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병원인증제도가 리더십, 조직문화, 병원경영 활동 및 성과에 미친 영향
우정식 ( Jung Sik Woo ),김영훈 ( Young Hoon Kim ),윤병준 ( Byoung Jun Yoon ),이해종 ( Hae Jong Lee ),김한성 ( Han Sung Kim ),최영진 ( Young Jin Choi ),한휘종 ( Whie Jong Han ),윤서중 ( Seo Jung Yoon ) 한국병원경영학회 2013 병원경영학회지 Vol.18 No.2
The purpose of this study is to analyze the change of hospitals that patients safety and quality improvement by accreditation process and to examine the impact or interrelation of leadership, organizational culture, hospital management activities and recognition of hospital management performances. The data were collected through a review of the literature, and selfadministered survey with a structured questionnaires to 714 subjects from several medical staff members, administration staff members, nursing staff members, medical technicians and other staff members working in 23 accredited hospitals in Korea. In this analysis hierarchical multiple regression and structural equation model were used. The conclusion of this study provides a theoretical model for understanding organizational changes brought about by accreditation system. Factor on improvement of efficiency and raise the morale, rather than increase of medical income and reduce of the cost factors, had a stronger influence on the accreditation process. In the future, the hospital`s participation to induce the accreditation program voluntarily will come up with an alternative policy concern about financial perspective. Also, the hospitals which preparing accreditation program to achieve the goal efficiently, will make use of transformational leadership through enhancing individual consideration and intellectual development to leading members participation. Additionally, non-accredited hospitals should aim at professional culture by innovative and creative approaches, and inviting members to learning and growth in the organization.
경기도 내 업종별 사업장 대기배출가스의 VOCs 배출 특성 연구
김은아,우정식,황선민,최윤호,황철원,조의호,이상철,황현아,김요용,오조교 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
본 연구는 경기도 내 사업장 중 도장업, 인쇄업, 섬유가공업, 화학물질제조업, 금속제품가공업 5개 업종 32개 사업장의 대기배출가스 중 휘발성유기화합물 14종의 배출 특성을 조사하였다. 휘발성유기화합물질이 많이 배출되는 도장업, 인쇄업, 화학물질제조업은 Benzene, Ethyl benzene, Toluene, Xylene이 검출되며, 섬유가공업과 금속제품가공업은 Dichloromethane과 Toluene, Xylen이 많이 검출되는 특성을 나타냈다. 대기배출가스 중 휘발성유기화합물질의 농도가 높은 도장업, 인쇄업, 화학물질제조업은 직접 연소에 의한 방지시설 운영이 흡착에 의한 방지시설 운영보다 오염물질 관리 측면에서 유리한 것으로 나타났다. 또한 섬유가공업과 금속제품가공업의 대기배출가스에 휘발성 유기화합물질이 배출됨에 따라 흡착 방지시설의 추가설치가 적절할 것으로 판단된다.
산림휴양지 유형에 따른 피톤치드(모노테르펜) 농도 비교
이용기,우정식,최시림,신은상,Lee, Yong-Ki,Woo, Jung-Sik,Choi, Si-Rim,Shin, Eun-Sang 한국환경보건학회 2015 한국환경보건학회지 Vol.41 No.4
Objectives: This study was conducted to provide scientific and effective information on phytoncides, which are associated with forest healing, and to activate recreational forests. Methods: The target sites were natural recreation forests, a forest park and an arboretum, and the control sites were three urban parks. The samples were collected at a volume of 6.0 L and a flow rate of 0.1 L/min for one hour using a low volume pump and the solid adsorbent sampling method. The phytoncide compounds adsorbed in the Tenax TA tube were analyzed by a automatic heat desorption unit and GC-MS. Results: By type of recreational forest, the annual concentrations of phytoncide (monoterpene) for the forest park showed the highest concentration with $1.450{\mu}g/m^3$, while those for the arboretum showed the lowest concentration at $0.892{\mu}g/m^3$, and thus the concentration of the forest park was approximately 1.6 times higher than the arboretum. The season showing the highest concentration of phytoncides was summer (June) and the forest park was the highest among the recreational forests. The concentrations of major components for phytoncide showed in descending order: ${\alpha}-pinene$, ${\beta}-pinene$, camphene, 3-carene and limonene. The seasonal concentration of ${\alpha}-pinene$, camphene and ${\beta}-pinene$ by type of recreational forest increased in April, which is characterized by low temperature and humidity, and the seasonal concentration of camphene decreased with higher humidity. The meteorological factors which had the high correlation with the concentration of total terpene were temperature and humidity. $CO_2$ and $O_2$ showed an inverse correlation. Conclusion: The major components of phytoncide were ${\alpha}-pinene$, ${\beta}-pinene$, camphene, 3-carene and limonene in descending order of concentration. Further and systematic study on the chemical nature of individual phytoncides, and on the effect of phytoncides on humans needs to be performed.
김영아,우정식 한국항공우주학회 2011 한국항공우주학회 학술발표회 논문집 Vol.2011 No.11
본 연구에서는 기하학적 비선형 후좌굴 유한요소 해석을 통하여 얇은 멤브레인에서 주름의 발생이 컷의 진전방향에 미치는 영향을 연구하였다. 해석에서는 중앙에 기울어진 컷을 가진 양단에 인장을 받고 있는 직사각형 멤브레인을 고려하였고, 주름이 발생한 경우와 주름이 발생하지 않은 경우에 대해 각각 해석을 수행하여 컷의 진전각도를 비교하였다. 컷의 진전각도는 에너지 방출률이 최대인 방향, KII의 값이 0이 되는 방향 및 접선응력이 최대인 방향을 구하는 방법을 사용하여 계산하였다. 또한 다양한 컷의 각도를 고려하여 컷의 각도에 따른 주름의 영향을 조사하였으며 J-적분 값의 변화도 비교하였다. In this paper, the effect of wrinkling on the cut propagation direction of thin membrane was studied using geometrically nonlinear shell element post-buckling analysis. In the analysis, rectangular tensile membrane configuration with a slanted center cut was considered. The cut propagation direction was predicted by the maximum energy release rate method, the KII-zero method, and the maximum tangential stress method. The cut propagation angle and the J-integral values were calculated for the wrinkled and unwrinkled cases and the results were compared. The effect of initial cut orientation angles were carefully investigated.