Now showing items 21-40 of 50

    Hierarchical data-driven modelling of binary black hole mergers 

    Jiménez Forteza, Francisco (Date of defense: 2017-09-05)

    [eng]Throughout history, human beings have received and interpreted information from distant stars and galaxies through electromagnetic waves (light). Until 2015 this was the dominant way for observing astrophysical ...

    High-frequency waves and instabilities in multi-fluid partially ionized solar plasmas 

    Martínez Gómez, David (Date of defense: 2018-01-17)

    The solar atmosphere is a highly dynamic environment in which a huge diversity of waves and instabilities has been detected. The matter in that region is in plasma state, and thus is affected by the presence of electromagnetic ...

    Human mobility: data analysis, theory and models 

    Mazzoli, Mattia (Date of defense: 2021-07-26)

    [eng] Like Columbus mistook America for India, we stepped into the era of misinformation mistaking it for the era of big data. Since the digital revolution in the early ’90s we started producing such a huge amount of data ...

    Impact of large-scale atmospheric variability on sea level and wave climate 

    Martínez Asensio, Adrián (Date of defense: 2015-09-28)

    This thesis aims at quantitatively characterizing the recent (last few decades) and future climate variability of marine climate in the Western Mediterranean Sea and the North Atlantic Ocean. Namely it focuses on sea level ...

    Implementación en hardware de sistemas de alta fiabilidad basados en metodologías estocásticas 

    Canals Guinand, Vicente José (Date of defense: 2012-07-27)

    La sociedad actual demanda cada vez más aplicaciones computacionalmente exigentes y que se implementen de forma energéticamente eficiente. Esto obliga a la industria del semiconductor a mantener una continua progresión ...

    Individual-based models of collective dynamics in socio-economic systems 

    Carro Patiño, Adrián (Date of defense: 2016-09-29)

    The main purpose of this thesis is to contribute to the understanding of how complex collective behaviors emerge in social and economic systems. To this end, we use a combination of mathematical analysis and computational ...

    MEDICANES: meteorological environments and risk assessment in the present and future climate 

    Tous Nadal, Maria (Date of defense: 2015-09-18)

    Medicanes are a rare and physically unique type of Mediterranean cyclone. They show similarities with tropical cyclones with regard to their development (based on the thermodynamical disequilibrium between the warm sea ...

    Mesoscale eddies in the western mediterranean sea: characterization and understanding from satellite observations and model simulations 

    Escudier, Romain (Date of defense: 2015-01-21)

    Mesoscale eddies are relatively small structures that dominate the ocean variability and have large impact on large scale circulation, heat fluxes and biological processes.In the western Mediterranean Sea, a high number ...

    Mesoscale hydrodynamics around the Balearic Islands: spatio-temporal variability and its relation with shing resources. 

    Amores Maimó, Angel Miguel (Date of defense: 2014-07-09)

    The Balearic Islands, located in the Western Mediterranean Sea, are the natural limit between the Balearic subbasin, at the noth and the Algerian subbasin, at the south. Previous studies based on hydrographic data have ...

    Methodologies for hardware implementation of reservoir computing systems 

    Alomar Barceló, Miquel Lleó (Date of defense: 2017-09-11)

    [cat]Inspirades en la forma en què el cervell processa la informació, les xarxes neuronals artificials (XNA) es crearen amb l’objectiu de reproduir habilitats humanes en tasques que són difícils de resoldre mitjançant la ...

    Nonequilibrium Statistical Physics in Ecology: Vegetation Patterns, Animal Mobility and Temporal Fluctuations 

    Martínez García, Ricardo (Date of defense: 2014-06-25)

    Esta tesis doctoral se centra en la aplicación de la física estadística del no equilibrio al estudio de problemas ecológicos de diferente naturaleza. En primer lugar se desarrollan modelos teóricos para explicar la formación ...

    Numerical study of intense cyclogenesis events in the Mediterranean basin 

    Fita Borrell, Lluis (Date of defense: 2008-05-23)

    S'han estudiat diverses ciclogènesis mediterrànies mitjançant el model atmosfèric MM5,<br/>la inversió de vorticitat potencial per peces i la tècnica de la separació de factors. Els<br/>resultats mostren com a agents per ...

    Outflow of Weddell sea waters into the Scotia Sea through the western sector of the South Scotia Ridge 

    Palmer García, Margarita (Date of defense: 2012-12-14)

    This work compiles the results of the analysis of hydrographical data collected in January 2008 over the western sector of the South Scotia Ridge (SSR). The cruise was carried out on board R/V Hespérides in the framework ...

    Photonic systems with multiple delay times: synchronization, square-ware switching and state-dependent delay 

    Martínez Llinàs, Jade (Date of defense: 2016-11-15)

    Aquesta tesi doctoral se centra en l’estudi teòric i numèric de sistemes fotònics amb retroacció i múltiples línies de retard, en el límit en el que els temps de retard són molt més grans que les escales de temps ...

    Physical and economic impacts due to sea level changes and wind-waves around the Balearic Islands 

    Rodríguez Enríquez, Alejandra (Date of defense: 2019-11-29)

    [eng] This thesis investigates and quantifies the impacts caused by climate change in the coasts of Balearic Islands (western Mediterranean Sea) from both a physical and an economic perspective. Two physical mechanisms ...

    Reservoir computing based on delay-dynamical systems 

    Appeltant, Lennert (Date of defense: 2012-05-22)

    Today, except for mathematical operations, our brain functions much faster and more efficient than any supercomputer. It is precisely this form of information processing in neural networks that inspires researchers to ...

    Shallow Water Remote Sensing Using Sonar Improved with Geostatistics and Stochastic Resonance Data Processing 

    Sousa Sena, André Luis (Date of defense: 2018-02-19)

    [eng] The main objective proposed in this doctoral thesis was focused on the study and development of a solution for the remote sensing of the submarine topographic relief, using for this, inexpensive equipment. Here we ...

    Spatial structures and Information Processing in Nonlinear Optical Cavities 

    Jacobo, Adrian (Date of defense: 2009-04-03)

    Stably stratified atmospheric boundary layer: study trough large-eddy simulations, mesoscale modelling and observations 

    Jiménez Cortés, Maria Antònia (Date of defense: 2005-12-12)

    La capa límit atmosfèrica és l'àrea directament influenciada per la presència de la superfície de la terra i la seva alçada és d'uns centenars de metres a uns pocs quilòmetres. Durant el vespre, el refredament radiatiu ...

    Study of the Generation of Optical Pulses by Mode-Locking in Semiconductor Lasers for Applications in LiDAR Systems 

    Chaparro González, Daniel (Date of defense: 2020-01-17)

    [cat] El present treball constitueix un estudi sobre la generació i control de polsos optics en diferents tipus de lasers de semiconductor i el seu potencial aplicació a sistemes de mesures a distancia. En primer lloc, ...