Ara es mostren els items 1954-1973 de 84411

  • A la sombra del dolmen: acerca de la arquitectura de Paulo Mendes da Rocha 

    Mayol Amengual, Jaume (Departament de Projectes Arquitectònics. UPC, 2014)
    Article
    Accés obert
    Si aceptamos que uno de los fines fundacionales de la arquitectura es dar cobijo, estaremos de acuerdo en que uno de los gestos fundacionales fue sostener un elemento horizontal sobre un número mínimo de soportes. Este ...
  • A laminated structural finite element for the behavior of large non-linear reinforced concrete structures 

    Escudero Torres, Cuauhtemoc; Oller Martínez, Sergio Horacio; Martínez García, Javier; Barbat Barbat, Horia Alejandro (2016-10)
    Article
    Accés restringit per política de l'editorial
    In order to correctly predict the kinematics of complex structures, analysis using three-dimensional finite elements (3DFEs) seems to be the best alternative. However, simulation of large multi-layered structures with many ...
  • A Language for constructive parametric solid modelling 

    Solano Albajés, Lluís; Brunet Crosa, Pere (1994-10)
    Report de recerca
    Accés obert
    The report discusses proposed solutions for constraint-based modelling, with special emphasis on constructive approaches. A new constructive scheme that overcomes a number of the present limitations is proposed. It is based ...
  • A language for expressing fuzzy temporal rules 

    Cariñena Amigo, Purificación; Bugarín Diz, Alberto José; Mucientes, Manuel; Barro Ameneiro, D. Senén (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
    Article
    Accés obert
    This paper deals with the formal description of what we call Fuzzy Temporal Propositions: propositions with explicitly expressed information of a temporal type. The set of syntactic rules that make a grammar up for defining ...
  • A large signal nonlinear MODFET model from small signal S-parameters 

    O'Callaghan Castellà, Juan Manuel; Beyer, Jb (1989)
    Text en actes de congrés
    Accés obert
    A general technique for predicting the MODFET large signal performance has been developed. The technique is based entirely on experimental data (small signal S-parameters at different biased points) and therefore is ...
  • A large signal nonlinear MODFET model from small signal S-parameters 

    O'Callaghan Castellà, Juan Manuel; Beyer, James B. (Institute of Electrical and Electronics Engineers (IEEE), 1989)
    Text en actes de congrés
    Accés obert
    A general technique for predicting the MODFET large signal performance has been developed. The technique is based entirely on experimental data (small signal S-parameters at different biased points) and therefore is ...
  • A large-scale spiking neural networks emulation architecture 

    Pirrone, Vito (Universitat Politècnica de Catalunya, 2014-09-09)
    Projecte Final de Màster Oficial
    Accés obert
    The purpose of this work is to design a new version (called SNAVA+) of the architecture SNAVA, an SNN hardware emulator implemented on a XilinX Kintex-7 FPGA. SNAVA+ increases the capabilities of SNAVA in order to have a ...
  • A latent variable ranking model for content-based retrieval 

    Quattoni, Ariadna Julieta; Carreras Pérez, Xavier; Torralba, Antonio (Springer, 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Since their introduction, ranking SVM models have become a powerful tool for training content-based retrieval systems. All we need for training a model are retrieval examples in the form of triplet constraints, i.e. examples ...
  • A Lattice Representation of Relations, Multivalued Dependencies and Armstrong Relations 

    Baixeries i Juvillà, Jaume; Balcázar Navarro, José Luis (2005)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We present a lattice-base formalism to relate, in a novel way, different representation methods for relational data. Specifically, relations given extensionally by tuples, multivalued dependencies, and Armstrong relations ...
  • A lattice-based method for structural analysis 

    Casas Garriga, Gemma; Díaz López, Pablo; Balcázar Navarro, José Luis (2005-09)
    Report de recerca
    Accés obert
    In this paper we revisit the foundations of formal concept analysis for ordered contexts of [4]. From the theoretical point of view, the obtained lattice has proved to be a proper unifying framework for reasoning about ...
  • A law of word meaning in dolphin whistle types 

