1. University of Arizona Tucson,Dept of Mathematics,AZ,USA
2. University of Maryland College Park,Dept of Computer Science,MD,USA
3. University of California, Los Angeles,Depts of Neurology and Bioengineering,Los Angeles,USA
4. University of California, Davis,Dept of Mathematics,Davis,CA,USA
5. Advanced Micro Devices, Inc,AMD Research,Austin,USA