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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
 66   67   68   69   70 
Penerapan Sociotechnical System pada Data Collection System Tanoto, Dian Felita; Marcellinus, Yonathan; Hidajat, Monica
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 1 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i1.2599

Abstract

Humans and technology are two things that can not be separated. The rate of population growth, which is growing rapidly, proportional to the needs of people in many ways. Each activity and human needs, should be documented, so any activity and human needs can be predicted. Therefore, the data need to be collected and stored properly, effectively, and accuratel. Socio-Technical System is expected to assist and facilitate human in performing the collection and storage of data. Socio-Technical System can be applied by taking into account various aspects ranging from social, psychological, computer science, and technical. Methods of Socio-Technical implementation consists of requirements analysis, system design, implementation, testing, deployment, maintenance. In the testing phase, it should be noted the social and psychological aspects of the user. 
PT. Tira Austenite, Tbk dan Analisis Kinerja Perusahaan Ekspedisi dalam Perspektif Supply Chain dan Metode Analytic Network Process (ANP) Soebandrija, Khristian Edi Nugroho; Kartowisastro, Rizal Herjiwandono
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.v6i2.2269

Abstract

PT. TIRA AUSTENITE, Tbk (PTATbk) and other companies in the field of supply chain require coordination pertaining cross functional and cross collaboration. The mentioned collaboration is required especially for Expedition Company. The performance analysis of Expedition Company, including PTATbk is needed to face the global competition. Company contribution generally, and in particular for Empirical Study toward PTATBK can lead to the problem solving and performance improvement, which covers selecting optimal expedition company and efficient time to dispatch product from existing route to be integrated into the core essence of this research pertaining PTATbk. The mentioned research refers to Empirical Study dan Managerial Implications through books and journals as reference in the Research Methodology. The focus of this researchmethodology is the Analytic Network Process (ANP); criteria of Price and Service; and other important criteria that support the performance analysis within PTATbk. Software ARENA Simulation plays vital role in this research that has the conclusion and recommendation toward problem solving and performance improvement that are translated into benefits versus risks and its form of % and the currency of IDR and/or USD.
Dynamical System of the Mathematical Model for Tuberculosis with Vaccination Ludji, Dian Grace; Sianturi, Paian; Nugrahani, Endar
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.v10i2.5686

Abstract

This research focused on the modification of deterministic mathematical models for tuberculosis with vaccination. It also aimed to see the effect of giving the vaccine. It was done by adding vaccine compartments to people who were given the vaccine in the susceptible compartment. The population was divided into nine different groups. Those were susceptible individuals (S), vaccine (V), new latently infected (E1), diagnosed latently infected (E2), undiagnosed latently infected (E3), undiagnosed actively infected (l), diagnosed actively infected with prompt treatment (Dr), diagnosed actively infected with delay treatment (Dp), and treated (T). Basic reproduction number was constructed using next-generation matrix. Sensitivity analysis was also conducted. The results show that the model comprises two equilibriums: diseasefree equilibrium (T0) and endemic equilibrium (T*). It also shows that there is a relationship between R0 and two equilibriums. Moreover, the disease-free equilibrium point is asymptotically stable local when it is R0 < 1. Then, the disease-endemic equilibrium point is asymptotically stable local when it is R0 > 1. Furthermore, the parameters of ?, ?, and ? are the most important parameter.
Aplikasi Sistem Informasi Penjualan Berbasis Web pada Toko Velg YQ Bernadi, Josef
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 2 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i2.2504

Abstract

The rapid development of information technology gets along with an advance in data processing. Data recording process of sales for company is one of the numerous examples. A system that is able to keep records inventory and profit-loss company is needed to support purchase and sales process. The faster the recording and order process, the more rapid information delivery will be. This research describes factors in making sales information system, payment and reports of YQ wheel store. This research results in a sales information system that facilitates the sales process as well as provides product information of YQ wheel store.
Penerapan Partial Least Squares Pada Data Gingerol Ohyver, Margaretha
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.v1i1.2166

Abstract

Multivariate calibration model aims to predict the expensive measures obtained by using the measures of a cheap and easy. There are several problems that often occur in the model calibration, among others, and multikolinear. To overcome these problems we used partial least squares method (PLS). The study was conducted to apply the PLS method on the data gingerol. Based on research conducted with the two components of the model obtained with the diversity of variable Y at 83.8032% and the diversity of variable X equal to 100%, and obtained for R2 = 83.8% and RMSE = 0.100891 calibration data group and R2 = 84.2 % and RMSEP = 0.199939 for the validation data.
Piranti Lunak Pengujian Struktur Matematika Grup, Ring, Field Berbasis Osp (Open Source Program) Manik, Ngarap Im; Tasman, Don
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 1 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i1.2631

