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백승문,황미영,김영희 대한가정학회 2003 Human Ecology Research(HER) Vol.41 No.1
The present study was to investigate whether Cyberspace addiction groups could be classified into types and examine the relationship with types of Cyberspace addiction and adolescents' psychological environment. The findings were as follow: First, adolescents' Cyberspace addiction was analyzed by factor analysis and classified by four different types. which were named as sensation seeking, life interference, time dependency, and psychological dependency. Second, male students experienced more sensation seeking and life interference tendencies than female students who experienced more psychological dependency tendency than male students. High school students experienced more life interference tendency than middle school students. Third, there was relationship with types of adolescents' Cyberspace addiction and psychological environment. Adolescents who addicted Cyberspace with sensation seeking were more likely to avoid conversation with families, and had a tendency of compulsiveness and depression. Adolescents who addicted Cyberspace with life interference had a tendency of compulsiveness and depression, and had a problem of school life and family relationship. Adolescents who addicted Cyberspace with time dependency showed the compulsiveness and avoided conversation with families. Adolescents who addicted Cyberspace with psychological dependency were more likelyto have peer relationship and had a tendency of depression. conclusively, the psycho-social environment such as compulsiveness, depression, family and peer relationship, and school environment was related to types of adolescents' Cyberspace addiction more or less.
백승문,최지호 대한이비인후과학회 2017 대한이비인후과학회지 두경부외과학 Vol.60 No.7
It is common to find a nose with a hump, lower nasal tip and a radix among Koreans. A common procedure as an aesthetical improvement for such feature, involves rasping of the hump, while lifting the tip and the bridge at the same time. As for the hump, en bloc resection is a well-known, traditional surgical method, but it may cause an open roof deformity, which leads to a high possibility of infection if dorsal augmentation using silicone was performed through it as it connects the nasal cavity and dorsum. To overcome this complication, the hump on the bony portion and cartilaginous has been improved by a modified autospreader graft. Also, the graft can also be used for tip-plasty in dorsal augmentation using silicone, septal extension graft, strut and onlay graft. As a result of constant monitoring for a year, the reformation of the hump and infection was not found. Korean J Otorhinolaryngol-Head Neck Surg 2017;60(7):360-3
백승문(Seung-Moon Baek),윤정인(Jung-In Yoon) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
This paper presents the new cascade liquefaction cycles using CO₂-C₂H6-N₂ and CO₂-N₂O-N₂. The performance of the cascade liquefaction cycles with respect to temperature differences in the LNG heat exchangers is compared the performance of these cycles with phillips optimized cascade liquefaction cycle. From the comparison of performance of three cycles, the cascade liquefaction cycles using CO₂-C₂H6-N₂ showed the highest COP. And the cycles using CO₂-C₂H6-N₂ and CO₂-N₂O-N₂ presented the second and third highest COP, respectively. In the view of performance, the optimized cascade liquefaction cycle using C₃H8-C₂H₄-C₁H₄ yields much better COP. But, in the environment view, it is found that the cascade liquefaction cycle using CO₂-C₂H6-N₂ shows favorable characteristics.
백승문(Seung-Moon Baek),심규진(Gyu-jin Shim),문춘근(Choon-Geun Moon),윤정인(Jung-In Yoon) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-
An experiment is carried out in the present study to investigate the performance of Closed cooling tower with small diameter tube. The test section has a heat exchanger that consists of 15.88㎜ tubes with ten rows and columns and staggered arrangement. Cooling capacity and range was calculated with the changes of entrance of cooling water and conditions of fluid process. The results show operating cooling tower making a heat exchanger to block with multi path have high cooling capacity and range than using one path as a universal way.
백승문(S. M. Baek),김현우(H. W. Kim),곽진우(J. W. Kwag),문춘근(C. G. Moon),정석권(S. K. Jeong),윤정인(J. I. Yoon) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
This paper presents the characteristics of seasonal capacity control of variable speed water cooler. The experiment is set to find the degree of superheat obtaining the optimum cooling capacity, with the electronic expansion valve controlled by the variation of compressor speed maintaining the constant degree of superheat at the evaporator outlet. It is a preliminary study on the optimum control of the water cooler system using a variable speed compressor controlled by inverter. It is investigated that the distribution of high and low pressures on a system is checked with variation of electronic expansion valve open/close degree and outdoor temperature.