• Spacing roughness parameters analysis on the EDM of TiB2 

      Torres Salcedo, Alexia Upna Orcid; Luis Pérez, Carmelo Upna; Puertas Arbizu, Ignacio Upna Orcid (Elsevier, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Titanium diboride (TiB2) is a novel sintered ceramic material which has attracted a great deal of interest because of its excellent mechanical properties, wear resistance and chemical resistance. At present, this ceramic ...
    • Stable L-band fiber laser sensor using a backscattering-based multimode fiber reflector 

      Pérez Herrera, Rosa Ana Upna Orcid; Roldán Varona, Pablo; Sánchez-González, Arturo; Durán Lázaro, María Upna Orcid; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna Orcid (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A new and highly stable L-band fiber laser for sensing is demonstrated. An emission line at 1575.47 nm, was achieved using a special reflector. Good strain sensitivity, optical signal to noise ratio and output power stability ...
    • 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 ...
    • A strategic multistage tactical two-stage stochastic optimization model for the airline fleet management problem 

      Serrano Hernández, Adrián Upna Orcid; Cadarso, Luis; Faulín Fajardo, Javier Upna Orcid (Elsevier, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This work proposes stochastic optimization for the airline fleet management problem, considering uncertainty in the demand, operational costs, and fares. In particular, a multistage tree is proposed, compounded of strategic ...
    • Strengthened ordered directional and other generalizations of monotonicity for aggregation functions 

      Sesma Sara, Mikel Upna Orcid; Miguel Turullols, Laura de Upna Orcid; Lafuente López, Julio Upna Orcid; Barrenechea Tartas, Edurne Upna Orcid; Mesiar, Radko; Bustince Sola, Humberto Upna Orcid (Springer, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A tendency in the theory of aggregation functions is the generalization of the monotonicity condition. In this work, we examine the latest developments in terms of different generalizations. In particular, we discuss ...
    • Structural health monitoring of solar trackers using distributed fiber optic sensors 

      Mariñelarena Ollacarizqueta, Jon Upna Orcid; Mompó Roselló, Juan José Upna; Zurita Gabasa, Jesús Upna; Urricelqui Polvorinos, Javier Upna Orcid; Júdez Colorado, Aitor Upna; López-Amo Sáinz, Manuel Upna Orcid; Jiménez Romero, Sergio; Achaerandio, Álvaro; Loayssa Lara, Alayn Upna Orcid (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate the application of a novel type of distributed fiber optic sensors (DFOSs) to dynamically monitor the effects of wind on solar tracker structures used in photovoltaic power stations. This DFOS is based on ...
    • A study of different families of fusion functions for combining classifiers in the one-vs-one strategy 

      Uriz Martín, Mikel Xabier Upna Orcid; Paternain Dallo, Daniel Upna Orcid; Jurío Munárriz, Aránzazu Upna Orcid; Bustince Sola, Humberto Upna Orcid; Galar Idoate, Mikel Upna Orcid (Springer, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work we study the usage of different families of fusion functions for combining classifiers in a multiple classifier system of One-vs-One (OVO) classifiers. OVO is a decomposition strategy used to deal with multi-class ...
    • Study of the degradation of heat exchanger materials in the acidic environment of Teide National Park 

      Catalán Ros, Leyre Upna Orcid; Pérez Artieda, Miren Gurutze Upna Orcid; Berlanga Labari, Carlos Upna Orcid; Garacochea Sáenz, Amaia; Rodríguez García, Antonio Upna Orcid; Domínguez, Vidal; Montañez, Ana Carolina; Padilla, Germán D.; Pérez, Nemesio M. (2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Supplying power to volcanic monitoring stations constitutes a challenge due to both the access difficulties and the acidic environment associated with volcanoes. ELECTROVOLCAN project is developing thermoelectric generators ...
    • Study of the human eye working principle: an impressive high angular resolution system with simple array detectors 

      Betancourt Quiñones, Diego Upna; Río Bocio, Carlos del Upna Orcid (IEEE, 2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper the working principle of the human eye is studied since uses very simple detectors, cones and rods, to provide an impressive high angular resolution without using any kind of scanning technique. Usually ...
    • Study on antenna mutual coupling suppression using integrated metasurface isolator for SAR and MIMO applications 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna Orcid; Andujar, A.; Anguera, J.; Limiti, Ernesto (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A metasurface based decoupling structure that is composed of a square-wave slot pattern with exaggerated corners that is implemented on a rectangular microstrip provides high-isolation between adjacent patch antennas for ...
    • Sub-millimetre wave imaging array configurations using EBG technology 

