Ara es mostren els items 3829-3848 de 97618

  • A two-dimensional architecture for end-to-end resource management in virtual network environments 

    Wang, Ning; Zhang, Yi; Serrat Fernández, Juan; Gorricho Moreno, Juan Luis; Guo, Tao; Hu, Zheng; Zhang, Ping (2012-09)
    Article
    Accés restringit per política de l'editorial
    In recent years, various network virtualization techniques have been proposed for flexibly supporting heterogeneous services over virtual network platforms. However, systematic views on how virtual network resources (VNRs) ...
  • A two-dimensional Doppler-Radiometer for Earth observation 

    Camps Carmona, Adriano José; Swift, C T (IEEE Piscataway, 2000)
    Text en actes de congrés
    Accés obert
    Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be ...
  • A two-dimensional doppler-radiometer for earth observation 

    Camps Carmona, Adriano José; Swift, Calvin T. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-07-31)
    Article
    Accés obert
    Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be ...
  • A two-resonance tapping cavity for an optimal light trapping in thin-film solar cells 

    Liu, Quan; Romero Gómez, Pablo; Mantilla Perez, Paola; Colodrero, Silvia; Toudert, Johann; Martorell Pena, Jordi (2017-09-20)
    Article
    Accés restringit per política de l'editorial
    An optimal photon absorption in thin film photovoltaic technologies can only be reached by effectively trapping the light in the absorber layer provided a considerable portion of the photons is rejected or scattered out ...
  • A two-scale constitutive parameters identification procedure for elasto-plastic fracture 

    Carollo, Valerio; Borri, Claudia; Paggi, Marco (CIMNE, 2015)
    Comunicació de congrés
    Accés obert
    Constitutive parameters identification for elasto-plastic fracture is a complex problem due to the interplay between two forms of material nonlinearity, viz. plasticity and cohesive fracture. In the present study we examine ...
  • A two-scale failure model for heterogeneous materials: numerical implementation based on the finite element method 

    Toro, Sebastian; Sánchez, Pablo J.; Huespe, Alfredo Edmundo; Giusti, Sebastian Miguel; Blanco, Pedro J.; Feijóo, R.A. (John Wiley & Sons, 2014-02)
    Article
    Accés obert
    In the first part of this contribution, a brief theoretical revision of the mechanical and variational foundations of a Failure-Oriented Multiscale Formulation (FOMF) devised for modeling failure in heterogeneous materials ...
  • A two-step approach for estimating pedestrian demand in a congested network 

    Rojas Lombarte, Eduard (Universitat Politècnica de Catalunya, 2014-07-25)
    Treball Final de Grau
    Accés obert
    [ANGLÈS] In the framework of PedFlux, a long-term research project jointly carried out by the Swiss Federal Railways (SBB) and EPFL, pedestrian ow patterns arising in complex train stations are investigated. For this ...
  • A two-step monolithic method for efficient simulation of incompressible flows 

    Ryzhakov, Pavel; Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio (2014-04)
    Article
    Accés restringit per política de l'editorial
    We propose a simple technique for improving computational the e ciency of monolithic velocity-pressure solvers for incompressible ow problems. The idea consists in solving the discrete non-linear system of governing ...
  • A two-step monolithic method for the efficient simulation of incompressible flows 

    Ryzhakov, Pavel; Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio (2014-01)
    Article
    Accés restringit per política de l'editorial
    We propose a simple technique for improving computationally the efficiency of monolithic velocity–pressure solvers for incompressible flow problems. The idea consists in solving the discrete nonlinear system of governing ...
  • A two-tiered methodology for metamodel extension applied to UML 1.4 

    Franch Gutiérrez, Javier; Ribó, Josep M. (2004-11)
    Report de recerca
    Accés obert
    The usage of UML in specific contexts (like real-time systems or process modelling) is specially appealing since it provides a standard modelling notation widely used by the software engineering community. However, such ...
  • A Two-tiered methodology to extend the UML metamodel 

    Ribó, Josep M.; Franch Gutiérrez, Javier (2002-07-01)
    Report de recerca
    Accés obert
    The usage of UML in specific contexts (like real-time systems or process modelling) is specially appealing since it provides a standard modelling notation widely used by the software engineering community. However, suchusage ...
  • A type-theoretic approach to proof support for algebraic design frameworks 

    Mylonakis Pascual, Nicos (Universitat Politècnica de Catalunya, 2000-06-30)
    Tesi
    Accés obert
    A TYPE -THEORETIC APPROACH TO PROOF SUPPORT FOR ALGEBRAIC <br/> DESIGN FRAMEWORKS<br/><br/><br/> En el desarrollo formal de software, ...
  • A unified analytical model for characterization of cable faults in VSC DC systems 

    Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015)
    Text en actes de congrés
    Accés obert
  • A unified approach for measuring precision and generalization based on anti-alignments 

    Dongen, Boudewijn van; Carmona Vargas, Josep; Chatain, Thomas (Springer, 2016)
    Text en actes de congrés
    Accés obert
    The holy grail in process mining is an algorithm that, given an event log, produces fitting, precise, properly generalizing and simple process models. While there is consensus on the existence of solid metrics for fitness ...
  • A unified approach for the identification of SISO/MIMO Wiener and Hammerstein systems 

    Ikhouane, Fayçal; Giri, F. (2012)
    Comunicació de congrés
    Accés obert
    Hammerstein and Wiener models are nonlinear representations of systems composed by the coupling of a static nonlinearity N and a linear system L in the form N-L and L-N respectively. These models can represent real ...
  • A unified approach to authorship attribution and verification 

    Puig Oriol, Xavier; Font Valverde, Martí; Ginebra Molins, Josep (2016)
    Article
    Accés obert
    In authorship attribution, one assigns texts from an unknown author to either one of two or more candidate authors by comparing the disputed texts with texts known to have been written by the candidate authors. In authorship ...
  • A Unified approach to concurrent and parallel algorithms on balanced data structures 

    Gabarró Vallès, Joaquim; Messeguer Peypoch, Xavier (1997-07)
    Report de recerca
    Accés obert
    Concurrent and parallel algorithms are different. However, in the case of dictionaries, both kinds of algorithms share many common points. We present a unified approach emphasizing these points. It is based on a careful ...
  • A unified approach to explain contrary effects of hysteresis and smoothing in nonsmooth systems 

    Bonet Revés, Carles; Martínez-Seara Alonso, M. Teresa; Fossas Colet, Enric; Jeffrey, Mike R. (2017-09-01)
    Article
    Accés restringit per política de l'editorial
    Piecewise smooth dynamical systems make use of discontinuities to model switching between regions of smooth evolution. This introduces an ambiguity in prescribing dynamics at the discontinuity: should the dynamics be given ...
  • A Unified approach to natural language treatment 

    Alvarez Canal, Jordi (1998-02)
    Report de recerca
    Accés obert
    This paper proposes a learning-based methodology to deal with Natural Language. Our system tries to acquire a knowledge model from an analyzed text. After that, a new text can be analyzed by using that model. The methodology ...
  • A unified approach to remeshing strategies for finite element h-adaptativity 

    Díez, Pedro; Huerta, Antonio (1999-07)
    Article
    Accés obert
    In h-adaptivity, a remeshing strategy is needed to compute the distribution of required element size using the estimated error distribution. Several authors have introduced different remeshing strategies yielding very ...