Results 11 to 20 of about 2,895,298 (310)
Curvature tensor for the spacetime of general relativity [PDF]
International Journal of Geometric Methods in Modern Physics, 2017 In the differential geometry of certain [Formula: see text]-structures, the role of [Formula: see text]-curvature tensor is very well known. A detailed study of this tensor has been made on the spacetime of general relativity. The spacetimes satisfying Einstein field equations with vanishing [Formula: see text]-tensor have been considered and the ...
Ahsan, Zafar, Ali, Musavvir
openaire +3 more sources
Varying Coefficient Tensor Models for Brain Imaging [PDF]
, 2005 We revisit a multidimensional varying-coefficient model (VCM), by allowing regressor coefficients to vary smoothly in more than one dimension, thereby extending the VCM of Hastie and Tibshirani.
Marx, Brian D. +2 more
core +1 more source
Finsler geometry on higher order tensor fields and applications to high angular resolution diffusion imaging. [PDF]
, 2009 We study 3D-multidirectional images, using Finsler geometry. The application considered here is in medical image analysis, specifically in High Angular Resolution Diffusion Imaging (HARDI) (Tuch et al. in Magn. Reson. Med.
Florack, L.M.J. +9 more
core +2 more sources
New Journal of Physics, 2020 Here we present a general approach for the description for the frequency dependent dielectric tensor coefficients for optically anisotropic materials.
C Sturm +4 more
doaj +1 more source
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021 The paper deals with the problems of ordering the reper orientations for a micropolar continuum immersed in an external plane space. Based on the concept of an elementary tensor volume (area) \(M\)-cells, an algorithm for comparing and matching external ...
Evgenii V. Murashkin, Yuri N. Radayev
doaj
Journal of Petroleum Exploration and Production Technology, 2019 Relative permeability is a tensorial property directly dependent on absolute permeability tensor which has been taking both symmetric and non-symmetric (full tensor) forms in the literature.
Mohammad Sedaghat +2 more
doaj +1 more source
Persistence–of–straining and polymer alignment in viscoelastic turbulence
Applications in Engineering Science, 2020 Drag reduction in turbulent flows by the addition of polymers is a phenomenon that has a variety of applications in the engineering. The highly nonlinear interactions between the turbulent flow and the polymers in the polymeric solution still impose ...
Anselmo S. Pereira +2 more
doaj +1 more source
Spline- and tensor-based signal reconstruction : from structure analysis to high-performance algorithms to multiplatform implementations and medical applications [PDF]
, 2015 The problem of signal reconstruction is of fundamental practical value for many applications associated with the field of signal and image processing.
Morozov, Oleksii
core +1 more source
Robust brain network identification from multi-subject asynchronous fMRI data
NeuroImage, 2021 We describe a novel method for robust identification of common brain networks and their corresponding temporal dynamics across subjects from asynchronous functional MRI (fMRI) using tensor decomposition.
Jian Li +3 more
doaj +1 more source
The space generated by metric and torsion tensors, derivation of Einstein-Hilbert equation
Pracì Mìžnarodnogo Geometričnogo Centru, 2014 This paper is devoted to the derivation of field equations in space with the geometric structure generated by metric and torsion tensors. We also study the geometry of the space are generated jointly and agreed by the metric tensor and the torsion tensor.
Николай Иванович Яременко
doaj +1 more source