Results 11 to 20 of about 106,166 (304)

The two-way parabolic wave equation and reverberation from boundaries. [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1991
The parabolic equation (PE) method has been generalized to handle backscattered energy with the single-scattering approximation. As with the two-way coupled mode method, range-dependent environments are approximated by a sequence of range-independent regions.
Michael D. Collins   +2 more
openaire   +1 more source

A note on solitary travelling-wave solutions to the transformed reduced Ostrovsky equation [PDF]

open access: yes, 2010
Two recent papers are considered in which solitary travelling-wave solutions to the transformed reduced Ostrovsky equation are presented.
Parkes, E.J.
core   +1 more source

A novel spectral technique for 2D fractional telegraph equation models with spatial variable coefficients

open access: yesJournal of Taibah University for Science, 2022
In this paper, a class of the two-dimensional (2D) mathematical models of the time fractional telegraph equation with spatial variable coefficients is considered.
Hoda F. Ahmed, W. A. Hashem
doaj   +1 more source

The unified method for abundant soliton solutions of local time fractional nonlinear evolution equations

open access: yesResults in Physics, 2021
This work studies two important temporal fractional nonlinear evolution equations, namely the (2+1)-dimensional Chaffee–Infante equation and (1+1)-dimensional Zakharov equation by way of the unified method along with properties of local M-derivative. The
Nauman Raza   +4 more
doaj   +1 more source

Some novel integration techniques to explore the conformable M-fractional Schrödinger-Hirota equation

open access: yesJournal of Ocean Engineering and Science, 2022
The current study deals with exact soliton solutions for Schrödinger-Hirota (SH) equation via two modified integration methods. Those methods are known as the improved (G′/G)-expansion method and the Kudryashov method. This model is a generalized version
Asim Zafar   +5 more
doaj   +1 more source

Gravitational path integral from the T 2 deformation

open access: yesJournal of High Energy Physics, 2020
We study a T 2 deformation of large N conformal field theories, a higher dimensional generalization of the T T ¯ $$ T\overline{T} $$ deformation. The deformed partition function satisfies a flow equation of the diffusion type.
Alexandre Belin   +2 more
doaj   +1 more source

Analytical wave solutions of the space time fractional modified regularized long wave equation involving the conformable fractional derivative

open access: yesKarbala International Journal of Modern Science, 2019
The space time fractional modified regularized long wave equation is a model equation to the gravitational water waves in the long-wave occupancy, shallow waters waves in coastal seas, the hydro-magnetic waves in cold plasma, the phonetic waves in ...
M. Hafiz Uddin   +3 more
doaj   +1 more source

Propagator and wave-equation inversion for near-receiver material properties [PDF]

open access: yes, 2004
Near-receiver material properties are required for the separation of the recorded wavefield into upgoing and downgoing P and S waves, and are also important for static time-shift corrections.
Trampert, J.   +2 more
core   +1 more source

A (3 + 1)-dimensional nonlinear extended Zakharov–Kuznetsov dynamical equation: Bifurcation and traveling wave solutions

open access: yesAIP Advances, 2020
This paper studies the (3 + 1) extended Zakharov–Kuznetsov (EZK) dynamical equation that is utilized to describe nonlinear three-dimensional dust-ion-acoustic solitary waves in a magnetized two-ion-temperature dusty plasma.
M. M. Arab
doaj   +1 more source

Wave Equations of Porous Media Saturated With Two Immiscible Fluids Based on the Volume Averaging Method

open access: yesFrontiers in Earth Science, 2021
Simulating and predicting wave propagation in porous media saturated with two fluids is an important issue in geophysical exploration studies. In this work, wave propagation in porous media with specified structures saturated with two immiscible fluids ...
Fansheng Xiong   +10 more
doaj   +1 more source

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