Now showing items 2055-2074 of 2090

    • Wage stickiness and unemployment fluctuations: an alternative approach 

      Casares Polo, Miguel Upna; Moreno, Antonio Upna; Vázquez, Jesús (Springer, 2012)   Artículo / Artikulua  OpenAccess
      Erceg et al. (J Monet Econ 46:281–313, 2000) introduce sticky wages in a New-Keynesian general-equilibrium model. Alternatively, it is shown here how wage stickiness may bring unemployment fluctuations into a New-Keynesian ...
    • A water content continuous monitoring of grapevine xylem tissue using a portable low-power cost-effective FMCW radar 

      Quemada Mayoral, Carlos; García González, Cebrián; Iriarte Galarregui, Juan Carlos Upna; Marín Ederra, Diana; Gastón Beraza, Diego; Miranda Jiménez, Carlos Upna; Gonzalo García, Ramón Upna; Maestrojuán Biurrun, Itziar Upna; Santesteban García, Gonzaga Upna; Ederra Urzainqui, Íñigo Upna (IEEE, 2019)   Artículo / Artikulua
      This paper presents the real-time monitoring of a grapevine’s water content that flows up through the xylem tissue by means of a frequency-modulated continuous-wave (FMCW) radar. The application of an optimization process, ...
    • Watering or buffering? Runoff and sediment pollution control from furrow irrigated fields in arid environments 

      Campo-Bescós, Miguel Ángel Upna; Muñoz Carpena, Rafael; Kiker, Gregory A.; Bodah, Brian W.; Ullman, Jeffrey L. (Elsevier, 2015)   Artículo / Artikulua  OpenAccess
      Surface irrigated agriculture in arid and semi-arid regions contributes to downstream environmental degradation. Changes in irrigation system operational scenarios (ISOS) can represent an economic alternative to reduce ...
    • Watt-level green random laser at 532  nm by SHG of Yb-doped fiber laser 

      Rota Rodrigo, Sergio Upna; Gouhier, B.; Dixneuf, C.; Antoni Micollier, L.; Guiraud, G.; Leandro González, Daniel Upna; López-Amo Sáinz, Manuel Upna; Traynor, N.; Santarelli, G. (Optical Society of America, 2018)   Artículo / Artikulua  OpenAccess
      We have developed a Watt-level random laser at 532 nm. The laser is based on a 1064 nm random distributed ytterbium-gain assisted fiber laser seed with a 0.35 nm line-width and 900 mW polarized output power. A study for ...
    • Wavelength and phase detection based SMS fiber sensors optimized with etching and nanodeposition 

      Cardona-Maya, Yamile; Del Villar, Ignacio Upna; Socorro Leránoz, Abián Bentor Upna; Corres Sanz, Jesús María Upna; Matías Maestro, Ignacio Upna; Botero-Cadavid, Juan F. (IEEE, 2016)   Artículo / Artikulua  OpenAccess
      The development of an optical fiber refractometer by hydrogen fluoride etching and sputtering deposition of a thin-film of indium tin oxide on a single-mode-multimode-single-mode fiber structure has been analyzed with ...
    • Wavelet-based detection of transcriptional activity on a novel Staphylococcus aureus tiling microarray 

      Segura, Víctor; Toledo Arana, Alejandro Upna; Uzqueda, Maite; Lasa Uzcudun, Íñigo Upna; Muñoz Barrutia, Arrate (BioMed Central, 2012)   Artículo / Artikulua  OpenAccess
      Background: High-density oligonucleotide microarray is an appropriate technology for genomic analysis, and is particulary useful in the generation of transcriptional maps, ChIP-on-chip studies and re-sequencing of the ...
    • WDM bi-directional transmission over 35 km amplified fiber-optic bus network using Raman amplification for optical sensors 

      Díaz Lucas, Silvia Upna; Lasheras, Gorka; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2005)   Artículo / Artikulua  OpenAccess
      We demonstrate a novel distributed fiber Raman amplified bus topology used for WDM transmission over 35 km of single-mode fiber by use of a multiwavelength Raman pump laser and eight Fiber Bragg gratings (FBGs). This ...
    • The weak data on the water–energy nexus in Spain 

      Sesma Martín, Diego Upna; Rubio Varas, María del Mar Upna (IWA Publishing, 2019)   Artículo / Artikulua
      This paper focuses on the fact that the water–energy nexus remains an irrelevant issue on the energy policy agenda and on the priorities of the energy leaders in Spain. This is a striking fact given that this takes place ...
    • Weightable quasi-metrics related to fuzzy sets 

      Campión Arrastia, María Jesús Upna; García Catalán, Olga Raquel Upna; Induráin Eraso, Esteban Upna; Valero, Óscar (Hacettepe University (Turquía), 2018)   Artículo / Artikulua  OpenAccess
      We show that the definition of a fuzzy set is directly related to the existence of a weightable quasi-metric on a universe. This relationship is also explored in terms of functional equations coming either from the membership ...
    • What does it mean to be well-informed? Rhetorics, perceptions and attitudes on the problem of transgenic food labelling 

      Larrión Cartujo, Jósean Upna (Centro de Investigaciones Sociológicas, 2016)   Artículo / Artikulua  OpenAccess
      In this research, we develop a case study, focused on Spain and the European Union, on the controversy over the labelling of transgenic foods. This paper firstly compares the social discourses that conceive labelling ...
    • What drives firm profitability? A multilevel approach to the Spanish agri-food sector 

      Zouaghi, Ferdaous Upna; Sánchez García, Mercedes Upna; Hirsch, Stefan (Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), 2017)   Artículo / Artikulua  OpenAccess
      Strategic management research has demonstrated the importance of firm- and industry structure as drivers of firm profitability. However, less is known about how firms´ geographical locations affect profitability. Applying ...
    • What have we learned from brucellosis in the mouse model? 

