Results 101 to 110 of about 3,947 (212)

edcc : An R Package for the Economic Design of the Control Chart

Journal of Statistical Software, 2013
The basic purpose of the economic design of the control charts is to find the optimum control charts parameters to minimize the process cost. In this paper, an R package, edcc (economic design of control charts), which provides a numerical method to find
Weicheng Zhu, Changsoon Park
doaj  

An Enhanced EWMA Model for Statistical Insights in Process Monitoring with Application in Brake Pad Failure and Carbon Fiber Strength

Journal of Statistical Theory and Applications (JSTA)
Conventional control charts often assume normality, which may not hold for many engineering processes. In cases where processes follow an Inverse Maxwell $$\left( {{\text{IM}}} \right)$$ IM distribution, as seen in various industrial applications, it ...
Muhammad Waqas, Song Hua Xu, Syed Masroor Anwar, Zahid Rasheed, Gilbert Masengo   +4 more
doaj   +1 more source

Individuals charts and additional tests for changes in spread [PDF]

Some authors recommend the use of an additional test for detecting increases in the spread, when using a control chart for individual observations. We examine this recommendation both in a practical situation and theoretically. Both studies show that the
Trip, Albert, Wieringa, Jaap E.
core   +1 more source

EWMA CHART BASED ON THE EFFECTIVE VARIANCE FOR MONITORING THE VARIABILITY OF MULTIVARIATE QUALITY CONTROL PROCESS CARTA EWMA CON VARIANZA EFECTIVA PARA MONITOREAR VARIABILIDAD EN PROCESOS DE CONTROL DE CALIDAD MULTIVARIADOS

Revista Colombiana de Estadística, 2008
When it is of interest monitoring small changes in the variability (and/or the mean) of a process, the EWMA control charts have shown to be very efficient.
Morales Víctor Hugo, Vargas José Alberto   +1 more
doaj  

Carta EWMA con varianza efectiva para monitorear variabilidad en procesos de control de calidad multivariados EWMA Chart Based on the Effective Variance for Monitoring the Variability of Multivariate Quality Control Process

Revista Colombiana de Estadística, 2008
Cuando se tiene interés en monitorear pequeños cambios en la variabilidad (o en la media) de un proceso, las cartas tipo EWMA han mostrado ser muy eficientes.
VÍCTOR HUGO MORALES, JOSÉ ALBERTO VARGAS   +1 more
doaj  

EATME: An R package for EWMA control charts with adjustments of measurement error. [PDF]

PLoS One
Chen LP, Lin CK.
europepmc   +1 more source

Stein EWMA Control Charts for Count Processes

The monitoring of serially independent or autocorrelated count processes is considered, having a Poisson or (negative) binomial marginal distribution under in-control conditions. Utilizing the corresponding Stein identities, exponentially weighted moving-average (EWMA) control charts are constructed, which can be flexibly adapted to uncover zero ...
openaire   +2 more sources

Considering AEWMA control chart applied to Gamma-distributed data with fixed and variable sampling intervals. [PDF]

Sci Rep
Lu SL, Chen MC, Chen JH, Yang SF, Chatterjee K.   +4 more
europepmc   +1 more source

A machine learning assisted truncated adaptive EWMA chart for robust process monitoring. [PDF]

Sci Rep
Zaagan AA, Aljohani HM, Zogan H, Nabi M.
europepmc   +1 more source

Enhanced DEWMA-type control chart for process mean monitoring utilizing auxiliary information. [PDF]

Sci Rep
Masood S, Ibrar K, Movaheedi Z, Jabeen H.   +3 more
europepmc   +1 more source