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박인순(In-soon Park),김창숙(Chang-sook Kim),김란(Ran Kim),김영재(Young-jae Kim),박명희(Myung-hee Park),정영주(Young-ju Jung) 대한환경위생공학회 2009 대한환경위생공학회지 Vol.24 No.4
The purpose of this study was to identify the factors influencing the Exercise Performance of elderly patients with diabetes. The subjects were 153 elderly patients with diabetes who were selected from the public health center in Gwang ju. The data collected was analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation and stepwise multiple regression. This study found that approximately 52.9% of the subjects were exercising regulary. Exercise performance was significantly different according to education level, family income by month, and level of diabetes education. Significant factors influencing exercise performance were exercise self-efficacy, exercise social support and exercise benefits. The most powerful predictor of exercise performance was exercise self-efficacy(34.2%). This study suggests that nurses should emphasize exercise social support. and exercise benefits as well as reinforce exercise self-efficacy to improve exercise performance of the elderly patients with diabetes.
외기보상제어 적용에 따른 지열 히트펌프 시스템의 에너지 효율 향상에 관한 연구
정영주(Jung, Young-Ju),김효준(Kim, Hyo-Jun),이용호,황정하(Hwang, Jung-Ha),조영흠(Cho, Young-Hum) 한국태양에너지학회 2015 한국태양에너지학회 논문집 Vol.35 No.1
The government is fostering a renewable energy industry as an alternative to handle the energy crisis. Among the renewable energy systems available, geothermal energy is being highlighted as being highly efficient and safely operable without the effect of outdoor air. Accordingly, a study on the geothermal heat pump is in progress in various worldwide perspective. However, Geothermal energy is only in charge of part load of the building due to the high initial installation cost in korea. Moreover, its efficiency is reduced due to the use of independent existing heat sources. In this study, after selecting the building containing the actual installed geothermal heat pump, the use of excellent geothermal heat pump systems was maximized in terms of the energy efficiency. The objective of this study is to show the operation method of geothermal heat pump system to improve energy efficiency through the TRNSYS simulation. This paper proposed operation methods of geothermal heat pump control according to outdoor air temperature. The result of this study is that existing operation method had some problems and if offered improvement is applied to real condition, energy consumption would be decreased.
사무소 건물의 태양열 시스템 운영조건 변화에 따른 에너지 효율 향상에 관한 연구
정영주(Jung, Young-Ju),김석현(Kim, Seok-Hyun),이용호,황정하(Hwang, Jung-Ha),조영흠(Cho, Young-Hum) 한국태양에너지학회 2014 한국태양에너지학회 논문집 Vol.34 No.5
The supply rate of renewable energy has been increasing under the influence of an energy scarcity. Government has supported the use of renewable energy by government subsidies. The operation of renewable may not been operating appropriately, although increasing the use of renewable energy. We found out some problems of the operation of renewable energy and offered some improvements. This research proposes the efficient operation method for the solar thermal system, and proposed operation method was compared and evaluated with existing operation strategy after selecting one building installed solar thermal system. Recently, the interest to renewable energy has increased because of the environmental issues and energy crisis. However the utilization of the renewable energy system is low because of the use of renewable energy system and existing renewable energy system independently, although supply rate of renewable system isincreasing. Especially, in the case of solar thermal system heating load is not responsible for the load of hot water supply in many cases. Therefore, suggesting efficient operation plans and evaluations of the energy consumption and efficiency of a solar thermal system is needed.