American physicist, educator, and executive. Ph.D. Washington University (1966). Professional experience includes: research staff, director, Argonne National Laboratory (1966-1968, 1979-1984); assistant professor, University of Illinois (1969-1970); from associate professor to professor of physics and college dean, Brown University (1970-1979); member of advisory panel for division of physics, director, National Science Foundation (1975-1977, 1991-1993); founding chairman, National Society of Black Physicists (1977); professor of physics, vice president, University of Chicago (1979-1993); president, American Association for the Advancement of Science (1989); provost and vice president for academic affairs, University of California system (1993-1995); president, president emeritus, Morehouse College (1995-); from interim president to full president, chancellor, School of the Art Institute of Chicago (2010-).