Results 21 to 30 of about 5,359,566 (332)
A New Analytical Approximation of the Fluid Antenna System Channel [PDF]
IEEE Transactions on Wireless Communications, 2022 Fluid antenna systems (FAS) are an emerging technology that promises a significant diversity gain even in the smallest spaces. It consists of a freely moving antenna in a small linear space to pick up the strongest received signal.
Malek Khammassi +2 more
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Quantitative fluid approximation in transport theory: a unified approach [PDF]
Probability and Mathematical Physics, 2020 We propose a unified method for the large space-time scaling limit of linear collisional kinetic equations in the whole space. The limit is of fractional diffusion type for heavy tail equilibria with slow enough decay, and of diffusive type otherwise ...
E. Bouin, C. Mouhot
semanticscholar +1 more source
Approximate Controllability of Second-Grade Fluids [PDF]
Journal of Dynamical and Control Systems, 2020 This paper deals with the controllability of the second grade fluids, a class of non-Newtonian of differentiel type, on a two-dimensional torus. Using the method of Agrachev-Sarychev [1], [2] and of Sirikyan [26], we prove that the system of second grade fluids is approximately controllable by a finite-dimensional control force.
Ngo, Van-Sang, Raugel, Geneviève
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A transient phase in cosmological evolution : A multi-fluid approximation for a quasi-thermodynamical equilibrium [PDF]
General Relativity and Gravitation, 2019 This article presents the study of a multi-species fluid characterised by a freeze-out or break-away of one or more species. Whereas single-fluid approximation suffices for modelling of the pre freeze-out period, multi-fluid approximation is required for
B. Osano, Timothy Oreta
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Over-Approximation of Fluid Models [PDF]
IEEE Transactions on Automatic Control, 2020 Accepted for publication in IEEE ...
openaire +3 more sources
Open Physics, 2022 The electroosmotic flow of non-Newtonian fluid–Eyring fluid in microparallel pipes under high zeta potential driven by the combination of pressure and electric force is studied.
Zhang Tiange +4 more
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Fluids, 2023 We propose a simple two-step approximation for the radial distribution function of a one-component two-dimensional Yukawa fluid. This approximation is specified by the key parameters of the system: coupling parameter and screening parameter. On the basis
Ilnaz I. Fairushin, Anatolii V. Mokshin
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Approximation of Time-Dependent Viscoelastic Fluid Flow: SUPG Approximation [PDF]
SIAM Journal on Numerical Analysis, 2003 In this article we consider the numerical approximation to the time-dependent viscoelasticity equations with an Oldroyd B constitutive equation. The approximation is stabilized by using a streamline upwind Petrov--Galerkin (SUPG) approximation for the constitutive equation.
Vincent J. Ervin, William W. Miles
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Approximate solution to a generalized Van der Pol equation arising in plasma oscillations
AIP Advances, 2022 Motivated by some published theoretical investigations and based on the two-fluid model, nonlinear plasma oscillations are analyzed and discussed in the framework of the generalized Van der Pol equation.
Weaam Alhejaili +2 more
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Algorithms and error bounds for multivariate piecewise constant approximation [PDF]
, 2011 We review the surprisingly rich theory of approximation of functions of many vari- ables by piecewise constants. This covers for example the Sobolev-Poincar´e inequalities, parts of the theory of nonlinear approximation, Haar wavelets and tree ...
Davydov, Oleg
core +3 more sources