I thank my advisor Prof. Dr. Arnaldo Gammal for his support and effort in helping me to reach the required level to be able to perform physics simulations and improve my tools, and for his hospitality when I joined the group. I thank the Ph.D. student former colleague Alex Andriati for the cooperation in our common works, for helping me to learn the main research branches of our group, and share his ideas. I also recognize the cooperation and lessons from Prof. Dr. Lauro Tomio when we worked together. I also acknowledge the valuable discussions, cooperation, and pretty good relationship with all my current colleagues of the research group,