Recent Submissions

  • Along-the-path exponential integration for Floquet stability analysis of wind turbines 

    Ros Ganuza, Javier Upna Orcid; Olcoz Alonso, Álvaro; Plaza Puértolas, Aitor Upna Orcid (IOP Publishing, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Traditionally, stability assessment of wind turbines has been performed by eigenanalysis of the azimuthally-averaged linearized system after applying the Multi-Blade Coordinate (MBC) transformation. However, due to ...
  • Hybrid xerogels doped with Tb(III) and Eu (III) and a water soluble Pybox ligand 

    Cruz Quesada, Guillermo Upna Orcid; Espinal-Viguri, Maialen Upna Orcid; Garrido Segovia, Julián José Upna Orcid (2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Hybrid organic-inorganic siliceous materials (ORMOSiLs) are a key focus within the nanoscience area as they combine advantages of inorganic materials without losing characteristics intrinsic of organic molecules. In the ...
  • New hybrid organochlorinated xerogels 

    Cruz Quesada, Guillermo Upna Orcid; Espinal-Viguri, Maialen Upna Orcid; López Ramón, María Victoria; Garrido Segovia, Julián José Upna Orcid (2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Hybrid silica xerogels (HSXG) combine the properties of organic and inorganic components in the same material, which makes them promising and versatile candidates for multiple applications. These materials can be easily ...
  • Why using topological and analytical methods in aggregation of fuzzy preferences? 

    Campión Arrastia, María Jesús Upna Orcid; Induráin Eraso, Esteban Upna Orcid; Raventós Pujol, Armajac Upna Orcid (2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The Arrow’s Impossibility Theorem states that there is no function fusing individual preferences into a social one satisfying certain properties of 'common sense'. On the contrary, in some of the fuzzy extensions of the ...
  • Unexpected thresholds from independence of irrelevant alternatives in fuzzy arrow theorems 

    Raventós Pujol, Armajac Upna Orcid (2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    It is well known Arrow Theorem and its impact into Social Choice. It states that under an apparently mild set of conditions no rule fusing individual preferences into a social one is possible. In order to solve this ...
  • Mechanical sensitivity analysis of strain gauge configurations in the main shaft of wind turbines 

    Bacaicoa Díaz, Julen Upna Orcid; Iriarte Goñi, Xabier Upna Orcid; Aginaga García, Jokin Upna Orcid; Plaza Puértolas, Aitor Upna Orcid (IOP Publishing, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Wind turbines are reaching their remaining useful life, thus it is important to guarantee the well status of its components. A common way to check the status is to measure the loads on the Low Speed Shaft with strain gauges, ...
  • Lithium-ion battery model and experimental validation 

    Berrueta Irigoyen, Alberto Upna Orcid; Irigaray, Víctor; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A simple battery model is useful for: Sizing of the storage system for a particular application; Designing other elements connected to the battery; Managing the storage system operation. This poster consists on: Tests to ...
  • Hydrogen-lithium energy storage for a stand-alone microgrid 

    Berrueta Irigoyen, Alberto Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Sizing of the storage system for a stand-alone application: Satisfaction of technical requirements; Based on real data from an experimental microgrid; Long lifetime; Lowest price
  • Compensation of forecast error in large PV plants with battery storage: associated strategies 

    Marcos Álvarez, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Muñoz Escribano, Mikel Upna; García Solano, Miguel Upna Orcid; Marroyo Palomo, Luis Upna Orcid (2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    As penetration rates of utility-scale photovoltaics (PV) increases, large PV plants will participate in the daily wholesale electricity market in the same way that wind farms. Then, PV plant owner can receive some kind of ...
  • Static and dynamic characterization of a supercapacitor 

    Berrueta Irigoyen, Alberto Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Supercapacitors (SCs) have recently received a major boost as a result of the development of multiple applications, such as the electric vehicle and electric microgrids. Storage systems consisting of SCs combined with ...
  • Potencialidades del frijol caupí para la resiliencia al cambio climático en sistemas agrícolas locales 

