A modern server system must deliver a complex set of obligations towards its users. We study the concept of roles as autonomous encapsulations of a set of promises. Using virtuali...
We describe a VRML/Java-based virtual environment that is populated with heterogeneous articulated agents. In this simulated environment, agents compete for collecting certain obj...
Grid environments enable users to share non-dedicated resources that lack performance guarantees. This paper describes the design of application-centric middleware components to a...
We present a novel method of extracting topological and metric geographical data using only positional data sensed from personnel movements. We extend research from the field of r...
—Federated computing environments offer requestors the ability to dynamically invoke services offered by collaborating providers in the virtual service network. Without an effici...