The focus of her lab is on early detection, differential diagnosis and proof of concept studies using cognitive enhancing drugs.

Dr. Rosen spoke of a small "proof of concept" study.

Therefore the first concept study got an immovable lens tube.

The second concept study retained the sliding tube for the lens, but used a selenium light meter.

NASA may select one or more investigations to continue into a development effort after detailed review of the concept studies.

New missions will receive $1.2 million to conduct concept studies.

Missions of opportunities will receive $250,000 to conduct concept studies.

The luxury car is expected to remain a pure concept study.

A second class of Aegis ship began with concept studies in 1978.

Wide-ranging concept studies link Greek science, religion, and politics with philosophy.