Browsing by Author "Parés Mariné, Núria"
Now showing items 1-20 of 98
-
A new 3D equilibrated residual method improving accuracy and efficiency of flux-free error estimates
(John Wiley & sons, 2019-01-01)
Article
Open AccessThe paper presents a novel strategy providing fully computable upper bounds for the energy norm of the error in the context of three-dimensional linear finite element approximations of the reaction-diffusion equation. The ... -
A new equilibrated residual method improving accuracy and efficiency of flux-free error estimates
(2017-01-01)
Article
Open AccessThis paper presents a new methodology to compute guaranteed upper bounds for the energy norm of the error in the context of linear finite element approximations of the reaction–diffusion equation. The new approach revisits ... -
A posteriori goal-oriented bounds for the Poisson problem using potential and equilibrated flux reconstructions: Application to the hybridizable discontinuous Galerkin method
(2021-12-01)
Article
Open AccessWe present a general framework to compute upper and lower bounds for linear-functional outputs of the exact solutions of the Poisson equation based on reconstructions of the field variable and flux for both the primal and ... -
Accurate upper and lower error bounds by solving flux-free local problems in
(2004-12)
Article
Open AccessTwo implicit residual type estimators yielding upper bounds of the error are presented which do not require flux equilibration. One of them is based on the ideas introduced in [MAC 00, CAR 99, MOR 03, PRU 02]. The new ... -
Adaptividade e estimativas de erro orientadas por metas aplicadas a um benchmark test de propagação de onda
(2016-01-12)
Article
Open AccessO objetivo deste artigo é estudar a eficiência e a robustez de técnicas adaptativas e estimativas de erro orientadas por metas para um benchmark test. As técnicas utilizadas aqui são baseadas em um simples pós-processo das ... -
Bases concursos closques i fractals
(Universitat Politècnica de Catalunya, 2010)
Other
Open Access -
Bounds for quantities of interest and adaptivity in the element-free Galerkin method
(Wiley and Sons, 2008-07)
Article
Open AccessA novel approach to implicit residual-type error estimation in mesh-free methods and an adaptive refinement strategy are presented. This allows computing upper and lower bounds of the error in energy norm with the ultimate ... -
Bounds of functional outputs for parabolic problems. Part I: Exact bounds of the discontinuous Galerkin time discretization
(2008-03)
Article
Open AccessClassical implicit residual type error estimators require using an underlying spatial finer mesh to compute bounds for some quantity of interest. Consequently, the bounds obtained are only guaranteed asymptotically that ... -
Bounds of functional outputs for parabolic problems. Part II: Bounds of the exact solution
(2008-03)
Article
Open AccessThe paper introduces a methodology to compute upper and lower bounds for linear-functional outputs of the exact solutions of parabolic problems. In this second part, the bounds account for the error both in space and time. ... -
Computable exact bounds for linear outputs from stabilized solutions of the advection-diffusion-reaction equation
(John Wiley & Sons, 2013-02-01)
Article
Open Access -
Computing upper and lower bounds for the J-integral in two-dimensional linear elasticity
(2006-01)
Article
Open AccessWe present an a posteriori method for computing rigorous upper and lower bounds for the J-integral in two-dimensional linear elasticity. The J-integral, which is typically expressed as a contour integral, is recast as a ... -
Data classification methodology for electronic noses using uniform manifold approximation and projection and extreme learning machine
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-12-22)
Article
Open AccessThe classification and use of robust methodologies in sensor array applications of electronic noses (ENs) remain an open problem. Among the several steps used in the developed methodologies, data preprocessing improves the ... -
Derivació
(Universitat Politècnica de Catalunya, 2008)
Lecture notes
Open Access -
Derivació de funcions de variable real
(Universitat Politècnica de Catalunya, 2008)
Lecture notes
Open Access -
Derivació: el problema de la tangent
(Fundació per a la Universitat Oberta de Catalunya, 2021-09)
Part of book or chapter of book
Restricted access - publisher's policy -
Derivación: El problema de la tangente
(2021-09)
Part of book or chapter of book
Restricted access - publisher's policy -
Derivades
(Universitat Politècnica de Catalunya, 2008)
Problem statement, exercise
Open Access -
Descomposició en valors singulars: introducció i aplicacions. Anàlisi de components principals (PCA) i descomposició en valors singulars (SVD)
(Fundació per a la Universitat Oberta de Catalunya, 2019-02)
Part of book or chapter of book
Restricted access - publisher's policy -
Descomposición en valores singulares: introducción y aplicaciones. Análisis de componentes principales (PCA) y descomposición en valores singulares (SVD)
(Fundació per a la Universitat Oberta de Catalunya, 2019-02)
Part of book or chapter of book
Restricted access - publisher's policy -
Enhanced goal-oriented error assessment and computational strategies in adaptive reduced basis solver for stochastic problems
(John Wiley & Sons, 2017-05-04)
Article
Open AccessThis work focuses on providing accurate low-cost approximations of stochastic ¿nite elements simulations in the framework of linear elasticity. In a previous work, an adaptive strategy was introduced as an improved Monte-Carlo ...
