Results 21 to 30 of about 424,036 (273)
Inhomogeneous string cosmologies [PDF]
Physical Review D, 1997 We present exact inhomogeneous and anisotropic cosmological solutions of low-energy string theory containing dilaton and axion fields. The spacetime metric possesses cylindrical symmetry. The solutions describe ever-expanding universes with an initial curvature singularity and contain known homogeneous solutions as subcases.
Barrow, John D., Kunze, Kerstin E.
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Archives of Mechanics, 2022 The present article deals with the propagation of inhomogeneous waves in an orthotropic medium based on Eringen’s nonlocal thermoelasticity. For chosen directions of propagation and a real finite inhomogeneity parameter, a complex slowness vector is ...
D.X. Tung
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Inhomogeneous Partition Regularity [PDF]
The Electronic Journal of Combinatorics, 2020 We say that the system of equations $Ax = b$, where $A$ is an integer matrix and $b$ is a (non-zero) integer vector, is partition regular if whenever the integers are finitely coloured there is a monochromatic vector $x$ with $Ax = b.$ Rado proved that the system $Ax = b$ is partition regular if and only if it has a constant solution.
Leader, Imre, Russell, Paul A.
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IEEE Access, 2018 In this paper, underwater visible light communication (UWVLC) vertical links are modeled and evaluated, taking account of the inhomogeneous nature of underwater (UW) environment.
Noha Anous +3 more
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Inhomogeneous quantum walks [PDF]
Physical Review A, 2009 11 ...
Linden, Noah, Sharam, James
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Applied Sciences, 2023 The inhomogeneous settlement of subgrade seriously affects the safety of aircraft operation. To investigate the mechanical response of pavement slabs supported on an inhomogeneous settlement, a three-dimensional model of aircraft load–pavement structure ...
Xin Huang +4 more
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Analogue of the Kubo Formula for Conductivity of Spatially Inhomogeneous Systems and Electric Fields [PDF]
, 2003 The average of densities of currents and charges, induced by a weak electromagnetic field in spatially inhomogeneous are calculated at final temperatures.
A. A. Abrikosov +14 more
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3-D Printed All-Dielectric GRIN Lens Antenna With an Integrated Feeder
IEEE Open Journal of Antennas and Propagation, 2023 In this paper we present the design, fabrication, and experimental verification of a new type of Graded-index (GRIN) lens antenna with an integrated feeder.
Anastasios Paraskevopoulos +5 more
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Wronskian-type formula for inhomogeneous TQ-equations
, 2020 The transfer-matrix eigenvalues of the isotropic open Heisenberg quantum spin-1/2 chain with non-diagonal boundary magnetic fields are known to satisfy a TQ-equation with an inhomogeneous term.
Nepomechie, Rafael I.
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Casimir stress in an inhomogeneous medium [PDF]
, 2009 The Casimir effect in an inhomogeneous dielectric is investigated using Lifshitz's theory of electromagnetic vacuum energy. A permittivity function that depends continuously on one Cartesian coordinate is chosen, bounded on each side by homogeneous ...
Ball +35 more
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