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ECTEL
2007
Springer
15 years 3 months ago
The Everlasting Dawn of Educational Brokers - A Search for Key Design Principles
In the last couple of years we have evidenced several initiatives promoting the vision of open educational systems. Educational brokers are supposed to take advantage of this ‘in...
Bernd Simon, Petra Oberhumer, Robert Kristöfl
COMCOM
1998
78views more  COMCOM 1998»
14 years 9 months ago
The performance of SQL queries to an X.500 directory system
The X.500 standard speci es a distributed directory service designed to store information about people and objects associated with computer networks. Its API is geared toward retr...
David Barrowman, Patrick Martin
TMM
2002
158views more  TMM 2002»
14 years 9 months ago
Foveated video quality assessment
Most image and video compression algorithms that have been proposed to improve picture quality relative to compression efficiency have either been designed based on objective crite...
Sanghoon Lee, Marios S. Pattichis, Alan C. Bovik
CORR
2008
Springer
189views Education» more  CORR 2008»
14 years 9 months ago
Algorithms for Dynamic Spectrum Access with Learning for Cognitive Radio
We study the problem of dynamic spectrum sensing and access in cognitive radio systems as a partially observed Markov decision process (POMDP). A group of cognitive users cooperati...
Jayakrishnan Unnikrishnan, Venugopal V. Veeravalli
NETWORKS
2010
14 years 8 months ago
Probabilistic models for the Steiner Tree problem
We consider a probabilistic model for the Steiner Tree problem. Under this model the problem is defined in a 2-stage setting over a first-stage complete weighted graph having it...
Vangelis Th. Paschos, Orestis Telelis, Vassilis Zi...