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sd1 - SystemDynamics1 CAP4800/5805 SystemsSimulation ,...

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System Dynamics 1 CAP4800/5805 Systems Simulation
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What is System Dynamics Computer simulation modeling for studying and managing  complex feedback systems, such as business and other  social systems  System:  In general, a collection of interacting elements that function together  for some purpose Here,  feedback  is the differentiating descriptor Properties of dynamic problems Contain quantities that vary over time Variability can be described causally Important causal influences can be contained within a closed  system of feedback loops
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History Cybernetics (Wiener, 1948): the study of how biological,  engineering, social, and economic systems are controlled and  regulated Industrial Dynamics (Forrester, 1961): applied principles of  cybernetics to industrial systems System Dynamics: Forrester’s work has been broadened to  include other social and economic systems Relying on computer, System Dynamics provides a  framework in  which to apply the idea of systems theory to  social and economic problems
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System Dynamics Modeling Identify a problem Develop a dynamic hypothesis explaining the cause of the  problem  Create a basic structure of a causal graph Augment the causal graph with more information Convert the augmented causal graph to a System Dynamics  flow graph Translate a System Dynamics flow graph into DYNAMO  programs or equations
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Critical Aspects Thinking in terms of cause-and-effect  relationships Focusing on the feedback linkages among  components of a system Determining the appropriate boundaries for  defining what is to be included within a  system
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