Results 141 to 150 of about 15,056,914 (247)

A Coupled FE‐FFT Multiscale Framework for Heterogeneous Porous Materials Using preCICE

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT This work presents a coupled finite element–fast Fourier transform (FE–FFT) multiscale framework for the simulation of heterogeneous and graded porous materials. The macroscopic boundary value problem is solved with the finite element (FE) method in Julia using Ferrite.jl, while the microscopic response of periodic unit cells is obtained from ...
Julian Dahler   +2 more
wiley   +1 more source

On the zeros of a class of generalized Dirichlet series.

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1975
openaire   +2 more sources

Degradation of Crystalline Si‐Based Solar Modules With Varying Material Combinations—Part I: Encapsulant Degradation

open access: yesProgress in Photovoltaics: Research and Applications, Volume 34, Issue 12, Page 1527-1551, December 2026.
This work deals with the degradation of solar modules with varying material combinations under accelerated aging conditions. By in situ moisture measurements and simulations of oxygen ingress, the consumption of stabilizing additives and polymer degradation can be correlated spatially resolved with the penetrating stressors.
Robert Heidrich   +11 more
wiley   +1 more source

Inverse problems for semilinear elliptic PDE with a general nonlinearity a(x,u)$a(x,u)$

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract This article studies the inverse problem of recovering a nonlinearity in an elliptic equation Δu+a(x,u)=0$\Delta u + a(x,u) = 0$ from boundary measurements of solutions. Previous results based on first‐order linearization achieve this under a sign condition on ∂ua(x,u)$\partial _u a(x,u)$, and results based on higher order linearization ...
David Johansson   +2 more
wiley   +1 more source

Active inference and artificial reasoning. [PDF]

open access: yesNat Commun
Friston K   +6 more
europepmc   +1 more source

A Geometric Multigrid Preconditioner for Discontinuous Galerkin Shifted Boundary Method

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 21, 15 November 2026.
ABSTRACT I introduce a geometric multigrid preconditioner for the Shifted Boundary Method (SBM) designed to solve PDEs on complex geometries. While the SBM simplifies mesh generation by using a nonconforming background grid, it often results in nonsymmetric linear systems, a complete analysis of which is missing from the literature, especially with ...
Michał Wichrowski
wiley   +1 more source

Brief von Rebecka Lejeune Dirichlet und Flora Lejeune Dirichlet an Walter Arnold Abraham Dirichlet

open access: yes
BRIEF VON REBECKA LEJEUNE DIRICHLET UND FLORA LEJEUNE DIRICHLET AN WALTER ARNOLD ABRAHAM DIRICHLET Brief von Rebecka Lejeune Dirichlet und Flora Lejeune Dirichlet an Walter Arnold Abraham Dirichlet ( -
Dirichlet, Walter Arnold Abraham   +2 more
core   +2 more sources

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