Keyphrases
- virtual world
- access control
- virtual environment
- fine grained
- information technology
- e government
- virtual reality
- security policies
- conflict resolution
- mixed reality
- information systems
- physical world
- public sector
- multi user
- usage control
- virtual communities
- security requirements
- social context
- digital government
- game based learning
- role based access control
- trust management
- virtual space
- virtual learning environments