A model of the German FIT program, to develop understanding of the program and its implications. Specifically, we'll ask the questions: 1. What is the impact of the FIT program on Installed Solar Capacity 2. What is the impact of the FIT program on the size of the solar installation and maintenance industry base 3. What is the impact of the FIT program on the long term unsubsidized Cost per Watt of solar power

Practice Solar

A demonstration of the system dynamics modeling paradigm using rabbits as a simple stock, and their breeding and life expectancy as simple flows.

Practice

This model seeks to answer the question 'Why do two people sometimes walk straight into each other, despite deliberate attempts to walk around each other?'

Practice Humorous

Practice

​I observed one night a candle burning brightly, then dimming, then building again and burning brightly, with a period of about 30 seconds. I observed the oscillations for a few minutes and thought to myself: Delayed Feedback. 

Not all candles do that, so why did this one? The wick had folded over on itself such that the volume of the wick compared to its evaporative surface was high. Additionally, the cross sectional area of the wick at the level of the wax puddle was still rather low. 

My hypothesis is that the small cross sectional area of the wick meant that it could only soak up so much wax at a time, and so constituted a delay. The folded top of the wick was a reservoir that was involved in a positive feedback - the hotter the flame, the more wax evaporated from it, and the hotter the flame burned. When the reservoir in the wick was depleted, it needed to wait until the wicking action recharged it.

Practice

Managing your office coffee supply.

Practice

A model of the German FIT program, to develop understanding of the program and its implications. Specifically, we'll ask the questions: 1. What is the impact of the FIT program on Installed Solar Capacity 2. What is the impact of the FIT program on the size of the solar installation and maintenance industry base 3. What is the impact of the FIT program on the long term unsubsidized Cost per Watt of solar power

Practice Solar

Managing your office coffee supply.

What happens when the demand is not even?

Practice

Practice

Why is it noisy in a bar, but quiet in a coffee shop?

Practice

Practice for learning Insight software.

Practice

This is a template for collaborative model building, which explains a little bit about the modeling process to get everyone up to speed on what we're doing and why we're doing it.

Practice Template

Practice

Practice building first models - essence 1

Practice

Practice

A physics simulation of bathtub dynamics, for practicing using insight maker.

Practice

Great learning going through this model to adjust and change initial values and flow rate equations

Disease Dynamics Practice

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yOLO

Practice

Exploring the model

Practice