Ara es mostren els items 1-20 de 427

  • AATR an ionospheric activity indicator specifically based on GNSS measurements 

    Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Rovira Garcia, Adrià; González Casado, Guillermo; Ibáñez Segura, Deimos; Orús Pérez, Raul (2018-03-01)
    Article
    Accés obert
    This work reviews an ionospheric activity indicator useful for identifying disturbed periods affecting the performance of Global Navigation Satellite System (GNSS). This index is based in the Along Arc TEC Rate (AATR) and ...
  • A bounded dynamic programming algorithm for the blocking flow shop problem 

    Bautista Valhondo, Joaquín; Cano Pérez, Alberto; Companys Pascual, Ramón; Ribas Vila, Immaculada (IEEE Computer Society Conference Publishing Services (CPS), 2011-04-11)
    Capítol de llibre
    Accés restringit per política de l'editorial
    We present some results attained with two variants of the bounded dynamic programming algorithm to solve the Fm|block|Cmax problem using as experimental data the wellknown Taillard instances. We have improved the best-known ...
  • A BRILS metaheuristic for non-smooth flow-shop problems with failure-risk costs 

    Ferrer Biosca, Alberto; Guimarans, Daniel; Ramalhino Lourenço, Helena; Juan Pérez, Ángel Alejandro (2016-02-01)
    Article
    Accés obert
    This paper analyzes a realistic variant of the Permutation Flow-Shop Problem (PFSP) by considering a non-smooth objective function that takes into account not only the traditional makespan cost but also failure-risk costs ...
  • A communication-based algorithm to avoid the human body effect on antennas 

    Martínez García, Javier (Universitat Politècnica de Catalunya, 2011-07-21)
    Projecte/Treball Final de Carrera
    Accés obert
    English: The aim of this project is to design and implement a simple and reliable system able to minimize the negative effect that users cause on the antenna performance of mobile devices when interacting with these. The ...
  • A comparative study of recommender algorithms for a gastronomic social network 

    Bermeo Quezada, Franz (Universitat Politècnica de Catalunya, 2015-07)
    Projecte Final de Màster Oficial
    Accés restringit per acord de confidencialitat
    The provision of new functionality in Onfan (onfan.com) has become a priority to improve the user's satisfaction. Here, we report an analysis of real user ratings on a set of recipes in order to judge the applicability and ...
  • A contribution on adaptive coding strategies over H.F. channels 

    Dalmau Royo, Jordi; Delgado Penin, José A. (1989)
    Text en actes de congrés
    Accés obert
    We present a coding scheme which makes use of adaptive coding techniques. Since we are concerned with the H,F, channel, suitable coding schemes are needed to combat diffuse errors [1], i. e, random and burst errors, ...
  • Active deep learning for medical imaging segmentation 

    Górriz Blanch, Marc (Universitat Politècnica de Catalunya, 2017)
    Treball Final de Grau
    Accés obert
    This thesis proposes a novel active learning framework capable to train effectively a convolutional neural network for semantic segmentation of medical imaging, with a limited amount of training labeled data. Our approach ...
  • Active learning in Crowdsourcing classification problems using Sampling Theory for graph signals 

    Maroto Morales, Javier Alejandro (Universitat Politècnica de Catalunya, 2017-05-15)
    Treball Final de Grau
    12 months embargo
  • Adaptació de l’algorisme de Clarke i Wright amb modificacions per a resoldre el Vehicle Routing Problem (VRP) al cas real de Coca-Cola Iberian Partners 

    Pàmies Morera, Marta (Universitat Politècnica de Catalunya, 2015-01)
    Treball Final de Grau
    Accés obert
    Realitzat a/amb:  Coca-Cola Iberian Partners
    El present Treball de Fi de Grau té com a objectiu estudiar l’algorisme de Clarke i Wright amb modificacions, que és un mètode heurístic per a resoldre el problema de rutes present en el món de la logística i la distribució, ...
  • Adaptation of some Assembly Line Balancing Heuristics to a Mixed-Model Case 

    Fernández Pérez, Alberto (Universitat Politècnica de Catalunya / Universiteit Gent, 2011)
    Projecte/Treball Final de Carrera
    Accés obert
    This Master Thesis propose to find the best heuristic solution for one of the types of Assembly Line Balancing Problem, the SALP-1, in a line that needs to produce different models of the same product (mixed-model). That ...
  • Adaptive filtrate: signal processing in the measurement of haemoglobin using non-invasive method. 

