Andrade Arvizu, Jacob Antonio (Date of defense: 2021-09-10)
The main subject of this work focuses on the development of advanced technological strategies for bandgap profile engineering on Earth-abundant and eco-friendly kesterite thin film solar cells which ...
Lledó Ponsatí, Llorenç (Date of defense: 2020-12-09)
In order to mitigate the climate change effects, the world is undergoing an energy transition from polluting sources towards renewable energies. This transition is turning the electricity system more ...
Molina, Alfred (Date of defense: 1976-01-14)
En este trabajo se evalúan cuidadosamente los elementos de matriz nucleares reduciendo muy considerablemente la imprecisión en los resultados finales. Por otra parte por primera vez se consideran posibles ...
Petrova, Desislava Bozhidarova (Date of defense: 2017-09-13)
El Niño Southern Oscillation arises in the tropical Pacific due to coupled atmosphere-ocean interactions. The nature of the dynamical system of the atmosphere is chaotic and its predictability is sensitive ...
Juvert Sández, Joan (Date of defense: 2014-07-04)
We have characterized electroluminescent devices based on silicon rich oxide and/or silicon rich nitride. We have discussed the photoluminescence and structural characterization of the active layers and ...
Román-Roy, Narciso (Date of defense: 1986-01-01)
Aparte del atractivo meramente matemático, el interés físico del estudio de los sistemas dinámicos con ligaduras reside en un hecho fundamental: sólo las teorías físicas cuya dinámica esté descrita por ...
Samitier i Martí, Josep (Date of defense: 1986-06-25)
Al principio de los años 60, aparecieron los primeros transistores FET en Arseniuro de Galio. En el instante en que el silicio se imponía de forma definitiva al germanio, la aparición de este nuevo ...
Soto Riera, Joan (Date of defense: 1985-12-11)
Aquesta memòria està estructurada en set capítols i vuit apèndixs. Dels capítols, els dos primers es poden considerar introducció, mentre que la resta són ja treball original. El capítol I està dedicat ...
Hoffmann Salvaña, Xavier Roderic (Date of defense: 2021-09-21)
Epidemic modeling has proven to be an essential framework for the study of contagion phenomena in biological, social, and technical systems. Albeit epidemic models have evolved into powerful predictive ...
Daragmeh, Allan (Date of defense: 2017-07-21)
Nowadays, our modern society huge challenges related to energy, savings as well as energy management, to improve and extend the standard of living to a growin population over 7000 million people, and ...