Results 11 to 20 of about 1,206,650 (354)
Triangulated Manifolds with Few Vertices: Centrally Symmetric Spheres and Products of Spheres [PDF]
arXiv, 2004 The aim of this paper is to give a survey of the known results concerning centrally symmetric polytopes, spheres, and manifolds. We further enumerate nearly neighborly centrally symmetric spheres and centrally symmetric products of spheres with dihedral or cyclic symmetry on few vertices, and we present an infinite series of vertex-transitive nearly ...
Lutz, Frank H.
arxiv +4 more sources
Nonparametric Rotations for Sphere-Sphere Regression [PDF]
Journal of the American Statistical Association, 2018 Regression of data represented as points on a hypersphere has traditionally been treated using parametric families of transformations that include the simple rigid rotation as an important, special case. On the other hand, nonparametric methods have generally focused on modeling a scalar response through a spherical predictor by representing the ...
Di Marzio M. +2 more
openaire +5 more sources
La recerca de nous instruments per a la protecció dels paisatges patrimonials rurals
Documents d'Anàlisi Geogràfica, 2020 L’article vol avaluar l’instrument Grand Site Paysager mitjançant l’anàlisi de la seva implantació a Valònia per reflexionar sobre si aquestes eines poden ser útils per preservar els paisatges del patrimoni rural.
Serge Schmitz, Laurent Bruckmann
doaj +1 more source
Three Dimensional Change Detection Using Point Clouds: A Review
Geomatics, 2022 Change detection is an important step for the characterization of object dynamics at the earth’s surface. In multi-temporal point clouds, the main challenge is to detect true changes at different granularities in a scene subject to significant noise and ...
Abderrazzaq Kharroubi +4 more
doaj +1 more source
Greater Greenland Ice Sheet contribution to global sea level rise in CMIP6
Nature Communications, 2020 The potential contribution of Greenland Ice Sheet to sea level rise in the future is known to be substantial. Here, the authors undertake new modelling showing that the Greenland Ice Sheet sea level rise contribution is 7.9 cm more using the CMIP6 SSP585
Stefan Hofer +6 more
doaj +1 more source
Physics 2020, 2(3), 383-396, 2020 Three unit spheres were used to represent the two-qubit pure states. The three spheres are named the base sphere, entanglement sphere, and fiber sphere. The base sphere and entanglement sphere represent the reduced density matrix of the base qubit and the non-local entanglement measure, concurrence, while the fiber sphere represents the fiber qubit via
arxiv +1 more source
The 10 micron amorphous silicate feature of fractal aggregates and compact particles with complex shapes [PDF]
, 2005 We model the 10 micron absorption spectra of nonspherical particles composed of amorphous silicate. We consider two classes of particles, compact ones and fractal aggregates composed of homogeneous spheres.
A. de Koter +35 more
core +6 more sources
Journal of Mathematical Physics, 2016 We construct a family of constant curvature metrics on the Moyal plane and compute the Gauss–Bonnet term for each of them. They arise from the conformal rescaling of the metric in the orthonormal frame approach. We find a particular solution, which corresponds to the Fubini–Study metric and which equips the Moyal algebra with the geometry of a ...
Andrzej Sitarz +3 more
openaire +5 more sources
Vitrification of Donkey Sperm: Is It Better Using Permeable Cryoprotectants?
Animals, 2020 Vitrification by direct exposure of sperm to liquid nitrogen is increasing in popularity as an alternative to conventional freezing. In this study, the effect of permeable cryoprotectant agents for donkey sperm vitrification was compared to an extender ...
Manuel Hidalgo +4 more
doaj +1 more source