• 대한전기학회논문지:전력기술부문A
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• 제51권12호
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• pp.597-602
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• 2002

The restructuring of power industry is still going on all over the world for last several decades. Many kinds of restructuring model have been studied, proposed, and applied. Among those models, power pool is more popular than other. This paper assumes the power pool market structure having competitive generation sector, and a new method is presented to build a bidding strategy in that market. The utilities participating in the market have the perfect information of their cost and price functions, but they don't know which strategy to be chosen by others. To define one's strategy as a vector, we make utility's cost/price functions into discrete step functions. An utility knows only his own strategy, so he estimates the other's cost/price functions into discrete step functions. An utility knows only his own strategy, so he estimates the other's strategy using Nash equilibrium or stochastic methods. And he also has to forecast the system demand. According to this forecasting result, his payoffs can be changed. Considering these all conditions, we formulate a bidding game problem and apply noncooperative game theory to that problem for the optimal strategy or solution. Some restrictive assumption are added for simplification of solving process. A numerical example is given in Case Study to show essential features and concrete results of this approach.

• 한국가구학회지
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• 제27권2호
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• pp.69-79
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• 2016

This paper explores the inlaying technique of Geum-Cheol Kim, a joiner has made the traditional Korean furniture mostly popular in Tong Yeong in Gyeongnam province in Korea. He has adopted the technique in creating his furniture since he started learning and working the furniture making at sixteen years old. So he is only the cabinet maker with the technique in Tong Yeong GN. Samhojang, Seongtaenoemun, Gwuinoemun, and so on are the techniques inlaid in the furniture like Jang, Nong, Beoseonjang, Mungap and so on. The Tong-yeong techniques are even more difficult and take longer time than other ordinary inlays to be created, but they are very secured and last longer. And the techniques are very beautiful but today they are not well-known and used in Korea. Hence, the succession and preservation of the techniques are needed from the joiner to younger generation. Futhermore, the development on the easier and shorter process to create them is needed to be popular throughout Korea in order to be useful for contemporary furniture.

• Journal of Genetic Medicine
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• 제18권2호
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• pp.147-151
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• 2021

The Say-Barber-Biesecker-Young-Simpson variant of Ohdo syndrome (SBBYSS) (Online Mendelian Inheritance in Man #603736) is a rare autosomal dominant disorder and clinically features blepharophimosis with ptosis, a mask-like facial appearance, cryptorchidism, congenital heart defect, long thumbs/great toes, and thyroid dysfunction. The etiology of SBBYSS has been shown to be due to heterozygous KAT6B gene mutation. Here we report a case of a neonate with SBBYSS identified a novel mutation in KAT6B gene. The patient showed typical dysmorphic facies, cryptorchidism with micropenis, overriding fingers, and long thumbs and toes at birth. He had also hypothyroidism, large atrial septal defect, and sensorineural hearing loss. The next generation sequencing identified a heterozygous novel variant, c.5206C>T (p.Gln1736Ter) in KAT6B gene. At the 9 months of age, he underwent patch closure for atrial septal defect. Until the 12-month follow-up, he was under-developed.

• 한국연극학
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• 제48호
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• pp.385-419
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• 2012

Son Jinchaek got into his directing career since 1976 when he founded the theatre group Minye with Huhgyu and others. His experience in Minye was the turnaround of his life; Huhgyu was a teacher in his artist's life whereas Brecht was a teacher for his ideology to make 'Korean Theatre'. From these two teachers, he learned how and why Korean Theatre should be made. Since then, Korean theatre was his calling for 40 years of his directing career. As he established Michoo in 1986, it served a turning point in his art. His focus was on intrinsic attributes of Korean Theatre with Madang Jungshin. With Madang Jungshin, he tried to get over the former generation's fixation on external materials of Korean traditional theatre and folk culture to make Korean Theatre. Rather, he believed Korean Theatre could be realized when it grafted Korean social reality onto the stage, while the form was subsequent. He advocated Korean Theatre should mirror present social reality and circulate social energy. Also, he did not give up aesthetics. On the contrary, his aesthetic style was conspicuously evident in his productions. In spite of his life long career with noteworthy works, the critical discourses are strikingly scarce especially when compared with other senior and peer directors such as Hugh Gyu, Ahn Minsoo, Oh Taesok, and Lee Yoontaek. During his career he has crossed into various genres from Changeuk, Madangnori, and to theatres, which were too versatile to thread them into a discourse and caused a lack of theoretical greeting. Madangnori has anchored its artistic structure on its polished aesthetics which were acclaimed by the general audience for 30 years. For theatre, he concentrated on one production per year to grasp its own style. Theatre works also had revealed his own style of being opened and of being emptied which was certainly different from Madangnori, but had same aesthetic principle within it. This paper attempts to recompose his stylistic features with 'Madang aesthetics' which were based on open space, open acting style, and graphic ensemble. This paper tries to demonstrate how his 'Madang aesthetics' has refined his productions in scenography, acting style, and in more like metaphoric and metonymic symbolic expression of the graphic ensemble. To do this, two productions were explored: eLee Chunpoongjeun and Yulha Ilgyee Manbo. Madangnori was sorely explored by Son Jinchaek with his artistic colleagues Yoon Munshik, Kim Jongyeup, Kim Sungnyu, music designer Park Buhmhoon, and choreographer Guk Sooho. Though it has been ignored for its popular appeal by the doctrinaire theoretical opinions, it started to pull academic attention recently. His theatres are also getting sharp with his 'Madang aesthetics' as well as minimalistic expression in scenography, acting style, and graphic ensemble. Madang Jungshin is the soul and Madang aesthetics is the body in his artistic works. The Madang Jungshin animates the Madang aesthetics, so they become alive in his theatre.

