Results 21 to 30 of about 362,453 (271)

Homothety curvature homogeneity and homothety homogeneity [PDF]

open access: yesAnnals of Global Analysis and Geometry, 2015
This article supersedes arXiv:1309 ...
García-Río, E.   +2 more
openaire   +2 more sources

Bayesian Numerical Homogenization [PDF]

open access: yes, 2014
Numerical homogenization, i.e. the finite-dimensional approximation of solution spaces of PDEs with arbitrary rough coefficients, requires the identification of accurate basis elements.
Owhadi, Houman
core   +3 more sources

Homogenization of oblique boundary value problems

open access: yesAdvanced Nonlinear Studies, 2023
We consider a nonlinear Neumann problem, with periodic oscillation in the elliptic operator and on the boundary condition. Our focus is on problems posed in half-spaces, but with general normal directions that may not be parallel to the directions of ...
Choi Sunhi, Kim Inwon C.
doaj   +1 more source

Homogeneous bands [PDF]

open access: yesAdvances in Mathematics, 2018
A countable band $B$ is called homogeneous if every isomorphism between finitely generated subbands extends to an automorphism of $B$. In this paper we give a complete classification of all the homogeneous bands. We prove that a homogeneous band belongs to the variety of regular bands, and has a homogeneous structure semilattice.
openaire   +3 more sources

Homogenization of an ensemble of interacting resonant scatterers [PDF]

open access: yes, 2017
We study theoretically the concept of homogenization in optics using an ensemble of randomly distributed resonant stationary atoms with density $\rho$. The ensemble is dense enough for the usual condition for homogenization, viz.
Browaeys, A.   +4 more
core   +1 more source

Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2023
The Fe-bearing intermetallic phases present in the as-cast AA6026 alloy and their evolution during homogenization treatments at 480-550°C were investigated using optical microscopy, SEM, and TEM techniques in combination with EDS analysis. In addition to
Radetić T.   +4 more
doaj   +1 more source

Snowbeds are more affected than other subalpine–alpine plant communities by climate change in the Swiss Alps

open access: yesEcology and Evolution, 2016
While the upward shift of plant species has been observed on many alpine and nival summits, the reaction of the subalpine and lower alpine plant communities to the current warming and lower snow precipitation has been little investigated so far.
Magalì Matteodo   +3 more
doaj   +1 more source

Changes in beta diversity and species functional traits differ between saplings and mature trees in an old‐growth forest

open access: yesEcology and Evolution, 2021
Invasion by generalist tree species can cause biotic homogenization, and such community impoverishment is likely more important in rare forest types. We quantified changes in tree diversity within Carolinian (range in Central Hardwood Forest), central ...
David Anthony Kirk   +3 more
doaj   +1 more source

Symplectic Homogenization

open access: yesJournal de l’École polytechnique — Mathématiques, 2022
Let H(q,p) be a Hamiltonian on T * T n . Under suitable assumptions on H, we show that the sequence (H k ) k≥1 defined by H k (q,p)=H(kq,p) converges in the γ-topology—defined in [Vit92]—to an integrable continuous Hamiltonian H ¯(p). This is extended to the case of non-autonomous Hamiltonians, and the more general setting in which only some of the ...
openaire   +2 more sources

Conditions for spontaneous homogenization of the Universe [PDF]

open access: yes, 2010
The present-day Universe appears to be homogeneous on very large scales. Yet when the casual structure of the early Universe is considered, it becomes apparent that the early Universe must have been highly inhomogeneous.
A. Krasiński   +33 more
core   +1 more source

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