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## WHAT IS IT?

This model explores the relationship between two different models of dogs adoption ecosystems: an agent-based model and a aggregate model. Each of the models can be run separately, side-by-side for comparison.

## HOW IT WORKS

In the agent-based model, domestic and street dogs randomly roam the environment and can have the following behaviors:

- Reproduction: the dog population increases by growth rate.
- Death: a dog dies once it reaches 14 years of age.
- Adoption: is the transition of a street dog to a domestic dog that depends on the adoption rate that has the population
- Abandonment: is the transition of a domestic dog to a street dog that depends on the rate of abandonment of a population and the social conscience of its owner.

In the aggregate model is a System Dynamics model of the relationship between the variation of domestic dogs and street dogs according by the human population in Chile and the social consciousness of the people.

## HOW TO USE IT

### For aggregate model:
1. Adjust the slider parameters (see below), or use the default settings.
2. Press the SETUP button.
3. Press the GO button to begin/stop the simulation.
4. View the plots to watch the populations of domestic and street dogs fluctuate over time

### For agent model:
1. Adjust the slider parameters (see below), or use the default settings.
2. Press the SETUP2 button.
3. Press the INIT button to create dogs.
4. Press the MAIN button to begin/stop the simulation.
5. View the plots to watch the populations of domestic and street dogs fluctuate over time

### Parameters shared between agent and aggregate models:
- domestic-dog-rate: growth rate of domestic dogs
- street-dog-rate: growth rate of street dogs
- adoptions-rate: rate of adoptions
- abandonment-rate: rate of abandonment
- domestic-dog-number: number of domestic dogs
- street-dog-number: number of street dogs

### Parameters for aggregate model:
- social-conscience: social conscience of population
- static-social-conscience: boolean that allow two different behaviors:
- On: keeps the social conscience static with the parameter defined
- Off: oscillates considering that the social conscience of the people increases as time passes

## THINGS TO NOTICE

A high social conscience does not greatly influence the adoptions of street dogs.
It affects more considerably to the non-abandonment of domestic dogs.

Most of the street dogs had an owner previously. They were abandoned.

## THINGS TO TRY

### Change the "adoptions-rate" manually
When the program is running, move the "adoptions-rate" slider and see how "plot aggregate model" and "adoptions vs abandonment" behave. Or the "plot agent model" as appropriate.

## EXTENDING THE MODEL

### For aggregate model:
Make the adoption rate dependent on the social conscience.

### For agent model:
It could generate a dynamic of growth or decrease of the dogs depending on whether they are in the same patch.

You could also simulate the owners of the dogs, that each one has a percentage of social conscience. If they find an abandoned dog in the same patch, an adoption can be made. Or on the other hand, if you have a low social conscience the owner can leave your dog or the puppies of this.

## CREDITS AND REFERENCES

1. http://countrymeters.info/es/Chile
2. http://www.fundacion-affinity.org/perros-gatos-y-personas/busco-una-mascota/las-cifras-del-abandono-de-perros-y-gatos-aun-lejos-de
3. https://www.affinity-petcare.com/vetsandclinics/animales-abandonados-adoptados-conoces-numero
4. http://www.fundacion-affinity.org/perros-gatos-y-personas/busco-una-mascota/las-razones-detras-del-abandono-de-una-mascota
5. http://www.t13.cl/noticia/actualidad/perros-callejeros-las-cifras-de-un-problema-de-larga-data
6. http://santiagotimes.cl/2016/11/05/perros-callejeros-de-la-responsabilidad-ciudadana-a-las-politicas-publicas/
7. https://www.diarioconcepcion.cl/pais/2017/12/07/ley-cholito-gobierno-elimina-articulos-cuestionados-y-amplia-plazo-para-recibir-observaciones.html

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