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GIS
1999
ACM
14 years 2 months ago
1999
ACM
: The paper is concerned with the effective and efficient processing of spatiotemporal selection queries under varying degrees of approximation. Such queries may employ operators l...
COSIT
1999
Springer
14 years 2 months ago
1999
Springer
Cur rent ont ologi es' upp er-le vel tax onomi c str uctur e is oft en qui te com plica ted and hard to und ersta nd. In thi s pap er I sho w how the the oret ical too ls of ...
COSIT
1999
Springer
14 years 2 months ago
1999
Springer
Previous recent research on human wayfinding has focused primarily on mental representations rather than processes of wayfinding. This paper presents a formal model of some aspect...
IGARSS
2009
13 years 7 months ago
2009
The Prairie Pothole Region (PPR) of the US and Canada is characterized by thousands of shallow, water-filled depressions with sizes ranging from a fraction of a hectare to several...
COSIT
1999
Springer
14 years 2 months ago
1999
Springer
Spatial information is information bound to spatial entities such as regions. It is based on the spatial structure alone (the valley includes the field) or connects thematic predic...