Results 11 to 20 of about 842,649 (290)

Channel-wise Topology Refinement Graph Convolution for Skeleton-Based Action Recognition [PDF]

open access: yesIEEE International Conference on Computer Vision, 2021
Graph convolutional networks (GCNs) have been widely used and achieved remarkable results in skeleton-based action recognition. In GCNs, graph topology dominates feature aggregation and therefore is the key to extracting representative features.
Yuxin Chen   +5 more
semanticscholar   +1 more source

Acoustic non-Hermitian skin effect from twisted winding topology [PDF]

open access: yesNature Communications, 2021
The recently discovered non-Hermitian skin effect (NHSE) manifests the breakdown of current classification of topological phases in energy-nonconservative systems, and necessitates the introduction of non-Hermitian band topology.
Li Zhang   +13 more
semanticscholar   +1 more source

Algebraic topology

open access: yesGraduate Studies in Mathematics, 2020
This lecture covers several basic methods for standard tasks in data analysis and image processing. A non-exclusive and non-exhaustive list of meth-ods: histograms, dimension reduction, clustering, filters, frequency analysis, morphological methods ...
Claudia Scheimbauer
semanticscholar   +1 more source

New light on Bergman complexes by decomposing matroid types [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
Bergman complexes are polyhedral complexes associated to matroids. Faces of these complexes are certain matroids, called matroid types, too. In order to understand the structure of these faces we decompose matroid types into direct summands.
Martin Dlugosch
doaj   +1 more source

Topology optimization of multi-scale structures: a review

open access: yesStructural And Multidisciplinary Optimization, 2021
Multi-scale structures, as found in nature (e.g., bone and bamboo), hold the promise of achieving superior performance while being intrinsically lightweight, robust, and multi-functional.
Jun Wu, O. Sigmund, J. Groen
semanticscholar   +1 more source

Gerty Cori, a Life Dedicated to Chemical and Medical Research

open access: yesFoundations, 2023
This article shows the life and work of Gerty Cori, a woman born in Czechoslovakia and who later became a naturalized American, who spent her whole life researching, together with her husband, in the laboratory to find the cause of some diseases ...
Juan Núñez Valdés
doaj   +1 more source

Higher-order band topology [PDF]

open access: yesNature Reviews Physics, 2020
A conventional topological insulator (TI) has gapped bulk states but gapless edge states. The emergence of the gapless edge states is dictated by the bulk topological invariant of the insulator and the preservation of relevant symmetries.
Biye Xie   +6 more
semanticscholar   +1 more source

On the Wiener Complexity and the Wiener Index of Fullerene Graphs

open access: yesMathematics, 2019
Fullerenes are molecules that can be presented in the form of cage-like polyhedra, consisting only of carbon atoms. Fullerene graphs are mathematical models of fullerene molecules.
Andrey A. Dobrynin, Andrei Yu Vesnin
doaj   +1 more source

Symmetry and Topology in Non-Hermitian Physics [PDF]

open access: yesPhysical Review X, 2018
We develop a complete theory of symmetry and topology in non-Hermitian physics. We demonstrate that non-Hermiticity ramifies the celebrated Altland-Zirnbauer symmetry classification for insulators and superconductors. In particular, charge conjugation is
K. Kawabata   +3 more
semanticscholar   +1 more source

ICrAData - Software for InterCriteria Analysis [PDF]

open access: yesInternational Journal Bioautomation, 2018
In this paper, we consider the InterCriteria Analysis (ICrA), which is based on the index matrices and intuitionistic fuzzy sets. We demonstrate the application of ICrA using the software ICrAData.
Nikolay Ikonomov   +2 more
doaj   +1 more source

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