Exploració per autor "Magaña Nieto, Antonio"
Ara es mostren els items 23-42 de 52
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Equacions diferencials : problemes resolts
(Iniciativa Digital Politècnica, 2012)
Llibre
Accés obertLa resolució de problemes és una metodologia activa d'aprenentatge que estimula l'adquisició de coneixements i, alhora, ajuda a desenvolupar competències. Al món de l'enginyeria es fan servir models matemàtics on apareixen ... -
Exponential decay in nonsimple thermoelasticity of type III
(2016-01-15)
Article
Accés obertThis paper deals with the model proposed for nonsimple materials with heat conduction of type III.We analyze rst the general system of equations, determine the behavior of its solutions with respect to the time and show ... -
Exponential decay in one-dimensional Type II/III thermoelasticity with two porosities
(2020-07-30)
Article
Accés obertIn this paper we consider the theory of thermoelasticity with a double porosity structure in the context of the Green-Naghdi types II and III heat conduction models. For the type II, the problem is given by four hyperbolic ... -
Exponential decay of solutions in type II porous-thermo-elasticity with quasi-static microvoids
(2020-12-15)
Article
Accés obertIn this note we study the problem proposed by the one-dimensional thermo-porous-elasticity of type II with quasi-static microvoids or, in mathematical terms, when the second time derivative of the volume fraction is so ... -
Exponential stability in three-dimensional type III thermo-porous-elasticity with microtemperatures
(2020-04)
Article
Accés obertWe study the time decay of the solutions for the type III thermoelastic theory with microtemperatures and voids. We prove that, under suitable conditions for the constitutive tensors, the solutions decay exponentially. ... -
Exponential stability in type III thermoelasticity with microtemperatures
(2018-10)
Article
Accés obertIn this paper we consider the type III thermoelastic theory with microtemperatures. We study the time decay of the solutions and we prove that under suitable conditions for the constitutive tensors, the solutions decay ... -
Formación de coaliciones en los juegos cooperativos y juegos con múltiples alternativas
(Universitat Politècnica de Catalunya, 1996-06-13)
Tesi
Accés obertEl trabajo se centra en los juegos cooperativos con utilidad transferible, que son excelentes modelos matemáticos para analizar situaciones de conflicto y cooperación entre diversos agentes. Consta de dos partes.<br/><br/>En ... -
Nodes of directed graphs ranked by solutions defined on cooperative games
(2010)
Comunicació de congrés
Accés obertHierarchical structures, transportation systems, communication networks and even sports competitions can be modeled by means of directed graphs. Since digraphs without a predefined game are considered, the main part of ... -
Notas sobre los Rappels y los descuentos uniformes
(Intangible Capital, 2009-10)
Article
Accés obertConsideramos los descuentos comerciales por compras basados en rappels. Si se plantea un descuento de tipo uniforme aparece una paradoja no deseada: el “truco del comprador”. Para eludirla se proponen dos variantes que ... -
Notas sobre los rappels y los descuentos uniformes
(2009)
Article
Accés obertConsideramos los descuentos comerciales por compras basados en rappels. Si se plantea un descuento de tipo uniforme aparece una paradoja no deseada: el “truco del comprador”. Para eludirla se proponen dos variantes que ... -
Numerical analysis of a dual-phase-lag model involving two temperatures
(2020-03-30)
Article
Accés obertIn this paper, we numerically analyse a phase-lag model with two temperatures which arises in the heat conduction theory. The model is written as a linear partial differential equation of third order in time. The variational ... -
Numerical analysis of a problem involving a viscoelastic body with double porosity
(2022-02)
Article
Accés restringit per política de l'editorialWe study from a numerical point of view a multidimensional problem involving a vis- coelastic body with two porous structures. The mechanical problem leads to a linear system of three coupled hyperbolic partial differential ... -
On the existence and uniqueness in phase-lag thermoelasticity
(2018-01)
Article
Accés obertThis paper is devoted to analyze the phaselag thermoelasticity problem. We study two different cases and we prove, for each one of them, that the solutions of the problem are determined by a quasicontractive semigroup. ... -
On the exponential decay of solutions in dual-phase-lag porous thermoelasticity
(Springer, 2019-06-03)
Capítol de llibre
Accés restringit per política de l'editorialIn the last years, a big interest has been developed to understand the time decay of solutions for the porous thermoelasticity with different thermal mechanisms. We here want to consider the problem of the one-dimensional ... -
On the linear thermoelasticity with two porosities: numerical aspects
(2019-10-30)
Article
Accés restringit per política de l'editorialIn this work we analyze, from the numerical point of view, a dynamic problem involving a thermoelastic rod. Two porosities are considered: the first one is the macro-porosity, connected with the pores of the material, and ... -
On the stability in phase-lag heat conduction with two temperatures
(2018-06-15)
Article
Accés obertWe investigate the well-posedness and the stability of the solutions for several Taylor approximations of the phase-lag two-temperature equations.We give conditions on the parameters which guarantee the existence and ... -
On the thermoelasticity with two porosities: asymptotic behaviour
(2019-09-01)
Article
Accés obertIn this paper we consider the one-dimensional version of thermoelasticity with two porous structures and porous dissipation on one or both of them. We first give an existence and uniqueness result by means of semigroup ... -
On the time decay in phase-lag thermoelasticity with two temperatures
(AMER INST MATHEMATICAL SCIENCES-AIMS, 2019-09-12)
Article
Accés obertThe aim of this paper is to study the time decay of the solutions for two models of the one-dimensional phase-lag thermoelasticity with two temperatures. The first one is obtained when the heat flux vector and the inductive ... -
On the time decay of solutions for non-simple elasticity with voids
(Wiley-VCH, 2016-07-01)
Article
Accés obertIn this work we consider the non-simple theory of elastic material with voids and we investigate how the coupling of these two aspects of the material affects the behavior of the solutions. We analyze only two kind of ... -
On the time decay of solutions in micropolar viscoelasticity
(2015-07-01)
Article
Accés obertThis paper deals with isotropic micropolar viscoelastic materials. It can be said that that kind of materials have two internal structures: the macrostructure, where the elasticity effects are noticed, and the ...
