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Enviaments recents

  • La aritmética matricial como modelo del entorno cotidiano 

    Gómez Urgellés, Joan Vicenç (2018-03-12)
    Article
    Accés obert
    This article is a proposition for the teaching / learning of some matrix calculation elements from mathematical modeling. As a matter of fact, some daily situations are established showing how we can create models to ...

  • On quasi-static approximations in linear thermoelastodynamics 

    Knops, Robin J.; Quintanilla de Latorre, Ramón (2018)
    Article
    Accés restringit per política de l'editorial
    The validity of the coupled and uncoupled quasi-static approximations is considered for the initial boundary value problem of linear thermoelasticity subject to homoge-neous Dirichlet boundary conditions, and for solutions ...

  • Numerical analysis of a thermoelastic problem with dual-phase-lag heat conduction 

    Bazarra, Noelia; Campo, Marco; Fernández, José Ramón; Quintanilla de Latorre, Ramón (2019-01-31)
    Article
    Accés restringit per política de l'editorial
    In this paper we study, from the numerical point of view, a thermoelastic problem with dual-phase-lag heat conduction. The variational formulation is written as a coupled system of hyperbolic linear variational equations. ...

  • Leonhard Euler (1707-1783): el mestre de tots nosaltres 

    Massa Esteve, Maria Rosa (Societat Catalana de Matemàtiques (SCM), 2018-12)
    Article
    Accés obert

  • Curves and surfaces with constant nonlocal mean curvature: Meeting Alexandrov and Delaunay 

    Cabré Vilagut, Xavier; Fall, Mouhamed Moustapha; Solà-Morales Rubió, Joan de (2018-12-01)
    Article
    Accés restringit per política de l'editorial
    We are concerned with hypersurfaces of RN with constant nonlocal (or fractional) mean curvature. This is the equation associated to critical points of the fractional perimeter under a volume constraint. Our results are ...

  • Reheating in quintessential inflation via gravitational production of heavy massive particles: a detailed analysis 

    Haro Cases, Jaume; Yang, Weiqiang; Pan, Supriya (2019-01-01)
    Article
    Accés obert
    An improved version of the well-known Peebles-Vilenkin model unifying early inflationary era to current cosmic acceleration, is introduced in order to match with the theoretical values of the spectral quantities provided ...

  • Improvement of the ionospheric radio occultation retrievals by means of accurate global ionospheric maps 

    Shao, Yixie; González Casado, Guillermo; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià (2018-12-22)
    Article
    Accés restringit per decisió de l'autor
    The Abel inversion method is the classic approach to retrieve electron density profiles from radio occultation measurements, assuming that the electron density is only dependent upon height. In the early 2000s, the total ...

  • Singular spectrum analysis filtering and Fourier inversion: an efficient and fast way to improve resolution and quality of current density maps with low-cost Hall scanning systems 

    Amorós Torrent, Jaume; Folch Duran, Arnau; Carrera Vilanova, Miquel; López López, José; Granados García, Xavier (2019-01-01)
    Article
    Accés restringit per política de l'editorial
    Measurement Science and Technology Paper Singular spectrum analysis filtering and Fourier inversion: an efficient and fast way to improve resolution and quality of current density maps with low-cost Hall scanning systems ...

  • Numerical resolution of an exact heat conduction model with a delay term 

    Campo, Marco; Fernández, José Ramón; Quintanilla de Latorre, Ramón (2019-02)
    Article
    Accés obert
    In this paper we analyze, from the numerical point of view, a dynamic thermoelastic problem. Here, the so-called exact heat conduction model with a delay term is used to obtain the heat evolution. Thus, the thermomechanical ...

  • A note on a question of Dimca and Greuel 

    Almirón Cuadros, Patricio; Blanco Fernández, Guillem (Elsevier, 2019-01-22)
    Article
    Accés obert
    In this note we give a positive answer to a question of Dimca and Greuel about the quotient between the Milnor and Tjurina numbers of an isolated plane curve singularity in the cases of one Puiseux pair and semi-quasi-homogeneous ...

  • Solving Becker's assortative assignments and extensions 

    Martínez De Albeniz, Javier; Rafels Pallarola, Carlos; Ybern Carballo, M. de Las Nieves (Academic Press, 2018-09-19)
    Article
    Accés obert
    We analyze assortative assignment games, introduced in Becker (1973) and Eriksson et al. (2000). We study the extreme core points and show an easy way to compute them. We find a natural solution for these games. It coincides ...

  • Algebraic methods in phylogenetics 

    Casanellas Rius, Marta; Rhodes, John (2018-12-19)
    Article
    Accés restringit per política de l'editorial
    To those outside the field, and even to some focused on empirical applications, phylogenetics may appear to have little to do with algebra. Probability and statistics are clearly important ingredients, as modeling and ...

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