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MM
2009
ACM
15 years 4 months ago
2009
ACM
Traditional teleconferencing systems have enabled remote communications via audiovisual modalities. However, in real life, human touch such as encouraging pat plays a fundamental ...
CIA
1997
Springer
15 years 1 months ago
1997
Springer
Abstract. Whenever agents deal with con dential information, it is important that they comply with a principled security policy. We show how the database concept of multi-level sec...
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
Abstract— Frequency synchronization is one of the most important components in orthogonal frequency-division multiplexing (OFDM) systems. Recently, the discrete cosine transform ...
IPPS
2008
IEEE
15 years 4 months ago
2008
IEEE
Communications systems, encompassing VoIP, IM, and other personal media, present different challenges for P2P environments than other P2P applications. In particular, reliable com...
CN
2006
14 years 9 months ago
2006
We consider a system where each user is in one or more elementary groups. In this system, arbitrary groups of users can be specified using the operations of union, intersection, a...