Results 21 to 30 of about 608,376 (299)

Design of a New Tukey MA-DEWMA Control Chart to Monitor Process and its Applications

IEEE Access, 2021
Control chart is a useful statistical tool for the production process control to maintain the product value at the standard. The objectives of this research were to propose the Tukey Moving Average - Double Exponentially Weighted Moving Average control ...
Rattikarn Taboran, Saowanit Sukparungsee, Yupaporn Areepong   +2 more
doaj   +1 more source

Kernel principal component analysis (PCA) control chart for monitoring mixed non-linear variable and attribute quality characteristics

Heliyon, 2022
The products are commonly measured by two types of quality characteristics. The variable characteristics measure the numerical scale. Meanwhile, the attribute characteristics measure the categorical data.
Muhammad Ahsan, Muhammad Mashuri, Hidayatul Khusna, Wibawati   +3 more
doaj   +1 more source

A Bayesian Control Chart for Monitoring Process Variance

Applied Sciences, 2021
Automation in the service industry is emerging as a new wave of industrial revolution. Standardization and consistency of service quality is an important part of the automation process.
Chien-Hua Lin, Ming-Che Lu, Su-Fen Yang, Ming-Yung Lee   +3 more
doaj   +1 more source

The performance of the truncated mixed control chart

Communications in Statistics - Theory and Methods, 2018
When the mixed chart proposed by Aslam et al. (2015) is in use, the sample items are classified as defective or not defective and, depending on the number of defectives, the quality characteristic ...
Roberto Campos Leoni, Antonio Fernando Branco Costa   +1 more
openaire   +3 more sources

Monitoring of Linear Profiles Using Linear Mixed Model in the Presence of Measurement Errors

Mathematics, 2022
In the application of control charts, most of the research in profile monitoring is based on accurate measurements. Measurement errors, however, often exist in many manufacturing and service environments.
Wenhui Liu, Zhonghua Li, Zhaojun Wang
doaj   +1 more source

Crude versus case-mix-adjusted control charts for safety monitoring in thyroid surgery [PDF]

BMJ Quality & Safety, 2010
Patient-safety monitoring based on health-outcome indicators can lead to misinterpretation of changes in case mix. This study aimed to compare the detection of indicator variations between crude and case-mix-adjusted control charts using data from thyroid surgeries.The study population included each patient who underwent thyroid surgery in a teaching ...
Antoine, Duclos, Nicolas, Voirin, Sandrine, Touzet, Pietro, Soardo, Anne-Marie, Schott, Cyrille, Colin, Jean-Louis, Peix, Jean-Christophe, Lifante   +7 more
openaire   +2 more sources

Hazard Analysis of Critical Control Points Assessment as a Tool to Respond to Emerging Infectious Disease Outbreaks [PDF]

, 2013
Highly pathogenic avian influenza virus (HPAI) strain H5N1 has had direct and indirect economic impacts arising from direct mortality and control programmes in over 50 countries reporting poultry outbreaks.
A Thorson, AW Mounts, BB Chomel, CB Bridges, D Areechokchai, D Eagles, Diana J. Bell, DJ Bell, G Tian, IN Kandun, JH Beigel, Julian W. Tang, KE Jones, Kelly L. Edmunds, KL Edmunds, KL Edmunds, L Swift, M Grenier, MD de Jong, MD Van Kerkhove, MD Van Kerkhove, NJ Savill, NY Kung, P Daszak, Paul R. Hunter, PN Dinh, Promed, Promed, QY Liao, RA Weiss, RG Webster, Roger Few, S Binder, S Vong, SI Roberton, TL Bogich, WB Karesh   +36 more
core   +2 more sources

TheT²chart with mixed samples to control bivariate autocorrelated processes [PDF]

International Journal of Production Research, 2015
In this paper, we propose the use of the T2 chart with the mixed sampling strategy (MS) to monitor the mean vector of bivariate processes with observations that fit to a first-order vector autoregressive model. With the MS, rational subgroups of size n are taken from the process and the selected units are regrouped to form the mixed samples.
Leoni, Roberto Campos, Machado, Marcela Aparecida Guerreiro, Costa, Antonio Fernando Branco   +2 more
openaire   +3 more sources

Control Chart T2Qv for Statistical Control of Multivariate Processes with Qualitative Variables

Mathematics, 2023
The scientific literature is abundant regarding control charts in multivariate environments for numerical and mixed data; however, there are few publications for qualitative data. Qualitative variables provide valuable information on processes in various
Wilson Rojas-Preciado, Mauricio Rojas-Campuzano, Purificación Galindo-Villardón, Omar Ruiz-Barzola   +3 more
doaj   +1 more source

An EWMA-DiD Control Chart to Capture Small Shifts in the Process Average Using Auxiliary Information

Technologies, 2018
Among the Statistical Process Control (SPC) techniques, control charts are considered to be high weight-age due to their effectiveness in process variation.
Muhammad Anwar Mughal, Muhammad Azam, Muhammad Aslam   +2 more
doaj   +1 more source