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79.393  Articles
1 of 7.940 pages  |  10  records  |  more records»
Control charts for monitoring the coefficient of variation (CV) are attracting increasing attention in recent years. These charts are able to monitor processes with an unstable mean and/or standard deviation, but has a stable CV. Existing CV charts are de... see more

A variable sample size (VSS) synthetic chart to monitor the coefficient of variation  is proposed in this paper to improve the performance of the existing synthetic  chart. A description of how the chart operates, as well as the formulae for var... see more

A variable sample size (VSS) synthetic chart to monitor the coefficient of variation  is proposed in this paper to improve the performance of the existing synthetic  chart. A description of how the chart operates, as well as the formulae for var... see more

Since the run length distribution is generally highly skewed, a significant concern about focusing too much on the average run length (ARL) criterion is that we may miss some crucial information about a control chart’s performance. Thus it is important to... see more

Since the run length distribution is generally highly skewed, a significant concern about focusing too much on the average run length (ARL) criterion is that we may miss some crucial information about a control chart’s performance. Thus it is important to... see more

The double sampling (DS) X bar chart, one of the most widely-used charting methods, is superior for detecting small and moderate shifts in the process mean. In a right skewed run length distribution, the median run length (MRL) provides a more credible re... see more

The double sampling (DS) X bar chart, one of the most widely-used charting methods, is superior for detecting small and moderate shifts in the process mean. In a right skewed run length distribution, the median run length (MRL) provides a more credible re... see more

The variable sampling interval run sum (VSI RS) S chart that adopts two different sampling interval lengths on the run sum (RS) S chart is proposed. The Markov chain method is used to compute the optimal parameters that minimize the out-of-control zero st... see more

In this paper, two new control charts have been proposed, one is shewhart-type and other one is EWMA-type control chart. The proposed control charts are based on the exponential type estimator for mean proposed by Noor-ul-Amin and Hanif (2012). We name th... see more

1 of 7.940 pages  |  10  records  |  more records»