Recent Submissions

  • 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 ...
  • Optimal strain gauge configurations for the estimation of mechanical loads in the main shaft of HAWT 

    Iriarte Goñi, Xabier; Aginaga García, Jokin; Lerga Valencia, Francisco Javier; Gainza González, Gorka; Ros Ganuza, Javier; Bacaicoa Díaz, Julen (IOP Publishing, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In Structural Health Monitoring of wind turbines, measuring the mechanical loads is a key issue. The customary techniques for this task use a full-bridge strain gauge configuration to measure each of the six load components ...
  • Dual-mode soft-transition control for single-phase grid-connected photovoltaic inverters 

    Elizondo Martínez, David; Urtasun Erburu, Andoni Upna Orcid (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Single-phase grid-connected inverters for photovoltaic power generation have been strongly analysed for improvement. Dual-mode control for two-stage inverters makes it possible to improve the efficiency by alternating ...
  • Inter-comparison of atmospheric correction methods on Sentinel-2 images applied to croplands 

    Sola Torralba, Ion Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; González-Audicana, María Upna Orcid (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Atmospheric correction of high resolution satellite scenery is a necessary preprocessing step for applications where bottom of atmosphere (BOA) reflectances are needed. The selection of the best atmospheric correction ...
  • On the influence of spatial resolution in soil surface roughness characterization using Tls and Sfm techniques 

    Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Giménez Díaz, Rafael Upna; Milenković, Milutin; Pfeifer, Norbert (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Soil surface roughness strongly affects the scattering of microwaves and determines the backscattering coefficient observed by SAR (Synthetic Aperture Radar) sensors. The aim of this study is to analyze the influence of ...
  • Crop type mapping based on Sentinel-1 backscatter time series 

    Arias Cuenca, María Upna Orcid; Campo-Bescós, Miguel Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The high revisit time of Sentinel-1 (S1) observations enables the design of crop type mapping approaches exploiting the backscatter time series observed for the different crops. The objective of this study is to propose a ...
  • Enhancing the efficiency of the interval-valued fuzzy rule-based classifier with tuning and rule selection 

    Sanz Delgado, José Antonio Upna Orcid; Asmus, Tiago Upna; Osa Hernández, Borja de la Upna; Bustince Sola, Humberto Upna Orcid (Springer, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Interval-Valued fuzzy rule-based classifier with TUning and Rule Selection, IVTURS, is a state-of-the-art fuzzy classifier. One of the key point of this method is the usage of interval-valued restricted equivalence functions ...
  • Redes de brainstorming y formación de equipos innovadores apoyado por herramientas Web 2.0 

    Ardaiz Villanueva, Óscar Upna Orcid; Nicuesa, Xabier; Brene Artázcoz, Óscar; Sanz de Acedo Lizarraga, María Luisa Upna; Sanz de Acedo Baquedano, María Teresa Upna (Asociación Interacción Persona-Ordenador, 2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Esta investigación tiene como finalidad ofrecer una nueva forma de realización de la técnica brainstorming apoyada en herramientas informáticas Web2.0 para mejorar los procesos innovadores. Estas herramientas permiten la ...
  • A gap waveguide fed circular polarization antennas in the millimeter wave range 

    Pérez, Dayan Upna Orcid; Torres García, Alicia E. Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, a novel circular polarization (CP) antennas in ridge gap waveguide (RGW) working in the V-band of the millimeter-wave spectrum is presented. CP is generated in a simple and effective way by means of two ...
  • Worst expected ramp rates from cloud speed measurements 

    Wang, Guang Chao; Bosch, Juan Luis; Kurtz, Ben; Parra Laita, Íñigo de la Upna Orcid; Wu, Elynn (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Large PV power ramp rates are of concern and sometimes even explicitly restricted by grid operators. Battery energy storage systems can smooth the power output and maintain ramp rates within permissible limits. To enable ...
  • Optical fiber vacuum sensor based on modal interferometer and PDMS coating 

