de la Lama Zubiran, Paula (Date of defense: 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 (Date of defense: 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 (Date of defense: 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 (Date of defense: 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 ...
Ribera Ponsa, Helena (Date of defense: 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 ...
Rodríguez Pereira, Jessica (Date of defense: 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 (Date of defense: 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 (Date of defense: 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 ...
Paipuri, Mahendra (Date of defense: 2018-03-21)
This thesis proposes a coupled continuous and hybridizable discontinuous Galerkin formulation to solve conjugate heat transfer problems. This model is then used to find the thermal response of Glass ...
Bonilla de Toro, Jesús (Date of defense: 2019-12-17)
This thesis covers the development of monotonicity preserving finite element methods for hyperbolic problems. In particular, scalar convection-diffusion and Euler equations are used as model problems ...