856 search results - page 100 / 172 » Location-based Spatial Queries |
168
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CGI
2003
IEEE
15 years 10 months ago
2003
IEEE
Location-aware mobile users need to access, query, and visualize, geographic information in a wide variety of applications including tourism, navigation, environmental management,...
191
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WWW
2008
ACM
16 years 7 months ago
2008
ACM
This paper presents PrivacyGrid - a framework for supporting anonymous location-based queries in mobile information delivery systems. The PrivacyGrid framework offers three unique...
150
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GIS
1995
ACM
15 years 10 months ago
1995
ACM
Polygonal objects are characterized by the following well-known parameters: number of vertices, area, perimeter and so on. These parameters describe the data sets that are used in...
270
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
Abstract Peer-to-peer (P2P) networks have become a powerful means for online data exchange. Currently, users are primarily utilizing these networks to perform exact-match queries a...
192
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COMPSAC
2002
IEEE
15 years 11 months ago
2002
IEEE
In this paper, an effective content-based visual image retrieval system is presented. This system consists of two main components: visual content extraction and indexing, and quer...