Ventana software support forum

Posted by Khalid Saeed <saeed@WPI.EDU> Hazhir, Many years ago, one of my industrial engineering students attempted this by building the objective function and the constraints into the decision rules. as I recall, the optimal solution occurred when this system came to an equilibrium. I am not sure if...

Posted by Khalid Saeed <saeed@wpi.edu> Let me first of all thank you all for the responses. Jack, I do not know the root cause yet, but am trying to formulate a hypothesis. Roy and Bob point to interesting evidence and beliefs. I personally do not think we carry out a rational economic analysis for ...

Posted by Khalid Saeed <saeed@WPI.EDU> Jay’s assertion that population growth and industrial growth are the root causes for the environmental malaise should challenge us to look for a positive feedback between the two. If such a feedback exists, the entry point might be to curtail industrial growth ...

Posted by Khalid Saeed <saeed@WPI.EDU> Gary, Those are great observations, but there exists considerable variability in the performance of social services related policies. I am also not sure about the efficacy of micro-finance. I think it is a great innovation that substitutes financial collateral ...

Posted by Khalid Saeed <saeed@wpi.edu> As always, Jay's observations are most insightful. From the stand point of intervention, what can be done to reduce fertility and industrialization rates? Individuals may not voluntarily change their behavior for fear of losing their share of the commons. An in...

Posted by Khalid Saeed <saeed@wpi.edu> George, A beautiful explanation! I wish to add that policy or decision rules in system dynamics are based not on discrete decisions, but on patterns of decisions. These patterns may vary according to the time frame over which a decision pattern is observed. The...

Posted by Khalid Saeed <saeed@wpi.edu> Mike raises a good point. In my experience, using composite performance indicators in state space creates powerful graphics both for describing the problem and the model behavior in many instances. I have illustrated this graphic option in the following article...

Posted by Khalid Saeed <saeed@WPI.EDU> Barry Richmond built a simple and elegant model of Zimbardo's experiment and programmed it also as a story. I suggest contacting isee systems for a copy. Khalid Posted by Khalid Saeed <saeed@WPI.EDU> posting date Fri, 18 May 2007 12:00:08 -0400 ________________...

Posted by Khalid Saeed <saeed@WPI.EDU> Jay's refreshing comment is timely. It tells us that analysis is a means to an end, not an end in itself. Khalid Saeed Posted by Khalid Saeed <saeed@WPI.EDU> posting date Fri, 20 Apr 2007 10:37:41 -0400 _______________________________________________

Posted by Khalid Saeed <saeed@wpi.edu> We can also capitalize System Dynamics by working on big issues of the time, as Jay pointed out, and publishing our penetrating analyses and innovative policy insights. Khalid Saeed Posted by Khalid Saeed <saeed@wpi.edu> posting date Sun, 18 Mar 2007 13:31:45 -...