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스네이크 패턴을 가진 대면적 판형 열교환기의 전열성능에 관한 연구
김정규(Jung-Kyu Kim),박재홍(Jae-Hong Park),조성열(Sung-Youl Cho),양명국(Myeong-Kuk Yang),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),임혁(Hyug-Lim),현용익(Yong-Ik Hyun) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
In view of space saving, the design of more compact heat exchangers is important. Also, to meet the demands for saving energy and resources today, manufacturers have tried to enhance efficiency and reduce the size and weight of heat exchangers. Over the past decades, there have been tremendous advancements in the manufacturing technology of high efficiency heat exchangers. This has allowed the use of high performance(high heat transfer coefficient and low pressure drop) heat exchangers. Consequently, the use of high performance heat exchanger becomes popular in the design of heat exchangers. When compared with the well-established shell and tube heat exchangers, the plate heat exchanger shows a lot of advantages like high NTU values, compactness, low cost, multi duties and reduced fouling etc. For the higher performance in plate heat exchanger, the snake pattern in the heat transfer plate has been developed instead of the conventional herringbone pattern. The performance of the plate heat exchanger with snake pattern was evaluated by test, and provided in this paper.
승마체험 동기가 가치와 만족도 및 행동의도에 미치는 구조관계 분석
이충기 ( Choong Ki Lee ),고성규 ( Sung Kyu Ko ),김진옥 ( Jin Ok Kim ) 대한관광경영학회 2014 觀光硏究 Vol.28 No.6
본 연구의 목적은 승마체험 동기, 가치, 만족도 그리고 행동의도 간 구조관계를 규명하는데 목적이 있다. 이를 위하여 승마장에서 승마체험을 경험한 이용객을 대상으로 현지조사를 실시하였다. 요인분석 결과, 4가지 주요 동기요인이 도출되었다(친화성, 일탈성, 과시성, 건강추구성). 또한, 감정적 가치와 기능적 가치 등 2가지 가치가 도출되었다. 구조모형 분석결과, 친화성과 일탈성 동기만이 감정적 가치에 긍정적인 영향을 미치는 것으로 나타난 반면, 4가지 모든 동기요인은 기능적 가치에 긍정적인 영향을 미치는 것으로 나타났다. 더욱이, 기능적 가치는 승마체험자들의 만족도에 긍정적인 영향을 미치는 것으로 나타났으며, 감정적 가치는 기능적 가치보다 만족도에 더 큰 영향을 미치는 것으로 나타났다. 마지막으로 만족도는 기대한 바와 같이 승마체험을 즐기는 행동의도에 긍정적인 영향을 미치는 것으로 나타났다. 이러한 분석결과는 감정적, 기능적 가치가 승마체험 동기와 만족도 간 중요한 매개역할을 하고 있다는 사실을 시사해준다. The purpose of this study was to examine the structural relationships among horseback riding motivation, value, satisfaction, and behavioral intention. To this end onsite surveys were conducted for visitors who experienced horseback riding at horse riding sites. The results of factor analysis reveal that four underlying dimensions of motivation were delineated: friendship, escape, ostentation, and health seeking. Factor analysis also delineated two dimensions of value as expected: emotional value and functional value. The results of structural equation modelling indicate that two motivation factors of friendship and escape had positive effect on emotional values, whereas all four dimensions of motivation had positive effect on functional value. Friendship and escape motivation factors were found to have greater impact on emotional value than functional value. Furthermore, value influenced horse riders` satisfaction positively and emotional value had greater impact on satisfaction than functional value. Satisfaction had positive effect on behavioral intention to enjoy horseback riding as expected. The findings of this study imply that both values play an important role in mediating between motivation and satisfaction.
