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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
 132   133   134   135   136 
Pengukuran Panjang Simulasi Retak Permukaan dengan Teknik Perambatan Gelombang Ultrasonik Permukaan Ashadi Salim
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.v2i1.2725

Abstract

The length measurement of the surface crack simulation using surface ultrasonic wave method is performed for surface crack length of 5, 10, 15, 17.5, 20 and 22.5 mm. Each crack has the orientation of 22.50, 450, 67.50, and 900 against the surface of the sample. The method is similar to the transmission technique, where the transmitting and receiving probes are arranged face-to-face against the crack mouth. The surface wave pulse is high enough to be distinguished from the pulse of the coming waves as the result of mode conversion that occurs from the crack tip. The deviation of the measurement of the length was 8% in the average. 
Perancangan Program Aplikasi Penentuan Portofolio Investasi dengan Metode Dempster Shafer Fuzzy-Analytical Hierarchy Process Rojali Rojali; Syaeful Karim; Edgar Gerriano
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. 
Hubungan Deret Bertingkat Berdasarkan Bilangan Eulerian dengan Operator Beda Alexander Agung Santoso Gunawan
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.v2i1.2727

Abstract

Rank series defined as: is a generalization of the fixed rank series (the sum of powers), in which its closed solution has been found empirically by Jacob Bernoulli in 1731. This paper will explore the relationship between rank series and differential operator. To see this relationship, examples for the case m = 1.2 and α = 1.2. are provided. 
Uji Homogenitas dengan Sebaran Khi-Kuadrat dalam Evaluasi Suatu Sistem Iwa Sungkawa
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.v2i1.2728

Abstract

This paper discusses the application of khi-square distribution in homogeneity of variance test on the control of a system used in a process considered normally spread with a mean of and a variance (degree of homogeneity) of . It is necessary to test the hypothesis statistically Ho: with the average μo value is unknown, and the statistic used is Khi-square distribution. On this occasion, an evaluation is executed upon a "Matsuyama" stabilizer (standard volt single phase (L)) to be used in Srengseng, Lenteng Agung, South Jakarta. Based on the test results of upon the variance with average standard voltage 220 volt, the electricity consumers in Srengseng are encouraged to use the stabilizer for household appliances that require voltage stability. By examining the voltage fluctuations at the location and stabilizer conditions (input range), the test result carried out through variance similarity test states that “Matsuyama” stabilizer is eligible and applicable in the area. 
Peran Media Sosial di Internet pada Penerapan Proses Knowledge Management Sartika Kurniali
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.v2i1.2729

Abstract

Knowledge management application on the internet keeps growing. It happens because the Internet offers new opportunities to use the knowledge assets, defines and spreads type of new knowledge assets, even to outside the organization. On the internet, appear social media that enable internet-based knowledge sharing system. As we know social media is not something new and has undergone many changes that allow for more interactive interaction and much greater number of users now. The research results showes that knowledge management and social media have nearly similar components. This allows the role of social media on the knowledge management application, such as collaboration tools coming with a clear business purpose. 
Perancangan Program Aplikasi Deteksi Iris Mata untuk Absensi Karyawan Menggunakan Metode Gabor Wavelet Zahedi Zahedi; Eka Janitra
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.v2i1.2730

Abstract

To take the employees’ absences in a company, a variety of invented tools or technologies are and already used, for example, attendance cards, fingerprints attendance tool, and attendance tool that uses facial recognition. Attendance tool with a facial recognition uses iris recognition of those employees. Iris code has many properties that hard to forge. Thus, the detection and iris recognition is one of the most secure and accurate for identification. 
Perancangan Model Data Warehouse dan Perangkat Analitik untuk Memaksimalkan Proses Pemasaran Hotel: Studi Kasus pada Hotel Abc Eka Miranda
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.v4i1.2731

Abstract

The increasing competition in hotel business forces every hotel to be equiped with analysis tools that can maximize its marketing performance. This paper discusses the development of a data warehouse model and analytic tools to enhance the company's competitive advantage through the utilization of a variety of data, information and knowledge held by the company as a raw material in the decision making process. A study is done at ABC Hotel which uses a database to save the transactional record. However, the database cannot be directly used to support analysis and decision making process. Based on this issue, the company needs a data warehouse model and analytic tools that can be used to store large amounts of data and also potentially to gain a new perspective of data distribution which allows to provide reporting and answers of ad hoc users questions and assist managers in making decisions. Further data warehouse model and analytic tools can be used to help manager to formulate planning and marketing strategies. Data are collected through interviews and literature study, followed by data analysis to analyze business processes, to identify the problems and the information to support analysis process. Furthermore, data warehouse is designed using analysis of records related to the activities in hotel's marketing area and data warehouse model. The result of this paper is data warehouse model and analytic tools to analyze the external and transactional data and to support decision making process in marketing area.
Peran Model Fisik dan Digital dalam Perancangan Arsitektur Albertus Prawata
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.v2i1.2732

Abstract

An architectural design process is a process to design an architectural form involving a lot of aspects such as scale, spaces, functions, time and material. The ultimate objective is to create a complete design into a visual media to be presented and actualized in a physical form on a certain site or location. Physical and digital models are media that can be used to visualize an architecture design process from the conceptual step to the final design. Both media have important aspects in design process, as well as able to give design solutions. This article explains the use of physical and digital models with their own characteristics in architectural design process; observes any information from a physical model that can be used and transferred to a digital one; and provides some information about when the physical model and digital model should be used best during the architectural design process. 
Perancangan Model Hirarki Keputusan dan Sistem Basis Data pada Sistem Informasi Sumber Daya Manusia Sub-Sistem Rekrutmen dengan Metode Berjenjang Eka Miranda; Julisar Julisar
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.v4i1.2733

Abstract

Management of employees as a resource is essential to enhance the effectiveness of employee’s performance, and the process efficiency of for organizations or companies. Possible problems related to the management of human resources need to be diagnosed which one to be solved as a priority. The problem is how to design the decision making model to help the Human Resource Department in determining the criteria for recruitment which can be used to take decisions on recruitment of human resources. This research aims to design a model of decision making systems and databases to support accuracy of decision making in human resource information system to create high loyalty and productivity so that the productivity of the company can be further improved. The research is divided into two phases: collection as well as analysis of data and design model. Specifically target to be achieved in this research are to identify the critical success factors of the model of decision making system for recruitment and develop models of decision-making system. The results obtained from this research are hierarchical decision models using analytical hierarchy process and its database design for the recruitment sub-system of human resource.
Metode New Information Economics untuk Menganalisis Manajemen Departemen Teknologi Informasi PT. Teijin Indonesia Fiber Corporation (TIFICO), Tbk. Tangerang Hudiarto Hudiarto; Hernanda Raditya; Cecep Supriyatna; Muhammad Ichsan Amrin
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.v2i1.2734

Abstract

PT. TIFICO, Tbk., Tangerang is a company engaged in the textile industry that produces fiber and yarn. It has several application systems, infrastructure, services, ongoing management and application projects to be developed to improve its business processes. The company’s management wants to discern the interest and suitability level of each applications upon the company needs and want to know whether the issued investments matches up the impact and benefits to the company. The author proposes to analyze the running application system and IS/IT project plans using only 4 tools of the New Information Economics method: strategic demand/supply planning, innovation, prioritization and alignment. The results obtained is information about investment strategy of the ERP system Oracle E-Business Suite implementation and project plans to discern which IS/IT is more important to be developed and which one should be ignored, so that the company can allocate the investments to the IS/ IT projects that best support the company's operation. 

Page 134 of 159 | Total Record : 1585

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