory Management in Motorcycle Chains Manufacturer Shelvy Kurniawan; Steven Sanjaya Raphaeli
ComTech: Computer, Mathematics and Engineering Applications Vol. 9 No. 2 (2018): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v9i2.4723

Abstract

Based on the data, there were still shortages of production from year to year and demand wereunstable in motorcycle chains manufacturer in Indonesia. To overcome these problems, the purpose of this research was to make production planning and inventory control consisting of forecasting, aggregate planning, Master Production Schedule (MPS), and Material RequirementsPlanning (MRP). Forecasting used the additive decomposition method (average of all data), multiplicative decomposition (centered on moving average), and winter method (additive and multiplicative). Aggregate planning used chase strategy, level strategy, and transportation model. Moreover, MRP used lot for lot, Economic Order Quantity (EOQ), and Periodic Order Quantity (POQ) methods. The test shows several results. First, the best forecasting is additive decomposition (average of all data) with MAD value of 3.033,57, MSE with 13.590.490,and MAPE with 10,083%. Second, the best aggregate planning is transportation model with the total cost of Rp7.708.398.390,00. Last, the best MRP method is the lot for lot with total cost Rp7.162.567.653,00.

Page 153 of 159 | Total Record : 1585

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