Ara es mostren els items 32-46 de 46

    • Quality of transmission estimator retraining for dynamic optimization in optical networks 

      Mahajan, Ankush; Christodoulopoulos, Konstantinos; Martínez Rivera, Ricardo Victor; Muñoz González, Raül; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2021-04-01)
      Article
      Accés obert
      Optical network optimization involves an algorithm and a physical layer model (PLM) to estimate the quality of transmission of connections while examining candidate optimization operations. In particular, the algorithm ...
    • Quantitative images of large biological bodies in microwave tomography by using numerical and real data 

      Mallorquí Franquet, Jordi Joan; Joachimowicz, N.; Broquetas Ibars, Antoni; Bolomey, J. C. (Jean-Charles) (IEE-INST ELEC ENG, 1996-11-01)
      Article
      Accés obert
      A new inverse microwave imaging algorithm is presented which has the ability to obtain quantitative dielectric maps of large biological bodies. By using a priori information, obtained with a first order algorithm, the final ...
    • Reduction of the model noise in non-linear reconstruction via an efficient calculation of the incident field: application to a 434 MHz Scanner 

      Geffrin, J M; Mallorquí Franquet, Jordi Joan; Joachimowicz, N; Redondo, R; Vall·Llossera, M; Vall-Llossera Ferran, Mercedes Magdalena; Franza, Joisel A; Bolomey, Jean Charles (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      Microwave tomography has been drastically boosted by the development of efficient reconstruction algorithms based on an iterative solution of the corresponding non-linear inverse problem. The accuracy of the electric field ...
    • Robust motion estimation using connected operators 

      Salembier Clairon, Philippe Jean; Sanson, H (Institute of Electrical and Electronics Engineers (IEEE), 1997)
      Text en actes de congrés
      Accés obert
      This paper discusses the use of connected operators for robust motion estimation The proposed strategy involves a motion estimation step extracting the dominant motion and a ltering step relying on connected operators ...
    • Second-order parameter estimation 

      Villares Piera, Nemesio Javier; Vázquez Grau, Gregorio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-07-31)
      Article
      Accés obert
      This work provides a general framework for the design of second-order blind estimators without adopting any approximation about the observation statistics or the a priori distribution of the parameters. The proposed ...
    • Self-similar prefractal frequency selective surfaces for multiband and dual-polarized applications 

      Gianvittorio, John P.; Romeu Robert, Jordi; Blanch Boris, Sebastián; Rahmat-Samii, Yahya (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-01-31)
      Article
      Accés obert
      Frequency-selective surfaces (FSS) that have been designed using the iterative techniques of fractals have been fabricated and measured. Fractals contain many scales of the starting geometry, each of which acts as a ...
    • Spectral iterative algorithm for RCS computation in electrically large or intermediate perfectly conducting cavities 

      Rius Casals, Juan Manuel; Lozano Solsona, Angel; Cardama Aznar, Ángel; Jofre Roca, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-06-01)
      Article
      Accés obert
      A novel algorithm designed to compute efficiently and accurately the high-frequency electromagnetic scattering from open-ended waveguide cavities is presented. The cavity is converted into a stepped-waveguide model so that ...
    • SSFB: a highly-efficient and scalable simulation reduction technique for SRAM yield analysis 

      Rana, Manish; Canal Corretger, Ramon (European Interactive Digital Advertising Alliance (EDAA), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Estimating extremely low SRAM failure-probabilities by conventional Monte Carlo (MC) approach requires hundreds-of-thousands simulations making it an impractical approach. To alleviate this problem, failure-probability ...
    • Study of Kyrlov methods for topology optimization 

      Ruíz Celada, Pol (Universitat Politècnica de Catalunya, 2023-07-17)
      Treball Final de Grau
      Accés obert
      Topology optimization (TOPOPT) focuses on optimizing the mass distribution of a given design space whilst maintaining certain structural properties. In aerospace engineering, the structural design process is often steered ...
    • Subset selection for multi-Gabor and non-orthogonal wavelets expansions 

      Rebollo-Neira, L; Fernández Rubio, Juan Antonio; Janer, L (IEEE Signal Processing Society, 1998)
      Text en actes de congrés
      Accés obert
      Non-orthogonal wavelets and Gabor or multi-windows Gabor expansions involving well-localized synthesis/analysis functions are characterized by being redundant. This entails that the signal modeling is carried out through ...
    • The Hardy Cross method and its implementation in Spain 

      Pons Poblet, Josep Maria (2020-05-01)
      Article
      Accés obert
      In May 1930, Hardy Cross (1885-1959) published an article called ‘Analysis of continuous frames by distributing fixed-end moments’ in the American Society of Civil Engineers (ASCE). This article proposed a new approach to ...
    • The Koch monopole: a small fractal antenna 

      Puente Baliarda, Carles; Romeu Robert, Jordi; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-11)
      Article
      Accés obert
      Fractal objects have some unique geometrical properties. One of them is the possibility to enclose in a finite area an infinitely long curve. The resulting curve is highly convoluted being nowhere differentiable. One such ...
    • Trajectory estimation using an iterative method 

      Torres Ventura, Adrià (Universitat Politècnica de Catalunya, 2016-07-14)
      Treball Final de Grau
      Accés obert
      The objective of the present TFG is to analyze, using different models, how the traffic flow in a freeway is affected by the implementation of VSL zones, ramp metering, HOV lanes or others.
    • Unveiling internal evolution of parallel application computation phases 

      Servat, Harald; Llort Sánchez, Germán; Giménez Lucas, Judit; Huck, Kevin A.; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      As access to supercomputing resources is becoming more and more commonplace, performance analysis tools are gaining importance in order to decrease the gap between the application performance and the supercomputers' peak ...
    • Use of the most significant autocorrelation lags in iterative me spectral estimation 

      Lagunas Hernandez, Miguel A. (1984-04)
      Article
      Accés obert