• In-field energy performance of solar PV module made of UMG silicon 

      Guerra, Moisés R.; Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Pascual Miqueleiz, Julio María Upna Orcid (IEEE, 2022)   Artículo / Artikulua  OpenAccess
      Upgraded metallurgical grade silicon (UMG-Si) PV modules have failed to make their space in the PV market, which was partly to the uncertainty on their in-field performance that brings the wide disparity of results published ...
    • Incandescent temporal metamaterials 

      Vázquez Lozano, Juan Enrique; Liberal Olleta, Íñigo Upna Orcid (Nature Research, 2023)   Artículo / Artikulua  OpenAccess
      Regarded as a promising alternative to spatially shaping matter, time-varying media can be seized to control and manipulate wave phenomena, including thermal radiation. Here, based upon the framework of macroscopic quantum ...
    • Inclusion of a supercapacitor energy storage system in DFIG and full-converter PMSG wind turbines for inertia emulation 

      Berrueta Irigoyen, Alberto Upna Orcid; Sacristán Sillero, Javier; López Taberna, Jesús Upna Orcid; Rodríguez Izal, José Luis; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      The energy transition towards renewables must be accelerated to achieve climate targets. To do so, renewable power plants, such as wind power plants (WPPs) must replace conventional power plants (CPPs). Transmission System ...
    • Increasing surface plasmons propagation via photonic nanojets with periodically spaced 3D dielectric cuboids 

      Pacheco-Peña, Víctor Upna Orcid; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel Upna Orcid (MDPI, 2016)   Artículo / Artikulua  OpenAccess
      A structure based on periodically arranged 3D dielectric cuboids connected by photonic nanojets (PNJs) is proposed with the aim of increasing the propagation distance of surface plasmon polaritons (SPPs) at the telecom ...
    • Increasing the sensitivity of an optic level sensor with a wavelength and phase sensitive single-mode multimode single-mode (SMS) fiber structure 

      Fuentes Lorenzo, Omar Upna; Del Villar, Ignacio Upna Orcid; Vento, José R.; Socorro Leránoz, Abián Bentor Upna Orcid; Gallego Martínez, Elieser Ernesto; Corres Sanz, Jesús María Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      The sensitivity of a liquid level sensor based on a single-mode-multimode-single-mode fiber structure has been increased by hydrofluoric acid etching. The etching process was analyzed and monitored both theoretical and ...
    • Inertia transfer concept based general method for the determination of the base inertial parameters 

      Ros Ganuza, Javier Upna Orcid; Plaza Puértolas, Aitor Upna Orcid; Iriarte Goñi, Xabier Upna Orcid; Aginaga García, Jokin Upna Orcid (Springer, 2015)   Artículo / Artikulua  OpenAccess
      This paper presents a new algorithm to obtain the symbolic expressions of any of the possible base inertial parameter sets of a multibody system. Based on the ¿inertia transfer concept¿, a procedure is proposed to write a ...
    • Influence of control in cycling degradation when batteries perform PV ramp-rate control 

      González Moreno, Alejandro; Marcos Álvarez, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      This work studies the importance of the correct selection of control parameters in order to avoid unnecessary cycling in batteries when they perform PV smoothing. The classic ramp-rate control method (CRRC) is studied ...
    • Influence of temperature and aging on the thermal contact resistance in thermoelectric devices 

      Rodríguez García, Antonio Upna Orcid; Pérez Artieda, Miren Gurutze Upna Orcid; Beisti Antoñanzas, Irene Upna Orcid; Astrain Ulibarrena, David Upna Orcid; Martínez Echeverri, Álvaro Upna Orcid (Springer, 2020)   Artículo / Artikulua  OpenAccess
      During thermal design in the first phases development, thermoelectric systems, such as thermoelectric generators, the most important parameter affecting the performance is thermal resistance of the components. This paper ...
    • Innovative approaches for organizing an inclusive optics and photonics conference in virtual format 

      Heras, Alba de las; Gómez-Varela, Ana Isabel; Tomás, María-Baralida; Pérez Herrera, Rosa Ana Upna Orcid; Sánchez, Luis Alberto; Gallazzi, Francesca; Santamaría, Beatriz; García Lechuga, Mario; Vinas María; Delgado Pinar, Martina; González Fernández, Verónica (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The COVID pandemic is forcing the renewal of scientific conferences, offering opportunities to introduce technological and inclusive developments. Our analysis focuses on the implementation of inclusive practices for female ...
    • An innovative way of using coherently radiating periodic structures for phased arrays with reduced number of phase shifters 

      Juárez, Elizvan; Panduro, Marco A.; Covarrubias, David H.; Reyna, Alberto; Sánchez, Brian; Río Bocio, Carlos del Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      This article presents an innovative design technique for feeding phase antenna arrays using coherently radiating periodic structure (CORPS) technology for reducing the number of phase shifters (PSs) in limited-scan ...
    • Instantaneous amplitude and phase signal modeling for harmonic removal in wind turbines 

