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Organisation
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The patterned order evident in some domain of action. A complex, adaptive system consisting of activity, communication and representation.
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Emergence
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Most systems display emergent properties – properties that emerge from the operation of the system and which is not present in any of the parts of the system.
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System
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An organised set of interdependent elements that exists for some purpose, has some stability and can be usefully viewed as a whole.
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Systemics
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The study of systems.
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Hard system
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Systems in which the goals of the system are relatively unproblematic. Many technological systems are hard systems.
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Soft system
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A social system that is designed to meet certain objectives. The objectives of a soft system may be problematic or open to interpretation.
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Complex adaptive system
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A system of organised complexity which continuously has to adapt to its environment.
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Open system
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A type of system that interacts with its environment.
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Variety
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A measure of the complexity of a system; the number of states a system can assume.
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Subsystem
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A coherent part of a system that can be treated as a system itself.
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Pattern
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Elements which repeat across situations.
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Actor
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Any human, animal or machine that can act.
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Articulation
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The action associated with the manipulation of data structures.
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Communication
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The process of enacting communicative acts. The accomplishment of meaning between actors.
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Coordination
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The achievement of joint activity by a group of actors.
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