• Impact of blood rheological strategies on the optimization of patient-specific LAAO configurations for thrombus assessment

  Albors, Carlos; Olivares Miyares, Andy Luis; Iriart, Xavier; Cochet, Hubert; Mill, Jordi; Camara, Oscar (Springer, 2023)

  Left atrial appendage occlusion devices (LAAO) are a feasible alternative for non-valvular atrial fibrillation (AF) patients at high risk of thromboembolic stroke and contraindication to antithrombotic therapies. However, ...
• Sensitivity analysis of left atrial wall modeling approaches and inlet/outlet boundary conditions in fluid simulations to predict thrombus formation

  Albors, Carlos; Mill, Jordi; Kjeldsberg, Henrik A; Viladés-Medel, David; Olivares Miyares, Andy Luis; Valen-Sendstad, Kristian; Camara, Oscar (Springer, 2022)

  In-silico fluid simulations of the left atria (LA) in atrial fibrillation (AF) patients can help to describe and relate patient-specific morphologies and complex flow haemodynamics with the pathophysiological mechanisms ...
• Towards real-time optimization of left atrial appendage occlusion device placement through physics-informed neural networks

  Morales, Xabier; Albors, Carlos; Mill, Jordi; Camara, Oscar (Springer, 2022)

  The adoption of patient-specific computational fluid dynamics (CFD) simulations has been instrumental toward a better understanding of the mechanisms underlying thrombogenesis in the left atrial appendage. Such simulations ...
• Unsupervised machine learning exploration of morphological and haemodynamic indices to predict thrombus formation in the left atrial appendage

  Saiz-Vivó, Marta; Mill, Jordi; Harrison, Josquin; Jimenez-Perez, Guillermo; Legghe, Benoit; Iriart, Xavier; Cochet, Hubert; Piella Fenoy, Gemma; Sermesant, Maxime; Camara, Oscar (Springer, 2022)

  Atrial Fibrillation (AF) is the most common cardiac arrhythmia, and it is associated with an increased risk of embolic stroke. It is known that AF-related thrombus formation occurs predominantly in the left atrial appendage ...
• Abelian groups of fractional operators

  Torres-Hernandez, Anthony; Brambila Paz, Fernando; Ramírez, Rafael, 1966- (MDPI, 2022)

  Taking into count the large number of fractional operators that have been generated over the years, and considering that their number is unlikely to stop increasing at the time of writing this paper due to the recent boom ...
• The CLEF-2024 CheckThat! Lab: check-worthiness, subjectivity, persuasion, roles, authorities, and adversarial robustness.

  Barrón Cedeño, Alberto; Alam, Firoj; Chakraborty, Tanmoy; Elsayed, Tamer; Nakov, Preslav; Przybyła, Piotr; Struß, Julia Maria; Haouari, Fatima; Hasanain, Maram; Ruggeri, Federico; Song, Xingyi; Suwaileh, Reem (Springer, 2024)

  The first five editions of the CheckThat! lab focused on the main tasks of the information verification pipeline: check-worthiness, evidence retrieval and pairing, and verification. Since the 2023 edition, it has been ...
• Researching the role of AI tools in the research practice

  Hernández Leo, Davinia; Sánchez Reina, Jesús Roberto (Universitat Pompeu Fabra, [2024])

  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 ...
• Variable penumbra soft shadows for mobile devices

  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 ...
• A multiclass anisotropic Mumford-Shah functional for segmentation of d-dimensional vectorial images

  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 ...
• Haemodynamic changes in the fetal circulation post-connection to an artificial placenta: a computational modelling study

  Villanueva, M. Inmaculada; López, Marc; Sánchez, Sergio; García Cañadilla, Patricia, 1985-; Randanne, Paula C.; Hawkins, Ameth; Eixarch, Elisenda; Bonet-Carne, Elisenda; Gratacós Solsona, Eduard; Crispi Brillas, Fàtima; Bijnens, Bart; Bernardino Perez, Gabriel (Springer, 2022)

  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, ...
• Computational modelling of the cardiovascular system for the non-invasive diagnosis of portal hypertension

