• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.187-189
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• 2005

The asset management system for power distribution is necessary to make efficient use of distribution asset and to devise optimum investment plans. So we developed KDAMS(Korea Distribution Asset Management System) that is adopting reliability indexs, SAIFI and SAIDI, and operator's experiences. This paper presents functions of the system that is reliability management, failure rate management, establishment of optimum investment plan and so on. And it presents the of used algorithms to develop this system.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.49 no.6
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• pp.266-271
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• 2000

The electric power industries are moving from the conventional monopolistic or vertically integrated environments to deregulated and competitive environments, where each participant is concerned with profit maximization rather than system-wide costs minimization. Consequently, the conventional least-cost approaches for the generation resource schedule can not exactly handle real-world situations. This paper presents a game theory application for analyzing power transactions and market design in a deregulated energy marketplace, where the market participants determine the net profits through the optimal bidding strategies. The demand elasticity of the energy price is considered for the realistic modeling of the deregulated marketplace.

• Proceedings of the Korean Nuclear Society Conference
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• 2005.05a
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• pp.639-640
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• 2005

• Journal of the Korean Society of Costume
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• v.44
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• pp.37-56
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• 1999

In clothing, a tendency of Bisexuality is in case of wearing clothing of the opposite sex, the mixing of modeling principle and characteristic of man and woman, the exclusion characteristic of sexuality that present sexlessness-the third sex. They-Designer Gabrielle Chanel, YSL, Giorgio Armani-give characteristic of man's fashion to women's fashion. However, the consciousness in design is different. Chanel apply principle of man's suit to woman's wear to express authority and power about gender image, hereby she express women liberation and equality of man and woman based on social ideology through fashion especially, she express women's sexual independency and self assurance to her clothing. YSL express liberal and bold women that pursuit reasonal and liberal life in 1970. As he apply tailoed suit's rigidity to women's wear, he made 'pants look' universal in women's wear through“Dress for success”in modern life. Armani apply successful modern image to women's wear, so he express women's image of confident intellegent as well as feminine image. He focus women's new image as man living liberal and indivisual life excluding social category rather than will of equality of man and women. Gernreich break sexual prejudice and release women freely, furthermore, as he express concern of sexuality pursuit liberty of mankind surpassing sex distinction with women liberty. Gianni Versace pursuit mix and extinguishment of sexual image many-sided, and break fixed idea of sex, and reprovide feminine and masculine image. So his design tend homosexuality because he regard women's glamor and ostensible sexuality as standard of beauty, he apply this to man's wear as well as women's wear. With this, he expresses sensitive and liberal man's that break characteristic of Gender that symbolize power and authority in man's wear through 'Without ties'.

• Proceedings of the KIEE Conference
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• 2002.07b
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• pp.1012-1014
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• 2002

This paper shows that a static redundancy excitation system for thermal power plant. The detailed contents are system explanation and MMI(Man-Machine Interface) integration, operation mimic graph.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1812-1813
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• 2011

• Proceedings of the Korean Nuclear Society Conference
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• 2005.10a
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• pp.965-966
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• 2005

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.05a
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• pp.1306-1311
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• 2006

The root cause of abnormal sound from a heat exchanger of condensate water system in a nuclear power plant is investigated by using the impact signal-processing methodology based on the Hertz theory. The predicted results for the location of impact force and the loose part size meet good agreement with the identified materials during the overhaul period in the plant. Nuclear power plants have experienced several loose parts and the frequency of the loose part will be increased along the aging of the plants. So, this analysis methodology for the impact signal will be widely utilized for the primary and secondary side of the nuclear power plant.

• Transactions of The Korea Fluid Power Systems Society
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• v.1 no.4
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• pp.1-8
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• 2004

The optimum design parameters of several hydraulic systems are obtained using the complex method that is one kind of constrained direct search method. First, the parameters of lead-lag controller of the direct drive servovalve is designed using the complex method to satisfy the steady-state error requirement. Second, the optimum locating point of hydraulic cylinder Is determined to minimize the cylinder force in the operation range of rotational sluice gate. For the third application case, the optimum piston area of hydraulic cylinder is determined to minimize the man power to elevate the manually operated sluice gate.

• Proceedings of the KIEE Conference
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• 2009.04b
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• pp.131-135
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• 2009

This paper reviews the characteristics of Power MOSFET device technology that are leading to improvements in power loss for power electronic system. The silicon bipolar power transistor has been displaced by silicon power MOSFET's in low and high voltage system. The power electronic technology requires the marriage of power device technology with MOS-gated device and bipolar analog circuits.