Buscar
Mostrando ítems 1-10 de 108
Riemann normal coordinates, Fermi reference system and the geodesic deviation equation
(1999)
We obtain the integral formulae for computing the tetrads and metric components in Riemann normal coordinates and the Fermi coordinate system of an observer in arbitrary motion. Our approach admits an essential enlarging ...
Riemann normal coordinates, Fermi reference system and the geodesic deviation equation
(1999)
We obtain the integral formulae for computing the tetrads and metric components in Riemann normal coordinates and the Fermi coordinate system of an observer in arbitrary motion. Our approach admits an essential enlarging ...
Exatidão das coordenadas topográficas de pontos obtidas a partir de levantamentos geodésicos com receptor GPS L1-L2 no método relativo semiestático
(Universidade Federal de Santa MariaBrasilUFSMCentro de Ciências Rurais, 2011-01-06)
The appearance the satellite of geodesy revolutionized the geodesic survey. However, the
utilization of results obtained in surveys of local topographic planes, using the traditional
methodology, present some operational ...
Kinetic ion effect on geodesic acoustic Alfven modes in tokamaks
(AMER INST PHYSICS, 2009)
Using a quasitoroidal set of coordinates with coaxial circular magnetic surfaces, the Vlasov equation is solved for collisionless plasmas, and the dielectric tensor is found for large aspect ratio tokamaks in a low frequency ...
Some properties of the Riemannian distance function and the position vector X, with applications to the construction of Lyapunov functions
(Ieee, 2010-01-01)
The quadratic distance function on a Riemannian manifold can be expressed in terms of the position vector, which in turn can be constructed using geodesic normal coordinates through consideration of the exponential map. ...
Manifold Learning with Orthogonal Geodesic Grids
(2014)
In Reverse Engineering, it is capital to find a parametric trimmed surface which approximates a triangular mesh (2-manifold with border) M in R3 -- This article proposes and implements a quasi isometry f: M -> R2 which ...
Quasi-isometric mesh parameterization using heat-based geodesics and poisson surface fills
(MDPI AG, 2019-01-01)
In the context of CAD, CAM, CAE, and reverse engineering, the problem of mesh parameterization is a central process. Mesh parameterization implies the computation of a bijective map ? from the original mesh M ? R3 to the ...
Alfveacuten continuum deformation by kinetic geodesic effect in rotating tokamak plasmas
(AMER INST PHYSICS, 2010)
Using a quasitoroidal set of coordinates with coaxial circular magnetic surfaces, Vlasov equation is solved for collisionless plasmas in drift approach and a perpendicular dielectric tensor is found for large aspect ratio ...
Ajustamento de linha poligonal no elipsóide
(Universidade Federal de Santa MariaBRGeociênciasUFSMPrograma de Pós-Graduação em Geomática, 2006-04-26)
Traverses Adjustment in the surface of the ellipsoid with the objectives to guarantee
the solution unicity in the transport of curvilinear geodesic coordinates (latitude and
longitude) and in the azimuth transport and ...