Ara es mostren els items 5519-5538 de 84252

  • An imaging algorithm for synthetic aperture interferometric radiometers with built-in RFI mitigation 

    Camps Carmona, Adriano José; Hyuk, Park; González Gambau, Veronica (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Radio Frequency Interference (RFI) is probably one of the most important limiting factors in the accuracy of the brightness temperatures measured by microwave radiometers. Due to the proximity of the 'protected' L-band ...
  • An impacting energy harvester through piezoelectric device for oscillating water flow 

    Toma, Daniel Mihail; Carbonell Ventura, Montserrat; Pujol Bresco, David; Manuel Lázaro, Antonio; Miquel Masalles, Jaume (2013)
    Text en actes de congrés
    Accés obert
    The reduced power requirements of miniaturized electronics offers the opportunity to create devices having their power supply based on energy harvesters. In this paper a new idea is proposed and studied to supply underwater ...
  • An impacting energy harvester through piezoelectric device for velocity water flow 

    Toma, Daniel; Carbonell Ventura, Montserrat; Pujol Bresco, David; Mànuel, Antoni; Miquel, Jaume (SARTI, 2013)
    Comunicació de congrés
    Accés obert
  • An implementation of a generic memetic algorithm for the edge biconnectivity augmentation problem 

    Xhafa Xhafa, Fatos (2003-11)
    Report de recerca
    Accés obert
    In this paper we present an implementation of a generic memetic algorithm for the edge bi-connectivity augmentation problem --the problem of augmenting a given graph by a cheapest possible set of additional edges in order ...
  • An implementation of a Multi-model predictor based on the qualitative and quantitative decomposition of the Time-series 

    López Frías, Rodrigo; Puig Cayuela, Vicenç; Rodríguez Rangel, Héctor (Universidad de Granada, 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, an implementation of a Multi-Model Predictor architecture based on a framework composed by modules is proposed. The modules interacts among them to detect and activate forecasting modes given the input data ...
  • An implementation of the QR factorization for solving overdetermined systems of linear equations 

    Escudero, L. F. (Universitat Politècnica de Barcelona. Centre de Càlcul, 1980-06)
    Article
    Accés obert
    Different procedures for solving an overdetermined system of linear equations are revisited and new technical details in its computer implementations are described. The new procedures produce more stable solutions than the ...
  • An implicit finite-element model for 3D non-hydrostatic mesoscale ocean flows 

    Maidana, Manuel Augusto; Blasco Lorente, Jorge; Espino Infantes, Manuel (2004)
    Article
    Accés obert
    We present in this paper a pressure stabilized, finite element method for the numerical approximation of three-dimensional, non-hydrostatic mesoscale ocean flows. The model considered here incorporates surface wind ...
  • An implicit stabilized finite element method for the compressible Navier-Stokes equations using finite calculus 

    Kouhi Esfahani, Mohammad; Oñate Ibáñez de Navarra, Eugenio (2015-07)
    Article
    Accés restringit per política de l'editorial
    A new implicit stabilized formulation for the numerical solution of the compressible Navier-Stokes equations is presented. The method is based on the finite calculus (FIC) scheme using the Galerkin finite element method ...
  • An improved algorithm to smooth graded quadrilateral meshes preserving the prescribed element size 

    Sarrate Ramos, Josep; Huerta, Antonio (2001-02)
    Article
    Accés obert
    In the generation of quadrilateral unstructured meshes, special attention is focussed to the shape of the elements. This is because it is well known that the distortion of the elements and the accuracy of the analysis are ...
  • An improved boundary extraction algorithm using a plane-sweep technique 

    Ayala Vallespí, M. Dolors; Vergara, Enric (2006-06)
    Report de recerca
    Accés obert
    Extracting the boundary of a 3D or a 2D image is a fundamental operation in several image processing related fields. In other fields as NC-data generation, obtaining the cutting areas of sculptured surfaces can be performed ...
  • An improved buffer for bioelectric signals 

