Recent Submissions

  • Do we still need fuzzy classifiers for Small Data in the Era of Big Data? 

    Elkano Ilintxeta, Mikel Upna; Bustince Sola, Humberto Upna; Galar Idoate, Mikel Upna (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena
    The Era of Big Data has forced researchers to explore new distributed solutions for building fuzzy classifiers, which often introduce approximation errors or make strong assumptions to reduce computational and memory ...
  • CFM-BD: a distributed rule induction algorithm for building compact fuzzy models in Big Data classification problems 

    Elkano Ilintxeta, Mikel Upna; Sanz Delgado, José Antonio Upna; Barrenechea Tartas, Edurne Upna; Bustince Sola, Humberto Upna; Galar Idoate, Mikel Upna (IEEE, 2020)   Artículo / Artikulua  OpenAccess
    Interpretability has always been a major concern for fuzzy rule-based classifiers. The usage of human-readable models allows them to explain the reasoning behind their predictions and decisions. However, when it comes to ...
  • Hg2+ optical fiber sensor based on LSPR generated by gold nanoparticles embedded in LBL nano-assembled coatings 

    Martínez Hernández, María Elena; Goicoechea Fernández, Javier Upna; Arregui San Martín, Francisco Javier Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
    Mercury is an important contaminant since it is accumulated in the body of living beings, and very small concentrations are very dangerous in the long term. This paper reports the fabrication of a highly sensitive fiber ...
  • Super-resolution for Sentinel-2 images 

    Galar Idoate, Mikel Upna; Sesma Redín, Rubén; Ayala, C.; Aranda, C. (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. ...
  • A radio channel model for D2D communications blocked by single trees in forest environments 

    Picallo Guembe, Imanol; Klaina, Hicham; López Iturri, Peio Upna; Aguirre Gallego, Erik Upna; Celaya Echarri, Mikel; Azpilicueta Fernández de las Heras, Leyre Upna; Eguizábal Garrido, Alejandro; Falcone Lanas, Francisco Javier Upna; Alejos, Ana (MDPI, 2019)   Artículo / Artikulua  OpenAccess
    In this paper we consider the D2D (Device-to-Device) communication taking place between Wireless Sensor Networks (WSN) elements operating in vegetation environments in order to achieve the radio channel characterization ...
  • MIMO based decoupling strategy for grid connected power converters controlled in the synchronous reference frame 

    Samanes Pascual, Javier Upna; Gubía Villabona, Eugenio Upna; López Taberna, Jesús (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Power converters are frequently connected to the grid through a LCL filter, controlling its power transfer through a current control loop in the synchronous reference frame. In this reference frame, cross coupling terms ...
  • Common-mode and phase-to-ground voltage reduction in back-to-back power converters with discontinuous PWM 

    Samanes Pascual, Javier Upna; Gubía Villabona, Eugenio Upna; Juankorena Saldias, Xabier Upna; Gironés Remírez, Carlos (IEEE, 2020)   Artículo / Artikulua
    Discontinuous space vector pulsewidth modulation (DSVPWM) techniques are an interesting option for three-phase, two-level power converters when efficiency is a key factor. Such is the case of back-to-back (B2B) power ...
  • Multisampled-capacitor-voltage active damping for parallel interleaved grid connected voltage source converters with LCL filter 

    Samanes Pascual, Javier Upna; Gubía Villabona, Eugenio Upna (IEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Parallel interleaved converters for high power renewable energy systems present stability issues at the LCL resonance frequency. A multisampled measurement and filtering strategy is proposed to stabilize the system based ...
  • On the limits of the capacitor-voltage active damping for grid-connected power converters with LCL filter 

    Samanes Pascual, Javier Upna; Gubía Villabona, Eugenio Upna (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Active damping strategies are widely extended to avoid stability issues at the LCL filter resonant poles in grid-connected voltage source converters. The capacitor voltage derivative active damping effectively damps the ...
  • Control design and stability analysis of power converters: the MIMO generalized bode criterion 

    Samanes Pascual, Javier Upna; Urtasun Erburu, Andoni Upna; Barrios Rípodas, Ernesto Upna; Lumbreras Magallón, David Upna; López Taberna, Jesús; Gubía Villabona, Eugenio Upna; Sanchís Gúrpide, Pablo Upna (IEEE, 2020)   Artículo / Artikulua
    Three-phase dynamic systems and multiphase generators are frequently modeled and controlled in the synchronous reference frame. To properly model the cross-coupling terms in this reference frame, complex vector theory and ...
  • Sensorless active damping strategy for parallel interleaved voltage source power converters with LCL filter 

