Ara es mostren els items 6651-6670 de 92895

  • Analysis of diversity and equalization techniques applied to M-QAM digital mobile radio systems 

    Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 1994)
    Text en actes de congrés
    Accés obert
    Presents an investigation of diversity and/or equalization techniques applied to 4 and 16-QAM TDMA radio systems for rapid fading dispersive channels. In particular, typical urban (TU) environments have been considered. A ...
  • Analysis of domino effect in pipelines 

    Ramírez Camacho, Jaime Giovanni; Pastor Ferrer, Elsa; Casal Fàbrega, Joaquim; Amaya Gomez, Rafael; Muñoz Giraldo, Felipe (2015-11-15)
    Article
    Accés restringit per política de l'editorial
    Parallel pipelines are frequently installed over long distances, due to the difficulty in creating or maintaining the required corridor. This implies that a release in one pipeline can seriously affect another one. The ...
  • Analysis of downlink and uplink decoupling in dense cellular networks 

    Aravanis, Alexios; Muñoz Medina, Olga; Pascual Iserte, Antonio; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Decoupling uplink (UL) and downlink (DL) is a new architectural paradigm where DL and UL are not constrained to be associated to the same base station (BS). Building upon this paradigm, the goal of the present paper is to ...
  • Analysis of droplet dynamics on the GDL surface of a PEM fuel cell cathode 

    Jarauta Arabí, Àlex (Universitat Politècnica de Catalunya, 2013-06-28)
    Projecte Final de Màster Oficial
    Accés obert
    A fuel cell is an electrochemical device that has the ability to turn the chemical energy in a fuel directly into electricity with high e ciency. Inside the fuel cell, oxidation and reduction electrochemical reactions ...
  • Analysis of electrically large concave scatterers with the integral equation mei 

    Rius Casals, Juan Manuel; Carpintero, C Pérez; Cardama Aznar, Ángel; Michalski, Krzysztof (1997-04)
    Article
    Accés restringit per política de l'editorial
    The integral equation MEI (IE-MEI) is a new, sparse matrix formulation of the boundary-element method, which is particularly well suited for large convex scatterers. In this Letter we explain why the original implementation ...
  • Analysis of energetic radiation associated with thunderstorms in the Ebro delta region in Spain 

    Fabró Tàpia, Ferran; Montañá Puig, Juan; Pineda Rüegg, Nicolau; Argemí Ribera, Oriol; Van der Velde, Oscar Arnoud; Romero Durán, David; Soula, Serge (2016-08-25)
    Article
    Accés obert
    The analysis of high-energy background radiation (0.1 – 2 MeV) enhancements during eight winter thunderstorms and ¿ve summer storms in the Ebro delta region in the northeast of Spain is presented. For the ¿rst time, ...
  • Analysis of energy efficient distributed neighbour discovery mechanisms for machine-to-machine networks 

    Vazquez, Francisco; Alonso-Zarate, J.; Alonso Zárate, Luis Gonzaga; Dohler, Mischa (Elsevier, 2013-03-26)
    Article
    Accés restringit per política de l'editorial
    Energy efficiency is one of the main challenges of Machine-to-Machine (M2M) networks, since they aim at connecting devices with limited access to power sources and operate without human intervention. It has been shown ...
  • Analysis of epileptic EEG signals in children by symbolic dynamics 

    Paternoster, Luca; Vallverdú Ferrer, Montserrat; Melia, Umberto Sergio Pio; Claria, Francisco; Voss, Andreas; Caminal Magrans, Pere (2013)
    Comunicació de congrés
    Accés restringit per política de l'editorial
  • Analysis of ettringite attack to stabilized railway bases and embankments 

    Ramon Tarragona, Anna; Alonso Pérez de Agreda, Eduardo (2013)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Two cases of massive sulphate attack to cement treated embankments and track bases in a high speed railway line are described. In the first case, two large access embankments to a railway viaduct were treated with jet–grouting ...
  • Analysis of evaluation instruments on Engineering Degrees 

