Results 51 to 60 of about 497,613 (208)

A posteriori error estimates for fourth order hyperbolic control problems by mixed finite element methods

open access: yesBoundary Value Problems, 2019
In this paper, we consider the a posteriori error estimates of the mixed finite element method for the optimal control problems governed by fourth order hyperbolic equations.
Chunjuan Hou, Zhanwei Guo, Lianhong Guo
doaj   +1 more source

O ativismo judicial e constrangimentos a posteriori

open access: yesRevista de Investigações Constitucionais, 2018
O presente artigo se propõe a analisar o ativismo judicial, expressão de significado impreciso e fugidio no nosso Direito. Após estabelecer algumas premissas para a definição teórica do ativismo judicial, passa a analisar, ainda no campo teórico, que o ...
Luiz Henrique Diniz Araújo
doaj   +1 more source

Space-time adaptive finite elements for nonlocal parabolic variational inequalities [PDF]

open access: yes, 2019
This article considers the error analysis of finite element discretizations and adaptive mesh refinement procedures for nonlocal dynamic contact and friction, both in the domain and on the boundary. For a large class of parabolic variational inequalities
Gimperlein, Heiko, Stocek, Jakub
core   +2 more sources

A simple robust and accurate a posteriori sub-cell finite volume limiter for the discontinuous Galerkin method on unstructured meshes

open access: yesJournal of Computational Physics, 2016
In this paper we propose a simple, robust and accurate nonlinear a posteriori stabilization of the Discontinuous Galerkin (DG) finite element method for the solution of nonlinear hyperbolic PDE systems on unstructured triangular and tetrahedral meshes in
M. Dumbser, R. Loubère
semanticscholar   +1 more source

A posteriori error control for discontinuous Galerkin methods for parabolic problems

open access: yes, 2010
We derive energy-norm a posteriori error bounds for an Euler time-stepping method combined with various spatial discontinuous Galerkin schemes for linear parabolic problems.
Emmanuil H. Georgoulis   +4 more
core   +1 more source

An a posteriori error analysis of a mixed finite element Galerkin approximation to second order linear parabolic problems [PDF]

open access: yes, 2010
In this article, a posteriori error estimates are derived for a mixed finite element Galerkin approximation to second order linear parabolic initial and boundary value problems. Using mixed elliptic reconstruction method, a posteriori error estimates in $
Memon, S., Nataraj, N., Pani, A. K.
core  

Rigorous a-posteriori analysis using numerical eigenvalue bounds in a surface growth model

open access: yes, 2017
In order to prove numerically the global existence and uniqueness of smooth solutions of a fourth order, nonlinear PDE, we derive rigorous a-posteriori upper bounds on the supremum of the numerical range of the linearized operator. These bounds also have
Blömker, Dirk, Nolde, Christian
core   +1 more source

Dietary Patterns Defined a Posteriori or a Priori in Relation to Obesity Indices in Iranian Women [PDF]

open access: yesInternational Journal of Nutrition Sciences, 2017
Background: Obesity is a multifactorial chronic disease that develops from multiple interactions between genetic, physiologic, metabolic, socio-economic, and lifestyle factors.
Rahebeh Shaker-Hosseini   +1 more
doaj   +2 more sources

A Type of Multigrid Method Based on the Fixed-Shift Inverse Iteration for the Steklov Eigenvalue Problem

open access: yesAdvances in Mathematical Physics, 2016
For the Steklov eigenvalue problem, we establish a type of multigrid discretizations based on the fixed-shift inverse iteration and study in depth its a priori/a posteriori error estimates.
Feiyan Li, Hai Bi
doaj   +1 more source

Reliable a-posteriori error estimators for $hp$-adaptive finite element approximations of eigenvalue/eigenvector problems [PDF]

open access: yes, 2011
We present reliable a-posteriori error estimates for $hp$-adaptive finite element approximations of eigenvalue/eigenvector problems. Starting from our earlier work on $h$ adaptive finite element approximations we show a way to obtain reliable and ...
Giani, Stefano   +2 more
core   +2 more sources

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