Now showing items 68-87 of 97
Braddell, Róisín (Date of defense: 2021-02-17)
In this thesis, we study the application of symplectic geometry, regular and singular, to symplectic dynamical systems.We start with a motivating case: the relation between symplectic foliations and global transverse ...
Calvo Schwarzwälder, Marc (Date of defense: 2019-07-12)
For 200 years, Fourier’s law has been used to describe heat transfer with excellent results. However, as technology advances, more and more situations arise where heat conduction is not well described by the classical ...
Villanueva Castelltort, Jordi (Date of defense: 1997-03-10)
L'objectiu bàsic d'aquesta tesi és l'estudi de la dinàmica a l'entorn de tors de dimensió baixa de sistemes hamiltonians analítics. Per aquest estudi l'eina fonamental és l'ús de formes normals al voltant d'aquests ...
Paita, Fabrizio (Date of defense: 2017-09-04)
In this thesis we consider the problem of developing distributed control strategies for spacecraft formation flying. In light of possible interferometric applications, the study is conducted in two different contexts: ...
Jané Campos, Raimon (Date of defense: 1989-07-10)
L'estudi del senyal electrocardiogràfic (ECG) obtingut mitjançant elèctrodes de superfície és una prova mèdica freqüent que té una gran significació en el diagnòstic de l'activitat cardíaca. <br/>Des de la incorporació ...
Sánchez Casas, José Pablo (Date of defense: 2002-11-28)
In this work we try to analyse the dynamics of the Navier-Stokes equations in a problem without domain complexities as is the case of the plane Poiseuille flow. The Poiseuille problem is described as the flow of a viscous ...
Sevilla Cárdenas, Rubén (Date of defense: 2009-07-24)
Aquesta tesi proposa una millora del clàssic mètode dels elements finits (finite element method, FEM) per a un tractament eficient de dominis amb contorns corbs: el denominat NURBS-enhanced finite element method (NEFEM). ...
Lázaro Ochoa, José Tomás (Date of defense: 2003-10-23)
És difícil dibuixar una frontera, dins la Teoria de Sistemas Dinàmics, entre lleis de conservació i simetries doncs, sovint, les seves característiques es confonen. Un clar exemple d'aquest fenómen el constitueixen els ...
Diego, Víctor (Date of defense: 2017-11-24)
In this work we present the study we did in Graph Theory. In the firsts chapteres of the tesis we study the pieces of information that can be obtained from a graph: the spectrum of the adjacency matrix, the preintersection ...
Pacha Andújar, Juan Ramón (Date of defense: 2002-10-21)
Aquest treball es situa dintre del marc dels sistemes dinàmics hamiltonians de tres graus de llibertat. Allà considerem famílies d'òrbites periòdiques amb una transició estable-complex inestable: sigui L el paràmetre que ...
Pérez Cervera, Alberto (Date of defense: 2019-04-04)
In this Thesis we consider problems concerning brain oscillations generated across the interaction between excitatory (E) and inhibitory (I) cells. We explore how two neuronal groups with underlying oscillatory activity ...
Hernández Barrios, Víctor (Date of defense: 2022-04-19)
In this work we generalize the construction of p-adic anticyclotomic L-functions associated to an elliptic curve E/F and a quadratic extension K/F, by defining a measure µ_f^p attached to K/F and an automorphic form. In ...
Olivares Mañas, Edgar (Date of defense: 2018-11-09)
This thesis is focused on particle transport in the context of high computing performance (HPC) in its widest range, from the numerical modeling to the physics involved, including its parallelization and post-process. The ...
Roca Navarro, Xevi (Date of defense: 2009-07-23)
Esta tesis versa sobre el desarrollo de las tecnologías para la generación de mallas de hexaedros. El proceso de generar una malla de hexaedros no es automático y su generación requiere varias horas te trabajo de un ingeniero ...
Wötzel, Maximilian (Date of defense: 2022-01-26)
The results in this thesis concern extremal and probabilistic topics in number theoretic settings. We prove sufficient conditions on when certain types of integer solutions to linear systems of equations in binomial ...
Verdera i Tomas, Ernest (Date of defense: 1990-01-01)
Aquest treball vol ser una aportació positiva a la teoria general del Manteniment Industrial. <br/>La teoria del Manteniment Industrial és un camp de la coneixença tècnica que encara ha de ser desbrossat d'influències que ...
Mohan, Prahu (Date of defense: 2019-07-03)
Discrete Mathematics, and in particular Graph Theory, has gained a lot of popularity during the last 7 decades. Among the many branches in Graph Theory, graph labelings has experimented a fast development, in particular ...
Dios Otín, Federico (Date of defense: 1992-03-05)
El trabajo se enmarca dentro del estudio de ciertas propiedades ópticas con vistas a su inclusión en el diseño de dispositivos de conmutación de señales ópticas. En particular se ha prestado atención a los medios que exhiben ...
Felipe Navarro, Juan Carlos (Date of defense: 2021-07-14)
The thesis is devoted to the analysis of elliptic PDEs and related problems. It is mainly focused on the study of qualitative and regularity properties of solutions to integro-differential equations. The study of such ...
Pérez Mansilla, Sonia (Date of defense: 2001-02-02)
Un digrafo o grafo dirigido se dice que es k-arco transitivo si tiene grupo de automorfismos que actúa transitivamente en el conjunto de k-arcos. Para un entero positivo k, un k-arco de un digrafo es una secuencia ...