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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Lusser's law ： ウィキペディア英語版 Lusser's law Lusser's law in systems engineering is a prediction of reliability. Named after engineer Robert Lusser, and also known as ''Lusser's product law'' or the ''probability product law of series components'', it states that the reliability of a series system is equal to the product of the reliability of its component subsystems, if their failure modes are known to be statistically independent. For a series of ''n'' components, this is expressed as: :$R\_s=\backslash prod\_^N\; r\_i=r\_1\; \backslash times\; r\_2\; \backslash times\; r\_3\; \backslash times\; ...\; \backslash times\; r\_n$ where ''Rs'' is the overall reliability of the system, and ''rn'' is the reliability of the ''n''th component. Lusser's law has been described as the idea that a series system is "weaker than its weakest link", as the product reliability of a series of components can be less than the lowest-value component. For example, given a series system of two components with different reliabilities — one of 0.95 and the other of 0.8 — Lusser's law will predict a reliability of :$R\_s\; =\; 0.95\; \backslash times\; 0.8\; =\; 0.76$ which is lower than either of the individual components. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lusser's law」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.