Experience and Activities:

Regular appointments:

• 1992-- University Professor of Computational Statistics (with tenure), George Mason University, Fairfax, Virginia.
• 1979--92 Director of Research and Design, IMSL, Inc., Houston, Texas.
• 1974--79 Assistant Professor, then (1978) Associate Professor (with tenure), Department of Statistics, Iowa State University, Ames, Iowa.

Visiting or part-time appointments:

• 2004--05 Research Fellow, National Agricultural Statistics Service (USDA), Fairfax, Virginia.
• 1996--98 Program Director, Statistics (MPS/DMS), National Science Foundation, Arlington, Virginia.
• 1993--94 Senior Research Fellow, Bureau of Labor Statistics (USDoL), Washington, DC.
• 1989--92 Adjunct Professor of Biometry, University of Texas Health Science Center, Houston, Texas.
• 1987--92 Adjunct Professor, Department of Statistics, Rice University, Houston, Texas.
• 1986, 1989 UNDP Expert (Consultant), United Nations FAO, Duty Station: New Delhi, India.
• 1985 Visiting Professor, Department of Mathematics, University of Texas at Arlington, Arlington, Texas.
• 1980--87 Adjunct Associate Professor, Department of Mathematical Sciences, Rice University, Houston, Texas.
• 1979 Visiting Professor, Mathematical Sciences, University of Texas at Dallas, Richardson, Texas.
• 1973--74 Lecturer, Department of Statistics, Texas A&M University, College Station, Texas.
• 1971--73 Research Assistant, Department of Statistics, Texas A&M University, College Station, Texas.
• 1969--71 Instructor, Department of Mathematics, Stephen F. Austin State University, Nacogdoches, Texas.
• 1966--69 High School Teacher, Cottonport, Louisiana.
• 1965--66 High School Teacher, Pelahatchie, Mississippi.

Editorial activities:

• Senior Editor, Communications in Statistics, 1994--.
• Associate Editor, ACM Transactions on Mathematical Software, 1994--97.
• Associate Editor, Journal of Computational and Graphical Statistics, 1992--96.
• Associate Editor, The American Statistician, 1989--90.
• Member of Advisory Editorial Board of Computational Statistics Quarterly, 1985--90.
• Member of Editorial Board of Computational Statistics and Data Analysis, 1983--90.
• Editor, Current Index to Statistics, 1981--84.
• Area Editor, Modeling (published by Technical Committee on Simulation, IEEE), 1980--81.
• Reviewer for Mathematical Reviews of AMS, 1977--94.
• Co-editor, Algorithms Section, Communications in Statistics, 1977--94.
• Member of Editorial Board of the Mathematical Tables Publication Project of the Institute of Mathematical Statistics, 1976--86.

Professional and learned societies:

• Fellow of the American Association for the Advancement of Science (AAAS).
• Fellow of the American Statistical Association (ASA).
• Elected Member of the International Statistical Institute (ISI).
• Fellow of the Royal Statistical Society.
• Member of the Society for Industrial and Applied Mathematics (SIAM).
• Served on Boards of Directors of ASA, of the Interface Foundation, and of the American Federation of Information Processing Societies.
• Held several national offices in ASA.
• Invited speaker at many conferences.
• Lecturer in Visiting Lecturer Program of ASA and affiliated statistical societies (1982-90).

Ten selected publications: