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    政大機構典藏 > 商學院 > 統計學系 > 期刊論文 >  Item 140.119/18038
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/18038


    Title: Statistical process control for two-grade products
    Authors: 楊素芬
    Yang,Su-Fen;Yang,Tar-Hsing
    Date: 2000.03
    Issue Date: 2008-12-19 09:13:05 (UTC+8)
    Abstract: In this paper, we propose an efficient approach to distinguish which process step is out of control and examine which kind of special cause occurs the shift of process means for two-grade products produced from two dependent processes. Two EWMA control charts are proposed to detect if the first kind of special causes, which affect one of the two-grade products, occur; and a combined EWMA control chart is designed to examine if another kind of special causes, which affect both the two-grade products, occur in the previous process. Two EWMA-type cause-selecting control charts are proposed to examine if the first kind of special causes, which affect the interested quality characteristic for each grade products, occur in the previous process. A combined cause-selecting control chart is designed to detect if another kind of special causes, which affect both the interested quality characteristics for two-grade products, occur in the current process. A simulated data analysis shows our proposed control charts are superior to Shewhart control charts and Hotelling T2 control charts in distinguishing which process is out of control and detecting which kind of special causes occur for two-grade products.
    Relation: Journal of Chinese Institute of Industrial Engineer,18(1),25-44
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1080/10170660109509445
    DOI: 10.1080/10170660109509445
    Appears in Collections:[統計學系] 期刊論文

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