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Linear profile monitoring using EWMA structure under ranked set schemes
(
Springer London
, 2017 , Article)
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. This association may be linear or nonlinear ...
Mixed EWMA-CUSUM and mixed CUSUM-EWMA modified control charts for monitoring first order autoregressive processes
(
Taylor and Francis Ltd.
, 2017 , Article)
In practice most processes are known to produce autocorrelated observations. Autocorrelation degrades the performance of control charts by producing frequent false alarms when the process is stable or makes the charts ...
Efficient cv control charts based on ranked set sampling
(
Institute of Electrical and Electronics Engineers Inc.
, 2019 , Article)
Monitoring process variability is essential for establishing efficient process-control schemes. In practice, when the mean levels of a parameter are constant, and the process variance (or standard deviation) is independent ...
An enhanced nonparametric EWMA sign control chart using sequential mechanism
(
Public Library of Science
, 2019 , Article)
Control charts play a significant role to monitor the performance of a process. Nonparametric control charts are helpful when the probability model of the process output is not known. In such cases, the sampling mechanism ...
Poisson progressive mean control chart
(
John Wiley and Sons Ltd
, 2017 , Article)
In real life applications, many process-monitoring problems in statistical process control are based on attribute data resulting from quality characteristics that cannot be measured on numerical or quantitative scales. For ...
On Model Selection for Autocorrelated Processes in Statistical Process Control
(
John Wiley and Sons Ltd
, 2017 , Article)
Using traditional control charts to monitor autocorrelated processes is not beneficial, because it will lead us to misleading detections in the processes. One of the methods used to deal with the control charts for ...
Directionally sensitive homogeneously weighted moving average control charts
(
Wiley
, 2021 , Article)
One-sided control charts for monitoring changes in the mean level are proposed in this paper. The proposed charts are given in the form of a homogeneously weighted moving average technique that provides efficient monitoring ...
Phase II monitoring of linear profiles with random explanatory variable under Bayesian framework
(
Elsevier
, 2019 , Article)
Linear profiles monitoring have been successfully implemented in many industrial applications. The design structures of control charts for profiles monitoring are mostly based on two major classifications namely Classical ...
An improved adaptive EWMA control chart for monitoring time between events with application in health sector
(
John Wiley and Sons Ltd
, 2023 , Article)
Nonconforming events rarely occur in high-quality processes, and the time between events ((Formula presented.)) is likely to be followed by a skewed distribution, such as an exponential distribution. This paper proposes ...
New efficient exponentially weighted moving average variability charts based on auxiliary information
(
John Wiley and Sons Ltd
, 2020 , Article)
Control chart is a well-known tool for monitoring the performance of an ongoing process. The variability of a process is an important parameter that may deteriorate the process performance if it is not taken care on time. ...