


Joseph A. Schumpeter, 18831950 
This applet is an implementation of the basic industry dynamics model of Nelson & Winter(1982, part V). I developed it in order to permit to students to "play" with it and learn some basic evolutionary dynamics. At theoretical level, this applet shares naturally all the limitations of the initial model.
You can find a very quick description of the Nelson & Winter Model in this page.
This applet is based on two classes:
Class documentation generated by javadoc.
I also use the Corejava package from the excellent book of same title:
And the beautiful Graph package of Leigh Brookshaw.
The sources of this applet can now be read online:
This applet uses the initialization procedure used in Nelson & Winter (1982):
The parameter table can be used to setup different elements of the model:
All the values in the table must be integers. This is why some elements have
their name followed by "%" symbol: For these fields, a given integer value
will be divided by 100 in order to obtain a float.
Example: A value of 16 in "initial prod." box
is converted to 0.16 by the program.
This constraint makes possible the use of some standard elements in CoreJava
for checking of values given by the user.
Output
You can observe four graphics which describe the evolution of the industry.
This version is much faster and it is possible to study the long term evolution of the industry with many firms.
You must use a Java 1.5 compatible browser for running the model.
You can now run the model (new version) Or play with the interactive version where you will control one of the firms 
Class documentation generated by javadoc.
All comments are also welcome and will be greatly appreciated.
For a very good exposition of Nelson and Winter's models and their developments, see also Esben Sloth Andersen's Evolutionary economics page