371 search results - page 21 / 75 » Continuous Query Evaluation over Distributed Sensor Networks |
AMW
2010
13 years 9 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
ADHOCNETS
2009
Springer
14 years 2 months ago
2009
Springer
Although IEEE 802.15.4 is being considered as a promising standard for low-cost low-power Wireless Sensor Networks (WSNs), several issues in the specification are still open. One o...
EDBT
2006
ACM
14 years 7 months ago
2006
ACM
Abstract. Sensor networks monitor physical phenomena over large geographic regions. Scientists can gain valuable insight into these phenomena, if they understand the underlying dat...
ICDE
2004
IEEE
14 years 9 months ago
2004
IEEE
We examine the problem of evaluating selection queries over imprecisely represented objects. Such objects are used either because they are much smaller in size than the precise on...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
Spatial queries for extracting data from wireless sensor networks are important for many applications, such as environmental monitoring and military surveillance. One such query i...