Experimental study and numerical modelling of soil-roots hydro-mechanical interactions 

    Fraccica, Alessandro (Fecha de defensa: 2019-12-09)

    The thesis is aimed at characterising the multi-scale and hydro-mechanical behaviour of lightly compacted silty sand penetrated by a turf-grass (Cynodon Dactilon). The study will allow better assessing the impact of ...

    Experimental study of feedback-induced dynamics in semiconductor lasers : from symbolic analysis to subwavelength position sensing 

    Aragoneses Aguado, Andrés (Fecha de defensa: 2014-06-18)

    The aim of this thesis is the study of the dynamics induced by optical feedback in semiconductor lasers. This study aims, on the one hand, to improve our knowledge of stocahstic complex systems, and on the other hand, to ...

    Experimental study of speckle generated by semiconductor light sources: application in double pass imaging 

    Halpaap, Donatus (Fecha de defensa: 2019-12-09)

    With the double pass (DP) technique it is possible to quantify the optical quality of a patient's eye by measuring its point spread function. Due to the low reflectivity of the retina a high-intensity, point-like illumination ...

    Experimental study on microstructure and structural behaviour of recycled aggregate concrete 

    Etxeberria Larrañaga, Miren (Fecha de defensa: 2004-06-18)

    The use of recycled aggregates in concrete opens a whole new range of possibilities in the reuse of materials in the building industry. This could be an important breakthrough for our society in our endeavours towards ...

    Experimental tools for quantum networking operations with single photons and sinlge ions 

    Huwer, Jan Henning (Fecha de defensa: 2014-01-29)

    One promising approach for future quantum networks is the combination of strings of trapped ions as quantum-information processors with entangled photon pairs produced by spontaneous parametric down conversion (SPDC) to ...

    Experimental validation of optimal real-time energy management system for microgrids 

    Marzband, Mousa (Fecha de defensa: 2014-01-20)

    Nowadays, power production, reliability, quality, efficiency and penetration of renewable energy sources are amongst the most important topics in the power systems analysis. The need to obtain optimal power management and ...

    Experimental velocity profile distribution characterization of mountain rivers 

    Marin-Esteve, Blanca (Fecha de defensa: 2023-05-18)

    (English) The aim of this thesis is to improve our understanding of the behaviour of mountain rivers and to predict their morphological functioning under conditions of low relative submergence. Mountain rivers have received ...

    Experiments de flux i sedimentació de llim fi 

    Capapé Miralles, Sergi (Fecha de defensa: 2017-05-18)

    Research on fine sediment transport (silt and clay) is less advanced than research on sand and gravel movement. Nevertheless, fine sediment can be the predominant fraction of the suspended load in some rivers, and its ...

    Explicit integration of some integrable systems of classical mechanics 

    Basak Gancheva, Inna (Fecha de defensa: 2011-11-28)

    The main objective of the thesis is the analytical and geometrical study of several integrable finite-dimentional dynamical systems of classical mechanics, which are closely related, namely: - the classical generalization ...

    Exploiting asymmetric multi-core systems with flexible system software 

    Chronaki, Kallia (Fecha de defensa: 2018-11-21)

    Asymmetric multi-cores (AMCs) are a successful architectural solution for both mobile devices and supercomputers. These architectures combine different types of processing cores designed at different performance and power ...

    Exploiting cognition for energy and spectrum efficient wireless networks 

    Mesodiakaki, Agapi (Fecha de defensa: 2015-11-09)

    The main objective of this thesis is to propose and evaluate medium access layer algorithms, that will exploit different types of cognition to provide energy and spectrum efficiency enhancement. In particular, two main ...

    Exploiting data locality in cache-coherent NUMA systems 

    Sánchez Barrera, Isaac (Fecha de defensa: 2022-04-06)

    The end of Dennard scaling has caused a stagnation of the clock frequency in computers.To overcome this issue, in the last two decades vendors have been integrating larger numbers of processing elements in the systems, ...

    Exploiting distributional semantics for content-based and context-aware recommendation 

    Codina Busquet, Victor (Fecha de defensa: 2014-06-13)

    During the last decade, the use of recommender systems has been increasingly growing to the point that, nowadays, the success of many well-known services depends on these technologies. Recommenders Systems help people to ...

    Exploiting frame coherence in real-time rendering for energy-efficient GPUs 

    Anglada Sánchez, Martí (Fecha de defensa: 2020-06-09)

    The computation capabilities of mobile GPUs have greatly evolved in the last generations, allowing real-time rendering of realistic scenes. However, the desire for processing complex environments clashes with the ...

    Exploiting nonlinearity and noise in optical tweezers and semiconductor lasers : from resonant damping to stochastic logic gates and extreme pulses 

    Perrone, Sandro (Fecha de defensa: 2014-02-07)

    This thesis is focused on the study of stochastic and nonlinear dynamics in optical systems. First, we study experimentally the dynamics of a Brownian nanometer particle in an optical trap subjected to an external forcing. ...

    Exploiting optical signal analysis for autonomous communications 

    Sequeira, Diogo Gonçalo (Fecha de defensa: 2022-10-31)

    (English) Optical communications have been extensively investigated and enhanced in the last decades. Nowadays, they are responsible to transport all the data traffic generated around the world, from access to the core ...

    Exploiting spatial modulation and analog network coding for the design of energy-efficient wireless networks 

    Ntontin, Konstantinos (Fecha de defensa: 2015-11-03)

    As the data rate demands of the cellular users increase, together with their number, it is expected that unprecedented capacity demands should be met in wireless networks in the forthcoming years. However, the energy ...

    Exploiting task-based programming models for resilience 

    Jaulmes, Luc (Fecha de defensa: 2019-06-21)

    Hardware errors become more common as silicon technologies shrink and become more vulnerable, especially in memory cells, which are the most exposed to errors. Permanent and intermittent faults are caused by manufacturing ...

    Exploiting the multiscale synergy among ocean variables : application to the improvement of remote sensing salinity maps 

    Umbert Ceresuela, Marta (Fecha de defensa: 2015-10-23)

    Les imatges de teledetecció de la superfície oceànica proporcionen una vista sinòptica de la complexa geometria de la circulació oceànica, dominada per la variabilitat de mesoescala. Estructures com filaments i vòrtex són ...

    Exploiting word embeddings for modeling bilexical relations 

    Madhyastha, Pranava Swaroop (Fecha de defensa: 2017-07-25)

    There has been an exponential surge of text data in the recent years. As a consequence, unsupervised methods that make use of this data have been steadily growing in the field of natural language processing (NLP). Word ...