The aim of this study is to propose a method for the evaluation of railway passengers’ comfort in relationship to temperature, noise, and vibration. Estimated the single comfort for every sensation considered, the global comfort is evaluated with the Hyper-Sphere Method proposed by Corriere & Lo Bosco [1]. The humanvehicle-infrastructure-environment variables which influence comfort are individ...

The main thrust of this paper is to investigate the intimate link between the conformal group and singular integral operators, in particular, but not exclusively, operators of Calderón–Zygmund type, together with associated commutators acting on the L spaces of surfaces. Clifford analysis and Dirac operators are the basic tools used to help to unify these themes. These surfaces lie in euclidean...

It is one of the most interesting facts in 4–dimensional topology that even in simply–connected 4–manifolds, not every homology class of degree 2 can be represented by an embedded sphere. In 1978, M. Freedman and R. Kirby showed that many of the obstructions against constructing such a sphere vanish if one modifies the ambient 4–manifold by adding copies of products of spheres, a process which ...

We are studying the influence of stellar multiplicity on exoplanet systems, in particular systems that have been detected via radial-velocity searches. interested closest companions as they would a strong evolution original planet forming disks. In this study we present new during our ongoing survey hosts with VLT/SPHERE. using extreme adaptive optics imager SPHERE at ESO/VLT to search for fain...

Abstract This chapter discusses how the very design of social media impacts civic sphere. Social is not neutral, and from its algorithms through manipulation disinformation individual users, has threatened life. also includes ways in which these concerns have been addressed literacy education. Further, this explores two concepts impact both education use: perspective-taking political polarizati...

In this study an analytical method is developed to obtain the response of electro-magneto-thermo-elastic stress and perturbation of a magnetic field vector for a thick-walled spherical functionally graded piezoelectric material (FGPM). The hollow sphere, which is placed in a uniform magnetic field, is subjected to a temperature gradient, inner and outer pressures and a constant electric potenti...

Let G be a compact Lie group, let RG be a commutative algebra over the sphere G-spectrum SG, and let R be its underlying nonequivariant algebra over the sphere spectrum S. When RG is split as an algebra, as holds for example for RG = MUG, we show how to “extend scalars” to construct a split RG-module MG = RG ∧R M from an R-module M . We also show how to compute the coefficients MG ∗ in terms of...

In this paper, the flow-field of an incompressible viscous flow past a solid-sphere at low Reynolds numbers (up to 270) is investigated numerically. In order to extend the capabilities of the finite volume method, the boundary (body) fitted coordinates (BFC) method is used. Transformation of the partial differential equations to algebraic relations is based on the finite-volume method with coll...

In this paper, the flow-field of an incompressible viscous flow past a solid-sphere at low Reynolds numbers (up to 270) is investigated numerically. In order to extend the capabilities of the finite volume method, the boundary (body) fitted coordinates (BFC) method is used. Transformation of the partial differential equations to algebraic relations is based on the finite-volume method with coll...

in this paper, by modifying cheng-yau$'$s technique to complete hypersurfaces in $s^{n+1}(1)$, we prove a rigidity theorem under the hypothesis of the mean curvature and the normalized scalar curvature being linearly related which improve the result of [h. li, hypersurfaces with constant scalar curvature in space forms, {em math. ann.} {305} (1996), 665--672].