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政大機構典藏 > 商學院 > 統計學系 > 期刊論文 > Item 140.119/18149

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/18149

Title:	Controlling-dependent process steps using variable sample size control charts
Authors:	楊素芬;Su, Hui-Chun Yang, Su-Fen;Su, Hui-Chun
Keywords:	dependent process steps;control scheme;variable sample size
Date:	2006-12
Issue Date:	2008-12-19 14:51:02 (UTC+8)
Abstract:	The article considers the variable process control scheme for two dependent process steps. We construct variable sample size (VSS) ZX̄ and Zē control charts to effectively monitor the quality variable produced by the first process step and the quality variable produced by the second process step 2, respectively. The performance of the proposed VSS control charts is measured by the adjusted average time to signal (AATS) using a Markov chain approach. An example of producing cotton yarn system shows the application and performance of the proposed VSS ZX̄ and Zē control charts in detecting shifts in process mean. Furthermore, the performance of the VSS ZX̄ and Zē control charts and the fixed sample size (FSS) ZX̄ and Zē control charts are compared by numerical analysis results. These demonstrate that the former is much faster in detecting small shifts in mean.
Relation:	Applied Stochastic Models in Business and Industry 22,503-517
Data Type:	article
Appears in Collections:	[統計學系] 期刊論文

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