利润 (Profit model in chinese) by Daoen Pan

这是一个有关公司如何增加利润的模型。“市场营销”，“员工激励”，“削减预算“等等方法和措施将对公司的短期，中期和长期利润产生直接或者间接的影响。 This mode is based on Profit (qualitative and quantitative model) from Franc Grimm.

Mini Model by whom? by naddicott@d*

Feed the world - qualitative model on the arguments by Kai Neumann

I was recently preparing my contribution to the  System Dynamics Conference presenting our comprehensive quantitative GLU Model (global land use). At the same time I am repeatedly  confronted with the argument that in order to save the world we need industrialized farming with the use of pesticides, fertilizer, and high precision farming, because otherwise we would not have enough yields to feed the world and thus would need more deforestation. Well, while the quantitative model shows that without major ...

Quantitative model for the recycling of paper (with stocks) by Kai Neumann

Small exercise to model recycling of paper It can be used for glass or plastics as well. A scenario could be that there is a short term increase of demand or a extraordinarily low price so a paper mill decides to buy more wood which will with a delay lead to more recycled paper and a possible overproduction unless the purchase of wood is lowered again.

Mini Model on Green Investments by Kai Neumann

a very small model showing the major levers as they turned out in larger models on know-why.net

Meeting Model by frahm@k*

Altes Bessere Welt Modellchen by Kai Neumann

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.

Sustainable Country Medium Model by Kai Neumann

Medium size model without megatrends and a few other details