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    • Micro and nanostructured materials for the development of optical fibre sensors 

      Elosúa Aguado, César Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Del Villar, Ignacio Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Bariáin Aisa, Cándido Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Hernáez Sáenz de Zaitigui, Miguel Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Socorro Leránoz, Abián Bentor Upna Orcid; Urrutia Azcona, Aitor Upna Orcid; Sánchez Zábal, Pedro Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; López Torres, Diego Upna Orcid; Acha Morrás, Nerea de Upna Orcid; Ascorbe Muruzabal, Joaquín Upna Orcid; Ozcariz Celaya, Aritz Upna Orcid; Matías Maestro, Ignacio Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      The measurement of chemical and biomedical parameters can take advantage of the features exclusively offered by optical fibre: passive nature, electromagnetic immunity and chemical stability are some of the most relevant ...

    • Microfluidic platform using focused ultrasound passing through hydrophobic meshes with jump availability 

      Koroyasu, Yusuke; Nguyen, Thanh-Vinh; Sasaguri, Shun; Marzo Pérez, Asier Upna Orcid; Ezcurdia Aguirre, Íñigo Fermín Upna Orcid; Nagata, Yuuya; Yamamoto, Tatsuya; Nomura, Nobuhiko; Hoshi, Takayuki; Ochiai, Yoichi; Fushimi, Tatsuki (Oxford University Press, 2023)   Artículo / Artikulua  OpenAccess
      Applications in chemistry, biology, medicine, and engineering require the large-scale manipulation of a wide range of chemicals, samples, and specimens. To achieve maximum efficiency, parallel control of microlitre droplets ...

    • Micropower class AB low-pass analog filter based on the super-source follower 

      Martincorena Arraiza, Maite Upna Orcid; Cruz Blas, Carlos Aristóteles de la Upna Orcid; López Martín, Antonio Upna Orcid; Carlosena García, Alfonso Upna Orcid (IEEE, 2022)   Artículo / Artikulua  OpenAccess
      An improved class AB version of the super source follower is used to implement a compact and power-efficient second order analog low-pass filter. The proposed circuit achieves a 41% power reduction as well as an improvement ...

    • Mid-infrared spectroscopy (MIR) for simultaneous determination of fat and protein content in meat of several animal species 

      Lozano Saiz, María; Rodríguez Ulibarri, Pablo Upna Orcid; Echeverría Morrás, Jesús Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Sorolla Ayza, Mario Upna; Beriain Apesteguía, María José Upna Orcid (Springer, 2017)   Artículo / Artikulua  OpenAccess
      The aim of this research was to study the application of MIR spectroscopy as an alternative to conventional methods to determine fat and protein content. Samples of the main species used to produce meat products were ...

    • A millimeter-wave 4th-harmonic Schottky diode mixer with integrated local oscillator 

      Pérez Escudero, José Manuel Upna Orcid; Quemada Mayoral, Carlos Upna Orcid; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      In this paper the design and experimental validation of a fourth-harmonic mixer based on Schottky diodes working around 300 GHz is presented. The main novelty of this work consists in the integration of an MMIC-based local ...

    • Miniaturization trends in substrate integrated waveguide (SIW) filters: a review 

      Iqbal, Amjad; Tiang, Jun Jiat; Wong, Sew Kin; Alibakhshikenari, Mohammad; Falcone Lanas, Francisco Javier Upna Orcid; Limiti, Ernesto (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      This review provides an overview of the technological advancements and miniaturization trends in Substrate Integrated Waveguide (SIW) filters. SIW is an emerging planar waveguide structure for the transmission of electromagnetic ...

    • Mixture functions and their monotonicity 

      Špirková, Jana; Beliakov, Gleb Upna; Bustince Sola, Humberto Upna Orcid; Fernández Fernández, Francisco Javier Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      We consider mixture functions, which are a type of weighted averages for which the corresponding weights are calculated by means of appropriate continuous functions of their inputs. In general, these mixture function need ...

    • MmWave channel stationarity analysis of V2X communications in an urban environment 

      Rodríguez Corbo, Fidel Alejandro; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Celaya Echarri, Mikel Upna Orcid; Shubair, Raed M.; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      Vehicular communication channels are subject to high nonstationarity mainly characterized by the scatterers’ and/or transceivers’ high mobility. In this sense, this letter presents a characterization of the channel ...

    • Mode transitions and thickness measurements during deposition of nanoscale TiO2 coatings on tilted fiber Bragg gratings 

      Imas González, José Javier Upna Orcid; Albert, Jacques; Del Villar, Ignacio Upna Orcid; Ozcariz Celaya, Aritz Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2022)   Artículo / Artikulua  OpenAccess
      The mode transition is a phenomenon observed in thin film coated long period fiber gratings (LPGs) and singlemode multimode single-mode (SMS) fibers for certain values of the coating thickness and refractive index, ...

