Results 21 to 30 of about 976,432 (280)
Deflation-Corrected Estimators of Reliability
Frontiers in Psychology, 2022 Underestimation of reliability is discussed from the viewpoint of deflation in estimates of reliability caused by artificial systematic technical or mechanical error in the estimates of correlation (MEC).
Jari Metsämuuronen
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Frontiers in Psychology, 2022 Critiques of coefficient alpha as an estimate of scale reliability are widespread in the literature. However, the continuous overuse of this statistic in mathematics education research suggests a disconnection between theory and practice.
Yusuf F. Zakariya
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Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023 Background Pulmonary vascular distensibility associates with right ventricular function and clinical outcomes in patients with unexplained dyspnea and pulmonary hypertension.
Jordan Elliott +5 more
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Cronbach’s Alpha and Semantic Overlap Between Items: A Proposed Correction and Tests of Significance
Frontiers in Psychology, 2022 The purpose of the present study was to address the shortcomings of Cronbach’s alpha concerning the semantic overlap between items. Using an example from a motivational measure, the correction of Cronbach’s alpha was applied by partialing out the effects
Ghadah S. Alkhadim
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Modelling of Stochastic Absorption in a Random Medium [PDF]
, 2000 We report a detailed and systematic study of wave propagation through a stochastic absorbing random medium. Stochastic absorption is modeled by introducing an attenuation constant per unit length $\alpha$ in the free propagation region of the one ...
Jayannavar, A. M. +2 more
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Distribution of the least-squares estimators of a single Brownian trajectory diffusion coefficient [PDF]
, 2013 In this paper we study the distribution function $P(u_{\alpha})$ of the estimators $u_{\alpha} \sim T^{-1} \int^T_0 \, \omega(t) \, {\bf B}^2_{t} \, dt$, which optimise the least-squares fitting of the diffusion coefficient $D_f$ of a single $d ...
Boyer, Denis +3 more
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Distortion Coefficients of the $$\alpha $$-Grushin Plane [PDF]
The Journal of Geometric Analysis, 2022 AbstractWe compute the distortion coefficients of the $$\alpha $$ α -Grushin plane. They are expressed in terms of generalised trigonometric functions. Estimates for the distortion coefficients are then obtained and a conjecture of a measure contraction property condition for the generalised Grushin planes is suggested.
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Order alpha^3 ln(1/alpha) Corrections to Positronium Decays [PDF]
, 2000 The logarithmically enhanced alpha^3 ln(1/alpha) corrections to the para- and orthopositronium decay widths are calculated in the framework of dimensionally regularized nonrelativistic quantum electrodynamics.In the case of parapositronium, the ...
A. Czarnecki +32 more
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Coefficient estimates for alpha-spiral functions [PDF]
Bulletin of the Australian Mathematical Society, 1983 Letbelong to the class of α-spiral functions of order ρ(|α| < π/2, 0 ≤ ρ < 1). In this paper, we determine sharp coefficient estimates for functions of the formf(z)t, wheretis a positive integer. We also study the influence of the second coefficient on the other coefficients for such functions. The results obtained not only generalize the results
Bhatia, B. L., Rajasekaran, S.
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The Dependence of Dynamo $\alpha$-Effect on Reynolds Numbers, Magnetic Prandtl Number, and the Statistics of MHD Turbulence [PDF]
, 2001 We generalize the derivation of dynamo coefficient $\alpha$ of Field et al (1999) to include the following two aspects: first, the de-correlation times of velocity field and magnetic field are different; second, the magnetic Prandtl number can be ...
Gruzinov A. +8 more
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