Results 1 to 10 of about 78,935 (200)

Application of Shewhart Control Chart in Controlling Adverse Events in Patients with Severe Acute Organophosphorus Pesticide Poisoning Undergoing Blood Purification [PDF]

open access: yesEmergency Medicine International, 2022
Objective. To explore the application effect of the Shewhart control chart in controlling adverse events in patients with severe acute organophosphorus pesticide poisoning (AOPP) undergoing blood purification. Methods.
Zhen Zhang, Xufeng Mei, Qin Zhang
doaj   +2 more sources

Assessing the effectiveness of the ZICOMP-Shewhart control chart for monitoring zero-inflated processes [PDF]

open access: yesScientific Reports
The zero-inflated Conway-Maxwell Poisson (ZICOMP) distribution models count data with many zero observations. This distribution assumes that zero observations occur with probability $$\:p$$ , and the count of nonconformities in a product unit follows the
Aqsa Sattar   +5 more
doaj   +2 more sources

ANAEROBIC DIGESTION STABILITY TEST BY SHEWHART CONTROL CHART [PDF]

open access: yesEngenharia Agrícola, 2017
The anaerobic digestion (AD) operation complexity raise the importance of stability testing to verify whether the operating conditions are under control and whether the process is working as required.
Michael S. Alcantara   +3 more
doaj   +2 more sources

On Designing of Bayesian Shewhart-Type Control Charts for Maxwell Distributed Processes with Application of Boring Machine

open access: yesMathematics, 2023
The quality characteristic(s) are assumed to follow the normal distribution in many control chart constructions, although this assumption may not hold in some instances.
Fatimah Alshahrani   +5 more
doaj   +2 more sources

A comparative analysis of mean charts assuming Weibull and generalized exponential distributions [PDF]

open access: yesHeliyon
This study discusses Shewhart control charts to monitor the mean of non-normally distributed data using extensive Monte Carlo simulations. In particular, Weibull, exponential, and generalized exponential distributions are used to conduct a systematic ...
Asad Raza   +4 more
doaj   +2 more sources

New modified exponentially weighted moving average-moving average control chart for process monitoring

open access: yesConnection Science, 2022
The mixed control chart is proposed to improve detection performance with fewer process shifts. In this study, we proposed the modified exponentially weighted moving average - moving average control chart (MMEM), a new mixed control chart for observing ...
Khanittha Talordphop   +2 more
doaj   +2 more sources

Comparing the efficacy of coefficient of variation control charts using generalized multiple dependent state sampling with various run-rule control charts [PDF]

open access: yesScientific Reports
This paper aimed to develop a coefficient of variation (CV) control chart utilizing the generalized multiple dependent state (GMDS) sampling approach for CV monitoring. We conducted a comprehensive examination of this designed control chart in comparison
G. Srinivasa Rao   +3 more
doaj   +2 more sources

CONTROL CHARTS MONITORING FOR QUALITY CONCRETE PAVEMENTS [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2020
In this article, Control charts are employed to analyse the strength quality control of ready-mixed concrete for rigid pavement. The results of the study support that CUSUM statistical analysis is more sensitive than the Shewhart control chart. The CUSUM
Izabela SKZYPCZAK   +3 more
doaj   +1 more source

Robust Multivariate Shewhart Control Chart Based on the Stahel-Donoho Robust Estimator and Mahalanobis Distance for Multivariate Outlier Detection

open access: yesMathematics, 2021
While researchers and practitioners may seamlessly develop methods of detecting outliers in control charts under a univariate setup, detecting and screening outliers in multivariate control charts pose serious challenges.
I. A. Raji   +3 more
semanticscholar   +1 more source

Assessing the use of the moving window approaches when monitoring social networks using a degree corrected stochastic block model [PDF]

open access: yesReview of Economics and Political Science, 2021
Purpose – This study aims to assess the effect of updating the Phase I data – to enhance the parameters' estimates – on the control charts' detection power designed to monitor social networks. Design/methodology/approach – A dynamic version of the degree
Abeer A. Zaki   +2 more
doaj   +1 more source

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