Envíos recientes

  • Adjusting fuzzy automata for string similarity measuring 

    Astrain Escola, José Javier; Villadangos Alonso, Jesús; González de Mendívil Moreno, José Ramón; Garitagoitia Padrones, José Ramón; Farina Figueredo, Federico (EUSFLAT, 2001)   Congreso / Biltzarra
    In this paper, we introduce a fuzzy automaton for computing the similarity between pairs of strings and a genetic method for adjusting its parameters. The fuzzy automaton models the edit operations needed to transform ...
  • Modelling of vibrato production 

    Arroabarren Alemán, Ixone; Carlosena García, Alfonso (2004)   Congreso / Biltzarra
    In this paper, a novel Non-Interactive Source-Filter model for singing voice, incorporating vibrato, is proposed. In this way the periodic frequency variation, peculiar to vibrato is included in a simplified signal model ...
  • On fuzzy orderings of crisp and fuzzy intervals 

    Fuentes González, Ramón; Burillo López, Pedro; Mayor, Gaspar (EUSFLAT, 2001)   Congreso / Biltzarra
    First, fuzzy membership functions for the assertion '[x,y] is a positive interval' are proposed and characterized via non-decreasing real maps. Last, using those functions together with the intervaldifference and the ...
  • Characterization of microring filters for differential group delay applications 

    Doménech, D.; Chamorro Posada, P.; Fraile Pelaez, F.J.; Erro Betrán, María José; Tainta Ausejo, Santiago; Muriel, M.A.; Baños, R.; Bolten, J.; Kleinjans, H. (IEEEOptical Society of America, 2017)   Artículo / Artikulua
    The longitudinal offset technique permits to improve the accuracy of the coupling coefficients of integrated directional couplers and provides designs that can be easily implemented with current fabrication tolerances. ...
  • El conflicto de valores. Análisis de la pluralidad de valores en las sociedades diferenciadas: génesis, antagonismo y prioridades valorativas de los individuos 

    Olea Movilla, Ana María (2014)   Tesis Doctoral / Doktoretza tesia
    Esta tesis analiza los valores que priorizan las personas que conforman las sociedades actuales, mostrando su antagonismo y algunas consecuencias de la elección de los mismos. En la primera parte, se realiza una investigación ...
  • Comportamiento de propagacion electromagnetica en el apilamiento de agujeros sublambda y agujeros propagantes 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Falcone Lanas, Francisco Javier; Campillo, Igor; Sorolla Ayza, Mario (2009)   Congreso / Biltzarra
    In this work, we provide more insight on the physics underlying the transmission through subwavelength hole arrays metaprism by comparing it with propagating hole arrays prism. We show the critical role that the size ...
  • Lentes metálicas basadas en el fenómeno de transmisión extraordinaria para conseguir índices de refracción negativos 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Sorolla Ayza, Mario; Campillo, Igor (2009)   Congreso / Biltzarra
    In this communication we report plano-concave and bi-concave metamaterial lenses based on the close stack of subwavelegnth hole arrays. Contrary to what is expected from cut-off holes, an engineered array of holes ...
  • Cooperative detection applied to THz imaging cameras 

    Lizarraga Cubillos, Juan; Betancourt Quiñones, Diego; Río Bocio, Carlos del (2009)   Congreso / Biltzarra
    THz technology for developing imaging systems has recently aroused great interest, mainly due to the large number of applications in which these frequencies can be used: security, vision in hard environments, etc. The ...
  • Experimental demonstration of phase resonances in metallic compound gratings with subwavelength slits in the millimeter wave regime 

    Navarro Cía, Miguel; Skigin, Diana C.; Beruete Díaz, Miguel; Sorolla Ayza, Mario (AIP Publishing, 2009)   Artículo / Artikulua
    We provide experimental evidence of phase resonances in metallic periodic structures in which each period comprises several subwavelength slits of the same width. We have analyzed and measured the response of these ...
  • Negative refraction through an extraordinary transmission left-handed metamaterial slab 

