Results 21 to 30 of about 17,441,971 (121)

On the well-posedness of weakly hyperbolic equations with time-dependent coefficients [PDF]

open access: yes, 2012
30.10.12 KB.
Garetto, Claudia   +7 more
core   +1 more source

Finite-difference solutions of tenth-order boundary-value problems [PDF]

open access: yes, 1994
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In this thesis finite difference methods are used to obtain numerical solutions for a class of high-order ordinary differential equations with applications ...
Siddiqui, Aijaz Ahmad
core   +7 more sources

Higher order parallel splitting methods for parabolic partial differential equations [PDF]

open access: yes, 1995
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis develops two families of numerical methods, based upon new rational approximations to the matrix exponential function, for solving second-order ...
Taj, Malik Shahadat Ali
core   +7 more sources

Shear waves in a nonlinear elastic cylindrical shell [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
Asymptotic integration methods have been used to model the propagation of a shear wave beam along a nonlinear-elastic cylindrical shell of the Sanders – Koiter model. The shell is assumed to be made of a material characterized by a cubic dependence
Zemlyanukhin, Alexandr Isaevich   +2 more
doaj   +1 more source

High-order coupled nonlinear Schrödinger equation and analyzing soliton dynamics in multimode fibers

open access: yesPartial Differential Equations in Applied Mathematics
The behavior of solitons in multimode fibers is investigated using the Connected Higher-Order Nonlinear Schrödinger Equations (CHNSE). A sophisticated algebraic technique is employed to analyze the CHNSE, yielding a variety of exact solutions, including ...
Ikram Ullah   +5 more
doaj   +1 more source

Thermo-electrical buckling response of actuated functionally graded piezoelectric nanoscale plates

open access: yesResults in Physics, 2019
In this work, the analytical investigation of thermo-electrical buckling of a functionally graded piezoelectric nanoscale plate is obtained via a refined hyperbolic higher-order shear deformation theory.
Ashraf M. Zenkour, Maryam H. Aljadani
doaj   +1 more source

Closed-Form Meromorphic Solutions of High-Order and High-Dimensional Differential Equations

open access: yesAxioms
In this paper, we investigate closed-form meromorphic solutions of the fifth-order Sawada-Kotera (fSK) equation and (3+1)-dimensional generalized shallow water (gSW) equation. The study of high-order and high-dimensional differential equations is pivotal
Hongqiang Tu, Yongyi Gu
doaj   +1 more source

Extraction of solitons in multimode fiber for CHNLSEs using improved modified extended tanh function method

open access: yesAlexandria Engineering Journal
The coupled higher-order nonlinear Schrödinger equations (CHNLSEs) are investigated in this paper. This model mimic the actuation of the solitons through multimode fibers.
Ola El-Shamy   +4 more
doaj   +1 more source

A Numerical Implementation of a Nonlinear Mild Slope Model for Shoaling Directional Waves

open access: yesJournal of Marine Science and Engineering, 2014
We describe the numerical implementation of a phase-resolving, nonlinear spectral model for shoaling directional waves over a mild sloping beach with straight parallel isobaths.
Justin R. Davis   +3 more
doaj   +1 more source

Higher-order single-step fully discrete approximations for nonlinear second-order hyperbolic equations

open access: yesComputers & Mathematics with Applications, 1986
Error estimates are proved for finite element approximations to the solution of the initial-value problem \[ u_{tt}=\sum^{n}_{j,k=1}\partial /\partial x_ j(a_{jk}(x,t,u)\partial u/\partial x_ k)-a_ 0(t,x\quad,u)u+f(x,t,u)\quad in\quad \Omega \times [0,\tau], \] \(u=0\) in \(\partial \Omega \times [0,\tau]\), \(u(0)=u^ 0\), \(u_ t(0)=u^ 0_ t\) in ...
openaire   +2 more sources

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