Browsing by Author "Parés Mariné, Núria"
Now showing items 1-20 of 98
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A new 3D equilibrated residual method improving accuracy and efficiency of flux-free error estimates
Parés Mariné, Núria; Díez, Pedro (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
Parés Mariné, Núria; Díez, Pedro (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
Parés Mariné, Núria; Nguyen, Ngoc-Cuong; Díez, Pedro; Peraire Guitart, Jaume (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
Díez, Pedro; Parés Mariné, Núria; Huerta, Antonio (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
Steffens, Lindaura; Díez, Pedro; Parés Mariné, Núria; Alves, Marcelo Krajnc (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
Pozo Montero, Francesc; Parés Mariné, Núria; Vidal Seguí, Yolanda (Universitat Politècnica de Catalunya, 2010)
Other
Open Access -
Bounds for quantities of interest and adaptivity in the element-free Galerkin method
Vidal Seguí, Yolanda; Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (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
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (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
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (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
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (John Wiley & Sons, 2013-02-01)
Article
Open Access -
Computing upper and lower bounds for the J-integral in two-dimensional linear elasticity
Xuan, Z C; Parés Mariné, Núria; Peraire Guitart, Jaume (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
León Medina, Jersson Xavier; Parés Mariné, Núria; Anaya Vejar, Maribel; Tibaduiza Burgos, Diego Alexander; Pozo Montero, Francesc (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
Parés Mariné, Núria; Pozo Montero, Francesc; Vidal Seguí, Yolanda (Universitat Politècnica de Catalunya, 2008)
Lecture notes
Open Access -
Derivació de funcions de variable real
Parés Mariné, Núria; Pozo Montero, Francesc; Vidal Seguí, Yolanda (Universitat Politècnica de Catalunya, 2008)
Lecture notes
Open Access -
Derivació: el problema de la tangent
Pozo Montero, Francesc; Ripoll Missé, Jordi; Parés Mariné, Núria (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
Pozo Montero, Francesc; Ripoll Missé, Jordi; Parés Mariné, Núria (2021-09)
Part of book or chapter of book
Restricted access - publisher's policy -
Derivades
Parés Mariné, Núria; Pozo Montero, Francesc; Vidal Seguí, Yolanda (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)
Pozo Montero, Francesc; Parés Mariné, Núria (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)
Pozo Montero, Francesc; Parés Mariné, Núria (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
Serafin, Kevin; Magnain, Benoît; Florentin, Eric; Parés Mariné, Núria; Díez, Pedro (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 ...