Results 81 to 90 of about 27,119 (279)

Existence and regularity of solutions to a quasilinear elliptic problem involving variable sources

open access: yesBoundary Value Problems, 2017
The authors of this paper prove the existence and regularity results for the homogeneous Dirichlet boundary value problem to the equation − div ( | ∇ u | p − 2 ∇ u ) = f ( x ) u α ( x ) $-\operatorname{div}(|\nabla u|^{p-2}\nabla u)=\frac{f(x)}{u ...
Ying Chu, Ruimei Gao, Yan Sun
doaj   +1 more source

Error-Driven Dynamical hp-Meshes with the Discontinuous Galerkin Method for Three-Dimensional Wave Propagation Problems

open access: yes, 2013
An hp-adaptive Discontinuous Galerkin Method for electromagnetic wave propagation phenomena in the time-domain is proposed. The method is highly efficient and allows for the first time the adaptive full-wave simulation of transient problems in three ...
Schnepp, Sascha M.
core   +1 more source

Anisotropic generalized polytropic spheres: Regular 3D black holes

open access: yesPhysics of the Dark Universe
17 pages, 9 figures, 1 table, 2 appendix, v2: discussion improved and extended, figures added, references updated, version accepted for ...
Seyed Naseh Sajadi   +3 more
openaire   +3 more sources

Magnetothermal‐Triggered Response and Self‐Healing of Recyclable and Reprocessable Nanocomposites for Actuation Systems

open access: yesAdvanced Functional Materials, EarlyView.
Developing recyclable materials for magnetic robotics that combine rapid response and self‐healing properties is challenging. Hence, this study focuses on the integration of magnetothermal nanoparticles into a dynamic sorbitol‐based vitrimer, a recyclable composite capable of remote actuation and self‐healing by magnetic heating.
Maria Weißpflog   +3 more
wiley   +1 more source

Analysis of the Numerical Diffusion in Anisotropic Mediums: Benchmarks for Magnetic Field Aligned Meshes in Space Propulsion Simulations

open access: yesApplied Sciences, 2016
This manuscript explores numerical errors in highly anisotropic diffusion problems. First, the paper addresses the use of regular structured meshes in numerical solutions versus meshes aligned with the preferential directions of the problem.
Daniel Pérez-Grande   +3 more
doaj   +1 more source

Regularity of harmonic functions for anisotropic fractional Laplacians

open access: yesMathematische Nachrichten, 2010
AbstractWe prove that bounded harmonic functions of anisotropic fractional Laplacians are Hölder continuous under mild regularity assumptions on the corresponding Lévy measure. Under some stronger assumptions the Green function, Poisson kernel and the harmonic functions are even differentiable of order up to three (© 2010 WILEY‐VCH Verlag GmbH & Co.
openaire   +3 more sources

On the uniqueness and regularity of the Primitive Equations imposing additional anisotropic regularity

open access: yesApplied Mathematics Letters, 2005
In this note, we prove that given u a weak solution of the Primitive Equations, imposing an additional condition on the vertical derivative of the velocity u (concretely ∂zu ∈ L∞(0, T;L2(Ω)) ∩ L2(0, T; H1(Ω))), then two different results hold; namely, uniqueness of weak solution (any weak solution associated to the same data that u must coincide with u)
Guillén González, Francisco Manuel   +1 more
openaire   +4 more sources

A Non‐Reciprocal Architected Porous Medium

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies   +2 more
wiley   +1 more source

Regularity under sharp anisotropic general growth conditions

open access: yesDiscrete & Continuous Dynamical Systems - B, 2009
We prove boundedness of minimizers of energy-functionals, for in- stance of the anisotropic type (1) below, under sharp assumptions on the ex- ponents pi in terms of p : the Sobolev conjugate exponent of p; i.e., p = np n p , 1 p = 1 n P n i=1 1 pi .
CUPINI, GIOVANNI   +2 more
openaire   +3 more sources

Coating Artificial Spider Silk Fiber with Magnetic FeCo: An Effective Strategy for Creating a Flexible Magneto‐Responsive Material

open access: yesAdvanced Functional Materials, EarlyView.
An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro   +5 more
wiley   +1 more source

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