Shuichi Shinmori

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The present paper considers multi-state systems which are regarded as a generalization of binary systems, and generalizes the concepts of BW systems proposed by R. E. Barlow and Alexander S. Wu. Since the structure function of a BW system is defmed by using tht: minimal path sets of a binary coherent system, the BW system has a strict restriction that the(More)
In many network design problems, the best layout of components is searched considering construction cost and network reliability. Because of #P-completeness for computation of network reliability, most algorithms for the problems find approximate solutions. In this paper, we propose a complete enumer-ation method for the network design problems, which(More)
SUMMARY All-terminal reliability is one of the measurements to evaluate the reliability for network systems. Since it may need exponential time of the network size to compute the exact value of all-terminal reliability, it is important to calculate its tight approximate value, especially its lower bound, at a moderate calculation time. Ramanathan and(More)
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