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142
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SACMAT
2009
ACM
15 years 11 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...
183
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SACMAT
2009
ACM
15 years 11 months ago
2009
ACM
An access control system is often viewed as a state transition system. Given a set of access control policies, a general safety requirement in such a system is to determine whethe...
152
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SIGCOMM
2009
ACM
15 years 11 months ago
2009
ACM
IPTV is increasingly being deployed and offered as a commercial service to residential broadband customers. Compared with traditional ISP networks, an IPTV distribution network (i...
151
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SIGCOMM
2009
ACM
15 years 11 months ago
2009
ACM
While some empirical studies on Online Social Networks (OSNs) have examined the growth of these systems, little is known about the patterns of decline in user population or user a...
141
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SIGECOM
2009
ACM
15 years 11 months ago
2009
ACM
Restricting the preferences of the agents by assuming that their utility functions linearly depend on a payment allows for the positive results of the Vickrey auction and the Vick...