253 search results - page 16 / 51 » On the Decidability of the Safety Problem for Access Control... |
CDC
2009
IEEE
13 years 6 months ago
2009
IEEE
Abstract-- The safety control problem for hybrid automata with imperfect mode information and continuous control is addressed. When the controller does not have access to the mode ...
ICC
2007
IEEE
14 years 3 months ago
2007
IEEE
We consider opportunistic spectrum access for secondary users over multiple channels whose occupancy by primary users is modeled as discrete-time Markov processes. Due to hardware...
TCOM
2010
13 years 7 months ago
2010
Abstract—This paper considers an uplink time division multiple access (TDMA) cognitive radio network where multiple cognitive radios (secondary users) attempt to access a spect...
DBSEC
2010
13 years 9 months ago
2010
Abstract. We consider the problem of developing an abstract metamodel of access control in terms of which policies for protecting a principal's private information may be spec...
CCS
2005
ACM
14 years 2 months ago
2005
ACM
In a reputation-based trust-management system, agents maintain information about the past behaviour of other agents. This information is used to guide future trust-based decisions...