JSIAM is not a branch but a Japanese counterpart of the Society for Industrial and Applied Mathematics (SIAM) based in the United States.
As same as SIAM, JSIAM publishes academic journals in Japanese and English, hold academic conferences,[1] and give awards to applied mathematicians with JSIAM membership.
The finance of JSIAM is based on membership fee and support from their corporate sponsors.
Their sponsors include Canon, Nissan, NEC, NTT, Hitachi, Fujitsu and Ricoh.
As part of the Eastern Asian community, JSIAM is partially supporting EASIAM.