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WORDS
2005
IEEE
14 years 2 months ago
A Role-Based Access Control Policy Verification Framework for Real-Time Systems
This paper presents a framework for verifying the access control requirements of real-time application systems such as workflow management systems and active databases. The tempor...
Basit Shafiq, Ammar Masood, James Joshi, Arif Ghaf...
DASFAA
2007
IEEE
151views Database» more  DASFAA 2007»
13 years 10 months ago
The Tornado Model: Uncertainty Model for Continuously Changing Data
To support emerging database applications that deal with continuously changing (or moving) data objects (CCDOs), such as vehicles, RFIDs, and multi-stimuli sensors, one requires an...
Byunggu Yu, Seon Ho Kim, Shayma Alkobaisi, Wan D. ...
ICDE
2005
IEEE
172views Database» more  ICDE 2005»
14 years 2 months ago
Monitoring K-Nearest Neighbor Queries Over Moving Objects
Many location-based applications require constant monitoring of k-nearest neighbor (k-NN) queries over moving objects within a geographic area. Existing approaches to this problem...
Xiaohui Yu, Ken Q. Pu, Nick Koudas
CVPR
1999
IEEE
1071views Computer Vision» more  CVPR 1999»
14 years 10 months ago
Adaptive Background Mixture Models for Real-Time Tracking
A common method for real-time segmentation of moving regions in image sequences involves "background subtraction," or thresholding the error between an estimate of the i...
Chris Stauffer, W. Eric L. Grimson
DEBU
2002
161views more  DEBU 2002»
13 years 8 months ago
Indexing and Retrieval of Historical Aggregate Information about Moving Objects
Spatio-temporal databases store information about the positions of individual objects over time. In many applications however, such as traffic supervision or mobile communication ...
Dimitris Papadias, Yufei Tao, Jun Zhang, Nikos Mam...