Now showing items 9896-9915 of 66651

  • Bottom-up processing of thermoelectric nanocomposites from colloidal nanocrystal building blocks: the case of Ag2Te–PbTe 

    Cadavid, Doris; Ibáñez, María; Gorsse, Stéphane; López Martínez, Antonio Miguel; Cirera, Albert; Morante, Joan Ramón; Cabot, Andreu (2012-11-28)
    Article
    Restricted access - publisher's policy
    Nanocomposites are highly promising materials to enhance the efficiency of current thermoelectric devices. A straightforward and at the same time highly versatile and controllable approach to produce nanocomposites is ...
  • Bottoming bending process assisted by electroplasticity 

    Sánchez Egea, Antonio José; González Rojas, Hernan Alberto; Celentano, Diego Javier; Travieso Rodriguez, Jose Antonio; Llumà Fuentes, Jordi (EUETIB, 2013-12)
    Conference report
    Open Access
    Este estudio reporta la influencia de los efectos atérmicos de la electroplasticidad en el proceso de doblado por estampa. Se fabrica un generador que generar pulsos de 300A y un ancho de 50μs. Los materiales estudiados ...
  • Bouncing loop quantum cosmology from F(T) gravity 

    Amorós Torrent, Jaume; Haro Cases, Jaume; Odintsov, Sergei D. (2013-05)
    Article
    Open Access
    The big bang singularity could be understood as a breakdown of Einstein’s general relativity at very high energies. By adopting this viewpoint, other theories that implement Einstein cosmology at high energies might solve ...
  • Bouncing of bubbles impacting at a free surface 

    Suñol Galofre, Francesc Xavier; González Cinca, Ricardo (2009)
    Conference report
    Open Access
  • Boundary conditions for gradient-enhanced models with smoothed displacements 

    Tamayo Mas, Elena; Rodríguez Ferran, Antonio (2012)
    Article
    Open Access
    Los modelos de gradiente basados en desplazamientos suavizados son una alternativa a los modelos estándares para simular numéricamente el proceso de fallo de materiales. En esta formulación alternativa coexisten los ...
  • Boundary layer effects on the vortex shedding in a Donaldsontype hydrofoil 

    Fontanals García, Alfred; Guardo Zabaleta, Alfredo de Jesús; Zobeiri, Amirreza; Egusquiza Estévez, Eduard; Farhat, Mohamed; Avellan, François (2014)
    Conference lecture
    Open Access
    Fluid - Structure Interaction (FSI) phenomena is becoming a relevant study field for the design or revamping of hydropower plants. The generalized trend of increasing flow rates and reducing rotor blades/stay vanes thickness ...
  • Boundary Layer Late Afternoon and Sunset Turbulence: the BLLAST 2011 experiment 

    Pino González, David; Lothon, Marie; Lohou, Fabienne; Pardyjak, Erick; Reuder, Joaquim; Legain, Dominique; Durand, Pierre; Couvreux, Fleur; Vilà-Guerau de Arellano, Jordi (2012)
    Conference report
    Open Access
  • Boundary regularity for the fractional heat equation 

    Fernández-Real Girona, Xavier (Universitat Politècnica de Catalunya, 2014-09)
    Bachelor thesis
    Open Access
    In this dissertation we present an introduction to nonlocal operators, and in particular, we study the fractional heat equation, which involves the fractional Laplacian of order 2s. In the first chapters we make a review ...
  • Boundary value problems for Schrödinger operators on a path 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia (2012-05-25)
    External research report
    Open Access
    In this work, we concentrate on determining explicit expressions, via suitable orthogonal polynomials on the line, for the Green function associated with any regular boundary value problem on a weighted path, whose weights ...
  • Boundary value problems for Schrödinger operators on a Path Associated to Orthogonal Polynomials 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia (Springer, 2013)
    Part of book or chapter of book
    Restricted access - publisher's policy
    In this work, we concentrate on determining explicit expressions, via suitable orthogonal polynomials on the line, for the Green function associated with any regular boundary value problem on a weighted path, whose weights ...
  • Boundary-type sets and product operators in graphs 

    Cáceres, Jose; Hernando Martín, María del Carmen; Mora Giné, Mercè; Pelayo Melero, Ignacio Manuel; Puertas González, María Luz (2010)
    Conference lecture
    Open Access
  • Bounded and dissipative solutions of the Bouc-Wen model for hysteretic structural systems 

    Ikhouane, Fayçal; Mañosa Fernández, Víctor; Rodellar Benedé, José (2004-06)
    Part of book or chapter of book
    Open Access
    The aim of this paper is to give the conditions on the hysteretic Bouc-Wen model so that (i) it has the property of being bounded input bounded output (BIBO), and (ii) it dissipates energy (or is passive). This study leads ...
  • Bounded expansion in models of webgraphs 

    Gago Álvarez, Silvia; Schlatter, Dirk (2007-10-02)
    Article
    Open Access
    We study the bounded expansion of several models of web graphs. We show that various deterministic graph models for large complex networks have constant bounded expansion.We study two random models of webgraphs, showing ...
  • Bounded model checking for asynchronous concurrent systems 

    Rakotoarisoa, Manitra Johanesa (Universitat Politècnica de Catalunya, 2014-03-04)
    Doctoral thesis
  • Bounded solutions of some nonlinear elliptic equations in cylindrical domains 

    Calsina Ballesta, Ángel; Solà-Morales Rubió, Joan de; València Guitart, Marta (1997)
    Article
    Open Access
    The existence of a (unique) solution of the second order semilinear elliptic equation $$ \sum^{n}_{i,j=0}a_{ij}(x)u_{x_{i}x_{j}}+f(\nabla u,u,x)=0 $$ with $x=(x_{0},x_{1},\dots, x_{n})\in (s_{0},\infty )\times \Omega '$, ...
  • Bounded synchronization in resistive multi-terminal VSC-HVDC transmission systems 

    Dòria Cerezo, Arnau; Olm Miras, Josep Maria; di Bernardo, Mario; Quaglia, Massimiliano; Nuño, Emmanuel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Multi-terminal VSC-HVDC transmission is a promising solution to transport energy from the generating plants to the distribution stations, and the number and size of the corresponding power grids is expected to increase in ...
  • Bounded-width QBF is PSPACE-complete 

    Atserias Peri, Albert; Oliva Valls, Sergi (2014-11-01)
    Article
    Restricted access - publisher's policy
    Tree-width and path-width are two well-studied parameters of structures that measure their similarity to a tree and a path, respectively. We show that QBF on instances with constant path-width, and hence constant tree-width, ...
  • Bounded-width QBF is PSPACE-complete 

    Atserias Peri, Albert; Oliva Valls, Sergi (Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2013)
    Conference report
    Open Access
    Tree-width is a well-studied parameter of structures that measures their similarity to a tree. Many important NP-complete problems, such as Boolean satisfiability (SAT), are tractable on bounded tree-width instances. In ...
  • Bounding Hilbert Space dimension from Temporal Correlations 

    Gallego López, Rodrigo (Universitat Politècnica de Catalunya, 2009-09-09)
    Master thesis
    Open Access
    In this work, we tackle the problem of assessing the Hilbert space dimension from the set of correlations obtained when measuring in a nonlocal black box scheme. The concept of a dimension witness and its recent applications ...
  • Bounding steady-state availability models with group repair and phase type repair distributions 

    Carrasco, Juan A. (1999-05)
    Article
    Open Access
    We propose an algorithm to obtain bounds for the steady-state availability using Markov models in which only a small portion of the state space is generated. The algorithm is applicable to models with group repair and ...