Research ranges from linquistic grammar, speech semantics to spatial thought.
Database and Object Systems Group At Napier University, Edinburgh. Delite Group Advanced retrieval support for digital libraries at GMD Darmstadt. GaTech Scientific Visualization Visualization for Network Analysis, GIS, user-defined virtual environment, atmospheric simulation, fluid flow, as well as graphics rendering. At Georgia Tech University. HCIL Human-Computer Interaction Laboratory at the University of Maryland.