Results 1 to 10 of about 1,751 (185)

Revisiting the one-sided EWMA control chart [PDF]

open access: yesJournal of Applied Research on Industrial Engineering, 2022
Exponential Weighted Moving Average (EWMA) control charts have been widely used in Statistical Process Control (SPC) to detect small and persistent process shifts.
Duy Duong-Tran   +2 more
doaj   +1 more source

Explicit analytical solutions for the average run length of modified EWMA control chart for ARX(p,r) processes [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
Statistical process control (SPC) plays a necessary role in manufacturing industry processes. An essential tool for SPC used for monitoring, measuring, controlling, and improving quality in various fields is the control chart.
Korakoch Silpakob   +3 more
doaj   +1 more source

Statistical Design for Monitoring Process Mean of a Modified EWMA Control Chart based on Autocorrelated Data

open access: yesWalailak Journal of Science and Technology, 2021
From the principles of statistical process control, the observations are assumed to be identically and independently normally distributed, although this assumption is frequently untrue in practice.
Yadpirun SUPHARAKONSAKUN
doaj   +3 more sources

A logical operating model for the assessment of the forced sale value in the judicial procedures [Un modello logico -operativo per la stima del forced sale value nelle procedure giudiziarie]

open access: yesValori e Valutazioni, 2022
With reference to real estate auctions activated in the context of judicial procedures (bankruptcy and/or executive), this work develops and tests a logical operating model for the assessment of the forced sale value.
Pierluigi Morano   +2 more
doaj   +1 more source

A Comparative Study of the EWMA and Double EWMA Control Schemes

open access: yesJournal of Physics: Conference Series, 2021
Abstract A control scheme is the most excellent and irreplaceable tool in Statistical Process Control because of its effectiveness in controlling and monitoring the process, which indirectly helps ensure that the quality of a product is controlled.
K M Chan   +4 more
openaire   +1 more source

A variable sampling interval EWMA t chart with auxiliary information – A robustness study in the presence of estimation error

open access: yesAlexandria Engineering Journal, 2022
This article proposes the variable sampling interval (VSI) exponentially weighted moving average (EWMA) t chart for the process mean using auxiliary information (AI) (denoted as the VSI EWMA t-AI chart).
Peh Sang Ng   +3 more
doaj   +1 more source

Modification of ARL for detecting changes on the double EWMA chart in time series data with the autoregressive model

open access: yesConnection Science, 2023
This research aims to derive the average run length (ARL) evaluation of the double exponentially weighted moving average (double EWMA) control chart for observation data that follows exponential white noise in a time series model with an autoregressive ...
Kotchaporn Karoon   +2 more
doaj   +1 more source

Variations of High-Intensity GPS Derived Measures between Playing Status during a Full Soccer Season in a Professional Male Team

open access: yesJournal of Men's Health, 2022
Background: This study’s aim was twofold: (i) to compare starters and non-starters on a professional soccer team in terms of variations in training intensity indexes across a season, calculated through total distance, sprint distance, accelerations (Acc),
Hadi Nobari   +4 more
doaj   +1 more source

Enhancing the performance of EWMA charts [PDF]

open access: yesQuality and Reliability Engineering International, 2010
Control charts are extensively used in processes and are very helpful in determining the special cause variations so that a timely action may be taken to eliminate them. One of the charting procedures is the Shewhart‐type control charts, which are used mainly to detect large shifts.
Nasir Abbas   +2 more
openaire   +3 more sources

Redes neuronales aplicadas al control estadístico de procesos con cartas de control EWMA

open access: yesTecnura, 2023
Contexto: Existe una creciente necesidad de monitorear y predecir variables críticas en procesos productivos; por tanto, a partir del enfoque de control estadístico, se ha asumido desde el uso de cartas de control para mediciones individuales.
Ruth Milena Suárez Castro   +1 more
doaj   +1 more source

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