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QFD-FMEA를 이용한 해체공사의 위험평가와 근본원인의 분류 방법
유동욱,임남기,전재열,조재호,Yoo, Donguk,Lim, Nam-Gi,Chun, Jae-Youl,Cho, Jaeho 한국건축시공학회 2023 한국건축시공학회지 Vol.23 No.4
The demolition of domestic infrastructures mirrors other significant construction initiatives in presenting a markedly high accident rate. A comprehensive investigation into the origins of such accidents is crucial for the prevention of future incidents. Upon detailed inspection, the causes of demolition construction accidents are multifarious, encompassing unsafe worker behavior, hazardous conditions, psychological and physical states, and site management deficiencies. While statistics relating to demolition construction accidents are consistently collated and reported, there exists an exigent need for a more foundational cause categorization system based on accident type. Drawing from Heinrich's Domino Theory, this study classifies the origins of accidents(unsafe behavior, unsafe conditions) and human errors(human factors) as per the type of accidents experienced during demolition construction. In this study, a three-step model of QFD-FMEA(Quality Function Deployment - Failure Mode Effect Analysis) is employed to systematically categorize accident causes according to the types of accidents that occur during demolition construction. The QFD-FMEA method offers a technique for cause classification at each stage of the demolition process, including direct causes(unsafe behavior, unsafe environment), and human errors(human factors) through a tri-stage process. The results of this accident cause classification can serve as safety knowledge and reference checklists for accident prevention efforts.
유동욱(D.W.Yoo),정창용(C.Y.Jeong),백주원(J.W.Baek),조정구(J.G.Cho),조기연(K.Y.Cho),김학성(H.S.Kim),원충연(C.Y.Won) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
A precision high voltage generator for ion injection is implemented on HFZVS-PSCI (Phase-Shift-Controlled Inverter). Some practical aspects of implementing precision high voltage generator with HFZVS-PSCI, such an a HFHV transformer, multiflier, and precision CR divider are fast dynamic response, low ripple voltage, and high accuracy.<br/> <br/>
전풍의 전자현미경학적 관찰 - 과색소 침착 및 저색소 침착에 따른 멜라닌소체의 구조적 변화 -
유동욱(Dong Woog Yoo),김홍직(Hong Jig Kim),김용환(Yong Whan Kim),노병인(Byung In Ro),장진요(Chin Yo Chang) 대한피부과학회 1983 대한피부과학회지 Vol.21 No.1
Electron microscopic examination of specimens from lesions of eight patients with hyperpigmented and six patients with hypopigmented tinea versicolor and from unaffected skin in each patient was performed. The results are summarized as follows; 1. In hyperpigmented lesions, melanosomes are larger and more singly dispersed than in unaffected skin. 2. In hypopigmented lesions, melanosomes are smaller and less singly diepersed than in unaffected skin. 3. Number of total melanosomes in hyperpigmented and hypopigmented lesions was not different from in unaffected skin.
유동욱(D.W. Yoo),김학성(H.S. Kim),백주원(J.W. Baek),류홍제(H.J. Ryoo),임근희(G.H. Rim),E.P.Pavlov,박선순(S.S. Park) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
High Voltage High Current Pulsed Electric Fields (HVHC-PEF) is a promising technology for the non-thermal pasteurization of foods and a sound complement or replacement to traditional thermal pasteurization, which inactivates bacteria and other microorganisms harmful to humans, but also degrades color, flavor, texture and nutrients. Foods can be pasteurized with pulsed electric fields at ambient or refrigerated temperatures for a short treatment time of seconds or less and the fresh-like quality of food is preserved.<br/> Although successful in laboratory tests, applying HVHC-PEF to food pasteurization on a large scale presents many unresolved engineering problems. In this paper the design considerations for 25kV 1kA class HVHC-PEF pasteurization equipment are analyzed and experimental results are discussed.