Results 101 to 110 of about 6,021 (172)
Power functions of the Shewhart control chart
Journal of Physics: Conference Series, 2013 The Shewhart control chart is used to check for a lack of control (a shift in the process). However it is insensitive to small shifts. To increase the sensitivity of the Shewhart control chart, some actions can be taken. These include reducing the width of the control limits, increasing the subgroup size to reduce the variance of the sample mean and ...
openaire +1 more source
Monitoring Processes with Changing Variances [PDF]
Statistical process control (SPC) has evolved beyond its classical applications in manufacturing to monitoring economic and social phenomena. This extension requires consideration of autocorrelated and possibly non-stationary time series.
J. Keith Ord
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GEPROS: Gestão da Produção, Operações e Sistemas, 2014 The quality of products and processes has proven to be crucial for companies to compete in the market. Statistical process control enables them to foresee problems in the process, thereby ensuring the quality of manufactured items.
Elisa Henning +4 more
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EWMA Chart and Measurement Error [PDF]
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 ...
Maravelakis, Petros +2 more
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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
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Comparison of automatic monitoring systems in automatic forecasting [PDF]
Forecasting Techniques;mathematische ...
Hendrikx, A.L.P.M. +2 more
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Elimination of gender-related employment disparities through statistical process control [PDF]
This paper proposes a novel approach that has the potential to hasten the eradication of gender disparities in employment. This approach relies upon the concept of statistical process control (SPC) to more systematically remedy disparate employment ...
Julie L. Hotchkiss, Mary E. Graham
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Carta de control CEV 
para distribuciones Weibull con datos censurados CEVControl Chart for Weibull Distributions with Censored Data
Revista Colombiana de Estadística, 2005 En algunas aplicaciones en el área de la industria no se puede contar con la información completa y se debe trabajar con observaciones censura das, haciendo inadecuada la aplicación directa de las cartas de control de Shewhart y np.
JOSÉ VARGAS N, TYSUA MONTAÑO P
doaj
Application and Use of Multivariate Control Charts In a BTA Deep Hole Drilling Process [PDF]
Deep hole drilling methods are used for producing holes with a high length-to-diameter ratio, good surface finish and straightness. The process is subject to dynamic disturbances usually classified as either chatter vibration or spiralling. In this paper,
Hering, Franz +3 more
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p-Charts in the Quality Control of the Grading Process in the High Education [PDF]
European countries are making efforts to change their educational system. These changes include implementation of the ECTS (European Credit Transfer and Accumulation System) and are based on the Bologna Declaration.
Mirko Savić
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