As a platform for community networks, information spaces using the city metaphor are being developed in worldwide. This paper comparesthe trials of digital cities. Four digital cit...
Recent debate has centered on the relative promise of focusing user-interface research on developing new metaphors and tools that enhance users’ abilities to directly manipulate...
The Java Security Model has undergone considerable evolution since its initial implementation. However, due to its historical focus on securing machines against attack from hostil...
As computer networks improve, more social and work interactions are carried out "virtually" by geographically separated group members. In this paper we discuss the desig...
Many on-line interaction environments have a large number of users. It is difficult for the participants, especially new ones, to form a clear mental image about those with whom t...