American Astronomical Society
International Astronomical Union

Professional Activities：

Referee for: Astrophysical Journal, Astronomical Journal, Publication of the Astronomical Society of Japan, Astronomy and Astrophysics, Science, Nature, Icarus, Astrophysical Letters and Communications.
Referee for: National Radio Astronomy Observatory, National Optical Astronomy Observatories, United Kingdom Infrared Telescope, National Aeronautics and Space Administration, National Science Foundation, National Research Council of Canada, National Science Council of Taiwan.
Managing Editor for Astrophysical Letters and Communications.
Member of: NRAO Users Committee, NSF Division of Astronomical, Sciences Visiting Committee, USRA Astronomy and Space Physics Science Council.
Member of: Advisory Committee for the Academia Sinica Institute of Astronomy and Astrophysics.
Member of: Submillimeter Array Steering Committee, Central Engineering Advisory Committee, Federal Scientist Appointments Committee, Professional Accomplishments Evaluation Committee.