Results 41 to 50 of about 16,499 (156)

A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation. [PDF]

Sensors (Basel), 2023
Wang Y, Zhou T, Xu T, Hu H.
europepmc   +1 more source

Mixed problem for a third order parabolic-hyperbolic model equation

Қарағанды университетінің хабаршысы. Математика сериясы
In 1978, the journal Differential Equations published an article by A.M. Nakhushev, that presented a method for correctly formulating a boundary value problem for a class of second-order parabolic-hyperbolic equations in an arbitrarily bounded domain ...
Zh.A. Balkizov
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The quasilinear parabolic kirchhoff equation

Open Mathematics, 2017
In this paper the existence of solution of a quasilinear generalized Kirchhoff equation with initial – boundary conditions of Dirichlet type will be studied using the Leray – Schauder principle.
Dawidowski Łukasz
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Propagation Attenuation Maps Based on Parabolic Equation Method. [PDF]

Sensors (Basel), 2022
Kryk M, Malon K, Kelner JM.
europepmc   +1 more source

On the time-dependent parabolic wave equation

International Journal of Mathematics and Mathematical Sciences, 2002
One approach to the study of wave propagation in a restricted domain is to approximate the reduced Helmholtz equation by a parabolic wave equation. Here we consider wave propagation in a restricted domain modelled by a parabolic wave equation whose ...
Arthur D. Gorman
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The Clutter Simulation of a Known Terrain by the 3D Parabolic Equation and RCS Computation. [PDF]

Sensors (Basel), 2022
Wang Z, Ding J, Wang M, Yang S.
europepmc   +1 more source

Existence and stability of the doubly nonlinear anisotropic parabolic equation. [PDF]

J Math Anal Appl, 2021
Zhan H, Feng Z.
europepmc   +1 more source

Boundary condition of the volume potential for an elliptic-parabolic equation with a scalar parameter

Electronic Journal of Differential Equations, 2018
Using the descent method for the fundamental solution of the heat equation with a scalar parameter, we find the fundamental solution of the multidimensional Helmholtz equation in an explicit form.
Tynysbek Sh. Kal'menov, Gaukhar D. Arepova, Dana D. Arepova   +2 more
doaj  

The numerical solution of the nonlinear hyperbolic-parabolic heat equation

Discrete and Continuous Models and Applied Computational Science
The article discusses a mathematical model and a finite-difference scheme for the heating process of an infinite plate. The disadvantages of using the classical parabolic heat equation for this case and the rationale for using the hyperbolic heat ...
Vladislav N. Khankhasaev, Safron A. Bairov   +1 more
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Analysis of radio propagation over rough sea surface with parabolic equation

Tongxin xuebao, 2009
An improved impedance boundary method was presented and the initial field was calculated by Green function,which improved the stability and accurateness of the parabolic equation（PE）.Eventually,the forecast of propagation over rough sea surface had been ...
GUO Jian-yan1, WANG Jian-ying2, LONG Yun-liang2   +2 more
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