Ara es mostren els items 6736-6755 de 98404

  • An iterative algorithm for approximate median graph computation 

    Ferrer Sumsi, Miquel; Bunke, Horst (Institute of Electrical and Electronics Engineers (IEEE), 2010)
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    Recently, the median graph has been shown to be a good choice to obtain a representative of a given set of graphs. It has been successfully applied to graph-based classification and clustering. In this paper we exploit a ...
  • An iterative model for fractal antennas: application to the Sierpinski gasket antenna 

    Puente Baliarda, Carles; Borja Borau, M.Carmen; Navarro Rodero, Mònica; Romeu Robert, Jordi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-05-31)
    Article
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    A simple model that explains the behavior of the Sierpinski fractal antenna is presented. This model shows that the multiband behavior of the Sierpinski fractal antenna is a consequence of its fractal nature. The model is ...
  • An LCA study of an electricity coal supply chain 

    Wang, Chao; Mu, Dong (OmniaScience, 2014-04)
    Article
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    Purpose: The aim of this paper is to provide methods to find the emission source and estimate the amount of waste gas emissions in the electricity coal supply chain, establish the model of the environmental impact (burden) ...
  • An LMI approach to H_ synchronization of second-order neutral master-slave systems 

    Reza Karimi, Hamid; Zapateiro, Mauricio; Luo, Ningsu; Rossell Garriga, Josep Maria (American Automatic Control Council, 2009-06-10)
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    The H_ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delaydependent sufficient conditions for the design of a ...
  • An LMI approach to robust fault estimation for a class of nonlinear systems 

    Witczak, Marcin; Buciakowski, Mariusz; Puig Cayuela, Vicenç; Rotondo, Damiano; Nejjari Akhi-Elarab, Fatiha (2015-06-01)
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    The paper presents a robust fault estimation approach for a class of nonlinear discrete-time systems. In particular, two sources of uncertainty are present in the considered class of systems, that is, an unknown input and ...
  • An LMS-based adaptive predistorter for cancelling nonlinear memory effects in RF power amplifiers 

    Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Cesari Bohigas, Albert; García, José Antonio (2007-12)
    Comunicació de congrés
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    This paper presents the design of an adaptive Digital Predistorter (DPD) for Power Amplifier (PA) linearization whoseimplementation and real time adaptation can be fully performed in a Field Programmable Gate Array (FPGA). ...
  • An LPV Fractional Hayami Model for Canal Control 

    Bolea Monte, Yolanda; Martínez González, Rubén; Grau Saldes, Antoni; Martínez García, Herminio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
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  • An LPV Fractional Model for Canal Control 

    Bolea Monte, Yolanda; Martínez González, Rubén; Grau Saldes, Antoni; Martínez García, Herminio (PERGAMON PRESS. IFAC SERIES., 2009)
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    In this paper an LPV non-integer order control model of an irrigation canal is derived from system identification experiments. This model is experimentally obtained by using the described LPV fractional identification ...
  • An m-level active-clamped converter topology - Operating principle 

    Busquets Monge, Sergio; Nicolás Apruzzese, Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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    This paper presents a novel multilevel active-clamped converter topology, which is an extension to m levels of the three-level active neutral-point-clamped topology. The operating principle is established through the ...
  • An MPEG-4 performance study for non-SIMD, general purpose architectures 

    McKee, Sally A.; Fang, Zhen; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2003)
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    MPEG-4 is an important international standard with wide applicability. This paper focuses on MPEG-4's main profile, video, whose approach allows more efficiency in coding and more flexibility in managing heterogeneous media ...
  • An Ngram-based reordering model 

    Ruiz Costa-Jussà, Marta; Rodríguez Fonollosa, José Adrián (Elsevier, 2009-07)
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    This paper describes in detail a novel approach to the reordering challenge in statistical machine translation (SMT). This Ngram-based reordering (NbR) approach uses the powerful techniques of SMT systems to generate a ...
  • An object-oriented approach to the translation between MOF Metaschemas 

    Raventós Pagès, Ruth (Universitat Politècnica de Catalunya, 2009-02-27)
    Tesi
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    Since the 1960s, many formal languages have been developed in order to allow software engineers to specify conceptual models and to design software artifacts. A few of these languages, such as the Unified Modeling Language ...
  • An objective scatter index based on double-pass retinal images of a point source to classify cataracts 

    Artal, Pablo; Benito, Antonio; Pérez, Guillermo M.; Alcón, E.; de Casas, A.; Pujol Ramo, Jaume; Marin, José M. (2011)
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  • An objective seismic damage index for the evaluation of the performace of RC buildings 

    Vielma, Juan Carlos; Barbat Barbat, Horia Alejandro; Oller Martínez, Sergio Horacio (2008)
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    In modern earthquake-resistant design codes, structural elements have a non-linear behavior during an earthquake, similar to what is considered in the design process, which implies that elements are damaged and it is ...
  • An observational description of a tornadic severe weather event 

    Bech, Joan; Pineda Ruegg, Nicolau; Aran, M; Amaro, J; Gayà, M; Arús, J; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2009)
    Comunicació de congrés
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    This study presents an analysis of a severe weather case study that took place during the early morning of the 2nd of November 2008, when intense convective activity associated to a rapidly evolving low pressure system ...
  • An ocean kinetic energy converter for low-power applications using piezoelectric disk elements 

    Viñolo Monzoncillo, Carlos; Toma, Daniel; Manuel Lázaro, Antonio; Río Fernandez, Joaquín del (2013-09-30)
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    The main problem facing long-term electronic system deployments in the sea, is to find a feasible way to supply them with the power they require. Harvesting mechanical energy from the ocean wave oscillations and converting ...
  • An octree isosurface codification based on discrete planes 

    Boada, Imma; Navazo Álvaro, Isabel (2001)
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    Describes a method to code a decimated model of an isosurface on an octree representation while maintaining volume data if it is needed. The proposed technique is based on grouping the marching cubes (MC) patterns into ...
  • An OFDMA-PON with non-preselected independent ONU sources and centralized feedback wavelength control: Dimensioning and experimental results 

    Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción; Escayola Elias, Francisco Javier; Polo Querol, Víctor; Giacoumidis, E.; Kachris, C.; Tomkos, Ioannis; Prat Gomà, Josep Joan (IEEE, 2012)
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    A simple and low cost method for wavelength control based on centralized OLT monitoring and feedback of economical random non-preselected independent ONU sources is presented. The technique was dimensioned and experimentally ...
  • An on-board data management solution 

    Tel, E.; Rivera, J.; Cabanas, JM; Vazquez, J. M.; Carballo, S.; Minguelez, R.; Gallardo, M.; Amutio, C. (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2010-07-20)
    Article
    Accés obert
    A Marine Data Management System (MDM-400) has been installed on the Instituto Español de Oceanografía (IEO) research vessel B/O Cornide de Saavedra. It is an experience of how a commercial solution has been developed ...
  • An on-line coordination algorithm for multi-robot systems 

    Montaño Sarria, Andrés Felipe; Suárez Feijóo, Raúl (2013)
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    This paper proposes a solution to the problem of coordinating multi-robot systems, which execute individually planned tasks in a shared workspace. The presented approach is a decoupled method that can coordinate the participants ...