688 search results - page 40 / 138 » A Calculus for Access Control in Distributed Systems |
ECIS
2000
13 years 10 months ago
2000
The concept of context-dependent access control has emerged during the last years: Information about the state of a process model of a working environment is combined with general ...
SACMAT
2009
ACM
14 years 3 months ago
2009
ACM
Traditional access control models, such as Role-Based Access Control (RBAC), do not take into account contextual information, such as location and time, for making access decision...
GRID
2005
Springer
14 years 2 months ago
2005
Springer
— Access control in computational grids is typically provided by a combination of identity certificates and local accounts. This approach does not scale as the number of users a...
HYBRID
2009
Springer
14 years 4 months ago
2009
Springer
We investigate a new approach for solving boundary control problems for dynamical systems that are governed by transport equations, when the control function is restricted to binar...
CCS
2007
ACM
14 years 3 months ago
2007
ACM
In defining large, complex access control policies, one would like to compose sub-policies, perhaps authored by different organizations, into a single global policy. Existing po...