系统化

Institute for Systems and Technologies of Information, Control and Communication

International Fuzzy Systems Association

World Organisation of Systems and Cybernetics

African Association of Remote Sensing of the Environment

European Association for External Thermal Insulation Composite Systems

International Federation for Systems Research

Sistema de Cooperación entre las Fuerzas Aéreas Americanas

Academic Council on the United Nations System

Agricultural Market Information System

CGIAR System Organization

Coordinating Committee for International Staff Unions and Associations of the United Nations System

European Agency for the Operational Management of large-scale IT Systems in the Area of Freedom, Security and Justice