Results 1 to 10 of about 1,171,815 (343)

Two photon decay of $\pi^0$ and $\eta$ at finite temperature and density

open access: yes, 2004
A comparative study of the anomalous decays $\pi^0, \eta \to\gamma\gamma$, at finite temperature and at finite density, is performed in the framework of the three--flavor Nambu--Jona-Lasinio.
Costa P   +13 more
core   +1 more source

Solution of a two-dimensional time-dependent Schrödinger equation describing two interacting atoms in an optical trap

open access: yesDiscrete and Continuous Models and Applied Computational Science
We introduce a numerical method to solve the two-dimensional time-dependent Schrödinger equation, which characterizes a system of two atoms with a finite-range interaction potential confined within a harmonic oscillator trap.
I. S. Ishmukhamedov   +2 more
doaj   +1 more source

Numerical computation of transonic flows by finite-element and finite-difference methods [PDF]

open access: yes
Studies on applications of the finite element approach to transonic flow calculations are reported. Different discretization techniques of the differential equations and boundary conditions are compared.
Hafez, M. M.   +3 more
core   +1 more source

Image Restoration using a Nonlinear Second-order Parabolic PDE-based Scheme

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
A novel anisotropic diffusion-based image denoising and restoration approach is proposed in this paper. A variational model for image restoration is introduced first, then the corresponding Euler-Lagrange equation being determined.
Barbu Tudor, Moroşanu Costică
doaj   +1 more source

Comparison of truncation error of finite-difference and finite-volume formulations of convection terms [PDF]

open access: yes
Judging by errors in the computational-fluid-dynamics literature in recent years, it is not generally well understood that (above first-order) there are significant differences in spatial truncation error between formulations of convection involving a ...
Leonard, B. P.
core   +1 more source

On supraconvergence phenomenon for second order centered finite differences on non-uniform grids

open access: yes, 2016
In the present study we consider an example of a boundary value problem for a simple second order ordinary differential equation, which may exhibit a boundary layer phenomenon.
Dutykh, Denys, Khakimzyanov, Gayaz
core   +3 more sources

An efficient explicit group method for time fractional Burgers equation

open access: yesFrontiers in Physics
Fractional Burgers-type equations are essential mathematical models for describing the cumulative effect of wall friction through the boundary layer, along with the unidirectional propagation of weakly nonlinear acoustic waves. It is a major challenge to
Fouad Mohammad Salama
doaj   +1 more source

EL MÉTODO DE DIFERENCIAS FINITAS EN EVALUACIÓN DE OPCIONES REALES THE FINITE DIFFERENCE METHOD IN REAL OPTIONS VALUATION

open access: yesIngeniare: Revista Chilena de Ingeniería, 2008
Una respuesta a las falencias de los métodos tradicionales de evaluación de proyectos de inversión corresponde a la metodología de "Opciones Reales" que proviene del análisis de opciones sobre instrumentos financieros desarrollado en la década de los 70.
Sebastián Otero G   +2 more
doaj  

On Numerical Simulations of Variable-Order Fractional Cable Equation Arising in Neuronal Dynamics

open access: yesFractal and Fractional
In recent years, various complex systems and real-world phenomena have been shown to include memory and hereditary properties that change with respect to time, space, or other variables.
Fouad Mohammad Salama
doaj   +1 more source

Spreadsheet Implementation of Numerical and Analytical Solutions to Some Classical Partial Differential Equations

open access: yesSpreadsheets in Education, 2016
This paper presents the implementation of numerical and analytical solutions of some of the classical partial differential equations using Excel spreadsheets.
Mark A Lau
doaj  

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