55 search results - page 8 / 11 » An attribute-based access matrix model |
MOBIHOC
2006
ACM
14 years 8 months ago
2006
ACM
Recent studies on mobility modeling have focused on characterizing user mobility from real traces of wireless LANs (WLANs) and creating mobility models based on such characterizat...
POPL
2006
ACM
14 years 8 months ago
2006
ACM
In POPL 2002, Petrank and Rawitz showed a universal result-finding optimal data placement is not only NP-hard but also impossible to approximate within a constant factor if P = NP...
QEST
2005
IEEE
14 years 2 months ago
2005
IEEE
A framework to assess transient performance measures is introduced by generalizing the theory of the quasi Birthand-Death (QBD) paradigm to QBDs with marked time epochs (QBDm ). T...
ICC
2011
IEEE
12 years 8 months ago
2011
IEEE
—We consider a general wireless channel model for different types of code-division multiple access (CDMA) and space-division multiple-access (SDMA) systems with isometric random ...
ICIP
2005
IEEE
14 years 10 months ago
2005
IEEE
The lack of eye contact in video conference degrades the user's experience. This problem has been known and studied for many years. There are hardware-based solutions to the ...