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Design Space Analysis and Use-Representations

Allan MacLean, Dianne McKerlie
This chapter describes ways in which a QOC representation builds on, and relates to, other design representations. It does this in the context of describing a twelve-month project in which we explored user interface designs for future educational hypermedia systems. The chapter is organised around two threads. The first thread describes the generation and evolution of a set of Criteria which guide the design. In the present case, these Criteria are strongly grounded in a consideration of how the system will be used and they act as a reference to help guide the design process throughout its lifecycle. The second thread considers the relationship between the QOC representation and use-oriented representations such as tasks, scenarios and story boards. The main theme of this thread is to illustrate the ways in which a QOC representation provides a mechanism to focus on and abstract from salient features of these other more concrete representations. The QOC representation therefore complements the other representations by summarising and generalising their key attributes.
Scenario-Based Design: Envisioning Work and Technology in System Development, J.M. Carroll (ed), Wiley, New York, 1995, pp 183-207.