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  • Descripción del oleaje por el método de las direcciones instantáneas 

    Arribas Perea, Miguel Ángel; Egozcue Rubí, Juan José (1992-12)
    Article
    Open Access
    Se presenta el método de las direcciones instantáneas para la descripción del oleaje. El punto de partida es el hecho de que las series temporales de la elevación de la superficie del mar contienen más información que la ...

  • Order regularity for Birkhoff interpolation with lacunary polynomials 

    Palacios Quiñonero, Francisco; Rubió Díaz, Pedro; Díaz Barrero, José Luis; Rossell Garriga, Josep Maria (2011-06-01)
    Article
    Open Access
    In this short paper we present sufficient conditions for the order regularity problem in Birkhoff interpolation with lacunary polynomials. These conditions are a generalization of the Atkinson-Sharma theorem.

  • Spectral analysis of the Beznar dam accelerogram. Comparison with results in the northeastern of Spain 

    Canas Torres, José Antonio; Barbat Barbat, Horia Alejandro; Pujades Beneit, Lluís; Egozcue Rubí, Juan José; Sarrate Ramos, Josep (1991-12)
    Article
    Open Access
    Numerical analysis applied to the Beznar dam accelerograms (longitudinal and transversal components) shows that the Fourier amplitude spectrum is a good approximation to the pseudo-velocity spectra. Thís fact makes possible ...

  • Solution to problem 3795 

    Díaz Barrero, José Luis (2015-01)
    Article
    Restricted access - publisher's policy

  • Problem 1039: a constrained rational inequality 

    Díaz Barrero, José Luis (The Mathematical Association of America, 2014-11)
    Article
    Restricted access - author's decision

  • Just apply the AM-GM 

    Díaz Barrero, José Luis; Gispert Sánchez, Francesc (2015-02)
    Article
    Restricted access - author's decision

  • Problem B-1162: a bound for a sum of square roots 

    Díaz Barrero, José Luis (2015-02)
    Article
    Restricted access - author's decision

  • Problem 5334: A sum of products 

    Díaz Barrero, José Luis (John Wiley & Sons, 2015-01)
    Article
    Restricted access - author's decision

  • Solution to problem 5317 

    Díaz Barrero, José Luis (John Wiley & Sons, 2015-01)
    Article
    Restricted access - author's decision

  • El sistema alimentario global: I - definición de un espacio 

    Clotet, Ramon; Colomer Xena, Yvonne; Jarauta Bragulat, Eusebio; Mayor Zaragoza, Federico (MINISTERIO DE AGRICULTURA, PESCA Y ALIMENTACION., 2013-10)
    Article
    Open Access
    Los autores desarrollan su modelo de sistema alimentario global, presentado conceptualmente en anteriores publicaciones, basado en cuatro ejes básicos (disponibilidad, economía, política y saber) dándole una estructura ...

  • Zero and coefficient inequalities for hyperbolic polynomials 

    Rubió Massegú, Josep; Díaz Barrero, José Luis; Rubió Díaz, Pedro (2006-03)
    Article
    Open Access
    In this paper using classical inequalities and Cardan-Viète formulae some inequalities involving zeroes and coefficients of hyperbolic polynomials are given. Furthermore, considering real polynomials whose zeros lie in ...

  • The normal distribution in some constrained sample spaces 

    Mateu Figueras, Gloria; Pawlowsky Glahn, Vera; Egozcue Rubí, Juan José (2013-01-01)
    Article
    Open Access
    Phenomena with a constrained sample space appear frequently in practice. This is the case, for example, with strictly positive data, or with compositional data, such as percentages or proportions. If the natural measure ...

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