Browsing Articles (Departament de Tecnologies de la Informació i les Comunicacions) by Title

Welcome to the UPF Digital Repository

Browsing Articles (Departament de Tecnologies de la Informació i les Comunicacions) by Title

Sort by: Order: Results:

  • Hernández Leo, Davinia; Romeo, Lauren; Carralero, Miguel A.; Chacón, Jonathan; Carrió, Mar; Moreno, Pau; Blat, Josep (Elsevier, 2011)
    Two important challenges that teachers are currently facing are the sharing and the collaborative authoring of their learning design solutions, such as didactical units and learning materials. On the one hand, there are ...
  • 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 increase in the volume of records of where people have been and when they were there. The analysis of these spatio-temporal data can supply ...
  • Fedorov, Vadim; Arias, Pablo; Sadek, Rida; Facciolo Furlan, Gabriele; Ballester, Coloma (SIAM (Society for Industrial and Applied Mathematics), 2015)
    In this paper we study the problem of comparing two patches of images defined on Riemannian manifolds which in turn can be defined by each image domain with a suitable metric depending on the image. For that we single ...
  • Sentürk, Sertan; Holzapfel, Andre; Serra, Xavier (Taylor & Francis (Routledge), 2014)
    The most relevant representations of music are notations and audio recordings, each of which emphasizes a particular perspective and promotes different approximations in the analysis and understanding of music. Linking ...
  • Boutros, Joseph Jean; Guillén i Fàbregas, Albert; Biglieri, Ezio; Zémor, Gilles (Institute of Electrical and Electronics Engineers (IEEE), 2010)
    We design powerful low-density parity-check (LDPC) codes with iterative decoding for the block-fading channel. We first study the case of maximum-likelihood decoding, and show that the design criterion is rather straightforward. ...
  • Bonet, Blai; Geffner, Héctor (Association for the Advancement of Artificial Intelligence (AAAI), 2005)
    We describe the version of the GPT planner to be used in the planning competition. This version, called mGPT, solves mdps specified in the ppddl language by extracting and using different classes of lower bounds, along ...
  • 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 cardiac cycle, using 3D rotational X-ray angiography (3DRA) acquisitions. Aneurysm pulsation is modeled as ...
  • Pastukhov, Alexander; García Rodríguez, Pedro Ernesto; Haenicke, Joachim; Guillamon i Grabolosa, Antoni; Deco, Gustavo; Braun, Jochen (Frontiers Media, 2013)
    We report that multi-stable perception operates in a consistent, dynamical regime, balancing the conflicting goals of stability and sensitivity. When a multi-stable visual display is viewed continuously, its phenomenal ...
  • Angelosante, Daniele; Biglieri, Ezio; Lops, Marco (Institute of Electrical and Electronics Engineers (IEEE), 2009)
    The problem of jointly estimating the number, the identities, and the data of active users in a time-varying multiuser environment was examined in a companion paper (IEEE Trans. Information Theory, vol. 53, no. 9, September ...
  • Rusek, Fredrik; Lozano Solsona, Angel; Jindal, Nihar (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    We present a method to compute, quickly and efficiently, the mutual information achieved by an IID (independent identically distributed) complex Gaussian signal on a block Rayleigh-faded channel without side information ...
  • Masquelier, Timothée; Deco, Gustavo (Public Library of Science (PLoS), 2013)
    In the brain, synchronization among cells of an assembly is a common phenomenon, and thought to be functionally relevant. Here we used an in vitro experimental model of cell assemblies, cortical cultures, combined with ...
  • Barrós Loscertales, Alfonso; Ventura Campos, Noelia; Visser, Maya; Alsius, Agnès; Pallier, Christophe; Ávila Rivera, César; Soto-Faraco, Salvador, 1970- (Elsevier, 2013)
    Neuroimaging studies of audiovisual speech processing have exclusively addressed listeners’ native language (L1). Yet, several behavioural studies now show that AV processing plays an important role in non-native (L2) ...
  • Van Hartevelt, Tim J.; Cabral, Joana R. B.; Deco, Gustavo; Møller, Arne; Green, Alex L.; Aziz, Tipu Z.; Kringelbach, Morten L. (Public Library of Science (PLoS), 2014)
    Background: Positive clinical outcomes are now well established for deep brain stimulation, but little is known about the effects of long-term deep brain stimulation on brain structural and functional connectivity. Here, ...
  • Benkner, Siegfried; Arbona, Antonio; Berti, Guntram; Chiarini, Alessandro; Dunlop, Robert; Engelbrecht, Gerhard; Frangi Caregnato, Alejandro; Friedrich, Christoph M.; Hanser, Susanne; Hasselmeyer, Peer; Hose, D. Rodney; Iavindrasana, Jimison; Köhler, Martin; Lo Iacono, Luigi; Lonsdale, Guy; Meyer, Rodolphe; Moore, Bob; Rajasekaran, Hariharan; Summers, Paul E.; Wöhrer, Alexander; Wood, Steven (Institute of Electrical and Electronics Engineers (IEEE), 2010)
    The increasing volume of data describing human disease processes and the growing complexity of understanding, managing, and sharing such data presents a huge challenge for clinicians and medical researchers. This paper ...
  • Theodoni, Panagiota; Kovacs, Gyula; Greenlee, Mark W.; Deco, Gustavo (Society for Neuroscience, 2011)
    Recently, there has been an increased interest on the neural mechanisms underlying perceptual decision making. However, the effect of neuronal adaptation in this context has not yet been studied. We begin our study by ...
  • Carabias Orti, Julio J; Cobos, Máximo; Vera Candeas, Pedro; Rodríguez Serrano, Francisco J (SpringerOpen, 2013)
    Close-microphone techniques are extensively employed in many live music recordings, allowing for interference rejection and reducing the amount of reverberation in the resulting instrument tracks. However, despite the use ...
  • Lozano Solsona, Angel; Porrat, Dana (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    In the context of fading channels it is well established that, with a constrained transmit power, the bit rates achievable by signals that are not peaky vanish as the bandwidth grows without bound. Stepping back from the ...
  • Fernandes, Henrique M.; Van Hartevelt, Tim J.; Boccard, Sandra G J; Owen, Sarah L. F.; Cabral, Joana R. B.; Deco, Gustavo; Green, Alex L.; Fitzgerald, James J.; Aziz, Tipu Z.; Kringelbach, Morten L. (Institute of Physics (IOP), 2015)
    Deep brain stimulation (DBS) is a remarkably effective clinical tool, used primarily for movement disorders. DBS relies on precise targeting of specific brain regions to rebalance the oscillatory behaviour of whole-brain ...
  • 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, ...
  • Biglieri, Ezio; Hong, Yi; Viterbo, Emanuele (Institute of Electrical and Electronics Engineers (IEEE), 2009)
    We focus on full-rate, fast-decodable space–time block codes (STBCs) for 2 x 2 and 4 x 2 multiple-input multiple-output (MIMO) transmission. We first derive conditions and design criteria for reduced-complexity maximum-likelihood ...

Search


Advanced Search

Browse

My Account