Results 81 to 90 of about 343,728 (300)

Le logement étudiant, l’espace « générationné » et l’urbanisation capitaliste

Lien Social et Politiques, 2021
De nombreuses villes universitaires ont connu le phénomène d’« étudiantisation », par lequel la population étudiante se concentre dans certains quartiers urbains.
Nick Revington
doaj   +1 more source

A dynamic-mode-decomposition-based acceleration method for unsteady adjoint equations at low Reynolds numbers

Theoretical and Applied Mechanics Letters, 2023
The computational cost of unsteady adjoint equations remains high in adjoint-based unsteady aerodynamic optimization. In this letter, the solution of unsteady adjoint equations is accelerated by dynamic mode decomposition (DMD).
Wengang Chen, Jiaqing Kou, Wenkai Yang
doaj   +1 more source

Self-adjoint symmetry operators connected with the magnetic Heisenberg ring

, 2009
We consider symmetry operators a from the group ring C[S_N] which act on the Hilbert space H of the 1D spin-1/2 Heisenberg magnetic ring with N sites. We investigate such symmetry operators a which are self-adjoint (in a sence defined in the paper) and ...
Bernd Fiedler, Boerner H, Boerner H, Clausen M, Fiedler B, Fiedler B, Fiedler B, Fiedler B, Fiedler B, Fiedler B, Fulling S A, Gordon D J, Jakubczyk D, Jakubczyk P, Jakubczyk P, Karbach M, Karbach M, Kerber A, Weyl H, Weyl H   +19 more
core   +1 more source

Topology optimization of thermal fluid flows with an adjoint Lattice Boltzmann Method

Journal of Computational Physics, 2018
This paper presents an adjoint Lattice Boltzmann Method (LBM) coupled with the Level-Set Method (LSM) for topology optimization of thermal fluid flows. The adjoint-state formulation implies discrete velocity directions in order to take into account the ...
Florian Dugast, Y. Favennec, C. Josset, Yilin Fan, L. Luo   +4 more
semanticscholar   +1 more source

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source

Integrable lattices and their sublattices II. From the B-quadrilateral lattice to the self-adjoint schemes on the triangular and the honeycomb lattices

, 2007
An integrable self-adjoint 7-point scheme on the triangular lattice and an integrable self-adjoint scheme on the honeycomb lattice are studied using the sublattice approach.
A. Doliwa, Baxter R. J., Dynnikov I. A., M. Nieszporski, P. M. Santini, Sauer R., Senechal M.   +6 more
core   +1 more source

Adjoints of matroids

Advances in Applied Mathematics
We show that an adjoint of a loopless matroid is connected if and only if it itself is connected. Our first goal is to study the adjoint of modular matroids. We prove that a modular matroid has only one adjoint (up to isomorphism) which can be given by its opposite lattice, and proceed to present some alternative characterizations of modular matroids ...
Fu, Houshan, Tang, Chunming, Wang, Suijie   +2 more
openaire   +2 more sources

Stability Bounds for the Generalized Kadanoff‐Baym Ansatz in the Holstein Dimer

Contributions to Plasma Physics, EarlyView.
ABSTRACT Predicting real‐time dynamics in correlated systems is demanding: exact two‐time Green's function methods are accurate but often too costly, while the Generalized Kadanoff‐Baym Ansatz (GKBA) offers time‐linear propagation at the risk of uncontrolled behavior. We examine when and why GKBA fails in a minimal yet informative setting, the Holstein
Oscar Moreno Segura, Yaroslav Pavlyukh, Riku Tuovinen   +2 more
wiley   +1 more source

Governing Positive Energy Districts: The Role of Legitimation and Identity Across Residential and Industrial Contexts

Environmental Policy and Governance, EarlyView.
ABSTRACT Increasing electricity demand from data centres, industrial applications, electric vehicles and domestic heating is creating pressure to develop electricity systems in many parts of the world, but especially in Western countries. In response to challenges such as grid congestion, interconnection queues and climate‐related hazards, network ...
Jussi Valta, Tuomas Vanhanen, Tuomo Joensuu, Saku Mäkinen   +3 more
wiley   +1 more source

On the adjoint operator in photoacoustic tomography [PDF]

, 2016
Photoacoustic tomography (PAT) is an emerging biomedical imaging from coupled physics technique, in which the image contrast is due to optical absorption, but the information is carried to the surface of the tissue as ultrasound pulses.
S. Arridge, M. Betcke, B. Cox, F. Lucka, B. Treeby   +4 more
semanticscholar   +1 more source