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Mostrando ítems 197-216 de 379

    • Motor-imagery-based brain-computer interface using signal derivation and aggregation functions 

      Fumanal Idocin, Javier Upna Orcid; Wang, Yu-Kai; Lin, Chin-Teng; Fernández Fernández, Francisco Javier Upna Orcid; Sanz Delgado, José Antonio Upna Orcid; Bustince Sola, Humberto Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      Brain Computer Interface (BCI) technologies are popular methods of communication between the human brain and external devices. One of the most popular approaches to BCI is Motor Imagery (MI). In BCI applications, the ...

    • Multi-criteria simulation-optimization analysis of usage of automated parcel lockers: a practical approach 

      Sawik, Bartosz; Serrano Hernández, Adrián Upna Orcid; Muro, Álvaro; Faulín Fajardo, Javier Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The rapid growth of electronic commerce is having an impact on the way urban logistics are organized. In metropolitan settings, the last-mile delivery problem, i.e., the problem regarding the final stage of delivering a ...

    • A multi-splitting method to solve 2D parabolic reaction-diffusion singularly perturbed systems 

      Clavero, Carmelo; Jorge Ulecia, Juan Carlos Upna Orcid (Elsevier, 2023)   Artículo / Artikulua
      In this paper we design and analyze a numerical method to solve a type of reaction-diffusion 2D parabolic singularly perturbed systems. The method combines the central finite difference scheme on an appropriate piecewise ...

    • The multidimensional conception of social exclusion and the aggregation dilemma: a solution proposal based on multiple correspondence analysis 

      Laparra Navarro, Miguel Upna Orcid; Zugasti Mutilva, Nerea Upna Orcid; García Lautre, Ignacio Upna Orcid (Springer, 2021)   Artículo / Artikulua  OpenAccess
      The main objective of the article is twofold. On the one hand, it aims to offer a critical analysis of the different operationalizations of the concept of social exclusion at the international level, including reflection ...

    • Multidistances and inequality measures on abstract sets: an axiomatic approach 

      Campión Arrastia, María Jesús Upna Orcid; Díaz, Irene; Induráin Eraso, Esteban Upna Orcid; Martín, Javier; Mayor, Gaspar; Montes Rodríguez, Susana; Raventós Pujol, Armajac Upna Orcid (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      Starting from the notion of a multidistance, we formalize, through a suitable system of axioms, the concept of an inequality measure defined on a nonempty set with no additional structure implemented a priori. Among ...

    • Multigrid solvers for multipoint flux approximations of the Darcy problem on rough quadrilateral grids 

      Arrarás Ventura, Andrés Upna Orcid; Gaspar, F. J.; Portero Egea, Laura Upna Orcid; Rodrigo, C. (Springer, 2020)   Artículo / Artikulua  OpenAccess
      In this work, an efficient blackbox-type multigrid method is proposed for solving multipoint flux approximations of the Darcy problem on logically rectangular grids. The approach is based on a cell-centered multigrid ...

    • Multimodal fuzzy fusion for enhancing the motor-imagery-based brain computer interface 

      Ko, Li-Wei; Lu, Yi-Chen; Bustince Sola, Humberto Upna Orcid; Chang, Yu-Cheng; Chang, Yang; Fernández Fernández, Francisco Javier Upna Orcid; Wang, Yu-Kai; Sanz Delgado, José Antonio Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; 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 Upna Orcid; Portero Egea, Laura Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      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, ...

    • Multiscale edge detection using first-order derivative of anisotropic Gaussian kernels 

      Wang, Gang; López Molina, Carlos Upna Orcid; Baets, Bernard de (Springer, 2019)   Artículo / Artikulua  OpenAccess
      Spatially scaled edges are ubiquitous in natural images. To better detect edges with heterogeneous widths, in this paper, we propose a multiscale edge detection method based on first-order derivative of anisotropic Gaussian ...

    • A multistate model and its standalone tool to predict hospital and ICU occupancy by patients with COVID-19 

      Lafuente, Miguel; López, Francisco Javier; Mateo, Pedro; Cebrián, Ana Carmen; Asín, Jesús; Moler Cuiral, José Antonio Upna Orcid; Borque-Fernando, Ángel; Esteban, Luis Mariano; Pérez-Palomares, Ana; Sanz, Gerardo (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      Objective: This study aims to build a multistate model and describe a predictive tool for estimating the daily number of intensive care unit (ICU) and hospital beds occupied by patients with coronavirus 2019 disease ...

