670 search results - page 22 / 134 » A RBAC-Based Policy Information Base |
TSP
2008
13 years 9 months ago
2008
We study the problem of tracking an object that is moving randomly through a dense network of wireless sensors. We assume that each sensor has a limited range for detecting the pr...
CSFW
2010
IEEE
14 years 1 months ago
2010
IEEE
—Authorization logics allow concise specification of flexible access-control policies, and are the basis for logic-based access-control systems. In such systems, resource owner...
FIW
2003
13 years 11 months ago
2003
Abstract. Features provide extensions to a basic service, but in new systems users require much greater flexibility oriented towards their needs. Traditional features do not easil...
ISW
1997
Springer
14 years 2 months ago
1997
Springer
Information security is based on access control models and cryptographic techniques. These are well established areas of research in computer security, but are not capable of supp...
TWC
2008
13 years 9 months ago
2008
In order to adapt to time-varying wireless channels, various channel-adaptive schemes have been proposed to exploit inherent spatial diversity in mobile/wireless ad hoc networks w...