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Visualitzant Articles (Departament de Tecnologies de la Informació i les Comunicacions) per data de publicació

Visualitzant Articles (Departament de Tecnologies de la Informació i les Comunicacions) per data de publicació

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  • Igual, Laura; Preciozzi, Javier; Garrido, Luís; Almansa, Andrés; Caselles, Vicente; Rougé, Bernard (AIMS American Institute of Mathematical Sciences, 2007)
    In this work we propose a new automatic methodology for computing accurate digital elevation models (DEMs) in urban environments from low baseline stereo pairs that shall be available in the future from a new kind of earth ...
  • Serrà Julià, Joan; Gómez Gutiérrez, Emilia, 1975-; Herrera Boyer, Perfecto; Serra, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    We present a new technique for audio signal comparison based on tonal subsequence alignment and its application to detect cover versions (i.e., different performances of the same underlying musical piece). Cover song ...
  • Girardin, Fabien; Dal Fiore, Filippo; Ratti, Carlo; Blat, Josep (Taylor & Francis (Routledge), 2008)
    In recent years, the large deployment of mobile devices has led to a massive/nincrease in the volume of records of where people have been and when they were there./nThe analysis of these spatio-temporal data can supply ...
  • Lozano Solsona, Angel (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    Expressions relating spectral efficiency, power, and Doppler spectrum, are derived for Rayleigh-faded wireless channels with Gaussian signal transmission. No side information on the state of the channel is assumed at the ...
  • Lozano Solsona, Angel; Tulino, Antonia M.; Verdú, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    This paper formulates power allocation policies that maximize the region of mutual informations/nachievable in multiuser downlink OFDM channels. Arbitrary partitioning of/nthe available tones among users and arbitrary ...
  • Pérez Sanagustín, Maria del Mar; Hernández Leo, Davinia; Santos Rodríguez, Patrícia; Sayago Barrantes, Sergio; Blat, Josep; Griffiths, Dai (International Association of Online Engineering (IAOE), 2008)
    Dialogic learning and interactive groups have proved to be a useful methodological approach applied/nin educational situations for lifelong adult learners. The principles of this approach stress the/nimportance of dialogue ...
  • Schoonenboom, Judith; Sligte, Henk; Moghnie, Ayman; Hernández Leo, Davinia; Stefanov, Krassen; Glahn, Christian; Specht, Marcus; Lemmers, Ruud (International Association of Online Engineering (IAOE), 2008)
    This paper describes an experiment to explore the effects of the TENCompetence infrastructure for supporting lifelong competence development which is now in development. This infrastructure provides structured, multi-leveled ...
  • Buehlmann, Andrés; Deco, Gustavo (Society for Neuroscience, 2008)
    Extensive theoretical and experimental work on the neuronal correlates of visual attention raises two hypotheses about the underlying mechanisms. The first hypothesis, named biased competition, originates from experimental ...
  • Cramer, Ronald; Daza, Vanesa; Gracia, Ignacio; Jiménez Urroz, Jorge; Leander, Gregor; Martí, Jaume, 1943-; Padró, Carles (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    Error-correcting codes and matroids have been widely used in the study of ordinary secret sharing schemes. In this paper, the connections between codes, matroids, and a special class of secret sharing schemes, namely, ...
  • Daza, Vanesa; Herranz, Javier; Sáez, Germán (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    In a distributed key distribution scheme, a set of servers helps a set of users in a group to securely obtain a common key. Security means that an adversary who corrupts some servers and some users has no information about ...
  • Faridi, Azadeh; Ephremides, Anthony (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    We investigate the problem of finding minimum-distortion policies for streaming delay-sensitive but distortion-tolerant data. We consider cross-layer approaches which exploit the coupling between presentation and transport ...
  • Hoogendoorn, Corné; Sukno, Federico M.; Ordás, Sebastián; Frangi Caregnato, Alejandro (Springer, 2009)
    In this work we describe the usage of bilinear statistical models as a means of factoring the shape variability into two components attributed to inter-subject variation and to the intrinsic dynamics of the human heart. ...
  • Zhang, Chong; Villa-Uriol, Maria-Cruz; De Craene, Mathieu; Pozo Soler, José Ma. (José María); Frangi Caregnato, Alejandro (Institute of Electrical and Electronics Engineers (IEEE), 2009)
    This paper presents a technique to estimate and model patient-specific pulsatility of cerebral aneurysms over one/ncardiac cycle, using 3D rotational X-ray angiography (3DRA) acquisitions. Aneurysm pulsation is modeled as ...
  • Pérez Sanagustín, Maria del Mar; Santos Rodríguez, Patrícia; Moghnie, Ayman; Hernández Leo, Davinia; Blat, Josep (Inderscience Enterprises Ltd, 2009)
    The emergence of the Web 2.0 technologies in the last years have/nchanged the way people interact with knowledge. Services for cooperation and/ncollaboration have placed the user in the centre of a new knowledge building/nspace. ...
  • Huguet, Marina; Tobón Gómez, Catalina, 1981-; Bijnens, Bart; Frangi Caregnato, Alejandro; Petit i Guinovart, Màrius (BioMed Central, 2009)
    Blunt chest traumas are a clinical challenge, both for diagnosis and treatment. The use of/nCardiovascular Magnetic Resonance can play a major role in this setting. We present two cases: a/n12-year-old boy and 45-year-old ...
  • Facciolo Furlan, Gabriele; Almansa, Andrés; Aujol, Jean-François; Caselles, Vicente (SIAM (Society for Industrial and Applied Mathematics), 2009)
    We propose a restoration algorithm for band limited images that considers irregular/n(perturbed) sampling, denoising, and deconvolution. We explore the application of a family of/nregularizers that allow to control the ...
  • Venkatesan, Sivarama; Huang, Howard; Lozano Solsona, Angel; Valenzuela, R. A. (Hindawi, 2009)
    It is well known that multiple-input multiple-output (MIMO) techniques can bring numerous benefits, such as higher spectral efficiency, to point-to-point wireless links. More recently, there has been interest in extending ...
  • Masquelier, Timothée; Hugues, Etienne; Deco, Gustavo; Thorpe, Simon J. (Society for Neuroscience, 2009)
    Recent experiments have established that information can be encoded in the spike times of neurons relative to the phase of a background oscillation in the local field potential—a phenomenon referred to as “phase-of-firing ...
  • Singh, Pankai K.; Marzo, Alberto; Coley, Stuart C.; Berti, Guntram; Bijlenga, Philippe; Lawford, Patricia V.; Villa-Uriol, Maria-Cruz; Rufenacht, Daniel A.; McCormack, Keith M.; Frangi Caregnato, Alejandro; Patel, Umang J.; Hose, D. Rodney (Hindawi, 2009)
    Objective: The importance of hemodynamics in the etiopathogenesis of intracranial aneurysms (IAs) is widely accepted./nComputational fluid dynamics (CFD) is being used increasingly for hemodynamic predictions. However, ...
  • Hernández Leo, Davinia; Louys, Amélie; Schoonenboom, Judith; Pérez Sanagustín, Maria del Mar; Lemmers, Ruud (International Forum of Educational Technology & Society, 2009)
    This paper describes a pilot study centred on the technology-enhanced self-development of competences in lifelong learning education carried out in the challenging context of the Association of Participants Àgora. The pilot ...