    Samanes Pascual, Javier Upna; Gubía Villabona, Eugenio Upna (IEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Grid-connected pulse-width modulation converters with LCL filters are widely extended as an interface for renewable energy generating systems. Those filters arise stability issues due to the filter resonance, which, must ...
  • Use of Choquet integrals in multivalued contexts 

    Burusco Juandeaburre, Ana Upna; Alcalde, Cristina (Springer, 2020)   Artículo / Artikulua
    In this work, multivalued contexts are studied, in which the different observations are related to each other. Continuing the studies already carried out in previous works, the use of Choquet integrals can be an adequate ...
  • Effects of the body wearable sensor position on the UWB localization accuracy 

    Otim, Timothy; Díez, Luis E.; Bahillo, Alfonso; López Iturri, Peio Upna; Falcone Lanas, Francisco Javier Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
    Over the years, several Ultrawideband (UWB) localization systems have been proposed and evaluated for accurate estimation of the position for pedestrians. However, most of them are evaluated for a particular wearable sensor ...
  • Bitcoin and cybersecurity: temporal dissection of blockchain data to unveil changes in entity behavioral patterns 

    Zola, Francesco; Bruse, Jan Lukas; Eguimendia, María; Galar Idoate, Mikel Upna; Orduna Urrutia, Raúl (MDPI, 2019)   Artículo / Artikulua  OpenAccess
    The Bitcoin network not only is vulnerable to cyber-attacks but currently represents the most frequently used cryptocurrency for concealing illicit activities. Typically, Bitcoin activity is monitored by decreasing anonymity ...
  • Generation of lossy mode resonances with different nanocoatings deposited on coverslips 

    Fuentes Lorenzo, Omar; Goicoechea Fernández, Javier Upna; Corres Sanz, Jesús María Upna; Del Villar, Ignacio Upna; Ozcariz Celaya, Aritz Upna; Matías Maestro, Ignacio Upna (Optical Society of America, 2020)   Artículo / Artikulua  OpenAccess
    The generation of lossy mode resonances (LMRs) with a setup based on lateral incidence of light in coverslips is a simple platform that can be used for sensing. Here the versatility of this platform is proved by studying ...
  • A survey on detection techniques for cryptographic ransomware 

    Berrueta Irigoyen, Eduardo Upna; Morató Osés, Daniel Upna; Magaña Lizarrondo, Eduardo Upna; Izal Azcárate, Mikel Upna (IEEE, 2019)   Artículo / Artikulua  OpenAccess
    Crypto-ransomware is a type of malware that encrypts user files, deletes the original data, and asks for a ransom to recover the hijacked documents. It is a cyber threat that targets both companies and residential users, ...
  • Weak and directional monotonicity of functions on Riesz spaces to fuse uncertain data 

    Sesma Sara, Mikel Upna; Mesiar, Radko; Bustince Sola, Humberto Upna (Elsevier B.V., 2019)   Artículo / Artikulua
    In the theory of aggregation, there is a trend towards the relaxation of the axiom of monotonicity and also towards the extension of the definition to other domains besides real numbers. In this work, we join both approaches ...
  • Accumulating priority queues versus pure priority queues for managing patients in emergency departments 

    Cildoz Esquíroz, Marta Upna; Ibarra, Amaia; Mallor Giménez, Fermín Upna (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
    Improving the quality of healthcare in emergency departments (EDs) is at the forefront of many hospital managers’ efforts, as they strive to plan and implement better patient flow strategies. In this paper, a new approach ...
  • On the influence of admissible orders in IVOVO 

    Uriz Martín, Mikel Xabier; Paternain Dallo, Daniel Upna; Bustince Sola, Humberto Upna; Galar Idoate, Mikel Upna (Springer, 2019)   Contribución a congreso / Biltzarrerako ekarpena
    It is known that when dealing with interval-valued data, there exist problems associated with the non-existence of a total order. In this work we investigate a reformulation of an interval-valued decomposition strategy for ...
  • Image feature extraction using OD-monotone functions 

    Marco Detchart, Cedric Upna; López Molina, Carlos Upna; Fernández Fernández, Francisco Javier Upna; Pagola Barrio, Miguel Upna; Bustince Sola, Humberto Upna (Springer, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Edge detection is a basic technique used as a preliminary step for, e.g., object extraction and recognition in image processing. Many of the methods for edge detection can be fit in the breakdown structure by Bezdek, ...

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