    • Modelado multiplataforma para el control de un sistema articulado 

      Ibarrola Chamizo, Javier; Merino Olagüe, Mikel; Iriarte Goñi, Xabier Upna Orcid; Hualde Otamendi, Mikel (UNED, 2023)   Artículo / Artikulua  OpenAccess
      En el presente artículo se ha trabajado con las herramientas de simulación de sistemas mecánicos Gazebo y Simulink, realizando una interconexión entre ambos con el fin de desglosar la parte dinámica y cinemática de la parte ...

    • Un modelo para predecir cuántas camas UCI harán falta durante cada oleada 

      Mallor Giménez, Fermín Upna Orcid; García de Vicuña Bilbao, Daniel Upna Orcid (Asociacion the Conversation España, 2021)   Artículo / Artikulua  OpenAccess
      La crisis financiera mundial de 2008 puso de moda en España el término económico “prima de riesgo”, hasta entonces desconocido. Del mismo modo, la pandemia ha popularizado expresiones y términos como “doblar la curva”, ...

    • Moderate deviation and restricted equivalence functions for measuring similarity between data 

      Altalhi, A. H.; Forcén Carvalho, Juan Ignacio; Pagola Barrio, Miguel Upna Orcid; Barrenechea Tartas, Edurne Upna Orcid; Bustince Sola, Humberto Upna Orcid; Takáč, Zdenko (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      In this work we study the relation between moderate deviation functions, restricted dissimilarity functions and restricted equivalence functions. We use moderate deviation functions in order to measure the similarity or ...

    • Modified Soret lenses for dual band integrated detectors at submillimetre and millimetre wavelengths 

      Torres García, Alicia E. Upna Orcid; Pérez Escudero, José Manuel Upna Orcid; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      This paper presents a planar silicon integrated subharmonic mixer on top of a photonic-crystal platform. The local oscillator (LO) power is injected through a 2D photonic crystal (PC) slab to a resonant cavity that effectively ...

    • Moisture content estimation models of flour matrices in the 67-110 GHz frequency range using a nondestructive and contactless monitoring system 

      Quemada Mayoral, Carlos Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Gonzalo García, Ramón Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      This work addresses the lack of moisture content estimation models for food products in the millimeter-wave frequency range and showcases the potential of this range for designing compact, cost-effective, and in-line food ...

    • Monitoring of water freeze-thaw cycle by means of an etched single-mode - multimode - single-mode fiber-optic refractometer 

      Socorro Leránoz, Abián Bentor Upna Orcid; Aginaga Etxamendi, Concepción Isabel Upna; Díaz Lucas, Silvia Upna Orcid; Urrutia Azcona, Aitor Upna Orcid; Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
      As an alternative to the different technologies that permit the detection of in-situ ice formation on different surfaces, this contribution proposes the design of an etched single-mode – multimode – single-mode (E-SMS) ...

    • Monitoring structural transformations in metamagnetic shape memory alloys by non-contact GMI technology 

      Beato López, Juan Jesús Upna Orcid; La Roca, Paulo Matías Upna; Algueta-Miguel, Jose M. Upna Orcid; Garayo Urabayen, Eneko Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid; Recarte Callado, Vicente Upna Orcid; Gómez Polo, Cristina Upna Orcid; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (IOP Publishing, 2023)   Artículo / Artikulua
      Different applications based on metamagnetic shape memory alloy (MSMA) require monitoring the evolution of the martensitic transformation (MT) to optimize the actuation mechanism. To avoid interaction with the active ...

    • Monthly intercepted photosynthetically active radiation estimation based on the Beer-Lambert's law across the cereal crops of Castilla y León (Spain) 

      Garrachón-Gómez, Elena; García Ruiz, Ignacio Upna Orcid; García-Rodríguez, Ana; García-Rodríguez, Sol; Alonso-Tristán, Cristina (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
      Agriculture is by far the most important economic activity in the Spanish autonomous region of Castilla y León. Numerous factors influence crop development but one of the most related variables to the photosynthetic process ...

    • Motor-imagery-based brain-computer interface using signal derivation and aggregation functions 

      Fumanal Idocin, Javier Upna Orcid; Wang, Yu-Kai; Lin, Chin-Teng; Fernández Fernández, Francisco Javier Upna Orcid; Sanz Delgado, José Antonio Upna Orcid; Bustince Sola, Humberto Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      Brain Computer Interface (BCI) technologies are popular methods of communication between the human brain and external devices. One of the most popular approaches to BCI is Motor Imagery (MI). In BCI applications, the ...

    • Multi-class strategies for joint building footprint and road detection in remote sensing 

      Ayala Lauroba, Christian; Aranda, Carlos; Galar Idoate, Mikel Upna Orcid (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      Building footprints and road networks are important inputs for a great deal of services. For instance, building maps are useful for urban planning, whereas road maps are essential for disaster response services. Traditionally, ...

    • Multi-criteria simulation-optimization analysis of usage of automated parcel lockers: a practical approach 

      Sawik, Bartosz; Serrano Hernández, Adrián Upna Orcid; Muro, Álvaro; Faulín Fajardo, Javier Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The rapid growth of electronic commerce is having an impact on the way urban logistics are organized. In metropolitan settings, the last-mile delivery problem, i.e., the problem regarding the final stage of delivering a ...
      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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