Now showing items 41-44 of 44
Ripoll i Missé, Jordi (Date of defense: 2005-10-05)
In this Thesis we address the study of some non-linear evolution equations (e.g. pde's) modelling the dynamics of sexually-reproducing structured populations, with special emphasis on biological evolution driven by natural ...
Gutiérrez i Serrés, Pere (Date of defense: 1995-06-02)
La memòria recull contribucions a diversos aspectes del problema de l'estabilitat en sistemes hamiltonians quasi-integrables. Aquests aspectes inclouen resultats d'estabilitat efectiva, que comporten el confinament de ...
Jorba Jorba, Lambert (Date of defense: 2003-05-26)
El sistema de les marques s'enquadra dins del camp de l'anàlisi intervalar modal. <br/>En aquest context la tesi aporta un estudi de les operacions lineals, de la seva semàntica i sobretot de la seva operativitat quan les ...
Mondelo González, José María (Date of defense: 2001-07-13)
This works has been organized in three parts. The first (Chapter 1 to 5) is dedicated to the development and study of a procedure for the accurate computation of frequencies, as well ans the related Fourier coefficients, ...