Ubiquitous computing poses new usability challenges that cut across design and development. We are particularly interested in "spaces" enhanced with sensors, public disp...
In this paper we address the problem of on-line recognition of human activities taking place in a public area such as a shopping center. We consider standard activities; namely, en...
Access to historically significant email archives poses challenges that arise less often in personal collections. Most notably, searchers may need help making sense of the identit...
Abstract--The advent of electronic commerce and personal communications on the Internet heightens concerns over the lack of privacy and security. Network services providing a wide ...
Geographical Information Systems (GIS) are routinely used by public and private organisations and enterprises as well as lay persons. It is becoming an infrastructure and a precond...