support my study. I would like also to thank due to all the corresponding experts for
their responses to distributed questionnaires, discussion supports and their sharing
knowledge and experiences between the field surveys that strongly helped me to
improve my research. My office colleagues in Thailand; Institute of Scientific and
Technological Research (TISTR) also provided me a lot of help related to this study.
I must also acknowledge my SIS members, Doung Dang Khoi, Mizutani Chiaki,
Gismondi Matteo, Hashimoto Misao and Konwani Godwn Munthali for their kind
comments, suggestion and guidance of my research and paper. It is also thanks to other
SIS members for appreciable helps in daily communication and timely information
service. At this point, I would also like to memorize my pleasant times that I had with
my SIS members during the course in Japan. My appreciation is extended to
Mr.Gongjuk Jaidee, a good friend of mine for his valuable support in GIS work.
Finally, I would like to consider here the continuous encouragement and moral support I
received from every member of my family throughout my studies and appreciate to my
parents who have supported me in everything I have undertaken and whose love has
accompanied me throughout my studies. I would also like to thank my older brother for
their concrete help, my closed friends in Japan, inspired and encouraged me when I felt
uninspired and for this they have earned my deepest gratitude.
Khwanruthai BUNRUAMKAEW