Results 1 to 10 of about 383,116 (283)
Finite Difference Schemes for MCM and AMSS [PDF]
Image Processing On Line, 2011 This article refers to algorithms based on finite difference schemes for computing mean and affine curvature evolutions of digital images, introduced by Alvarez and Morel [L. Alvarez, J.M. Morel, “Formalization and computational aspects of image analysis”
Marco Mondelli, Adina Ciomaga
doaj +2 more sources
On nonstandard finite difference schemes in biosciences [PDF]
AIP Conference Proceedings, 2012 We design, analyze and implement nonstandard finite difference (NSFD) schemes for some differential models in biosciences. The NSFD schemes are reliable in three directions. They are topologically dynamically consistent for onedimensional models. They can replicate the global asymptotic stability of the disease-free equilibrium of the MSEIR model in ...
Anguelov, Roumen +2 more
openaire +4 more sources
Journal of Applied Mathematics, 2014 We present finite difference schemes for Burgers equation and Burgers-Fisher equation. A new version of exact finite difference scheme for Burgers equation and Burgers-Fisher equation is proposed using the solitary wave solution.
Lei Zhang, Lisha Wang, Xiaohua Ding
doaj +4 more sources
On convergence of difference schemes of high accuracy for one pseudo-parabolic Sobolev type equation [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2023 Difference schemes of the finite difference method and the finite element method of high-order accuracy in time and space are proposed and investigated for a pseudo-parabolic Sobolev type equation.
M.M. Aripov +3 more
doaj +2 more sources
Conservative finite difference schemes for dynamical systems
Discrete and Continuous Models and Applied Computational Science, 2022 The article presents the implementation of one of the approaches to the integration of dynamical systems, which preserves algebraic integrals in the original fdm for Sage system.
Yu Ying, Zhen Lu
doaj +1 more source
Generalized finite-difference schemes [PDF]
Mathematics of Computation, 1969 Finite-difference schemes for initial boundary-value problems for partial differential equations lead to systems of equations which must be solved at each time step. Other methods also lead to systems of equations. We call a method a generalized finite-difference scheme if the matrix of coefficients of the system is sparse.
Swartz, B., Wendroff, B.
openaire +1 more source
Nonstandard Finite Difference Schemes for an SIR Epidemic Model
Mathematics, 2021 This paper aims to present two nonstandard finite difference (NFSD) methods to solve an SIR epidemic model. The proposed methods have important properties such as positivity and boundedness and they also preserve conservation law.
Mohammad Mehdizadeh Khalsaraei +3 more
doaj +1 more source
Finite difference schemes with monotone operators
Advances in Difference Equations, 2004 Several existence theorems are given for some second-order difference equations associated with maximal monotone operators in Hilbert spaces. Boundary conditions of monotone type are attached.
N. C. Apreutesei
doaj +2 more sources
A Mixed Finite Differences Scheme for Gradient Approximation [PDF]
Journal of Optimization Theory and Applications, 2022 AbstractIn this paper, we focus on the linear functionals defining an approximate version of the gradient of a function. These functionals are often used when dealing with optimization problems where the computation of the gradient of the objective function is costly or the objective function values are affected by some noise.
Marco Boresta +3 more
openaire +2 more sources
Recursive finite-difference Lattice Boltzmann schemes [PDF]
Computers & Mathematics with Applications, 2021 The motivation of this study is twofold. First, a recursive mathematical formulation of the discrete-velocity Boltzmann equation (DVBE) under the Bhatnagar-Gross-Krook (BGK) approximation is introduced. This formulation allows us to formally express the solution of the DVBE as an infinite sum over successive particle derivatives of the distributions ...
Lucien Vienne, Emmanuel Lévêque
openaire +2 more sources