The Dow Chemical Company, University of Illinois at Urbana-Champaign;

Professor, Carnegie Mellon University

Unidel Professor of Physics, Department of Physics and Astronomy, University of Delaware

Sr. Research Scientist, Pacific Northwest National Laboratory

University of Cincinnati, Naval Postgraduate School

William F. Dietrich Professor, University of Minnesota

Professor of Chemistry, Penn State

Professor at DTU-Physics, Tech. Univ. of Denmark

School of Information Engineering, Minzu University of China

Professor of Computational Physics, University of Vienna