Browsing by Author "Aslam, Muhammad"
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An improved adaptive EWMA control chart for monitoring time between events with application in health sector
Aslam, Muhammad; Khan, Majid; Rasheed, Zahid; Anwar, Syed Masroor; Abbasi, Saddam Akber ( 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 ... -
Robust Distribution-Free Hybrid Exponentially Weighted Moving Average Schemes Based on Simple Random Sampling and Ranked Set Sampling Techniques
Malela-Majika, Jean Claude; Shongwe, Sandile C.; Aslam, Muhammad; Abbasi, Saddam A. ( Hindawi , 2021 , Article)This paper proposes new nonparametric hybrid exponentially weighted moving average (HEWMA) control charts based on simple random sampling (SRS) and ranked set sampling (RSS) techniques using the Wilcoxon rank-sum W statistic. ... -
The use of fast initial response features on the homogeneously weighted moving average chart with estimated parameters under the effect of measurement errors
Thanwane, Maonatlala; Abbasi, Saddam Akber; Malela-Majika, Jean-Claude; Aslam, Muhammad; Shongwe, Sandile Charles ( 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 ...