The agent paradigm can be seen as an extension of the notion of (active) objects by concepts like autonomy and cooperation. Mainstream object-oriented modeling techniques do not a...
The Transformation Model TRM was recently introduced 10 in the literature by Sandhu and Ganta. TRM is based on the concept of transformation of rights. The propagation of access ri...
Relational database systems represent the current standard technology for implementing database applications. Now that the object-oriented paradigm becomes more and more mature in...
We describe a case study that uses grid computing techniques to support the collaborative learning of high school students investigating cosmic rays. Students gather and upload sc...
Marjorie Bardeen, Eric Gilbert, Thomas Jordan, Pau...
We present a dynamic tree modeling and representation technique that allows complex tree models to interact with their environment. Our method uses changes in the light distributi...