Control chart
Bivariate copulas on the exponentially weighted moving average control chart
... (MEWMA) control charts for four types of copulas and the level of dependence is measured by Kendall’s tau ...MEWMA control chart with Kendall’s tau value equal to ...
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TECHNICAL PAPER ANAEROBIC DIGESTION STABILITY TEST BY SHEWHART CONTROL CHART
... By the distribution analysis of quartile 1 and quartile 3 compared to the average, we may infer a normal distribution for both organic material removal efficiency and biogas production. However, according to MONTGOMERY ...
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Double sampling X̄ control chart for a first order autoregressive process
... standard control charting schemes for Statistical Process Control are based on the assumption that measurements of the product quality variable are independent within and between the ...of control ...
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TRIANGULAR FUZZY MULTINOMIAL CONTROL CHART WITH VARIABLE SAMPLE SIZE USING α – CUTS
... members are more skewed for each variable sample sizes. The weights of the membership degree are also assumed as 1, 0.75, 0.5, 0.25 and 0 in the Fuzzy Multinomial distribution control chart. To overcome ...
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A Modified Statistical Design Model of Double Sampling Mean x Control Chart
... X control chart with I&S model and our modified ...X control chart will vary with different shift ...X control chart will be generated randomly and expected sample sizes with ...
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A DEA Based MODM Model for Designing X Control Chart
... In the mentioned articles, a single assignable cause cost function was used. However in 1971, Duncan [6] developed his previous model and presented a new model in the presence of multiple assignable causes. Since then, ...
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MEASUREMENT ERROR EFFECT ON THE POWER OF CONTROL CHART FOR ZERO-TRUNCATED POISSON DISTRIBUTION
... S control charts. Chang and Gan (2006) developed Shewhart chart for monitoring the linearity between two measure ment ...the control charts for monitoring mu ltivariate process ...CUSUM chart ...
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A self-oriented control chart for multivariate process location
... linear control chart for mean vectors that can additionally provide optimum performance in terms of the average run length for a wide range of changes in the ...
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Estimating Multiple Step Shifts in a Gaussian Process Mean with an Application to Phase I Control Chart Analysis
... change-point problem devoted to ongoing (phase II) settings where the emphasis is on process monitoring with a clean set data obtained from retrospective analysis. In this application, the process is first assumed to be ...
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A control chart method for evaluating hemagglutination reagent used in Chagas' disease diagnosis
... Following this procedure, both the reference reagent and the reagent to be assessed are tested against the serum panel; differences in the titers obtained by the t[r] ...
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A Combined Control Chart for Identifying Out–Of–Control Points in Multivariate Processes
... lling con una grá fi ca MEWMA o MCUSUM pa ra de tec - tar cual quier mag ni tud de cam bio en el vec tor de me - dias del pro ce so, lo an te rior tam bién in cre men ta la ta sa de se ña les fue ra de con trol. Sin em ...
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Prod. vol.26 número4
... CUSUM/EWMA chart, we observe; Pan & Chen (2005) have obtained economic design of CUSUM chart for monitoring environmental performance, Serel & Moskowitz (2008) have obtained an economic design of ...
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... the control chart performance in phase II and it indicates the mean number of samples required to detect a change in the process ...a control chart type is considered better than the others ...
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MECHANIZED AND INDIVIDUALIZED APPLICATION OF N-P-K IN COMBINED OPERATIONS IN SUGARCANE
... the control chart, analyzing the MAP distribution both the individual values (Figure 3a) and the Moving Range (Figure 3b), in the treatment with two operations, showed less variability with only natural ...
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STATISTICAL PROCESS CONTROL FOR MONITORING EXAMS PRESCRIPTIONS IN MEDICAL COOPERATIVES doi: http://dx.doi.org/10.5892/ruvrd.v12i1.1464
... demand. It is desired that a physician submits an average of less than the minimum expected (LCL) required exams. This result may indicate low quality services, such as doctors that are not asking for the minimum number ...
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Pesqui. Oper. vol.29 número3
... to control the mean vector and/or the covariance matrix of bivariate ...the control chart’s users are, in general, more familiar with means and variances, they will have less difficult to deal with the ...
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J. Braz. Chem. Soc. vol.26 número1
... the control chart based on PCA, a series of preprocessing methods were applied to reduce instrumental noise and light scattering that can affect the interpretation of the signal, such as Savitzky-Golay ...
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Prod. vol.21 número2
... The construction of surveillance methods involves statistical theory, practical issues as to the collection of new types of data, and also computational ones such as the implementation of automated methods in large scale ...
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Prod. vol.21 número2
... variables control charts are not suitable since their performance could not be properly ...EWMA Control Chart based on a simple statistic to monitor the small mean shifts in the process with ...
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Prod. vol.21 número2
... group control charts (GCC) proposed by Boyd (1950) and described in Burr (1976), Pyzdek (1992, Chapter 21) and Montgomery (1997, Section ...of control charts that would arise if every stream were controlled ...
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