Results 11 to 20 of about 154,355 (274)
Scientific ReportsThe Max-Mixed EWMA Exponentially Weighted Moving Average (MM EWMA) control chart is a statistical process control technique used for joint monitoring of the mean and variance of a process.
Seher Malik +6 more
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Connection Science, 2022 The mixed control chart is proposed to improve detection performance with fewer process shifts. In this study, we proposed the modified exponentially weighted moving average - moving average control chart (MMEM), a new mixed control chart for observing ...
Khanittha Talordphop +2 more
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The performance of the truncated mixed control chart
Communications in Statistics - Theory and Methods, 2018 When the mixed chart proposed by Aslam et al. (2015) is in use, the sample items are classified as defective or not defective and, depending on the number of defectives, the quality characteristic ...
Roberto Campos Leoni +1 more
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Mathematics, 2023 The control chart is a fundamental tool in statistical process control (SPC), widely employed in manufacturing and construction industries for process monitoring with the primary objective of maintaining quality standards and improving operational ...
Aamir Majeed Chaudhary +5 more
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TheT2chart with mixed samples to control bivariate autocorrelated processes [PDF]
International Journal of Production Research, 2015 In this paper, we propose the use of the T2 chart with the mixed sampling strategy (MS) to monitor the mean vector of bivariate processes with observations that fit to a first-order vector autoregressive model. With the MS, rational subgroups of size n are taken from the process and the selected units are regrouped to form the mixed samples.
Leoni, Roberto Campos +2 more
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A Bayesian Control Chart for Monitoring Process Variance
Applied Sciences, 2021 Automation in the service industry is emerging as a new wave of industrial revolution. Standardization and consistency of service quality is an important part of the automation process.
Chien-Hua Lin +3 more
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An EWMA-DiD Control Chart to Capture Small Shifts in the Process Average Using Auxiliary Information
Technologies, 2018 Among the Statistical Process Control (SPC) techniques, control charts are considered to be high weight-age due to their effectiveness in process variation.
Muhammad Anwar Mughal +2 more
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Scientific ReportsIn this work, the mixed multivariate T 2 control chart’s detailed performance evaluation based on PCA mix is explored. The control limit of the proposed control chart is calculated using the kernel density approach.
Muhammad Ahsan +3 more
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Control Chart T2Qv for Statistical Control of Multivariate Processes with Qualitative Variables
Mathematics, 2023 The scientific literature is abundant regarding control charts in multivariate environments for numerical and mixed data; however, there are few publications for qualitative data. Qualitative variables provide valuable information on processes in various
Wilson Rojas-Preciado +3 more
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PLoS ONEThis study aims to develop a nonparametric mixed exponentially weighted moving average-moving average (NPEWMA-MA) sign control chart for monitoring shifts in process location, particularly when the distribution of a critical quality characteristic is ...
Muhammad Ali Raza +5 more
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