Now showing items 1-9 of 9

    • Application of reverse engineering concepts to compressed air tank 

      Gilles, Guedia Guemo (Universitat Politècnica de Catalunya, 2010-06)
      Master thesis
      Restricted access - author's decision
      This study, application of reverse engineering concepts to a compressed air tank, leads us to calculate tank shell in static and fatigue, by using of formulas and software. Furthermore, unsatisfying results from basics ...
    • Dirichlet-to-Robin matrix on networks 

      Arauz Lombardía, Cristina; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2014)
      Article
      Open Access
      In this work, we de ne the Dirichlet{to{Robin matrix associated with a Schr odinger type matrix on general networks, and we prove that it satis es the alternating property which is essential to characterize those matrices ...
    • On the asymptotic wavenumber of spiral waves in lambda - omega systems 

      Aguareles Carrero, María; Baldomá Barraca, Inmaculada; Martínez-Seara Alonso, M. Teresa (2016-01-01)
      Article
      Open Access
      In this paper we consider spiral wave solutions of a general class of $\lambda -\omega $ systems with a small twist parameter q and we prove that the asymptotic wavenumber of the spirals is a ${{\mathcal{C}}^{\infty}}$ ...
    • Recovering the conductances on grids 

      Arauz Lombardía, Cristina; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2014)
      Article
      Restricted access - publisher's policy
      In this work, we present an algorithm to the recovery of the conductance of a 2– dimensional grid. The algorithm is based in the solution of some overdetermined partial boundary value problems defined on the grid.
    • Recovering the conductances on grids: A theoretical justification 

      Arauz Lombardía, Cristina; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2016)
      Article
      Open Access
      In this work, we present an overview of the work developed by the authors in the context of inverse problems on nite networks. This study performs an extension of the pioneer studies by E.B. Curtis and J.A. Morrow, ...
    • Redes estrella con la M-propiedad 

      Encinas Bachiller, Andrés Marcos (Editorial Universidad de Almería, 2015)
      Conference report
      Open Access
      En este trabajo hacemos una aportación al problema inverso de M –matrices irreducibles, simétricas y singulares, que consiste en determinar c uándo su inversa de grupo es también una M –matriz. Mostramos primero que las ...
    • Reflector design from radiance distributions 

      Patow, Gustavo Ariel; Pueyo Sandez, Francesc Xavier; Vinacua Pla, Álvaro (Institute for Applied Mathematics and Information Technology, 2004-12)
      Article
      Restricted access - publisher's policy
      This paper proposes a technique for the design of reflector shapes from prescribed optical properties (far field radiance distribution) and geometrical constraints, which is of high importance in the field of Lighting ...
    • Some inverse problems 

      Christopher, Colin; Llibre Saló, Jaume; Pantazi, Chara; Walcher, Sebastian (2011-07-06)
      Research report
      Restricted access - publisher's policy
      The Darboux theory of integrability for planar polynomial di®erential equations is a classical ¯eld, with connections to Lie symmetries, di®erential algebra and other areas of mathematics. In the present paper we introduce ...
    • Topology of Cayley graphs applied to inverse additive problems 

      Hamidoune, Yahya Ould (Iniciativa Digital Politècnica, 2011)
      Conference report
      Open Access
      We present the basic isopermetric structure theory, obtaining some new simplified proofs. Let 1 ≤ r ≤ k be integers. As an application, we obtain simple descriptions for the subsets S of an abelian group with |kS| ≤ ...