Ara es mostren els items 5758-5777 de 89262

  • An efficient edge-based level set finite element method for free surface flow problems 

    Rossi, Riccardo; Larese De Tetto, Antonia; Dadvand, Pooyan; Oñate Ibáñez de Navarra, Eugenio (2013-02)
    Article
    Accés restringit per política de l'editorial
    We present an efficient technique for the solution of free surface flow problems using level set and a parallel edge-based finite elementmethod. An unstructured semi-explicit solution scheme is proposed. A custom data ...
  • An efficient fault diagnosis method for PV systems based on operating voltage-window 

    Gokmen, Nuri; Karatepe, Engin; Silvestre Bergés, Santiago; Celik, Berk; Ortega Villasclaras, Pablo Rafael (2013-09)
    Article
    Accés restringit per política de l'editorial
    With the increasing use of photovoltaic (PV) systems, the research studies to improve the efficiency of PV systems have gained greater interest in recent years, especially under non-uniform operating conditions. However, ...
  • An Efficient generic algorithm for the generation of unlabelled cycles 

    Martínez Parra, Conrado; Molinero Albareda, Xavier (2003-06-06)
    Report de recerca
    Accés obert
    In this report we combine two recent generation algorithms to obtain a new algorithm for the generation of unlabelled cycles. Sawada's algorithm lists all k-ary unlabelled cycles with fixed content, that is, the number ...
  • An efficient hybrid iterated local search algorithm for the total tardiness blocking flow shop problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (2012-09-04)
    Report de recerca
    Accés obert
    This paper deals with the blocking flow shop problem and proposes an Iterated Local Search (ILS) procedure combined with a variable neighbourhood search (VNS) for the total tardiness minimization. The proposed ILS makes ...
  • An efficient implementation of the FAPEC compression algorithm in the CCSDS image standard 

    Artigues Aguiló, Gabriel (Universitat Politècnica de Catalunya, 2012-06-26)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] The implementation of an efficient image compressor using the FAPEC coder in the CCSDS image data compression standard (122.0).
  • An efficient iterated local search algorithm for the total tardiness blocking flow shop problem 

    Ribas Vila, Immaculada; Companys Pascual, Ramón; Tort-Martorell Llabrés, Xavier (Taylor & Francis, 2013-04-27)
    Article
    Accés restringit per política de l'editorial
    This paper deals with the blocking flow shop problem and proposes an Iterated Local Search (ILS) procedure combined with a variable neighbourhood search (VNS) for the total tardiness minimisation. The proposed ILS makes ...
  • An efficient metaheuristic for the inventory orienteering problem and the single-vehicle cyclic inventory routing problem 

    Vansteenwegen, Pieter; Mateo Doll, Manuel (2013)
    Text en actes de congrés
    Accés obert
  • An efficient method for the azimuth compression of geosynchronous SAR data through sub-apertures processing 

    Belotti, Michele; Broquetas Ibars, Antoni; Leanza, Antonio; Monti Guarnieri, Andrea; Recchia, Andrea; Rocca, Fabio; Ruiz Rodon, Josep; Tebaldini, Stefano (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We propose an efficient method for the azimuth compression and Atmospheric Phase Screen estimation of Geosynchronous SAR data. The method is based on the iterative processing of sub-apertures of increasing size, allowing ...
  • An efficient multi-scale method for non-linear analysis of composite structures 

    Otero Gruer, Fermín Enrique; Martínez García, Javier; Oller Martínez, Sergio Horacio; Salomon Rotlisbeger, Ramon Omar (2015-11-01)
    Article
    Accés obert
    The use of multi-scale procedures is encouraged by the continuous increase of computational capacity, but it is still a challenge performing a non-linear analysis of real composite structures without the aid of large ...
  • An Efficient representation for sparse graphs 

    Valiente Feruglio, Gabriel Alejandro (2002-02)
    Report de recerca
    Accés obert
    The design of efficient graph algorithms usually precludes the test of edge existence, because an efficient support of that operation already requires time (n^2) for the initialization of an adjacency-matrix representation. ...
  • An efficient solver for Cache Miss Equations 