Abstract

This design of a computer software is a development and continuation of the software made on the previous research (2009/2010). However, this further research developed and expanded the scopes of testing more on the Siclic Group, Isomorphism Group, Semi Group, Sub Group and Abelian Group, Factor Ring, Sub Ring and Polynomial Ring; developed on the OSP (Open Source Program)-based. The software was developed using the OSP-based language programming, such Java, so it is open and free to use for its users. This research succeeded to develop an open source software of Java program that can be used for testing specific mathematical Groups, such Ciclic Group, Isomorphism Group, Semi Group, Sub Group and Abelian Group, and Rings, Commutative Ring, Division Ring, Ideal Sub Ring, Ring Homomorphism, Ring Epimorphism and Fields. By the results, the software developed was able to test as same as the results from manual testing.
Aplikasi Diagnosa Gizi Buruk Pada Balita Menggunakan Metode Pembobotan (Studi Kasus: Kecamatan Nusaniwe, Kota Ambon) Kurmasela, Grace Apriliany Presilia; Sevani, Gisela Nina
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 1 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i1.2302

Abstract

The problem of malnutrition in children under five in Sub Nusaniwe Ambon is due to several reasons. Economic problems, lack of knowledge of health problems and lazy to take a child to IHC is a people problem there. In terms of nutrition officers, a problem that occurs is the lack of nutrition officer. This is what can ultimately make the service becomes not optimal. Based on the problems described, it can be used a web-based application that allows one to be developed later. The application store knowledge representation expert or nutritionist toddler, so it can help diagnose malnutrition and nutrient assist officers in performing work optimally, which is represented by the existence of this application. This application uses the inference Forward Chaining, which starts from user input in the form of symptoms experienced, then users give assurance (Certainty Factor) to describe the level of confidence on the symptoms experienced. Output application is whether children under five suffer from malnutrition or the type and value of certainty to be output, advice should intake received toddlers and ways of handling children malnutrition
Analisis dan Perancangan Sistem Basis Data Catatan Waktu Kerja dan Proyek Karyawan pada PT Rekayasa Engineering Sutoyo, Rhio; Marpaung, Franky Hadinata
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 2 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i2.2540

Abstract

The purpose of this research is to analyze and implement a system for recording employee working time and project time, leave request, overtime request, proposal submission, and paperwork revisions registration at PT Rekayasa Engineering. Collecting information is conducted by surveys to the company, interviews with several employees in the company, and examining documents and procedures used by PT Rekayasa Engineering. The database design is created using lifecycle methodology, namely: conceptual design, logical design, and physical design. The result of this research is a database system which is designed and can be used to process operational procedures of the company and to record the working time and project needed by the PT Rekayasa Engineering. Furthermore, this research also produces a prototype application that can be used as a working model for the system. Using the new database system and the application, information needed by the company is fulfilled. Thus, it allows the company to work more effectively and efficiently.
Production of Fish Hydrolysates Protein From Waste of Fish Carp (Cyprinus Carpio) by Enzymatic Hydrolysis Saputra, Dede; Nurhayati, Tati
ComTech: Computer, Mathematics and Engineering Applications Vol 7, No 1 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i1.2201

Abstract

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 ?C 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.
ERP System Evaluation on SOFI XP Based Accounting Module in Software House Industry Mardallena, Shinta; Melen, Melen; Davinelya, Denen; Noerlina, Noerlina
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 3 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i3.2224

Abstract

Accounting module is an important module for a company business process. The roles are in the form of parameter calculation of profits, losses and financial performance based on transaction, which basically is a real-time reporting system. The amount of company needs on accounting indicates that the accounting is one of the resources which support the establishment of a company. Thus, the company constantly improves the accounting performance, especially in handling of receivables, debts, and cash transactions. Evaluations which were performed at SOFI XP-based ERP system aims to provide a solution to a problem that was discovered during the analysis of the system needs. This evaluation was done in two stages: by collecting data and analyzing the system that running in the company. By doing this evaluation, the documentation of system performance and the solution for problems that were found in the company can be generated.

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