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윤동원,Yun Dong Won 한국공기청정협회 1998 空氣淸淨技術 Vol.11 No.2
The objective of this study was to evaluate air-cleaner as to its effectiveness in removing to-bacco and incense smoke particulates within a clean chamber, which was installed with 6HEPA filter units. The measurement elements included the concentrations o
디지털 육상 이동통신에서 M진 QAM 신호의 최대비 합성 다이버시티 성능분석
윤동원,이봉환,Yun, Dong-Won,Lee, Bong-Hwan 한국정보처리학회 2001 정보처리학회논문지 C : 정보통신,정보보안 Vol.8 No.3
이 논문에서는 주파수 비선택적 느린 나카가미 m-분포 페이딩 육상 이동통신 채널에서 M 진 QAM 신호에 L-가지의 최대비 합성 다이버시티를 적용하였을 때의 오율성능을 유도하 고 분석한다. 다이버시티 채널의 페이딩 인자가 동일한 경우와 서로 다른 경우에 대하여 각 각 다중가지 다이버시티 시스템을 고려한다. 페이딩 지수 m=1 인 경우 유도된 M진 QAM 신호의 최대비 합성 다이버시티 심볼 오율식은 레일리 페이딩 채널에서의 오류식으로 돌아 간다. 유도된 결과 식들은 L 값에 대하여 신호대 잡음비에 대한 함수로 최대비 합성 다이버 시티 심볼 오율을 나타낸다. L 값을 증가시킬수록 성능 향상을 가져옴을 보여준다. 이 논문 에서 제시된 결과들은 디지털 육상 이동통신에서 QAM 시스템의 성능을 편리하게 셰산하는 데 충분히 일반적이다.
윤동원(Dongwon Yun),윤소남(Sonam Yun),박중호(Jungho Park),김고도(Godo Kim),조정현(Junghyun Jo) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In the field of diesel vehicle, it is important to make fuel atomized and to generate high pressure to reduce the amount of toxin gas and increase the efficieny. So high pressure control valve is widely used in diesel engine and a solenoid valve is of ten used in that kind of valve. In this paper, transient response of solenoid is investigated using Maxwell, commercial FEA code for electromechanical system. Firstly, an experiment about electrical response is performed and then some FE analysis is performed using Maxwell. After that, two results are compared to validate the result of the FEA. Secondly, the system is analyzed considering mechanical parts and the electro-mechanical response is solved.
윤동원(D. W. Yun),윤소남(S. N. Yun),박중호(J. H. Park),김칠성(C. S. Kim) 유공압건설기계학회 2010 유공압건설기계학회 학술대회논문집 Vol.2010 No.10
This paper presents the analysis on the proportional pressure control valve with large capacity for industrial use. Some theoretical and numerical analysis wa performed to design the proportional solenoid valve and a code has been developed for caculation for solenoid valve. To do this, analytical and numerical method was used. After several analysis, a real part for solenoid valve. To do this, analytical and numerical method was used. After several analysis, a rel part for solenoid valve are manufactured and some experiment for assembled solenoid valve was performed. The experiment reults show that the results from the developed program comes to nearly that of experiment.
요양병원과 요양시설 노인의 건강상태, 사회적 지지 및 거주만족도
윤동원 ( Dongwon Yun ) 경희대학교 동서의학연구소 2016 동서간호학연구지 Vol.22 No.1
Purpose: The purpose of this study was to identify and compare the differences on perceived health status, Activities of Daily Livings (ADL), social support, and residential satisfaction between long-term care hospitals and nursing homes. Methods: Data was collected through questionnaires and interviews conducted from March 29 to April 22, 2011. The subjects were 66 old adults in 3 long-term care hospitals and 53 old adults in 6 nursing homes. Data were analyzed by Pearson’s correlation analysis and t-tests. Results: ADL and subjective health status in nursing homes were worse than those in long-term hospitals, but it was not statistically significant (p>.05). Old adults in nursing homes received more emotional support from other residents and staff, and received more instrumental support from staff than those in long-term care hospitals (p<.001). The mean scores of resident satisfaction in long-term care hospitals and nursing homes were 3.53 (SD= ±0.36) and 3.97 (SD= ±0.44), respectively. Resident satisfaction in nursing homes significantly was higher than long-term care hospitals (p<.001). Conclusion: Health care personnels in long-term care hospitals should enhance resident satisfaction and social support and need to coordinate long-stay patients with nursing homes.