    Ascorbe Muruzabal, Joaquín Upna Orcid; Fuentes Lorenzo, Omar Upna; Corres Sanz, Jesús María Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This work studies the behavior of polydimethylsiloxane (PDMS) as a transducer for optical vacuum pressure measurements. The optical structure chosen for this device is a modal interferometer achieved by splicing a coreless ...
  • La economía circular en el derecho ambiental 

    Alenza García, José Francisco Upna Orcid (Centro Internacional de Estudios de Derecho Ambiental (CIEDA), 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    El trabajo parte de la consagración de la idea de 'economía circular' en el Plan de Acción de la UE de 2015 para mostrar su rápida y amplia incorporación a la normativa ambiental, especialmente, en materia de residuos. En ...
  • On the modeling of the concept: “The Contents of the Empty Set" using the activity orderings family (⊑w)w∈L in a distributive lattice ( L, ≤ ). An interpretation of those order relations ⊑w as alternative inclusions (“w-Inclusions") and of its associated inf- operators ⨅w as additional intersections (“w-Intersections”), both in the Intuitive set theory and in the L-fuzzy set theory. (In Spanish) 

    Fuentes González, Ramón Upna Orcid (2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A mathematical model is presented to define new inclusions, intersections and unions as alternatives to the usual ones between crisp and fuzzy subsets. In particular, the concept of “the non-trivial content of the empty ...
  • Labyrinth absorber based on metageometries metasurface for fungi detection 

    Jáuregui López, Irati Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper a labyrinth metasurface based in the new paradigm of metageometries is designed to operate in the Terahertz (THz) band as a biosensor. First, a numerical study is carried out to study the performance of the ...
  • New hexagonal CORPS-BFN for multibeam antenna applications 

    Biurrun Quel, Carlos Upna Orcid; Montesano, Antonio; Ederra Urzainqui, Íñigo Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid; Río Bocio, Carlos del Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This work presents a new topology of a Coherently Radiating Periodic Structure - Beam Forming Network (CORPS-BFN) and its application for multibeam systems. A unit cell, consisting of a transition from a coaxial input to ...
  • Comparison of modified soret lenses for dual band integrated detectors 

    Torres García, Alicia E. Upna Orcid; Pérez Escudero, José Manuel Upna Orcid; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper presents the comparison of different modified Soret lenses suitable for a millimeter and submillimeterwave dualband integrated pixel detectors. The approach is based on the modification of a printed planar Soret ...
  • An empirical study on supervised and unsupervised fuzzy measure construction methods in highly imbalanced classification 

    Uriz Martín, Mikel Xabier Upna; Paternain Dallo, Daniel Upna Orcid; Bustince Sola, Humberto Upna Orcid; Galar Idoate, Mikel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
    The design of an ensemble of classifiers involves the definition of an aggregation mechanism that produces a single response obtained from the information provided by the classifiers. A specific aggregation methodology ...
  • Evaluation of two procedures for selecting the CIE standard sky type using high dynamic range images 

    García Ruiz, Ignacio Upna Orcid; Blas Corral, María Ángeles de Upna Orcid; Torres Escribano, José Luis Upna Orcid; Hernández Salueña, Begoña Upna Orcid; Sáenz Gamasa, Carlos Upna Orcid; Ormazábal Pagola, Mikel Upna (International Solar Energy Society, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The characterization of sky conditions according to the CIE Standard General Sky classification requires knowledge of diffuse luminance angular distribution in the sky vault. This variable is usually measured by sky scanners. ...
  • Additional feature layers from ordered aggregations for deep neural networks 

    Domínguez Catena, Iris Upna Orcid; Paternain Dallo, Daniel Upna Orcid; Galar Idoate, Mikel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
    In the last years we have seen huge advancements in the area of Machine Learning, specially with the use of Deep Neural Networks. One of the most relevant examples is in image classification, where convolutional neural ...
  • Development of energy management strategies for the sizing of a fast charging station for electric buses 

    Ojer Palacios, Iñaki Upna; Berrueta Irigoyen, Alberto Upna Orcid; Pascual Miqueleiz, Julio María Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
    The electric vehicle contributes to reduce greenhouse gases emissions and get a greater integration of renewable energy. In this context, the implementation of urban buses implies the development of new grid infrastructures ...

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