Dr. Gui started his career in 1969 and has served as contractor chief scheduler, program manager, construction manager, forensic scheduler, and expert witness. He has pioneered innovations in project management throughout his 50-year career. He holds four US patents and has numerous patents pending on his graphical path method. Dr. Gui pursued MS studies at Vanderbilt University in 1966-1967 and obtained his PhD in civil engineering from Michigan in 1972. From 1973-1989, Dr. Gui taught two graduate courses in network-based project scheduling in the College of Engineering, Civil & Environmental Engineering, at Michigan.