Results 21 to 30 of about 161,416 (264)

A Comparison of Correlation Coefficients via a Three-Step Bootstrap Approach [PDF]

open access: yes, 2010
In this article we compare ten correlation coefficients using a three-step bootstrap approach (TSB). A three-step bootstrap is applied to determine the optimal repetitions, $B$, to estimate the standard error of the statistic with certain degree of ...
Elsayigh, A.   +2 more
core   +1 more source

JMASM9: Converting Kendall’s Tau For Correlational Or Meta-Analytic Analyses [PDF]

open access: yes, 2003
Expanding on past research, this study provides researchers with a detailed table for use in meta-analytic applications when engaged in assorted examinations of various r-related statistics, such as Kendall’s tau (τ) and Cohen’s d, that estimate the ...
Walker, David A.
core   +1 more source

On kernel-based estimation of conditional Kendall’s tau: finite-distance bounds and asymptotic behavior

open access: yesDependence Modeling, 2019
We study nonparametric estimators of conditional Kendall’s tau, a measure of concordance between two random variables given some covariates. We prove non-asymptotic pointwise and uniform bounds, that hold with high probabilities.
Derumigny Alexis, Fermanian Jean-David
doaj   +1 more source

Association (Kendall’s tau) of subject characteristics with model improvement (on/off medication).

open access: yes, 2023
Association (Kendall’s tau) of subject characteristics with model improvement (on/off medication).
Luc J. W. Evers (4707700)   +25 more
core   +1 more source

Is CT-based perfusion and collateral imaging sensitive to time since stroke onset?

open access: yesFrontiers in Neurology, 2015
PurposeCT-based perfusion and collateral imaging is increasingly used in the assessment of patients with acute stroke. Time of stroke onset is a critical factor in determining eligibility for and benefit from thrombolysis. Animal studies predict that the
Smriti eAgarwal   +8 more
doaj   +1 more source

Simulation of potential evapotranspiration values based on vine copula

open access: yesMeteorological Applications, 2021
Vine copula had a great impact on the study and analysis of dependence structures in various sciences. In multivariate analyses with dimensions of more than two variables, it is associated with computational complexities that solve vine copulas and these
Abbas Khashei‐Siuki   +3 more
doaj   +1 more source

The novel MAPT mutation K298E:mechanisms of mutant tau toxicity, brain pathology and tau expression in induced fibroblast-derived neurons [PDF]

open access: yes, 2013
Frontotemporal lobar degeneration (FTLD) is the one of the most frequent neurodegenerative disorders characterized by behavioral and executive impairment, language disorders and motor dysfunction.
Holton, Janice L.   +27 more
core   +1 more source

Application of vine copulas to dependence analysis of water quality data [PDF]

open access: yesJournal of Applied Research in Water and Wastewater, 2022
In this study, using vine copulas and tree sequences, dependence analysis of groundwater quality variables (Total hardness (TH), Sodium adsorption ratio (SAR), Sodium percentage (Na %) and magnesium (Mg)) was performed.
Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

Tau pathology is present in vivo and develops in vitro in sensory neurons from human P301S Tau transgenic mice : a system for screening drugs against tauopathies [PDF]

open access: yes, 2015
Intracellular tau aggregates are the neuropathological hallmark of several neurodegenerative diseases, including Alzheimer's disease, progressive supranuclear palsy, and cases of frontotemporal dementia, but the link between these aggregates and ...
Horne, Graeme   +10 more
core   +1 more source

Early Warning Signals for Bearing Failure Using Detrended Fluctuation Analysis

open access: yesApplied Sciences, 2020
Prognostic techniques play a critical role in predicting upcoming faults and failures in machinery or a system by monitoring any deviation in the operation.
Laith Shalalfeh, Ashraf AlShalalfeh
doaj   +1 more source

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