    Bermudo, Nerina; Vera Rivera, Francisco Javier; González Colás, Antonio María; Llosa Espuny, José Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
    Accés obert
    Cache Miss Equations (CME) (S. Ghosh et al., 1997) is a method that accurately describes the cache behavior by means of polyhedra. Even though the computation cost of generating CME is a linear function of the number of ...
  • An efficient spectral code for incompressible flows in cylindrical geometries 

    Mercader Calvo, María Isabel; Batiste Boleda, Oriol; Alonso Maleta, María Aránzazu (2010-02)
    Article
    Accés restringit per política de l'editorial
    An efficient and accurate numerical scheme is proposed to solve the incompressible Navier–Stokes equations in a bounded cylinder. The scheme is based on a projection method formulated in primitive variables to maintain the ...
  • An efficient technique of texture representation in segmentation-based image coding schemes 

    Torres Urgell, Lluís; Casas Pla, Josep Ramon; Campins, J (IEEE IEEE, 1995)
    Text en actes de congrés
    Accés obert
    In segmentation-based image coding techniques the image to be compressed is first segmented. Then, the information is coded describing the shape and the interior of the regions. A new method to encode the texture obtained ...
  • An eigenvalue characterization of antipodal distance-regular graphs 

    Fiol Mora, Miquel Àngel (1997-11)
    Article
    Accés obert
    Let $\Gamma$ be a regular (connected) graph with $n$ vertices and $d+1$ distinct eigenvalues. As a main result, it is shown that $\Gamma$ is an $r$-antipodal distance-regular graph if and only if the distance graph $\Gamma_d$ ...
  • An Eigenvector pattern arising in non linear regression 

    Cuadras, C.M. (Carlos Maria) (Universitat Politècnica de Catalunya. Centre de Càlcul, 1990)
    Article
    Accés obert
    Let A = (aij) be an n x n matrix defined by aij = aji = i, i = 1,...,n. This paper gives some elementary properties of A and other related matrices. The eigenstructure of A is conjectured: given an eigenvector v of A the ...
  • An elastic plastic damage formulation for concrete: application to elementary and structural tests 

    Jason, L; Huerta, Antonio; Pijaudier-Cabot, Gilles; Ghavamian, S (2006-11)
    Article
    Accés obert
    Pure elastic damage models or pure elastic plastic constitutive laws are not totally satisfactory to describe the behaviour of concrete. They indeed fail to reproduce the unloading slopes during cyclic loading which define ...
  • An elastoplastic model for the THM analysis of freezing soils 

    Satoshi, Nishimura; Gens Solé, Antonio; Olivella Pastallé, Sebastià; Jardine, Richard (2009)
    Text en actes de congrés
    Accés obert
    By employing a combination of ice pressure, liquid pressure and total stress as state variables, a new thermoplastic constitutive model has been developed that encompasses frozen and unfrozen behaviour within a unified ...
  • An Electric taxi fleet charged by second use batteries: not just economic profit 

    Canals Casals, Lluc; Amante García, Beatriz (Emerald Group Publishing, 2013-07-15)
    Article
    Accés restringit per política de l'editorial
    The road transport sector is the second biggest CO2 emissions contributor after energy generation. In urban environments, its impact is increased due to the worse combustion engine driving efficiency. It is thought that ...
  • An Electric taxi fleet charging system using second life electric car batteries simulation and economical approach 

    Canals Casals, Lluc; Amante García, Beatriz (Publicaciones de la Universidad de Valladolid, 2013)
    Text en actes de congrés
    Accés obert
    The industrial car manufacturers see in the high battery price an im-portant obstacle for an electric vehicle mass selling, thus mass production. There-fore, in order to find some cost relieves and better selling opportunities, ...
  • An electromagnetic interference reduction check list for unmanned aircraft system 

    Tristancho Martínez, Joshua; Quílez Figuerola, Marcos; Pastor Llorens, Enric (2010)
    Text en actes de congrés
    Accés restringit per política de l'editorial