    Pallàs Areny, Ramon; Colominas i Balagué, Josep; Rosell Ferrer, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1989-04-01)
    Article
    Accés obert
    We propose an AC-coupled amplifier that offers a high in-put impedance, thus making it suitable for bioelectric signal amplifi- cation. We also present the necessary formulas for calculating its input impedance and transfer ...
  • An improved cohesive zone model for ductile dynamic crack propagation 

    Sagimon Buch, Marc (Universitat Politècnica de Catalunya / Technische Universiteit Delft, 2008)
    Projecte/Treball Final de Carrera
    Accés restringit per acord de confidencialitat
    Ductile dynamic crack propagation is a current field of research in aerospace industry. The damage created by an explosion in a flying airplane depends on the fracture behaviour of the fuselage materials. Thus the rate ...
  • An improved evaluation framework to support local level planning 

    Giné Garriga, Ricard; Jiménez Fernández de Palencia, Alejandro; Flores Baquero, Óscar; Pérez Foguet, Agustí (2013)
    Text en actes de congrés
    Accés obert
    Today, a vast proportion of people still lack a simple pit latrine and a source of safe drinking water. To help end this appalling state of affairs, there is a pressing need to provide policymakers with evidences in ...
  • An improved interference alignment scheme for frequency selective channels 

    Shen, Minqi; Host-Madsen, Anders; Vidal Manzano, José (2008)
    Text en actes de congrés
    Accés obert
    In this paper, the achievable rate of a K-user interference channel with single antenna at individual node is studied. Interference alignment and zero forcing are applied at the transmitter and receiver, respectively. ...
  • An Improved master theorem for divide-and-conquer recurrences 

    Roura Ferret, Salvador (1997-01)
    Report de recerca
    Accés obert
    We present a new master theorem for the study of divide-and-conquer recursive definitions, which improves the old one in several aspects. In particular, it provides more information, frees us from technicalities like ...
  • An improved maximum likelihood method for power spectral density estimation 

    Lagunas Hernandez, Miguel A.; Gasull Llampallas, Antoni (1984-02)
    Article
    Accés obert
  • An Improved system for modelling Spanish emissions: HERMESv2.0 

    Guevara Vilardell, Marc; Martínez Palau, Francesc; Arevalo Roa, Gustavo; Gassó Domingo, Santiago; Baldasano Recio, José María (2013-12)
    Article
    Accés restringit per política de l'editorial
    Emission models play a key role in the development of high-resolution air quality modelling systems AQMS.To minimise the uncertainty presented by these models,it is essential to match the highresolution requirements of ...
  • An improved TCF sequence for biobleaching kenaf pulp: influence of the hexenuronic acid content and the use of xylanase 

    Andreu Terrén, Glòria; Vidal Lluciá, Teresa (2014-01-01)
    Article
    Accés restringit per política de l'editorial
    Enzymatic delignification with laccase from Trametes villosa used in combination with chemical mediators (acetosyringone, acetovanillone and 1-hydroxybenzotriazole) to improve the totally chlorine-free (TCF) bleaching of ...
  • An improved X-FEM solution to ensure normal stress continuity for two-phase flow problems 

    Bozkus, Hayrullah Kerim (Universitat Politècnica de Catalunya, 2012-07-29)
    Projecte Final de Màster Oficial
    Accés obert
    In this thesis, starting from the foundations of the Theory of Classical Finite Elements Method, The basic principles of Extended Finite Elements Method (X-FEM) are Explained. Why X-FEM takes place in many applications in ...
  • An improvement of Ostrowski root-finding method 

    Grau Sánchez, Miguel; Díaz Barrero, José Luis (2006-02)
    Article
    Accés restringit per política de l'editorial
    An improvement to the iterative method based on the Ostrowski one to compute nonlinear equation solutions, which increases the local order of convergence is suggested. The adaptation of a strategy presented here gives a ...