Ara es mostren els items 5710-5729 de 91060

  • Amplificador de potencia LDMOS classe E @ 700 Mhz 

    Martinez Pascual, Diego (Universitat Politècnica de Catalunya, 2009-07-24)
    Treball Final de Grau
    Accés obert
  • Amplificador de RF. Alimentació i protecció 

    Ubeda Font, Jordi (Universitat Politècnica de Catalunya, 2006)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    Aquest projecte pretén dotar d’alimentació i protecció a una etapa amplificadora de RF, Per fer-ho s’ha dissenyat i muntat una font d’alimentació a mida que a més d’incorporar les típiques etapes de rectificació, filtrat ...
  • Amplificador Wi-fi 

    Fernandez Ducable, Didac (Universitat Politècnica de Catalunya, 2008-02)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    Este trabajo explica detalladamente el proceso de fabricación de un circuito de Microondas, es decir; que opera a altas frecuencias. En él, se ha detallado específicamente todos los pasos que se deben dar para que dicho ...
  • Amplificadores multietapa de bajo en las bandas de 20 y 30ghz 

    Artal, E; Corbella Sanahuja, Ignasi; Busquets, C; Pradell i Cara, Lluís (1989)
    Text en actes de congrés
    Accés obert
    Microstrip coupled lines technology has been used to design and built low noise amplifiers in 20 and 30 GHz bands. Active devices are GaAs MESFET and HEMT in chip form. The amplifiers have input and output waveguide ...
  • Amplification of quadratic solitons 

    Torner Sabata, Lluís (1998-08)
    Article
    Accés restringit per política de l'editorial
    Amplification of spatial solitons in quadratic nonlinear media under conditions for second-harmonic generation is addressed. Under the action of gain at a given frequency band the energy has to be redistributed ...
  • Amplified catalogue of vibration reduction index formulas for junctions based on numerical simulations 

    Poblet-Puig, Jordi; Guigou-Carter, Catherine (Deutsche Gesellschaft für Akustik e.V. (DEGA), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The vibration reduction index (Kij) is a key parameter in the prediction of flanking transmissions according to the EN-12354 standard. Formulas for the evaluation of Kij in L, T and X junctions that depend on the mass ratio ...
  • Amplios terrenos urbanos de óptima ubicación: la escuela de enseñanza media en la ciudad argentina (1934-1944) 

    Fiorito, Mariana (Departament d'Urbanisme i Ordenació del Territori. Universitat Politècnica de Catalunya / Instituto del Conourbano. Universidad Nacional General Sarmiento / Instituto de Arte Americano. Universidad de Buenos Aires, 2013-06)
    Comunicació de congrés
    Accés obert
    En la Argentina de los años treinta tanto las obras de infraestructura como las de arquitectura estatal adoptaron un carácter tendiente al progreso y al desarrollo social ya que ciertos problemas sociales devinieron ...
  • Amplitude equation approach to spatiotemporal dynamics of cardiac alternans 

    Echebarría Domínguez, Blas; Karma, Alain (American Physical Society, 2007-11-30)
    Article
    Accés obert
    Amplitude equations are derived that describe the spatiotemporal dynamics of cardiac alternans during periodic pacing of one- B. Echebarria and A. Karma, Phys. Rev. Lett. 88, 208101 2002 and twodimensional homogeneous ...
  • Amplitude of weighted majority game strict representations 

    Freixas Bosch, Josep; Puente del Campo, María Albina (Institut d'Estadística de Catalunya, 1999)
    Article
    Accés obert
    Some real situations which may be described as weighted majority games can be modified when some players increase or decrease their weights and/or the quota is modified. Nevertheless, some of these modifications do not ...
  • Amygdalin analogues inhibit INF-gamma signalling reducing inflammatory response in human keratinocytes (HaCat) 

    Paoletti, Iole; De Gregorio, Vicenza; Baroni, Adone; Tufano, Maria Antonieta; Donnarumma, Giovanna; Pérez González, Juan Jesús (2013-12-02)
    Article
    Accés restringit per política de l'editorial
    Peptide T (PT), an octapeptide fragment located in the V2 region of the HIV-1 gp120- coating protein, appears to be bene fi cial in the treatment of psoriasis. Our previous investigations suggest that keratinocytes ...
  • An A(infinity)Operad in Spineless Cacti 

