828 search results - page 123 / 166 » Access Control in Location-Based Services |
VTC
2006
IEEE
15 years 3 months ago
2006
IEEE
— IEEE 802.11 WLAN has been widely accepted throughout the world. However, it has large overhead due to idle backoff slots and frequent collisions depending on the number of node...
CRYPTO
2005
Springer
15 years 3 months ago
2005
Springer
We investigate methods for providing easy-to-check proofs of computational effort. Originally intended for discouraging spam, the concept has wide applicability as a method for co...
MADNES
2005
Springer
15 years 3 months ago
2005
Springer
An outstanding security problem in mobile agent systems is resource access control, or authorization in its broader sense. In this paper we present an authorization framework for m...
PDP
2003
IEEE
15 years 3 months ago
2003
IEEE
: In this paper the problem of educational resource management in a cooperative learning environment is discussed. A task model was elaborated to determine both functional and leve...
RIDE
2002
IEEE
15 years 2 months ago
2002
IEEE
Current data management solutions are largely optimized for intra-enterprise, client-server applications. They depend on predictability, predefined structure, and universal admini...