2191 search results - page 45 / 439 » Query Processing in the ROL system |
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SIGMOD
2008
ACM
15 years 10 months ago
2008
ACM
As the size of an RFID tag becomes smaller and the price of the tag gets lower, RFID technology has been applied to a wide range of areas. Recently, RFID has been adopted in the b...
ICDCS
2008
IEEE
15 years 4 months ago
2008
IEEE
We present a simple, yet powerful, approach for the specification and enforcement of authorizations regulating data release among data holders collaborating in a distributed comp...
PPAM
2005
Springer
15 years 3 months ago
2005
Springer
Abstract. In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorit...
ICDE
2006
IEEE
15 years 3 months ago
2006
IEEE
Scientific instruments, such as radio telescopes, colliders, sensor networks, and simulators generate very high volumes of data streams that scientists analyze to detect and under...
CIKM
2005
Springer
15 years 3 months ago
2005
Springer
In this paper, we propose a novel energy-efficient approach, a localized routing tree (LRT) coupled with a route redirection (RR) strategy, to support various types of queries. LR...