It takes the spatial metaphor standard from the computer window desktop interface one step further by incorporating the concept of scale. This allows information to be created not only at any location, but at any size as well. We have developed an application framework for creating simulation-based learning environments. Guidance material and other software aids facilitate learning. The simulation allows learners to close freeway lanes and divert traffic to an arterial road.
Users can see the effect of the detour on freeway and arterial delay.
Users can then adjust signal timing interactively on a time space diagram and watch the effect of their adjustment on green band changes and on arterial delays and total delays. Current WWW browsers are still primitive in that they do not support many of the user's navigational needs. We propose a new browsing interface based on the Elastic Windows approach with hierarchical windows and multiple window operations. It provides a flexible organization where users can quickly organize and restructure the pages on the screen as they reformulate their goals. The National Library of Medicine is preparing an archive consisting of anatomical images of a male and a female subject, including MRI, CT and cryosection images.