Results 51 to 60 of about 892 (180)

Novel combined Shewhart-CUmulative EWMA-SUM mean charts without- and with measurement error

Measurement + Control
The precision of process monitoring often encounters challenges in determining the exact shift size. Therefore, combined control charts have gained considerable attention because of their excellent speed to detect simultaneously small-to-moderate and ...
Tahir Munir, Fahad M. Alqahtani, Afaf Alrashidi, Abdu R Rahman, Salman Arif Cheema, Yi Li   +5 more
doaj   +1 more source

A novel experience in the use of control charts for the detection of nosocomial infection outbreaks

Clinics, 2011
OBJECTIVE: This study aims to compare different control charts to monitor the nosocomial infection rate per 1,000 patient-days. METHODS: The control charts considered in this study were the traditional Shewhart chart and a variation of this, the ...
Isabel Cristina Gomes, Sueli Aparecida Mingoti, Cláudia Di Lorenzo Oliveira   +2 more
doaj   +1 more source

An attribute control chart for a Weibull distribution under accelerated hybrid censoring. [PDF]

PLoS ONE, 2017
In this article, an attribute control chart has been proposed using the accelerated hybrid censoring logic for the monitoring of defective items whose life follows a Weibull distribution.
Muhammad Aslam, Osama H Arif, Chi-Hyuck Jun   +2 more
doaj   +1 more source

Enhancing Food Safety in the Cold Chain Through Internet of Things and Artificial Intelligence

Journal of Food Science, Volume 91, Issue 2, February 2026.
ABSTRACT Effective cold chain management is crucial for ensuring food safety, but traditional monitoring approaches remain reactive and fragmented. Industry 4.0 technologies, such as the Internet of Things (IoT) and artificial intelligence (AI), offer transformative potential for real‐time tracking, automation, and predictive analytics.
Wagner Augusto Müller, Sandro Binsfeld Ferreira, Suse Botelho da Silva   +2 more
wiley   +1 more source

Evaluating the Effectiveness of Control Charting Schemes in Detecting Malicious Attacks Targeting Manufacturing Systems

Quality and Reliability Engineering International, Volume 41, Issue 7, Page 2952-2973, November 2025.
ABSTRACT The increasing risk and impact of cyber‐physical attacks on the manufacturing industry are driven by vulnerabilities in industrial control systems and digital manufacturing technologies. These attacks can be strategically engineered to modify product dimensions while evading detection by current quality control (QC) tools.
Ahmad Al Majali, Lee J. Wells, Ahmad E. Elhabashy   +2 more
wiley   +1 more source

Introduction of a general class of entropy-based control charts: The Φ-chart

Managerial Economics
We introduce a new class of Shewhart control charts, namely the f-chart. This new class is based on the cumulative paired f-divergence that generalizes both the cumulative (residual) entropy and the differential entropy.
Benedikt Mangold, Jens Konopik
doaj   +1 more source

A Robust L‐Comoments Covariance Matrix‐Based Hotelling's T2${T^{2}}$ Control Chart for Monitoring High‐Dimensional Non‐Normal Multivariate Data in the Presence of Outliers

Quality and Reliability Engineering International, Volume 41, Issue 7, Page 3308-3317, November 2025.
ABSTRACT This article introduces a new robust multivariate Hotelling T‐square (TS) control chart that incorporates an L‐Comoments covariance matrix into a multivariate statistical process control (MSPC) charting scheme to enhance its robustness and detection ability.
Muhammad Arslan, Usman Shahzad, Ali Yeganeh, Huiming Zhu, JC Malela‐Majika, Shakeel Ahmad   +5 more
wiley   +1 more source

The Effect of Autocorrelation on the Shewhart-RZ Control Chart

, 2021
In many industrial manufacturing processes, the quality of products depends on the relation between two main ingredients or characteristics. Often, this calls for monitoring the ratio of two normal random variables with statistical process control (SPC) techniques. A large number of studies related to designing control charts monitoring this ratio have
Nguyen, H. D., Nadi, A. Ahmadi, Tran, K. P., Castagliola, P., Celano, G., Tran, K. D.   +5 more
openaire   +2 more sources

Prediction Intervals for Overdispersed Binomial Endpoints and Their Application to Toxicological Historical Control Data

Pharmaceutical Statistics, Volume 24, Issue 5, September/October 2025.
ABSTRACT For toxicology studies, the validation of the concurrent control group by historical control data (HCD) has become requirements. This validation is usually done by historical control limits (HCL), which should cover the observations of the concurrent control with a predefined level of confidence.
Max Menssen, Jonathan Rathjens
wiley   +1 more source

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