    Ferrer Cancho, Ramon; McCowan, Brenda (2009-10-30)
    Article
    Accés obert
    We show that dolphin whistle types tend to be used in specific behavioral contexts, which is consistent with the hypothesis that dolphin whistle have some sort of “meaning”. Besides, in some cases, it can be shown that the ...
  • A layered approach to managing risks in OSS projects 

    Franch Gutiérrez, Javier; Kenett, Ron; Mancinelli, Fabio; Susi, Angelo; Ameller, David; Ben-Jacob, Ron; Siena, Alberto (Springer, 2014)
    Text en actes de congrés
    Accés obert
    In this paper, we propose a layered approach to managing risks in OSS projects. We define three layers: the first one for defining risk drivers by collecting and summarising available data from different data sources, ...
  • A les ones: com estimular l’escolta de la ràdio entre el jovent 

    Ortega i Puig, Eva (Universitat Politècnica de Catalunya, 2010-07)
    Projecte Final de Màster Oficial
    Accés restringit per acord de confidencialitat
    El projecte consisteix en una sèrie de propostes d'activitats que tenen com a principal objectiu impulsar l'escolta de ràdio, concretament, generalista. El públic a qui van dirigides són els estudiants de 1r curs del ...
  • A level-set aided single-phase model for the numerical simulation of free-surface flow on unstructured meshes 

    Schillaci, Eugenio; Jofre Cruanyes, Lluís; Balcázar Arciniega, Néstor; Lehmkuhl, Oriol; Oliva Llena, Asensio (Elsevier, 2016-11-25)
    Article
    Accés restringit per política de l'editorial
    A new single-phase scheme for the numerical simulation of free-surface problems on 3-D unstructured meshes is presented. The flow field is obtained from the discrete solution of the incompressible Navier-Stokes equations, ...
  • A level-set method for thermal motion of bubbles and droplets 

    Balcázar Arciniega, Néstor; Oliva Llena, Asensio; Rigola Serrano, Joaquim (Institute of Physics (IOP), 2016)
    Text en actes de congrés
    Accés obert
    A conservative level-set model for direct simulation of two-phase flows with thermocapillary effects at dynamically deformable interface is presented. The Navier-Stokes equations coupled with the energy conservation equation ...
  • A life cycle approach to assess the environmental and economic benefits of remanufacturing wheelset bearings in the rail vehicle industry 

    Fernández Sunyer, Tekij (Universitat Politècnica de Catalunya, 2013-01)
    Projecte/Treball Final de Carrera
    Accés obert
    Rail vehicles’ wheelset bearings have to be replaced periodically as they reach the end of their operational life, so that the vehicles’ availability, reliability and safety can be maximised. There are two maintenance ...
  • A lightweight algorithm for traffic filtering over sliding windows 

    Sanjuàs Cuxart, Josep; Barlet Ros, Pere; Solé Pareta, Josep; Andriuzzi, Gabriella (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The problem of testing whether a packet belongs to a set of filtered addresses has been traditionally addressed using Bloom filters. They have a small memory footprint and require few memory accesses per query and insertion, ...
  • A linear approach for multiple-point impact in multibody systems 

    Agulló Batlle, Joaquim; Barjau Condomines, Ana; Font Llagunes, Josep Maria (2011)
    Comunicació de congrés
    Accés obert
  • A linear relaxation method for computing workspace slices of the Stewart platform 

    Bohigas Nadal, Oriol; Manubens Ferriol, Montserrat; Ros Giralt, Lluís (ASME PRESS, 2013)
    Article
    Accés restringit per política de l'editorial
    The workspace of a Stewart platform is a complex sixdimensional volume embedded in the Cartesian space defined by six pose parameters. Because of its large dimension and complex shape, this volume is difficult to compute ...
  • A linear relaxation technique for the position analysis of multi-loop linkages 

    Porta Pleite, Josep Maria; Ros Giralt, Lluís; Thomas, Federico (2008)
    Report de recerca
    Accés obert
    This report presents a new method able to isolate all configurations that a multi-loop linkage can adopt. We tackle the problem by providing formulation and resolution techniques that fit particularly well together. The ...