| NRAO Positions: | 2006- | Assistant Director, New Initiatives Office | ||
| 2008- | VLBA Principal Scientist | |||
| 2001-2007 | Assistant Director in charge of VLA/VLBA Operations | |||
| 2003-2005 | Co-lead, Interferometry Software Division | |||
| 2001 | Deputy Assistant Director, in charge of Scientific Services | |||
| Operations, & Computing for VLA/VLBA Operations | ||||
| 2000-2003 | AIPS Group Leader | |||
| 1999-2001 | Division Head, Scientific Services, VLA/VLBA Operations | |||
| 1999- | Scientist (Continuing Appointment, 2001; Tenure, 2006) | |||
| 1998-2000 | Project Scientist/Manager, VLA-Pie Town Link Project | |||
| 1996-1998 | Associate Scientist |
| Previous Positions: | 1992-1996 | System Engineer, U.S. Space VLBI Project, | ||
| Jet Propulsion Laboratory (JPL) | ||||
| 1991-1994 | System Engineer, POINTS Study Team, JPL | |||
| 1989-1990 | Manager, Astrometric Technology Development, | |||
| Deep Space Network Advanced Systems Program, JPL | ||||
| 1988-1989 | Technical Group Leader, JPL | |||
| 1984-1996 | Member of the Technical Staff, JPL | |||
| 1981-1984 | Postdoctoral Research Associate, NRAO, Charlottesville | |||
| 1979-1981 | Research Assistant, University of Maryland | |||
| 1979-1981 | Radio Astronomer, Naval Research Laboratory |
| Education: | 1976-1981 | University of Maryland at College Park | ||
| M. S. in Astronomy, May 1978 | ||||
| Ph. D. in Astronomy, May 1981 | ||||
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Thesis: ``Radio Emission and the Forbidden Line Region | |||
| of Seyfert Galaxies,'' supervised by A. S. Wilson | ||||
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1972-1976 | University of California at Los Angeles | ||
| B. A. in Astronomy (summa cum laude), June 1976 |