Search found 10 matches

by Nelson Repenning
Tue Jul 24, 2001 9:36 am
Forum: SD Mailing List Archive
Topic: Human Behavior in System Dynamics Models
Replies: 9
Views: 11101

Human Behavior in System Dynamics Models

Contrary to some earlier statements, there is ample evidence that SD can be used to model exactly the issues referred to below. All of this comes, however, with one important caveat that I think is the source of confusion: Paraphasing an early statement by Professor Forrester, SD can be used to mode...
by Nelson Repenning
Tue Jun 27, 2000 10:56 am
Forum: SD Mailing List Archive
Topic: SD Humour
Replies: 10
Views: 11645

SD Humour

>>How many system dynamicists does it take to screw in a lightbulb? I think this question is best understood by considering how some of the great members of the field might tackle the question: The Pugh-Roberts folk might develop a sophisticated model to predict when the bulbs would burn out. Ventan...
by Nelson Repenning
Mon Jun 26, 2000 11:16 am
Forum: SD Mailing List Archive
Topic: The Reality of the Beer Game
Replies: 6
Views: 7117

The Reality of the Beer Game

I dont think anybody claims that the beer game captures the dynamics normally associated with brewery supply chains. I believe it has it origin in Professor Forresters initial studies of General Electrics difficulties with instability in its refrigerator manufacturing plants. In fact the game was or...
by Nelson Repenning
Thu Jan 27, 2000 10:23 am
Forum: SD Mailing List Archive
Topic: New Methodology diffusion
Replies: 5
Views: 5151

New Methodology diffusion

You also might find the following useful, Repenning, N. (1999). A Simulation-Based Approach to Understanding the Dynamics of Innovation Implementation. Working Paper. which can be downloaded at http://web.mit.edu/nelsonr/www/Success.html hope this helps, nelson From: Nelson Repenning <nelsonr@MIT.EDU>
by Nelson Repenning
Wed Dec 08, 1999 9:41 am
Forum: SD Mailing List Archive
Topic: self optimization
Replies: 4
Views: 12476

self optimization

I have a PhD student, John Foster, working on this problem. He is trying to develop a fully behavioral model of how somebody might solve such an optimization problem. It turns out to be quite a hard problem and we could not find a formulation in the existing literature that really captured it. Many ...
by Nelson Repenning
Tue Oct 26, 1999 10:05 am
Forum: SD Mailing List Archive
Topic: Negative Levels
Replies: 9
Views: 11588

Negative Levels

>Id go a step further than Jim Hines and run the risk of distressing my >friend Geoff by suggesting that one should almost never write the >MIN(Level/DT,...) equations he offers. Ill even go a step further than george. While I completely agree with Georges discussion that a table function would be p...
by Nelson Repenning
Fri Nov 20, 1998 12:21 pm
Forum: SD Mailing List Archive
Topic: Transition problem in product development
Replies: 1
Views: 7273

Transition problem in product development

SD List members,

a number of you have pointed out to me that the paper actually will not
download at the moment. I am in the process of trying to fix this.

Sorry for the problems,

Nelson
From: Nelson Repenning <nelsonr@MIT.EDU>
by Nelson Repenning
Thu Nov 19, 1998 9:48 am
Forum: SD Mailing List Archive
Topic: Transition problem in product development
Replies: 1
Views: 7273

Transition problem in product development

SD List members: After my talk, The Transition Problem in Product Development, at the SD conference this summer, a number of people expressed interest in the associated paper and model. At long last these are now available if you point your browswer to the following address http://web.mit.edu/nelson...
by Nelson Repenning
Fri Apr 10, 1998 9:29 am
Forum: SD Mailing List Archive
Topic: Professional Accreditation
Replies: 15
Views: 30004

Professional Accreditation

Some more thoughts on Accreditation: First, let met try to point out the bias I am bringing to this issue. I have a degree in System Dynamics and my current livelihood depends on other people also wanting to get such degrees, so it should fairly obvious where my preferences lie. Given that here are ...
by Nelson Repenning
Tue Apr 07, 1998 8:09 am
Forum: SD Mailing List Archive
Topic: Professional Accreditation
Replies: 15
Views: 30004

Professional Accreditation

Some Thoughts On Professional Accreditation, Jay Forrester has often framed system dynamics as a profession similar to engineering or medicine which requires a combination of academic training, experience, and apprenticeship. Following this model, accreditation might be appropriate since there are s...