Abstract. Virtual professional communities require a strong coevolution of their social and information systems. To ensure that the evolutionary process of their socio-technical sy...
: In information systems that support knowledge-discovery applications such as scientific exploration, reliance on highly structured ontologies as data-organization aids can be lim...
We study the specification of access control policy in large-scale distributed systems. We present Cassandra, a language and system for expressing policy, and the results of a sub...
Pen-based interfaces offer exciting opportunities in ubiquitous computing by enabling new hardware form factors and socially acceptable computing tasks. However, prevailing ink re...
We present mechanisms, architectures, and an implementation addressing challenges with mobile opportunistic commerce centering on markets and mechanisms that support the procureme...