Results 111 to 120 of about 4,710 (223)
Production, 2011 In practice, sometimes the process data did not come from a known population distribution. So the commonly used Shewhart variables control charts are not suitable since their performance could not be properly evaluated.
Yang Su-Fen +4 more
doaj
The design of EWMA control charts for censored data under Gompertz lifetime distribution
, 2010 碩士基於操作上的便利，斯華特管制圖成為品質管制中最常被使用的管制圖之一。由於科技的進步，產品的壽命愈來愈長，所以廠商在檢驗產品壽命是否符合規格時，基於成本考量，常常會收集到設限的資料(不完整資料)，而無法得知所有受測產品真正的壽命。在此情況下，如果仍採用傳統的斯華特管制圖來監控製程是不恰當的。Steiner & Mackay(2000)提出了CEV X-bar管制圖，來代替原本的X-bar管制圖，CEV X-bar管制圖在型I右設限資料下的偵測效果比傳統的X-bar管制圖來的好，而且更具有其理論價值 ...
林貞君; Lin, Chen-chun
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Performance Comparisons of EWMA Control Chart Schemes
, 2010 Combining an EWMA chart with a Shewhart chart is traditionally recommended as a means of providing good protection against both small and large shifts in the process mean.
Epprecht, Eugenio K. +2 more
core +1 more source
Linear profile monitoring using EWMA structure under ranked set schemes
, 2017 In many manufacturing processes, study variable is not the only quality characteristic, but there may exist some explanatory variable(s) that are associated with the study variable.
Riaz, Muhammad +4 more
core +1 more source
Quality Engineering The CUSUM and the EWMA Head-to-Head The CUSUM and the EWMA Head-to-Head
, 2014 The cumulative sum (CUSUM) and the exponentially weighted moving average (EWMA) control charts are alternatives to the Xbar chart. The CUSUM's theoretical optimality suggests that it should outperform the EWMA for detecting persistent shifts, but ...
Qifan Wu, Douglas M Hawkins
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, 2016 งานวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาวิธีการประมาณค่าความยาววิ่งเฉลี่ย (Average Run Length: ARL) ของแผนภูมิควบคุม Arcsine EWMA Sign แบบไม่ใช้พารามิเตอร์โดยวิธีลูกโซ่มาร์คอฟ (Markov Chain Approach: MCA) และเปรียบเทียบเวลาที่ใช้ในการประมวลผล (CPU Times) กับวิ
อารีพงษ์, ยุพาภรณ์; ภาควิชาสถิติประยุกต์ คณะวิทยาศาสตร์ประยุกต์ มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ +2 more
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An alternative approach to multivariate EWMA control chart
This Paper proposes a multivariate EWMA scheme that is alternative to the traditional EWMA-M. The distribution of the chart statistic is derived from Box quadratic form and the sensitivity of the chart is examined.
Xia Pan
core +1 more source
Slow drift aware dynamic risk assessment in cyber physical systems using quantum neutrosophic fuzzy modelling. [PDF]
Sci RepKiruthika K +3 more
europepmc +1 more source
, 2019 Statistika pengendalian kualitas adalah teknik penyelesaian masalah yang digunakan untuk memonitor, mengendalikan, menganalisis, mengelola, memperbaiki produk dan proses menggunakan metode-metode statistika.
Agustini, Irma
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