تصفح Mathematics, Statistics & Physics حسب المؤلف "Osei-Aning, Richard"
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Efficient bivariate EWMA charts for monitoring process dispersion
Osei-Aning, Richard; Abbasi, Saddam Akber ( 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 ... -
Mixed EWMA-CUSUM and mixed CUSUM-EWMA modified control charts for monitoring first order autoregressive processes
Osei-Aning, Richard; Abbasi, Saddam Akber; Riaz, Muhammad ( 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 ...