1. NASA Postdoctoral Program Fellow, NASA GSFC,Greenbelt,Maryland,United States of America
2. NASA GSFC,Center for Research and Exploration in Space Science and Technology,Greenbelt,United States of America
3. Karlsruhe Institute of Technology,Karlsruhe,Germany
4. Argonne National Laboratory,Lemont,Illinois,United States of America
5. Hiroshima University,Hiroshima,Japan
6. NASA,Goddard Space Flight Center,Greenbelt,Maryland,United States of America
7. Nagoya University,Institute for Space-Environment Research,Nagoya,Japan