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.
Artificial intelligence is in a constant state of evolution and transformation. In recent times, remarkable changes in AI applications have been observed, ranging from generating social media photos to customizing content ...
Non-invasive brain stimulation (NIBS) is a method for the study of cognitive function that is quickly gaining popularity. It bypasses the correlative approaches of other imaging techniques, making it possible to establish ...
Pseudorandom number generation (PRNG) is the main security tool in low-cost passive radio-frequency identification (RFID) technologies, such as EPC Gen2. We present a lightweight PRNG design for low-cost passive RFID tags, ...
Syllables are one of the fundamental building blocks of early language acquisition. From birth onwards, infants preferentially segment, process and represent the speech into syllable-sized units, raising the question of ...
Do, Heedong; Le, Namyoon; Lozano Solsona, Angel(Institute of Electrical and Electronics Engineers (IEEE), 2023)
This paper deals with line-of-sight (LOS) MIMO communication via an intelligent reflecting surface (IRS). It is shown that the number of spatial degrees of freedom (DOF) afforded by this setting grows in proportion with ...
Mojahedian, Mohammad M.; Lozano Solsona, Angel(Institute of Electrical and Electronics Engineers (IEEE), 2023)
An approach is presented to compute the capacity-achieving precoder and receiver for wide-aperture MIMO with uniform linear arrays in O(N2min) operations as opposed to the O(N2minNmax) required by the singular-value ...
Do, Heedong; Lee, Namyoon; Lozano Solsona, Angel(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Motivated by the widespread adoption of the parabolic wavefront model for line-of-sight (LOS) multiple-input multiple-output (MIMO) communication, this paper presents a comprehensive analysis of this model’s validity and ...
Ruffini, Giulio; Lopez-Sola, Edmundo; Vohryzek, Jakub; Sanchez Todo, Roser(MDPI, 2024)
We explore the intersection of neural dynamics and the effects of psychedelics in light of distinct timescales in a framework integrating concepts from dynamics, complexity, and plasticity. We call this framework neural ...
Introduction: Individuals in the midst of a mental health crisis frequently exhibit instability and face an elevated risk of recurring crises in the subsequent weeks, which underscores the importance of timely intervention ...
Background:Gender differences in the use of educational environments and socialmedia platforms have been a topic of interest in research. Several studies have exam-ined the disparities between female and male participants ...
Evans, Alun Thomas; Agenjo, Javier; Blat, Josep(SCITEPRESS – Science and Technology Publications, 2014)
In many applications of 3D graphics, shadows increase the believability and perceived quality of a scene. With the increase in power of workstation hardware, high-quality soft shadowing has become relatively common in many ...
Garamendi, Juan Francisco; Schiavi, Emanuele(SCITEPRESS – Science and Technology Publications, 2017)
We present a general model for multi-class segmentation of multi-channel digital images. It is based on the minimization of an anisotropic version of the Mumford-Shah energy functional in the class of piecewise constant ...
Artificial placenta (AP) is a promising approach to improve survival in extremely premature fetuses, removing them from the uterus and replacing the placenta by an external oxygenator. In in vivo experiments with lambs, ...
Cirrhosis is a prevalent chronic liver disease that causes scarring of the liver, leading to altered mechanics and impaired function. One of its most severe complications is portal hypertension, characterised by an increase ...
There is still no categorical answer as to why humans, and no other species, have speech, or why speech is the way it is. Several purely anatomical arguments have been put forward, but they have been shown to be false, ...
Larrabide, Ignacio, 1978-; Aguilar, María Laura; Morales, Hernán G.; Geers, Adrianus Johannes; Kulcsár, Zsolt; Rüfenacht, Daniel; Frangi Caregnato, Alejandro(American Society of Neuroradiology, 2013)
Background and purpose: Effects of blood flow modification by flow diverters are observed to lead often to aneurysm thrombosis and reverse remodeling. For this process, to further understand the potential roles of ...
Lange, Matthias; Di Marco, LY; Lekadir, Karim, 1977-; Lassila, Toni; Frangi Caregnato, Alejandro(Public Library of Science (PLoS), 2016)
False tendons (FTs) are fibrous or fibromuscular bands that can be found in both the normal and abnormal human heart in various anatomical forms depending on their attachment points, tissue types, and geometrical properties. ...
Lallée, Stéphane; Verschure, Paul F. M. J.(MDPI, 2015)
Robotic agents are spreading, incarnated as embodied entities, exploring the tangible world and interacting with us, or as virtual agents crawling over the web, parsing and generating data. In both cases, they require: (i) ...
We introduce two first-order graph-based dependency parsers achieving a new state of the art. The first is a consensus parser built from an ensemble of independently trained greedy LSTM transition-based parsers with different ...
Kjer, Hans Martin; Fagertun, Jens; Vera, Sergio; Gil, Debora; González Ballester, Miguel Ángel, 1973-; Paulsen, Rasmus(Elsevier, 2016)
Better understanding of the anatomical variability of the human cochlear is important for the design and function of Cochlear Implants. Proper non-rigid alignment of high-resolution cochlear μCT data is a challenge for the ...