Results 181 to 190 of about 884,568 (273)

Beyond Directions: Symmetry‐Aware Rotation Sets for Triaxial Diffusion Encoding by Geometric Filter Optimization

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2489-2504, November 2026.
ABSTRACT Purpose To improve the accuracy of diffusion‐weighted powder average signals for diffusion encoding with arbitrary b‐tensors. Methods We identify an intrinsic dihedral (D2) symmetry of diffusion signals for arbitrary diffusion encoding, which defines their natural signal space (a quotient of 3D rotations). Based on this, we propose a method to
Sune Nørhøj Jespersen   +1 more
wiley   +1 more source

Radial Tiny Golden Angle UTE (tyGA‐UTE) for Cardiac MRI in the Small Animal Model

open access: yesNMR in Biomedicine, Volume 39, Issue 11, November 2026.
This study validates an 11.7‐T ultra‐high‐field tyGA‐UTE cardiac MRI workflow for murine models, featuring single‐acquisition dual reconstructions for real‐time visualization and quantitative functional assessment. It delivers performance equivalent to standard techniques, excellent reproducibility, and higher efficiency by eliminating repeated scans ...
Hao Li   +4 more
wiley   +1 more source

On Gaussian–Bessel Integrals in Diffusion‐Based Wind‐Turbine Wake Models

open access: yesWind Energy, Volume 29, Issue 11, November 2026.
ABSTRACT The diffusion wake model provides an analytical description of turbine‐wake evolution from a top‐hat profile in the near wake to a self‐similar Gaussian profile in the far wake. The main formulation of the model involves an integral containing the product of linear, Gaussian, and modified Bessel‐function terms. This integral is closely related
Karim Ali
wiley   +1 more source

Van Allen Probes Observations of a Fundamental Poloidal Wave in the Plasmasphere

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract All past spacecraft observations of fundamental poloidal Alfvén (P1) waves attributed to ion drift resonance have been made outside the plasmasphere. In this study, we present the first spacecraft observations of a plasmaspheric P1 wave driven by that resonance.
Kazue Takahashi   +4 more
wiley   +1 more source

Exploring memory effects: Sparse identification in vector-borne diseases. [PDF]

open access: yesProc Natl Acad Sci U S A
Breda D, Tanveer M, Wu J, Zhang X.
europepmc   +1 more source

From tetrachoric to kappa: How to assess reliability on binary scales

open access: yesBritish Journal of Mathematical and Statistical Psychology, Volume 79, Issue 3, Page 744-763, November 2026.
Abstract Reliability is crucial in psychometrics, reflecting the extent to which a measurement instrument can discriminate between individuals or items. While classical test theory and intraclass correlation coefficients are well‐established for quantitative scales, estimating reliability for binary outcomes presents unique challenges due to their ...
Sophie Vanbelle
wiley   +1 more source

Asymptotic standard errors for reliability coefficients in item response theory

open access: yesBritish Journal of Mathematical and Statistical Psychology, Volume 79, Issue 3, Page 702-719, November 2026.
Abstract In a recent review, Liu et al. (Psychological Methods, 2025b) classified reliability coefficients into two types: classical test theory (CTT) reliability and proportional reduction in mean squared error (PRMSE). This article focuses on quantifying the sampling variability of these coefficients under item response theory (IRT) models.
Youjin Sung, Yang Liu
wiley   +1 more source

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