Now showing items 5072-5091 of 77020

  • An improved interference alignment scheme for frequency selective channels 

    Shen, Minqi; Host-Madsen, Anders; Vidal Manzano, José (2008)
    Conference report
    Open Access
    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)
    External research report
    Open Access
    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
    Open Access
  • 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
    Restricted access - publisher's policy
    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
    Restricted access - publisher's policy
    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)
    Master thesis
    Open Access
    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
    Restricted access - publisher's policy
    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 ...
  • An in-band frequency agility modem imlemented with a DSP device 

    Dalmau, J; Delgado, J; Serrat Fernández, Juan; Valle Alarcón, Rafael (Institute of Electrical and Electronics Engineers (IEEE), 1989)
    Conference report
    Open Access
    The authors present a modem with in-band frequency agility that has been implemented with the TMS 32010 signal processor. A strategy based on embedded real-time channel estimation (RTCE) has been adopted to manage the ...
  • An in-operation planning tool architecture for flexgrid network re-optimization 

    Gifre Renom, Lluís; Castro Casales, Alberto; Ruiz Ramírez, Marc; Navarro, Nacho; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    In-operation network planning consists in re-optimizing a network, currently being operated to transport traffic, either minimizing resource utilization or maximizing the transported traffic. In the context of flexgrid ...
  • An incremental algorithm based on edge swapping for constructing restricted Delaunay triangulations 

    Vigo Anglada, Marc (1995-12)
    External research report
    Open Access
    This work presents an algorithm that given a generalized planar graph obtains its Constrained Delaunay Triangulation (CDT). The proposed method works incrementally based in two procedures, one that inserts a new point in ...
  • An incremental hybrid system diagnoser automaton enhanced by discernibility properties 

    Vento Maldonado, Jorge I.; Travé-Massuyès, Louise; Puig Cayuela, Vicenç; Sarrate Estruch, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2014-12-18)
    Article
    Restricted access - publisher's policy
    This paper proposes a method to track the system mode and diagnose a hybrid system without building an entire diagnoser off-line. The method is supported by a hybrid automaton (HA) model that represents the hybrid system ...
  • An index of diversity in stratified random sampling based on the hypoentropy measure 

    Pardo, Leandro; Morales González, Domingo (Universitat Politècnica de Catalunya. Centre de Càlcul, 1990)
    Article
    Open Access
    We consider a measure of the diversity of a population based on the λ-measure of hypoentropy introduced by Ferreri (1980). Our purpose is to study its asymptotic distribution in a stratified sampling and its application ...
  • An index of financial safety of China 

    Jia, Xiaojun; Li, Menggang (OmniaScience, 2015-04)
    Article
    Open Access
    Purpose: This paper combines a synthetic index system by the variables and evaluates China’s financial safety through the change of indexes in a comprehensive way. First of all, it builds the financial industry evaluation ...
  • An Indium Tin Oxide-Free Polymer Solar Cell on Flexible Glass 

    Formica, Nadia; Mantilla-Perez, Paola; Ghosh, Dhriti S.; Janner, David; Chen, Tong Lai; Huang, Minghuang; Garner, Sean; Martorell, Jordi; Pruneri, Valerio (2015-02-05)
    Article
    Open Access
    : Future optoelectronic devices and their low-cost roll-to-roll production require mechanically flexible transparent electrodes (TEs) and substrate materials. Indium tin oxide (ITO) is the most widely used TE because of ...
  • An individual-based model for the study of Paracoccus denitrificans, a denitrifying bacterium 

    Araujo Granda, Pablo Alejandro; Gras Moreu, Anna Maria; Ginovart Gisbert, Marta (2013)
    Conference lecture
    Open Access
    In order to understand some environmental factors that control N2O production by microbes in agricultural soils, a virtual bioreactor for Paracoccus denitrificans was designed using a culture medium containing succinate ...
  • An inflatable flying-wing Micro-Air Vehicle with Vertical Take-Off/Landing capability 

    Padilla Hernandez, Aymon (Universitat Politècnica de Catalunya, 2014-06-20)
    Bachelor thesis
    Restricted access - author's decision
    This work should be understood as the challenge of integrating different technologies that have a strong boom in the aeronautics field. The aim is to perform a micro air vehicle, where the entire structure consists of a ...
  • An Information model for a policy based management. extensions to marine sensor networks and ocean observatories 

    Sorribas, Jordi; Barba Martí, Antonio; Trullols Farreny, Enric; Piera Fernández, Jaume (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2008-02-14T12:10:08Z)
    Article
    Open Access
  • An information theory-based tool for characterizing the interaction environment of a protein 

    Massanet Vila, Raimon; Gallardo Chacón, Joan Josep; Caminal Magrans, Pere; Perera Lluna, Alexandre (2010)
    Conference lecture
    Open Access
    In recent years large amounts of information have been accumulated in proteomic, genetic and metabolic databases. Much effort has been dedicated to developing methods that successfully exploit, organize and structure this ...
  • An Information-Theory Framework for Multi-Modal Visualization 

    Bramon Freixas, Roger (Universitat Politècnica de Catalunya, 2009-09)
    Master thesis
    Open Access
    The main goal of this master thesis is the development of new fusion strategies that enhance multimodal visualization strategies.
  • An infrastructure for detecting and punishing malicious hosts using mobile agent watermarking 

    Esparza Martín, Óscar; Muñoz Tapia, José Luis; Tomàs Buliart, Joan; Soriano Ibáñez, Miguel (2010-04-02)
    Article
    Open Access
    Mobile agents are software entities consisting of code, data, and state that can migrate autonomously from host to host executing their code. In such scenario there are some security issues that must be considered. In ...