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    题名: Implementing lifetime performance index of products with two-parameter exponential distribution
    作者: Lee, Hsiu-Mei;Wu, Jong-Wuu;Lei, Chia-Ling;Hung, Wen-Liang
    贡献者: 淡江大學統計學系
    关键词: reliability;reliability testing;two-parameter exponential distribution;censored sample;UMVUE
    日期: 2011-08
    上传时间: 2011-10-23 16:34:27 (UTC+8)
    出版者: Abingdon: Taylor & Francis
    摘要: The manufacturing industry has prioritised enhancing the quality, lifetime and conforming rate of products. Process capability indices (PCIs) are used to measure process potential and performance. The process capability is evaluated with product survival time and a longer lifetime implies a better process capability and a higher reliability. In order to save experimental time and cost, a censored sample arises in practice. In the case of product possessing a two-parameter exponential distribution, this study constructs a uniformly minimum variance unbiased estimator (UMVUE) of the lifetime performance index based on the type II right-censored sample. Then the UMVUE of the lifetime performance index is utilised to develop the new hypothesis testing procedure in the condition of known lower specification limit. Finally, two practical examples are illustrated to employ the testing procedure to determine whether the product is reliable.
    關聯: International Journal of Systems Science 42(8), pp.1305-1321
    DOI: 10.1080/00207721.2010.494774
    显示于类别:[統計學系暨研究所] 期刊論文


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