Now showing items 1-20 of 66

  • A direct elimination algorithm for quasi-static and dynamic contact problems 

    Capua, Daniel di; Agelet de Saracibar Bosch, Carlos (2015-01-01)
    Article
    Open Access
    This paper deals with the computational modeling and numerical simulation of contact problems at Unite deformations using the Finite element method. Quasi-static and dynamic problems are considered and two particular ...
  • A filtered kinetic energy preserving finite volumes scheme for compressible flows 

    Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2012)
    Conference report
    Open Access
    The Kinetic Energy Preserving Scheme (KEP) for compressible flows has been shown to solve 1-D shock waves without smearing them. The method does not add numerical diffusion to solutions but, as a counterpart, it needs ...
  • A new approach to the planetary N-Body Problem 

    Chierchia, Luigi (2012-03-26)
    Audiovisual
    Open Access
  • A new approach to the planetary N-Body Problem 

    Chierchia, Luigi (2012-03-27)
    Audiovisual
    Open Access
  • A new phylogenetic reconstruction method based on invariants 

    Casanellas Rius, Marta; Fernández Sánchez, Jesús (2005)
    Article
    Open Access
    An attempt to use phylogenetic invariants for tree reconstruction was made at the end of the 80s and the beginning of the 90s by several authors (the initial idea due to Lake [Lake, 1987] and Cavender and Felsenstein [Cavender ...
  • Advances in dynamics, control, monitoring and applications: proceedings on the workshop on control, dynamics, monitoring and applications 

    Pozo Montero, Francesc; Zapateiro, Mauricio (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III (MA3), 2011-02)
    Book
    Restricted access - publisher's policy
  • Anàlisi del comportament de la dinàmica no lineal del ritme cardíac 

    Jové Sabaté, Jordi (Universitat Politècnica de Catalunya, 2005-06-22)
    Master thesis (pre-Bologna period)
    Open Access
    L’anàlisi de la variabilitat del ritme cardíac (VRC) o Heart Rate Variability (HRV) proporciona informació important sobre el funcionament del sistema cardiovascular. L’objectiu d’aquest treball és millorar el coneixement ...
  • Anàlisi del comportament dinàmic d'un aerogenerador flotant offshore 

    Perelló Noceras, Joan Antoni (Universitat Politècnica de Catalunya, 2012-06-29)
    Minor thesis
    Open Access
    [ANGLÈS] The overall trend of the wind energy industry to the off shore sector requires the study of new technologies for exploiting these renewable energy sources. The installation of wind farms in deeper water to improve ...
  • Application of the forces' method in dynamic systems 

    Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2007-10-11)
    Article
    Open Access
    We present here some applications of the Forces's method in dynamic systems. In particular, we consider the problem of the approximation of the trajectories of a conservative system of point masses by means of the minimization ...
  • Big-bang bifurcations in a first order system with a relay 

    Fossas Colet, Enric; Granados, Albert (2011)
    Conference report
    Restricted access - publisher's policy
    In this work we describe the bifurcation scenario found in a general first order system when a relay based proportional control is considered. We show the existence of a big bang bifurcation causing the existence of an ...
  • Cálculo de probabilidades en el análisis de perfiles genéticos compatibles 

    Sánchez García, Miguel; Cuesta Alvaro, Pedro (Institut d'estadística de Catalunya, 2000)
    Article
    Open Access
  • Central configurations of the planar coorbital satellite problem 

    Cors Iglesias, Josep Maria; Llibre Saló, Jaume; Ollé Torner, Mercè (2003)
    Article
    Open Access
    We study the planar central configurations of the 1 + n body problem where one mass is large and the other n masses are infinitesimal and equal. We find analytically all these central configurations when 2 ≤ n ≤ 4. Numerically, ...
  • Conservació de l'estructura PHS en reduccions d'ordre per truncament equilibrat 

    Ras Sabido, Antoni (2008-01-16)
    External research report
    Open Access
  • Contrôle du comportement routier d'un véhicule innovant 

    Oliver Serna, Clara (Universitat Politècnica de CatalunyaÉcole Centrale Lyon, 2011)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    En accord avec la démarche de conception d'un produit dite méthode du « cycle en V », tout produit à concevoir doit être dans un premier temps analysé en fonction de sa fonctionnalité future (analyse fonctionnelle), puis ...
  • DAE Methods in Constrained Robotic System Simulation: 

    Costa Castelló, Ramon; Griñó Cubero, Robert; Basañez Villaluenga, Luis (Centro de Investigación en Computación, 1998-03)
    Article
    Open Access
    In this paper a DAE formulation is used to model the behaviour of constrained robotic systems. This formulation allows to specify in an easy and clear way the constrained behaviour of a robotic system. In order to better ...
  • Les Danses dels N cossos 

    Simó, Carles (2013-10-02)
    Audiovisual
    Open Access
    El problema gravitatori de N cossos només admet solucions explícites en el cas N=2 i en alguns cassos molt simètrics si N>2. Una d'aquestes solucions per a N=3 fou descoberta per Lagrange (Torino 1736 - Paris 1813) l'any ...
  • Dinámica de la partícula 

    Lupón Bas, Núria (2008-12-01)
    Audiovisual
    Open Access
  • Discerning electricity consumption patterns from urban allometric scaling 

    Horta Bernús, Ricard; Rosas Casals, Martí; Valverde Castillo, Sergi (IEEE Computer Society Publications, 2010-02-22)
    Conference lecture
    Open Access
    Allometric scaling relations are characteristic of all living organisms. Metabolic and heart rates, lifespan and many other physiological properties vary with body mass in systematic and interrelated ways, which usually ...
  • Discrete nonholonomic LL systems on Lie groups 

    Fedorov, Yuri; Zenkov, Dmitry (2003)
    Article
    Open Access
    This paper applies the recently developed theory of discrete nonholonomic mechanics to the study of discrete nonholonomic left-invariant dynamics on Lie groups. The theory is illustrated with the discrete versions of two ...
  • Domain growth in binary mixtures at low temperatures 

    Lacasta Palacio, Ana María; Hernández Machado, Aurora; Sancho, Jose Maria; Toral Garcés, Raúl (The American Physical Society, 1992-03-01)
    Article
    Open Access
    We have studied domain growth during spinodal decomposition at low temperatures. We have performed a numerical integration of the deterministic time-dependent Ginzburg-Landau equation with a variable, concentration-dependent ...