Abstract:The present dissertation is testimony that sometimes the choice of a difficult path can be more enriching and that all the effort will be rewarded by the accomplishment of the defined objectives, reason why it is necessary to express the sincere thanks and gratitude inherent in this process. Firstly, I would like to thank my mentors, Professor Vítor Braga and Professor Eliana Costa e Silva, for all the guidance, constructive criticism, dedication and effort, applied in the various moments to accomplish objecti… Show more
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