This 3 sentence summary dedicates the research to the author's parents who have been a constant source of inspiration and have given the drive and discipline to tackle tasks enthusiastically and with determination. Without their love and support this project would not have been possible.

1. iii
DEDICATION
This research is lovingly dedicated to our respective parents, Aurelio and Gleceria Balili,
Felipe Sr. and Guillerma Buhat and Nelma Jutba, Emelita Magsayo who have been
our constant source of inspiration. They have given us the drive
and discipline to tackle an task with enthusiast and
determination. Without their love and
support this project would
not have been made
possible.