42 search results - page 7 / 9 » OLSEN: An Object-Oriented Formalism for Information and Deci... |
SASO
2007
IEEE
14 years 1 months ago
2007
IEEE
A fundamental problem that confronts decentralized reputation systems is the design of efficient, secure and incentive-compatible mechanisms to gather trust information despite m...
HICSS
2012
IEEE
12 years 3 months ago
2012
IEEE
—Real-time access to key performance indicators is necessary to ensure timeliness and effectiveness of operational business processes. The concept of Business Activity Monitoring...
CCS
2010
ACM
14 years 2 months ago
2010
ACM
In distributed environments, statements from a number of principals, besides the central trusted party, may influence the derivations of authorization decisions. However, existin...
SACMAT
2009
ACM
14 years 1 months ago
2009
ACM
Traditional access control models, such as Role-Based Access Control (RBAC), do not take into account contextual information, such as location and time, for making access decision...
SAC
2008
ACM
13 years 6 months ago
2008
ACM
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...