Results 31 to 40 of about 5,815 (232)
Symmetry of gamma distribution data about the mean after processing with EWMA function
Scientific Reports, 2023 Statistical Process Control (SPC) plays a vital role in maintaining quality and reducing variability in manufacturing processes. Among SPC techniques, the Exponentially Weighted Moving Average (EWMA) stands out for its ability to detect small process ...
Mohammad M. Hamasha +7 more
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Periodicals of Engineering and Natural Sciences (PEN), 2021 Any production process that needs statistical control to exit the production process as required, whether from the consumer or producer point of view, and in this research a comparison was made between the two control charts of the modified and traditional exponential weighted moving average chart.The modified chart takes into consideration the ...
Aida Hadi Saleh, Nabaa Naeem Mahdi
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A STUDY OF THE MEDIAN RUN LENGTH (MRL) PERFORMANCE OF THE EWMA t CHART FOR THE MEAN
South African Journal of Industrial Engineering, 2012 The exponentially weighted moving average (EWMA) chart is effective in detecting small shifts. However, the EWMA chart is not robust enough to prevent errors in estimating the process standard deviation or a changing standard deviation.
Chin, W. S., Khoo, M. B. C.
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Comparative Analysis Between EWMA, DEWMA and Mixed Tukey EWMA Control Chart
Academic Science Journal, 2023 The control chart is a good tool for monitoring. Single and double exponential weighted moving average control charts are suitable charts to detect small shifts in the process parameters.
Kawa M. Jamal Rashid , Sozan S. Haydar
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Scientific Reports, 2023 Control charts, including exponentially moving average (EWMA) , are valuable for efficiently detecting small to moderate shifts. This study introduces a Bayesian EWMA control chart that employs ranked set sampling (RSS) with known prior information and ...
Imad Khan +4 more
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Assessing the use of the moving window approaches when monitoring social networks using a degree corrected stochastic block model [PDF]
Review of Economics and Political Science, 2021 Purpose – This study aims to assess the effect of updating the Phase I data – to enhance the parameters' estimates – on the control charts' detection power designed to monitor social networks. Design/methodology/approach – A dynamic version of the degree
Abeer A. Zaki +2 more
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A Robust Exponentially Weighted Moving Average Control Chart for the Process Mean [PDF]
, 2005 To date, numerous extensions of the exponentially weighted moving average, EWMA charts have been made. A new robust EWMA chart for the process mean is proposed.
Khoo, Michael B. C., Sim, S. Y.
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Design of an Exponentially Weighted Moving Average (EWMA) and An Exponentially Weighted Root Mean Square (EWRMS) Control Chart [PDF]
, 2017 Some of the most widely-used form of control charts Walter Shewhart charts are sensitive to detecting relatively large shifts in the process. On Shewhart charts every observation is plotted independently of previous observations.The quantity plotted on ...
Rashid, A. P. (Asst)
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A Double Sampling Scheme for Process Mean Monitoring
IEEE Access, 2017 Mean control charts are effective tools for detecting mean shifts of an interesting quality variable in both manufacturing processes and service processes.
Su-Fen Yang, Sin-Hong Wu
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Mathematics, 2022 In addition to monitoring the Poisson mean rate with step shifts, increasing attention has been given to monitoring Poisson processes subject to linear trends.
Honghao Zhao +3 more
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