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독서캠프 프로그램을 통한 독서활동 전개에 관한 연구 - 독서지도자와 집단지도 대상자와의 상호 독서활동을 중심으로 -
김승환 한국도서관·정보학회 2001 한국도서관정보학회지 Vol.32 No.2
The reading camp program for mutual reading activities between reader`s advisers and readers which has been played four times in 2000 shows the reaction to reading activities among them as follows. $\circled1$ All of reader`s advisers and readers took an active part in the reading camp program and reader's advisers were more active. $\circled2$ All of participants of the reading camp was satisfied by all of the reading program and especially leaders were affected by daily life of reader`s advisers. $\circled3$ All of participants had an opportunity of reflections on his reading activities and leader`s advisers established their sense of life and sense of values in more affirmative. The reading camp program helped participant to enhance his reading life very much and yet reader`s advisers acquired something more than readers did especially. 독서지도자와 지도대상자간의 상호 독서활동을 전개하는 독서캠프 프로그램을 2000년도에 네 번 실시하는 과정에서 나타난 독서지도자와 지도대상자간의 독서활동에 관한 반응은 다음과 같다. $\circled1$ 독서지도자와 지도대상자들은 모두 독서캠프 프로그램에 적극적으로 참여했으며 지도대상자들이 더 적었으며, 자신의 생활관이나 독서관을 확립하는 계기는 독서지도자가 더 긍정적으로 나타났다. 독서캠프 프로그램에 참여하는 독서지도자나 지도대상자 모두 자신의 독서생활을 향상시키는데 많은 도움을 얻었는데, 특히 독서지도자가 더 많은 것을 터득하는 것으로 나타났다.
Effect of fillet radius of receiver hole on the performance of gas turbine pre-swirl system
김승환,Junghoon Lee,김동화,이창훈 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.12
Since the main flow blades of gas turbines are in high temperature and high pressure condition, their life span depends on the performance of the cooling system. A preswirl system is a device that minimizes the flow loss that occurs when the cooling air is introduced into the rotating part from the stationary part by imposing the rotation component in advance. System performance depends on the shape of the pre-swirl nozzle and receiver hole. In this study, the performance trend according to the shape change of a direct injection type pre-swirl system was numerically investigated. First, the performance was examined by varying the system inlet/outlet pressure ratio, from which the optimum flow rate of the system was determined. When a study was conducted by changing the fillet radius of the receiver hole inlet, the larger radius results in greater discharge coefficient, but there was no significant difference for radius ratio greater than 0.13. Rather interestingly, the outlet of the receiver hole without a fillet that does not spread the cooling air produced a high value of temperature drop efficiency.
김승환 한양대학교 의과대학 2015 Hanyang Medical Reviews Vol.35 No.3
Disasters are unpredictable and unavoidable. The definition of disaster is a serious disruption of the functioning of society, causing widespread human, material, or environmental losses that exceed the ability of affected society to cope using only its own resources. Disaster medicine is a discipline resulting from combination of emergency medicine and disaster management. The field of disaster medicine involves the study of subject matter from multiple medical disciplines, and disaster medicine presents unique ethical situations not seen in other areas of medicine. Disaster can be classified into two categories, natural disaster and manmade disaster, each type of disaster has its own characteristics. Disaster management has a cycle of 4 activities, preparedness, response, recovery, and prevention/mitigation. Disaster medicine specialists have a role in each part of this cycle. To achieve effective disaster response, the National Disaster Life Support Foundation suggests the DISASTER Paradigm™, which consists of detection, incident command, safety and security, assess hazards, support, triage and treatment, evacuation, and recovery.