Documents de recerca, en accés obert, com ara articles de revista, llibres, comunicacions, ponències o posters a jornades i congressos, etc., del Departament de Tecnologies de la Informació i de les Comunicacions de la UPF.
Caligiore, Daniele; Pezzulo, Giovanni; Baldassarre, Gianluca; Bostan, Andreea C.; Strick, Peter L.; Doya, Kenji; Helmich, Rick C.; Dirkx, Michiel; Houk, James; Jörntell, Henrik; Lago-Rodriguez, Angel; Galea, Joseph M.; Miall, R. Chris; Popa, Traian; Kishore, Asha; Verschure, Paul F. M. J.; Zucca, Riccardo; Herreros, Ivan(Springer, 2017)
Despite increasing evidence suggesting the cerebellum works in concert with the cortex and basal ganglia, the nature of the reciprocal interactions between these three brain regions remains unclear. This consensus paper ...
This paper presents a novel state representation for reward-free Markov decision processes. The idea is to learn, in a self-supervised manner, an embedding space where distances between pairs of embedded states correspond ...
Comas, Joaquim; Ruiz Ovejero, Adrià; Sukno, Federico Mateo(Institute of Electrical and Electronics Engineers (IEEE), 2022)
We present a lightweight neural model for remote heart rate estimation focused on the efficient spatio-temporal learning of facial photoplethysmography (PPG) based on i) modelling of PPG dynamics by combinations of multiple ...
Sanchez Todo, Roser; Bastos, André M.; Lopez-Sola, Edmundo; Mercadal, Borja; Santarnecchi, Emiliano; Miller, Earl K.; Deco, Gustavo; Ruffini, Giulio(Elsevier, 2023)
Cortical function emerges from the interactions of multi-scale networks that may be studied at a high level using neural mass models (NMM) that represent the mean activity of large numbers of neurons. Here, we provide first ...
Becerra Fajardo, Laura; Minguillon, Jesus; Comerma-Montells, Albert; Ivorra Cano, Antoni, 1974-(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Wireless power transfer (WPT) methods such as inductive coupling and ultrasounds are used as an alternative to electrochemical batteries to energize active implantable medical devices. However, existing WPT methods require ...
We investigate the specific attenuation factor for the Bessel models of viscoelasticity. We find that the quality factor for this class can be expressed in terms of Kelvin functions and that its asymptotic behaviours confirm ...
Galí Pérez, Olga; Sayis, Batuhan; Parés, Narcís, 1966-(ACM Association for Computer Machinery, 2021)
The present study analyses the effectiveness of a mixed reality (MR) face-to-face full-body system to foster social interaction behaviors (SIBs) in a child with ASC and a play partner, a child without ASC (non-ASC). An MR ...
Andrzejak, Ralph Gregor; Espinoso Palacín, Anaïs(American Institute of Physics (AIP), 2023)
Different across-layer synchronization types of chimera states in multilayer networks have been discovered recently. We investigate possible relations between them, for example, if the onset of some synchronization type ...
Diaz-Vilor, Carles; Lozano Solsona, Angel; Jafarkhani, Hamid(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Recently, cell-free (CF) architectures, in which every user can potentially communicate with every base station, have received a lot of attention. This paper considers the uplink of fully and partially centralized CF ...
Guardiola, Marta; Buitrago, Santiago; Fernández-Esparrach, Gloria; O’Callaghan, Joan M.; Romeu, Jordi; Cuatrecasas, Miriam; Córdova, Henry; González Ballester, Miguel Ángel, 1973-; Camara, Oscar(American Association of Physicists in Medicine (AAPM), 2018)
Purpose: Colorectal cancer is highly preventable by detecting and removing polyps, which are the precursors. Currently, the most accurate test is colonoscopy, but still misses 22% of polyps due to visualization limitations. ...
Gómez Balduz, Olga; Okumura, Kenichi; Honjo, Osami; Sun, Mei; Ishii, Ryo; Bijnens, Bart; Friedberg, Mark K.(American Psychological Association (APA), 2018)
The objective of the present study was to investigate mechanisms of heart rate (HR) reduction on biventricular function and interactions in experimental pulmonary arterial hypertension (PAH). We compared cardiac cycle ...
Martinez, Alfonso; Font Segura, Josep; Colombaro, Ivano(Springer, 2021)
This paper characterizes the symmetric rank-2 stress–energy–momentum tensor associated with fields whose Lagrangian densities are expressed as the dot product of two multivector fields, e.g., scalar or gauge fields, in ...
Caselles, Vicente; Sapiro, Guillermo; Solé, Andrés; Ballester, Coloma(SIAM (Society for Industrial and Applied Mathematics), 2006)
A geometric representation for images is studied in this work. This is based on two complementary geometric structures for the topographic representation of an image. The first one computes a description of the Morse ...
Valls, Victor; Sánchez, José Luis; Cano Bastidas, Cristina; Bellalta, Boris; Oliver Riera, Miquel(Elsevier, 2013)
The paper presents two mechanisms for designing an on-demand, reliable and efficient collection protocol for Wireless Sensor Networks. The former is the Bidirectional Link Quality Estimation, which allows nodes to easily ...
Law, Mark; Russo, Alessandra; Bertino, Elisa; Broda, Krysia; Lobo, Jorge(Association for the Advancement of Artificial Intelligence (AAAI), 2020)
Inductive Logic Programming (ILP) systems aim to find a set of logical rules, called a hypothesis, that explain a set of examples. In cases where many such hypotheses exist, ILP systems often bias towards shorter solutions, ...
Patch-based approaches are used in state-of-the-art methods for image inpainting. This paper presents a new method for exemplar-based image inpainting using transformed patches. The transformation is determined for each ...
Crespo Bojorque, Paola, 1985-; Toro Soto, Juan Manuel, 1976-(American Psychological Association (APA), 2016)
Traditionally, physical features in musical chords have been proposed to be at the root of consonance perception. Alternatively, recent studies suggest that different types of experience modulate some perceptual foundations ...