Now showing items 19-38 of 85

    • d-Choquet integrals: Choquet integrals based on dissimilarities 

      Bustince Sola, Humberto Upna; Mesiar, Radko; Fernández Fernández, Francisco Javier Upna; Galar Idoate, Mikel Upna; Paternain Dallo, Daniel Upna; Altalhi, A. H.; Pereira Dimuro, Graçaliz Upna; Bedregal, Benjamin; Takáč, Zdenko (Elsevier, 2020)   Artículo / Artikulua
      The paper introduces a new class of functions from [0,1]n to [0,n] called d-Choquet integrals. These functions are a generalization of the 'standard' Choquet integral obtained by replacing the difference in the definition ...
    • Desarrollo del razonamiento algebraico elemental mediante tareas de recuento con patrones 

      Gaita, Rosa; Wilhelmi, Miguel R. Upna (UNESP - Universidade Estadual Paulista (Brasil), 2019)   Artículo / Artikulua  OpenAccess
      Las tareas de recuento con patrones son un contexto privilegiado para el desarrollo del razonamiento algebraico. La complejidad ontosemiótica de las tareas permite identificar procesos de estudio para hacer progresar el ...
    • Dynamics in the charged restricted circular three-body problem 

      Palacián Subiela, Jesús Francisco Upna; Vidal Díaz, Claudio; Vidarte, Jhon; Yanguas Sayas, Patricia Upna (Springer US, 2018)   Artículo / Artikulua  OpenAccess
      The existence and stability of periodic solutions for different types of perturbations associated to the Charged Restricted Circular Three Body Problem (shortly, CHRCTBP) is tackled using reduction and averaging theories ...
    • Effect of thermal stress on tissue ultrastructure and metabolite profiles during initiation of Radiata pine somatic embryogenesis 

      Castander Olarieta, Ander; Montalbán, Itziar A.; Oliveira, Eliana de Medeiros; Dell'Aversana, Emilia; D'Amelia, Luisa; Carillo, Petronia; Steiner, Neusa; Fraga, Hugo Pacheco de Freitas; Guerra, Miguel Pedro; Goicoa Mangado, Tomás Upna; Ugarte Martínez, María Dolores Upna (Frontiers Media, 2019)   Artículo / Artikulua  OpenAccess
      Climate change will inevitably lead to environmental variations, thus plant drought tolerance will be a determinant factor in the success of plantations and natural forestry recovery. Some metabolites, such as soluble ...
    • Effects of a soft-core coulomb potential on the dynamics of a hydrogen atom near a metal surface 

      Iñarrea, Manuel; Lanchares, Víctor; Palacián Subiela, Jesús Francisco Upna; Pascual, Ana Isabel; Salas, José Pablo; Yanguas Sayas, Patricia Upna (Elsevier, 2019)   Artículo / Artikulua
      The goal of this paper is to investigate the effects that the replacement of the Coulomb potential by a soft-core Coulomb potential produces in the classical dynamics of a perturbed Rydberg hydrogen atom. As example, we ...
    • Efficient SSP low-storage Runge-Kutta methods 

      Roldán Marrodán, Teodoro Upna; Higueras Sanz, Inmaculada Upna (2019)   Artículo / Artikulua  OpenAccess
      In this paper we study the efficiency of Strong Stability Preserving (SSP) Runge-Kutta methods that can be implemented with a low number of registers using their Shu-Osher representation. SSP methods have been studied ...
    • Embeddability of ℓp and bases in Lipschitz free p-spaces for 0 < p ≤ 1 

      Albiac Alesanco, Fernando José Upna; Ansorena, José L.; Cúth, Marek; Doucha, Michal (Elsevier, 2020)   Artículo / Artikulua
      Our goal in this paper is to continue the study initiated by the authors in of the geometry of the Lipschitz free p-spaces over quasimetric spaces for 0 < p ≤ 1, denoted Fp(M). Here we develop new techniques to show that, ...
    • Enhancing sensorimotor BCI performance with assistive afferent activity: an online evaluation 

      Vidaurre, Carmen; Ramos Murguialday, Ander; Haufe, Stefan; Gómez Fernández, Marisol Upna; Müller, Klaus Robert; Nikulin, Vadim V. (Elsevier, 2019)   Artículo / Artikulua
      An important goal in Brain-Computer Interfacing (BCI) is tofind and enhance procedural strategies for users for whom BCI control is not sufficiently accurate. To address this challenge, we conducted offline analyses and ...
    • Epidemiology of non-steroidal anti-inflammatory drugs consumption in Spain. The MCC-Spain study 

      Gómez Acebo, Inés; Dierssen Sotos, Trinidad; Pedro, María de; Pérez Gómez, Beatriz; Castaño Vinyals, Gemma; Fernández Villa, Tania; Palazuelos Calderón, Camilo; Amiano, Pilar; Etxeberria Andueza, Jaione Upna (BMC, 2018)   Artículo / Artikulua  OpenAccess
      Background: Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used despite their risk of gastrointestinal bleeding or cardiovascular events. We report the profile of people taking NSAIDs in Spain, and we include ...
    • An evolutionary underbagging approach to tackle the survival prediction of trauma patients: a case study at the Hospital of Navarre 

