To name a few: Milne, Nicol, and Trave-Massuyes (2001) discuss TIGER, a system that is used to perform fault diagnosis of industrial gas turbines used for power generation; Montani et al., (2003) present an intelligent system for managing type 1 diabetic patients, which, in part, utilizes model-based reasoning techniques; Wotawa (2000) describes a model-based reasoning system that is designed to locate software bugs in VHDL programs; and De Koning, Bredeweg, Breuker, & Wielinga (2000) describe a model-based diagnosis system that helps to monitor and diagnose learner behaviors for an automated tutoring system.