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    政大機構典藏 > 商學院 > 企業管理學系 > 期刊論文 >  Item 140.119/100731
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    題名: Burn-in Time and Estimation of Change-Point with Weibull-Exponential Mixture Distribution
    作者: 唐揆
    Chou, Kwei;Tang, Kwei
    貢獻者: 企管系
    關鍵詞: Quality Control;Statistical Techniques
    日期: 1992-07
    上傳時間: 2016-08-24 17:42:54 (UTC+8)
    摘要: Many industrial products have three phases in their product lives: infant-mortality, normal, and wear-out phases. In the infant-mortality phase, the failure rate is high, but decreasing; in the normal phase, the failure rate remains constant; and in the wear-out phase, the failure rate is increasing. A burn-in procedure may be used to reduce early failures before shipping a product to consumers. A cost model is formulated to find the optimal burn-in time, which minimizes the expected sum of manufacturing cost, burn-in cost, and warranty cost incurred by failed items found during the warranty period. A mixture of Weibull hyperexponential distribution with shape parameter less than one and exponential distribution is used to describe the infant-mortality and the normal phases of the product life. The product under consideration can be either repairable or non-repairable. When the change-point of the product life distribution is unknown, it is estimated by using the maximum-likelihood estimation method. The effects of sample size on estimation error and the performance of the model are studied, and a sensitivity analysis is performed to study the effects of several parameters of the W-E distribution and costs on the optimal burn-in time.
    關聯: Decision Sciences, 23(4), 973-990
    資料類型: article
    DOI 連結: http://dx.doi.org/10.1111/j.1540-5915.1992.tb00429.x
    DOI: 10.1111/j.1540-5915.1992.tb00429.x
    顯示於類別:[企業管理學系] 期刊論文

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