253 search results - page 33 / 51 » Spatial Data Integrity Constraints in Object Oriented Geogra... |
GIS
2010
ACM
13 years 6 months ago
2010
ACM
With the popularity of location-based services and the abundant usage of smart phones and GPS enabled devices, the necessity of outsourcing spatial data has grown rapidly over the...
ISI
2007
Springer
14 years 1 months ago
2007
Springer
—Semantic Event Tracker (SET) is a highly interactive visualization tool for tracking and associating activities (events) in a spatially and Multimedia Enriched Virtual Environme...
ICDE
2002
IEEE
14 years 8 months ago
2002
IEEE
Spatio-temporal databases store information about the positions of individual objects over time. In many applications however, such as traffic supervision or mobile communication ...
VRST
1998
ACM
13 years 11 months ago
1998
ACM
Distributed virtual environments allow users at di erent geographical locations to share and interact within a common virtual environment via a local network or through the Intern...
MDM
2009
Springer
14 years 1 months ago
2009
Springer
Creation of pedagogical learning models to handle the specificity of mobile learning and the inherent constraints of mobile devices is a fundamental challenge in mobile learning. ...