    Martínez, María; Olmedo Torre, Noelia; Amante García, Beatriz; Farrerons Vidal, Óscar; Cadenato Matia, Ana María (EUETIB, 2013-12)
    Comunicació de congrés
    Accés obert
    This work presents an analysis that has been done about the assessment tools used by the professors of the Universitat Politécnica de Catalunya to assess the generic competencies introduced in the Bachelor’s Degrees in ...
  • Analysis of experimental data obtained at a sounding rocket campaign 

    Duarte Medina, Laura (Universitat Politècnica de Catalunya, 2010-05-19)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    An analysis of experimental data obtained in a sounding rocket campaign is presented. Data were obtained in the sounding rocket Rexus-V launch, as part of a student campaign organized by ESA (European Space Agency). We ...
  • Analysis of extreme rainfall in Barcelona using a microscale rain gauge network 

    Casas Castillo, M. del Carmen; Rodríguez Solá, Raúl (2010-03-01)
    Article
    Accés obert
    Extreme storms registered by the urban rain gauge network installed and supported by CLABSA (Clavegueram de Barcelona S. A.) in Barcelona in the period 1994–2001 have been investigated. Eleven rain events presenting ...
  • Analysis of extreme rainfall in the Ebre Observatory (Spain) 

    Pérez Zanón, Núria; Casas Castillo, M. del Carmen; Rodríguez Solá, Raúl; Peña, Juan Carlos; Rius, Anna; Solé, J. Germán; Redaño Xipell, Angel (2015-04-25)
    Article
    Accés obert
    Relationship between maximum rainfall rates for time intervals between 5 minutes and 24 hours has been studied from almost a century (1905-2003) of rainfall data registered in the Ebre Observatory (Tarragona, Spain). ...
  • Analysis of factors that influence the ICT adoption by SMEs in Colombia 

    Osorio-Gallego, Carlos; Londoño-Metaute, John; López-Zapata, Esteban (OmniaScience, 2016-06)
    Article
    Accés obert
    Purpose: The objective of this article is to analyze the factors that influence the adoption of Information and Communication Technologies (ICT) by SMEs in Colombia. Design/methodology: To prove empirically these hypotheses, ...
  • Analysis of ferroresonance effects in distribution networks with distributed source units 

    Monadi, Mehdi; Luna Alloza, Álvaro; Candela García, José Ignacio; Rocabert Delgado, Joan; Fayezizadeh, Mostafa; Rodríguez Cortés, Pedro (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The connection of Distributed Generation (DG) units to existing networks may give rise to harmful effects on the network and the DG units itself. Therefore, due to increasing penetration of DG units, it is important to ...
  • Analysis of fin-and-tube evaporators in no-frost domestic refrigerators 

    Oliet Casasayas, Carles; Pérez Segarra, Carlos David; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2010)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    This paper summarizes the research work carried out by the authors on domestic refrigerator no-frost evaporators. It includes an explanation of the experimental unit that is currently being constructed to test isobutane ...
  • Analysis of five Gigantic Jets observed near Réunion Island with video and photographic cameras 

    Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Huet, Patrice; Barthe, Christelle; Bor, Jozsef (Elsevier, 2011)
    Text en actes de congrés
    Accés obert
    Five gigantic jets (GJ) have been recorded by a camera on March 7th 2010, at a very closedistance above an isolated tropical storm east of Réunion Island. Three of them were produced within about 4 minutes before the storm ...
  • Analysis of fixturing quality for a variable number of fixturing points and friction values 

    Penalba, Francesc; Rosell Gratacòs, Jan; Suárez Feijóo, Raúl (IEEE Computer Society Publications, 2009)
    Text en actes de congrés
    Accés obert
    This paper copes with the automatic determination of fixturing points on 2D and 3D free-form objects, for any number of fixturing points and a variable friction coefficient at the contacts. A software tool that implements ...
  • Analysis of flame length amd lift-off of jet fires 

    Vesipa, Marco (Universitat Politècnica de Catalunya, 2014-10)
    Projecte Final de Màster Oficial
    Accés obert