淡江大學機構典藏:Item 987654321/69198
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/69198


    Title: Implementing lifetime performance index of products with two-parameter exponential distribution
    Authors: Lee, Hsiu-Mei;Wu, Jong-Wuu;Lei, Chia-Ling;Hung, Wen-Liang
    Contributors: 淡江大學統計學系
    Keywords: reliability;reliability testing;two-parameter exponential distribution;censored sample;UMVUE
    Date: 2011-08
    Issue Date: 2011-10-23 16:34:27 (UTC+8)
    Publisher: Abingdon: Taylor & Francis
    Abstract: 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.
    Relation: International Journal of Systems Science 42(8), pp.1305-1321
    DOI: 10.1080/00207721.2010.494774
    Appears in Collections:[Graduate Institute & Department of Statistics] Journal Article

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