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129
Voted
GIS
1998
ACM
15 years 3 months ago
1998
ACM
We study the accuracy of data on some local topographic attributes derived from digital elevation models (DEMs). First, we carry out a test for the precision of four methods for ca...
136
Voted
GIS
1998
ACM
15 years 3 months ago
1998
ACM
Spatial relations are the basis for many selections users perform when they query geographic information systems (GISs). Although such query languages use natural-language-like te...
115
Voted
GIS
2010
ACM
15 years 2 months ago
2010
ACM
Since navigation systems and tracking devices are becoming ubiquitous in our daily life, the development of efficient methods for processing massive sets of mobile objects are of ...
113
Voted
GIS
2010
ACM
15 years 2 months ago
2010
ACM
Top-k queries are a popular type of query in Wireless Sensor Networks. Typical solutions rely on coordinated root-tonodes and nodes-to-root messages and on maintaining filters at...
276
click to vote
GIS
2006
ACM
16 years 4 months ago
2006
ACM
Remotely sensed data, in particular satellite imagery, play many important roles in environmental applications and models. In particular applications that study (rapid) changes in...