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FLAIRS
2004
15 years 8 months ago
A Surveillance System based on Multiple Mobile Sensors
A methodology for surveillance of multiple targets through a distributed mobile sensor network is proposed in this paper. We examine coordination among sensors that monitor a rect...
K. Madhava Krishna, Henry Hexmoor, Subbarao Pasupu...
ICC
2007
IEEE
149views Communications» more  ICC 2007»
16 years 25 days ago
Cluster-Based Cooperative Spectrum Sensing in Cognitive Radio Systems
— In cognitive radio systems, secondary users can be coordinated to perform cooperative spectrum sensing so as to detect the primary user more accurately. However, when the sensi...
Chunhua Sun, Wei Zhang, Khaled Ben Letaief
FLAIRS
2008
15 years 7 months ago
A Framework for Evaluating Semantic Knowledge in Problem-Solving-Based Intelligent Tutoring Systems
We describe a framework for building intelligent tutoring systems that offer an advanced evaluation of learners' semantic knowledge. The knowledge model makes a pedagogical d...
Philippe Fournier-Viger, Roger Nkambou, Andr&eacut...
SP
2007
IEEE
183views Security Privacy» more  SP 2007»
16 years 23 days ago
Ciphertext-Policy Attribute-Based Encryption
In several distributed systems a user should only be able to access data if a user posses a certain set of credentials or attributes. Currently, the only method for enforcing such...
John Bethencourt, Amit Sahai, Brent Waters
SACMAT
2005
ACM
16 years 2 days ago
Purpose based access control of complex data for privacy protection
As privacy becomes a major concern for both consumers and enterprises, many research efforts have been devoted to the development of privacy protecting technology. We recently pr...
Ji-Won Byun, Elisa Bertino, Ninghui Li