  Villanueva, M. Inmaculada; García Cañadilla, Patricia, 1985-; Camara, Oscar; Garcia-Criado, Angeles; Campreciós, Genís; Perez-Campuzano, Valeria; Hernandez-Gea, Virgina; Turon, Fanny; Baiges Aznar, Anna; Lopez Sainz, Angela; García-Pagan, Juan Carlos; Bijnens, Bart; Bernardino Perez, Gabriel (Springer, 2023)

  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 ...
• Distilling an ensemble of greedy dependency parsers into one MST parser

  Kuncoro, Adhiguna; Ballesteros, Miguel; Kong, Lingpeng; Dyer, Chris; Smith, Noah A. (ACL (Association for Computational Linguistics), 2016)

  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 ...
• Multimodal assessment of best possible self as a self-regulatory activity for the classroom

  Sayis, Batuhan; Beardsley, Marc; Portero Tresserra, Marta (Institute of Electrical and Electronics Engineers (IEEE), 2023)

  Best possible self (BPS) is a positive psychological intervention shown to enhance well-being which involves writing a description of an ideal future scenario. This paper presents a comparison of psychophysiological ...
• Evaluating an adaptive intervention in collaboration scripts deconstructing body image narratives in a social media educational platform

  Lobo Quintero, René Alejandro; Theophilou, Emily; Sánchez Reina, Jesús Roberto; Hernández Leo, Davinia (Springer, 2022)

  Social Media is an important disseminator of body image representations and the body cult. The growing popularity of social media among children and adolescents makes minors a vulnerable group to the internalization of ...
• Frequency-domain GLR detection of cyclostationary signals in frequency-selective channels

  Font-Segura, Josep; Riba, Jaume; Villares, Javier; Vázquez, Gregori (Institute of Electrical and Electronics Engineers (IEEE), 2014)

  The frequency diversity exhibited by cyclostationary signals is exploited in this paper. A novel rank-1 frequency-domain representation of a digital waveform is proposed to address the generalized likelihood ratio (GLR) ...
• Asymptotics of the random coding error probability for constant-composition codes

  Font-Segura, Josep; Martínez, Alfonso, 1973-; Guillén i Fábregas, A. (Albert) (Institute of Electrical and Electronics Engineers (IEEE), 2019)

  Saddlepoint approximations to the error probability are derived for multiple-cost-constrained random coding ensembles where codewords satisfy a set of constraints. Constantcomposition inputs over a binary symmetric channel ...
• Asymptotics of the error probability in quasi-static binary symmetric channels

  Font-Segura, Josep; Martínez, Alfonso, 1973-; Guillén i Fábregas, A. (Albert) (Institute of Electrical and Electronics Engineers (IEEE), 2017)

  This paper provides an asymptotic expansion of the error probability, as the codeword length n goes to infinity, in quasi-static binary symmetric channels. After the leading term, namely the outage probability, the next ...
• Sphericity minimum description length: asymptotic performance under unknown noise variance

  Font-Segura, Josep; Riba, Jaume; Vázquez, Gregori (Institute of Electrical and Electronics Engineers (IEEE), 2015)

  This paper revisits the model order selection problem in the context of second-order spectrum sensing in cognitive radio. Taking advantage of the recent interest on the generalized likelihood ratio (GLR), the asymptotic ...
• Quadratic sphericity test for blind detection over time-varying frequency-selective fading channels

  Font-Segura, Josep; Riba, Jaume; Villares, Javier; Vázquez, Gregori (Institute of Electrical and Electronics Engineers (IEEE), 2013)

  This paper addresses the problema of blind detection of a wide-sensestationary (WSS) signal overfading channels.We propose a test statistic which isoptimal from a correlation matching perspective that shows invariance ...
• Asymptotic error exponents in energy-detector and estimator-correlator signal detection

  Font-Segura, Josep; Vázquez, Gregori; Riba, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2012)

  The performance in signal detection is evaluated by the error (false-alarm and missed-detection) probabilities.However,calculating these probabilities is a difficult taskin practice. This paper studies the asymptotic ...

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