Now showing items 21-40 of 44

    The Role and Usage of Libration Point Orbits in the Earth - Moon System 

    Alessi, Elisa Maria (Date of defense: 2010-10-04)

    In this dissertation, we show the effectiveness of the exploitation of the Circular Restricted Three - Body Problem (CR3BP) in the Earth - Moon framework. We study the motion of a massless particle under the gravitational ...

    Spaces of bandlimited functions on compact manifolds 

    Pridhnani, Bharti (Date of defense: 2011-09-09)

    This monograph is structured in four chapters. In Chapter 1, we present the context of our problem and the main results proved in this work. We describe the asymptotic behaviour of the reproducing kernel and the ...

    Connectivity of Julia sets of transcendental meromorphic functions 

    Taixés i Ventosa, Jordi (Date of defense: 2011-09-22)

    Newton's method associated to a complex holomorphic function f is defined by the dynamical system Nf(z) = z – f(z) / f'(z). As a root-finding algorithm, a natural question is to understand the dynamics of Nf about its fixed ...

    Capacitary function spaces and applications 

    Silvestre Albero, María Pilar (Date of defense: 2012-02-08)

    The first part of the thesis is devoted to the analysis on a capacity space, with capacities as substitutes of measures in the study of function spaces. The goal is to extend to the associated function lattices some aspects ...

    Boundedness of the Hilbert Transform on Weighted Lorentz Spaces 

    Agora, Elona (Date of defense: 2012-07-13)

    The main goal of this thesis is to characterize the weak-type (resp. strong-type) boundedness of the Hilbert transform H on weighted Lorentz spaces Λpu(w). The characterization is given in terms of some geometric ...

    Detection and Alignment of Vascular Structures in Intravascular Ultrasound using Pattern Recognition Techniques 

    Alberti, Marina (Date of defense: 2013-02-21)

    In this thesis, several methods for the automatic analysis of Intravascular Ultrasound (IVUS) sequences are presented, aimed at assisting physicians in the diagnosis, the assessment of the intervention and the monitoring ...

    Random zero sets of analytic functions and traces of functions in Fock spaces 

    Buckley, Jeremiah (Date of defense: 2013-06-06)

    Interpolating and sampling sequences in spaces of functions are classical subjects in complex and harmonic analysis. A sequence of points is said to be interpolating if, given any collection of values, we can find a function ...

    Sequential image analysis for computer-aided wireless endoscopy 

    Drozdzal, Michal (Date of defense: 2014-05-16)

    Wireless Capsule Endoscopy (WCE) is a technique for inner-visualization of the entire small intestine and, thus, offers an interesting perspective on intestinal motility. The two major drawbacks of this technique are: 1) ...

    Computation of Normally Hyperbolic Invariant Manifolds 

    Canadell Cano, Marta (Date of defense: 2014-07-04)

    The subject of the theory of Dynamical Systems is the evolution of systems with respect to time. Hence, it has many applications to other areas of science, such as Physics, Biology, Economics, etc. and it also has interactions ...

    Assisted Hybrid Structured 3D Virtual Environments 

    Almajano, Pablo (Date of defense: 2014-10-17)

    The blending of digital technologies, such as artificial intelligence, interactive systems, 3D interfaces and the Internet is enabling new services for users. In particular, Hybrid Structured 3D Virtual Environments (VE) ...

    Generalized Stacked Sequential Learning 

    Puertas i Prats, Eloi (Date of defense: 2014-11-04)

    Over the past few decades, machine learning (ML) algorithms have become a very useful tool in tasks where designing and programming explicit, rule-based algorithms are infeasible. Some examples of applications ...

    Stochastic modelling of cellular populations: Effects of latency and feedback 

    Sánchez Taltavull, Daniel (Date of defense: 2014-12-12)

    L'objectiu principal d'aquesta tesi doctoral és l'estudi de l'efecte de les fluctuacions en poblacions acoblades en sistemes biològics, on cèl·lules en estat latent juguen un paper important. Intentant trobar el significat ...

    Approximate algorithms for decentralized Supply Chain Formation 

    Penya-Alba, Toni (Date of defense: 2014-12-16)

    Supply chain formation involves determining the participants and the exchange of goods within a production network. Today’s companies operate autonomously, making local decisions, and coordinating ...

    From pixels to gestures: learning visual representations for human analysis in color and depth data sequences 

    Hernández-Vela, Antonio (Date of defense: 2015-03-09)

    The visual analysis of humans from images is an important topic of interest due to its relevance to many computer vision applications like pedestrian detection, monitoring and surveillance, human-computer interaction, ...

    On a Family of Degree 4 Blaschke Products 

    Canela Sánchez, Jordi (Date of defense: 2015-03-18)

    This PhD thesis belongs to the area of discrete dynamical systems in the complex plane, i.e. the iteration of analytic functions in one complex variable. Given a rational map f from the Riemann sphere onto itself, we ...

    Optimal Sobolev Embeddings in Spaces with Mixed Norm 

    Clavero, Nadia F. (Date of defense: 2015-03-20)

    Este proyecto hace referencia a estimaciones, en espacios funcionales, que relacionan la norma de una función y la de sus derivadas. Concretamente, nuestro principal objetivo es estudiar las estimaciones clásicas de las ...

    Assisting the training of deep neural networks with applications to computer vision 

    Romero, Adriana (Date of defense: 2015-10-02)

    Deep learning has recently been enjoying an increasing popularity due to its success in solving challenging tasks. In particular, deep learning has proven to be effective in a large variety of computer vision tasks, such ...

    Dynamical transport mechanisms in celestial mechanics and astrodynamics problems 

    Pérez Palau, Daniel (Date of defense: 2015-11-30)

    L’objectiu d’aquesta tesi és afegir una petita fulla a l’arbre del coneixement. En particular a la branca del sistemes dinàmics. La teoria de sistemes dinàmics és la branca de les matemàtiques que estudia l’evolució del ...

    The Parametrisation method for invariant manifolds of tori in Skew-product lattices and an entire transcendental family with a persistent Siegel disk 

    Berenguel Montoro, Rubén (Date of defense: 2016-02-02)

    In this thesis we consider two different problems in the theory of dynamical systems. Dynamical systems cover a wide array of subjects, from finite dimensional to infinite dimensional, from analytic to statistical viewpoints ...

    On-line norm synthesis for open Multi-Agent systems 

    Morales Matamoros, Javier (Date of defense: 2016-02-02)

    Multi Agent Systems (MAS) are computerised systems composed of autonomous software agents that interact to solve complex problems. Within a MAS, agents require some mechanism to coordinate their activities. In the MAS ...