1. Department of Physics, University of Miami, Coral Gables, FL 33124, USA.
2. Department of Biology, University of Miami, Coral Gables, FL 33124, USA.
3. Department of Mathematics, University of Miami, Coral Gables, FL 33124, USA.
4. Department of Computer Science, University of Miami, Coral Gables, FL 33124, USA.
5. Department of International Studies, University of Miami, Coral Gables, FL 33124, USA.
6. Galisteo Consulting Group, Albuquerque, NM 87110, USA.
7. The MITRE Corporation, McLean, VA 22102, USA.
8. Complex Systems Center, University of Vermont, Burlington, VT 05405, USA.