.SystemDynamics

Information

The SystemDynamics library is designed as a graphical library for modeling mass and information flows in a continuous-time system using Prof. Jay Forrester's System Dynamics metaphor. Two separate and independent versions of this library had originally been created by Dr. Stefan Fabricius and by Prof. François Cellier and his students. These have now been merged into a single version that has furthermore been enhanced as well.

System Dynamics offers a fairly low-level graphical interface, not much different from a block diagram. The fact that continuous systems contain differential equations is hidden from the user by talking about levels, i.e., quantities that can accumulate (state variables), and rates, i.e., quantities that influence the accumulation and/or depletion of levels (state derivatives).

The System Dynamics modeling metaphor is widely used especially by researchers in the life sciences and social sciences.

References:

1. Cellier, F.E. (1991), Continuous System Modeling, Springer-Verlag, New York, ISBN: 0-387-97502-0, 755p.
2. Fisher, D.M. (2007), Modeling Dynamic Systems: Lessons for a First Course, 2^nd Edition, ISEE Systems.
3. Forrester, J.W. (1971), Principles of Systems, Pegasus Communications, 387p.

Corresponding Author:

Prof. Dr. François E. Cellier
Institut für Computational Science
ETH Zürich
ETH Zentrum CAB G82.1
CH-8092 Zürich
Switzerland

Phone: +41(44)632-7474
Fax: +41(44)632-1374
Email: FCellier@Inf.ETHZ.CH
URL: http://www.inf.ethz.ch/~fcellier/

Other Main Author:

Dr. Stefan Fabricius
PROMASIM GmbH
Dorfstr. 34
CH-8835 Feusisberg/SZ
Switzerland

Phone: +41(44)687-5015
Fax: +41(44)687-5016
Email: stefan.fabricius@promasim.ch
URL: http://www.promasim.com/

Version 2.1 update:

Wolfram MathCore AB
Teknikringen 1F
SE-583 30 Linköping
Sweden

Phone: +46(13)328500
URL: http://www.wolframmathcore.com/

Release Notes:

• Version 1.0: April 9, 2002
• Version 2.0: September 13, 2007
• Version 2.1: October 16, 2013
• Version 2.1.1: January 13, 2020
• Version 2.1.2: February 3, 2023

Copyright (C) 2002-2006, Stefan Fabricius.
Copyright (C) 2007-2013, François E. Cellier.

The SystemDynamics package is free software; it can be redistributed and/or modified under the terms of the 3-Clause BSD License.

 

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Contents

Name	Description
UsersGuide	User's Guide
Interfaces	Connectors and partial models of the System Dynamics methodology
Auxiliary	Auxiliary elements of the System Dynamics methodology
Functions	Functions of the System Dynamics methodology
Levels	Levels of the System Dynamics methodology
Rates	Rates of the System Dynamics methodology
Sources	Sources and sinks of the System Dynamics methodology
IndustrialDynamics	Factory models
PopulationDynamics	Ecological models
WorldDynamics	World models
IntroductoryExamples	Introductory example codes of the System Dynamics methodology

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