Results 21 to 30 of about 31,843 (312)

Image compression with anisotropic diffusion [PDF]

, 2008
Compression is an important field of digital image processing where well-engineered methods with high performance exist. Partial differential equations (PDEs), however, have not much been explored in this context so far. In our paper we introduce a novel
Welk, Martin, Seidel, Hans-Peter, Gali´c, Irene, Seidel, Hans Peter, Joachim Weickert, Weickert, Joachim, Irena Galić, Hans-Peter Seidel, Belyaev, A., Galic, I., Andrés Bruhn, Bruhn, Andrés, Belyaev, Alexander, Alexander Belyaev, Bruhn, A., Seidel, H. ; https://orcid.org/, Galic, Irena, Martin Welk, Welk, M., Weickert, J.   +19 more
core   +1 more source

Raychaudhuri equation in an anisotropic universe with anisotropic sources [PDF]

Gravitation and Cosmology, 2015
6 pages, 10 ...
openaire   +2 more sources

Anisotropic three-dimensional MHD turbulence [PDF]

, 1996
Direct spectral method simulation of the three-dimensional magnetohydrodynamics (MHD) equations is used to explore anisotropy that develops from initially isotropic fluctuations as a consequence of a uniform applied magnetic field.
Matthaeus, William H., Oughton, Sean, Roberts, D. Aaron, Ghosh, Sanjoy, William H. Matthaeus, D. Aaron Roberts, Sanjoy Ghosh, Sean Oughton   +7 more
core   +1 more source

On the theory of translationally invariant magnetohydrodynamic equilibria with anisotropic pressure and magnetic shear [PDF]

, 2015
Funding: STFC Doctoral Training Grant ST/K502327/1 (Jonathan Hodgson) and STFC Consolidated Grant ST/K000950/1 (Thomas Neukirch)We present an improved formalism for translationally invariant magnetohydrodynamic equilibria with anisotropic pressure and ...
Neukirch, Thomas, T. Neukirch, Hodgson, Jonathan David Brockie, J.D.B. Hodgson   +3 more
core   +1 more source

Anisotropic creep model for soft soils [PDF]

, 2008
In this paper a new anisotropic model for time-dependent behaviour of soft soils is presented. The formulation is based on a previously developed isotropic creep model, assuming rotated Modified Cam Clay ellipses as contours of volumetric creep strain ...
Leoni, Martino, EC MRTN-CT-2004–512120 (Funder), , EC MRTN-CT-2004–512120 (Funder), , Academy of Finland Grant 210744 (Funder), Academy of Finland Grant 210744 (Funder), , University of Stuttgart, Vermeer, Pieter, University of Stuttgart, University of Strathclyde, , University of Strathclyde, Karstunen, Minna   +10 more
core   +1 more source

Anisotropic singular logistic equations [PDF]

Opuscula Mathematica
We consider a parametric Dirichlet problem driven by the anisotropic \((p,q)\)-Laplacian and a reaction with a singular term and a superdiffusive logistic perturbation.
João Pablo Pinheiro Da Silva, Giuseppe Failla, Leszek Gasiński, Nikolaos S. Papageorgiou   +3 more
doaj   +1 more source

Conditioning of Finite Element Equations with Arbitrary Anisotropic Meshes [PDF]

, 2014
Bounds are developed for the condition number of the linear finite element equations of an anisotropic diffusion problem with arbitrary meshes. They depend on three factors.
Kamenski, Lennard, Huang, Weizhang, Xu, Hongguo   +2 more
core   +1 more source

Thermal Effect on Elastic Waves of Anisotropic Saturated Porous Solid

Modelling and Simulation in Engineering, 2011
The motion equations of anisotropic media, coupled to the mass conservation and thermoequilibrium equations of fluid, are studied here based on the standard space of physical presentation for thermoelastic dynamics of anisotropic saturated porous solids.
S. H. Guo
doaj   +1 more source

Gravitational decoupled anisotropies in compact stars

European Physical Journal C: Particles and Fields, 2018
Simple generic extensions of isotropic Durgapal–Fuloria stars to the anisotropic domain are presented. These anisotropic solutions are obtained by guided minimal deformations over the isotropic system.
Luciano Gabbanelli, Ángel Rincón, Carlos Rubio   +2 more
doaj   +1 more source

Numerical Study on an RBF-FD Tangent Plane Based Method for Convection–Diffusion Equations on Anisotropic Evolving Surfaces

Entropy, 2022
In this paper, we present a fully Lagrangian method based on the radial basis function (RBF) finite difference (FD) method for solving convection–diffusion partial differential equations (PDEs) on evolving surfaces.
Nazakat Adil, Xufeng Xiao, Xinlong Feng
doaj   +1 more source