Results 1 to 10 of about 471,455 (198)
Birds land reliably on complex surfaces by adapting their foot-surface interactions upon contact [PDF]
eLife, 2019 Birds land on a wide range of complex surfaces, yet it is unclear how they grasp a perch reliably. Here, we show how Pacific parrotlets exhibit stereotyped leg and wing dynamics regardless of perch diameter and texture, but foot, toe, and claw kinematics
William RT Roderick +3 more
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Complex reflection groups and K3 surfaces I [PDF]
Épijournal de Géométrie Algébrique, 2021 We construct here many families of K3 surfaces that one can obtain as quotients of algebraic surfaces by some subgroups of the rank four complex reflection groups. We find in total 15 families with at worst $ADE$--singularities. In particular we classify
Cédric Bonnafé, Alessandra Sarti
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Frontiers in Materials, 2022 The interplay of abrasive grains and materials complicates the grinding of titanium alloys by abrasive belts. Notably, the influence relationship of surface generation for complex curved workpieces such as hollow blades needs to be clarified, making ...
Guiyun Jiang +4 more
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Nanomaterials, 2021 Optical aspherical lenses with high surface quality are increasingly demanded in several applications in medicine, synchrotron, vision, etc. To reach the requested surface quality, most advanced manufacturing processes are used in closed chain with high ...
Amine Chiboub +7 more
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Method of complex glass relief surfaces mechanical grinding [PDF]
E3S Web of Conferences, 2023 Presented research is devoted to solving the problem of treatment complex glass relief surfaces by mechanical vibration grinding. The dependences of the obtained grinding results on the type of relief surface, grain size and vibration parameters are ...
Zhukova Lyubov, Kozitsyn Ivan
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Mathematical Approach in Complex Surfaces Toolpaths
Mathematics, 2021 This paper represents the focus on developing efficient algorithms that reduce the operations required to be employed in order to obtain complex surfaces milling finishing toolpaths for the three axis NC (Numerical Control) machine within the reverse ...
Florin Popișter +3 more
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Verlinde formulae on complex surfaces: K-theoretic invariants
Forum of Mathematics, Sigma, 2021 We conjecture a Verlinde type formula for the moduli space of Higgs sheaves on a surface with a holomorphic 2-form. The conjecture specializes to a Verlinde formula for the moduli space of sheaves.
L. Göttsche, M. Kool, R. A. Williams
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Representing geometry shape and matter of a complex façade: the church of San Placido in Catania
Disegnare con, 2012 This study investigates the potentialities, the limits and the advantages of the 3D model obtained by means of 3D laser scanner for the documentation and the geometric, formal, materic stdudy of an historical complex façade such as the one of the eight ...
Mariateresa Galizia +2 more
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DEDICATED CNC MILLING STRATEGIES FOR COMPLEX SURFACES [PDF]
Fiabilitate şi Durabilitate, 2023 The parts for the aerospace sector are complex, varied models, with above average hardness, heat treated, resistant to humidity and variable stress.
Adrian BUT, Cristian POPESCU, Lucian GAL
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Advanced Engineering Research, 2023 Introduction. When milling complex-profile surfaces of parts, the selection of tool trajectories and orientations affect the roughness parameters. However, in the studies devoted to the formation of trajectories, recommendations to provide the quality of
M. R. Gimadeev +2 more
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