탁리소독음(托裏消毒飮) 합(合) 황련해독탕(黃連解毒湯)의 아토피피부염에 대한 실험적 연구
원영호,황충연,임규상,김종한,고성규,이부균,이동효,김남권,Weon, Young-Ho,Hwang, Chung-Yeon,Lim, Kyu-Sang,Kim, Jong-Han,Ko, Seong-Gyu,Lee, Boo-Kyun,Lee, Dong-Hyo,Kim, Nam-Kwen 대한한방안이비인후피부과학회 2011 한방안이비인후피부과학회지 Vol.24 No.1
Objective : This Experimental study was done to investigate the Effect of Taklisodok-um and Hwangryunhaedok-tang(TH) on Atopic Dermatitis. Methods : We assessed effects of TH on the IgE, IL-4, IL-5, IL-6, IgM, IgG1, IFN-${\gamma}$ in vivo, on the IL-4, IL-5, CCR3 in the skin tissues of ear and dorsum with NC/Nga mice. And we assessed effects of TH on the COX-2, IL-$1{\beta}$, TNF-${\alpha}$, IL-6 with RAW 264.7 cell. Results and Conclusion : 1. IgE, IL-4, IL-5, IL-6, IgM, IgGl levels in the serum of TH treated NC/Nga mouse group were decreased compared to the untreated control mice. IFN-r showed a increase in the experimental group compared to the untreated control group. The spleen weight of TH treated NC/Nga mice was decreased compared to the untreated control group. 2. mRNA expression levels of IL-4, IL-5 and CCR3 in the skin tissues of TH treated NC/Nga mice were decreased, and expression levels of IL-6 in the skin tissues of TH treated NC/Nga mice were decreased compared to the untreated control group. IFN-${\gamma}$ mRNA expression levels were increased compared to the untreated control group. 3. Judged from that IL-$1{\beta}$, TNF-${\alpha}$, IL-6 express of gene, effect of inflammatory Cytokines revelation were decreased compared to the untreated control group. 4. Depend on the strength of TH, inflammatory RAW 264.7 in the serum of TH were inhibited compared to the untreated control serum that leaded a COX-2 activity model. 5. Histological observation of the ear and skin tissues showed that the extents of inflammation and infiltrated immune cells in the epidermis and dermis of TH treated NC/Nga mice were highly reduced compared to the untreated control group.
이선동,안상우,권영규,고성규,신상우,배종면,Lee, Sun-Dong,Ahn, Sang-Woo,Kwon, Young-Kyu,Ko, Seong-Gyu,Shin, Sang-Woo,Bae, Jong-Myun 대한예방한의학회 2005 대한예방한의학회지 Vol.9 No.1
Subjects in this study comprised of general public (907), high school students (772), individuals associated with Oriental medicine (660), and 60 majoring in western medicine, totalling 2,413 individuals. Survey was conducted on the necessity of establishing Oriental medicine school at the national university level and the following result were obtained: - 78.3% (1847 individuals) were in favor of establishing Oriental medicine school at the national university level. - For the validity of establishment, responders expressed opinions of standard and virtuous education, higher quality education, standardized practice, research on difficult to cure diseases, and obtaining competitiveness in the world market. - One to three schools were considered as an appropriate number of schools with less than 80 students per class, Class size may be adjusted from existing schools (52.5% favored decrease in size) and (46.3% favored increase in size). - Educational and research facilities must be accopanied with schools of Oriental medicine as well as clinical training facilities, herbal pharmaceutical research centers, and fundamental medical centers. - Many favored 6 year curriculum as the most appropriate system and the school of Oriental medicine should be established within the university. Based on the information gathered in this survey, we may recognize the limitations of Oriental medicine schools at the private institutional level and support the establishment of Oriental medicine schools at th national university level. This establishment may play as a steeping stone for advancement in education, standardization of research and treatment, and commercialization of Oriental medicine of benefit the general public.
박재홍(Jae-Hong Park),조성열(Sung-Youl Cho),김정규(Jung-Kyu Kim),양명국(Myeong-Kuk Yang),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),임혁(Hyug-Lim),현용익(Yong-Ik Hyun) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
Applications of the plate heat exchanger are being expanded in ships and marine plants. Marine engine L.O(lubricant oil) cooler is one of the applications of the plate heat exchanger. It has very important role as engine radiator in the ship. Lubricant oil is flowed inside ship engine like the land engine and temperature is up to 80~90℃. Some L.O coolers are mounted in the front of the engine, and operating pressure is up to 4~8 ㎏/㎠. Because vibration of engine is passed to L.O cooler, anti-vibration is required. New L.O cooler for medium speed marine engine was developed, and its performance was evaluated by test and provided in this paper.