Much of the available collaboration support tools focus on sharing of documents and managing projects that require planned activities. These tools tend to fall short in meeting “principle of least effort”, or take into account the reality of complex overlapping scheduling of professionals. I propose DiNa, a set of recommendations as a framework for a topic-centric, as opposed to the conventional document-centric, collaboration system utilizing readily available devices. A series of prototypes are used to demonstrate the novel interaction techniques that enable collaborators to define ‘topics’ and address them in their own terms. The framework aims to complement existing systems, and the evaluation reveals suggestions for improving such systems for effective collaboration in different modes.
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