Additionally, I would like to thank each one of the chapter authors for their tremendous work to present the most valuable achievements in their specific activity fields, and I really hope the readers will appreciate the high scientific content of any chapter included in this book. My special thanks are directed to Mr. Aleksandar Lazinica for his great kindness to invite me, after a rigorous selection process, to bring my scientific contribution to the publishing of this outstanding volume both as book editor and chapter author. Last but not least, I would like to thank the whole staff of InTech.
