Results 21 to 30 of about 329,929 (341)

Topological complexity of configuration spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 2008
The topological complexity T C ( X ) \mathsf {TC}(X) is a homotopy invariant which reflects the complexity of the problem of constructing a motion planning algorithm in the space X X , viewed as configuration space of a mechanical system.
Farber, Michael, Grant, Mark
openaire   +2 more sources

Multi-material topology optimization based on symmetric level set function using the material definition with perfect symmetric property

open access: yesNihon Kikai Gakkai ronbunshu, 2021
This paper provides a vector-valued level set-based topology optimization method for multiple materials. The proposed method is characterized by a perfectly symmetric representation of multi-material by a vector valued level set function, which lowers ...
Masaki NODA   +2 more
doaj   +1 more source

Topological spectrum of classical configurations [PDF]

open access: yesAIP Conference Proceedings, 2007
For any classical field configuration or mechanical system with a finite number of degrees of freedom we introduce the concept of topological spectrum. It is based upon the assumption that for any classical configuration there exists a principle fiber bundle that contains all the physical and geometric information of the configuration.
Francisco Nettel   +5 more
openaire   +2 more sources

A Reconfigurable Formation and Disjoint Hierarchical Routing for Rechargeable Bluetooth Networks

open access: yesEnergies, 2016
In this paper, a reconfigurable mesh-tree with a disjoint hierarchical routing protocol for the Bluetooth sensor network is proposed. First, a designated root constructs a tree-shaped subnet and propagates parameters k and c in its downstream direction ...
Chih-Min Yu, Yi-Hsiu Lee
doaj   +1 more source

Feeder Topology Configuration and Application Based on IEC 61850

open access: yesEnergies, 2021
Distribution automation (DA) and Internet of Things (IoT) all need the topology information of power distribution network to support some applications, such as fault diagnosis, network reconfiguration and optimization.
Haotian Ge   +4 more
doaj   +1 more source

Configurations with few crossings in topological graphs [PDF]

open access: yesComputational Geometry, 2005
In this paper we study the problem of computing subgraphs of a certain configuration in a given topological graph G such that the number of crossings in the subgraph is minimum. The configurations that we consider are spanning trees, s-t paths, cycles, matchings, and kappa-factors for kappa in {1,2}.
Knauer, Christian   +3 more
openaire   +4 more sources

D-Sphalerons and the Topology of String Configuration Space [PDF]

open access: yes, 2000
We show that unstable D-branes play the role of ``D-sphalerons'' in string theory. Their existence implies that the configuration space of Type II string theory has a complicated homotopy structure, similar to that of an infinite Grassmannian.
Harvey, Jeffrey A.   +2 more
core   +5 more sources

Green's functions and topological configurations [PDF]

open access: yesProceedings of VIIIth Conference Quark Confinement and the Hadron Spectrum — PoS(ConfinementVIII), 2012
There are, among others, currently two important views on the non-perturbative structure of Yang-Mills theory. One is through topological configurations and one is through Green's functions, in particular their (asymptotic) infrared behavior. Based on both views, various scenarios for confinement, chiral symmetry breaking and other non-perturbative ...
openaire   +2 more sources

Topology Configuration and Multihop Routing Protocol for Bluetooth Low Energy Networks

open access: yesIEEE Access, 2017
This paper proposes a new cluster-based on-demand routing protocol to support multihop communication in Bluetooth low energy ad hoc networks. The proposed scheme includes the topology configuration procedure, topology recovery scheme, and on-demand ...
Changsu Jung   +4 more
doaj   +1 more source

Dynamic Modeling of the Electric Transportation Network [PDF]

open access: yes, 2005
We introduce a model for the dynamic self-organization of the electric grid. The model is characterized by a conserved magnitude, energy, that can travel following the links of the network to satisfy nodes' load. The load fluctuates in time causing local
Eguíluz, Víctor M.   +2 more
core   +2 more sources

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