Now showing items 31-40 of 40

    Periodic time dependent Hamiltonian systems and applications 

    Jorba-Cuscó, Marc (Date of defense: 2019-03-01)

    A dynamical system is one that evolves with time. This definition is so diffuse that seems to be completely useless, however, gives a good insight of the vast range of applicability of this field of Mathematics has. It is ...

    Quantitative equidistribution of Galois orbits of points of small height on the algebraic torus 

    Narváez Clauss, Marta (Date of defense: 2016-06-21)

    El teorema de equidistribución de Bilu establece que, dada una sucesión estricta de puntos en el toro algebraico N-dimensional cuya altura de Weil tiende a cero, las órbitas de Galois de los puntos se equidistribuyen con ...

    Recognizing Action and Activities from Egocentric Images 

    Cartas Ayala, Alejandro (Date of defense: 2020-11-01)

    Egocentric action recognition consists in determining what a wearable camera user is doing from his perspective. Its defining characteristic is that the person himself is only partially visible in the images through his ...

    Restricted Weak Type Extrapolation of Multi-Variable Operators and Related Topics 

    Roure Perdices, Eduard (Date of defense: 2019-12-19)

    A remarkable result in Harmonic Analysis is the so-called Rubio de Francia’s extrapolation theorem. Roughly speaking, it says that if one has an operator T that is bounded on Lp(v), for some p 1 and every weight v in Ap, ...

    Social Signal Processing from Egocentric Photo-Streams 

    Aghaei, Maedeh (Date of defense: 2018-07-13)

    Wearable photo-cameras offer a hands-free way to record images from the camera- wearer perspective of daily experiences as they are lived, without the necessity to interrupt recording due to the device battery or storage ...

    Statistical modelling of avalanche observables: criticality and universality 

    Navas Portella, Víctor (Date of defense: 2020-07-15)

    Complex systems can be understood as an entity composed by a large number of interactive elements whose emergent global behaviour cannot be derived from the local laws characterizing their constituents. The observables ...

    The Logic of Turing Progressions 

    Hermo Reyes, Eduardo (Date of defense: 2019-11-04)

    This dissertation is devoted to developing modal logical tools that can be used in the field of proof theory and ordinal analysis. More precisely, we focus on the relation between strictly positive modal logics and both ...

    Transport phenomena and anomalous diffusion in conservative systems of low dimension 

    Miguel Baños, Narcís (Date of defense: 2016-12-21)

    Apart from this introductory chapter, the contents of the thesis is splitted among four more chapters. Chapters 2, 3 and 4 deal with the planar case, while chapter 5 deals with the 3D volume preserving case. More ...

    Value-aligned norm selection 

    Serramia Amoros, Marc (Date of defense: 2021-09-29)

    Norms have been widely enacted in both human and agent societies to regulate the actions that individuals can perform. However, although legislators may have ethics in mind when establishing norms, moral values are seldom ...

    Weighted restricted weak-type extrapolation on classical Lorentz spaces 

    Baena Miret, Sergi (Date of defense: 2022-03-25)

    An important result in Harmonic Analysis is the extrapolation theorem of Rubio de Francia. In its original version says that if T is a sublinear operator that is bounded in Lp0 pvq, for some p0 ě 1 and every v P Ap , then ...