English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49378/84106 (59%)
造訪人次 : 7363020      線上人數 : 77
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/106883

    題名: A General Nonparametric Model For Accelerated Life Testing With Time-Dependent Covariates
    作者: 徐煥智
    日期: 1996-10-01
    上傳時間: 2016-06-14 10:08:17 (UTC+8)
    摘要: This dissertation introduces a general nonparametric or "distribution-free" model to
    analyze the lifetime of components under accelerated life testing. Unlike the accelerated
    failure time (AFT) models, the proposed model shares the advantage of being
    "distribution-free" with the proportional hazard (PH) mod~l and overcomes the deficiency
    of the PH model not allowing survival curves corresponding to different values of a
    covariate to cross.
    The extended hazard regression (EHR) model has been successfully used in
    analyzing the survival time data of non-homogeneous populations in. the medical field. It
    is a general model which encompasses both the PH and the AFT models as special cases.
    We investigate the EHR model and find it also appears to be flexible and useful in the
    reliability field.
    In this research, we extend and modify the EHR model using the partial likelihood
    function to analyze failure data with time dependent covariates. The new model can be
    easily adopted to create an accelerated life testing model with different types of stress
    loading. For example, stress loading in accelerated life testing can be a step function,cyclic, or a linear function .with time. These types of stress loading reduces the testing time and increases the number of failures of components under test.
    The proposed new EHR model with time dependent covariates which incorporates multiple stress loadings requires further verification. Therefore, we conduct an accelerated life test in the laboratory by subjecting components to time dependent stresses and we compare the reliability estimation based on the developed model with that obtained from the experimental results. The combination of the theoretical development of the accelerated life testing model verified by laboratory experiments offers a unique perspective to reliability model building and verification.
    顯示於類別:[資訊管理學系暨研究所] 學位論文


    檔案 描述 大小格式瀏覽次數
    摘要.pdf41KbAdobe PDF39檢視/開啟
    目錄.pdf77KbAdobe PDF49檢視/開啟



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