Exploració per autor "Magaña Nieto, Antonio"Més informacióMés informació

Ara es mostren els items 30-49 de 52

    • Nodes of directed graphs ranked by solutions defined on cooperative games 

      Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (2010)
      Comunicació de congrés
      Accés obert
      Hierarchical 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 

      Magaña Nieto, Antonio; Carreras Escobar, Francisco; Rajadell Carreras, Manuel (Intangible Capital, 2009-10)
      Article
      Accés obert
      Consideramos 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 

      Carreras Escobar, Francisco; Magaña Nieto, Antonio; Rajadell Carreras, Manuel (2009)
      Article
      Accés obert
      Consideramos 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 

      Bazarra, Noelia; Fernández, José Ramón; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2020-03-30)
      Article
      Accés obert
      In 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 

      Bazarra, Noelia; Fernández, Jose R.; Leseduarte Milán, María Carme; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2022-02)
      Article
      Accés restringit per política de l'editorial
      We 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 

      Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2018-01)
      Article
      Accés obert
      This 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 

      Fernández, José Ramón; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (Springer, 2019-06-03)
      Capítol de llibre
      Accés restringit per política de l'editorial
      In 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 

      Bazarra, Noelia; Fernández, José Ramón; Leseduarte Milán, María Carme; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2019-10-30)
      Article
      Accés restringit per política de l'editorial
      In 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 

      Magaña Nieto, Antonio; Miranville, Alain; Quintanilla de Latorre, Ramón (2018-06-15)
      Article
      Accés obert
      We 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 

      Bazarra, Noelia; Fernández, José Ramón; Leseduarte Milán, María Carme; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2019-09-01)
      Article
      Accés obert
      In 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 

      Magaña Nieto, Antonio; Miranville, Alain; Quintanilla de Latorre, Ramón (AMER INST MATHEMATICAL SCIENCES-AIMS, 2019-09-12)
      Article
      Accés obert
      The 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 

      Liu, Zhuangyi; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (Wiley-VCH, 2016-07-01)
      Article
      Accés obert
      In 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 

      Leseduarte Milán, María Carme; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2015-07-01)
      Article
      Accés obert
      This 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 ...

    • On the uniqueness and analyticity in viscoelasticity with double porosity 

      Bazarra, Noelia; Fernández, José Ramón; Leseduarte Milán, María Carme; Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2019-04-01)
      Article
      Accés obert
      In this paper we analyze the system of equations that models the behaviour of materials with a double porous structure. We introduce dissipation mechanisms in both structures. We show existence, uniqueness and analyticity ...

    • On the uniqueness and analyticity of solutions in micropolar thermoviscoelasticity 

      Magaña Nieto, Antonio; Quintanilla de Latorre, Ramón (2014-04-01)
      Article
      Accés obert
      This paper deals with the linear theory of isotropic micropolar thermoviscoelastic materials. When the dissipation is positive definite, we present two uniqueness theorems. The first one requires the extra assumption that ...

    • On the viscoelastic mixtures of solids 

      Fernández, Jose R.; Magaña Nieto, Antonio; Masid, Maria; Quintanilla de Latorre, Ramón (2019-04)
      Article
      Accés obert
      In this paper we analyze an homogeneous and isotropic mixture of viscoelastic solids. We propose conditions to guarantee the coercivity of the internal energy and also of the dissipation, first in dimension two and later ...

    • Qualitative results for a mixture of Green-Lindsay thermoelastic solids 

      Magaña Nieto, Antonio; Muñoz Rivera, Jaime E.; Naso, Maria Grazia; Quintanilla de Latorre, Ramón (2018-07)
      Article
      Accés obert
      We study qualitative properties of the solutions of the system of partial differential equations modeling thermomechanical deformations for mixtures of thermoelastic solids when the theory of Green and Lindsay for the ...

    • Reconstructing a simple game from a uniparametric family of allocations 

      Amer Ramon, Rafael; Giménez Pradales, José Miguel; Magaña Nieto, Antonio (Springer, 2013-10-01)
      Article
      Accés restringit per política de l'editorial
      Several relationships between simple games and a particular type of solu- tions for cooperative games are studied in this paper. These solutions belong to the set of semivalues and they are related to a unique parameter ...

    • Reparto de los ahorros de la gestión conjunta de stocks 

      Magaña Nieto, Antonio; Rajadell Carreras, Manuel (Intangible Capital, 2004-09)
      Article
      Accés obert
      En este trabajo se prueba que la gestión conjunta de stocks se traduce en un beneficio para las compañías que deciden cooperar, incluso cuando sus demandas son diferentes. Sin embargo, en este caso, surge un problema: ¿cómo ...

    • Teoría de juegos 

      Carreras Escobar, Francisco; Magaña Nieto, Antonio; Amer Ramon, Rafael (Edicions UPC, 2001)
      Llibre
      Accés restringit a la comunitat UPC
      El presente libro va dirigido principalmente a los estudiantes de organización industrial. No es un tratado, sino una introducción a la teoria de juegos, que pretende exponer la temática y la metodología de esta rama de ...