    Santana-Baños, Yoerlandy; González García, Esther Upna Orcid; Ariz, Idoia Upna Orcid; Carrodeguas Díaz, Sergio (2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Las evidencias científicas sugieren tres usos fundamentales del frijol caupí, con agro-ecológicas y beneficios productivos, sociales y ambientales en los sistemas agrícolas locales; sin embargo, su rendimiento a nivel ...
  • Distributed opportunistic wireless mapping system towards smart city service provision 

    Villadangos Alonso, Jesús Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid; López Martín, Antonio Upna Orcid; Astrain Escola, José Javier Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The knowledge of wireless signal distribution within an urban scenario can provide useful information to users as well as to enhance connectivity and device operation or to perform municipal logistics based on crowd density ...
  • Náhuat language kinect application for museum 

    Pina Calafi, Alfredo Upna Orcid; Sánchez Campos, Walter; Rubio Navarro, Gabriel Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper presents a proposal to contribute to promote the dissemination and awaken the interest in the Náhuat Language. We have designed a Náhuat Language Interactive Kinect Application not only to promote the dissemination ...
  • On the generalizations of the Choquet integral for application in FRBCs 

    Lucca, Giancarlo; Borges, Eduardo N.; Berri, Rafael A.; Emmendorfer, Leonardo R.; Pereira Dimuro, Graçaliz Upna Orcid; Asmus, Tiago Upna Orcid (Springer, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    An effective way to cope with classification problems, among others, is by using Fuzzy Rule-Based Classification Systems (FRBCSs). These systems are composed by two main components, the Knowledge Base (KB) and the Fuzzy ...
  • University spin-offs: a case study on their characterization, challenges and entrepreneurship ecosystem 

    Anzola Román, Paula Upna Orcid; Bayona Sáez, Cristina Upna Orcid (Academic Publishing, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    University has moved away from the ‘ivory tower’ conceptualization that characterized it as an isolated and inexpugnable knowledge fortress. On the contrary, universities fully participate today of a system, acting the ...
  • Subjective evaluation of the localization performance of the spherical wavelet format compared to ambisonics 

    Eguinoa Cabrito, Rubén; San Martín Murugarren, Ricardo Upna Orcid; Arteaga, Daniel; Scaini, Davide (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A common goal of most spatial audio techniques is to reproduce the precise location and size of sound sources. Ambisonics is a well-established spatial audio technique that renders sound sources with increasing accuracy ...
  • Intelligent SDN-based multi-protocol selector for IoT-enabled NMT networks 

    Al-Rahamneh, Anas; Astrain Escola, José Javier Upna Orcid; López Iturri, Peio Upna Orcid; Picallo Guembe, Imanol Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    The popularity of the Internet of Things is increasing and it is being used in many commercial sectors, using customized technologies for specific environments. Applications and protocols, and the unique requirements of ...
  • Flat lens antenna using gap waveguide technology at millimeter waves 

    Pérez, Dayan Upna Orcid; Bilitos, Christos; Ruiz-García, J.; González-Ovejero, D.; Beruete Díaz, Miguel Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    In this paper, a flat lens antenna using Gap Waveguide (GW) technology working in the millimeter waves band was designed. The metamaterial lens is fed using a Groove Gap Waveguide (GGW) horn antenna in order to achieve a ...
  • Charge transfer in the Rydberg hydrogen atom metal surface interaction: a transition state approach 

    Salas, José Pablo; Iñarrea, Manuel; Lanchares, Víctor; Palacián Subiela, Jesús Francisco Upna Orcid; Pascual, Ana Isabel; Yanguas Sayas, Patricia Upna Orcid (2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    We study the classical dynamics of a hydrogen atom near a metallic surface in the presence of a uniform electric field. By continuation of families of periodic orbits and surfaces of section we show that, due to the electric ...
  • Chaos in the libration motion of an asymmetric non-rigid spacecraft 

    Iñarrea, Manuel; Lanchares, Víctor; Palacián Subiela, Jesús Francisco Upna Orcid; Pascual, Ana Isabel; Salas, José Pablo; Yanguas Sayas, Patricia Upna Orcid (2004)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    We study the libration motion dynamics of an asymmetric spacecraft in circular orbit under the influence of a gravity gradient torque

View more