Ara es mostren els items 1733-1752 de 87760

  • A FIC-based stabilized finite element formulation for turbulent flows 

    Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio (2016-11-21)
    Article
    Accés obert
    We present a new stabilized finite element (FEM) formulation for incompressible flows based on the Finite Increment Calculus (FIC) framework. In comparison to existing FIC approaches for fluids, this formulation involves ...
  • A FIC-based stabilized mixed finite element method with equal order interpolation for solid–pore fluid interaction problems 

    Pouplana Sarda, Ignasi de; Oñate Ibáñez de Navarra, Eugenio (2017-01)
    Article
    Accés restringit per política de l'editorial
    A new mixed displacement-pressure element for solving solid–pore fluid interaction problems is presented. In the resulting coupled system of equations, the balance of momentum equation remains unaltered, while the mass ...
  • A field investigation of flight anxiety: evidence of gender differences in consumer behaviors among Las Vegas passengers 

    Harvell, Lindsey A.; Stillman, Tyler; Nisbett, Gwendelyn S.; Cranney, Kyle; Schow, Amber (Omnia Science, 2016-06)
    Article
    Accés obert
    Purpose: This study examines how anxious the Las Vegas public is through a case study of one local international airport. Design/methodology: This study examines gender differences in consumer behaviors among the flying ...
  • A field study on satellite and cellular 

    Gete-Alonso Roldan, Oscar; Martín Escalona, Israel; Barceló Arroyo, Francisco (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This article presents a statistical study on the availability of location sources. In particular, it rates the availability of cellular network base stations and GPS satellites in urban scenarios. Individual and joint ...
  • A field study on the fusion of terrestrial and satellite location methods in urban cellular networks 

    Barceló Arroyo, Francisco; Martín Escalona, Israel; Manente, Cyrille (2010-05-01)
    Article
    Accés restringit per política de l'editorial
    This work studies the improvement in service coverage obtained by three different approaches to combining two triangulation (terrestrial and satellite) location methods for cellular networks in an urban environment. The ...
  • A field study with primary school children on perception of social presence and interactive behavior with a pet robot 

    Heerink, Marcel; Díaz Boladeras, Marta; Albo-Canals, Jordi; Angulo Bahón, Cecilio; Barco, Alex; Casacuberta Bagó, Judit; Garriga Berga, Carles (2012)
    Comunicació de congrés
    Accés obert
    This paper presents a study on measuring (1) how children experience a pet robot, (2) how they play with it and (3) how children’s perceptions on and interaction with pet robots are interrelated. The study features different ...
  • A field test of a linear stability model for crescentic bars 

    Tiessen, M.C.H.; Leeuwen, S.M.Van; Calvete Manrique, Daniel; Dodd, Nicholas (2010-01)
    Article
    Accés restringit per política de l'editorial
    A morphodynamical linear stability analysis is used to predict the natural development of crescentic bed patterns and rip channels. The purpose is to investigate whether this technique, which is useful for understanding ...
  • A figure-of-merit for pattern reconfigurable antennas 

    Rodrigo López, Daniel; Romeu Robert, Jordi; Capdevila Cascante, Santiago; Jofre Roca, Lluís (2013-03)
    Article
    Accés restringit per política de l'editorial
    The performance of pattern reconfigurable antennas is evaluated with the purpose of deriving a figure-of-merit for pattern reconfigurability. A general formulation is provided for the average gain achieved by a ...
  • A filtered kinetic energy preserving finite volumes scheme for compressible flows 

    Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2012)
    Text en actes de congrés
    Accés obert
    The Kinetic Energy Preserving Scheme (KEP) for compressible flows has been shown to solve 1-D shock waves without smearing them. The method does not add numerical diffusion to solutions but, as a counterpart, it needs ...
  • A filtering engine for large conceptual schemas 

    Villegas Niño, Antonio (Universitat Politècnica de Catalunya, 2013-01-29)
    Tesi
    Accés obert
  • A finite deformation membrane based on inter-atomic potentials for the transverse mechanics of nanotubes 

    Arroyo Balaguer, Marino; Belytschko, T. (2003-03)
    Article
    Accés obert
    A finite deformation hyper-elastic membrane theory based on inter-atomic potentials for crystalline films composed of a single atomic layer is developed. For this purpose, an extension of the standard Born rule that exploits ...
  • A finite difference based tool for analysing ground source heat pump system 

    Bag, Ramakrishna; Sedighi, Majid; Manju; Rhys Thomas, Hywel (Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica, 2015-06-02)
    Text en actes de congrés
    Accés obert
    The ground heat exchangers (GHE) consist of pipes buried in the soil and are used for transferring heat between the soil and the heat exchanger pipes of the ground source heat pump (GSHP). This paper presents the development ...
  • A finite element approach to the simulation of hydraulic fractures with lag 

    Hunsweck, Michael J.; Shen, Yongxing; Lew, Adrian J. (2013)
    Article
    Accés obert
    We presented a finite-element-based algorithm to simulate plane-strain, straight hydraulic fractures in an impermeable elastic medium. The algorithm acCOllllts for the nonlinear coupling between the fluid pressure and the ...
  • A Finite Element Model for Free Surface and Two Fluid Flows on Fixed Meshes 

    Coppola Owen, Herbert (Universitat Politècnica de Catalunya, 2009-06-19)
    Tesi
    Accés obert
    Los flujos con interfaces móviles (problemas de superficie libres y de dos fluidos) aparecen en numerosas aplicaciones de ingeniería. Los métodos presentados en esta tesis están orientados principalmente a la simulación ...
  • A finite Element model for incompressible flow problems 

    Codina, Ramon (Universitat Politècnica de Catalunya, 1992-06-30)
    Tesi
    Accés obert
  • A finite element strategy coupling a gradient-enhanced damage model and cohesive cracks for quasi-brittle materials 

    Tamayo Mas, Elena; Rodríguez Ferran, Antonio (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    A new combined strategy to describe failure of quasi-brittle materials is presented thus allowing the complete description of the process, from initiation of damage to crack propagation. For the early stages of the process, ...
  • A finite point method for adaptive-three-dimensional compressible flow calculations 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2009-07-30)
    Article
    Accés obert
    The finite point method (FPM) is a meshless technique, which is based on both, a weighted least-squares numerical approximation on local clouds of points and a collocation technique which allows obtaining the discrete ...
  • A finite thickness band method for ductile fracture analysis 

    Huespe, Alfredo Edmundo; Needleman, Alan; Oliver Olivella, Xavier; Sánchez, Pedro José (2009)
    Article
    Accés obert
    We present a finite element method with a finite thickness embedded weak discontinuity to analyze ductile fracture problems. The formulation is restricted to small geometry changes. The material response is characterized ...
  • A finite-volume/level-set method for simulating two-phase flows on unstructured grids 

    Balcázar Arciniega, Néstor; Jofre Cruanyes, Lluís; Lehmkuhl Barba, Oriol; Castro González, Jesús; Rigola Serrano, Joaquim (2014-09)
    Article
    Accés restringit per política de l'editorial
    The conservative level-set method for capturing the interface between two fluids is combined with a variable density projection scheme to simulate incompressible two-phase flows on unstructured meshes. All equations are ...
  • A first approach to the multipurpose relational database server 

    Blanco, Ignacio J.; Martínez-Cruz, Carmen; Serrano Chica, José María; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
    Article
    Accés obert
    In this paper, an architecture and an implementation of a multipurpose relational database server are proposed. This architecture enables classical queries to be executed, deductions to be made, and data mining operations to ...