Examples tagged with population

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adaptiveauctionbalancing-loopbottleneckcapacitycellular-automatacompeting-contagioncontroldebtdecaydiscrete-eventecosystemexponentialfact-checkfairnessfirst-order-dynamicsgamegame-theorygameplaygoalgridhealthcareincentiveinterruptslearningmaintenancemanagementmatchmakingmonitoringnonlinear-dynamicspopulationprioritizationpriorityqueuequota-policyrandomreinforcementreinforcing-loopreliabilityrenewable-resourceresource-managementrumorservicesimpysocial-networkstochasticstocks-flowssustainabilitythroughputtime-delaywaiting-gameworkflow
Beginner - Introductory Models

Fishery Simulation

A fishery simulation of stocks, flows, and feedback loops managing fish populations.

Level:Beginner

populationresource-managementsustainabilitymanagementecosystemstocks-flowsreinforcing-loopbalancing-looprenewable-resourcequota-policy

  • Stocks:population
  • Flows:births, quota
  • Feedback Loops:reproduction (reinforcing), quota (balancing)
  • Probes:population, quota, gap_to_capacity, extracted_total
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Logistic Growth

A logistic growth simulation of population increase with saturation.

Level:Beginner

populationcapacitynonlinear-dynamicsreinforcing-loop

  • Stocks:population
  • Flows:growth
  • Feedback Loops:reinforcing adoption, saturation constraint
  • Probes:population, growth
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Intermediate - Classic Dynamics

Predator-Prey (Lotka–Volterra, SciPy)

A predator-prey simulation using the Lotka-Volterra equations.

Level:Intermediate

populationecosystemnonlinear-dynamics

  • Stocks:prey, predator
  • Flows:prey_births, predations, predator_deaths
  • Feedback Loops:predation cycle
  • Probes:prey, predator
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Predator-Prey (Lotka–Volterra, SimPy)

Discrete-time SimPy approximation of the predator–prey model.

Level:Intermediate

populationecosystemnonlinear-dynamics

  • Stocks:prey, predator
  • Flows:prey_births, predations, predator_deaths
  • Feedback Loops:predation cycle
  • Probes:prey, predator
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SIR Model with Vaccination

An SIR vaccination simulation modeling epidemics with optional vaccination.

Level:Intermediate

populationreinforcing-loopbalancing-loopcontrol

  • Stocks:susceptible, infected, recovered
  • Flows:infections, recoveries, vaccinations
  • Feedback Loops:disease spread (reinforcing), herd immunity (balancing)
  • Probes:susceptible, infected, recovered
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Advanced - Complex Simulations

Logistic Map

A logistic map simulation that iterates x_{n+1}=r*x_n*(1-x_n) to illustrate chaos.

Level:Advanced

populationnonlinear-dynamics

  • Stocks:x
  • Feedback Loops:growth with self-limiting term
  • Probes:x
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