The International Society for the Systems Sciences (ISSS) is a worldwide organization for systems sciences. The overall purpose of the ISSS is: to promote the development of conceptual frameworks based on general system theory, as well as their implementation in practice. It further seeks to encourage research and facilitate communication between and among scientists and professionals from various disciplines and professions at local, regional, national, and international levels. Initially conceived in 1954 as the Society for the Advancement of General Systems Theory, and started in 1955/56, the Society for General Systems Research became the first interdisciplinary and international co-operation in the field of systems theory and systems science. In 1988 it was renamed to the International Society for the Systems Sciences. Source: Wikipedia (en)