Results 11 to 20 of about 4,710 (223)

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   +2 more sources

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   +4 more sources

Comparative Analysis Between EWMA, DEWMA and Mixed Tukey EWMA Control Chart

open access: yesAcademic Science journal, 2023
The control chart is a good tool for monitoring. Single and double exponential weighted moving average control charts are suitable charts to detect small shifts in the process parameters. For good detection, an ability the displaced moving average chart relies depends on the normality assumption.
Kawa M. Jamal Rashid, Sozan S. Haydar
openaire   +4 more sources

A generalized EWMA control chart and its comparison with the optimal EWMA, CUSUM and GLR schemes

open access: yesThe Annals of Statistics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Han, Dong, Tsung, Fu-gee
openaire   +4 more sources

EWMA Chart and Measurement Error [PDF]

open access: yesJournal of Applied Statistics, 2004
Measurement error is a usually met distortion factor in real-world applications that influences the outcome of a process. In this paper, we examine the effect of measurement error on the ability of the EWMA control chart to detect out-of-control situations. The model used is the one involving linear covariates.
Maravelakis, Petros   +2 more
openaire   +4 more sources

PETA KENDALI EWMA RESIDUAL PADA DATA BERAUTOKORELASI

open access: yesE-Jurnal Matematika, 2019
Control charts with  autocorrelation can be overcome by creating control chart with residuals from the best forecasting model. EWMA control chart is a alternative to the Shewhart control chart when detecting small shifts.
NI KADEK YUNI DEWIANTARI   +2 more
doaj   +3 more sources

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

Assistance to the wound care patient: a challenge still open

open access: yesInfermieristica Journal, 2023
Wound care used to be more of an art than a science, but thanks to contributions from different disciplines, wound care is now firmly based on science and clinical evidence using a holistic view of the patient.
Laura Stefanon, Sebastian Probst
doaj   +1 more source

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