Results 31 to 40 of about 937,732 (286)

Monitoring the Weibull Scale Parameter Based on Type I Censored Data Using a Modified EWMA Control Chart

open access: yesAxioms, 2023
In industrial production, the exponentially weighted moving average scheme is widely used to monitor shifts in product quality, especially small-to-moderate shifts.
Dan Yu   +5 more
doaj   +1 more source

Monitoring Industrial Process using a Robust Modified Mean Chart

open access: yesAustrian Journal of Statistics, 2019
Shewhart control chart is the most popular and widely used Statistical process Control tool to monitor process. It is developed under the assumption of independent and normally distributed process. In order to control process mean and standard deviation,
Marangattu R. Sindhumol   +2 more
doaj   +1 more source

Monitoring Betaine Using Interval Time Between Events Control Chart

open access: yesFrontiers in Nutrition, 2022
A generalization of moving average (MA) control chart for the exponential distribution under classical statistics is presented in this article. The designing of the MA control chart for the exponential distribution under neutrosophic statistics is also ...
Muhammad Saleem   +2 more
doaj   +1 more source

Guaranteed conditional performance of the median run length based EWMA chart with unknown process parameters

open access: yesCommunications in statistics. Simulation and computation, 2019
Exponentially weighted moving average (EWMA) type charts are very popular and efficient in monitoring various kind of statistics. Much researches have been done on the EWMA chart with known process parameters.
Xuelong Hu   +3 more
semanticscholar   +1 more source

Informativeness of sleep cycle features in Bayesian assessment of newborn electroencephalographic maturation [PDF]

open access: yes, 2011
Clinical experts assess the newborn brain development by analyzing and interpreting maturity-related features in sleep EEGs. Typically, these features widely vary during the sleep hours, and their informativeness can be different in different sleep ...
Jakaite, Livija   +2 more
core   +2 more sources

A Novel Moving Average–Exponentiated Exponentially Weighted Moving Average (MA-Exp-EWMA) Control Chart for Detecting Small Shifts

open access: yesMathematics
Process monitoring plays a vital role in ensuring quality stability, and, operational efficiency across fields such as manufacturing, finance, biomedical science, and environmental monitoring.
Jun-Hao Lu, Chang-Yun Lin
doaj   +1 more source

Hybrid EWMA Control Chart under Bayesian Approach Using Ranked Set Sampling Schemes with Applications to Hard-Bake Process

open access: yesApplied Sciences, 2023
A memory-type control chart is an important tool of statistical process control for monitoring small to moderate shifts in the manufacturing process. Using the prior information by the Bayesian approach is helpful in control charts.
Imad Khan   +5 more
doaj   +1 more source

Optimal estimated process parameters side sensitive group runs chart based on expected average run length

open access: yesHeliyon, 2018
The side sensitive group runs (SSGR) chart is better than both the Shewhart and synthetic charts in detecting small and moderate process mean shifts. In practical circumstances, the process parameters are seldom known, so it is necessary to estimate them
H. You
semanticscholar   +1 more source

Long run analysis of crude oil portfolios [PDF]

open access: yes, 2018
This paper deals with the analysis of the long-run behavior of a set of mispricing portfolios generated by three crude oils, where one of the oils is the reference commodity and it is compared to a combination of the other two ones. To this aim, the long-
Cerqueti, Roy   +2 more
core   +2 more sources

Empirical Bayes Prediction for an Attribute Control Chart in Quality Monitoring

open access: yesIEEE Access
A control chart is a valuable statistical tool used in production process control to ensure that products meet quality standards. The c-chart, a specific type of control chart, monitors the number of nonconformities or defects in a production process ...
Yadpirun Supharakonsakun
doaj   +1 more source

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