    Herruzo Lodeiro, Cristina (Universitat Politècnica de Catalunya, 2014-07-14)
    Projecte/Treball Final de Carrera
    Accés obert
    This project is part of another project which is currently running at the University of Limerick (Ireland) and who is objective is to measure the concentration of haemoglobin (Hb) in blood using a non-invasive optical ...
  • Adaptive spectrum estimation with linear constrains 

    Vázquez Grau, Gregorio; Vallverdú Bayés, Sisco (1988)
    Text en actes de congrés
    Accés obert
    A general constrained adaptive metbod is developed to be applied to the spectral estimation problem. The method presented can be used in a wide range of situatious, this is, we can get different estimators wíth it. The ...
  • Advanced Delivery System for 5G-enabled Photonic Networks 

    Gómez Gonzalvo, Alberto (Universitat Politècnica de Catalunya, 2014-05-21)
    Treball Final de Grau
    Accés obert
    Realitzat a/amb:  Danmarks tekniske universitet
    [ANGLÈS] The advent of mobile devices such as smartphones or tablets demanding high capacity services drives a solution for next generation wireless networks. Wireless and optical networks are converging to increase the ...
  • A formal analisys of the computational dynamics in GIGANTEC 

    Badr, Amr (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2001)
    Article
    Accés obert
    An evolutionary algorithm formalism has been forwarded in a previous research, and implemented in the system GIGANTEC: Genetic Induction for General Analytical Non-numeric Task Evolution Compiler [Bad98][Bad99]. A dynamical ...
  • A general adaptive algorithm for nonGaussian source separation without any constraint 

    Lagunas Hernandez, Miguel A. (1994)
    Text en actes de congrés
    Accés obert
    This paper deals with the blind source separation. The task consists in separating some independent and linearly mixed signals called sources. After some general remarks, the model is recalled and our approach based on the ...
  • A GRASP algorithm for quota sequences with minimum work overload and forced interruption of operations in a mixed-product assembly line 

    Bautista Valhondo, Joaquín; Alfaro Pozo, Rocío (Springer, 2018-03-13)
    Article
    Accés restringit per política de l'editorial
    We present a GRASP algorithm to solve a problem that involves the sequencing of mixed products in an assembly line. The objective of the problem is to obtain a manufacturing sequence of models that generates a minimum work ...
  • A GRASP-based algorithm for the optimised DIF allocation in the RINA network architecture 

    Keshavarz, Pegah (Universitat Politècnica de Catalunya, 2013-12-13)
    Projecte Final de Màster Oficial
    Accés obert
    [ANGLÈS] Reviewing the current internet and its problems and introducing the new architecture of internet RINA, and find a minimized cost route to allocate demands in the network by using the GRASP algorithm.
  • A hybrid evolutionary approach to intelligent system design 

    Badr, Amr; Farag, Ibrahim; Eid, Saad (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1999)
    Article
    Accés obert
    The problem of developing a general methodology for system design has always been demanding. For this purpose, an evolutionary algorithm, adapted with design-specific representation data structures is devised. The ...
  • A Jacobi-based algorithm for computing symmetric eigenvalues and eigenvectors in a two-dimensional mesh 

    Royo Vallés, María Dolores; Valero García, Miguel; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 1998)
    Text en actes de congrés
    Accés obert
    The paper proposes an algorithm for computing symmetric eigenvalues and eigenvectors that uses a one-sided Jacobi approach and is targeted to a multicomputer in which nodes can be arranged as a two-dimensional mesh with ...
  • A learning approach to the FOM problem 

    Romo Grau, Eudald (Universitat Politècnica de Catalunya, 2017-05)
    Treball Final de Grau
    Accés obert
    Hogan recently provided an heuristic technique called family of modes (FOM) to solve model predictive control (MPC) problems under hybrid constraints and underactuation. The goal of this study is to further develop this ...