Results 111 to 120 of about 52,118 (271)

Estimation of Calibration Uncertainties in the Detector-Based Photometric Calibrations

Acta Physica Polonica A, 2008
Uncertainty evaluations in the photometric calibrations and established uncertainty budgets at National Metrology Institute of Turkey (TUBITAK-UME) are presented. Uncertainty analyses are cover calibrations of the luminous intensity, the luminous flux and the luminance properties of the optical light source. The combined uncertainty in each photometric
openaire   +2 more sources

Accuracy of Diagnostic Codes and Algorithms Used to Identify Rheumatoid Arthritis and Juvenile Idiopathic Arthritis in Administrative Claims and Electronic Health Records: Systematic Review and Meta‐Analysis

Arthritis Care &Research, EarlyView.
Objective This systematic review aimed to assess the diagnostic accuracy of algorithms used to identify rheumatoid arthritis and juvenile idiopathic arthritis in electronic health records. Methods We searched Medline, Embase, and Cochrane Central Register for Controlled Trials databases and included studies that validated case definitions against a ...
Constanza Saka‐Herrán, Jessica Bennett, Yara Alkabti, Muhammad Fatir, Barbara Clyne, Caroline McCarthy, Gráinne Tynan, Nikki Dunne, Michelle Flood, Eoghan McCarthy, Frank Moriarty   +10 more
wiley   +1 more source

Evolving techniques for enhanced estimation: A comprehensive survey of stratified sampling and post-stratification methods

AIP Advances
This comprehensive review delves into the landscape of estimators used in stratified sampling and post-stratification to estimate crucial population parameters, such as mean, median, variance, proportion, and distribution function. This study extensively
G. R. V. Triveni, Faizan Danish, Kassim Tawiah   +2 more
doaj   +1 more source

Robust direct position determination methods in the presence of array model errors

EURASIP Journal on Advances in Signal Processing, 2018
Direct position determination (DPD) methods are known to have many advantages over the traditional two-step localization method, especially for low signal-to-noise ratios (SNR) and/or short data records.
Ding Wang, Jiexin Yin, Ruirui Liu, Zhidong Wu, Tao Tang   +4 more
doaj   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

Advanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello, Qaisar Nawaz, Pier Francesco Ferrari, Laura Pastorino, Roberto Raiteri, Aldo R. Boccaccini   +5 more
wiley   +1 more source

A general class of improved population variance estimators under non-sampling errors using calibrated weights in stratified sampling

Scientific Reports
This paper proposes a new calibration estimator for population variance within a stratified two-phase sampling design. It takes into account random non-response and measurement errors, specifically applying this method to estimate the variance in Gas ...
M. K. Pandey, G. N. Singh, Tolga Zaman, Aned Al Mutairi, Manahil SidAhmed Mustafa   +4 more
doaj   +1 more source

Correcting for misclassification error in gross flows using double sampling: moment-based inference vs. likelihood-based inference

, 2004
Gross flows are discrete longitudinal data that are defined as transition counts, between a finite number of states, from one point in time to another. We discuss the analysis of gross flows in the presence of misclassification error via double sampling ...
Tzavidis, N.
core  

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Real-time state estimation in a flight simulator using fNIRS.

PLoS ONE, 2015
Working memory is a key executive function for flying an aircraft. This function is particularly critical when pilots have to recall series of air traffic control instructions. However, working memory limitations may jeopardize flight safety.
Thibault Gateau, Gautier Durantin, Francois Lancelot, Sebastien Scannella, Frederic Dehais   +4 more
doaj   +1 more source

Automatic Calibration in Adaptive Filters to EMG Signals Processing

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2019
In this work, an adaptive filtering that includes an automatic calibration process to acquire EMG (electromyography) signals has been implemented. We propose a novel technique called “autocalibration” to minimize the noise generated by the contact of the
Christian Salamea Palacios, Santiago Luna Romero   +1 more
doaj   +1 more source