Now showing items 38288-38307 of 79718

  • Ground plane booster antenna technology for wireless handheld devices 

    Andújar Linares, Aurora (Universitat Politècnica de Catalunya, 2013-10-04)
    Doctoral thesis
    Open Access
  • Ground plane boosters to provide multi-band operation in wireless handheld devices 

    Andújar, A.; Anguera Pros, Jaume; Puente Baliarda, Carles (2011)
    Conference report
    Restricted access - publisher's policy
    Recent demand for multifunctional wireless devices has increased the challenge for the antenna designe rs, who has to address it by providing small antennas able to oper ate in multiple communication standards. This ...
  • Ground state of small mixed helium and spin-polarized tritium clusters: A quantum Monte Carlo study 

    Stipanovic, P.; Markic, L. Vranjes; Boronat Medico, Jordi; Kezic, B. (2011-02-07)
    Article
    Restricted access - publisher's policy
    We report results for the ground-state energy and structural properties of small 4He–T↓ clusters consisting of up to four T↓ and eight 4He atoms. These results have been obtained using very well-known 4He–4He and T↓– T↓ ...
  • Ground states in Mathematical Physics 

    Doce Llisó, Edurne (Universitat Politècnica de Catalunya, 2015-09)
    Bachelor thesis
    Open Access
    The main aim of this bachelor's thesis is to introduce the concept of a ground state and prove its existence for the nonlinear diffusion equation $$ -\Delta u + a u = b |u|^\alpha u \ \ \text{in} \ \mathbb{R}^N, $$ as well ...
  • Ground Stations Scheduling with Genetic Algorithm 

    Sun, Junzi (Universitat Politècnica de Catalunya, 2009-07-02)
    Master thesis
    Restricted access - author's decision
    TThis work presents a Genetic Algorithm (GA) approach to Ground Station (GS) and Spacecraft (SC) Scheduling problem, which is based on the space missions and ground stations from ESA (European Space Agency). Genetic ...
  • Ground target chasing with a unmanned aerial vehicle 

    Mas Montserrat, Daniel (Universitat Politècnica de Catalunya, 2015-09)
    Bachelor thesis
    Open Access
    Ground target chasing systems using Unmanned Aerial Vehicles are increasingly used in aerial photography and film recording. In most of the cases GPS-based system is not useful and the use of computer vision is required. ...
  • Ground topography estimation on over forests considering polarimetric SAR interferometry 

    López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (2010)
    Conference report
    Open Access
    The work detailed in this paper analyzes the topographic phase retrieval process on forested areas by means of Polarimetric Interferometric SAR data. On the basis of the Random Volume over Ground scattering model, an ...
  • Ground topography retrieval on forested areas based on polarimetric SAR interferometry 

    López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Alonso García, Alberto; Papathanassiou, Kostantinos (2010)
    Conference report
    Restricted access - publisher's policy
    The work shown in this paper analyzes the topographic phase retrieval process on forested areas by means of Polarimetric Interferometric SAR (PolInSAR) data. On the basis of the Random Volume over Ground scattering model, ...
  • Ground-based polarimetric SAR interferometry for the monitoring of terrain displacement phenomena-part I: theoretical description 

    Iglesias González, Rubén; Aguasca Solé, Alberto; Fabregas Canovas, Francisco Javier; Mallorquí Franquet, Jordi Joan; Monells Miralles, Daniel; López Martínez, Carlos; Pipia, Luca (2015-03-01)
    Article
    Open Access
    Ground-based synthetic aperture radar (SAR) (GB-SAR) sensors represent an effective solution for the monitoring of ground displacement episodes. Initially, the most GB-SAR sensors were based on vector network analyzers ...
  • Ground-based polarimetric SAR interferometry for the monitoring of terrain displacement phenomena-part II: applications 

    Iglesias González, Rubén; Aguasca Solé, Alberto; Fabregas Canovas, Francisco Javier; Mallorquí Franquet, Jordi Joan; Monells Miralles, Daniel; López Martínez, Carlos; Pipia, Luca (2015-03-01)
    Article
    Open Access
    Urban subsidence and landslides are among the greatest hazards for people and infrastructure safety and they require an especial attention to reduce their associated risks. In this framework, ground-based synthetic aperture ...
  • Ground-based SAR imaging basics and land clutter effects on the focused image 

