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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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Studi Literatur tentang Faktor-Faktor yang Berpengaruh dalam Implementasi Enterprise System pada UKM Heripracoyo, Sulistyo
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.v4i2.2535

Abstract

Small and Medium Enterprises (SMEs) are one of the pillars of Indonesian economy since they contribute to the national Gross Domestic Product in a large number. This study discusses some of the articles to determine the factors that influence the implementation of enterprise applications systems, business intelligence (BI) and cloud computing. SCM, ERP, CRM are applications that provide the benefits of efficiency and effectiveness to the organization that uses and implements them. SCM, ERP, CRM and Business Intelligence needs to be implemented to SMEs in order to improve their performance to compete efficiently and competitively. In addition, SMEs can try cloud computing services by implementing and integrating those applications, although obstacles may be considerable.
Penerapan Sistem Personalisasi Akun pada Admisi Online Binus University Iskandar, Karto; Jefriyanto, Jefriyanto; Giovanni, Halena; Gunawan, Candra
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 1 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i1.2767

Abstract

This research purpose is to make easy the registration process of new students by personalizing the account page on admission online. Therefore, each user can manage their own needs and recognize the steps that must be taken to be a BINUS student. Analyses are performed towards the current working system and issues related to the system. Further is performing finding references related to the problem through literature study. Then, creating a UML diagram of the system design, user interface and database. Next is the programming phase and evaluation of the application . The results obtained is an online admission application with a personalized login page. It can be used to make easy the registration of new student or related issue at the many insttutions of Binus. It is suggested to create the mobile version of online admission for the future development.
The Improvement of Flip (2,2) Visual Cryptography Images Using Two Key Images Dewi, Ratna; Sari, Putri Kartika
ComTech: Computer, Mathematics and Engineering Applications Vol 7, No 3 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i3.2501

Abstract

The Flip (2, 2) Visual Cryptography (FVC) is one of the techniques used to encrypt the two secret images into two dual purpose transparencies. The two transparencies can be sent to the objective person. The first secret images can be obtained by stacking the two transparencies and the second secret images can be obtained by stacking the one transparency with the flipping other transparency. Unfortunately, the result decryption processes still have noise and the quality of decrypted secret image is not as same as original secret image. This article proposed the new algorithm to improve the quality of decryption secret image. In this process, the two secret images from decryption process were compared with the two original secret images. The different values of each pixel, which was counted from subtraction of decryption image and original secret images, will be inserted to the two key images. The experimental results of this improvement have a good similarity. The noise in decryption process can be eliminated so the two secret images reconstruction similar to the original secret images.
Akuisisi dan Budaya Knowledge Sharing Putri, Nuril Kusumawardhani Soeprapto
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 1 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i1.2795

Abstract

Large companies which are experiencing barriers in innovation often take a radical step to acquire knowledge, namely acquisition. Though innovation is not the only reason, acquisition will result in the company wishes to achieve competitive advantage affected by the creation of ideas, creativity and innovation. The three points can be achieved more easily when the knowledge sharing within the organization / company runs well. However, the acquisition maybe impacts as a counter-attack for the knowledge sharing culture both in the acquisitor and and company which obtains the acquisition. Therefore, a key to succeed the acquisition is a sharing culture among individuals within a company that runs well or even better. Individuals from the acquisitor and those of the company that obtains the acquisition can adapt to each other and have confidence in order not to hinder them to share knowledge. This study discusses in detail the potential impacts of an acquisition upon a knowledge sharing culture in a company. 
Analisis dan Perancangan Sistem Informasi Penjualan dan Persediaan pada PT Nur Islami Tour and Travel Titan, Titan; Luhukay, Devyano; Kurniawan, Yohannes
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.v3i1.2444

Abstract

The analysis and design of sales and inventory information system performed at PT Nur Islami is aimed to identify the organization needs to control and manage the data and information of operational transaction. The result will be used as a base for developing a new computerized system. The activity in analysis and design is focused in sales and inventory activities, which is the main core of the organization. These needs will be documented using unified modeling language. The C# and SQL Server 2005 will be used to design and develop the application and database for fulfilling the needs. This information system will ease the organization in doing their activity in selling and monitoring the stock. On the other hand, it will also minimize the data lost, which is usually caused by the conservative storage mechanism of transactional data.
Model Terintegrasi Penjadwalan Batch dan Pm dengan Kriteria Minimalisasi Biaya Simpan, Setup dan Pm pada Mesin dengan Increasing Failure Rate Zahedi, Zahedi
ComTech: Computer, Mathematics and Engineering Applications Vol 4, No 1 (2013): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v4i1.2690

