Now showing items 1-20 of 140
Martínez Barona, Berenice (Date of defense: 2020-09-14)
The main subject of this PhD thesis is the study of (1,=l)-identifying codes in digraphs. The results presented in this work are divided into three parts. The first one focusses on the structural properties of digraphs ...
Seoane Chouciño, Marcos (Date of defense: 2020-07-15)
Magnetic Resonance Imaging (MRI) scanners have become an essential tool in the medical industry due to their ability to produce high resolution images of the human body. To generate an image of the body, MRI scanners combine ...
Um, Laurence Emilie (Date of defense: 2015-05-25)
Information is such a valuable good of our time. Given that the transmission of information has always been subject to precision problems, knowing the obstacles existing between the transmitter and the receiver, eventual ...
Barbero Liñán, María (Date of defense: 2008-12-19)
Durant els darrers quaranta anys la geometria diferencial ha estat una eina fonamental per entendre la teoria de control òptim. Habitualment la millor estratègia per resoldre un problema és transformar-lo en un altre ...
Casas Alvero, Eduardo (Date of defense: 1975-12-01)
DE LA TESIS:<br/><br/>El problema objeto de esta memoria tiene su origen en la clásica formula del género para curvas algebraicas planas. Dicha formula expresa el género (efectivo) de una curva algebraica plana en función ...
Karkoulias, Alexandros (Date of defense: 2020-06-17)
Simulations of incompressible flows are performed on a daily basis to solve problems of practical and industrial interest in several fields of engineering, including automotive, aeronautical, mechanical and biomedical ...
Ortega Gelabert, Olga (Date of defense: 2020-12-18)
This thesis presents an efficient methodology to couple Model Order Reduction techniques within the framework of geophysical probabilistic inversion problems. Accurate models of the interaction between Earth inner processes ...
Ibáñez Pinillo, Rubén (Date of defense: 2019-09-02)
Simulation Based Engineering Science (SBES) has brought major improvements in optimization, control and inverse analysis, all leading to a deeper understanding in many processes occuring in the real world. These noticeable ...
Roy, Mallika (Date of defense: 2020-02-12)
This work is based on the family of groups Z^m x F_n, namely free-abelian times free groups, direct products of finitely many copies of Z and a finitely generated free group F_n. These are a special type of right-angled ...
Pérez-Callejo, Elvira (Date of defense: 2023-12-21)
We make progress on two open mathematical problems: the problem of algebraic integrability of polynomial foliations on $\mathbb{C}^2$ and the bounded negativity conjecture. For the first one, we identify $\mathbb{C}^2$ ...
Elgueta Montó, Raimon (Date of defense: 1994-05-25)
In our opinion, it is fair to distinguish two separate branches in the origins of model theory. The first one, the model theory of first-order logic, can be traced back to the pioneering work of L. Lowenheim, T. Skolem, ...
Kedzierska, Anna Magdalena (Date of defense: 2012-03-16)
En aquesta tesi interdisciplinar desenvolupem eines algebraiques per a problemes en filogenètica i genòmica. Per estudiar l'evolució molecular de les espècies sovint s'usen models evolutius estocàstics. L'evolució es ...
Riquelme Faúndez, Edgardo (Date of defense: 2016-02-22)
We study \ell-section algorithms for Jacobian of genus two over finite fields. We provide trisection (division by \ell=3) algorithms for Jacobians of genus 2 curves over finite fields \F_q of odd and even characteristic. ...
Girbau i Badó, Joan (Date of defense: 1971-04-30)
En esta tesis doctoral se desarrollan diferentes propuestas sobre la cohomología de las variedades kählerianas, tomando como origen una variedad kähleriana “W” compacta y de dimensión compleja “n”. La tesis comienza con ...
Roig Martí, Agustí (Date of defense: 1991-11-01)
L'any 1967, D. Quillen introduí la noció de categoria de models, estructura adaptada a l'estudi de l'àlgebra homotòpica. Una estruc¬tura de categoria de models en una categoria donada consisteix en l'elecció de tres classes ...
Gil-Muñoz, Daniel (Date of defense: 2021-07-02)
We develop a method to compute a basis of the associated order in a Hopf Galois structure H of the ring of integers O_L of an extension of number or p-adic fields L/K. We state and prove a necessary and sufficient condition ...
Fiol Mora, Miguel Ángel (Date of defense: 1982-01-01)
En este trabajo se estudia, mediante la Teoría de Grafos, el diseño de redes de interconexión para sistemas distribuidos. Los principales temas tratados son: 1. Se propone una metodología general para la obtención de redes ...
Ruiz Cirera, Albert (Date of defense: 2001-07-02)
Giménez Pradales, José Miguel (Date of defense: 2001-12-14)
El objetivo del trabajo consiste en la generalización y el estudio de modelos y métodos que han mostrado su eficiencia respecto a las soluciones para los juegos cooperativos propuestas por Shapley o por Banzhaf, así como ...
Cascante Dávila, Joaquín Mª (Date of defense: 1960-01-01)
El presente trabajo tuvo su origen durante el transcurso de los estudios monográficos de Doctorado, correspondientes al curso académico 1952-1953 de la Sección de Matemáticas, en que nos fue propuesta en la Asignatura de ...