Education
| B.S. | Mathematics | University of Akron | 1966 |
| Ph. D. | Computer Science | Cornell University | 1970 |
Professional Career
| 1998-Present | Principal Member, Technical Staff, |
| Computational Sciences and Mathematics Research Department | |
| Sandia National Laboratories | |
| 1989-1998 | Chief, Mathematical and Computational Sciences Division |
| National Institute of Standards and Technology | |
| (Formerly, National Bureau of Standards) | |
| 1994-1995 | Program Analyst, Program Office |
| National Institute of Standards and Technology | |
| 1987-1989 | Chief, Scientific Computing Division |
| National Bureau of Standards | |
| 1986-1987 | Acting Chief, Scientific Computing Division |
| National Bureau of Standards | |
| 1986-Present | Group Leader, Optimization Group |
| National Bureau of Standards | |
| 1982-1986 | Computer Scientist |
| National Bureau of Standards | |
| 1978-1982 | Associate Director, Mathematics Division |
| U. S. Army Research Office | |
| 1975-1978 | Mathematician |
| U. S. Army Research Office | |
| 1972-1975 | Assistant Professor of Mathematics |
| Rensselaer Polytechnic Institute | |
| 1970-1972 | Assistant Professor of Computer Science |
| University of Kansas |