Departament de Física: Recent submissions
Now showing items 11-30 of 50
Active shear strengthening of reinforced concrete beams using Ni-Ti-Nb shape memory alloys
[eng] Shear strengthening of existing structures is often required as shear failures in reinforced concrete (RC) members are associated with brittle collapses, it being essential to avoid this kind of failure. This thesis ...
Shallow Water Remote Sensing Using Sonar Improved with Geostatistics and Stochastic Resonance Data Processing
[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 ...
Hierarchical data-driven modelling of binary black hole mergers
[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 ...
Methodologies for hardware implementation of reservoir computing systems
[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 ...
Desarrollo y aceleración hardware de metodologías de descripción y comparación de compuestos orgánicos
Introducción El acelerado ritmo al que se genera y crece la información en la sociedad actual y la posible llegada de la tecnología de transistor a sus límites de tamaño exige la puesta en marcha de soluciones para el ...
High-frequency waves and instabilities in multi-fluid partially ionized solar plasmas
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 ...
Photonic systems with multiple delay times: synchronization, square-ware switching and state-dependent delay
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 ...
Individual-based models of collective dynamics in socio-economic systems
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 ...
Towards a gauge polyvalent numerical relativity code: numerical methods, boundary conditions and di erent formulations
La present tesi doctoral versa sobre la resolucio numèrica de les equacions d'Einstein de la Teoria de la Relativitat. Es presenta: una nova familia de mètodes computacionals amb variació total acotada i d'implementació ...
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 ...