    Beruete Díaz, Miguel; Navarro Cía, Miguel; Sorolla Ayza, Mario; Campillo, Igor (American Physical Society, 2009)   Artículo / Artikulua
    In this work we present numerical and experimental results of negative refraction through a negative index metamaterial based on miniaturized extraordinary transmission stacked subwavelength hole arrays, also known as ...
  • Converging biconcave metallic lens by double-negative extraordinary transmission metamaterial 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Sorolla Ayza, Mario; Campillo, Igor (AIP Publishing, 2009)   Artículo / Artikulua
    In this letter we present simulation and experimental results of a left-handed converging biconcave metallic lens made of stacked subwavelength hole arrays SSHAs working in the millimeter wave range with additional ...
  • Design of beam-forming networks for scannable multi-beam antenna arrays using CORPS 

    Panduro, M.A.; Río Bocio, Carlos del (EMW Publishing, 2008)   Artículo / Artikulua
    This paper deals with the design of beam-forming networks (BFN) for scannable multibeam antenna arrays using Coherently Radiating Periodic Structures (CORPS). This design of CORPS-BFN considers the optimization of the ...
  • EBG superstrate antenna for WAAS bands 

    Osés de León, Ángel; Iriarte Galarregui, Juan Carlos; Ederra Urzainqui, Íñigo; Gonzalo García, Ramón (2008)   Congreso / Biltzarra
    Multiband antennas can simplify considerably the complexity of receivers and transmitters, reducing the size and the mass of the conventional configurations. On the other hand, applications with high directivity requirements ...
  • Polarization selection with stacked hole array metamaterial 

    Beruete Díaz, Miguel; Navarro Cía, Miguel; Sorolla Ayza, Mario; Campillo, Igor (AIP Publishing, 2008)   Artículo / Artikulua
    Polarization rotation or selection appears in materials with optical activity, or those with Faraday effect, or in liquid crystals. In this letter we present a structure, with an analogous response, using stacked ...
  • Low profile multi-frequency dipole antenna array based on planar meta-surfaces 

    Sáenz Sainz, Elena; Ikonen, Pekka; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Tretyakov, Sergei; Maagt, Peter de (IEEE, 2007)   Congreso / Biltzarra
    In this paper, the radiation performance of a low profile multi-frequency dipole antenna array with a planar meta-surface is presented. The meta-surface consists of two closely located parallel grids of short dipoles and ...
  • Utilizando CORPS-BFN para alimentar sistemas de antenas de múltiples haces 

    Betancourt Quiñones, Diego; Río Bocio, Carlos del (2007)   Congreso / Biltzarra
    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 ...
  • Planar DNG superstrate for dipole antenna gain enhancement 

    Sáenz Sainz, Elena; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Ikonen, Pekka; Tretyakov, Sergei; Maagt, Peter de (2007)   Congreso / Biltzarra
    In this paper, a volumetric double-negative (DNG) superstrate based on grids of dipoles and wires for dipole antenna applications is proposed.
  • Using CORPS-BFN to feed multibeam antenna systems 

    Betancourt Quiñones, Diego; Río Bocio, Carlos del (2007)   Congreso / Biltzarra
    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 ...
  • A metamaterial T-junction power divider 

    Sáenz Sainz, Elena; Cantora Álvarez, Alejandro; Ederra Urzainqui, Íñigo; Gonzalo García, Ramón; Maagt, Peter de (IEEE, 2007)   Artículo / Artikulua
    A metamaterial based compact microstrip T-junction power divider working at 10 GHz is proposed. The metamaterial unit cell consists of microstrip gaps and via holes whose behavior is equivalent to the combination of ...
  • La formación del profesorado de Educación Infantil. Una trayectoria desde la LGE hasta la LOE 

    Albertín Lasaosa, Ana María; Zufiaurre Goicoechea, Benjamín (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2005)   Libro / Liburua

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