Now showing items 28492-28511 of 41815
Lopes Moreira de Veiga, Maria Helena (Date of defense: 2004-04-19)
El objetivo de esta tesis es modelar y predecir la volatilidad de las series financieras con modelos de volatilidad en tiempo discreto y continuo.<br/>En mi primer capítulo, intento modelar las principales características ...
Dattila, Federico (Date of defense: 2020-12-09)
La reducció de CO2 és l'únic procés per generar combustibles verds amb un impacte negatiu net en les emissions de CO2. Per tant, el desenvolupament futur de la nostra societat necessita una aplicació industrial d'aquesta ...
Quiroga, Oscar Daniel (Date of defense: 2000-10-27)
Las centrales hidroeléctricas, como sistemas reales, tienen un comportamiento no lineal. Con el objetivo de diseñar controladores para turbinas, fue una práctica normal en el pasado considerar o simplificar estos comportamientos ...
Muela Castro, Jordi (Date of defense: 2018-04-11)
The present thesis is devoted to the development and implementation of mathematical models and numerical methods in order to carry out computational simulations of complex heat and mass transfer phenomena. Several areas ...
Arnal Rus, August (Date of defense: 2021-10-28)
Durant aquests darrers anys, l’interès per la fabricació de sistemes electrònics de baix cost ha anat augmentant degut a l’interès en la sensorització de les ciutats intel·ligents i la indústria 4.0. Han anat apareixent ...
Vilardell Moreno, Sergi (Date of defense: 2023-03-13)
(English) Critical Real-Time Embedded Systems (CRTES) are used in domains like transportation (e.g. avionics, automotive, space, and railway), healthcare, and industrial machinery. This subset of embedded systems requires ...
Endo, Yohei (Date of defense: 2015-06-17)
The conservation of historic structures has been given special attention due to their cultural, social and economic importance. However they often show considerable structural vulnerability and have been seriously damaged ...
Morales Pinzón, Tito (Date of defense: 2012-09-14)
En esta dissertación se desarrolló un modelo para evaluar técnica, económica y ambientalmente sistemas de recogida de agua de lluvia para aprovechamiento doméstico urbano. Se analizaron diferentes tipologías de vivienda ...
Del Río Álamos, Cristóbal (Date of defense: 2017-07-14)
La presente Tesis Doctoral presenta una serie de estudios centrados en los efectos de la manipulación neonatal temprana (NH, “neonatal handling”) sobre respuestas de ansiedad/estrés y atencionales-cognitivas. Todos los ...
Roldán Martínez, Alberto (Date of defense: 2010-09-27)
En aquesta tesi ens centrem en les estructures d'or i la seva activitat catalítica. La tesi discuteix la producció d'epòxid de propè sobre les superfícies d'or, el mecanisme de formació de sistemes monodimensionals de gran ...
Guisasola i Canudas, Albert (Date of defense: 2005-09-30)
Martorell Aleman, Òscar (Date of defense: 2014-03-25)
During last decades many researchers have tried to elucidate the different causes of tumour initiation and progression. For this purpose, multiple animal models have been developed to understand the cellular and molecular ...
Carreras Parera, Núria (Date of defense: 2012-07-03)
Mathematical drug release modelling of biodegradable polymeric systems by microencapsulation technology in textiles has not progressed much yet, because it is generally too complex. The release of a therapeutic agent from ...
Dornelles, Leonardo dalla Porta (Date of defense: 2022-10-07)
The brain, a natural adaptive system, can generate a rich dynamic repertoire of spontaneous activity even in the absence of stimulation. The spatiotemporal pattern of this spontaneous activity is determined by the brain ...
Ortiga Guillén, Jordi (Date of defense: 2010-07-01)
The optimal design and operation of an energy supply system is very important for the matching of the energy production and consumption especially in the residential-tertiary sector characterized by an energy demand with ...
Matas Casado, Gerard (Date of defense: 2020-11-04)
The fragmentation process in rockfalls is a complex phenomenon that is not well understood and only a few rockfall simulation models consider it explicitly. Fragmentation significantly affects the evaluation of the hazard ...
Canals Casals, Lluc (Date of defense: 2016-03-30)
Electric vehicles are, slowly but steadily, entering into the automotive market. The slow entry is caused, basically, by the high cost of their batteries. Additionally, electric vehicle batteries are considered not useful ...
Núñez Pineda, Montse (Date of defense: 2011-06-16)
Soil and freshwater are two absolutely essential resources for ecosystems and humanity. Agriculture depends very much on these resources, and so, without their correct management, farmland practices can trigger many adverse ...
Cuko, Andy (Date of defense: 2018-09-24)
Properties of nanomaterials are known to be size dependent and generally are very different from those of the corresponding bulk. Such behaviour, which is strongly system and structure dependent, allows one to tune material’s ...
Castell-Queralt, Josep (Date of defense: 2023-03-31)
Aquesta tesi està dedicada a la modelització teòrica de dispositius skyrmiónics, en particular posa un especial èmfasis l’optimització del transport de skyrmions en condicions realistes sense comprometre el rendiment de ...