Results 41 to 50 of about 7,206,815 (339)
On the topology of untrapped surfaces [PDF]
Classical and Quantum Gravity, 2009 Recently a simple proof of the generalizations of Hawking's black hole topology theorem and its application to topological black holes for higher dimensional ($n\geq 4$) spacetimes was given \cite{rnew}. By applying the associated new line of argument it is proven here that strictly stable untrapped surfaces do possess exactly the same topological ...
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Topological Derivative for PDEs on Surfaces [PDF]
SIAM Journal on Control and Optimization, 2022 In this paper we study the problem of the optimal distribution of two materials on smooth submanifolds $M$ of dimension $d-1$ in $\mathbf R^d$ without boundary by means of the topological derivative. We consider a class of shape optimisation problems which are constrained by a linear partial differential equation on the surface. We examine the singular
Peter Gangl, Kevin Sturm
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FRACTAL STRUCTURE OF TITANIUM NITRITE DEPOSITED ON STAINLESS STEEL SUBSTRATE
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2014 On the basis of images obtained using scanning tunneling microscope, it was shown that the fractal dimension can be considered as some universal surface characteristic of the titanium nitrite, deposited on stainless steel.
Yu..V. Brylkin
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Surface Qualification Toolpath Optimization for Hybrid Manufacturing
Journal of Manufacturing and Materials Processing, 2021 Hybrid manufacturing machine tools have great potential to revolutionize manufacturing by combining both additive manufacturing (AM) and subtractive manufacturing (SM) processes on the same machine tool.
Austen Thien +2 more
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Topology Analysis of Bicycle Rim Brake Pad to Improve Braking Performance
MATEC Web of Conferences, 2018 Various parameters of rubber brake pad tribology will affect the braking performance of a rim brake system of a bicycle. Out of those, three main parameters are contact length of brake pad, surface topology of friction surface, and the thickness of rim ...
Keong Le-Onn, Teoh Choe-Yung
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Applied Sciences, 2019 In the present study, nickel phosphorous alloys (Ni-P) and Ni-P/ silicon carbide (SiC) nanocomposite coatings were deposited by electrodeposition on steel substrates in order for their microstructural properties to be assessed while using SEM, XRD, and ...
K. Tsongas +8 more
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The Topology of Surface Singularities [PDF]
, 2020 We consider a reduced complex surface germ (X, p). We do not assume that X is normal at p, and so, the singular locus ( Σ, p) of (X, p) could be one dimensional. This text is devoted to the description of the topology of (X, p). By the conic structure theorem (see Milnor, Singular Points of Complex Hypersurfaces, Annals of Mathematical Studies 61 (1968)
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Multi-legged adaptable crawler capable of maintaining a constant pose locomotion over rugged terrain
Nihon Kikai Gakkai ronbunshu, 2018 In this paper, we introduce practical design and hardware implementation issues of an adaptable crawler mechanism for a mobile robot, enabling it to maintaining its constant desired pose when moving.
Shu TAKAIRA +2 more
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RELATION BETWEEN FRACTAL DIMENSION AND SURFACE ROUGHNESS FOR THE COPPER SAMPLES [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013 Microscopic characteristics of copper surfaces with different roughness were produced using scanning tunnel microscope and fractal analysis.
Yu.V. Brylkin, A.L. Kusov
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Pressure tuning the Fermi surface topology of the Weyl semimetal NbP [PDF]
, 2016 We report on the pressure evolution of the Fermi surface topology of the Weyl semimetal NbP, probed by Shubnikov-de Haas oscillations in the magnetoresistance combined with ab-initio calculations of the band-structure.
R. D. Reis +8 more
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