Now showing items 1-20 of 48

    • A poro-thermoelastic problem with dissipative heat conduction 

      Bazarra, Noelia; Fernández, Jose R.; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2020-07-18)
      Article
      Open Access
      In this work, we study from the mathematical and numerical points of view a poro-thermoelastic problem. A long-term memory is assumed on the heat equation. Under some assumptions on the constitutive tensors, the resulting ...
    • A probabilistic concept of accessibility for access structures 

      Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (2008-06-13)
      External research report
      Open Access
      In this paper we introduce the concept of weighted accessibility for access structures. In some sense, it represents a measure of how difficult or how easy is to recover the secret. We give also a numerical measure of ...
    • A problem with viscoelastic mixtures: numerical analysis and computational experiments 

      Fernández, José Ramón; Masid, Maria; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2021)
      Article
      Open Access
      In this paper, we study, from the numerical point of view, a dynamic problem involving a mixture of two viscoelastic solids. The mechanical problem is written as a system of two coupled partial differential equations. Its ...
    • Accessibility measures to nodes of directed graphs using solutions for generalized cooperative games 

      Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (2012-02)
      Article
      Restricted access - publisher's policy
      The aim of this paper consists of constructing accessibility measures to the nodes of directed graphs using methods of Game Theory. Since digraphs without a predefined game are considered, the main part of the paper is ...
    • An a priori error analysis of a porous strain gradient model 

      Baldonedo, Jacobo; Fernández, José Ramón; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (Wiley-VCH, 2021-09-04)
      Article
      Restricted access - publisher's policy
      In this work, we consider, from the numerical point of view, a boundary-initial value problem for non-simple porous elastic materials. The mechanical problem is written as a coupled hyperbolic linear system in terms of ...
    • 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
      Open Access
      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 ...
    • Aplicaciones de los juegos cooperativos a la actividad empresarial 

      Amer Ramon, Rafael; Carreras Escobar, Francisco; Magaña Nieto, Antonio (2008-04)
      Article
      Open Access
      Presentamos diversas aplicaciones de los juegos cooperativos y del valor de Shapley al contexto empresarial. Entre ellas destacamos el reparto de costes o beneficios. En el texto se describe el marco axiomático propuesto ...
    • Càlcul d'una variable 

      Leseduarte Milán, María Carme; Llongueras Arola, Maria Dolors; Magaña Nieto, Antonio (Edicions UPC, 2009)
      Book
      Restricted access to UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UIC users
      Uns bons fonaments són la base per assolir els coneixements necessaris per esdevenir un bon professional. La col·lecció Temes Clau hi vol contribuir oferint uns materials de conceptes bàsics de les matèries inicials ...
    • Càlcul I : teoria i exercicis 

      Leseduarte Milán, María Carme; Llongueras Arola, Maria Dolors; Magaña Nieto, Antonio (Iniciativa Digital Politècnica, 2011)
      Book
      Open Access
      Per cursar qualsevol carrera d'enginyeria, és necessari tenir uns bons fonaments en les disciplines científiques bàsiques, com ara el càlcul. Aquest llibre pretén posar a l'abast dels estudiants un resum complet de la ...
    • CÀLCUL II (Examen 1r Quadr.) 

      Magaña Nieto, Antonio (Universitat Politècnica de Catalunya, 2005-01-20)
      Exam
      Restricted access to the UPC academic community
    • CÀLCUL II (Examen 1r Quadr.) 

      Magaña Nieto, Antonio (Universitat Politècnica de Catalunya, 2003-11-04)
      Exam
      Restricted access to the UPC academic community
    • CÀLCUL II (Examen 1r Quadr.) 

      Magaña Nieto, Antonio (Universitat Politècnica de Catalunya, 2004-01-20)
      Exam
      Restricted access to the UPC academic community
    • CÀLCUL II (Examen 1r Quadr.) 

      Magaña Nieto, Antonio (Universitat Politècnica de Catalunya, 2008-01-17)
      Exam
      Restricted access to the UPC academic community
    • CÀLCUL II (Examen 2n Quadr.) 

      Magaña Nieto, Antonio (Universitat Politècnica de Catalunya, 2005-06-06)
      Exam
      Restricted access to the UPC academic community
    • CÀLCUL II (Examen 2n Quadr.) 

      Magaña Nieto, Antonio (Universitat Politècnica de Catalunya, 2004-04-02)
      Exam
      Restricted access to the UPC academic community
    • Coalition formation and stability 

      Magaña Nieto, Antonio; Carreras Escobar, Francisco (2018-06)
      Article
      Open Access
      This paper aims to develop, for any cooperative game, a solution notion that enjoys stability and consists of a coalition structure and an associated payoff vector derived from the Shapley value. To this end, two concepts ...
    • Consorcios y valor de Shapley 

      Llongueras Arola, Maria Dolors; Magaña Nieto, Antonio (2010)
      Conference report
      Open Access
      La coordindación de estrategias en un juego cooperativo, cuando un grupo de jugadores decide actuar en conjunto es la base de la noción de consorcio. Un consorcio en un juego cooperativo es una coalición que posee una ...
    • Decay of quasi-static porous-thermo-elastic waves 

      Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2021-06)
      Article
      Restricted access - publisher's policy
      We study the behavior in time of the solutions to several systems of equations for porous-thermo-elastic problems when one of the variables is considered to be quasi-static or, in other words, whose second time derivative ...
    • Dimension, egalitarianism and decisiveness of European voting systems 

      Carreras Escobar, Francisco; Freixas Bosch, Josep; Magaña Nieto, Antonio (2016)
      Article
      Open Access
      An analysis of three major aspects has been carried out that may apply to any of the successive voting systems used for the European Union Council of Ministers, from the first one established in the Treaty of Rome in 1958 ...
    • Equacions diferencials : problemes resolts 

      Leseduarte Milán, María Carme; Llongueras Arola, Maria Dolors; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (Iniciativa Digital Politècnica, 2012)
      Book
      Open Access
      La resolució de problemes és una metodologia activa d'aprenentatge que estimula l'adquisició de coneixements i, alhora, ajuda a desenvolupar competències. Al món de l'enginyeria es fan servir models matemàtics on apareixen ...