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Fitz-Hugh-Curtis 증후군의 임상양상 : 25예의 분석
양현웅 ( Hyeon Woong Yang ),정성희 ( Sung Hee Jung ),한현영 ( Hyun Young Han ),김안나 ( An Na Kim ),이윤정 ( Yun Jung Lee ),차상우 ( Sang Woo Cha ),고훈 ( Hun Go ),최기영 ( Gi Young Choi ),조성훈 ( Soung Hoon Cho ),임신형 ( Sin H 대한간학회 2008 Clinical and Molecular Hepatology(대한간학회지) Vol.14 No.2
초기설치비를 고려한 의존적 k-out-of-n:G 시스템의 보전정책 결정
신현재,조성훈,안동규,성혁제 한국산업안전학회 1999 한국안전학회지 Vol.14 No.2
In estimating the system reliability, most widely used method is to estimate the systems reliability from components reliability. In this case, it assumes that components failure is mutually independent, but it may not true in real systems. In this study, the mean cost per unit time is computed as the ratio of mean life to the mean cost. The mean life is obtained by the reliability function under power rule model. The mean cost is obtained by the mathematical model based on the inspection interval. A heuristic method is proposed to determine the optimal number of redundant units and the optimal inspection interval to minimize the mean cost per unit time. The assumptions of this study are as following : First, in the load-sharing k-out-of-n:G system, total loads are applied to the system and shared by the operating components. Secondly, the number of failed components affects the failure rate of surviving components as a function of the total load applied. Finally, the relation between the load and the failure rate of surviving components is set by the power rule model. For the practical application of the above methods, numerical examples are presented.