      Grilló Dolset, María Jesús; Blasco, José María Upna; Gorvel, Jean-Pierre; Moriyón Uría, Ignacio; Moreno, Edgardo (BioMed Central, 2012)   Artículo / Artikulua  OpenAccess
      Brucellosis is a zoonosis caused by Brucella species. Brucellosis research in natural hosts is often precluded by practical, economical and ethical reasons and mice are widely used. However, mice are not natural Brucella ...
    • When multinationals leave: a CGE analysis of the impact of divestments 

      Gómez Gómez-Plana, Antonio Upna; Latorre, María C. (Kiel Institute for World EconomyZBW – Leibniz Information Centre for Economics, 2014)   Artículo / Artikulua  OpenAccess
      Most studies on Multinational Enterprises (MNEs) focus on the impact of their expansion through inward or outward foreign direct investment (FDI) flows. However, divestments are quite common among the operations of MNEs. ...
    • Who are the potential consumers of organic fruits and vegetables in Central Chile? A CHAID approach 

      Adasme-Berríos, Cristian; Sánchez García, Mercedes Upna; Jara-Rojas, Roberto; Engler, Alejandra; Rodríguez, Marcelo; Mora, Marcos (Universidad Nacional de Cuyo (Argentina), 2015)   Artículo / Artikulua  OpenAccess
      La demanda por frutas y verduras (F&V) orgánicas está creciendo alrededor del mundo, creando oportunidades de mercado para los países en desarrollo como principales proveedores. Sin embargo, la mayoría de los países en ...
    • Wide angle terahertz sensing with a cross-dipole frequency selective surface 

      Rodríguez Ulibarri, Pablo Upna; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna (AIP Publishing, 2016)   Artículo / Artikulua  OpenAccess
      In this work, a terahertz sensor based on a cross dipole frequency selective surface is analyzed and experimentally tested. The sensing structure is optimized for operation at the fundamental band- stop resonance near ...
    • Wideband backscattering reduction at terahertz using compound reflection grating 

      Orazbayev, Bakhtiyar Upna; Rodríguez Ulibarri, Pablo Upna; Beruete Díaz, Miguel Upna (Optical Society of America, 2017)   Artículo / Artikulua  OpenAccess
      Backscattering reduction is usually achieved by using either absorbers or diffractions gratings at the expense of a narrow bandwidth. In this paper, we propose a different strategy based on a metallic compound reflection ...
    • Wideband channel modeling for mm-wave inside trains for 5G-related applications 

      Moreno García-Loygorri, Juan; Briso Rodríguez, César; Arnedo Gil, Israel Upna; Calvo, César; Gómez Laso, Miguel Ángel Upna; He, Danping; Jiménez, Florentino; González Posadas, Vicente (Hindawi / Wiley, 2018)   Artículo / Artikulua  OpenAccess
      Passenger trains and especially metro trains have been identified as one of the key scenarios for 5G deployments. The wireless channel inside a train car is reported in the frequency range between 26.5GHz and 40GHz. These ...
    • Wideband unidirectional transmission with tunable sign-switchable refraction and deflection in nonsymmetric structures 

      Rodríguez Ulibarri, Pablo Upna; Beruete Díaz, Miguel Upna; Navarro Cía, Miguel Upna; Serebryannikov, Andriy E. (American Physical Society, 2013)   Artículo / Artikulua  OpenAccess
      A general theory of reciprocal unidirectional transmission with tunable sign-switchable refraction and deflection of outgoing wave in structures with broken spatial inversion symmetry is presented. Several coupling scenarios ...
    • Will small energy consumers be faster in transition? Evidence from the early shift from coal to oil in Latin America 

      Rubio Varas, María del Mar Upna; Folchi, Mauricio (Elsevier, 2012)   Artículo / Artikulua  OpenAccess
      This paper provide evidence of the early transition from coal to oil for 20 Latin American countries over the first half of the 20th century, which does not fit the transition experiences of large energy consumers. These ...
    • Wood zone plate fishnet metalens 

      Orazbayev, Bakhtiyar Upna; Beruete Díaz, Miguel Upna; Navarro Cía, Miguel Upna (EDP Sciences, 2015)   Artículo / Artikulua  OpenAccess
      Fresnel-zone plate lenses provide focusing performance while having low profile. Unfortunately, they usually display higher reflection losses than conventional dielectric lenses. Here, we demonstrate a low-profile Wood ...