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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Convergence Society
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Journal DOI :
Korea Convergence Society
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Volume & Issues
Volume 2, Issue 4 - Dec 2011
Volume 2, Issue 3 - Sep 2011
Volume 2, Issue 2 - Jun 2011
Volume 2, Issue 1 - Mar 2011
Selecting the target year
A Study on Informatization in the Machinery Industry
Choi, Shin-Hyeong ; Han, Kun-Hee ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 1~5
In this paper, we investigate and analyse companies of the mechanical industry, which introduces ERP and then alter productivity, organizational culture. Through the survey and field investigation about these companies, we can know the utilization and dependence on ERP considerably higher, but the problem with the early introduction and maintenance costs due to frequent turnover, and training and support for ongoing maintenance was a problem.
Analysis of DOP using Radio-navigation Transmitter
Lim, Joong-Soo ; Chae, Gyoo-Soo ; Kim, Min-Nyun ; Kim, Young-Ho ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 7~12
In this study, we investigate on location optimization algorithm of radio-navigation transmitter. The DOP for an each receiver is decided by the location of a transmitter. We provide various results that give an optimum DOP according to propagation characteristics. We use the DTED(Digital Terrain Elevation Data) to improve the accuracy.
Design of the Mail Protocol with Perfect Forward Security
Shin, Seung-Soo ; Han, Kun-Hee ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 13~19
When the existing mail system is attacked by the third party, its content is exposed fully. To solve this problem, designed is the mail encryption system which can send and receive mail safely by the sessionkey. The mail receiver opens encrypted mail with the session key. In the traditional mail system, the server administrator can view mail content. However, in the proposed protocol, the server can only save mail as encryption/decryption is applied. Also, the ARIA encryption algorithm is used in encryption/decryption for better safety, and fast XOR operations are used to reduce the amount of operations.
A Study on Development Methods of Serious Game
Kim, Kyoung-Nam ; Lee, Myoun-Jae ; Kim, DaeYoung ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 21~26
Currently, Many serious games which combine original purpose of each fields with fun of a game has been developing in the country, abroad. This paper describes problems of development of serious game which based on the paper, analyzed development status of serious games in the country and abroad, proposes development methods. This paper should help to growth serious games industry.
The Development of Decelerating Motor of Electronic Power Steering
Lee, Jeong-Ick ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 27~34
This study is making a product for the development of one process worm wheel of making a shape for gear for worm wheel without hobbing manufacturing process. Because of removing a hobbing process, plastic worm wheel for increased productivity and equivalent quality is produced in the result. As the result, this product is selling to Hyundai Mobis, Mando, TRW, KOYO/NSK/Showa(Japan), Delphai(America). The core technology and different strategy are as follows. The technology protection for molding of worm whee is currently patent process "Molding process of helical gear(No. 10-2008-0105908). Further patent procedure for "molding system for positioning decision of inserting boss is currently prepared. As gear molding procedure in hobbing machine without gear machining procedure, most of all, core development technology which is making a gear tooth is main topic. So that, in case of currently developed worm wheel, because core and mold base are not developed in the first procedure, gear is machining in hobbing M/C as the second procedure. In the later, patent for mold base structure will be prepared in this study results.
Operating Characteristics of Protection Coordination Devices in Distribution System interconnected with Distributed Generation
Kim, So-Hee ; Ji, Seong-Ho ; Kim, Sun-Young ; Rho, Dae-Seok ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 35~45
Recently, with the increasement of the interest about global warming, pollutions, and so on, a number of distributed generations(DGs) such as photovoltaic(PV) and wind power(WP), are interconnected with distribution systems. However, installing of DGs makes power flow changes such as directions, one-direction to bi-direction, and increasing/decreasing of fault current. Therefore, it may cause the critical problems. This paper proposes an evaluation algorithm for bi-directional protection coordination and presents an evaluation system for protection coordination based on this algorithm. Additionally, the result shows that the existing method may cause critical problems, and also the effectiveness of proposed method is verified.
A Study on Fault Characteristics of DFIG in Distribution Systems Based on the PSCAD/EMTDC
Son, Joon-Ho ; Kim, Byung-Ki ; Jeon, Jin-Taek ; Rho, Dae-Seok ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 47~56
Korea Ministry of Knowledge Economy has estimated that wind power (WP) will be occupied 37% in 2020 and 42% in 2030 of the new energy sources, and also green energies such as photovoltaic (PV) and WP are expected to be interconnected with the distribution system because of Renewable Portfolio Standard (RPS) starting from 2012. However, when a large scale wind power plant (over 3[MW]) is connected to the traditional distribution system, protective devices (mainly OCR and OCGR of re-closer) will be occurred mal-function problems due to changed fault currents it be caused by Wye-grounded/Delta winding of interconnection transformer and %impedance of WP's turbine. Therefore, when Double-Fed Induction Generator (DFIG) of typical WP's Generator is connected into distribution system, this paper deals with analysis three-phase short, line to line short and a single line ground faults current by using the symmetrical components of fault analysis and PSCAD/EMTDC modeling.
Development directions of voluntarism in University students
Kim, Chang-Gyu ; Lim, Mi-Ran ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 57~65
Voluntarism as an ethics standard for the human race in the 21st Century, suggest to us partical and realistic measures as well as an ideological framework which can solve the problems in the national area. Volunteer activities in the society by university and university students are very important within the nation, provincial communities as well as in the country area. This study focuses on voluntary activities of university students of all the local university on gyungsang buk do after looking in to the present situation of voluntarism and issues and seeks to search into the policy issues that university students voluntary activities should be directed towards. For the active execution of college students voluntary activities, it is necessary to establish partnerships between local communities and university, policy support from the university authorities, program development and expansion of the boundaries of volunteer avtivities, and connections between university Health voluntary health center.
Mannequin Simulation in the Health Science
Kim, Jee-Hee ;
Journal of the Korea Convergence Society , volume 2, issue 2, 2011, Pages 67~71
The aim of this study is to review the mannequin simulation. The mannequin simulation is widely used in the education of paramedic, fire fighter, nurse, dental school, and anesthesia. The wide scopes of mannequin simulation comprise the history, evolution, and application to problem-based learning.