Departament de Física: Enviaments recents
Ara mostrant els elements 1-20 de 50
Advancements in mesoscale ensemble prediction strategies: Application to Mediterranean high-impact weather
[cat] La predictibilitat d'esdeveniments d'alt impacte a la regi o Mediterr ania ha millorat substancialment al llarg de les darreres d ecades. No obstant aix o, una representaci o precisa d'aspectes dels sistemes convectius ...
Human mobility: data analysis, theory and models
[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 ...
Temporal evolution of MHD waves in solar coronal arcades
[eng] In this thesis we will study vertical oscillations in a potential arcade under the approximation of a zero- plasma, when di erent density pro les are considered. On one hand we will focus on the time-dependent ...
Study on the general applicability of the collector efficiency model to solar process heat collectors
[eng] According to several studies, the installed capacity of solar thermal collectors to provide heat for industrial processes is going to increase significantly during the next decades. The great variety of designs and ...
Gravitacional waves from generic binary black holes: from numerical simulations to observational results
[cat] Aquesta tesi és un recull del treball realitzat en els darrers quatre anys d’investigació enfocats a la producció de simulacions de relativitat numèrica de forats negres binaris en configuracions genèriques, així ...
Waveform modelling of binary black holes in the advanced ligo era
[eng] The focus of this thesis is the development of accurate and computationally efficient waveform models for the description of the signal of non-precessing and precessing blackhole binary systems detected by the ...
Study of the Generation of Optical Pulses by Mode-Locking in Semiconductor Lasers for Applications in LiDAR Systems
[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, ...
Submesoscale dynamics in the western Mediterranean sea
[eng] The transition from mesoscale to submesoscale dynamics is investigated in the western Mediterranean Sea (WMed) using a set of ROMS model simulations. The research is structured in a series of sequential stages ...
Dynamics of posidonia oceanica meadows
[cat] Aquesta tesi conté l’estudi de la dinàmica de patrons de vegetació a les praderes de Posidonia oceanica. El primer capítol presenta diferents casos de formació de patrons de vegetació a diferents ecosistemes, les ...
Physical and economic impacts due to sea level changes and wind-waves around the Balearic Islands
[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 ...
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 ...
