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CCS
2007
ACM
14 years 3 months ago
2007
ACM
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 ...
CSCWD
2007
Springer
14 years 3 months ago
2007
Springer
Business applications are more and more often developed on the basis of Web services. The aim is to provide platform independence and loose coupling between business applications ...
GRID
2007
Springer
14 years 3 months ago
2007
Springer
-- To date, not enough attention has been paid to issues surrounding the description and enforcement of policies for controlling Grid resources. These policies define the permitted...
GRID
2007
Springer
14 years 3 months ago
2007
Springer
— Currently deployed grids gather together thousands of computational and storage resources for the benefit of a large community of scientists. However, the large scale, the wid...
ICS
2007
Tsinghua U.
14 years 3 months ago
2007
Tsinghua U.
Process arrival pattern, which denotes the timing when different processes arrive at an MPI collective operation, can have a significant impact on the performance of the operatio...