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AcquaWorld

Rolf Widmer
A very simple thermodynamic model of a planet, based on first order approximations of its (black body) radiation balance and uses two heat stores (ocean and atmosphere). It includes two radiation modulating effects i.e. albedo and green house.

Climate Change Atmosphere

  • 3 weeks 1 day ago

Ex2: SIR model

Rolf Widmer

This is a simple SIR infectious diseases 3 stock model with Susceptibles, Infectives and Recovereds stocks. In the initial description the R signified Removed and could include Deaths, Recovered with immunity to infection (Resistant) or those who had fled the epidemic. Note the need to initiate the epidemic by adding a pulse of a single infected person at time 0.

Health Care Infection

  • 4 months 2 weeks ago

Clone of Ex2: SIR model

Rolf Widmer

This is a simple SIR infectious diseases 3 stock model with Susceptibles, Infectives and Recovereds stocks. In the initial description the R signified Removed and could include Deaths, Recovered with immunity to infection (Resistant) or those who had fled the epidemic. Note the need to initiate the epidemic by adding a pulse of a single infected person at time 0.

Health Care Infection

  • 4 months 2 weeks ago

Clone of An interactive walkthrough of the SIR model

Rolf Widmer

This is a simple SIR infectious diseases 3 stock model with Susceptibles, Infectives and Recovereds stocks. In the initial description the R signified Removed and could include Deaths, Recovered with immunity to infection (Resistant) or those who had fled the epidemic. Note the need to initiate the epidemic by adding a pulse of a single infected person at time 0.

Health Care Infection

  • 4 months 3 weeks ago

Common System Designs (Bice)

Rolf Widmer
Case A: 1st order system: linear growth&decayCase B: 1st ... exponential growth&decayCase C: 1st ... S-shape growth&decay (non linear!)
Case C1: 2nd order system: overshoot-collapseCase C2: 2nd ... oscillation a)..., b) damped, c) ...

PEA

  • 1 year 5 months ago