Results 21 to 30 of about 2,311 (163)

A Simple Approach for Monitoring Business Service Time Variation

The Scientific World Journal, 2014
Control charts are effective tools for signal detection in both manufacturing processes and service processes. Much of the data in service industries comes from processes having nonnormal or unknown distributions.
Su-Fen Yang, Barry C. Arnold
doaj   +1 more source

The analytical framework for optimizing TCP retransmission algorithm based on adjustment of its EWMA parameters [PDF]

International Journal of Electronics and Telecommunications
In this paper we derive mathematical description of TCP (Transmission Control Protocol) retransmission probability based on Jacobson’s smoothing algorithm that belongs to EWMA (Exponentially Weighted Moving Average) category.
Michał Grabowski, Robert Janowski
doaj   +3 more sources

Performance evaluation of internal quality control rules, EWMA, CUSUM, and the novel machine learning model

Türk Biyokimya Dergisi, 2021
The present study set out to build a machine learning model to incorporate conventional quality control (QC) rules, exponentially weighted moving average (EWMA), and cumulative sum (CUSUM) with random forest (RF) algorithm to achieve better performance ...
Çubukçu Hikmet Can
doaj   +1 more source

Variations of High-Intensity GPS Derived Measures between Playing Status during a Full Soccer Season in a Professional Male Team

Journal of Men's Health, 2022
Background: This study’s aim was twofold: (i) to compare starters and non-starters on a professional soccer team in terms of variations in training intensity indexes across a season, calculated through total distance, sprint distance, accelerations (Acc),
Hadi Nobari, Roghayyeh Gholizadeh, Alexandre Duarte Martins, Ricardo De la Vega, Rafael Oliveira   +4 more
doaj   +1 more source

EWMA Chart and Measurement Error [PDF]

Journal of Applied Statistics, 2004
Measurement error is a usually met distortion factor in real-world applications that influences the outcome of a process. In this paper, we examine the effect of measurement error on the ability of the EWMA control chart to detect out-of-control situations. The model used is the one involving linear covariates.
Maravelakis, Petros, Panaretos, John, Psarakis, Stelios   +2 more
openaire   +2 more sources

Redes neuronales aplicadas al control estadístico de procesos con cartas de control EWMA

Tecnura, 2023
Contexto: Existe una creciente necesidad de monitorear y predecir variables críticas en procesos productivos; por tanto, a partir del enfoque de control estadístico, se ha asumido desde el uso de cartas de control para mediciones individuales.
Ruth Milena Suárez Castro, Iván Darío Ladino Vega   +1 more
doaj   +1 more source

A novel Bayesian Max-EWMA control chart for jointly monitoring the process mean and variance: an application to hard bake process

Scientific Reports, 2023
In this article, we introduce a novel Bayesian Max-EWMA control chart under various loss functions to concurrently monitor the mean and variance of a normally distributed process.
Javed Iqbal, Muhammad Noor-ul-Amin, Imad Khan, Salman A. AlQahtani, Uzma Yasmeen, Bakhtyar Ahmad   +5 more
doaj   +1 more source

Real-time quality control of nuchal translucency measurements using the exponentially weighted moving average chart

Taiwanese Journal of Obstetrics & Gynecology, 2021
Objective: The establishment of ongoing audits for first-trimester nuchal translucency (NT) measurements is of paramount importance. The exponentially weighted moving average (EWMA) chart has been published as an efficient tool for NT quality control ...
Martin Hynek, Jana Zvárová, Dagmar Smetanová, David Stejskal, Jan Kalina   +4 more
doaj   +1 more source

Performance Evaluation of Triggering Patient‐Based Real‐Time Quality Control Alarms for Insufficient Remaining Amounts of K+, Na+, and Cl− Reagents Based on Three Data Truncation Methods

iLABMED, EarlyView.
Notably, our findings demonstrated that in specific reagent depletion conditions, the tail‐retention and tail‐shrinkage methods exhibited superior sensitivity compared with instrument alarms, providing earlier warnings during continuous sample processing.
Rong Zheng, Xuemei Wei, Jie Feng, Lin Zhu, Fei Guo, Hui Ding, Yanhong Gao   +6 more
wiley   +1 more source

Neutrosophic multivariate EWMA control chart

Decision Science Letters, 2023
The MEWMA chart is one of the traditional multivariate charts which are widely employed in inspecting the quality of manufacturing and services. This chart is created through monitoring the small shifts of mean vectors of variable quality characteristics.
Wibawati Wibawati, Muhammad Ahsan, Hidayatul Khusna   +2 more
openaire   +2 more sources