[EN] Purpose The study aims to design a control chart based on an exponentially weighted moving average (EWMA) chart of Pearson's residuals of a model of negative binomial regression in order to detect possible anomalies ...
Madrid-Alvarez, Harold; García-Díaz, J. Carlos; Víctor G. Tercero-Gómez(John Wiley & Sons, 2023)
[EN] Even though most control chart developments have revolved around the normal distribution, productive operations, in fact, often use non-normal data, and some even use skewed distributions. This occurs with cycle times ...
[EN] Control charts for variables are a reference tool for the statistical monitoring of a quantitative variable. However, there are processes in which the exact measurement of the variable is highly complex or costly. In ...
Carot Sánchez, María Teresa; Sagbas, Aysun; Sanz Juan, José María(University of Kragujevac, Center of Quality, 2013)
[EN] Process capability analysis is a very effective way for improving process quality by relating process variation to customer requirements. It compares the output of a process to the specification limits by using process ...
Argoti-Morales, Marco Antonio; Carrión García, Andrés(University of Kragujevac, Center of Quality, 2018)
[EN] The Shewhart p-Chart is a widely used and taught control chart that monitors the process fraction of nonconforming, p. The control limits of this chart are computed from an equation derived from the central limit ...
Water quality evaluation provides important information to estimate water system status and to test for compliance with standards. The present work analyzes changes concerning the quality of surface water using a data set ...
Garcia-Bustos, Sandra; Mera-Intriago, Eva; Debón Aucejo, Ana María; Bustamante, Iris; Alvarez, Illych(Papeles de Poblacon, 2020-06)
[ES] En este trabajo se han diseñado gráficos de control con el objetivo de detectar anomalías en los datos de mortalidad infantil del área urbana en Ecuador. A fin de diseñar estos gráficos, se construyeron modelos de ...
Mateos Alonso, Marcos(Universitat Politècnica de València, 2023-07-20)
[ES] Una empresa dedicada a producir cantos de PVC para muebles de melamina carece actualmente de procesos normalizados de calidad del producto, lo que provoca variaciones significativas entre producciones y retos en la ...
Segura Ramos, Daniel(Universitat Politècnica de València, 2024-11-10)
[ES] En este trabajo se propone el estudio, desarrollo y análisis de un gráfico de control, de tipo CUSUM no paramétrico, dedicado a la monitorización simultánea del tiempo entre eventos y su amplitud (TBEA, por sus siglas ...
Prats García, Pablo(Universitat Politècnica de València, 2018-11-19)
[ES] El presente Trabajo de Fin de Grado surge a partir de la observación en la empresa
de la posibilidad
de realizar un proyecto relacionado con
el
área de actividad usando la metodología Seis
-
Sigma.
En este ...
Kahn Epprecht, Eugenio; Aparisi García, Francisco José; García Bustos, Sandra Lorena(Elsevier, 2013-12)
In this paper we analyze the monitoring of p Poisson quality characteristics simultaneously, developing a new multivariate control chart based on the linear combination of the Poisson variables, the LCP control chart. The ...