      Zivanovic, Miroslav Upna Orcid; Plaza Puértolas, Aitor Upna Orcid; Iriarte Goñi, Xabier Upna Orcid; Carlosena García, Alfonso Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
      We present a novel approach to harmonic disturbance removal in single-channel wind turbine acceleration data by means of time-variant signal modeling. Harmonics are conceived as a set of quasi-stationary sinusoids whose ...
    • La integración de la inteligencia artificial en la administración pública 

      Sarasíbar Iriarte, Miren Upna Orcid (Wolters Kluwer, 2023)   Artículo / Artikulua
    • Integrating multiple stubs in stepped-impedance filter aiming for high selectivity 

      Sami, Abdul Upna; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María; Arnedo Gil, Israel; Calero Fernández, Ibai; Teberio Berdún, Fernando Upna Orcid; Martín Iglesias, Petronilo; Benito Pertusa, David Upna Orcid; Arregui Padilla, Iván Upna Orcid (IETWiley, 2022)   Artículo / Artikulua  OpenAccess
      A design technique to include multiple and fully-controlled transmission zeros (TZs) in the frequency response of rectangular waveguide commensurate-line stepped-impedance filters is presented in this letter. These bandpass ...
    • Integration of autonomous wireless sensor networks in academic school gardens 

      López Iturri, Peio Upna Orcid; Celaya Echarri, Mikel Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Aguirre Gallego, Erik Upna Orcid; Astrain Escola, José Javier Upna Orcid; Villadangos Alonso, Jesús Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      In this work, the combination of capabilities provided by Wireless Sensor Networks (WSN) with parameter observation in a school garden is employed in order to provide an environment for school garden integration as a ...
    • Intelligent control of wind-assisted PHEVs smart charging station 

      Hassan, Syed Zulqadar; Kamal, Tariq; Riaz, Muhammad Hussnain; Shah, Syed Aamir Hussain; Ali, Hina Gohar; Riaz, Muhammad Tanveer; Sarmad, Muhammad; Zahoor, Amir; Khan, Muhammad Abbas; Pascual Miqueleiz, Julio María Upna Orcid (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      Two technology opportunities, integration of renewable energy sources and the electrification of vehicles are being encouraged to reduce dependency on fossil fuels and pollution problems. Nevertheless, the huge increase ...
    • Interdigital concept in photonic sensors based on an array of lossy mode resonances 

      Domínguez Rodríguez, Ismel Upna Orcid; Del Villar, Ignacio Upna Orcid; Fuentes Lorenzo, Omar Upna; Corres Sanz, Jesús María Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Nature Research, 2021)   Artículo / Artikulua  OpenAccess
      Multi-parameter detection is key in the domain of sensors. Here it is demonstrated that an indium tin oxide (ITO) nanocoating can be used to generate multiple lossy mode resonances (LMRs) in the optical spectrum. To achieve ...
    • An interdisciplinary design of an interactive cultural heritage visit for in-situ, mixed reality and affective experiences 

      Olaz Moratinos, Xabier; García Marreros, Ricardo Manuel; Ortiz Nicolás, Amalia; Marichal Baráibar, Sebastián Roberto; Villadangos Alonso, Jesús Upna Orcid; Ardaiz Villanueva, Óscar Upna Orcid; Marzo Pérez, Asier Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      Interactive technologies, such as mixed-reality and natural interactions with avatars, can enhance cultural heritage and the experience of visiting a museum. In this paper, we present the design rationale of an interactive ...
    • Internalizing negative externalities in vehicle routing problems through green taxes and green tolls 

      Serrano Hernández, Adrián Upna Orcid; Faulín Fajardo, Javier Upna Orcid (Institut d'Estadística de Catalunya (Idescat), 2019)   Artículo / Artikulua  OpenAccess
      Road freight transportation includes various internal and external costs that need to be accounted for in the construction of efficient routing plans. Typically, the resulting optimization problem is formulated as a vehicle ...
    • Interval subsethood measures with respect to uncertainty for the interval-valued fuzzy setting 

      Pekala, Barbara; Bentkowska, Urszula; Sesma Sara, Mikel Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid; Lafuente López, Julio Upna Orcid; Altalhi, A. H.; Knap, Maksymilian; Bustince Sola, Humberto Upna Orcid; Pintor Borobia, Jesús María Upna Orcid (Atlantis Press, 2020)   Artículo / Artikulua  OpenAccess
      In this paper, the problem of measuring the degree of subsethood in the interval-valued fuzzy setting is addressed. Taking into account the widths of the intervals, two types of interval subsethood measures are proposed. ...
    • Interval-valued aggregation functions based on moderate deviations applied to motor-imagery-based brain computer interface 

      Fumanal Idocin, Javier Upna Orcid; Takáč, Zdenko; Fernández Fernández, Francisco Javier Upna Orcid; Sanz Delgado, José Antonio; Goyena Baroja, Harkaitz; Lin, Chin-Teng; Wang, Yu-Kai; Bustince Sola, Humberto Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      In this work we develop moderate deviation functions to measure similarity and dissimilarity among a set of given interval-valued data to construct interval-valued aggregation functions, and we apply these functions in two ...

      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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