Presentation - SimulationwithSystemDynamics Models...

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    Simulation with System Dynamics  Models IE 680 Spring 2007 Po-Ching C. DeLaurentis April 19, 2007
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    Outline Systems Thinking  System Dynamics (SD)  Paradigm Comparison Basics of System Dynamics Quantification Challenges Simulation with System Dynamics- An Example Summary System Dynamics Resources
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    Systems Thinking Systems Thinking Early 20 th  century physicists began to challenge  Newtonian precepts; Werner Heisenberg, Norbert  Weiner, Von Bertalanffy “An approach for developing models to promote our  understanding of events , patterns of behavior  resulting in the events, and even more importantly,  the underlying structure  responsible for the patterns of  behavior”*  * http://www.systems-thinking.org
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    System Dynamics System Dynamics Introduced by Jay Forrester of MIT in 1958 “The study of information-feedback characteristics of  industry activity to show how organizational structure,  amplification (in policies), and time delays (in  decisions and actions) interact to influence the  success of the enterprise” (Forrest 1958 & 1961)
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    Paradigm Comparison of  Based Borshchev A , Filippov A. From System Dynamics and Discrete Event to Practical Agent Based  Modeling: Reasons, Techniques, Tools. Proceedings of the 22 nd  International Conference, July 25- 29, 2004, Oxford, England, UK. High Abstraction  Less Details Macro  Level Strategic Level Middle Abstraction  Medium Details  Meso Level Tactical  Level Low Abstraction  More Details  Micro Level  Operational Level Individual objects, exact sizes, distances, velocities, timings, … Agent Based Active objects Individual behavior  rules Direct or indirect  interaction Environment  models Discrete Event Entities (passive  objects) Flowcharts and/or  transport networks Resources Aggregates, Global Casual Dependencies, Feedback Dynamics, … Mainly discrete System Dynamics Levels (aggregates) Stock-and-Flow Diagrams Feedback loops Mainly continuous
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    Basics of System Dynamics Stock A Stock B Rate Decision Rules Stock-and-Flow Casual Loops
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This note was uploaded on 11/13/2010 for the course ISE 680 taught by Professor Santanu during the Spring '10 term at Purdue University Calumet.

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Presentation - SimulationwithSystemDynamics Models...

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