American Nuclear Society
The main objectives of the American Nuclear Society are the advancement of science and engineering relating to the atomic nucleus, and of allied sciences and arts, and the integration of the scientific disciplines constituting nuclear science and technology.
Institute for Operations Research and the Management Sciences (INFORMS)
INFORMS is the largest professional society in the world for professionals in the field of operations research (O.R.). It was established in 1995 with the merger of the Operations Research Society of America (ORSA) and The Institute of Management Sciences (TIMS).