Ventana software support forum

Tom and others, My comment led to an interesting off-line discussion with George Richardson and Jim Thompson. In my mind an integral is a mathematical way of representing the algorithm of calculating the areas of small strips (from x to x+epsilon) under a curve. In system dynamics, the abscissa is u...

That was a good answer. But then, integrals don't exist in nature either,
because they also depend on our choice of scale.

Elise
From: ""Weaver, Elise A"" <eweaver@WPI.EDU>

I still say that mountain sides (i.e. slopes) are examples of derivatives
with respect to distance in the real world.

Elise
From: ""Weaver, Elise A"" <eweaver@WPI.EDU>

Hello Esteban, Your posting interested me, because I am always interested in overlaps between SD and psychology. I looked on the web, and it appears that this field you mention represents a relatively new movement among social psychologists looking at the time course of behavior. These are suggested...

Markus, I am not aware of any such SD model, but if you find one, I would be interested to know about it. There are people in SD who do dynamic decision models (e.g. Berndt Brehmer, John Sterman), but the mix of structure and process that you are looking for might sooner be found in models from Para...