      Sanz Delgado, José Antonio Upna; Galar Idoate, Mikel Upna; Bustince Sola, Humberto Upna; Belzunegui Otano, Tomás Upna (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Survival prediction systems are used among emergency services at hospitals in order to measure their quality objectively. In order to do so, the estimated mortality rate given by a prediction model is compared with the ...
    • Experimental investigation of the particle oscillation instability in a single-axis acoustic levitator 

      Andrade, Marco Aurélio Brizzotti; Polychronopoulos, Spyros; Memoli, Gianluca; Marzo Pérez, Asier Upna (AIP Publishing, 2019)   Artículo / Artikulua  OpenAccess
      Single-axis acoustic levitators are employed in biomedicine, chemistry and physics experiments due to their ability to trap in mid-air objects of a wide range of materials and sizes. Although this type of levitator has ...
    • Filling missing data and smoothing altered data in satellite imagery with a spatial functional procedure 

      Militino, Ana F. Upna; Ugarte Martínez, María Dolores Upna; Montesino San Martín, Manuel (Springer, 2019)   Artículo / Artikulua
      Outliers and missing data are commonly found in satellite imagery. These are usually caused by atmospheric or electronic failures, hampering the correct monitoring of remote-sensing data. To avoid distorted data, we propose ...
    • From fuzzy sets to interval-valued and Atanassov intuitionistic fuzzy sets: a unified view of different axiomatic measures 

      Couso, Inés; Bustince Sola, Humberto Upna (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      We examine a broad collection of axiomatic definitions from various and diverse contexts, within the domain of fuzzy sets. We evaluate their respective extensions to the case of interval-valued fuzzy sets and intuitionistic ...
    • Funções de agregação baseadas em integral de Choquet aplicadas em redimensionalização de imagens 

      Bueno, Jéssica C. S.; Dias, Camila A.; Pereira Dimuro, Graçaliz Upna; Borges, Eduardo N.; Botelho, Silvia S. C.; Mattos, Viviane L. D. de; Bustince Sola, Humberto Upna (Universidade Passo Fundo, 2019)   Artículo / Artikulua  OpenAccess
      The increasing data volume, coupled with the high complexity of these data, has generated the need to develop increasingly efficient knowledge extraction techniques, both in computational cost and precision. Most of the ...
    • Geometric multigrid methods for Darcy–Forchheimer flow in fractured porous media 

      Arrarás Ventura, Andrés; Gaspar, F. J.; Portero Egea, Laura Upna; Rodrigo, C. (Elsevier, 2019)   Artículo / Artikulua
      In this paper, we present a monolithic multigrid method for the efficient solution of flow problems in fractured porous media. Specifically, we consider a mixed-dimensional model which couples Darcy flow in the porous ...
    • Geometrical aggregation of finite fuzzy sets 

      Campión Arrastia, María Jesús Upna; García Catalán, Olga Raquel Upna; Induráin Eraso, Esteban Upna; Lizasoain Iriso, María Inmaculada Upna; Raventós Pujol, Armajac Upna; Valero, Óscar (Elsevier, 2018)   Artículo / Artikulua
      A fuzzy set on a finite universe can be interpreted as a vector in a unit cube. This gives rise to a huge variety of approaches in order to aggregate finite fuzzy sets or to modify a given one. We analyze several geometrical ...
    • Gongora-ko (Nafarroa) Jauregizaharra jauregiaren datazio dendrokronologikoa 

      Lizeaga Rica, Joseba Sabin (Sociedad de Ciencias Aranzadi, 2018)   Artículo / Artikulua  OpenAccess
      En este trabajo se presenta la datación dendrocronológica del palacio Jauregizaharra de Gongora (Navarra). Desde el aspecto dendrocronológico se han construido 3 cronologías de referencia, y, desde el punto de vista de la ...
    • The hidden value of intangibles: do CEO characteristics matter? 

      Garcés Galdeano, Lucía Upna; García Olaverri, Carmen Upna (Emerald, 2019)   Artículo / Artikulua  OpenAccess
      Purpose: A great deal of research has examined the relationship between a single CEO attribute and a single measure of firm performance; no attempts have been made to integrate them to create a more global vision of both. ...
    • Hyperspectral imaging to assess the presence of powdery mildew (Erysiphe necator) in cv. Carignan Noir grapevine bunches 

      Pérez Roncal, Claudia; López Maestresalas, Ainara Upna; López Molina, Carlos Upna; Jarén Ceballos, Carmen Upna; Urrestarazu Vidart, Jorge Upna; Santesteban García, Gonzaga Upna; Arazuri Garín, Silvia Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Powdery mildew is a worldwide major fungal disease for grapevine, which adversely affects both crop yield and produce quality. Disease identification is based on visible signs of a pathogen once the plant has already been ...
    • Immediate brain plasticity after one hour of brain-computer interface (BCI) 

      Nierhaus, Till; Vidaurre, Carmen; Sannelli, Claudia; Mueller, Klaus-Robert; Villringer, Arno (Wiley, 2019)   Artículo / Artikulua  OpenAccess
      A brain-computer-interface (BCI) allows humans to control computational devices using only neural signals. However, it is still an open question, whether performing BCI also impacts on the brain itself, i.e. whether brain ...