• From fuzzy sets to interval-valued and Atanassov intuitionistic fuzzy sets: a unified view of different axiomatic measures 

      Couso, Inés; Bustince Sola, Humberto Upna Orcid (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 ...
    • Fully metallic Luneburg metalens antenna in gap waveguide technology at V-band 

      Pérez Quintana, Dayan Upna Orcid; Bilitos, Christos; Ruiz-García, Jorge; Ederra Urzainqui, Íñigo Upna Orcid; Teniente Vallinas, Jorge Upna Orcid; González-Ovejero, David; Beruete Díaz, Miguel Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      This article presents the design of a flat Luneburg metalens antenna at V-band using gap waveguide (GW) technology. The metalens consists of a parallel plate waveguide (PPW) loaded with metallic pins whose height is ...
    • Future smartphone: MIMO antenna system for 5G mobile terminals 

      Mujeeb, Abdullah; Altaf, Ahsan; Anjum, Muhammad Rizwan; Arain, Zulfiqar Ali; Jamali, Abdul Aleem; Alibakhshikenari, Mohammad; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      In this article, an inverted L-shaped monopole eight elements Multiple Input Multiple Output (MIMO) antenna system is presented. The multi-antenna system is designed on a low cost 0.8 mm thick FR4 substrate having dimensions ...
    • FUZZ-EQ: a data equalizer for boosting the discrimination power of fuzzy classifiers 

      Uriz Martín, Mikel Xabier Upna Orcid; Elkano Ilintxeta, Mikel Upna Orcid; Bustince Sola, Humberto Upna Orcid; Galar Idoate, Mikel Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      The definition of linguistic terms is a critical part of the construction of any fuzzy classifier. Fuzzy partitioning methods (FPMs) range from simple uniform partitioning to sophisticated optimization algorithms. In this ...
    • Fuzzy rule-based classification systems for multi-class problems using binary decomposition strategies: on the influence of n-dimensional overlap functions in the fuzzy reasoning method 

      Elkano Ilintxeta, Mikel Upna Orcid; Galar Idoate, Mikel Upna Orcid; Sanz Delgado, José Antonio Upna Orcid; Bustince Sola, Humberto Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Multi-class classification problems appear in a broad variety of real-world problems, e.g., medicine, genomics, bioinformatics, or computer vision. In this context, decomposition strategies are useful to increase the ...
    • Gain-boosted super class AB OTAs based on nested local feedback 

      Beloso Legarra, Javier Upna Orcid; Cruz Blas, Carlos Aristóteles de la Upna Orcid; López Martín, Antonio Upna Orcid; Ramírez-Angulo, Jaime (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      A new approach to design super class AB operational transcon-ductance amplifiers (OTAs) with enhanced large-signal and small-signal performance is presented. It is based on employing two nested positive and negative feedback ...
    • Gamification and a low-cost laboratory equipment aimed to boost vapor compresion refrigeration learning 

      Aranguren Garacochea, Patricia Upna Orcid; Sánchez García-Vacas, Daniel; Casi Satrústegui, Álvaro Upna Orcid; Araiz Vega, Miguel Upna Orcid; Catalán Ros, Leyre Upna Orcid (OmniaScience, 2022)   Artículo / Artikulua  OpenAccess
      The nowadays European educational framework boosts applying the learned theoretical concepts to real situations. Hence, practice sessions are key resources to present students direct applications of the theoretical concepts ...
    • Gamification for photonics students: labescape 

      Pérez Herrera, Rosa Ana Upna Orcid; Tainta Ausejo, Santiago Upna Orcid; Elosúa Aguado, César Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      The idea of utilizing game elements in non-gaming situations has sparked a lot of attention in recent years, especially in topics such as education and training. Game-based techniques appear to be an increasing trend in a ...
    • Gamma radiation-induced effects over an optical fiber laser: towards new sensing applications 

      Pérez Herrera, Rosa Ana Upna Orcid; Stancalie, Andrei; Cabezudo Sánchez-Valverde, Pablo Miguel; Sporea, Dan; López-Amo Sáinz, Manuel Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      In the present work, the effect of gamma radiation on the performance of different types of erbium-doped fibers (EDFs) when they are used in a fiber ring cavity (FRC) configuration is studied. Several pieces of commercial ...
    • Gap waveguide topology with reduced height pins for millimeter-wave components 

      Santiago Arriazu, David; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María; Arregui Padilla, Iván Upna Orcid (URSI Publications, 2022)   Artículo / Artikulua  OpenAccess
      A new topology for groove gap waveguide (GGW) technology is proposed to ease its manufacturing process by computer numerical control (CNC) milling. GGW technology consists of two metal plates, where one of them presents a ...
    • A gap waveguide-based compact rectangular waveguide to a packaged microstrip inline transition 

