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홍경한,전상신,이승재,박찬수,권일욱,김재열,김병철,하옥남 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4
Fin-tube type(Fin-type) heat exchanger has been tested in order to replace the heat exchanger of parallel flow type(P.F-type) which is now widly used in automobile air conditioning system. The following conclusions are drawn by the comparison of the characteristics of the heat exchangers. Evaporator and condenser capacities and COP(Coefficience of performance) were varied as with the compressor speed, outdoor air temperature and air flow rate changed, which much influenced on the characteristics of the air conditioning system. Evaporator and condenser capacities were increased with increasing compressor speed and outdoor air temperature. Evaporator and condenser pressures of Fin- type were decreased by 7% and 5% respectively compared with those of P.F-type. The COP of Fin-type was decreased with increasing outdoor air temperature and compressor speed. The COP of P.F-type was decreased by 14% compared with that of Fin-type.
칭찬활동 프로그램이 청소년의 희망과 자아존중감에 미치는 효과
김혜숙,민순,박종,김경미,하윤주,김은아,정선주 韓國學校保健學會 2009 韓國學校保健學會誌 Vol.22 No.2
Purpose: The purpose of this research is to investigate the effect of the praising activity program on hope and self-esteem of adolescents. Methods: From Jan 26th to 29th 2009. 193 of subjects were participated in investigation in G city. After 4 days of data collecting in praising activity program, research is the pre and post similarity test to investigate hope and self-esteem of adolescents. Results: The average hope score of adolescents significantly increase from 3.39 before the program to 3.60 after the program. The average self.esteem score of adolescents significantly increased(p<.00l) from 3.01 before the program to 3.15 after the program. From the resuits. the program showed that it has significant effect on hope and self-esteem of adolescents. Conclusion: The praising activity program as an affirmative mass psychological program is confirmed that it affects on hope and self-esteem. Therefore. it is expected to be utilized as promotion of health program for adolescents.
위경수(Kyoung-Soo We),박수환(Soo-Hwan Park),이창건(Chang-Gun Lee),하은용(Eun-Yong Ha) 한국정보과학회 2009 한국정보과학회 학술발표논문집 Vol.36 No.1
로봇 산업이 발전하여 보다 정교한 로봇이 등장하면서 로봇 소프트웨어의 복잡성이 증가하고 있다. 그리고 그러한 복잡성을 완화시키기 위해 소프트웨어를 더 작은 모듈로 분리하는 등의 여러 가지 기법들이 제안되고 있다. 하지만 이렇게 로봇 소프트웨어의 복잡성을 낮춤으로써 그에 따른 여러 문제점들도 파생되고 있다. 여기에서는 이러한 문제점들을 로봇 태스크의 특성을 고려하여 미들웨어 레벨에서 처리할 수 있는 전략을 소개한다.