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SACMAT
2009
ACM
16 years 2 months ago
Ensuring spatio-temporal access control for real-world applications
Traditional access control models, such as Role-Based Access Control (RBAC), do not take into account contextual information, such as location and time, for making access decision...
Manachai Toahchoodee, Indrakshi Ray, Kyriakos Anas...
SMA
2009
ACM
208views Solid Modeling» more  SMA 2009»
16 years 2 months ago
Accelerating geometric queries using the GPU
We present practical algorithms for accelerating geometric queries on models made of NURBS surfaces using programmable Graphics Processing Units (GPUs). We provide a generalized f...
Adarsh Krishnamurthy, Sara McMains, Kirk Haller
INFOCOM
2008
IEEE
16 years 1 months ago
iBubble: Multi-Keyword Routing Protocol for Heterogeneous Wireless Sensor Networks
— Many tasks require multiple sensing capabilities; in Wireless Sensor Networks (WSN), it is expensive to deploy a homogeneous network wherein every sensor has the same functiona...
Xiaoming Lu, Matt Spear, Karl N. Levitt, Shyhtsun ...
VTC
2008
IEEE
156views Communications» more  VTC 2008»
16 years 1 months ago
Channel Asymmetry and Random Time Slot Hopping in OFDMA-TDD Cellular Networks
Abstract—This paper studies the performance of orthogonal frequency division multiple access – time division duplex (OFDMA-TDD) cellular networks when jointly applying dynamic ...
Ellina Foutekova, Patrick Agyapong, Harald Haas
ACIVS
2007
Springer
16 years 1 months ago
Spatiotemporal Fusion Framework for Multi-camera Face Orientation Analysis
In this paper, we propose a collaborative technique for face orientation estimation in smart camera networks. The proposed spatiotemporal feature fusion analysis is based on active...
Chung-Ching Chang, Hamid K. Aghajan
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