V2EX special cause

Special Cause

定义 (Definition)

special cause:指“特殊原因(变异)”,即由某个可识别、非系统性、非随机的因素引起的波动或问题,常用于统计过程控制(SPC)与质量管理中(相对的是 common cause“共同原因/系统性原因”)。在一般英语里也可泛指“某个特定的原因”,但最常见的专业用法来自质量与过程管理语境。

发音 (Pronunciation, IPA)

/spl kz/

例句 (Examples)

The defect was traced to a special cause: a loose sensor.
这个缺陷被追查到一个特殊原因:一个松动的传感器。

Although the process is usually stable, a special cause last weekan untrained operator and a rushed schedulepushed the error rate above the control limits.
虽然这个流程通常很稳定,但上周的一个特殊原因未经培训的操作员加上紧张的排期使错误率超过了控制界限。

词源与背景 (Etymology & Background)

“special cause”直译为“特殊的原因”。在质量管理与统计领域,它作为术语与沃尔特A休哈特(Walter A. Shewhart)的控制图思想密切相关,用来区分两类变异来源:

  • common causes:系统内部长期存在的、随机的小波动(需要改系统来解决)
  • special causes:由某个具体事件/异常触发的波动(需要找出并消除该异常)

相关词 (Related Words)

文学与著作中的用例 (Literary / Notable Works)

  • Walter A. Shewhart, Economic Control of Quality of Manufactured Product(质量控制经典著作,讨论“可归因原因/特殊原因”与控制图思想)
  • W. Edwards Deming, Out of the Crisis(用“common cause / special cause”框架解释管理与质量改进)
  • W. Edwards Deming, The New Economics for Industry, Government, Education(延续并推广“特殊原因/共同原因”在组织管理中的应用)
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