Dr. Oscar Romero Moral

These lines I want to dedicate for giving my thanks to all people without who this thesis would have not beeen possible. I want to thank my thesis advisors, professors Alberto Abello and Oscar Romero, first for believing in me and for giving me the opportunity to work with them on this novel approach, and then for being a great help during my work, with their constant patience, useful advices and suggestions. I am especially grateful to them for encouraging me to think wider about the problems and to delve deeper to find the right and quality solutions. I also thank professor Oscar Romero and Daniel Gonzalez for cooperation and great help during the integration process of the GEM system. My thanks also go to my friends who, during the rough moments, cheered me up and gave me the strength to go on. However, my deepest gratitude I owe to my parents who gave me the chance to even be at this place and who supported me the most through all my life and education. I hope I will give them the reason to be proud of me. My special thanks go to my sister for always being there to encourage me and to make me believe in myself and my work