Recent Submissions

  • Effect of electron number densities on the radio signal propagation in an inductively coupled plasma facility 

    Felgueiras Luis, Diana Zaida; Giangaspero, Vincent; Viladegut Farran, Alan; Lani, Andrea; Camps Carmona, Adriano José; Chazot, Olivier (2023-11)
    Article
    Open Access
    Spacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization, due to the extreme temperatures in the shock layer. The high electron number densities cause attenuation of ...
  • Prediction models using artificial intelligence and longitudinal data from electronic health records: a systematic methodological review 

    Carrasco Ribelles, Lucía Amalia; Llanes Jurado, José; Gallego Moll, Carlos; Cabrera-Bean, Margarita; Monteagudo Zaragoza, Mònica; Violán Fors, Concepción; Zabaleta del Olmo, Edurne (2023-09-02)
    Article
    Open Access
    Objective: To describe and appraise the use of artificial intelligence (AI) techniques that can cope with longitudinal data from electronic health records (EHRs) to predict health-related outcomes. Methods: This ...
  • Measuring the mixing of contextual information in the transformer 

    Ferrando Monsonís, Javier; Gallego Olsina, Gerard Ion; Ruiz Costa-Jussà, Marta (Association for Computational Linguistics, 2022)
    Conference lecture
    Open Access
    The Transformer architecture aggregates input information through the self-attention mechanism, but there is no clear understanding of how this information is mixed across the entire model. Additionally, recent works have ...
  • Explaining how transformers use context to build predictions 

    Ferrando Monsonís, Javier; Gallego Olsina, Gerard Ion; Tsiamas, Ioannis; Ruiz Costa-jussà, Marta (Association for Computational Linguistics, 2023)
    Conference lecture
    Open Access
    Language Generation Models produce words based on the previous context. Although existing methods offer input attributions as explanations for a model’s prediction, it is still unclear how prior words affect the model’s ...
  • Satellite edge computing for real-time and very-high resolution Earth observation 

    Leyva-Mayorga, Israel; Martínez Gost, Marc; Moretti, Marco; Pérez Neira, Ana Isabel; Vázquez Oliver, Miguel Ángel; Popovski, Petar; Soret, Beatriz (2023-07-18)
    Article
    Open Access
    In high-resolution Earth observation imagery, Low Earth Orbit (LEO) satellites capture and transmit images to ground to create an updated map of an area of interest. Such maps provide valuable information for meteorology ...
  • Contribution of frailty to multimorbidity patterns and trajectories: Longitudinal dynamic cohort study of aging people 

    Carrasco Ribelles, Lucía Amalia; Cabrera-Bean, Margarita; Danés Castells, Marc; Zabaleta del Olmo, Edurne; Roso Llorach, Albert; Violán Fors, Concepción (2023-06-27)
    Article
    Open Access
    Background: Multimorbidity and frailty are characteristics of aging that need individualized evaluation, and there is a 2-way causal relationship between them. Thus, considering frailty in analyses of multimorbidity is ...
  • Design and validation of a dual-band circular polarization patch antenna and stripline combiner for the FSSCat mission 

    Fernandez Capon, Lara Pilar; Muñoz Martín, Joan Francesc; Ruiz de Azua, Joan Adria; Calveras Augé, Anna M.; Camps Carmona, Adriano José (2023-07)
    Article
    Open Access
    The FMPL-2 payload on board the 3Cat-5/A 6 Unit CubeSat, part of the FSSCat CubeSat mission, includes a dual L-Band Microwave Radiometer and a Global Navigation Satellite System Reflectometer, in one instrument, implemented ...
  • Fresh volcanic aerosols injected in the atmosphere during the volcano eruptive activity at the Cumbre Vieja area (La Palma, Canary Islands): Temporal evolution and vertical impact 

    Cordoba Jabonero, Carmen; Sicard, Michaël; Barreto Velasco, África; Toledano, Carlos; López Cayuela, María Ángeles; Comerón Tejero, Adolfo; García Rodríguez, Omaira; Carvajal Pérez, Clara Violeta; Gil Díaz, Cristina; Ramos López, Ramón; Muñoz Porcar, Constantino; Rodríguez Gómez, Alejandro Antonio (Elsevier, 2023-05)
    Article
    Restricted access - publisher's policy
    For the first time in fifty years, the Cumbre Vieja volcanic area (La Palma, Canary Islands, Spain) erupted on September 19, 2021, giving birth to a new volcano. Fresh volcanic aerosols were continuously injected into the ...
  • Determination of pumping and dynamic vacuum properties of conductive quaternary alloy of TiZrVAg non-evaporable getter 

    Valizadeh, Reza; Hannah, Adrian N.; Malyshev, Oleg; Hsiung, G.Y.; O'Callaghan Castellà, Juan Manuel; Pont, Montse; Tagdulang, Nikki
    Conference report
    Open Access
    Non Evaporable Getter (NEG) coating has been employed extensively in the particle accelerator especial-ly where the vacuum conductance of the vessel is se-verely restricted and ultra-high vacuum condition is required. NEG ...
  • Data driven joint sensor fusion and regression based on geometric mean squared error 

    López Molina, Carlos Alejandro; Riba Sagarra, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference lecture
    Open Access
    This paper explores the problem of estimating a temporal series measured from multiple independent sensors with unequal and stationary measurement errors with unknown variances. By formulating the data fusion problem as a ...
  • Sign language translation from instructional videos 

    Tarrés Benet, Laia; Gallego Olsina, Gerard Ion; Cardoso Duarte, Amanda; Torres Viñals, Jordi; Giró Nieto, Xavier (Computer Vision Foundation, 2023)
    Conference report
    Open Access
    The advances in automatic sign language translation (SLT) to spoken languages have been mostly benchmarked with datasets of limited size and restricted domains. Our work advances the state of the art by providing the first ...
  • A GPU parallel randomized CUR compression method for the Method of Moments 

    López Menchón, Héctor; Heldring, Alexander; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (2023-06-01)
    Article
    Restricted access - publisher's policy
    In this work, we propose a GPU parallel implementation of the randomized CUR (or Pseudo Skeleton) Approximation to compress the -matrices of linear systems that arise in the discretization of integral equations modeling ...

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