The new communication technologies play a major role in the lives of children & adolescents, who have available an almost continual diet of highly vivid, on demand, audiovisual images.

This 2003 book reports the only national, random sample survey of US children and adolescents' use of all of the various media available to them conducted in at least the past 30 years.

The report describes the design and evaluation of classifiers for distinguishing humans, vehicles, aircraft, and background alarms based on seismic disturbances.