| Chandrasekaran, B., and Kaindl, H. 1996. Representing Functional Requirements and User-system Interactions. |
....work in the cognitive aspects of design is very important, the current authors are more interested in establishing a basis for function rooted in reality rather than in our perceptions of it. The second category of work treats product function as an effect on the environment of the product (e.g. [Chandrasekaran and Kaindl 1996]. The third category, exemplified by [Qian and Gero 1996] defines function as relationships between inputs and outputs of energy, mass, and information, or as changes in the fluxes thereof. This category is most closely related to the definition used by the current authors. Clearly, each of these ....
Chandrasekaran, B., and Kaindl, H. 1996. Representing Functional Requirements and User-system Interactions.
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