Acknowledgement
I would like to express my deep appreciation to my thesis committee, Dr. Pisan Suriyamongkol, Dr. Suchart Prasith-rathsint, and Archarn Visarn Angsakul, for their guidance, review, suggestions, kindness, valuable time, criticisms, and comments throughout my graduate study.
I am most grateful to Professor Dr. Sombat Thamrongthanyawong for his encouragement from the very beginning of the doctoral study, and to Professor Dr. Suchart Prasith-rathsint for guiding me advanced statistics with his strong experience.
My thanks go to Assistant Professor Dr. Manvipa Indradat, my classmate in NIDA, for her assistance introducing me to state agencies, to Ms. Pankhae Chunnanond, Director of Data Processing Department, Port Authority of Thailand, and to Khun Piyapat Vongvanich, Port Authority of Thailand, for their kind assistance and information.
My sincerest appreciation goes to Ms. Kanchana Wongthanasopon, Business Analyst, TIFFA EDI Services Co., Ltd., and Ms. Pranee Chandracherd, Cargo Services Information Systems Division Manager, Thai Airways International Plc., for her solid information as a thesis reference.
I would also like to thank all trading partners, VAN, and state agency representatives who patiently participated in the questionnaires and interviews.
A special note of thanks goes to Ms. Bu-nga Kornvinai, Information Technology Services Director, Thai Airways International Plc., Ms. Tharatip Sirisuay, Corporate Resources & Operations Information Systems Department Manager, Thai Airways International Plc. and Ms. Kanya Songsermmongkol, Information Technology Training Division Manager, Thai Airways International Plc. for their understanding.
My deep gratitude goes to Ms. Sujit Boonkasemsanti, Chief Accountant, Merck Ltd., Ms. Pensiri Wangdan, Bank of Thailand, Capt. Supachoke Suthichoti, Director, Office of EVP Operations, Ms. Mirada Kijkusol, Vice President, Treasury and Bond Trading Department, Siam Commercial Securities Company, Ms.
Russameekhae Chotiphan, Distributed System Service Manager, IBM Thailand, and Ms. Jammaree Kaewmeesaeng, Executive Secretary to Managing Director, Ford Leasing Co., Ltd., for their kind assistance in many ways.
My thanks go to Ms. Benjawan Nimmanonda, Administrative Assistant, Information Technology Services Department, Ms. Kornkanok Wongpanicha, Senior Programmer Analyst, IT Training Division, Ms. Darunrat Wiboonsin, Programmer Analyst II, IT Training Division, Ms Buranee Putprasert, Supervisor, Information Technology Services Department, Ms. Lakkana Rangkasiri, Stock Exchange of Thailand, Ms. Prangthong, Senior Programmer Analyst, Crew Management Information Systems Division, and Ms. Proadpran Pitsatorn, Department of Computer Engineering, Chulalongkorn University, for their initial editing.
Finally, my love goes to my family for helping me accomplish this thesis. Thanks to my father, RADM. Jetana Maneenak RTN., my mother, Ms. Vanee Maneenak, Corporate Policy and Planning Director, Thailand Tobacco Monopoly, my sister, Ms. Methaya Maneenak and her friend, Ms. Prisda Petcharatana for being a source of pride to me.