• Journal of the Korean Society for Precision Engineering
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• v.16 no.10
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• pp.109-117
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• 1999

In this paper, a direct adaptive control, based on Lyapunov Function Candidate, is applied to a nonlinear Gunner's Primary Stabilized Head Mirror system to derive a parameter adaptation scheme; furthemore, a nonlinear sliding mode control, but also compensating the error in identification of the parameters which are even varying of have uncertain values. The performance of the adaptive controller is determined by the tracking ability to a desired model under some disturbances and the slowly varying parameters of the system. Both adaptive scheme and sliding mode play an important fole in the improvement of the nonlinear system control.

• 한국정보교육학회:학술대회논문집
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• 2005.08a
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• pp.193-201
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• 2005

제 3의 혁명이라 불리고 IT 분야의 새로운 패러다임으로써 부각되는 유비쿼터스 패러다임의 도래에 따른 컴퓨터 교육의 방향을 모색함과 동시에 유비쿼터스 패러다임을 반영한 컴퓨터 창의성 개발 과정을 설계하여 적용해 보고자 한다. 유비쿼터스 패러다임을 반영한 컴퓨터 창의성 개발은 창의적인 마인드와 사고를 지닌 미래 유비쿼터스 시대를 담당할 창의적인 인재를 육성하는데 그 목적이 있다. 따라서 유비쿼터스 시대의 IT 동향과 발전 방향을 이해하고, 실제 유비쿼터스가 구현되는 생활 모습을 통하여 우리 생활과 유비쿼터스와의 관계를 더욱 창의적인 시각에서 바라볼 수 있도록 하는데 역점을 두었다. 또한 미래의 유비쿼터스를 예견해 보는 과정을 통하여 제기되는 여러 가지 문제를 찾고 그 해결 방안을 모색해 봄으로써 학습자 자신이 미래 유비쿼터스 시대를 만들어 나가는 주역임을 스스로 깨닫도록 하는데 역점을 두어 교육 과정을 설계해 보았다.

• Culinary science and hospitality research
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• v.8 no.1
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• pp.23-41
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• 2002

Ordinary, the hotel Career Development that cooks are hi red, then OJT and evaluation, disposition. It means that cook to set in order with licence and to carry-out effect But it is not continue forever about the job demand, attitude, ability of cook. The Executive Chef and depart of career development have to plan for problems now and a long time of time to cooks. Demand of cook career development are sociality and economical. Because the hotel needs a high-grade cook for keep competitive in changing surround. internal resources are more effect ive when require without delay man power than hire urgent. It is not only lack career development to cook, probably face up to retirement at one time and foment social order but also cook lose their a right to labor. Cook supports their family and grow, economic base for ethical by labor, so have to carry their point. In addition the domestic five stars hotel's career development structure are very simple and infirm, so it cause stagnation to position, lead to negative vision and show a drop in efficiency. Therefore the hotel must investment about Career Development.

• Journal of the Korean Society of Safety
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• v.29 no.2
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• pp.82-88
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• 2014

Recently, the concepts of community adaptation and ability to restore have been emphasized in order to evaluate disaster vulnerability and risk exposure level. In particular, the concept of disaster management that voluntarily takes measures prior to disaster situations has been introduced based on participatory disaster management that the community should take responsibility for one's own safety. This study diagnosed the community response capability on four model areas such as Goseong-gun and Gimhae-si, Gyeongsangnam-do and Gimcheon-si and Bonghwa-gun, Gyeongsangbuk-do and represented the Community Preparedness Indicator(CPI) for each region as a result.

• Journal of Engineering Education Research
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• v.20 no.1
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• pp.45-52
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• 2017

This paper deals with the method how to organize a team that is effective for developing teamwork skills. In recent engineering education, classes requiring team activities are getting a lot according to the increase of the engineering design classes and PBL based teaching subjects. For an effective team activity, team organization is very important because the team has to have the enough man-power to perform the task need to be completed. Nevertheless, most of all classes that need team activities, team organization is considered a little. Thus, we could see the problems such as the conflict between team members and the lack of technical ability. To overcome the problems, we proposed MBTI based team organizing method that may improve teamwork skills of students.

• Journal of Advanced Marine Engineering and Technology
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• v.35 no.7
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• pp.966-973
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• 2011

Power distribution onboard vessel is typically configured as ungrounded system due to the ability to continuously supply electric power even when an earth fault occurs. The impedance connections between 3 phase power lines and hull cause the line-to-hull voltages to become unstable and increased in case the impedances are unbalanced, bringing the situation susceptible to electric shock and deterioration of insulation material. Also the line-to-hull voltage can reach to a certain maximum value in the steady state depending on the distributed capacitances and grounding resistances between lines and hull. This study suggests how to find and calculate the maximum line-to-hull voltage in view of magnitude and phase angle based on the vector diagram.

• Journal of Industrial Technology
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• v.21 no.B
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• pp.31-35
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• 2001

The phase forming ability and formation enthalpies(${\Delta}H$) of Si-M(M = Ti, Cu, Ni, Zr) compound alloys were predicted by Miedema's model. The silicon compound alloys were synthesized by mechanical alloying and then characterized for the phase formation by X -ray diffraction. The electrochemical properties as the anode materials for lithium ion batteries were investigated using a galvanostatic method. It appears that the electrochemical characteristics of Si-M alloys can be predicted from the thermodynamic criteria for the phase formation using the Miedema's model.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.420-424
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• 2008

The new MOV(motor-operated valve) diagnostic system MOVIDS(MOV intelligent diagnostic system) was developed. Its remote diagnostic methods with high accuracy have improved the applicability. This enables the diagnostic tests and the evaluations of many MOVs not only at the valves but also in remote places like MCCs(motor control centers). The remote diagnostic ability of the new system reduces the cost and the man power for diagnosing MOVs and eliminates the danger of the toxic or radioactive environments to which workers might be exposed.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.117-120
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• 2006

This study is for the strengthening method of continuous bridge through external tendon strengthening that is the most general and effective among concrete bridge's strengthening method. Recently, it is numerous that slab's parts between spans have continuity for improving trafficable ability. However, in this case, slab would have a crack; bridge's durability would be damaged, and also it is too difficult to manage and maintain bridge due to the tensile strength of negative moment. Therefore, the purpose of this study is to demonstrate load-carrying through experiments and develop new external pre-stressing strengthening method for reinforcing continuous bridge.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1894-1895
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• 2007

It is excitation system for nuclear emergency generator that is to startup automatically and sequentially supply essential loads with power. There are static type and alternating exciter, etc in its excitation system. An object of study is static excitation system which power is taken from power potential transformer and power current transformer. It is to complement curtailment of excitation system ability at happening short accidents. And Startup mode are quick startup and slow startup, etc. Its characteristic is looked into in this paper.