University of California at Berkeley, CA
California Institute of Technology, Pasadena, CA
Emory University
Atlanta, GA
Louisiana State University, Baton Rouge, LA
The Chinese University of Hong Kong, Hong Kong
Colorado State University, Fort Collins, CO
Federal University of Rio De Janeiro, Brazil
University of Houston
Houston, TX
University of California
Riverside, CA
JNC for Advanced Scientific Research, Bangalore, India
Duke University
Durham, NC
University of Oklahoma
Norman, OK
Polish Academy of Sciences
Poland
Michigan State University, East Lansing, MI
Oregon State University, Corvallis, OR
Portland State Universitym Portland, OR
University of Texas at El Paso, El Paso, TX
Northeastern University
Boston, MA
Wuhan University of Technology, China
Indian Institute of Technology Roorkee, India
North Carolina A&T State University, NC
National Central University, Taiwan
Washington State University, Pullman, WA