Required Software

To open these agent models, you will need either Agent Cubes downloaded or an account. If you have an account, you can upload it to the online client.

Each model links to a page with three options: Play, Design, and Edit. You can also copy it in system management.

To start the model, click "Play". To stop the model, click the AgentCubes logo in the top right corner.

Model 1: The Fish and Some Causes of Death

In this model, there are multiple types of fish - healthy fish, infected fish, fish that are dying of natural causes and fish that were caught. The healthy fish have a 20% chance of catching the disease if they come in contact with an infected fish and a 30% of dying if they come too close to the fish that died of natural causes. The caught fish do not interact with the other ones.

The ocean is represented by blue squares. The healthy fish are represented by the yellow squares, the infected fish are represented by the black squares, the fish that are dying of natural causes are represented by the red squares and the caught fish are represented by the grey squares.

If the rate of infection increases, the number of infected fish goes up more quickly. If the rate of death increases, the number of dead fish go up. Finally, if there are more fish in the start, the numbers in the long run don't really change - there might be more infected and dead fish but the number of healthy fish still ends up dying out.

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Model 2: The Fish and More Interactions

In this model, there are still multiple types of fish - healthy fish, infected fish, fish that are dying of natural causes and fish that were caught. The healthy fish have a 20% chance of catching the disease if they come in contact with an infected fish and a 30% of dying if they come too close to the fish that died of natural causes. If any fish gets too close to where fish are caught, they have a 30% chance of getting caught themselves.

The ocean is represented by blue squares. The healthy fish are represented by the yellow squares, the infected fish are represented by the black squares, the fish that are dying of natural causes are represented by the red squares and the caught fish are represented by the grey squares.

If the rate of infection increases, the number of infected fish goes up more quickly. If the rate of death increases, the number of dead fish go up. If the catch rate increases, the number of gray fish increases with the loss of healthy and dead fish. If the number of dead/caught fish is increased at the start, there is a greater chance for a healthy fish to die. The same goes for an increase in the number of infected fish.

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Model 3: Reproduction and Death

In this model, the types of fish remain - healthy, infected, dying due to natural causes and caught fish. The fish die out and disappear after a while. The healthy fish also reproduce after a while - infected fish do not reproduce.

The ocean is represented by blue squares. The healthy fish are represented by the yellow squares, the infected fish are represented by the black squares, the fish that are dying of natural causes are represented by the red squares and the caught fish are represented by the grey squares. Nothing new here.

If the rate of infection increases, the number of infected fish goes up which overall leads to a smaller population. If the dying rate increases, a similar effect occurs. This also happens with the chance of being caught but to a greater effect (as all types of fish can be caught). The lower the amount of time needed to have the chance to reproduce, the faster the healthy fish population grows. The higher the reproduction rate itself, the larger the population of healthy fish goes..

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