Recent Submissions

  • A decision tree based approach with sampling techniques to predict the survival status of poly-trauma patients 

    Sanz Delgado, José Antonio Upna; Fernández Fernández, Francisco Javier Upna; Bustince Sola, Humberto Upna; Gradin Purroy, Carlos; Belzunegui Otano, Tomás Upna (Atlantis Press, 2017)   Artículo / Artikulua  OpenAccess
    Survival prediction of poly-trauma patients measure the quality of emergency services by comparing their predictions with the real outcomes. The aim of this paper is to tackle this problem applying C4.5 since it achieves ...
  • Construction of capacities from overlap indexes 

    Sanz Delgado, José Antonio Upna; Galar Idoate, Mikel Upna; Mesiar, Radko; Bustince Sola, Humberto Upna; Fernández Fernández, Francisco Javier Upna (Springer, 2017)   Capítulos de libro / Liburuen kapituluak  OpenAccess
    In this chapter, we show how the concepts of overlap function and overlap index can be used to define fuzzy measures which depend on the specific data of each considered problem.
  • Quasi-distributed vibration sensing based on weak reflectors and STFT demodulation 

    Leandro González, Daniel Upna; Zhu, Mengshi; López-Amo Sáinz, Manuel Upna; Muruyama, Hideaki (IEEE, 2020)   Artículo / Artikulua
    In this work, a new system is proposed for quasi-distributed vibration sensing based on the Doppler effect. The setup employs an optical frequency domain reflectometer (OFDR) and an array of weak reflectors. The short-time ...
  • Simultaneous measurement of humidity and temperature based on a partially coated optical fiber long period grating 

    Urrutia Azcona, Aitor Upna; Goicoechea Fernández, Javier Upna; Ricchiuti, Amelia L.; Barrera, D.; Arregui San Martín, Francisco Javier Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
    A humidity and temperature optical fiber sensor based on a long-period grating (LPG), which can provide simultaneous response to both magnitudes, is proposed and demonstrated via experiments. Previously, the LPG was fully ...
  • Comprehensive analysis of photonic nanojets in 3D dielectric cuboids excited by surface plasmons 

    Pacheco Peña, Víctor Upna; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
    In this paper we study the excitation of photonic nanojets (PNJ) in 3D dielectric cuboids by surface plasmons at telecommunication wavelengths. The analysis is done using the effective refractive index approach. It is shown ...
  • Tripod-loop metasurfaces for terahertz-sensing applications: a comparison 

    Jáuregui-López, Irati Upna; Orazbayev, Bakhtiyar Upna; Pacheco-Peña, Víctor Upna; Beruete Díaz, Miguel Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
    The high electric field intensity achieved on the surface of sensors based on metasurfaces (metasensors) makes them an excellent alternative for sensing applications where the volume of the sample to be identified is tiny ...
  • Methodology to assess the impact of the introduction of new technologies in smart cities 

    Branchi, Pablo Emilio Upna; Fernández Valdivielso, Carlos Upna; Matías Maestro, Ignacio Upna (Federación de Asociaciones de Ingenieros Industriales de España, 2015)   Artículo / Artikulua
    Estamos frente a una revolución producto de los sistemas digitales y de comunicación, donde el papel de la tecnología continuará creciendo exponencialmente. Está calando profundamente en la sociedad, y tiene un alto impacto ...
  • Compact groove diamond antenna in gap waveguide technology with broadband circular polarization at millimeter waves 

    Pérez, Dayan; Torres-García, Alicia Upna; Ederra Urzainqui, Íñigo Upna; Beruete Díaz, Miguel Upna (IEEE, 2020)   Artículo / Artikulua
    In this paper, three compact antennas using the Ridge Gap Waveguide (RGW) technology working in the millimeter-wave band (60 GHz), with a high-purity and broadband circular polarization (CP) are numerically and experimentally ...
  • Design and empirical validation of a Bluetooth 5 fog computing based industrial CPS architecture for intelligent industry 4.0 shipyard workshops 

    Fraga Lamas, Paula; López Iturri, Peio Upna; Celaya Echarri, Mikel; Blanco Novoa, Óscar; Azpilicueta Fernández de las Heras, Leyre Upna; Varela Barbeito, José; Falcone Lanas, Francisco Javier Upna; Fernández Caramés, Tiago M. (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    Navantia, one of largest European shipbuilders, is creating a fog computing based Industrial Cyber-Physical System (ICPS) for monitoring in real-time its pipe workshops in order to track pipes and keep their traceability. ...
  • A biased-randomized learnheuristic for solving the team orienteering problem with dynamic rewards 

    Reyes-Rubiano, Lorena Silvana; Juan, Ángel Alejandro; Bayliss, C.; Panadero, J.; Faulín Fajardo, Javier Upna; Copado, P. (Elsevier, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper we discuss the team orienteering problem (TOP) with dynamic inputs. In the static version of the TOP, a fixed reward is obtained after visiting each node. Hence, given a limited fleet of vehicles and a threshold ...
  • Low-voltage 0.81mW, 1-32 CMOS VGA with 5% bandwidth variations and -38dB DC rejection 

