Results 31 to 40 of about 154,355 (274)

Impact of Measurement Error on Mixed EWMA-CUSUM Control Chart [PDF]

open access: yesScientia Iranica, 2020
In statistical process control, measurement error plays an important role which is usually ignored. Measurement error can lead to incorrect conclusions about the performance of the process. In this paper, we examined the effect of measurement error on the shift detection ability of the mixed exponentially weighted moving average-cummulative sum (EWMA ...
openaire   +1 more source

Design of a New Tukey MA-DEWMA Control Chart to Monitor Process and its Applications

open access: yesIEEE Access, 2021
Control chart is a useful statistical tool for the production process control to maintain the product value at the standard. The objectives of this research were to propose the Tukey Moving Average - Double Exponentially Weighted Moving Average control ...
Rattikarn Taboran   +2 more
doaj   +1 more source

Mixed Exponentially Weighted Moving Average—Moving Average Control Chart with Application to Combined Cycle Power Plant

open access: yes, 2023
Statistical process control (SPC) consists of various tools for effective monitoring of the production processes and services to ensure their stable and satisfactory performance.
Tahir Nawaz   +5 more
core   +1 more source

Exploring variations in childhood stunting in Nigeria using league table, control chart and spatial analysis [PDF]

open access: yes, 2013
Background: Stunting, linear growth retardation is the best measure of child health inequalities as it captures multiple dimensions of children’s health, development and environment where they live.
Mudasiru, Oludare M.   +8 more
core   +1 more source

Monitoring of Mean Processes with Mixed Moving Average – Modified Exponentially Weighted Moving Average Control Charts [PDF]

open access: yes, 2023
In Statistical Process Control, a control chart is the most effective equipment for monitoring and improving processes. Classic control charts were created in the past and were effective at detecting both small and large changes.
Sukparungsee, Saowanit; Department of Applied Statistics, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand   +2 more
core   +1 more source

สูตรสำเร็จค่าความยาวรันเฉลี่ยของแผนภูมิควบคุมผสมค่าเฉลี่ยเคลื่อนที่-ค่าเฉลี่ยเคลื่อนที่ถ่วงน้ำหนักแบบเลขชี้กำลังExplicit Formulas of Average Run Length for Mixed Moving Average – Exponentially Weighted Moving Average Control Chart

open access: yes, 2022
งานวิจัยนี้มีวัตถุประสงค์เพื่อนำเสนอวิธีการประมาณค่าความยาวรันเฉลี่ยด้วยวิธีสูตรสำเร็จของแผนภูมิควบคุมค่าเฉลี่ยเคลื่อนที่-ค่าเฉลี่ยเคลื่อนที่ถ่วงนํ้าหนักแบบเลขชี้กำลัง (MA-EWMA) โดยเปรียบเทียบประสิทธิภาพการตรวจจับการเปลี่ยนแปลงกับแผนภูมิควบคุมค่าเฉล ...
Phantu, Suganya; Data Science and Computation Program, Faculty of Sciences, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong   +2 more
core   +1 more source

Robust control chart based on mixed-effects modeling framework: A case study in NAND flash memory industry

open access: yes, 2023
In this research, we analyze the real data in the NAND Flash memory industry using a control chart. There are thousands of electrical measures for each NAND Flash memory chip. We monitor these data through a control chart to ensure that the manufacturing
Seonghui Huh (16954338)   +8 more
core   +1 more source

A collaboration to improve perioperative acute pain care at the University Teaching Hospital of Butare, Rwanda

open access: yesRwanda Medical Journal, 2022
BACKGROUND: A perioperative acute pain care program integrating standardized assessment and treatment forms into pain care was developed and implemented at an urban hospital in Rwanda through a collaboration between Rwandan and Canadian experts.
J. Baumhour   +6 more
doaj   +2 more sources

Crude versus case-mix-adjusted control charts for safety monitoring in thyroid surgery [PDF]

open access: yesBMJ Quality & Safety, 2010
Patient-safety monitoring based on health-outcome indicators can lead to misinterpretation of changes in case mix. This study aimed to compare the detection of indicator variations between crude and case-mix-adjusted control charts using data from thyroid surgeries.The study population included each patient who underwent thyroid surgery in a teaching ...
Antoine, Duclos   +7 more
openaire   +2 more sources

A Robust TEWMA–MA Control Chart Based on Sign Statistics for Effective Monitoring of Manufacturing Processes

open access: yesMathematics
A nonparametric control chart is a type of control chart that does not rely on assumptions regarding the underlying distribution of the data. This characteristic provides greater flexibility and robustness, particularly when handling non-normal data ...
Piyatida Saesuntia   +2 more
doaj   +1 more source

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