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113
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SPATIALCOGNITION
2004
Springer
15 years 6 months ago
2004
Springer
Allen’s interval calculus is one of the most prominent formalisms in the domain of qualitative spatial and temporal reasoning. Applications of this calculus, however, are restric...
107
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ACSC
2003
IEEE
15 years 6 months ago
2003
IEEE
This paper presents an innovative strategy to synchronize all virtual clocks in asynchronous Internet environments. Our model is based on the architecture of one reference clock a...
123
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SSDBM
2003
IEEE
15 years 6 months ago
2003
IEEE
Relational index structures, as for instance the Relational Interval Tree, the Relational R-Tree, or the Linear Quadtree, support efficient processing of queries on top of existin...
109
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IBPRIA
2003
Springer
15 years 6 months ago
2003
Springer
We describe a technique for extracting vertices from range images of cluttered box-like objects. Edge detection is performed and an edge map is acquired. Extraction of vertices is ...
IMR
2003
Springer
15 years 6 months ago
2003
Springer
Quadratic elements place stringent requirements on a surface mesh smoother. One of the biggest challenges is that a good linear element may become invalid when mid-side nodes are ...