Results 61 to 70 of about 2,612,717 (366)

Topology Optimization via Machine Learning and Deep Learning: A Review [PDF]

open access: yesJournal of Computational Design and Engineering, 2022
Topology optimization (TO) is a method of deriving an optimal design that satisfies a given load and boundary conditions within a design domain. This method enables effective design without initial design, but has been limited in use due to high ...
S. Shin, Dongju Shin, Namwoo Kang
semanticscholar   +1 more source

Monoids, their boundaries, fractals and C*-algebras

open access: yesTopological Algebra and its Applications, 2020
In this note we establish some connections between the theory of self-similar fractals in the sense of John E. Hutchinson (cf. [3]), and the theory of boundary quotients of C*-algebras associated to monoids.
dal Verme Giulia, Weigel Thomas
doaj   +1 more source

Infernal and exceptional edge modes: non-Hermitian topology beyond the skin effect

open access: yesJPhys Materials, 2023
The classification of point gap topology in all local non-Hermitian (NH) symmetry classes has been recently established. However, many entries in the resulting periodic table have only been discussed in a formal setting and still lack a physical ...
M Michael Denner   +2 more
doaj   +1 more source

Boundary shape identification method for density based topology optimization

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Topology optimization is an advanced design method that is used to generate lightweight and high-performance structures by determining the material distribution.
Yoshinori NISHIO, Yang LIU, Nagato ONO
doaj   +1 more source

Degeneration of Heegaard genus, a survey [PDF]

open access: yes, 2007
We survey known (and unknown) results about the behavior of Heegaard genus of 3-manifolds constructed via various gluings. The constructions we consider are (1) gluing together two 3-manifolds with incompressible boundary, (2) gluing together the ...
Bachman, David, Derby-Talbot, Ryan
core   +5 more sources

Topological boundary modes in jammed matter [PDF]

open access: yesSoft Matter, 2016
Granular matter at the jamming transition is poised on the brink of mechanical stability, and hence it is possible that these random systems have topologically protected surface phonons. Studying two model systems for jammed matter, we find states that exhibit distinct mechanical topological classes, protected surface modes, and ubiquitous Weyl points.
Tom C. Lubensky   +2 more
openaire   +5 more sources

Thermodynamics of (3+1)-dimensional black holes with toroidal or higher genus horizons [PDF]

open access: yes, 1997
We examine counterparts of the Reissner-Nordstrom-anti-de Sitter black hole spacetimes in which the two-sphere has been replaced by a surface Sigma of constant negative or zero curvature.
A. Ashtekar   +58 more
core   +2 more sources

Nested defects on the boundary of topological superconductors [PDF]

open access: yesPhysical Review B, 2016
11 pages, 9 ...
Adil A. Gangat   +5 more
openaire   +5 more sources

A Novel Mesh Quality Improvement Method for Boundary Elements

open access: yesJournal of Applied Mathematics, 2012
In order to improve the boundary mesh quality while maintaining the essential characteristics of discrete surfaces, a new approach combining optimization-based smoothing and topology optimization is developed. The smoothing objective function is modified,
Hou-lin Liu   +3 more
doaj   +1 more source

Casimir Effect and Global Theory of Boundary Conditions

open access: yes, 2006
The consistency of quantum field theories defined on domains with external borders imposes very restrictive constraints on the type of boundary conditions that the fields can satisfy.
Asorey, M.   +2 more
core   +2 more sources

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