    Lort Cuenca, Marc (Universitat Politècnica de Catalunya, 2014-09-10)
    Master thesis
    Open Access
    Remote Sensing is the science and art of obtaining information about an object, area, or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under ...
  • Ground-level ozone concentration over Spain: an application of Kalman Filter post-processing to reduce model uncertainties 

    Sicardi, Valentina; Ortiz, Joana; Rincón, Ángel; Jorba Casellas, Oriol; Pay Pérez, M. Teresa; Gassó Domingo, Santiago; Baldasano Recio, José María (2011-02-15)
    Article
    Open Access
    The CALIOPE air quality modelling system, namely WRF-ARW/HERMESEMEP/ CMAQ/BSC-DREAM8b, has been used to perform the simulation of ground level O3 concentration for the year 2004, over the Iberian Peninsula. We use this ...
  • Grounds of two positions photovoltaic panels 

    Castán Fortuño, Fernando (Universitat Politècnica de Catalunya / Budapest University of Technology and Economics, 2008)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
    The objective of this Master Thesis is to find the optimum positioning for a two positions photovoltaic panel. Hence, it will be implemented a model in order to optimize the energy of the sun that the photovoltaic panel ...
  • Groundwater flow and recharge in the Doñana aquifer system (Huelva, SW Spain) from temperatures profiles in boreholes 

    Custodio Gimena, Emilio (2011)
    Conference report
    Restricted access - publisher's policy
    A recent morphological and hydrogeological description of the Doñana areas can be found in Custodio et al. (2009). It is the largest seminatural area of Western Europe and holds a 3000km2 aquifer system. The territory was ...
  • Groundwater in Spain: legal framework and management issues 

    Molinero Huguet, Jorge José; Custodio Gimena, Emilio; Sahuquillo Herráiz, Andrés; Llamas, M. Ramón (CRC Press/Balkema, 2011)
    Part of book or chapter of book
    Restricted access - publisher's policy
    Spain is a country with a large hydrogeologic potential. As in other southern European countries the water resources, besides urban supply, are used mainly for irrigation and much of the groundwater abstraction is concentrated ...
  • Groundwater modelling in the urban area of Barcelona 

    Vázquez Suñé, Enric; Carrera Ramírez, Jesús; Sánchez Vila, Francisco Javier; Abarca Cameo, Elena; Arandes Renú, Ramon (Springer, 2005)
    Part of book or chapter of book
    Open Access
  • Groundwater quality and quantity assessment through a dedicated monitoring network: the Doñana aquifer experience (SW Spain) 

    Manzano Arellano, María del Sol; Custodio Gimena, Emilio; Montes, Carlos; Mediavilla, Carlos (John Wiley & Sons, 2009)
    Part of book or chapter of book
    Restricted access - publisher's policy
  • Groundwater salinity process, mitigation measures and economic assessment: an example from an intensive agricultural area 

    Aparicio del Moral, Jesus Omar; Alfranca Burriel, Òscar; Jiménez Martinez, Joaquin; García Aróstegui, J.L.; Candela Lledó, Lucila; López, Jose Luis (Asociación Internacional de Hidrogeólogos (AIH), 2015)
    Conference report
    Open Access
    To satisfy water demand in the arid climate area (SE Spain), small private desalination plants (more than 1000) of brackish groundwater are in operation. This process has led to an increase of groundwater salinity as a ...
  • Groundwater teaching at University level in Spain 

    Custodio Gimena, Emilio; Gurguí, Antoni; Batista, Eduard (John Wiley & Sons, 2009)
    Part of book or chapter of book
    Restricted access - publisher's policy
  • Group decision-making system based on a qualitative location function: an application to chocolates design 

    Agell Jané, Núria; Sánchez Hernández, Germán; Sánchez Soler, Monica; Ruiz Vegas, Francisco Javier (2013)
    Conference lecture
    Open Access
    When a group of experts is involved in the design of a new product as a team, consensus and Group decision making (GDM) techniques able to deal with complex descriptions are required. In addition, individual decisions ...