Departament de Física: Enviaments recents
Ara mostrant els elements 21-40 de 51
Complex dynamics in photonic delay systems: a story of consistency and unpredictability
- Introducció Photonic systems are powerful test-beds for the investigation of complex dynamics emerging from delays in feedback or coupling. The aim of this thesis was to study two relevant properties of photonic delay ...
Complex dynamics of delay-coupled semiconductor lasers: fundamentals and applications
Introduction: The present thesis is devoted to the study of semiconductor lasers subject to delayed optical feedback and coupling. The complex spectral and dynamical properties of these systems have been investigated ...
Impact of large-scale atmospheric variability on sea level and wave climate
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 ...
MEDICANES: meteorological environments and risk assessment in the present and future climate
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
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.
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 ...
Synchronization and application of delay-coupled semiconductor lasers
The work in this thesis is focused on the complex dynamics of semiconductor laser (SL) devices which receive time-delayed feedback from an external cavity or are delay-coupled with a second semiconductor laser. We ...
Nonequilibrium Statistical Physics in Ecology: Vegetation Patterns, Animal Mobility and Temporal Fluctuations
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 ...
Anticipated synchronization in neuronal circuits
Anticipated Synchronization (AS) is a form of synchronization that occurs when a unidirectional influence is transmitted from an emitter to a receiver, but the receiver system leads the emitter in time. This counterintuitive ...
Complex networks approach to modeling online social systems. The emergence of computational social science
This thesis is devoted to quantitative description, analysis, and modeling of complex social systems in the form of online social networks. Statistical patterns of the systems under study are unveiled and interpreted using ...
An advanced Framework for efficient IC optimization based on analytical models engine
En base als reptes sorgits a conseqüència de l'escalat de la tecnologia, la present tesis desenvolupa i analitza un conjunt d'eines orientades a avaluar la sensibilitat a la propagació d'esdeveniments SET en circuits ...
Outflow of Weddell sea waters into the Scotia Sea through the western sector of the South Scotia Ridge
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 ...
Time and Spatial Damping of Magnetohydrodynamic Waves in Partially Ionised Prominence Plasmas
Inici de l’estudi de l’efecte de les col•lisions entre ions i neutres en l’esmorteïment d’ones magnetohidrodinàmiques. Es considera un plasma parcialment ionitzat, infinit i homogeni, i s’analitza l’esmorteïment temporal ...
Fluctuations in interacting-particle systems: a theoretical study
La presente tesis doctoral, se centra en el desarrollo de métodos matemáticos para el estudio de procesos estocásticos de interés en física y otras ciencias naturales. Fundamentalmente se consideran sistemas de particulas ...
Estudio de eventos transitorios inducidos por radiación en memorias SRAM nanométricas
Los efectos de la radiación en circuitos electrónicos se conocen desde los comienzos de la carrera espacial en los años 60, pues fuera de la atmósfera terrestre se está expuesto a niveles más altos de radiación que en la ...
Reservoir computing based on delay-dynamical systems
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 ...
Dynamics and Synchronization of Motifs of Neuronal Populations in the Presence of Delayed Interactions
Aquesta tesi estudia les propietats de sincronització de motius de neurones o poblacions de neurones acoblats amb retard. S'ha trobat que dos elements indirectament connectats de forma bidireccional a través d'un mediador ...
Implementación en hardware de sistemas de alta fiabilidad basados en metodologías estocásticas
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 ...
Comportamiento Óptico y Térmico de un Concentrador Solar Lineal con reflector estacionario y Foco Móvil
El concentrador solar Fixed Mirror Solar Concentrator (FMSC) apareció en los años 70 con la finalidad de reducir costes en la producción de energía termoeléctrica. Este diseño consiste en un concentrador de reflector ...
Design of ensemble prediction systems based on potential vorticity perturbations and multiphysics. Test for western Mediterranean heavy precipitation events
L'objectiu principal d'aquesta tesi és millorar l'actual capacitat de predicció de fenòmens meteorològics de pluja intensa potencialment perillosos a la Mediterrània occidental. Es desenvolupen i verifiquen tres sistemes ...
