#### Chaotic Bistable Oscillator

##### Geoff McDonnell ★

Z205 from System Zoo 1 p95-98

- 4 years 2 weeks ago

#### Z602 Population with four age groups

##### Joe Van Steen

Population model where the population is summarized in four age groups (children, parents, older people, old people). Used as a base population model for dealing with issues such as employment, care for the elderly, pensions dynamics, etc.

- 3 years 5 months ago

#### Balancing an Inverted Pendulum PCT Model

##### Geoff McDonnell ★

Perceptual Control Theory Model of Balancing an Inverted Pendulum. See Kennaway's slides on Robotics. as well as PCT example WIP notes. Compare with IM-1831 from Z209 from Hartmut Bossel's System Zoo 1 p112-118

- 6 years 1 month ago

#### Dependence

##### Geoff McDonnell ★

This models the progressive decline of the ability for self-reliance and the growing dependence on outside help. Z508 p39-42 System Zoo 3 by Hartmut Bossel. Strong outside help causes a collapse of self-help capacity. Weak outside help produces a stable combination of wellbeing and self-help capacity.

- 9 months 2 weeks ago

#### Competition for Resources

##### Geoff McDonnell ★

Exploring the conditions of permanent coexistence, rather than gradual disappearance of disadvantaged competitors. Z506 p32-35 System Zoo 3 by Hartmut Bossel.

Health Care Social Psychology System Zoo Self Population Competition

- 3 years 2 months ago

#### Balancing an Inverted Pendulum

##### Geoff McDonnell ★

Z209 from Hartmut Bossel's System Zoo 1 p112-118. Compare with PCT Example IM-9010

- 4 years 2 weeks ago

#### Rossler Chaotic Attractor

##### Geoff McDonnell ★

Z207 from Hartmut Bossel System Zoo 1 p103-107

After running the default settings Bossel describes A=0.2, B=0.2, Initial Values X=0 Y=2 and Z=0 and varying C=2,3,4,5 shows period doubling and transition to chaotic behavior

- 2 years 6 months ago

#### Bipolar II dynamics

##### Eduardo Enrique Escamilla

In this simulation an afflicted individual with Bipolar II disorder is put to treatment after 20 months the calibration of the medicine or treatment he recieves is such that it simulates the natural cycles of a "normal being". You can note by manipulating the parameters that sometimes too much treatment disrupts equilibria. Also note that in the state diagrams there are 2 limit cycles, the lower one being the healthiest as there are less changes.

- 6 years 7 months ago

#### Rotating Pendulum

##### Geoff McDonnell ★

Rotating Pendulum Z201 from System Zoo 1 p80-83

- 2 years 8 months ago

#### Aggression

##### Geoff McDonnell ★

An exploration of interactions among 'fuzzy' qualitative concepts that interact to produce either tolerance or violent conflict. Z509 p43-49 System Zoo 3 by Hartmut Bossel.

Health Care Social Psychology System Zoo Self Emotion Violence

- 4 years 2 weeks ago

#### Escalation

##### Geoff McDonnell ★

Attempting to outdo an opponent leads to escalation. A weaker response leads to De-escalation. A slightly more complex form of Insight 972. Z508 p36-38 System Zoo 3 by Hartmut Bossel.

- 4 years 2 weeks ago

#### [WIP] Z602 Population with four age groups, Czech Republic

##### Filip Hracek

Population model where the population is summarized in four age groups (children, parents, older people, old people). Used as a base population model for dealing with issues such as employment, care for the elderly, pensions dynamics, etc.

- 1 year 11 months ago

#### Z605 Miniworld

##### Alain Plante

- 5 years 5 months ago

#### Brusselator

##### Geoff McDonnell ★

- 4 years 2 weeks ago

#### Density Dependent Growth (Michaelis-Menten)

##### Geoff McDonnell ★

System Zoo Z111 H Bossel p47 a variant of Michaelis Menten Enzyme Kinetics. See also IM-854 for Hannon and Ruth and IM-855 for receptor version and IM-856 for a bond graph view

- 3 years 4 months ago

#### Bistable Oscillator

##### Geoff McDonnell ★

- 6 years 11 months ago

#### System Zoo Z103: Exponential growth and decay

##### Ash Moran ★

- 6 years 11 months ago

#### System Zoo Z112: Double integration and exponential decay

##### Ash Moran ★

System Zoo Z112: Double integration and exponential decay from System Zoo 1 by Hartmut Bossel

- 6 years 11 months ago

#### Van der Pol Oscillator

##### Geoff McDonnell ★

- 6 years 11 months ago

#### System Zoo Z104: Exponential delay

##### Ash Moran ★

- 6 years 11 months ago

#### System Zoo Z109 ex 6: Whale population

##### Ash Moran ★

System Zoo Z109: Logistic growth with constant harvest from System Zoo 1 by Hartmut Bossel

Exercise 6 simulates a whale poplutation with a minimum reproductive capacity

- 6 years 11 months ago

#### System Zoo Z110: Logistic growth with stock-dependent harvest

##### Ash Moran ★

System Zoo Z110: Logistic growth with stock-dependent harvest from System Zoo 1 by Hartmut Bossel

- 6 years 11 months ago

#### System Zoo Z107: Infection dynamics

##### Ash Moran ★

- 6 years 11 months ago

#### System Zoo Z111: Density-dependent growth (Michaelis-Menten)

##### Ash Moran ★

- 6 years 11 months ago