Ara mostrant els elements 1-10 de 142
de la Lama Zubiran, Paula (Data de defensa: 2021-01-13)
Two-stage stochastic optimization models give rise to very large linear problems (LP). Several approaches have been devised for efficiently solving them, among which are interior-point methods (IPM). ...
Planas Bahí, Arnau (Data de defensa: 2020-09-30)
This thesis explores classification and perturbation problems for group actions on a class of Poisson manifolds called $b^m$-Poisson manifolds. $b^m$-Poisson manifolds are manifolds which are symplectic ...
Vila Pérez, Jordi (Data de defensa: 2021-02-10)
The aerospace community is challenged as of today for being able to manage accurate overnight computational fluid dynamics (CFD) simulations of compressible flow problems. Well-established CFD solvers ...
Delgado Rodríguez, Jordi (Data de defensa: 2017-09-15)
In this work we use geometric techniques in order to study certain natural extensions of free groups, and solve several algorithmic problems on them. To this end, we consider the family of free-abelian ...
Massana Hugas, Immaculada (Data de defensa: 2006-10-31)
Després d'un capítol d'introducció (capítol 2) on es definieixen i s'expliquen les característiques i els fenòmens més importants dels sistemes dinàmics, aquest treball el podríem dividir bàsicament en ...
Ribera Ponsa, Helena (Data de defensa: 2018-03-16)
In this thesis we study diffusion processes of nanoparticle evolution and develop appropriate models with the aim of being able to optimise their functions according to the needs of industry. Two distinct ...
Domènech i Blàzquez, Margarita (Data de defensa: 2020-11-24)
The first part of this thesis focuses on cooperative games and specifically on the study of semivalues and probabilistic values. Each semivalue, as a solution concept defined on cooperative games with ...
Rodríguez Pereira, Jessica (Data de defensa: 2018-01-09)
Some of the most common decisions to be taken within a logistic systems at an operational level are related to the design of the vehicle routes. Vehicle Routing Problems and Arc Routing Problems are ...
Baena Mirabete, Daniel (Data de defensa: 2017-07-03)
One of the main purposes of National Statistical Agencies (NSAs) is to provide citizens or researchers with a large amount of trustful and high quality statistical information. NSAs must guarantee that ...
Costa Miranda, Núria (Data de defensa: 2021-04-14)
This PhD thesis focuses on lattice-based cryptography and how to apply it to build post-quantum online voting systems. It is the result of the research done by the author at Scytl in close collaboration ...