2669 search results - page 471 / 534 » Complex Spatial Relationships |
ICDT
2010
ACM
14 years 2 months ago
2010
ACM
Relational data exchange deals with translating a relational database instance over some source schema into a relational database instance over some target schema, according to a ...
ESORICS
2007
Springer
14 years 1 months ago
2007
Springer
We propose the role-and-relation-based access control (R2 BAC) model for workflow systems. In R2 BAC, in addition to a user's role memberships, the user's relationships w...
ECBS
2009
IEEE
14 years 1 months ago
2009
IEEE
Future space missions such as the Mars Science Laboratory and Project Constellation suggest the engineering of some of the most complex man-rated software systems. The present pro...
AFRIGRAPH
2003
ACM
14 years 1 months ago
2003
ACM
Using a radiosity method to estimate light inter-reflections within large scenes still remains a difficult task. The two main reasons are: (i) the computations entailed by the rad...
KR
2000
Springer
14 years 1 months ago
2000
Springer
When reasoning in description, modal or temporal logics it is often useful to consider axioms representing universal truths in the domain of discourse. Reasoning with respect to a...