Results 11 to 20 of about 207,892 (289)
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
openaire +4 more sources
Nonparametric mixed exponentially weighted moving average-moving average control chart
Scientific ReportsThis research designed a distribution-free mixed exponentially weighted moving average-moving average (EWMA-MA) control chart based on signed-rank statistic to effectively identify changes in the process location.
Muhammad Ali Raza +5 more
doaj +2 more sources
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
doaj +2 more sources
A Mixed Control Chart Adapted to the Truncated Life Test Based on the Weibull Distribution
Operations Research and Decisions, 2017 The design of a new mixed attribute control chart adapted to a truncated life test has been presented. It was assumed that the lifetime of a product follows the Weibull distribution and the number of failures was observed using a truncated life test ...
Nasrullah Khan +3 more
doaj +2 more sources
Multivariate Mixed EWMA-CUSUM Control Chart for Monitoring the Process Variance-Covariance Matrix [PDF]
IEEE Access, 2019 The dispersion control charts monitor the variability of a process that may increase or decrease. An increase in dispersion parameter implies deterioration in the process for an assignable cause, while a decrease in dispersion indicates an improvement in
Muhammad Riaz +3 more
doaj +2 more sources
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
doaj +2 more sources
Modeling the patient mix for risk-adjusted CUSUM charts [PDF]
Statistical Methods in Medical Research, 2022 The improvement of surgical quality and the corresponding early detection of its changes is of increasing importance. To this end, sequential monitoring procedures such as the risk-adjusted CUmulative SUM chart are frequently applied. The patient risk score population (patient mix), which considers the patients’ perioperative risk, is a core component
openaire +2 more sources
New Designing Mixed Double Moving Average-Cumulative Sum Control Chart for Detecting Mean Shifts with Symmetrically and Asymmetrically Distributed Observations [PDF]
, 2023 Herein, we present a new control chart called the mixed double moving average-cumulative sum control chart (DMA-CUSUM: MDC) used for detecting shifts in the process mean when symmetrically and asymmetrically distributed.
Areepong, Yupaporn; Department of Applied Statistics, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand +2 more
core +1 more source
PLoS ONE, 2022 Control charts are an amazing and essential statistical process control (SPC) instrument that is commonly used in monitoring systems to detect a specific defect in the procedure.
Khanittha Talordphop +2 more
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Exponentially weighted moving average-Moving average charts for monitoring the process mean.
PLoS ONE, 2020 This research aimed to propose a newly-mixed control chart called the Exponentially Weighted Moving Average-Moving Average Chart (EWMA-MA) to detect the mean change in a process underlying symmetric and asymmetric distributions.
Saowanit Sukparungsee +2 more
doaj +1 more source