State-of-the-art and emerging scientific applications require fast access to large quantities of data and commensurately fast computational resources. Both resources and data are ...
Ian T. Foster, Carl Kesselman, Gene Tsudik, Steven...
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
Optimistic replication approaches are often employed on mobile devices, which raises the need for reconciliation of concurrently modified data. We propose that three-way merging ...
Sketching techniques can provide approximate answers to aggregate queries either for data-streaming or distributed computation. Small space summaries that have linearity propertie...
The successful execution of workflows using mobile services is dependant on the services behaving as expected. The management of this behaviour in Akogrimo is achieved by a contex...
Robert B. Piotter, Tom Kirkham, Julian R. Gallop, ...