1. Virginia Tech, Blacksburg, VA, USA
2. Virginia Tech, Blackburg, VA, USA
3. Department of Computer Science, University at Albany -- State , NY, USA
4. University of Maryland, College Park, MD, USA
5. University of Maryland, , MD, USA
6. University of California at Santa Cruz, Santa Cruz, CA, USA
7. CACI Inc., Lanham, MD, USA
8. CACI Inc, Lanham, MD, USA
9. BASIS Technology, Herndon, VA, USA
10. , ,
11. San Diego State University, San Diego, CA, USA
12. University of California at San Diego, San Diego, CA, USA