    • Multivariate Bayesian spatio-temporal P-spline models to analyze crimes against women 

      Vicente Fuenzalida, Gonzalo; Goicoa Mangado, Tomás; Ugarte Martínez, María Dolores Upna Orcid (Oxford University Press, 2021)   Artículo / Artikulua  OpenAccess
      Univariate spatio-temporal models for areal count data have received great attention in recent years for estimating risks. However, models for studying multivariate responses are less commonly used mainly due to the ...

    • 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 ...

    • Nested formulation paradigms for induced ordered weighted averaging aggregation for decision‐making and evaluation 

      Zhu, Chen; Jin, LeSheng; Mesiar, Radko; Yager, Ronald R.; Paternain Dallo, Daniel Upna Orcid; Bustince Sola, Humberto Upna Orcid (Wiley, 2019)   Artículo / Artikulua  OpenAccess
      Existing extensions to Yager's ordered weighted aver-aging (OWA) operators enlarge the application rangeand to encompass more principles and properties relatedto OWA aggregation. However, these extensions do notprovide a ...

    • Neuro-inspired edge feature fusion using Choquet integrals 

      Marco Detchart, Cedric Upna Orcid; Lucca, Giancarlo; López Molina, Carlos Upna Orcid; Miguel Turullols, Laura de Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; Bustince Sola, Humberto Upna Orcid (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      It is known that the human visual system performs a hierarchical information process in which early vision cues (or primitives) are fused in the visual cortex to compose complex shapes and descriptors. While different ...

    • New algorithm for the elucidation of functional properties of gelatin-based materials 

      Leceta, Itsaso; Alcalde, Cristina; Urdanpilleta, Marta; Guerrero, Pedro; Caba, Koro de la; Burusco Juandeaburre, Ana Upna Orcid (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      In the present work, fish gelatin was employed to develop renewable and biodegradable materials, reducing environmental problems associated with conventional petroleum-based materials. Glycerol was used as plasticizer and ...

    • New analytic representations of the hypergeometric functions p+1Fp 

      López García, José Luis Upna Orcid; Palacios Herrero, Pablo Upna Orcid; Pagola Martínez, Pedro Jesús Upna (Springer, 2021)   Artículo / Artikulua  OpenAccess
      The power series expansions of the hypergeometric functions p+1Fp (a,b1,…,bp;c1,…,cp;z) converge either inside the unit disk |z|<1 or outside this disk |z|>1. Nørlund’s expansion in powers of z/(z−1) converges in the ...

    • A new family of aggregation functions for intervals 

      Díaz-Vázquez, Susana; Torres-Manzanera, Emilio; Rico, Noelia; Mesiar, Radko; Rodríguez Martínez, Iosu Upna Orcid; Lafuente López, Julio Upna Orcid; Díaz, Irene; Montes, Susana; Bustince Sola, Humberto Upna Orcid (Springer, 2024)   Artículo / Artikulua  OpenAccess
      Aggregation operators are unvaluable tools when different pieces of information have to be taken into account with respect to the same object. They allow to obtain a unique outcome when different evaluations are available ...

    • New fractional step Runge-Kutta-Nyström methods up to order three 

      Bujanda Cirauqui, Blanca Upna Orcid; Moreta, M. Jesús; Jorge Ulecia, Juan Carlos Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      Fractional Step Runge–Kutta–Nyströ (FSRKN) methods have been revealed to be an excellent option to integrate numerically many multidimensional evolution models governed by second order in time partial differential equations. ...

    • New parameters and Lebesgue-type estimates in greedy approximation 

      Albiac Alesanco, Fernando José Upna Orcid; Ansorena, José L.; Berná, Pablo M. (Cambridge University Press, 2022)   Artículo / Artikulua  OpenAccess
      The purpose of this paper is to quantify the size of the Lebesgue constants (𝑳𝑚)∞ 𝑚=1 associated with the thresholding greedy algorithm in terms of a new generation of parameters that modulate accurately some features ...

    • New recurrence relations for several classical families of polynomials 

      Ferreira González, Chelo Upna; López García, José Luis Upna Orcid; Pérez Sinusía, Ester Upna Orcid (Taylor and Francis, 2021)   Artículo / Artikulua  OpenAccess
      In this paper, we derive new recurrence relations for the following families of polynomials: nörlund polynomials, generalized Bernoulli polynomials, generalized Euler polynomials, Bernoulli polynomials of the second kind, ...
      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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