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ST101: Introduction to Systems Dynamics: Stocks and Flows

Bob Hawkins
This Insight has been developed as an introduction to the basics of Systems Dynamics as part of a series of models to explore the dynamics of growth and decline in a simple environment.  It is the first Insight in a series of four and the next Insight can be found
  • 1 year 4 months ago

Chaos 101: Logistic Equation

Bob Hawkins
This Insight has been set up to explore the properties of the logistics equation.  The logistics equation is a very simple model of a population where there is some limit to growth.  It is often cited as an archetypal example of how complex, chaotic behaviour can arise from very simple non-linear dy

Chaos

  • 2 years 10 months ago

Degree Day Model

Bob Hawkins
This Insight has been developed to explore the relationship between climate change and the number of heating and cooling degree days.  The model has been calibrated using data for New York that accounts for future climate change.
  • 2 years 10 months ago

ST101: Introduction to Systems Dynamics: Variables 1

Bob Hawkins
This Insight has been developed as an introduction to the basics of Systems Dynamics as part of a series of models to explore the dynamics of growth and decline in a simple environment.  It is the second Insight in a series of four.  The first Insight can be found
  • 2 years 10 months ago

ST101 Introduction to Systems Dynamics: Variables 2

Bob Hawkins
This Insight has been developed as an introduction to the basics of Systems Dynamics as part of a series of models to explore the dynamics of growth and decline in a simple environment.  It is the third Insight in a series of four.  The first Insight can be found
  • 3 years 5 months ago

ST101 Leaky Bucket Model

Bob Hawkins

Simple model of a leaky bucket with a fixed fill rate and an empty rate that is dependent on the size of the hole in the bucket and the height of water.  Can you save Guppy the fish who lives in the bucket?

Simple Model

  • 3 years 6 months ago

Daisyworld v5b

Bob Hawkins
This Insight is a model of Daisyworld created by James Lovelock in 1982 to demonstrate the central idea behind the Gaia hypotheses that life and the environment may be considered two parts of a coupled system.

Gaia Daisyworld Climate Change

  • 3 years 10 months ago

Basic Climate Model 101: Role of Oceans

Bob Hawkins
A simple Energy Balance Climate Model of the Earth with no atmosphere.  Explore the impact of changing the ocean's depth (i.e. heat capacity) and the pattern of solar radiation on the earth's temperature by using the sliders in the panel below.

Climate Model

  • 3 years 10 months ago

Basic Climate Model 101

Bob Hawkins
A simple Energy Balance Climate Model of the Earth with no atmosphere.  Explore the impact of changing solar radiation, Earths albedo, and ocean heat capacity on the Earths temperature by using the sliders in the panel below.

Climate Model

  • 3 years 10 months ago

ST101 Shower Control with Delay

Bob Hawkins
This Insight is a simple model of a sluggish shower, the classic example from Systems Thinking of a balance loop with delay. It illustrates the sometimes baffling influence that time delays can have on simple decision making tasks.

Delay Balancing Loop

  • 3 years 11 months ago