Impedance Matching: When you need to know What
Paper to be presented at HCI2002, London, September 2002.
Download draft paper as PDF (269Kb)
D. Ramduny-Ellis and A. Dix (2002). Impedance Matching: When you need
to know What. Proceedings of HCI2002 . Faulkner X., Finlay J.and
Detienne F. (eds), London, UK, Springer, pp 121 -137..
- See also:
- more on web architectures at: http://www.hcibook.com/alan/topics/web/
- related work on time at: http://www.hcibook.com/alan/topics/time/
Feedthrough and awareness of user activities are major issues in CSCW. A key
difference between awareness and goal-directed feedthrough lies in the required
pace and quality of feedthrough. Getting the right pace of feedthrough is important
for usability and to avoid overloading networks. Notification mechanisms should
therefore allow dynamic tuning of the pace and volume of update events. This
matching of the required and supplied pace of update events we call impedance
matching. A separable notification server is often ideally placed to perform
impedance matching between end-user clients. These design principles have been
applied in an experimental notification server Getting-to-Know.
keywords: awareness, feedthrough, notification mechanism, separable notification server, event notification, pace, CSCW infrastructure.
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