Results 21 to 30 of about 1,881 (223)
Use of qualitative control and discriminatory function in applied studies [PDF]
مجلة التربية والعلم, 2007 ABSETRACT Shewhart control chart is used to control the quality of a process of a variable in a specific stage, if the chart is frequently constructed under different stages, we suggested to construct a pooled control charts, the aim of the pooling is ...
Marwan Dabdoub, Omer Al-Rawi
doaj +1 more source
A Combined Runs Rules Scheme for Monitoring General Inflated Poisson Processes
Mathematics, 2023 In this work, a control chart with multiple runs rules is proposed and studied in the case of monitoring inflated processes. Usually, Shewhart-type control charts for attributes do not have a lower control limit, especially when the in-control process ...
Eftychia Mamzeridou +1 more
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Shewhart-np control chart for simulation data.
, 2017 Shewhart-np control chart for simulation data.
Muhammad Aslam (3442490) +2 more
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On Performance of Two-Parameter Gompertz-Based X¯ Control Charts
Journal of Probability and Statistics, 2020 In this paper, two methods of control chart were proposed to monitor the process based on the two-parameter Gompertz distribution. The proposed methods are the Gompertz Shewhart approach and Gompertz skewness correction method.
Johnson A. Adewara +2 more
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The Shewhart-type RZ control chart for monitoring the ratio of autocorrelated variables
, 2023 International audienceIn many industrial manufacturing processes, the quality of products can depend on the relative amount between two quality characteristics X and Y.
Nguyen, Huu Du +11 more
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PETA KENDALI EWMA RESIDUAL PADA DATA BERAUTOKORELASI
E-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
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Aperfeiçoamento e desenvolvimento dos gráficos combinados Shewhart-Cusum binomiais [PDF]
, 2012 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Produção, Florianópolis, 2010Os tradicionais gráficos de controle Shewhart são considerados efetivos na detecção de grandes mudanças
Henning, Elisa.
core
Phase I Multivariate Coefficient of Variation Control Charts for High‐Dimensional Processes
Quality and Reliability Engineering International, EarlyView.ABSTRACT Multivariate control charts have traditionally focused on monitoring the process mean vector and/or covariance matrix. Recent studies have extended this framework to Phase II monitoring of the multivariate coefficient of variation (MCV); yet very limited work has examined MCV‐based monitoring in Phase I.
O. A. Oyegoke +2 more
wiley +1 more source
Quality and Reliability Engineering International, Volume 42, Issue 4, Page 1691-1706, June 2026.ABSTRACT In modern manufacturing environments, traditional statistical process control (SPC) methods often struggle with complex, dynamic data patterns, particularly when observations are autocorrelated. Control charts are useful tools used in SPC to detect any significant drift in a process.
Jeanette Maria Louw +3 more
wiley +1 more source
A Two Control Limits Double Sampling Control Chart by Optimizing Producer and Customer Risks [PDF]
ITB Journal of Engineering Science, 2010 Standard Shewhart process control chart has been widely used, but it is not sensitive in detecting small shift. A number of alternatives have been proposed to improve the capability of control chart.
Dradjat Irianto & Ani Juliani
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