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System Dynamics Models

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Explore What Others Are Building

Here is a sample of public Insights made by Insight Maker users. This list is auto-generated and updated daily.

Safira Husnun Naza / 25/572327/PTK/17000

Model Dilantin yang dimodifikasi menjadi two-compartment repeated dose dengan kompartemen pencernaan dan plasma. Simulasi menunjukkan pola absorpsi dari pencernaan ke plasma serta konsentrasi plasma yang berada dalam rentang terapi.

Model Two-Compartment Repeated Dose Dilantin

Safira Husnun Naza

5 days ago

Goodwin cycle IM-2010 with debt and taxes added, modified from Steve Keen's illustration of Hyman Minsky's Financial Instability Hypothesis "stability begets instability". This can be extended by adding the Ponzi effect of borrowing for speculative investment.

Minsky Financial Instability Model

Geoff McDonnell

Spring, 2020: in the midst of on-line courses, due to the pandemic of Covid-19.

With the onset of the Covid-19 coronavirus crisis, we focus on SIRD models, which might realistically model the course of the disease.

We start with an SIR model, such as that featured in the MAA model featured in

https://www.maa.org/press/periodicals/loci/joma/the-sir-model-for-spread-of-disease-the-differential-equation-model

Without mortality, with time measured in days, with infection rate 1/2, recovery rate 1/3, and initial infectious population I_0=1.27x10-4, we reproduce their figure

With a death rate of .005 (one two-hundredth of the infected per day), an infectivity rate of 0.5, and a recovery rate of .145 or so (takes about a week to recover), we get some pretty significant losses -- about 3.2% of the total population.

Resources:

http://www.nku.edu/~longa/classes/2020spring/mat375/mathematica/SIRModel-MAA.nb
https://www.maa.org/press/periodicals/loci/joma/the-sir-model-for-spread-of-disease-the-differential-equation-model

Coronavirus: A Simple SIR (Susceptible, Infected, Recovered) with death

Andrew E Long

There is much we can learn from the development of qualitative relationships models though once we begin to ask questions like how long, how much, when, etc., a qualitative most is not likely to be of much use. The following video demonstrates how, in a very simple goal-seeking structure with delay, depending on the delay, it can be almost impossible to intuit the implications of the interactions with any level of accuracy. The difficulty arises essentially from operating with outdated data. See also Archetypes.

Video

This model is part of

And? Understanding Relationships & Their Implications.

Goal Seeking with Delay

Gene Bellinger

A visual look at using technology in school based on the article:

Levin, B. B., & Schrum, L. (2013). Using systems thinking to leverage technology for school improvement: Lessons learned from award-winning secondary Schools/Districts. Journal of Research on Technology in Education, 46(1), 29-51.

Using Systems thinking for technology in education

Rob koch

Alza Syauqi Billah Ghifari
23/528902/PTK/15592

Model the concentration in the body of the drug Dilantin, a treatment for epilepsy that the patient takes on a regular basis.

Two-compartment Model of Repeated Dose (Dilantin)

Alza Syauqi Billah Ghifari