Design process and decision rationale models for the N-Chime interface system

The N-CHIME interface system was designed with the broad objective of enabling, or "empowering," different types of users to carry out effective modeling and simulation applications with the Hierarchical Simulation Language (HSL). A design methodology was developed that is based on a "parallel processes" model: a triad of parallel design processes, one directed at each of the user, the interface, and the application. For comprehensive and systematic interface design, such a methodology is essential. N-CHIME has been implemented and tested. This paper presents an overview of the design models and some of the resulting tools and techniques supportive of the application-specific user. It also highlights the importance of providing online access to the design decision rationales that were used for the various user-visible tools and devices.