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Erschienen in:
1995 | OriginalPaper | Buchkapitel
Coherent Systems in Profust Reliability Theory
verfasst von : Kai-Yuan Cai, Chuan-Yuan Wen, Ming-Lian Zhang
Erschienen in: Reliability and Safety Analyses under Fuzziness
Verlag: Physica-Verlag HD
Enthalten in: Professional Book Archive
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Profust reliability theory is based on the probability assumption and the fuzzy-state assumption. In an attempt to provide a uniform foundation for profust reliability theory, in this paper we introduce the concept of coherent systems and distinguish two classes of systems: closely coherent systems and loosely coherent systems. To formulate the relationships between system reliabilities and component reliabilities, we present a number of general results, results concerning convexity, and results concerning unimodality. It is argued that for a coherent system, component reliability improvements don’t certainly enhance the system reliability.