Results 31 to 40 of about 5,991 (170)

High‐Dimensional Cumulative Sum Control Charts for Industrial Measurement Systems

Quality and Reliability Engineering International, Volume 42, Issue 7, Page 4342-4361, November 2026.
ABSTRACT High dimensional sensing in modern factories and energy assets produces thousands of correlated signals. Detecting small process shifts is challenging because many classical multivariate charts lose power or become unstable. We present two cumulative sum procedures for two sample monitoring that remain effective when the number of variables is
Osama Alhadi, Tahir Mahmood, Muhammad Riaz, Nasir Abbas   +3 more
wiley   +1 more source

A comparative study of the EWMA and double EWMA control schemes

, 2021
A control scheme is the most excellent and irreplaceable tool in Statistical Process Control because of its effectiveness in controlling and monitoring the process, which indirectly helps ensure that the quality of a product is controlled.
Chong, Z. L., Teoh, W. L.; id_orcid, Chan, K. M., Khoo, M. B. C., Khaw, K. W.   +4 more
core   +1 more source

Monitoring of manufacturing process using bayesian EWMA control chart under ranked based sampling designs

Scientific Reports, 2023
Control charts, including exponentially moving average (EWMA) , are valuable for efficiently detecting small to moderate shifts. This study introduces a Bayesian EWMA control chart that employs ranked set sampling (RSS) with known prior information and ...
Imad Khan, Muhammad Noor-ul-Amin, Dost Muhammad Khan, Emad A. A. Ismail, Wojciech Sumelka   +4 more
doaj   +1 more source

Subspace Acceleration for Efficient Nonlinear Water Wave Simulation

International Journal for Numerical Methods in Fluids, Volume 98, Issue 10, Page 1165-1180, October 2026.
We introduce an exponentially weighted subspace acceleration technique to reduce GMRES iterations for solving the Poisson equation with time‐dependent coefficients in nonlinear, dispersive free‐surface flows governed by the incompressible Navier‐Stokes equations. The method significantly reduces memory requirements and computational complexity compared
Rasmus Kleist Hørlyck Sørensen, Margherita Guido, Allan Peter Engsig‐Karup, Daniel Kressner   +3 more
wiley   +1 more source

Comparative Analysis Between EWMA, DEWMA and Mixed Tukey EWMA Control Chart [PDF]

, 2023
The control chart is a good tool for monitoring. Single and double exponential weighted moving average control charts are suitable charts to detect small shifts in the process parameters.
Kawa M. Jamal Rashid, Sozan S. Haydar
core   +1 more source

Univariate and Multivariate Linear Profiles Using Max-Type Extended Exponentially Weighted Moving Average Schemes

IEEE Access, 2022
Many studies have shown that industrial as well as non-industrial business organisations present a growing need of robust and more efficient multivariate monitoring schemes in order to be able to monitor several quality characteristics simultaneous.
Jean-Claude Malela-Majika, Kashinath Chatterjee, Christos Koukouvinos   +2 more
doaj   +1 more source

Hair analysis of formoterol as a novel tool to assess long‐term inhalation medication adherence: Data from the TRICOLON trial

British Journal of Clinical Pharmacology, Volume 92, Issue 9, Page 3235-3245, September 2026.
Aim The aim of this paper is to examine inhaled formoterol concentrations in hair and assess the potential of hair analysis as a tool for measuring long‐term adherence, by validation with objective data from digital inhalers. Methods Hair samples and digital inhaler data were collected from patients with COPD in 10 hospitals in the Netherlands as part ...
Liz J. A. Cuperus, A. Mireille A. Wessels, Huib A. M. Kerstjens, Daan J. Touw, Erik W. M. A. Bischoff, Job van der Palen, Arnoud Aldenkamp, Astrid van Huisstede, Folkert Brijker, Stephan Dik, Lidwien Graat‐Verboom, Martijn Goosens, Peter Th. W. van Hal, Jolanda C. Kuijvenhoven, Lisette I. Z. Kunz, Renske van der Meer, Mariette H. A. Scholma‐Bronsema, Job F. M. van Boven, Johannes C. C. M. in't Veen, the TRICOLON study group, Marjo van der Poel, Irini Piso, Marijke Amelink, Anke Rol, Jennifer de Graaf, Petra Hirmann, Fleur van Tour, Elly Jordens, Lydia Alfing, Gerda Lenderink, Truus Rietveld, Jasmijn van Campen, Jantine de Bruijn, Janice van ter Burg, Liselore Baarssmit, Walter van Litsenburg, Len Knoops, Margot Eggermont‐Schilt, Manon de Waard‐Heijligers, Ilonka Paalvast‐Schouten, Mariette Scholma, Sandra Brookman‐Mozes, Inge Paas, Lidwien Verboom, Karin van Mierlo‐Snoeijs   +44 more
wiley   +1 more source

Exponentially Weighted Moving Average Control Schemes for Assessing Hospital Organizational Performance

Statistica, 2016
Exponentially weighted moving average (EWMA) control charts have been successfully used in recent years in several areas of healthcare. Most of these applications have concentrated on the problem of detecting shifts in the mean level of a process.
Michele Scagliarini, Mariarosaria Apreda, Ulrich Wienand, Giorgia Valpiani, Nicola Napoli   +4 more
doaj   +1 more source

Quantifying Daily Vertical Heat Flux in the Loop Current System: A Quasi‐Lagrangian Assessment of Frontal Hotspots

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Vertical heat exchange within the upper ocean critically influences regional climate but remains difficult to observe directly. In the Gulf of Mexico, the Loop Current and its associated eddies significantly enhance this exchange. High‐resolution glider observations reveal that this transport is dominated by sub‐daily variability an order of ...
Sakib Mahmud, Xiao Ge, Uchenna Nwankwo, Anthony Knap, Steven F. DiMarco   +4 more
wiley   +1 more source

Nonparametric Double EWMA Control Chart for Process Monitoring [PDF]

, 2016
In monitoring process parameters, we assume normality of the quality characteristic of interest, which is an ideal assumption. In many practical situations, we may not know the distributional behavior of the data, and hence, the need arises use ...
Riaza, Muhammad, Muhammad Riaza, Saddam Akber Abbasib, Abbasib, Saddam Akber   +3 more
core   +1 more source