Now showing items 1-20 of 221

    • Uniqueness of unconditional basis of infinite direct sums of quasi-Banach spaces 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, J. L. (Kluwer Academic Publishers, 2022)   Artículo / Artikulua  OpenAccess
      This paper is devoted to providing a unifying approach to the study of the uniqueness of unconditional bases, up to equivalence and permutation, of infinite direct sums of quasi-Banach spaces. Our new approach to this type ...
    • Cardiovascular risk in patients with type 2 diabetes: a systematic review of prediction models 

      Galbete Jiménez, Arkaitz Upna Orcid; Tamayo Rodríguez, Ibai; Librero, Julián; Enguita-Germán, Mónica; Cambra, Koldo; Ibáñez Beroiz, Berta (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Aims: to identify all cardiovascular disease risk prediction models developed in patients with type 2 diabetes or in the general population with diabetes as a covariate updating previous studies, describing model performance ...
    • Analysis and application of an overlapped FEM-BEM for wave propagation in unbounded and heterogeneous media 

      Domínguez Baguena, Víctor Upna Orcid; Ganesh, M. (Elsevier, 2022)   Artículo / Artikulua
      An overlapped continuous model framework, for the Helmholtz wave propagation problem in unbounded regions comprising bounded heterogeneous media, was recently introduced and analyzed by the authors (2020) [10]. The continuous ...
    • Uniqueness of unconditional basis of ℓ2⊕T(2) 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L. (American Mathematical Society, 2022)   Artículo / Artikulua  OpenAccess
      We provide a new extension of Pitt’s theorem for compact operators between quasi-Banach lattices which permits to describe unconditional bases of finite direct sums of Banach spaces X1 · · · Xn as direct sums of unconditional ...
    • Exploring the potential of hyperspectral imaging to detect Esca disease complex in asymptomatic grapevine leaves 

      Pérez Roncal, Claudia Upna Orcid; Arazuri Garín, Silvia Upna Orcid; López Molina, Carlos Upna Orcid; Jarén Ceballos, Carmen Upna Orcid; Santesteban García, Gonzaga Upna Orcid; López Maestresalas, Ainara Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Precise and reliable identification of specific plant diseases is a challenge within precision agriculture nowadays. This is the case of esca, a complex grapevine trunk disease, that represents a major threat to modern ...
    • Uniform approximations of the first symmetric elliptic integral in terms of elementary functions 

      Bujanda Cirauqui, Blanca Upna Orcid; López García, José Luis Upna Orcid; Pagola Martínez, Pedro Jesús Upna; Palacios Herrero, Pablo Upna Orcid (Springer, 2022)   Artículo / Artikulua  OpenAccess
      We consider the standard symmetric elliptic integral RF(x, y, z) for complex x, y, z. We derive convergent expansions of RF(x, y, z) in terms of elementary functions that hold uniformly for one of the three variables x, y ...
    • On some classes of nullnorms and h-pseudo homogeneity 

      Lima, Lucélia; Bedregal, Benjamin Upna Orcid; Rocha, Marcus; Castillo López, Aitor; Fernández Fernández, Francisco Javier Upna Orcid; Bustince Sola, Humberto Upna Orcid (Elsevier, 2022)   Artículo / Artikulua
      Nullnorms are aggregation functions which generalize t-norms and t-conorms. For each nullnorm there exists an annihilator element such that, below it, the function behaves like a t-conorm, and, above it, like a t-norm. ...
    • The Southwestern Europe Meteor Network: new advances and analysis of bright fireballs recorded from September to December 2021 

      Madiedo, J. M.; Ortiz, J. L.; Izquierdo, J.; Santos-Sanz, P.; Aceituno, J.; Guindos, E. de; Yanguas Sayas, Patricia Upna Orcid; Palacián Subiela, Jesús Francisco Upna Orcid; San-Segundo, A.; Ávila, D. (MeteorNews, 2022)   Artículo / Artikulua  OpenAccess
      In this work we focus on some recent improvements performed in the framework of the Southwestern Europe Meteor Network (SWEMN) and the SMART project. Thus, by employing artificial intelligence methods, we have significantly ...
    • The Southwestern Europe Meteor Network: development of new artificial intelligence tools and remarkable fireballs observed from January to February 2022 

      Madiedo, J. M.; Ortiz, J. L.; Izquierdo, J.; Santos-Sanz, P.; Aceituno, J.; Guindos, E. de; Yanguas Sayas, Patricia Upna Orcid; Palacián Subiela, Jesús Francisco Upna Orcid; San-Segundo, A.; Ávila, D.; Tosar, Borja; Gómez-Hernández, A.; Gómez-Martínez, J.; Aimee, A. I. (MeteorNews, 2022)   Artículo / Artikulua  OpenAccess
      In this work we focus on the development of an artificial intelligence in the framework of the Southwestern Europe Meteor Network (SWEMN) and the SMART project. This is named AIMIE, and is capable of writing scientific ...
    • Organic carbon storage and dynamics as affected by the adoption of irrigation in a cultivated calcareous mediterranean soil 

      Antón Sobejano, Rodrigo Upna; Derrien, Delphine; Urmeneta Martín-Calero, Henar; Van der Heijden, Gregory; Enrique Martín, Alberto Upna Orcid; Virto Quecedo, Íñigo Upna Orcid (Frontiers Media, 2022)   Artículo / Artikulua  OpenAccess
      Irrigation is in the spotlight of land-use planning in semi-arid and sub-humid regions. It can be a promising practice to promote soil organic C storage (SOC), although it may also involve an increase in soil GHG emissions. ...
    • Simulation model for wire harness design in the car production line optimization using the SimPy library 

