4084 search results - page 148 / 817 » Constraints in spatial structures |
211
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SSD
1993
Springer
15 years 10 months ago
1993
Springer
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...
206
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RSCTC
2000
Springer
15 years 9 months ago
2000
Springer
Abstract. In spatial reasoning the qualitative description of relations between spatial regions is of practical importance and has been widely studied. Examples of such relations a...
186
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SASO
2008
IEEE
16 years 16 days ago
2008
IEEE
—Spatial computing systems are characterized by the extended physical environment in which they exist and function. Often this environment can be manipulated in various ways by t...
181
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ICC
2007
IEEE
16 years 15 days ago
2007
IEEE
— We present a new hybrid scheme which combines space-time block codes (STBC) and spatial multiplexing (SM) to achieve both diversity and spatial multiplexing gain. We design a n...
146
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VLDB
1994
ACM
15 years 10 months ago
1994
ACM
The performance of data-parallel algorithms for spatial operations using data-parallel variants of the bucket PMR quadtree, R-tree, and R+-tree spatial data structures is compared...