1. U.S. Naval Research Laboratory, Code 6792, Plasma Physics Division, Washington, DC 20375, USA
2. U.S. Naval Research Laboratory, Code 5514, Navy Center for Applied Research in Artificial Intelligence, Washington, DC 20375, USA
3. Department of Mathematics, George Mason University, Fairfax, Virginia 22030, USA
4. Aerospace, Transportation and Advanced Systems Laboratory of the Georgia Tech Research Institute, Atlanta, Georgia 30332, USA
5. Mechanical Engineering and Applied Mechanics University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA