Results 41 to 50 of about 81,423 (165)

Regularization of the fractional Rayleigh–Stokes equation using a fractional Landweber method

open access: yesAdvances in Difference Equations, 2020
In this paper, we consider a time-fractional backward problem for the fractional Rayleigh–Stokes equation in a general bounded domain. We propose a fractional Landweber regularization method for solving this problem.
Nguyen Hoang Luc   +3 more
doaj   +1 more source

A New Linearized Crank-Nicolson Mixed Element Scheme for the Extended Fisher-Kolmogorov Equation

open access: yesThe Scientific World Journal, 2013
We present a new mixed finite element method for solving the extended Fisher-Kolmogorov (EFK) equation. We first decompose the EFK equation as the two second-order equations, then deal with a second-order equation employing finite element method, and ...
Jinfeng Wang   +4 more
doaj   +1 more source

A finite element method for a two-dimensional Pucci equation

open access: yesComptes Rendus. Mécanique, 2023
A nonlinear least-squares finite element method for strong solutions of the Dirichlet boundary value problem of a two-dimensional Pucci equation on convex polygonal domains is investigated in this paper.
Brenner, Susanne C.   +2 more
doaj   +1 more source

A Priori Error Estimates of Mixed Finite Element Methods for General Linear Hyperbolic Convex Optimal Control Problems

open access: yesAbstract and Applied Analysis, 2014
The aim of this work is to investigate the discretization of general linear hyperbolic convex optimal control problems by using the mixed finite element methods.
Zuliang Lu, Xiao Huang
doaj   +1 more source

A Priori Error Estimates for Approximation of Parabolic Boundary Value Problems [PDF]

open access: yesSIAM Journal on Numerical Analysis, 1975
The L2-error estimates are established for the continuous time Faedo-Galerkin approximation to solutions of a linear parabolic initial boundary value problem that has elliptic part of order 2m. Properties of analytic semigroups are used to obtain these estimates directly from the LZ-estimates for the corresponding steady state elliptic problem under ...
openaire   +2 more sources

Regional data assimilation of multi-spectral MOPITT observations of CO over North America [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Chemical transport models (CTMs) driven with high-resolution meteorological fields can better resolve small-scale processes, such as frontal lifting or deep convection, and thus improve the simulation and emission estimates of tropospheric trace gases ...
Z. Jiang   +5 more
doaj   +1 more source

Multiadaptive Galerkin Methods for ODEs III: A Priori Error Estimates [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2006
The multiadaptive continuous/discontinuous Galerkin methods mcG(q) and mdG(q) for the numerical solution of initial value problems for ordinary differential equations are based on piecewise polynomial approximation of degree q on partitions in time with time steps which may vary for different components of the computed solution. In this paper, we prove
openaire   +2 more sources

Error Evaluation in a Stereovision-Based 3D Reconstruction System

open access: yesEURASIP Journal on Image and Video Processing, 2010
The work presented in this paper deals with the performance analysis of the whole 3D reconstruction process of imaged objects, specifically of the set of geometric primitives describing their outline and extracted from a pair of images knowing their ...
Abdelkrim Belhaoua   +2 more
doaj   +2 more sources

An Adaptive Nonconforming Finite Element Algorithm for Laplace Eigenvalue Problem

open access: yesAbstract and Applied Analysis, 2014
We establish Crouzeix-Raviart element adaptive algorithm based on Rayleigh quotient iteration and give its a priori/a posteriori error estimates. Our algorithm is performed under the package of Chen, and satisfactory numerical results are obtained.
Yuanyuan Yu, Yidu Yang, Jiayu Han
doaj   +1 more source

A priori error estimates of finite volume methods for general elliptic optimal control problems

open access: yesElectronic Journal of Differential Equations, 2017
In this article, we establish a priori error estimates for the finite volume approximation of general elliptic optimal control problems. We use finite volume methods to discretize the state and adjoint equation of the optimal control problems. For the
Yuming Feng   +4 more
doaj  

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