      Pérez Escudero, José Manuel Upna Orcid; Torres García, Alicia E. Upna Orcid; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      In this paper two different simple to design and easy to manufacturing transitions from a microstrip to rectangular waveguide based on ridge and groove gap waveguides are studied. The first one is based on a combination ...
    • Gas detection using LMR-based optical fiber sensors 

      Dreyer, Uilian José; Ozcariz Celaya, Aritz Upna Orcid; Ascorbe Muruzabal, Joaquín Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; Vitoria Pascual, Ignacio Upna Orcid; Martelli, Cicero; Cardozo da Silva, Jean Carlos; Ruiz Zamarreño, Carlos Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      This work presents a first approach to the utilization of Lossy Mode Resonance (LMR) based optical fiber sensors for gas detection. The optical sensor is based on a SnO2 thin-film fabricated onto the core of cladding ...
    • Gas sensor based on lossy mode resonances by means of thin graphene oxide films fabricated onto planar coverslips 

      Vitoria Pascual, Ignacio Upna Orcid; Gallego Martínez, Elieser Ernesto; Melendi Espina, Sonia; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Matías Maestro, Ignacio Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The use of planar waveguides has recently shown great success in the field of optical sensors based on the Lossy Mode Resonance (LMR) phenomenon. The properties of Graphene Oxide (GO) have been widely exploited in various ...
    • General overlap functions 

      Miguel Turullols, Laura de Upna Orcid; Gómez, Daniel; Tinguaro, Javier; Montero, Javier; Bustince Sola, Humberto Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; Sanz, Jose Antonio (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      As a generalization of bivariate overlap functions, which measure the degree of overlapping (intersection for non-crisp sets) of n different classes, in this paper we introduce the concept of general overlap functions. We ...
    • A generalization of the Sugeno integral to aggregate interval-valued data: an application to brain computer interface and social network analysis 

      Fumanal Idocin, Javier Upna Orcid; Takáč, Zdenko; Horanská, Lubomíra; Asmus, Tiago Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; Vidaurre, Carmen; Fernández Fernández, Francisco Javier Upna Orcid; Bustince Sola, Humberto Upna Orcid (Elsevier, 2022)   Artículo / Artikulua
      Intervals are a popular way to represent the uncertainty related to data, in which we express the vagueness of each observation as the width of the interval. However, when using intervals for this purpose, we need to use ...
    • Generalized approach to quantum interference in lossy N-port devices via a singular value decomposition 

      Hernández Martínez, Osmery; Liberal Olleta, Íñigo Upna Orcid (Optica, 2022)   Artículo / Artikulua  OpenAccess
      Modeling quantum interference in the presence of dissipation is a critical aspect of quantum technologies. Including dissipation into the model of a linear device enables for assessing the detrimental impact of photon loss, ...
    • Generalized decomposition integral 

      Horanská, Lubomíra; Bustince Sola, Humberto Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid; Mesiar, Radko (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      In this paper we propose two different generalizations of the decomposition integral introduced by Even and Lehrer. We modify the product operator merging a given capacity and the decomposition coefficients by some more ...
    • Generalizing max pooling via (a, b)-grouping functions for convolutional neural networks 

      Rodríguez Martínez, Iosu Upna Orcid; Asmus, Tiago Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; Herrera, Francisco; Takáč, Zdenko; Bustince Sola, Humberto Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      Due to their high adaptability to varied settings and effective optimization algorithm, Convolutional Neural Networks (CNNs) have set the state-of-the-art on image processing jobs for the previous decade. CNNs work in a ...
    • Generation of lossy mode resonances (LMR) using perovskite nanofilms 

      Armas, Dayron; Matías Maestro, Ignacio Upna Orcid; López-González, M. Carmen; Ruiz Zamarreño, Carlos Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; Del Villar, Ignacio Upna Orcid; Romero, Beatriz (Chinese Academy of Sciences, 2024)   Artículo / Artikulua  OpenAccess
      The results presented here show for the first time the experimental demonstration of the fabrication of lossy mode resonance (LMR) devices based on perovskite coatings deposited on planar waveguides. Perovskite thin films ...
    • Generation of lossy mode resonances in a broadband range with multilayer coated coverslips optimized for humidity sensing 

      Bohórquez Navarro, Dina Luz Upna Orcid; Del Villar, Ignacio Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      Coverslips deposited with a metallic oxide can be employed for generating lossy mode resonances by lateral incidence of light on the coverslip. Here it is demonstrated that with copper oxide the fading observed with other ...

      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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