Now showing items 361-372 of 372

    • Ubiquitous connected train based on train-to-ground and intra-wagon communications capable of providing on trip customized digital services for passengers 

      Salaberria, Itziar; Perallos Ruiz, Asier; Azpilicueta Fernández de las Heras, Leyre Upna; Falcone Lanas, Francisco Javier Upna; Carballedo, Roberto; Angulo Martínez, Ignacio; Elejoste Larrucea, Pilar; Bahillo, Alfonso; Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna (MDPI, 2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      During the last years, the application of different wireless technologies has been explored in order to enable Internet connectivity from vehicles. In addition, the widespread adoption of smartphones by citizens represents ...
    • Ultra-long (275 km) random distributed feedback fiber laser for remote sensor monitoring 

      Miguel Soto, Verónica de; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena
      An interferometric sensor located 275 km away from the monitoring station has been interrogated by a double-pumped random distributed feedback fiber laser, reaching the longest distance in fiber optic remote sensing reported ...
    • Ultra-wide band corrugated gaussian profiled horn antenna design 

      Teniente Vallinas, Jorge Upna; Gonzalo García, Ramón Upna; Río Bocio, Carlos del Upna (IEEE, 2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A corrugated horn antenna design with more than 40% bandwidth is proposed in this paper. The measured radiated field patterns have a good agreement with the simulated ones. This antenna can be used in applications that ...
    • Unified analysis of glottal source spectrum 

      Arroabarren Alemán, Ixone Upna; Zivanovic, Miroslav Upna; Carlosena García, Alfonso Upna (ISCA, 2003)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The spectral study of the glottal excitation has traditionally been based on a single time-domain mathematical model of the signal, and the spectral dependence on its time domain parameters. Opposite to this approach, ...
    • Use of CBR for IP over ATM 

      Aracil Rico, Javier Upna; Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna; Donézar, C. (SPIE, 1997)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Internet traffic burstiness allows for statistical multiplexing gain in the available bandwidth of an ATM link. However, a dynamic allocation bandwidth assignment (ABR) has to be performed. In this paper we evaluate the ...
    • Using CORPS-BFN to feed multibeam antenna systems 

      Betancourt Quiñones, Diego Upna; Río Bocio, Carlos del Upna (2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, a simple example of application of the CORPS-BFN concept has been presented. A multibeam antenna system is seen as a small part of the human eye, and therefore, improving the similarity of the whole system ...
    • Using modelling techniques to analyze urban freight distribution. A case study in Pamplona (Spain) 

      Álvarez, Pablo; Serrano Hernández, Adrián; Faulín Fajardo, Javier Upna; Juan, Ángel Alejandro (Elsevier, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The city of Pamplona, in Spain, is currently experiencing several changes regarding sustainable mobility such as pedestrianization of some streets in the city center, and access control to the Old Town for motor vehicles ...
    • Utilizando CORPS-BFN para alimentar sistemas de antenas de múltiples haces 

      Betancourt Quiñones, Diego Upna; Río Bocio, Carlos del Upna (2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper present an application of the Coherently Radiating Periodic Structures - CORPS on the design of a Beam Forming Network -BFN. The Named CORPS-BFN is a novel feeding network with special behaviour characteristics ...
    • La vecindad en el valle de Roncal 

      Alli Aranguren, Juan Cruz Upna (FEDHAV, 2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      El Valle de Roncal constituye una entidad histórica que ha mantenido parte de su régimen de autogobierno en el que existió una vecindad propia de la entidad, posteriormente transformada en la de cada una de sus villas ...
    • Very short and efficient feeder design from monomode waveguide 

      Gonzalo García, Ramón Upna; Teniente Vallinas, Jorge Upna; Río Bocio, Carlos del Upna (IEEE, 1997)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, we present an original and short corrugated horn antenna profile to obtain the HE11 corrugated circular waveguide mode exciting with a pure TE11 monomode smooth circular waveguide mode. We will obtain ...
    • Video over OBS Networks 

      Espina Antolín, Félix Upna; Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna; Magaña Lizarrondo, Eduardo Upna (2008)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    • Zuntz optikoan oinarritutako sentsoreen prestazioen muga-efektu berria, egituren egoera monitorizatzea helburu 

      Iribas Pardo, Haritz; Mariñelarena Ollacarizqueta, Jon Upna; Loayssa Lara, Alayn Upna (Udako Euskal Unibertsitatea, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Brillouin denbora-eremu optikoaren analisian (BOTDA) oinarritutako sentsoreak estruktura handien (120 km luzerako estrukturak) deformazioa eta tenperatura neurtzeko gaitasuna dute, metro bateko bereizmen espazialarekin. ...