A special class of orbits known to exist around a Kerr black hole are spherical -- with constant coordinate radii that not necessarily confined the equatorial plane. Spherical time-like were first studied by Wilkins almost 50 years ago. In present paper, we perform systematic and thorough study these orbits, encompassing extending previous works on them. We simplified forms for parameters orbit...

We present a novel cortical correspondence method employing group-wise registration in a spherical parametrization space for the use in local cortical thickness analysis in human and non-human primate neuroimaging studies. The proposed method is unbiased registration that estimates a continuous smooth deformation field into an unbiased average space via sulcal curve-constrained entropy minimiza...

In this paper we extend the linear transfer function analysis to the two-dimensional shallow water equations in A linear analysis of the shallow water equations in spherical coordinates for the Turkel–Zwas (T–Z) explicit large time-step scheme spherical coordinates for the Turkel–Zwas discretization. is presented. This paper complements the results of Schoenstadt, Actually, we show how to obtai...

Rapidly spreading 3D shape applications have led to the development of content-based 3D shape retrieval research. In this paper, we propose a new retrieval method using Spherical Healpix. Spherical Healpix is a new framework for efficient discretization and fast analysis or synthesis of functions defined on the sphere. We analyzed the construction process of this structure and defined a new Sph...

Employing energy-momentum pseudotensor of Einstein, we obtian the energy distribution of a dyonic dilaton black hole. The energy distribution of this black hole depends on mass M , electric charge Qe, magnetic charge Qm and asymptotic value of the dilaton φ0. We also make some comparisons between the results of Virbhadra et. al. and ours. PASC:04.20.-q, 04.50,+h E-mail:[email protected]...

Based on the image method and addition theorem of spherical vector wave functions, an analytical solution multiple scattering by a buried medium-coated conducting sphere is proposed in this paper. An iterative process to obtain scattered electromagnetic field discussed basis continuous boundary condition plane boundary, medium inner outer surface coated sphere, respectively. Applying fields loc...

Let σ be a simple involution of an algebraic semisimple group G and let H be the subgroup of G of points fixed by σ. If the restricted root system is of type A,C or BC and G is simply connected or if the restricted root system is of type B and G is adjoint, then we describe a standard monomial theory and the equations for the coordinate ring k[G/H ] using the standard monomial theory and the Pl...