      Guerrero, R.; Serrano Hernández, Adrián Upna Orcid; Pascual Cornago, Jose Antonio; Faulín Fajardo, Francisco Javier (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The automotive industry is one of the most important economic sectors in the world. At the beginning, vehicles only had mechanical components, so the use of an automotive wire harness was not indispensable. Cars today are ...
    • Identifying extreme COVID-19 mortality risks in English small areas: a disease cluster approach 

      Adin Urtasun, Aritz Upna Orcid; Congdon, P.; Santafé Rodrigo, Guzmán Upna Orcid; Ugarte Martínez, María Dolores (Springer, 2022)   Artículo / Artikulua  OpenAccess
      The COVID-19 pandemic is having a huge impact worldwide and has highlighted the extent of health inequalities between countries but also in small areas within a country. Identifying areas with high mortality is important ...
    • Replacing pooling functions in Convolutional Neural Networks by linear combinations of increasing functions 

      Rodríguez Martínez, Iosu Upna Orcid; Lafuente López, Julio Upna Orcid; Santiago, Regivan H.N.; Pereira Dimuro, Graçaliz Upna Orcid; Herrera, Francisco; Bustince Sola, Humberto Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Traditionally, Convolutional Neural Networks make use of the maximum or arithmetic mean in order to reduce the features extracted by convolutional layers in a downsampling process known as pooling. However, there is no ...
    • Teacher degree students attitudes towards STEM activities in two spanish universities 

      Lasa Oyarbide, Aitzol Upna; Iribas, Haritz; Belletich Ruiz, Olga Upna Orcid; Rodríguez Wilhelmi, Miguel (Universidade do Porto, 2022)   Artículo / Artikulua  OpenAccess
      The attempt to train undergraduate primary school teachers in STEM skills faces an evident handicap, since students enrolling Teacher Degrees usually have humanistic secondary school backgrounds. Attitudes towards STEM on ...
    • The southwestern Europe meteor network: remarkable bolides recorded from march to may 2022 

      Madiedo, J. M.; Ortiz, J. L.; Izquierdo, J.; Santos-Sanz, P.; Aceituno, J.; Guindos, E. de; Yanguas Sayas, Patricia Upna Orcid; Palacián Subiela, Jesús Francisco Upna Orcid; San Segundo, A.; Ávila, D.; Tosar, B.; Gómez-Hernández, A.; Gómez-Martínez, J.; García, A.; Aimee, A. I. (meteornews.net, 2022)   Artículo / Artikulua  OpenAccess
      Some of the remarkable bolides spotted in the framework of the Southwestern Europe Meteor Network from March to May 2022 are described here. These have been observed from the Iberian Peninsula. Their absolute magnitude ...
    • Medicago sativa and Medicago truncatula show contrasting root metabolic responses to drought 

      Echeverría Obanos, Andrés Upna Orcid; Larrainzar Rodríguez, Estíbaliz Upna Orcid; Li, Weiqiang; Watanabe, Yasuko; Sato, Muneo; Tran, Cuong Duy; Moler Cuiral, José Antonio Upna Orcid; Hirai, Masami; Sawada, Yuji; Tran, Lam-Son; González de Andrés, Ester Upna Orcid (Frontiers Media, 2021)   Artículo / Artikulua  OpenAccess
      Drought is an environmental stressor that affects crop yield worldwide. Understandingplant physiological responses to stress conditions is needed to secure food in futureclimate conditions. In this study, we applied a ...
    • Improving motor imagery classification during induced motor perturbations 

      Vidaurre, Carmen Upna Orcid; Jorajuría, Tania Upna Orcid; Ramos Murguialday, Ander; Müller, Klaus Robert; Gómez Fernández, Marisol Upna Orcid; Nikulin, Vadim V. (IOP Publishing, 2021)   Artículo / Artikulua  OpenAccess
      Objective. Motor imagery is the mental simulation of movements. It is a common paradigm to design brain-computer interfaces (BCIs) that elicits the modulation of brain oscillatory activity similar to real, passive and ...
    • N-dimensional admissibly ordered interval-valued overlap functions and its influence in interval-valued fuzzy rule-based classification systems 

      Asmus, Tiago Upna Orcid; Sanz Delgado, José Antonio Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; Bedregal, Benjamin Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid; Bustince Sola, Humberto Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      Overlap functions are a type of aggregation functions that are not required to be associative, generally used to indicate the overlapping degree between two values. They have been successfully used as a conjunction operator ...
    • Monitoring rainfed alfalfa growth in semiarid agrosystems using Sentinel-2 imagery 

      Echeverría Obanos, Andrés Upna Orcid; Urmeneta, Alejandro; González de Audícana Amenábar, María Upna Orcid; González de Andrés, Ester Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      The aim of this study was to assess the utility of Sentinel-2 images in the monitoring of the fractional vegetation cover (FVC) of rainfed alfalfa in semiarid areas such as that of Bardenas Reales in Spain. FVC was sampled ...
    • On certain subspaces of p for 0 < p ≤ 1 and their applications to conditional quasi-greedy bases in p-Banach spaces 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L.; Wojtaszczyk, Przemyslaw (Springer, 2021)   Artículo / Artikulua  OpenAccess
      We construct for each 0<p≤1 an infinite collection of subspaces of ℓp that extend the example of Lindenstrauss (Bull. Acad. Polon. Sci. Sér. Sci. Math. Astronom. Phys. 12, 539–542, 1964) of a subspace of ℓ1 with no ...