Browsing by Subject "Matemàtica aplicada"
Now showing items 1-20 of 53
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A Caginalp phase-field system based on type III heat conduction with two temperatures
(2016-06-01)
Article
Open AccessOur 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
(2010-08-01)
Article
Restricted access - publisher's policyOur 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
(2009-02)
Article
Open AccessThe 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
(1987-06)
Article
Restricted access - publisher's policyThis 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
(2010-07-01)
Article
Restricted access - publisher's policyIn 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
(Elsevier, 2009-10)
Article
Restricted access - publisher's policyIn 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
(2008-06-13)
External research report
Open AccessIn 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
(2008-11-19)
Audiovisual
Open Access -
Analyticity in porous-thermoelasticity with microtemperatures
(2012-10-15)
Article
Restricted access - publisher's policyIn 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
(2010-06-01)
Article
Restricted access - publisher's policyIn 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]
(2010-08-01)
Article
Restricted access - publisher's policyIn 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
(2009)
Conference report
Open AccessThis 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
(Universitat Politècnica de Catalunya, 2002)
Article
Open AccessLas 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
(Elsevier, 2009)
Article
Restricted access - publisher's policyContinuous 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
(Universitat Politècnica de Catalunya, 2010-01-27)
Bachelor thesis
Open Access -
Cropping Euler factors of modular L-functions
(2013-09)
Article
Open AccessAccording 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
(2010-11-01)
Article
Restricted access - publisher's policyIn 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
(2010-09)
Article
Restricted access - publisher's policyIn 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
(Elsevier, 2009-04)
Article
Restricted access - publisher's policyIn 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
(2014-10)
Article
Open AccessThis 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 ...