Results 51 to 60 of about 6,021 (172)

Improved EWMA and CUSUM Charts Under Modified Successive Sampling for Monitoring Process Dispersion

Journal of Statistical Theory and Applications (JSTA)
The Statistical Process Control (SPC) toolkit is extensively utilized to identify variations in processes, with control charts serving as the most efficient and commonly employed instrument for real-time process monitoring.
Tahir Mahmood, Mehvish Hyder, Syed Muhammad Muslim Raza   +2 more
doaj   +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

APSS - Software support for decision making in statistical process control [PDF]

, 2018
DOI nefunkční (7.1.2019)Purpose: SPC can be defined as the problem solving process incorporating many separate decisions including selection of the control chart based on the verification of the data presumptions.
Noskievičová, Darja
core   +1 more source

The Application of Six Sigma to Assess the Analytical Performance of Plasma Proteins and Design a Risk‐Based Statistical Quality Control Strategy: A Multicenter Study

Journal of Clinical Laboratory Analysis, Volume 39, Issue 16, August 2025.
The six sigma model can objectively assess the analytical performance of plasma proteins. Different control concentrations yield different sigma values, which are visually displayed through standardized sigma performance verification charts. The six sigma model enables the development of personalized quality control strategies for each assay.
Ming Hu, Jiaping Wang, Huan Yang, Sugang Zang, Tingting Gao, Jian Zeng, Fumeng Yang   +6 more
wiley   +1 more source

On designing an assorted control charting approach to monitor process dispersion: an application to hard-bake process

Journal of Taibah University for Science, 2020
The monitoring of process variability is an important feature to get optimal output from a process. Control charts are vital tools used for efficient process monitoring. The commonly used types of charts include Shewhart, cumulative sum and exponentially
Nasir Abbas, Usman Saeed, Muhammad Riaz, Saddam Akber Abbasi   +3 more
doaj   +1 more source

Long‐term stability analysis of beam shape in a robotic radiosurgery system

Journal of Applied Clinical Medical Physics, Volume 26, Issue 7, July 2025.
Abstract Purpose This study aimed to investigate the long‐term stability of CyberKnife beam profile parameters and assess their compliance with existing quality assurance (QA) guidelines. We evaluated beam profiles in both standard and diagonal planes over 3.5 years post‐installation to detect potential issues and ensure consistent beam quality.
Ryoichi Hinoto, Shiho Kashiyama, Takahisa Eriguchi, Nobuhiro Tsukamoto, Takeji Sakae   +4 more
wiley   +1 more source

A Practical Approach to Implementing ICH Q14: Tools for Analytical Quality by Design in Capillary Electrophoresis Method Development

ELECTROPHORESIS, Volume 46, Issue 13-14, Page 933-953, July 2025.
ABSTRACT The ICH Q14 guideline introduces a structured framework for analytical method development based on Analytical Quality by Design (AQbD) principles, aiming to ensure robust, reliable, and fit‐for‐purpose methods throughout the product lifecycle.
Ewoud van Tricht, Cari E. Sänger ‐ van de Griend   +1 more
wiley   +1 more source

A Spatiotemporal Scheme for Process Control Using Image Analysis of Speckle Patterns

Quality and Reliability Engineering International, Volume 41, Issue 5, Page 1773-1788, July 2025.
ABSTRACT Conventional image‐based process control schemes require distinct, detectable features (e.g., edges or textures). In the absence of such features, current methods fail or require additional preprocessing. They are also prone to false detections from random noise, dirt, or scratches on the surface.
Hamed Sabahno, Davood Khodadad
wiley   +1 more source

Distribution-Free Control Charts Based on Multiple Runs: Advances and Applications in Supply Chain Management [PDF]

International Journal of Mathematical, Engineering and Management Sciences
In this article, we improve the behavior of nonparametric Shewhart-type control charts, which employ order statistics and multiple runs-type rules. The proposed class of monitoring schemes includes some existing control charts.
Ioannis S. Triantafyllou
doaj   +1 more source

An Open Framework for Downscaling Soil Carbon and Clay Maps Using Sensor Data: Five Case Studies Across Diverse European Landscapes

European Journal of Soil Science, Volume 76, Issue 3, May–June 2025.
ABSTRACT Sustainable soil management is recognised as a pivotal solution for addressing current and future global challenges, but existing global and national soil property maps often lack the fine‐scale resolution required for local or intra‐field assessments.
Lucas Carvalho Gomes, Anders Bjørn Møller, Triven Koganti, Suzanne Higgins, Gareth Ridgway, Natasha Crumlish, Renaldas Žydelis, Jonas Volungevičius, Ardas Kavaliauskas, Fenny van Egmond, Henk Kramer, Kees Teuling, İsmail Çinkaya, Mogens H. Greve   +13 more
wiley   +1 more source