Results 61 to 70 of about 420,626 (277)
Health Science Reports, Volume 8, Issue 11, November 2025.Abstract Background and Aims This study aimed to evaluate and compare the performance of different outbreak detection models for respiratory symptoms visits, identifying their strengths and weaknesses when applied to visit data. Methods In this observational study, data from outpatient centers in the four Iranian provinces of Gilan, Qom, Khuzestan, and
Mojtaba Sepandi, Yousef Alimohamadi
wiley +1 more source
BarekengThe Exponentially Weighted Moving Average (EWMA) control chart is a widely used memory-type control chart known for detecting small shifts in process means.
Erna Tri Herdiani +1 more
doaj +1 more source
AIMS Mathematics, 2023 Control charts are widely used to efficiently detect small to moderate shifts and they include exponentially moving average control charts, named memory type control charts.
Imad Khan +3 more
doaj +1 more source
An adaptive multivariate functional EWMA control chart
Journal of Quality TechnologyIn many modern industrial scenarios, the measurements of the quality characteristics of interest are often required to be represented as functional data or profiles. This motivates the growing interest in extending traditional univariate statistical process monitoring (SPM) schemes to the functional data setting. This article proposes a new SPM scheme,
Capezza, Christian +4 more
openaire +3 more sources
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 +2 more
wiley +1 more source
Application of EWMA chart for monitoring process mean in paper industry [PDF]
Management Science Letters, 2019 This paper presents a statistical process control (SPC) chart for variables in a new feature for the paper machine in the paper industry. The traditional control charts like X-bar and R charts may be inadequate sometimes when the process exhibits ...
S. Ramesh, B.A. Vasu
doaj +1 more source
Quality and Reliability Engineering International, Volume 41, Issue 6, Page 2587-2600, October 2025.ABSTRACT The bias of a control chart is an important factor in practical applications. Average run length (ARL)‐biased control charts have their out‐of‐control (OOC) ARL (ARLOOC) greater than the in‐control (IC) ARL (ARLin) for some values of the monitored parameter.
Nirpeksh Kumar, Subha Chakraborti
wiley +1 more source
BarekengThe main quality characteristic at XYZ Inc. that should be observed is Compressive Strength. Cement production quality control is carried out on the average and process variability jointly with the Max-EWMA control chart.
Eirene Christina Sellyra +2 more
doaj +1 more source
Dispersion chart for some popular distributions under repetitive sampling
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2016 A control chart is an important tool of the statistical process control for monitoring deviations from a stable production process. For this purpose different control schemes have been developed for the fast detection of certain changes in the process ...
Liaquat AHMAD +3 more
doaj +1 more source
Analytical and numerical solutions of average run length integral equations for an EWMA control chart over a long memory SARFIMA process [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2018 The efficiency of a process, especially a long memory seasonal autoregressive fractional integral moving average (SARFIMA) process, has commonly been measured through the quality control chart.
Rapin Sunthornwat +2 more
doaj +1 more source