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6σ改进主要应用于现有的过程或产品, 而6σ设计主要应用于设计或重新设计过程或产品;何时优先采用6σ设计方法一直是一个备受争议的问题.为解决这一问题,比较了6σ改进和6σ设计方法的差异;进而从系统论的观点,分析了选择6σ方法时需要考虑的要素并建立了相应的指标体系;在此基础上,引入了多目标决策的层次分析方法,并对一个6σ项目进行了分析.结果表明,选择6σ方法受到许多因素的影响,从而替代了6σ文献中"只有达到4.8σ,才能实施6σ设计"的准则.结论是任何实施6σ管理的组织可以根据技术、顾客需求、成本、复杂性、风险等因素,选择适应于自身发展的6σ方法. 相似文献
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《Quality Engineering》2012,24(4):401-417
ABSTRACT Health care has become one of the most important industries in the world, employing 13.4 million people, generating 3.2 million new jobs, and employing professionals from 10 of the 20 fastest growing occupations. Health care is also becoming more expensive and so there is a critical need to increase the efficiency of the health care delivery process. In this article, we look at the patient discharge process at a hospital in Amman, Jordan, with the objective of minimizing the discharge time without significantly increasing costs. This was done by building a simulation model of the discharge process and then optimizing it with a designed experiment and response surface model. This resulted in a 57% improvement in patients being discharged in less time than the goal of 50 minutes. 相似文献