Browsing by Subject "Matemàtica aplicada"

Now showing items 1-20 of 53

    • A Caginalp phase-field system based on type III heat conduction with two temperatures 

      Miranville, Alain; Quintanilla de Latorre, Ramón (2016-06-01)
      Article
      Open Access
      Our aim in this paper is to study a generalization of the Caginalp phasefield system based on the theory of type III thermomechanics with two temperatures for the heat conduction. In particular, we obtain well-posedness ...

    • A Caginalp phase-field system with a nonlinear coupling 

      Miranville, Alain; Quintanilla de Latorre, Ramón (2010-08-01)
      Article
      Restricted access - publisher's policy
      Our aim in this article is to study a Caginalp phase-field system based on a thermomechanical theory of deformable continua proposed by Green and Naghdi (called type III thermoelasticity) and with a nonlinear coupling. ...

    • A concept of weighted connectivity on connected graphs 

      Amer Ramon, Rafael; Giménez Pradales, José Miguel (2009-02)
      Article
      Open Access
      The introduction of a {0,1}-valued game associated to a connected graph allows us to assign to each node a value of weighted connectivity to the different solutions that for the cooperative games are obtained by means of ...

    • A discrete optimization problem in local networks and data alignment 

      Fiol Mora, Miquel Àngel; Andrés Yebra, José Luis; Alegre de Miguel, Ignacio; Valero Cortés, Mateo (1987-06)
      Article
      Restricted access - publisher's policy
      This paper presents the solution of the following optimization problem that appears in the design of double-loop structures for local networks and also in data memory, allocation and data alignment in SIMD processors. Consider ...

    • A note on a non-standard problem for an equation with a delay term 

      Quintanilla de Latorre, Ramón (2010-07-01)
      Article
      Restricted access - publisher's policy
      In this note we investigate the continuous dependence of the solutions for a theory of heat conduction with a delay term. We use energy arguments to obtain the continuous dependence results and spectral arguments to prove ...

    • A note on the two temperature theory with dual-phase-lag delay: some exact solutions 

      Quintanilla de Latorre, Ramón; Jordan, P.M. (Elsevier, 2009-10)
      Article
      Restricted access - publisher's policy
      In this note we present exact solutions of two initial-boundary value problems (IBVP)s in the setting of a recently-introduced theory of heat conduction, wherein the two temperature theory of the late 1960s is merged ...

    • 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 simulation-based algorithm to predict time-dependent structural realiability 

      Juan Pérez, Juan Alejandro (2008-11-19)
      Audiovisual
      Open Access

    • 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 ...

    • Analyticity of solutions in type III thermoelastic plates 

      Liu, Zhuangyi; Quintanilla de Latorre, Ramón (2010-06-01)
      Article
      Restricted access - publisher's policy
      In this paper, we consider the system of equations that governs the evolution of the homogeneous and isotropic prestressed type III thermoelastic plates. We prove that the semigroup that generates the solutions to this ...

    • Analyticity of solutions in type III thermoelastic plates [republished article] 

      Liu, Zhuangyi; Quintanilla de Latorre, Ramón (2010-08-01)
      Article
      Restricted access - publisher's policy
      In this paper, we consider the system of equations that governs the evolution of the homogeneous and isotropic prestressed type III thermoelastic plates. We prove that the semigroup that generates the solutions to this ...

    • Applications of discrete-event simulation to reliability and availability assesment in civil engineering structures 

      Juan Pérez, Angel Alejandro; Monteforte, A.; Ferrer Biosca, Alberto; Serrat Piè, Carles; Faulín, Javier (2009)
      Conference report
      Open Access
      This paper discusses the convenience of predicting, quantitatively, time-dependent reliability and availability levels asso-ciated with most building or civil engineering structures. Then, the paper reviews different ...

    • Clasificación de variables y reconciliación de datos en ingeniería de procesos 

      Lozano, Miguel A.; Remiro, Jesús A. (Universitat Politècnica de Catalunya, 2002)
      Article
      Open Access
      Las medidas de proceso de las plantas térmicas se utilizan para tareas de control, evaluación de rendimientos, optimización de la operación, etc. Frecuentemente se dispone de más medidas que las necesarias. La reconciliación ...

    • Continuous dependence on initial geometry in linear elastodynamics on a half cylinder 

      Knops, R.J.; Quintanilla de Latorre, Ramón (Elsevier, 2009)
      Article
      Restricted access - publisher's policy
      Continuous dependence on the initial time geometry is established for the mean-square integral of the displacement in a linear inhomogeneous anisotropic elastic semi-infinite cylinder in motion subject to a prescribed ...

    • Códigos convolucionales con propiedades predicibles correctoras de errores 

      Miravet Comellas, Jordi (Universitat Politècnica de Catalunya, 2010-01-27)
      Bachelor thesis
      Open Access

    • Cropping Euler factors of modular L-functions 

      González Rovira, Josep; Jiménez Urroz, Jorge; Lario Loyo, Joan Carles (2013-09)
      Article
      Open Access
      According to the Birch and Swinnerton-Dyer conjectures, if A/Q is an abelian variety, then its L-function must capture a substantial part of the properties of A. The smallest number field L where A has all its endomorphisms ...

    • Energy decay rate of a mixed type II and type III thermoelastic system 

      Liu, Zhuangyi; Quintanilla de Latorre, Ramón (2010-11-01)
      Article
      Restricted access - publisher's policy
      In this paper, we study the energy decay rate for a mixed type II and type III thermoelastic system. The system consist of a wave equation and a heat equation of type II in another part of the domain, coupled in certain ...

    • Existence, uniqueness and convergence of the regularized primal-dual central path 

      Castro Pérez, Jordi; Cuesta Andrea, Jordi (2010-09)
      Article
      Restricted access - publisher's policy
      In a recent work [J. Castro, J. Cuesta, Quadratic regularizations in an interior-point method for primal block-angular problems, Mathematical Programming, in press (doi:10.1007/s10107-010-0341-2)] the authors improved one ...

    • Exponential decay in a thermoelastic mixture of solids 

      Alves, M.S.; Muñoz Rivera, Jaime E.; Quintanilla de Latorre, Ramón (Elsevier, 2009-04)
      Article
      Restricted access - publisher's policy
      In this paper, we investigate the asymptotic behaviour of solutions to the initial boundary value problem for a one-dimensional mixture of thermoelastic solids. Our main result is to establish a necessary and sufficient ...

    • Hölder stability in type III thermoelastodynamics 

      Leseduarte Milán, María Carme; Quintanilla de Latorre, Ramón (2014-10)
      Article
      Open Access
      This note is concerned with the linear (and linearized) Type III thermoelastodynamic theory proposed by Green and Naghdi. We here assume that the mass density is positive and the thermal conductivity tensor is positive ...