981 search results - page 181 / 197 » Negation in Spatial Reasoning |
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Given a query point and a collection of spatial features, a multi-type nearest neighbor (MTNN) query finds the shortest tour for the query point such that only one instance of eac...
CHI
2008
ACM
14 years 7 months ago
2008
ACM
We present an empirical analysis of crossing-based dialog boxes. First, we study the spatial constraints required for efficient crossing-based interactions in the case of a simple...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Database system architectures are undergoing revolutionary changes. Most importantly, algorithms and data are being unified by integrating programming languages with the database ...
MOBIHOC
2002
ACM
14 years 7 months ago
2002
ACM
While several approaches have been proposed in literature for improving the performance of wireless packet data networks, a recent class of approaches has focused on improving the...
INFOCOM
2003
IEEE
14 years 21 days ago
2003
IEEE
— This paper studies TCP performance over multihop wireless networks that use the IEEE 802.11 protocol as the access method. Our analysis and simulations show that, given a speci...