摘要: The first goal of this book is to utilize the case study development PACE (Patient Care Expert) system describe and explain fundamental requirements that enabled a 20-year, large-scale project not only survive but also achieve its overall mission in face significant challenges (Evans, 1988b). facing major initiative differ crucially from those confronting focused cohesive limited project. Contrast task obtaining lunch for oneself with preparing several battalions an army. For yourself, you can find convenience store, buy ready-made sandwich drink, eat lunch, discard packaging as leave. Feeding requires massive amounts ingredients, storing them, identifying recipes commensurate huge quantities, different components meal parallel numerous personnel, distributing food short time large numbers, deploying support facilities pick up (and store) leftovers, completing cleanup, so on.