    López Martín, Antonio Upna; Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; Rocha-Pérez, José Miguel; González Carvajal, Ramón (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    A CMOS low-voltage amplifier with approximately constant bandwidth and DC rejection is introduced. The design is based on the cascade of a wide linear input range OTA, an op-amp and a servo-loop with extremely large time ...
  • A 1.2-V current-mode RMS-to-DC converter based on a novel two-quadrant electronically simulated MOS translinear loop 

    Martincorena Arraiza, Maite; Cruz Blas, Carlos Aristóteles de la Upna; Algueta-Miguel, Jose M. Upna; López Martín, Antonio Upna (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    A novel current-mode CMOS RMS-to-DC converter using translinear techniques is introduced. It is based on a squarer/divider cell that is implemented using an electronically simulated loop with a novel biasing scheme that ...
  • Development of an aptamer based luminescent optical fiber sensor for the continuous monitoring of Hg2+ in aqueous media 

    Acha Morrás, Nerea de Upna; Elosúa Aguado, César Upna; Arregui San Martín, Francisco Javier Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
    A fluorescent optical fiber sensor for the detection of mercury (Hg2+) ions in aqueous solutions is presented in this work. The sensor was based on a fluorophore-labeled thymine (T)-rich oligodeoxyribonucleotide (ON) ...
  • A combination of a vibrational electromagnetic energy harvester and a giant magnetoimpedance (GMI) sensor 

    Beato López, Juan Jesús Upna; Royo, Isaac Upna; Algueta-Miguel, Jose M. Upna; Gómez Polo, Cristina (MDPI, 2020)   Artículo / Artikulua  OpenAccess
    An energy harvesting device combined with a giant magnetoimpedance (GMI) sensor is presented to analyze low frequency vibrating systems. An electromagnetic harvester based on magnetic levitation is proposed for the electric ...
  • Optimizing energy consumption in transportation: literature review, insights, and research opportunities 

    Corlu, Canan Gunes; Torre, Rocío de la Upna; Serrano Hernández, Adrián Upna; Juan, Ángel Alejandro; Faulín Fajardo, Javier Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
    From airplanes to electric vehicles and trains, modern transportation systems require large quantities of energy. These vast amounts of energy have to be produced somewhere—ideally by using sustainable sources—and then ...
  • Experimental evaluation of distortion in amplitude modulation techniques for parametric loudspeakers 

    San Martín Murugarren, Ricardo Upna; Tello, Pablo; Valencia Leoz, Ana Upna; Marzo Pérez, Asier Upna (MDPI, 2020)   Artículo / Artikulua  OpenAccess
    Parametric loudspeakers can generate a highly directional beam of sound, having applications in targeted audio delivery. Audible sound modulated into an ultrasonic carrier will get self-demodulated along the highly directive ...
  • Interval subsethood measures with respect to uncertainty for the interval-valued fuzzy setting 

    Pekala, Barbara; Bentkowska, Urszula; Sesma Sara, Mikel Upna; Fernández Fernández, Francisco Javier Upna; Lafuente López, Julio Upna; Altalhi, A. H.; Knap, Maksymilian; Bustince Sola, Humberto Upna; Pintor Borobia, Jesús María Upna (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. ...
  • Open repository for the evaluation of ransomware detection tools 

    Berrueta Irigoyen, Eduardo Upna; Morató Osés, Daniel Upna; Magaña Lizarrondo, Eduardo Upna; Izal Azcárate, Mikel Upna (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    Crypto-ransomware is a type of malware that encrypts user files, deletes the original data, and asks for ransom to recover the hijacked documents. Several articles have presented detection techniques for this type of ...
  • Enhanced wireless channel estimation through parametric optimization of hybrid ray launching-collaborative filtering technique 

    Casino, Fran; López Iturri, Peio Upna; Aguirre Gallego, Erik Upna; Azpilicueta Fernández de las Heras, Leyre Upna; Falcone Lanas, Francisco Javier Upna; Solanas, Agusti (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    In this paper, an enhancement of a hybrid simulation technique based on combining collaborative filtering with deterministic 3D ray launching algorithm is proposed. Our approach implements a new methodology of data depuration ...
  • Unsupervised fuzzy measure learning for classifier ensembles from coalitions performance 

    Uriz Martín, Mikel Xabier Upna; Paternain Dallo, Daniel Upna; Domínguez Catena, Iris; Bustince Sola, Humberto Upna; Galar Idoate, Mikel Upna (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    In Machine Learning an ensemble refers to the combination of several classifiers with the objective of improving the performance of every one of its counterparts. To design an ensemble two main aspects must be considered: ...

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