• 천문학회보
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• 제42권2호
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• pp.77.4-78
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• 2017

The presence of double red clump (RC; metal-rich counterpart of horizontal-branch) in high latitude field of the Milky Way (MW) bulge is widely interpreted as evidence for an X-shaped structure originated from the bar instability. However, Lee et al. (2015) recently suggested an alternative model, according to which the double RC is metal-rich manifestation of multiple stellar population phenomenon observed in globular clusters (GCs). Here we show that stars in bright RC are enhanced in CN compared to those in faint RC from our low-resolution spectroscopy. CN traces N, and N-rich stars are also enhanced in Na and He in GCs. Since GCs are the only environment that produce second generation stars with enhanced N, Na, & He, this is a direct evidence that stars in the classical bulge component of the MW were mostly provided by proto-GCs.

• 한국조리학회지
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• 제23권6호
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• pp.57-69
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• 2017

In this quantitative research, it was enhanced to understand the impact of intrinsic motivation on creative process engagement by examining the significant role of psychological safety on intrinsic motivation. These relationships were examined by targeting the employees working full-time for five star deluxe hotels. Total number of 230 responses had been collected out of 250 cases requested and he number of 213 cases was used for the final analysis. The data were analyzed using structural equation modeling with SPSS 19.0 and AMOS 7 software program. The results suggested that psychological safety is significantly associated with intrinsic motivation. Furthermore, the hotel employees' problem identification, information searching & coding, and idea generation are affected by intrinsic motivation. That is, intrinsic motivation plays a significant role for each sub-factors of creative process engagement in the hotel industry. The theoretical and practical implications of these findings are established and related suggestion for formulating marketing strategy is well discussed.

• 한국의사학회지
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• 제13권1호
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• pp.21-32
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• 2000

Through this research, it was discovered that Wang Sa-wung studied classics such as "Nai Kyung", and brought about new theries and prescription by combining it with his own experience. He asserted 'Ki Hwa Chu Ki' theory which differentiated 'Shin Kam' and 'Bok Sa' within 'On Byung', and this was a new theory which was not in existence before. The main reason for the recognition received by the future generation is, not only because of the substantial theoretical background but, due to the fact that his ideas were based on making practical use easier within rich near a bed experience.

• 대한수학회보
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• 제20권2호
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• pp.99-103
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• 1983

Internal heat generation is one of the insidious conditions affecting the quality of an industrial product after it is cast, coated, molded, forged or laminated. Frequently, the product is pressed into service before the exothermic chemical reactions in the generic material has been completed. The heat liberated from this continuing chemical reaction or the residual deformation from the rheological activities in the materials must be adequately removed or prevented, or the product may be discolored, warped, weakened or even "ignited" spontaneously. Numerous instances of premature structural failures, product-recalls, and/or system-malfunctions have been recorded in recent history. The Coulee Dam was poured with pre-chilled concrete just to negate this freakish encore. It is well-known that concrete (a non-isotropic conducting medium), for instance, takes 28 days to develop its full strength. During this period of curing it is conceivable that the processes of internal heat generation, heat conduction and heat dissipation take place simultaneously inside the medium.he medium.

• 한국전기전자재료학회논문지
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• 제14권4호
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• pp.336-340
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• 2001

We have investigated the generation of pretilt angle and alignment stability for a nematic liquid crystal (NLC) with obliquely polarized UV exposure on the three kinds of photo-polymer. High pretilt angle of the NLC was obtained by polarized UV exposure on a PM4Ch surface for 1 min. But, the low pretilt angle of he NLC on a PVCi surface was observed. The pretilt angle generated is attributed ot the photosensitivity by the long side chaining of photo-polymer. Also, a good thermal stability of the three kinds of photo-polymer were obtained by thermogravimetric analysis (TGA) measurement until 300$^{\circ}C$. Finally, the good LC aligning capabilities using the photodimerization method were observed by annealing-treatment until 150$^{\circ}C$.

• Archives of Pharmacal Research
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• 제28권10호
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• pp.1183-1189
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• 2005

Although plant-derived phenolic acids have been reported to have anti-cancer activity, the exact mechanism is not completely understood. In this study, we investigated the role for reactive oxygen species (ROS) as a mediator of the apoptosis induced by caffeic acid (CA) and ferulic acid (FA), common phenolic acids in plants in HepG2 human hepatoma cells. CA and FA reduced cell viability, and induced apoptotic cell death in a dose-dependent manner. In addition, they evoked a dose-related elevation of intracellular ROS. Treatment with various inhibitors of NADPH oxidase (diphenylene iodonium, apocynin, neopterine) significantly blunted both the generation of ROS and the induction of apoptosis induced CA and FA. These results suggest that ROS generated through activation of NADPH oxidase may play an essential role in the apoptosis induced by CA and FA in HepG2 cells. These results further suggest that CA and FA may be valuable for the therapeutic management of human hepatomas.