ECEM Workshop Model 2023 by Kai Neumann

The target .... The model should.... Participants Short ... Medium ... Long ... Categories/Colors (see Menu.... Filter) System boundaries

Mini model international competitiveness eco technology by Kai Neumann

Just a small model on the competitiveness of eco technology and the effect of regulations that demand more eco friendly technologies.  Feel free to use the model to provide a more differentiated model.

Collaborative World Model for the iBooks Readers by Kai Neumann

This is the collaborative model linked in the latest version of the interactive eBook (available from the Apple iBooks Store). Give it a try and add to it using what you have learned from the exercises from the iBook.

Matching data example - calibrating a model by Kai Neumann

While listening to a presentation on the ISDC2023 where they showed a sophisticated way of calibrating parameters of a model to real data I decided to offer a simple solution using the iMODELER's iM-Optimizer. The idea is to minimize the deviation of the model results from the real data using a range() for all variable parameters. Simple as that though of course it also has some limitations.

World economy mini model by Kai Neumann

a model for the English KNOW WHY book

Sustainable Country Medium Model by Kai Neumann

Medium size model without megatrends and a few other details