Enviaments recents

  • Vertex-disjoint cycles in bipartite tournaments 

    González Moreno, Diego; Balbuena Martínez, Maria Camino Teófila; Olsen, Mika (2016-10)
    Article
    Accés restringit per política de l'editorial
    Let k=2 be an integer. Bermond and Thomassen conjectured that every digraph with minimum out-degree at least 2k-1 contains k vertex-disjoint cycles. Recently Bai, Li and Li proved this conjecture for bipartite digraphs. ...
  • A non-intrusive proper generalized decomposition scheme with application in biomechanics 

    Zou, Xi; Conti, Michele; Díez, Pedro; Auricchio, Ferdinando (John Wiley & Sons, 2017-09-07)
    Article
    Accés restringit per política de l'editorial
    Proper generalized decomposition (PGD) is often used for multiquery and fast-response simulations. It is a powerful tool alleviating the curse of dimensionality affecting multiparametric partial differential equations. ...
  • Generalized parametric solutions in Stokes flow 

    Díez, Pedro; Zlotnik, Sergio; Huerta, Antonio (2017-11-01)
    Article
    Accés restringit per política de l'editorial
    Design optimization and uncertainty quantification, among other applications of industrial interest, require fast or multiple queries of some parametric model. The Proper Generalized Decomposition (PGD) provides a separable ...
  • Numerical modelling of multi-phase multi-component reactive transport in the Earth's interior 

    Oliveira, Beñat; Afonso, Juan Carlos; Zlotnik, Sergio; Díez, Pedro (2018-01-01)
    Article
    Accés restringit per política de l'editorial
    We present a conceptual and numerical approach to model processes in the Earth's interior that involve multiple phases that simultaneously interact thermally, mechanically and chemically. The approach is truly multiphase ...
  • Steel-fibre-reinforced self-compacting concrete with 100% recycled mixed aggregates suitable for structural applications 

    Ortiz Lozano, José Ángel; Fuente Antequera, Albert de la; Mena Sebastià, Francisco; Segura Pérez, Ignacio; Aguado de Cea, Antonio (2017-12)
    Article
    Accés restringit per política de l'editorial
    This research focuses on designing and characterizing steel-fibre-reinforced self-compacting concrete using recycled aggregates (SFR-SCC-RA). Six different concrete dosages have been designed, and two extensive mechanical ...
  • Intercomparison of attenuation correction algorithms for single-polarized X-band radars 

    Lengfeld, Katharina; Berenguer Ferrer, Marc; Sempere Torres, Daniel (2018-03)
    Article
    Accés restringit per política de l'editorial
    Attenuation due to liquid water is one of the largest uncertainties in radar observations. The effects of attenuation are generally inversely proportional to the wavelength, i.e. observations from X-band radars are more ...
  • A computational multiscale homogenization framework accounting for inertial effects: application to acoustic metamaterials modelling 

    Roca Cazorla, David; Lloberas Valls, Oriol; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (2017-11)
    Article
    Accés obert
    A framework, based on an extended Hill–Mandel principle accounting for inertial effects (Multiscale Virtual Work principle), is developed for application to acoustic problems in the context of metamaterials modelling. The ...
  • Microbiome datasets are compositional: and this is not optional 

    Gloor, Gregory B.; Macklaim, Jean M.; Pawlowsky Glahn, Vera; Egozcue Rubí, Juan José (2017-11)
    Article
    Accés obert
    Datasets collected by high-throughput sequencing (HTS) of 16S rRNA gene amplimers, metagenomes or metatranscriptomes are commonplace and being used to study human disease states, ecological differences between sites, and ...
  • Edge dislocations as sinks for sub-nanometric radiation induced defects in a-iron 

    Anento Moreno, Napoleón; Malerba, L.; Serra Tort, Ana María (Elsevier, 2018-01)
    Article
    Accés restringit per política de l'editorial
    The role of edge dislocations as sinks for small radiation induced defects in bcc-Fe is investigated by means of atomistic computer simulation. In this work we investigate by Molecular Statics (T = 0K) the interaction ...
  • Variational Multiscale error estimators for solid mechanics adaptive simulations: an Orthogonal Subgrid Scale approach 

    Baiges Aznar, Joan; Codina, Ramon (2017-10)
    Article
    Accés restringit per política de l'editorial
    In this work we present a general error estimator for the finite element solution of solid mechanics problems based on the Variational Multiscale method. The main idea is to consider a rich model for the subgrid scales as ...
  • On the robustness to corrosion in the life cycle assessment of an existing reinforced concrete bridge 

    Cavaco, E. S.; Neves, Luís A.C; Casas Rius, Joan Ramon (Taylor & Francis, 2018-02)
    Article
    Accés restringit per política de l'editorial
    Management of existing structures has traditionally been based on condition assessment, based on visual inspections, disregarding the susceptibility of different structural types to aging and deterioration. Robustness, as ...
  • Computational material design for acoustic cloaking 

    Méndez, Carlos Alberto; Podestá, J.M.; Lloberas Valls, Oriol; Toro, Sebastian; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (John Wiley & Sons, 2017-12)
    Article
    Accés obert
    A topology optimization technique based on the topological derivative and the level set function is utilized to design/synthesize the micro-structure of a pentamode material for an acoustic cloaking device. The technique ...

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