    Gálvez Carrillo, Maria Immaculada; Lombardi, Leandro; Tonks, Andrew (2015-11-01)
    Article
    Accés obert
    The dg operad of cellular chains on the operad of spineless cacti of Kaufmann (Topology 46(1):39-88, 2007) is isomorphic to the Gerstenhaber-Voronov dg operad codifying the cup product and brace operations on the Hochschild ...
  • An A-infinity operad in spineless cacti 

    Gálvez Carrillo, Maria Immaculada (2015-04-17)
    Report de recerca
    Accés obert
    The d.g. operad C of cellular chains on the operad of spineless cacti is isomorphic to the Gerstenhaber-Voronov operad codifying the cup product and brace operations on the Hochschild cochains of an associative algebra, ...
  • An abstract semantic framework for mobile component systems based on graph transformation (Extended abstract) 

    Mylonakis Pascual, Nicolás; Orejas Valdés, Fernando (2005-12)
    Report de recerca
    Accés obert
    The aim of this work is the definition of a generic framework for the modelling and development of component-based distributed applications with mobile processes in the internet. We describe component systems as typed ...
  • An abstraction methodology for the evaluation of multi-core multi-threaded architectures 

    Zilan, Ruken; Verdú Mulà, Javier; García Vidal, Jorge; Nemirovsky, Mario; Milito, Rodolfo; Valero Cortés, Mateo (IEEE Computer Society Publications, 2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    As the evolution of multi-core multi-threaded processors continues, the complexity demanded to perform an extensive trade-off analysis, increases proportionally. Cycle-accurate or trace-driven simulators are too slow to ...
  • An accessible interface for programming an assistive robot 

    Victores, Juan G.; Morante, Sergio; Jardón Huete, Alberto; Balaguer, Carlos (C, 2014)
    Article
    Accés obert
    In this paper, we present an accessible interface in the context of our work on bringing advanced robotics closer to everyday domestic users. This interface allows inexperienced users to be capable of programming ...
  • An accounting system to support process improvements: transition to lean accounting 

    Ruiz de Arbulo-López, Patxi; Fortuny i Santos, Jordi (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2010-12)
    Article
    Accés obert
    From the last two decades of the 20th Century on, many companies have adopted production strategies that could be termed “lean manufacturing”. Lean team leaders state that traditional costing systems fail to properly assess ...
  • An accurate and Verilog-A compatible compact model for graphene field-effect transistors 

    Landauer, Gerhard Martin; González Jiménez, José Luis; Jiménez Jiménez, David (2014-06-04)
    Article
    Accés restringit per política de l'editorial
    The present paper provides an accurate drift-diffusion model of the graphene field-effect transistor (GFET). A precise yet mathematically simple current-voltage relation is derived by focusing on device physics at energy ...
  • An accurate FIC-FEM formulation for the 1D convection-diffusion-reaction equation 

    Oñate Ibáñez de Navarra, Eugenio; Miquel Canet, Juan; Nadukandi, Prashanth (2016-01)
    Article
    Accés restringit per política de l'editorial
    In this paper we present an accurate stabilized FIC-FEM formulation for the 1D advection-diffusion-reaction equation in the exponential and propagation regimes using two stabilization parameters. Both the steady-state and ...
  • An acoustic valve within the nose of sperm whales Physeter macrocephalus 

    Huggenberger, Stefan; André, Michel; Oelschläger, Helmut A. (2014-04-01)
    Article
    Accés restringit per política de l'editorial
    Sperm whales Physeter macrocephalus emit impulsive sound signals in short series of rhythmic clicks (codas) for communication, and in long series of single acoustic events (usual clicks) for echolocation. Both click types ...
  • An acousto-ultrasonics pattern recognition approach for damage detection in wind turbine structures 

    Anaya Vejar, Maribel; Tibaduiza Burgos, Diego Alexander; Forero, Edwin; Castro, Rafael; Pozo Montero, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Comunicació de congrés
    Accés obert
    The design of a Structural Health Monitoring (SHM) systems is a requirement in the task of improving the safety and maintainability of the structures. Among the multiple techniques available for health monitoring, ...