System Dynamics Modules

First Order Non-Linear Self-Referencing

This module combines the functionality of the First-Order Positive-Feedback Self-Referencing and First-Order Negative-Feedback Self-Referencing modules. The descriptions of each of those modules apply. When First-Order Positive-Feedback Self-Referencing and First-Order Negative-Feedback Self-Referencing modules are combined we see that regardless of the initial population, the integrated module produces behaviour which results in ‘S’ STATE OF THE SYSTEM tending towards the Maximum Possible Value of ‘S’. As that value is approached, either from below or from above (depending on the initial value of ‘S’) the value of Multiplier Based on Actual ‘S’ Divided by Maximum ‘S’ returns a value which controls the values of Flowing In and Flowing Out. The result is a strong tendency towards the Maximum Possible Value of ‘S’. Feedback loop dominance depends on the initial conditions.
     The description of the module is at .
     The description of the Powersim Studio module is at .
     The module coded in Powersim Studio is at .

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