System Dynamics Pitfalls and Pointers

Assuring Integrity of Units Used In Models

Building sound models demands units be assigned reliability and consistently through every stage of construction. Regardless of how tempting and expeditious it might initially appear to build models without assigning units, dimensionless models should be avoided. Powersim Studio has been designed to assure consistent assignment of units at every stage of construction. Even for an experienced modeller, it may not be always clear what units are to be assigned at a particular stage of construction. However, there are some simple techniques which enable us to determine which units are to be used.
     The following explains how to assure the integrity of units used in system dynamics models .

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