      Ederra Urzainqui, Íñigo Upna Orcid; Gonzalo García, Ramón Upna Orcid; Martínez Pascual, Beatriz Upna; Río Bocio, Carlos del Upna Orcid; Azcona, L.; Alderman, B.; Huggard, P.G.; Hon, B.P. de; Beurden, M.C. van; Marchand, L.; Maagt, Peter de (2004)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    • Suberb gaussian beam efficiency corrugated horn antennas 

      Teniente Vallinas, Jorge Upna Orcid; Gonzalo García, Ramón Upna Orcid; Río Bocio, Carlos del Upna Orcid (2010)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper we are presenting the possibilities of corrugated horn antennas that combine horizontal and vertical corrugations.
    • 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 ...
    • Subvertir el género: mujeres sin maternidad 

      Bogino Larrambebere, Mercedes Upna Orcid; Cis, Valeria (2013)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      En este póster se propone el término ‘mujeres sin maternidad’ haciendo referencia a aquellas mujeres que en su trayectoria vital generan una ruptura o subversión de género. En otras palabras, ante la persistencia del ideal ...
    • Super-gain-boosted miller op-amp based on nested regulated cascode techniques with FoMAOLDC =24,614kV/V.MHz.pF/µWatt 

      Paul, Anindita; Ramírez-Angulo, Jaime; López Martín, Antonio Upna Orcid; González Carvajal, Ramón; Díaz Sánchez, Alejandro (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A simple technique to greatly enhance the DC open-loop gain of a Miller op-amp is introduced here. It is based on the utilization of nested regulated cascode amplifiers. It uses conventional Miller compensation and does ...
    • Super-resolution for Sentinel-2 images 

      Galar Idoate, Mikel Upna Orcid; Sesma Redín, Rubén Upna; Ayala Lauroba, Christian; Aranda, Carlos (International Society for Photogrammetry and Remote Sensing, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Obtaining Sentinel-2 imagery of higher spatial resolution than the native bands while ensuring that output imagery preserves the original radiometry has become a key issue since the deployment of Sentinel-2 satellites. ...
    • Supervised descent method (SDM) applied to accurate pupil detection in off-the-shelf eye tracking systems 

      Larumbe Bergera, Andoni Upna Orcid; Cabeza Laguna, Rafael Upna Orcid; Villanueva Larre, Arantxa Upna Orcid (ACM, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The precise detection of pupil/iris center is key to estimate gaze accurately. This fact becomes specially challenging in low cost frameworks in which the algorithms employed for high performance systems fail. In the last ...
    • Suppressing open stopband for terahertz periodic microstrip leaky-wave antennas 

      Haddad, Thomas; Biurrun Quel, Carlos Upna Orcid; Lu, Peng; Kaya, Hacer; Mohammad, Israa; Stöhr, Andreas (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper reports on a periodic microstrip Leaky-wave antenna (LWA). The open stopband issue is suppressed by altering the unit cell using a matching stub. The developed LWA is based on a grounded InP-substrate of 50 ...
    • Synthesis of virtual Brillouin frequency shift profiles in BOTDA sensors using optical source dithering 

      Urricelqui Polvorinos, Javier Upna Orcid; Sagüés García, Mikel Upna Orcid; Loayssa Lara, Alayn Upna Orcid (SPIE, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We demonstrate a novel concept for Brillouin optical time domain analysis sensors that is based on synthesizing a virtual Brillouin frequency shift profile along the sensing fiber. The technique is based on modulating the ...
    • Synthetic wind speed generation for the simulation of realistic diurnal cycles 

      D’Ambrosio, D.; Schoukens, Johan; Troyer, T. De; Zivanovic, Miroslav Upna Orcid; Runacres, Mark (IOP Publishing, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Synthetic wind-speed generators can provide a detailed characterisation of the wind variability at different time scales. A keen interest in the availability of synthetic wind speeds has recently risen in wind power modelling ...

      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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