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SCM을 위한 정보시스템의 확산이 채찍효과에 미치는 영향에 관한 연구
임희택,강경식,Lim, Hee-Taek,Kang, Kyung-sik 대한안전경영과학회 2017 대한안전경영과학회지 Vol.19 No.1
The size of the market for SCM information systems have globally and steadily increased. And there are businesses that obtained innovative business performance by introducing SCM information systems. However, many businesses have still undergone trial and error in the process to introduce and operate SCM. As external factors including suppliers, customers, etc. and internal factors of businesses have been analyzed to be failure factors of executing SCM information systems, the businesses that try to introduce SCM information systems need to understand possible failure factors and establish the solutions. Therefore, this study tries to verify the diffusion of SCM information systems and effects on bullwhip effects. The study is expected to suggest empirical data that people will refer to the establishment of next counterstrategies according to the lapse of the period that systems are introduced based on theoretical bases related to the diffusion of SCM information systems.
알루미늄 튜브 하이드로포밍에서의 예비 굽힘 공정의 효과에 관한 연구
임희택(Lim Hee Taek),박경창(Park Kyoung Chang),김형종(Kim Hyung Jong),김헌영(Kim Heon Young) 강원대학교 산업기술연구소 2004 産業技術硏究 Vol.24 No.1
Recently social demands of fuel economy and environmental regulations require the development of lightweight components and new manufacturing technologies. The aluminum tube hydroforming is a manufacturing process which can provide lightweight components as automotive parts. In this paper, the hydroformability of aluminium tube in different condition of bending process is presented. An investigation has been conducted on how to control the deformed shape and its effect on thinning distribution after hydroforming by using finite element simulation. Finite element simulation of tube hydroforming for automotive trailing arm is carried out to explore the effect of 2-dimensional and 3-dimensional bending.
임희택(Hee-Taek Lim),이광대(Kwang-Dae Lee),전당희(Dang-Hee Jeon),윤종현(Jong-Hyun Youn),주익덕(Ik-Deok Joo) 대한전기학회 2018 전기학회논문지 Vol.67 No.2
Spent fuel is moved from the reactor into the spent fuel pool when nuclear power plant permanently shutdown. The sole function of a permanently defueled facility is to store spent fuel in a quiescent state. The function of electric system and loads are reduced. It is necessary to establish an operating strategy of electric system in the permanent shutdown nuclear plant. This paper reviews required loads and design criteria considering transition to permanent shutdown. An operating strategy of onsite electric system is proposed considering decommissioning strategy and stage of defueled condition.
비접지 계통에서 영상전류 위상을 이용한 고장표시 생성 알고리즘
林熙澤(Hee-Taek Lim),林一亨(Il-Hyung Lim),崔勉松(Myeon-Song Choi),李承宰(Seung-Jae Lee) 대한전기학회 2008 전기학회논문지 Vol.57 No.7
Most faults are single-phase-to-ground fault in ungrounded system. The fault currents of single-phase-to-ground are much smaller than detection thresholds of measurement devices, so detecting single-phase-to-ground faults is difficult and important in ungrounded system. This paper proposed to a FI(Fault Indicator) generation algorithm in ungrounded system. The algorithm just using line-to-line voltage and zero-sequence current detects fault line, fault phase, fault section and FI(Fault Indicator) at terminal device, This paper also proposed to application plan for this algorithm. In the case study, the proposed algorithm has been testified in demo system by Matlab/Simulink simulations.
DEP를 이용한 세포 외부 ATP 제거 전처리 미세 유로의 개발
임희택(Hee Taek Lim),정효일(Hyo-Il Jung) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
In the detection of pathogenic microorganisms ATP-bioluminescence reaction is a fascinating method. ATP(adenosine triphosphate) is an energy source of all kinds of living organism and ATP-bioluminescence reaction uses this ATP. However, ATP exists not only in the cells but also outside the cells. Therefore ATP-bioluminescence reaction only with intracellular ATP is very important in pathogenic microorganism detection. Because of that reason we developed a microfluidic channel containing Dielectrophoretic zone which capture microorganisms and eliminating and washing extracellular ATP with ATP-degarading enzymes, adenosine phosphate deaminase and apyrase. Microorganisms are captured by pDEP force at the DEP electrode zone and only extracellular ATPs are washed and eliminated outside the zone.