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최정욱(Jung-Uk Choi),조성우(Sung-Woo Cho) 대한설비공학회 2016 설비공학 논문집 Vol.28 No.7
This paper aims to suggest the water curtain installation guideline for prevention of fire spread. The water curtain systems play a role in preventing fire spread which is caused by fire flames and radiation heat release from a fire source. The radiation attenuation ratio is affected by the water droplet size, vertical distance from the nozzle and flow rate. This study suggests the water curtain installation guideline as follows : (1) Investigation of a reference store array (2) Calculation of the number of drencher heads (3) Review of the relationship between droplet size and attenuation factor depending on the height of the drencher head (4) Review of a drencher head array and spray overlapping. The reference traditional market in which a fire compartment is installed using a water curtain can be predicted to have a radiation attenuation ratio of 50%.
간이수식을 통한 태양광모듈에 발생하는 그림자 예측에 관한 연구
최정욱(Jung Uk Choi),조성우(Sung Woo Cho) 대한설비공학회 2018 설비공학 논문집 Vol.30 No.5
The objective of this study was to develop simplified equation for shadow ratio of photovoltaic module using field measuring data to affect photovoltaic power. Comparison between simplified equation results and Ecotect program simulation on 3 kW photovoltaic on house roof top at solstice in Changwon district showed 2% errors. Shadow ratio was increased with increasing number of floors. The shadow is generated until 6 floors at 1 m of the distance between building and photovoltaic module, until 8 floors at 2 m of the distance between building and photovoltaic module, and until 8 floors at 3 m of the distance between building and photovoltaic module. The shadow generation time was decreased when the distance between building and photovoltaic module was increased. The shadow generation and shadow ratio are high at noon.
정우성,신우철,홍익환,최정욱,김윤경,Jeong, Woo Sung,Shin, Woo Cheol,Hong, Ik Hwan,Choi, Jung Uk,Kim, Yun-Kyung 대한한의학방제학회 2017 大韓韓醫學方劑學會誌 Vol.25 No.3
Objectives : In order to increase the utilization rate of insurance covered herbal medicines, it is necessary to improve the standard prescription lists of current national health insurance service. Methods : Previous research and discussions have been summarized, the cases of overseas insurance prescription were investigated, and compared with the insurance prescription of Korea. We conducted two questionnaire surveys. From the first email questionnaire survey, response rate was very low. So once again, from december 4, 2014 to december 17, we emailed a questionnaire survey to 17,275 members of the Korean medicine doctors and 890 peoples(5.1%) responded for two weeks. We analyzed prescriptions from previous studies, overseas cases, and surveys. Results : With overseas herbal medicine health insurance lists, prescriptions recommended by the experts committee, the prescriptions results of the first and second surveys, and the prescriptions presented in previous studies, we compared and analyzed all the results and we derived 202 prescriptions for NHIS. Conclusion: We suggest 127 Single extracts and 202 prescriptions to be added for NHI.