Now showing items 10-29 of 42

    • 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 ...
    • 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 ...
    • 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 ...
    • 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.; Dimuro, Graçaliz P.; 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 ...
    • 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 ...
    • Impact of successful treatment with directacting antiviral agents on health-related quality of life in chronic hepatitis C patients 

      Juanbeltz Zurbano, Regina; Martínez Baz, Iván Upna; San Miguel Elcano, Ramón; Goñi Esarte, Silvia; Cabasés Hita, Juan Manuel Upna; Castilla Catalán, Jesús (Public Library of Science, 2018)   Artículo / Artikulua  OpenAccess
      Background. Direct-acting antivirals (DAA) have demonstrated high efficacy to achieve sustained virological response (SVR) in chronic hepatitis C patients. We aim to assess the change in healthrelated quality of life (HRQoL) ...
    • Improving the performance of fuzzy rule-based classification systems based on a nonaveraging generalization of CC-integrals named C-F1F2-integrals 

      Lucca, Giancarlo; Pereira Dimuro, Graçaliz Upna; Fernández Fernández, Francisco Javier Upna; Bustince Sola, Humberto Upna; Bedregal, Benjamin; Sanz Delgado, José Antonio Upna (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      A key component of fuzzy rule-based classification systems (FRBCS) is the fuzzy reasoning method (FRM) since it infers the class predicted for new examples. A crucial stage in any FRM is the way in which the information ...
    • The interval-valued Choquet integral based on admissible permutations 

      Paternain Dallo, Daniel Upna; Miguel Turullols, Laura de Upna; Ochoa Lezaun, Gustavo Upna; Lizasoain Iriso, María Inmaculada Upna; Mesiar, Radko; Bustince Sola, Humberto Upna (IEEE, 2018)   Artículo / Artikulua
      Aggregation or fusion of interval data is not a trivial task, since the necessity of arranging data arises in many aggregation functions, such as OWA operators or the Choquet integral. Some arranging procedures have been ...
    • The law of O-conditionality for fuzzy implications constructed from overlap and grouping functions 

      Pereira Dimuro, Graçaliz Upna; Bedregal, Benjamin; Fernández Fernández, Francisco Javier Upna; Sesma Sara, Mikel Upna; Pintor Borobia, Jesús María Upna; Bustince Sola, Humberto Upna (Elsevier, 2019)   Artículo / Artikulua
      Overlap and grouping functions are special kinds of non necessarily associative aggregation operators proposed for many applications, mainly when the associativity property is not strongly required. The classes of overlap ...
    • Mixture functions and their monotonicity 

      Špirková, Jana; Beliakov, Gleb Upna; Bustince Sola, Humberto Upna; Fernández Fernández, Francisco Javier Upna (Elsevier, 2019)   Artículo / Artikulua
      We consider mixture functions, which are a type of weighted averages for which the corresponding weights are calculated by means of appropriate continuous functions of their inputs. In general, these mixture function need ...
    • Multimodal fuzzy fusion for enhancing the motor-imagery-based brain computer interface 

      Ko, Li-Wei; Lu, Yi-Chen; Bustince Sola, Humberto Upna; Chang, Yu-Cheng; Chang, Yang; Fernández Fernández, Francisco Javier Upna; Wang, Yu-Kai; Sanz Delgado, José Antonio Upna; Pereira Dimuro, Graçaliz Upna; Lin, Chin-Teng (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Brain–computer interface technologies, such as steady-state visually evoked potential, P300, and motor imagery are methods of communication between the human brain and the external devices. Motor imagery–based brain–computer ...
    • Multipoint flux mixed finite element methods for slightly compressible flow in porous media 

      Arrarás Ventura, Andrés; Portero Egea, Laura Upna (Elsevier, 2019)   Artículo / Artikulua
      In this paper, we consider multipoint flux mixed finite element discretizations for slightly compressible Darcy flow in porous media. The methods are formulated on general meshes composed of triangles, quadrilaterals, ...
    • Normalization through invariants in n-dimensional Kepler problems 

      Meyer, Kenneth Ray; Palacián Subiela, Jesús Francisco Upna; Yanguas Sayas, Patricia Upna (Pleiades Publishing, 2018)   Artículo / Artikulua  OpenAccess
      We present a procedure for the normalization of perturbed Keplerian problems in n dimensions based on Moser regularization of the Kepler problem and the invariants associated to the reduction process. The approach allows ...
    • The null space of fuzzy inclusion measures 

      Couso, Inés; Bustince Sola, Humberto Upna; Fernández Fernández, Francisco Javier Upna; Sánchez, Luciano (IEEE, 2019)   Artículo / Artikulua
      Some formal relationships between the different axiomatic definitions of inclusion measure are analysed. In particular, the links between the different proposals about the null-space (the collection of pairs associated ...
    • On a particular class of Meijer's G functions appearing in fractional calculus 

      Karp, D. B.; López García, José Luis Upna (Academic Publications, 2018)   Artículo / Artikulua  OpenAccess
      In this paper we investigate the Meijer G-function G p+1,p+1 p,1 which, for certain parameter values, represents the Riemann-Liouville fractional integral of the Meijer-Nørlund function G p,p. p,0 The properties of this ...