Abstract

Development of today's manufacturing systems leads to the getting shorter in product life cycle, more variety of products, as well as increasing in consumer demand for quality and timeliness. Thus the accuracy and speed of decision-making within the manufacturing system becomes important. This paper proposes an integrated model of batch scheduling and preventive maintenance scheduling, in assumption no non-conforming parts to the criteria of minimizing the total saving cost, setup cost, preventive maintenance cost in minimizing the actual flow time on a machine with increasing failure rate. An example is provided to show how the model and algorithm work.
Tantangan Pewirausaha di Bidang TI: Bagaimana Menghasilkan Keuntungan dari Ide? Studi Kasus Pada PT “IPS” (Payment Gateway) Lisanti, Yuliana
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.v5i1.2584

Abstract

It was not easy to start a business, let alone to run it. However, the spirit and ideas of the three founder of PT ?IPS? has successfully created an innovative business that is a payment gateway to help sellers and buyers to make purchases online. However, there is a major problem for many IT entrepreneurs faced by PT ?IPS? that is how to gain profit from the business. PT ?IPS? hopes to make a profit from the efforts undertaken By understanding customer behavior and how other business people can get profit from the business relating to technology, such as improving customer value, distinguishing between types of member and amenities, providing "ignored" biaya by the user and working with other business people in the same field.
Best Practice Service-Oriented Architecture (SOA): Recommendation and Tips Astriani, Maria Seraphina
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 2 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i2.2827

Abstract

Companies that have many applications always deal with application integration problems. For the of company necessity, they often yearn for information that an application can be used by other applications. Often a small portion of data from another application is needed in order to complete and support other business functions. They require an architectural approach that can bridge the information between applications. SOA (Service-Oriented Architecture) offers manufacturing services around existing business functions. Applications that wish to communicate with other applications can use the services to achieve business goals. This article will discuss recommendations and tips for implementing SOA best practices in banking. 
Penerapan Sistem ERP dalam Membuat Project Feasibility, Project Status dan Project Monitoring pada Perusahaan di Bidang Kontraktor Alianto, Hendra; Wijaya, Santo Fernandi
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.v4i2.2481

Abstract

ERP (enterprise resource planning) is an integrated information system to support the core business activities of an organization. ERP system will help the business unit related to data and information sharing, cost reduction, and improvement of business processes, which will result in an increase in the work (productivity) to become more efficient and effective. However, practically some organizations have problems on running ERP system, some even fail. Therefore, a strategy is needed to help the information systems project. Making project feasibility, project status and project monitoring ERP system can be used as a guide in the design of the ERP program applications to become more user friendly and suitable for the organization needs. The ERP system applied to a contracting company will increase productivity and achieve the level of effectiveness and efficiency of the company's operations. Through strategies in making project feasibility, and status monitoring with ERP system will provide a positive contribution to the development and objectives of the company, so as to improve the effectiveness and efficiency in the processing operations.
Perancangan Program Aplikasi Penentuan Portofolio Investasi dengan Metode Dempster Shafer Fuzzy-Analytical Hierarchy Process Rojali, Rojali; Karim, Syaeful; Gerriano, Edgar
ComTech: Computer, Mathematics and Engineering Applications Vol 2, No 1 (2011): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v2i1.2726

Abstract

Investment is very popular nowadays to gain profits of the available property. Many investment portfolios are available but there are still a handful of users who have not been able to determine the best type of investment. Surely it would be very unfortunate if the property can not be well invested. Therefore, it is necessary to propose another alternative method that can determine the existing investment portfolio. This method begins by a process which details existing factors in every investment portfolio. Then, it takes intuition properly to give weight to the initial calculation. After that, it takes a Fuzzy concept as a tool to provide a numerical weight to each of the parameters. The final step is weighting process using Dempster Shafer method. With the use of three basic concepts, investors are expected to obtain objective and optimal computing results related to the profitable investment portfolio selection. 

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