Now showing items 1-18 of 18

    • A consistent approximation of the total perimeter functional for topology optimization algorithms 

      Amstutz, Samuel; Dapogny, Charles; Ferrer Ferré, Àlex (2022-02-24)
      Article
      Open Access
      This article revolves around the total perimeter functional, one particular version of the perimeter of a shape O contained in a fixed computational domain D measuring the total area of its boundary ¿O, as opposed to its ...
    • A heuristic method for a congested capacitated transit assignment model with strategies 

      Codina Sancho, Esteve; Rosell Camps, Francisca (2017-12)
      Article
      Open Access
      This paper addresses the problem of solving the congested transit assignment problem with strict capacities. The model under consideration is the extension made by Cominetti and Correa (2001), for which the only solution ...
    • Anàlisi de resultats: Ninja Trader vs Visual Chart 

      Caminal Bobet, Aleix (Universitat Politècnica de Catalunya, 2013-09)
      Master thesis (pre-Bologna period)
      Open Access
      En aquest projecte, es fa una anàlisi entre 2 programes de Trading que són el Ninja Trader i el Visual Chart, a partir d'un històric del Ibex-35 des de l'1 de gener de 2008 (obtingut amb Visual Chart). S'apliquen 4 sistemes ...
    • Computational cost of the Fekete problem 

      Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2007-10-11)
      Article
      Open Access
      We present here strong numerical and statistical evidence of the fact that the Smale's 7th problem can be answered affirmatively. In particular, we show that a local minimum for the logarithmic potential energy in the ...
    • Controllability of second order linear systems 

      Clotet Juan, Josep; García Planas, María Isabel (2003)
      Article
      Open Access
      Let (A1;A2;B) be a triple of matrices representing two-order time-invariant linear systems, ¨x = A1 ˙ x+A2x+Bu. Using linearization process we study the controllability of second order linear systems. We obtain su±cient ...
    • Hamilton-Jacobi theory and the evolution operator 

      Cariñena Marzo, José Fernando; Gràcia Sabaté, Francesc Xavier; Martínez Fernández, Eduardo; Marmo, Giuseppe; Muñoz Lecanda, Miguel Carlos; Román Roy, Narciso (Universidad de Zaragoza, Prensas Universitarias de Zaragoza, 2009)
      Part of book or chapter of book
      Open Access
      We present a new setting of the geometric Hamilton-Jacobi theory by using the so-called time-evolution operator K. This new approach unifies both the Lagrangian and the Hamiltonian formulation of the problem developed in ...
    • Minimización global de un polinomio en la recta real 

      Beltrán Royo, César (Institut d'Estadística de Catalunya, 1999)
      Article
      Open Access
      En este art´ıculo presentamos y probamos num´ericamente un nuevo algoritmo para la minimizaci´on global de un polinomio de grado par. El algoritmo est´a basado en la simple idea de trasladar verticalmente el grafo ...
    • Optimisation problems with ODE constraints 

      Miramunt Mases, Martí (Universitat Politècnica de Catalunya, 2022-01)
      Bachelor thesis
      Open Access
      Finding solution methods to optimisation problems has been an area of interest in mathematics for centuries. In this project, we aim to find the solution of an optimisation problem subject to an ODE using different numerical ...
    • Optimisation problems with ODE/PDE constraints 

      Armengou Riera, Neus (Universitat Politècnica de Catalunya, 2022-07)
      Bachelor thesis
      Open Access
      Optimisation problems are used to find the best solution from all the possible ones, usually with some constraints. If this constraints are related with physics, it is very common to use differential equations to describe ...
    • Principios variacionales de orden superior y con funciones de varias variables 

      Páez Sánchez, Jordi (Universitat Politècnica de Catalunya, 2014-07)
      Bachelor thesis
      Open Access
      En esta memoria se trata de extender el principio variacional unidimensional de primer orden de Hamilton a los siguientes casos: principio variacional de orden superior con funciones de una variable, principio variacional ...
    • Principis variacionals en Relativitat General: lagrangianes de Hilbert i de Palatini 

      Gabarró Solanas, Marta (Universitat Politècnica de Catalunya, 2021-01)
      Bachelor thesis
      Open Access
      La teoria de la Relativitat General és una teoria geomètrica de la gravetat que generalitza la teoria de la Relativitat Especial i les lleis newtonianes de la Gravitació, presentant la gravetat com la curvatura de ...
    • Revisión crítica de la utilización del método del gradiente conjugado y extensiones en la minimización de funciones nolineales con condiciones 

      Escudero, L. F. (Universitat Politècnica de Barcelona. Centre de Càlcul, 1984-12)
      Article
      Open Access
      En este trabajo se efectúa una revisión de la aplicación del método del gradiente conjugado (diseñado para resolver sistemas de ecuaciones lineales) a la optimización de funciones no lineales (no cuadráticas) en el conjunto ...
    • The MIT Bag Model as an infinite mass limit 

      Arrizabalaga, Naiara; Mas Blesa, Albert (Cellule MathDoc/CEDRAM, 2019-06-12)
      Article
      Open Access
    • Trajectory optimization techniques for closed-chain motion planning 

      Lemaitre Moreno, Edgar (Universitat Politècnica de Catalunya, 2018-01)
      Master thesis
      Restricted access - confidentiality agreement
      Covenantee:   Institut de Robòtica i Informàtica Industrial
    • Tutorial SAGE 4: Càlcul amb una variable 

      Guàrdia Rubies, Jordi (2012-04-16)
      Audiovisual
      Open Access
      En aquest tutorial s'introdueix l'alumne al càlcul de límits, derivades, primitives i integrals definides d'una funció en una variable real amb SAGE
    • Una aplicación de la teoría de Dubovickii y Miljutin a la programación semi-infinita convexa 

      López Cerdá, Marco A.; Vercher, Enriqueta (Universitat Politècnica de Barcelona. Centre de Càlcul, 1984-12)
      Article
      Open Access
      En este trabajo aplicamos la teoría de Dubovickii y Miljutin para deducir una condición necesaria de optimalidad relativa al problema de Programación Semi-Infinita convexa no diferenciable, asumiendo la cualificación de ...
    • Variational principles and symmetries on fibered multisymplectic manifolds 

      Gaset Rifà, Jordi; Prieto Martínez, Pedro Daniel; Román Roy, Narciso (2016-12-01)
      Article
      Open Access
      The standard techniques of variational calculus are geometrically stated in the ambient of fiber bundles endowed with a (pre)multi-symplectic structure. Then, for the corresponding variational equations, conserved quantities ...
    • Vertex-transitive graphs that remain connected after failure of a vertex an its neighbors 

      Hamidoune, Yahya Ould; Lladó Sánchez, Ana M.; López Masip, Susana Clara (Wiley InterScience, 2010)
      Article
      Restricted access - publisher's policy
      A d-regular graph is said to be superconnected if any disconnecting subset with cardinality at most d is formed by the neighbors of some vertex. A superconnected graph that remains connected after the failure of a vertex ...