Browsing Mathematics, Statistics & Physics by Author "n 2014216485"
Now showing items 1-12 of 12
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A new hwma dispersion control chart with an application to wind farm data
Riaz, Muhammad; Abbasi, Saddam Akber; Hamzat, Abdulhammed K.; Abid, Muhammad ( MDPI AG , 2020 , Article)Recently, a homogeneously weighted moving average (HWMA) chart has been suggested for the efficient detection of small shifts in the process mean. In this study, we have proposed a new one-sided HWMA chart to effectively ... -
An Assorted Design for Joint Monitoring of Process Parameters: An Efficient Approach for Fuel Consumption
Saeed, Usman; Riaz, Muhammad; Abbas, Nasir; Abbasi, Saddam Akber ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Due to high fuel consumption, we face the problem of not only the increased cost, but it also affects greenhouse gas emission. This paper presents an assorted approach for monitoring fuel consumption in trucks with the ... -
An enhanced nonparametric EWMA sign control chart using sequential mechanism
Riaz, Muhammad; Abid, Muhammad; Nazir, Hafiz Zafar; Abbasi, Saddam Akber ( 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 ... -
Bayesian Monitoring of Linear Profiles Using DEWMA Control Structures with Random X
Abbasi, Saddam Akber; Abbas, Tahir; Riaz, Muhammad; Gomaa, Abdel Salam ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)The process structures of manufacturing industry are efficiently modeled using linear profiles. Classical and Bayesian set-ups are two well-appreciated schemes for designing control charts for the monitoring of process ... -
Linear profile monitoring using EWMA structure under ranked set schemes
Riaz, Muhammad; Mahmood, Tahir; Abbasi, Saddam Akber; Abbas, Nasir; Ahmad, Shabbir ( 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
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 ... -
On designing a sequential based EWMA structure for efficient process monitoring
Abbasi, Saddam Akber; Khaliq, Qurat Ul Ain; Omar, M. Hafidz; Riaz, Muhammad ( Taylor and Francis Ltd. , 2020 , Article)Control chart is a popular technique that is widely used in statistical process control to identify any possible deviations from a stable state of a process. Shewhart charts are famous for identifying larger shifts, while ... -
On designing efficient memory-type charts using multiple auxiliary-information
Abbas, Zameer; Nazir, Hafiz Zafar; Abbasi, Saddam Akber; Riaz, Muhammad; Xiang, Dongdong ( Taylor and Francis Ltd. , 2023 , Article)This article intends to investigate new progressive mean (MEP) charts using a single auxiliary characteristic (AMEP) and two auxiliary characteristics (TAMEP) to trace small shifts in the process mean effectively. The ... -
On improved dispersion control charts under ranked set schemes for normal and non-normal processes
Abbas, Tahir; Zaman, Bisma; Atir, Ateeba; Riaz, Muhammad; Akbar Abbasi, Saddam ( John Wiley and Sons Ltd , 2019 , Article)In manufacturing industries, control charts are the promising statistical tools used for an efficient monitoring of processes. These charts enhance the product quality by timely signaling for special variations at any stage ... -
On Model Selection for Autocorrelated Processes in Statistical Process Control
Dawod, Abdaljbbar B. A.; Riaz, Muhammad; Abbasi, Saddam Akber ( 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 ... -
On Phase-I monitoring of process location parameter with auxiliary information-based median control charts
Hussain, Shahid; Mei, Sun; Riaz, Muhammad; Abbasi, Saddam Akber ( MDPI AG , 2020 , Article)A control chart is often used to monitor the industrial or services processes to improve the quality of the products. Mostly, the monitoring of location parameters, both in Phase I and Phase II, is done using a mean control ... -
Phase II monitoring of linear profiles with random explanatory variable under Bayesian framework
Abbas, Tahir; Abbasi, Saddam Akber; Riaz, Muhammad; Qian, Zhengming ( 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 ...