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Now showing items 41-50 of 125
New efficient exponentially weighted moving average variability charts based on auxiliary information
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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. ...
Bayesian EWMA control charts based on Exponential and transformed Exponential distributions
(
John Wiley and Sons Ltd
, 2021 , Article)
In this paper, we proposed the Bayesian exponentially weighted moving average (EWMA) control charts for mean under the nonnormal life time distributions. We used the time between events data which follow the Exponential ...
Improved simple linear profiling method with application to chemical gas sensors
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John Wiley and Sons Ltd
, 2021 , Article)
In industrial applications, a functional relationship between the quality characteristics of interest is well represented by profile functions. These are often characterized by linear or nonlinear relationships that depend ...
Efficient bivariate EWMA charts for monitoring process dispersion
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John Wiley and Sons Ltd
, 2020 , Article)
To ensure high quality standards of a process, the application of control charts to monitor process performance has become a regular routine. Multivariate charts are a preferred choice in the presence of more than one ...
Auxiliary-information-based efficient variability control charts for Phase I of SPC
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John Wiley and Sons Ltd
, 2020 , Article)
The inclusion of correlated auxiliary variables into the monitoring scheme of quality characteristic of interest has gained notable attention in recent statistical process control (SPC) literature. Several authors have ...
Efficient linear profile schemes for monitoring bivariate correlated processes with applications in the pharmaceutical industry
(
Elsevier
, 2020 , Article)
The complexity of chemical processes warrants that collection of information about the processes will continue as they proceed through the various stages of industrialization. Process monitoring has emerged as an essential ...
The use of fast initial response features on the homogeneously weighted moving average chart with estimated parameters under the effect of measurement errors
(
John Wiley and Sons Ltd
, 2021 , Article)
Fast initial response (FIR) features are generally used to improve the sensitivity of memory-type control charts by shrinking time-varying control limits in the earlier stage of the monitoring regime. This paper incorporates ...
A non-parametric double homogeneously weighted moving average control chart under sign statistic
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John Wiley and Sons Ltd
, 2021 , Article)
In practical situations, the underlying process distribution sometimes deviates from normality and their distribution is partially or completely unknown. In that instance, rather than staying with/depending on the conventional ...
Enhanced adaptive multivariate EWMA and CUSUM charts for process mean
(
Taylor and Francis Ltd.
, 2021 , Article)
The multivariate charts are mostly used to simultaneously monitor several quality characteristics in manufacturing processes. In this study, we enhance the sensitivities of the recently proposed adaptive multivariate EWMA ...
Efficient monitoring of coefficient of variation with an application to chemical reactor process
(
John Wiley and Sons Ltd
, 2021 , Article)
Control chart is a useful tool to monitor the performance of the industrial or production processes. Control charts are mostly adopted to detect unfavorable variations in process location (mean) and dispersion (standard ...