English  |  正體中文  |  简体中文  |  Items with full text/Total items : 87250/116203 (75%)
Visitors : 23279526      Online Users : 434
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    政大機構典藏 > 商學院 > 統計學系 > 期刊論文 >  Item 140.119/46079
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/46079


    Title: Using VSI EWMA charts to monitor dependent process steps with incorrect adjustment
    Authors: 楊素芬
    Yang,Su-Fen;Yu,Yi-Ning
    Keywords: Control charts;Dependent process steps;Incorrect adjustment;Markov chain
    Date: 2009.01
    Issue Date: 2010-10-06 11:21:08 (UTC+8)
    Abstract: The article considers the variable process control scheme for two dependent process steps with incorrect adjustment. Incorrect adjustment
    of a process may result in shifts in process mean, ultimately affecting the quality of products. We construct variable sampling interval
    (VSI) EWMAZX and EWMAZe control charts to effectively monitor the quality variable produced by the first process step with
    incorrect adjustment and the quality variable produced by the second process step with incorrect adjustment. The performance of the
    proposed VSI control charts is measured by the adjusted average time to signal (AATS) derived using a Markov chain approach. An
    example of the automobile braking system with incorrect adjustment shows the application and performance of the proposed VSI
    EWMAZX and EWMAZe control charts in detecting shifts in process mean. Furthermore, the performance of the proposed VSI
    EWMAZX and EWMAZe control charts and the fixed sampling interval (FSI) EWMAZX and EWMAZe control charts are compared
    by numerical analysis results. These demonstrate that the former is much faster in detecting small and median shifts in mean. The optimum
    VSI EWMAZX and EWMAZe control charts are also proposed using optimization technique to minimize AATS when quality engineers
    cannot specify the values of variable sampling intervals. It has been found that the optimum VSI EWMAZX and EWMAZe control
    charts always work better than the VSI EWMAZX and EWMAZe control charts.
    Relation: Expert System and Application,36(1),442-454
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1016/j.eswa.2007.09.036
    DOI: 10.1016/j.eswa.2007.09.036
    Appears in Collections:[統計學系] 期刊論文

    Files in This Item:

    File Description SizeFormat
    442.pdf240KbAdobe PDF1092View/Open


    All items in 政大典藏 are protected by copyright, with all rights reserved.


    社群 sharing

    著作權政策宣告
    1.本網站之數位內容為國立政治大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,惟仍請適度,合理使用本網站之內容,以尊重著作權人之權益。商業上之利用,則請先取得著作權人之授權。
    2.本網站之製作,已盡力防止侵害著作權人之權益,如仍發現本網站之數位內容有侵害著作權人權益情事者,請權利人通知本網站維護人員(nccur@nccu.edu.tw),維護人員將立即採取移除該數位著作等補救措施。
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback