Unexpected Behaviors in Higher- Order Positive Feedback Loops
Order Positive Feedback Loops - Creative Learning Exchange
Order Positive Feedback Loops - Creative Learning Exchange
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36 D-4455-220-2A(0)=1Graph of Destabiliz<strong>in</strong>g Susta<strong>in</strong>ed OscillationsB(0)=-11234D(0)=0C(0)=.00112340 1 2 3 4 5 6 7 8 9 10 11 12Time (none)1234A: -------------------------------------------------- 111 unitsB: --------------------------------------------------2 22units333C: -------------------------------------------------- 44 4 unitsFigure 25: Vensim Equivalent of Figure 12: Susta<strong>in</strong>ed oscillations destabiliz<strong>in</strong>g toexponential growth (fourth-order positive feedback loop).
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