Now showing items 1-20 of 95

  • A boundary control technique to the string-tip-mass system based on a non-symmetric peak-detector model 

    Acho Zuppa, Leonardo; Pujol Vázquez, Gisela (2017)
    Conference report
    Restricted access - publisher's policy
    This paper presents a vibration control design to the string-tip-mass system by using a non-symmetric peakdetector mechanism. Previously, this peak-detector system was used as an easy algorithm to mitigate vibration on ...
  • A comparison of refinement indicators for h-adaptive discontinuous Galerkin methods for the Euler and Navier-Stokes equations 

    Matas Salvá, Antonio (Universitat Politècnica de Catalunya, 2018-09-17)
    Master thesis
    Restricted access - confidentiality agreement
  • A discontinuous galerkin formulation for solid dynamics 

    Peraire Guitart, Jaume; Bonet Carbonell, Javier; Huerta, Antonio; Persson, Per Olof; Vidal Seguí, Yolanda (Omnipress, 2006)
    Lecture
    Open Access
  • Adjoint-based PDE-constrained optimization using HPC techniques 

    Peredo Andrade, Oscar Francisco (Universitat Politècnica de Catalunya, 2013-10-02)
    Master thesis
    Open Access
    This work focuses in the utilization of current HPC technologies to explore mathematical optimization algorithms in which a PDE acts as main constraint. A development framework is proposed, together with a novel application ...
  • A generalization of the Allen–Cahn equation 

    Miranville, Alain; Quintanilla de Latorre, Ramón (2015-04-01)
    Article
    Open Access
    Our aim in this paper is to study generalizations of the Allen–Cahn equation based on a modification of the Ginzburg–Landau free energy proposed in S. Torabi et al. (2009, A new phase-field model for strongly anisotropic ...
  • A gradient estimate for nonlocal minimal graphs 

    Cabré Vilagut, Xavier; Cozzi, Matteo (2019-04-01)
    Article
    Restricted access - publisher's policy
    We consider the class of measurable functions defined in all of Rn that give rise to a nonlocal minimal graph over a ball of Rn. We establish that the gradient of any such function is bounded in the interior of the ball ...
  • A hybridizable discontinuous Galerkin phase-field model for brittle fracture 

    Muixí Ballonga, Alba; Fernández Méndez, Sonia; Rodríguez Ferran, Antonio (2019-05-01)
    Article
    Open Access
    Phase-field models for brittle fracture consider smeared representations of cracks, which are described by a continuous field that varies abruptly in the transition zone between unbroken and broken states. Computationally, ...
  • A Liouville type result for fractional Schrödinger operators in 1D 

    Felipe Navarro, Juan Carlos (Universitat Politècnica de Catalunya, 2017-01)
    Master thesis
    Open Access
    The aim of this master's thesis is to obtain an alternative and original proof of a Liouville type result for fractional Schrödinger operators in 1D without using a local extension problem, in the spirit of the recent work ...
  • Analysis for the strain gradient theory of porous thermoelasticity 

    Fernández, José Ramón; Magaña Nieto, Antonio; Masid, Maria; Quintanilla de Latorre, Ramón (2019-01-01)
    Article
    Restricted access - publisher's policy
    In this paper, we analyse a model involving a strain gradient thermoelastic rod with voids. Existence and uniqueness, as well as an energy decay property, are proved by means of the semigroup arguments. The variational ...
  • Analytical solution of the electromagnetic field of a current carrying conductor in multi-layer media 

    Esteban De La Iglesia, Pablo (Universitat Politècnica de Catalunya, 2018-05)
    Bachelor thesis
    Open Access
    Se trata de hallar el campo magnético producido por un hilo infinitesimal de corriente cuando hay placas, paralelas entre ellas, de distintos materiales. Para ello con las ecuaciones de Maxwell se obtiene una EDP que se ...
  • Analyticity in porous-thermoelasticity with microtemperatures 

    Pamplona, Paulo Xavier; Muñoz Rivera, Jaime E.; Quintanilla de Latorre, Ramón (2012-10-15)
    Article
    Restricted access - publisher's policy
    In this note we study the analyticity of the solutions to the one-dimensional porouselasticity problem with temperatures and microtemperatures when viscoelasticity and porous viscosity effects are also present. We show ...
  • A Note on the Dynamics of Piecewise-Autonomous Bistable Parabolic Equations 

    Fiedler, Bernold; Rocha, Carlos; Salazar, Domingo; Solà-Morales Rubió, Joan de (2000)
    Article
    Open Access
  • Antisymmetry of solutions for some weighted elliptic problems 

    Cabré Vilagut, Xavier; Lucia, Marcello; Sanchón, Manel; Villegas, Salvador (2018-03-17)
    Article
    Open Access
    This article concerns the antisymmetry, uniqueness, and monotonicity properties of solutions to some elliptic functionals involving weights and a double well potential. In the one-dimensional case, we introduce the continuous ...
  • A Parameterized multi-step Newton method for solving systems of nonlinear equations 

    Ahmad, Fayyaz; Tohidi, Emran; Carrasco, Juan A. (2016-03-01)
    Article
    Open Access
    We construct a novel multi-step iterative method for solving systems of nonlinear equations by introducing a parameter. to generalize the multi-step Newton method while keeping its order of convergence and computational ...
  • A PDE approach of inflammatory phase dynamics in diabetic wounds. 

    Consul Porras, M. Nieves; Oliva, Sergio M.; Pellicer, Marta (2014)
    Article
    Open Access
    The objective of the present paper is the modeling and analysis of the dynamics of macrophages and certain growth factors in the in ammatory phase, the rst one of the wound healing process. It is the phase where there ...
  • A Perturbation argument for a Monge–Ampère type equation arising in optimal transportation 

    Caffarelli, Luis; González Nogueras, María del Mar; Nguyen, Truyen (2014-05-01)
    Article
    Restricted access - publisher's policy
    We prove some interior regularity results for potential functions of optimal transportation problems with power costs. The main point is that our problem is equivalent to a new optimal transportation problem whose cost ...
  • Application of the Narrow Escape Problem to Ion Channels 

    Riba Monzó, Martí (Universitat Politècnica de Catalunya, 2012-11)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    En els darrers anys, un dels camps cient´ıfico-t`ecnics que m´es s’ha desenvolupat ´es el de la bioenginyeria. En particular, les matem`atiques aplicades a la biologia han proporcionat resultats destacables, mitjan¸cant ...
  • A result on class-C1 linearization of contractions in infinite dimensions 

    Munhoz Rodrigues, Hildebrando; Solà-Morales Rubió, Joan de (2002)
    Article
    Open Access
  • Automatically imposing incremental boundary displacements for valid mesh morphing and curving 

    Ruiz Gironès, Eloi; Gargallo Peiró, Abel; Sarrate Ramos, Josep; Roca, Xevi (2019-07)
    Article
    Open Access
    We present a new incremental mesh morphing method obtained by proposing and discretizing a solution procedure for the continuous morphing problem. Our method seeks a diffeomorphism that transforms an initial domain to a ...
  • Black-Scholes differential equation and its development 

    Duaso Bellido, Mireia (Universitat Politècnica de Catalunya, 2015-07)
    Bachelor thesis
    Restricted access - author's decision
    L'equació de Black-Scholes és una equació en derivades parcials (EDP) de tipus difusió. Aquest model introdueix que els increments de l'actiu subjacent segueixen un moviment Brownià. És un mètode eficient per calcular el ...