Enviaments recents

  • On a Caginalp phase-field system with two temperatures and memory 

    Conti, Monica; Gatti, Stefania; Miranville, Alain; Quintanilla de Latorre, Ramón (2017-06)
    Article
    Accés restringit per política de l'editorial
    The Caginalp phase-field system has been proposed in [4] as a simple mathematical model for phase transition phenomena. In this paper, we are concerned with a generalization of this system based on the Gurtin-Pipkin law ...
  • Stabbing segments with rectilinear objects 

    Claverol Aguas, Mercè; Garijo Royo, Delia; Korman, Matias; Seara Ojea, Carlos; Silveira, Rodrigo Ignacio (2017-09-15)
    Article
    Accés obert
    Given a set S of n line segments in the plane, we say that a region R¿R2 is a stabber for S if R contains exactly one endpoint of each segment of S. In this paper we provide optimal or near-optimal algorithms for ...
  • Action-angle variables and a KAM theorem for b-Poisson manifolds 

    Miranda Galcerán, Eva; Kiesenhofer, Anna; Scott, Geoffrey (2016-01-01)
    Article
    Accés obert
    In this article we prove an action-angle theorem for b-integrable systems on b-Poisson manifolds improving the action-angle theorem contained in [14] for general Poisson manifolds in this setting. As an application, we ...
  • Effect of process parameters on progressive freeze concentration of sucrose solutions 

    Ojeda, A.; Moreno, F.L.; Ruiz, R.Y.; Blanco Abellán, Mónica; Raventós Santamaria, Mercè; Hernández Yáñez, Eduard (2017-05-25)
    Article
    Accés restringit per política de l'editorial
    The progressive freeze concentration of sucrose solutions was tested. The effect of the initial concentration of the solution (C0), the temperature of the refrigerant (T) and the stirring speed (¿) on the final concentration ...
  • Desingularizing b^m-symplectic structures 

    Miranda Galcerán, Eva; Guillemin, Victor; Weitsman, Jonathan (2017)
    Article
    Accés obert
    A 2n-dimensional Poisson manifold (M; ) is said to be bm-symplectic if it is symplectic on the complement of a hypersurface Z and has a simple Darboux canonical form at points of Z which we will describe below. In this ...
  • On Noether's rationality problem for cyclic groups over Q 

    Plans Berenguer, Bernat (2017-06-01)
    Article
    Accés obert
    Let p be a prime number. Let C p , the cyclic group of order p , permute transitively a set of indeterminates f x 1 ;:::;x p g . We prove that the invariant eld Q ( x 1 ;:::;x p ) C p is rational over Q if and only if the ( p
  • Analizing exact controllability of l-order linear ystems 

    García Planas, María Isabel (WSEAS Press, 2017-05)
    Article
    Accés obert
    In recent years there has been growing interest in the descriptive analysis of l -order time invariant linear dynamical system x l = A l system x l = A l where A i are square complex matrices and x i denotes the i-th ...
  • Influence of admission marks on the academic performance of technical architecture students 

    Gaspar Fàbregas, Kàtia; Núñez Andrés, María Amparo; Rodríguez Jordana, Juan; Jordana Riba, Francisco de Paula (Tempus Publications, 2016)
    Article
    Accés restringit per política de l'editorial
    Traditionally, students from higher training cycle and upper secondary school education access higher technical education with a wide range of access marks in each group. The purpose of this article is to analyse how ...
  • A Classroom activity to work with real data and diverse strategies in order to build models with the help of the computer 

    Ginovart Gisbert, Marta (Springer, 2017)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Dealing with pseudo-mechanistic models, which are continuous and empirical models where the parameters involved have a meaning according to the context where they are applied, has an added value. The aim of this study was ...
  • A new labeling construction from the -product 

    López Masip, Susana Clara; Muntaner Batle, Francesc Antoni; Prabu, M. (2017-08-01)
    Article
    Accés restringit per política de l'editorial
    The ¿h-product that is referred in the title was introduced in 2008 as a generalization of the Kronecker product of digraphs. Many relations among labelings have been obtained since then, always using as a second factor a ...

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