George A. (Jay) Keyworth II, nuclear physicist and chairman of the Washington, D.C.-based industrial consulting firm, the Keyworth Company, has become director of research for the Hudson Institute for public policy research, Indianapolis, Ind. From 1981 to 1985, Keyworth was Science Adviser to President Reagan. He is currently a director of the Santa Fe Institute in New Mexico and the Center for Excellence in Education in McLean, Va. He holds a Ph.D. from Duke University. Robert A. Rouse, f