Results 21 to 30 of about 2,129,625 (339)

Numerical Solution of Stochastic Hyperbolic Equations

open access: yesAbstract and Applied Analysis, 2012
A two-step difference scheme for the numerical solution of the initial-boundary value problem for stochastic hyperbolic equations is presented. The convergence estimate for the solution of the difference scheme is established.
Necmettin Aggez, Maral Ashyralyyewa
doaj   +1 more source

Efficient computation of delay differential equations with highly oscillatory terms. [PDF]

open access: yes, 2012
This paper is concerned with the asymptotic expansion and numerical solution of systems of linear delay differential equations with highly oscillatory forcing terms.
Condon, Marissa   +3 more
core   +1 more source

Optimization of two-stage methanogenesis regime based on the Pontryagin’s maximum principle ***

open access: yesAdvanced Engineering Research, 2019
Introduction. The solution to the problem of optimal control of the biogas process under its conversion in two digesters is considered. The work objectives are to propose a mathematical model of this process and to develop an optimal control algorithm ...
S. A. Korolev, D. V. Maykov
doaj   +1 more source

SU(3) sphaleron: Numerical solution

open access: yes, 2017
We complete the construction of the sphaleron $\widehat{S}$ in $SU(3)$ Yang-Mills-Higgs theory with a single Higgs triplet by solving the reduced field equations numerically.
Klinkhamer, F. R., Nagel, P.
core   +1 more source

A discontinuous Galerkin moving mesh method for Hamilton-Jacobi equations [PDF]

open access: yes, 2007
In this paper we consider the numerical solution of first-order Hamilton-Jacobi equations using the combination of a discontinuous Galerkin finite element method and an adaptive $r$-refinement (mesh movement) strategy.
MacKenzie, John, Nicola, Aurelian
core   +1 more source

Integral equation for numerical solution of stationary quantum-mechanical problems

open access: yesAdvanced Engineering Research, 2016
The work objective is to describe the numerical solution method for the stationary Schrödinger equation based on the application of the integral equation identical to the Schrödinger equation.
Sergey Yu. Knyazev
doaj   +1 more source

Study of the Moisture Absorption in Polymer Composites Reinforced with Vegetal Fiber Using Langmuir’s Model [PDF]

open access: yesMaterials Research, 2019
This work aims to numerically study the moisture absorption in polymer composites reinforced with vegetal fiber, using the diffusive model of Langmuir, which considers the existence of water molecules inside the material free to diffuse and adsorb at the
Wanessa Raphaella Gomes dos Santos   +2 more
doaj   +1 more source

New Cubic B-Spline Approximation for Solving Linear Two-Point Boundary-Value Problems

open access: yesMathematics, 2021
In this study, we introduce a new cubic B-spline (CBS) approximation method to solve linear two-point boundary value problems (BVPs). This method is based on cubic B-spline basis functions with a new approximation for the second-order derivative.
Busyra Latif   +2 more
doaj   +1 more source

ADI splitting schemes for a fourth-order nonlinear partial differential equation from image processing [PDF]

open access: yes, 2013
We present directional operator splitting schemes for the numerical solution of a fourth-order, nonlinear partial differential evolution equation which arises in image processing. This equation constitutes the H−1-gradient flow of the total variation and
A. Chambolle   +57 more
core   +3 more sources

An Evaluation of the Design Parameters of a Variable Bearing Profile Considering Journal Perturbation in Rotor–Bearing Systems

open access: yesDesigns, 2023
A variety of bearing profile designs can be used to improve the performance of a rotor–bearing system in severe conditions, such as operating with a shaft misalignment.
Adawiya Ali Hamzah   +5 more
doaj   +1 more source

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