vi
Our sincere appreciation goes to the chapter contributors for their great contributions, patience, and cooperation during the editorial process. Their hard work and
dedication have significantly contributed to the completion of this book. Our special
thanks go to our families for their support and patience during the whole process. To
the management of Springer, we will remain thankful for your guidance and support. To the readers, we hope you will find this book helpful and informative. May
our efforts in coming up with this book shed light in your never-ending quest for
knowledge as we welcome your views.
Port Harcourt, Rivers State, Nigeria
Chukwuebuka Egbuna
Davao City, Philippines
Genevieve Dable-Tupas
Preface