First, we would like to thank all the chapter contributors, without whom this book would not exist. We would also like to thank the chapter reviewers for their constructive comments. We are grateful to Nora Konopka, Jessica Vakili, and Jennifer Stair of Taylor & Francis, LLC, and S.M. Syed of Techset Composition, for their assistance in the publication of the book. Finally, we would like to give special thanks to our families for their patience and support while we worked on the book.