Results 91 to 100 of about 6,512 (216)

Quality monitoring in thyroid surgery using the Shewhart control chart

British Journal of Surgery, 2009
Abstract Background A control chart can help to interpret and reduce sources of variability in patient safety by continuously monitoring indicators. The aim of this study was to monitor the outcome of thyroid surgery using control charts. Methods
A, Duclos, S, Touzet, P, Soardo, C, Colin, J L, Peix, J C, Lifante   +5 more
openaire   +2 more sources

Multivariate Statistical Process Control Charts and the Problem of Interpretation: A Short Overview and Some Applications in Industry [PDF]

Woodall and Montgomery in a discussion paper, state that multivariate process control is one of the most rapidly developing sections of statistical process control.
Bersimis, Sotiris, Panaretos, John, Psarakis, Stelios   +2 more
core   +1 more source

Are estimated control charts in control? [PDF]

, 2001
Standard control chart practice assumes normality and uses estimated parameters. Because of the extreme quantiles involved, large relative errors result. Here simple corrections are derived to bring such estimated charts under control.
Albers, W., Kallenberg, W.C.M.
core   +1 more source

Sequential control chart methodology [PDF]

A modification of the V mask sequential control chart is proposed. In this modified scheme, a parabolic section is included in the mask to provide better performance when the process undergoes a large change in the mean from goal conditions.

core   +1 more source

CEV MEAN CONTROL CHART FOR WEIBULL DISTRIBUTIONS WITH CENSORED DATA CARTA DE CONTROL CEV PROMEDIO PARA DISTRIBUCIONES WEIBULL CON DATOS CENSURADOS

Revista Colombiana de Estadística, 2005
In many Industrial applications, censored observations are present and in this cases direct application of the Shewhart mean and np control charts is not adequate.
Vargas N. José, Montaño P. Tysua
doaj  

Pearson and Deviance Residual-Based Control Charts for the Inverse Gaussian Ridge Regression Process: Simulation and an Application to Air Quality Monitoring

Axioms
In manufacturing and service industries, monitoring processes with correlated input variables and inverse Gaussian (IG)-distributed quality characteristics is challenging due to the limitations of maximum likelihood estimator (MLE)-based control charts ...
Muhammad Amin, Samra Rani, Sadiah M. A. Aljeddani   +2 more
doaj   +1 more source

SYSTEM DESIGN AND BEHAVIOR OF PATTERN RECOGNITION OF CONTROL CHART USING NEURAL NETWORK

Jurnal Teknik Industri, 2003
Recognition of unnatural patterns in control charts is important to get more understanding about the process problem. Shewhart control chart can recognize shift pattern only, while the others cannot be detected by this chart.
Justin Yulius Halim
doaj  

How to Make Chance Manageable : Statistical Thinking and Cognitive Devices in Manufacturing Control [PDF]

The industrial enterprise is an excellent place to view a great diversity of forms of control: control of finances and accounts, controls on the material operations of fabrication, of logistics, and control of people at every level.
Denis Bayart
core  

Exceedance probabilities for parametric control charts [PDF]

, 2002
Common control charts assume normality and known parameters. Quite often these assumptions are not valid and large relative errors result in the usual performance characteristics, such as the false alarm rate or the average run length.
Albers, W., Kallenberg, W.C.M., Nurdiati, S.   +2 more
core   +1 more source

Monitoring of the BTA Deep Hole Drilling Process Using Residual Control Charts [PDF]

Deep hole drilling methods are used for producing holes with a high lengthto- diameter ratio, good surface finish and straightness. The process is subject to dynamic disturbances usually classified as either chatter vibration or spiralling. In this work,
Hering, Franz, Messaoud, Amor, Theis, Winfried, Weihs, Claus   +3 more
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