Search found 10 matches

by "Andy Ford"
Fri Feb 21, 2003 11:20 am
Forum: SD Mailing List Archive
Topic: attractivenss multiplier
Replies: 6
Views: 13182

attractivenss multiplier

This is Andy Ford responding to Daniel Jaroshs inquiry about "common practice" for simulating choice among multiple products with several attributes such as price, color, etc. When facing discrete choices among alternatives with differing attributes (which can not all be translated into eq...
by "Andy Ford"
Tue Oct 08, 2002 2:25 pm
Forum: SD Mailing List Archive
Topic: Game Theory and System Dynamics
Replies: 4
Views: 11685

Game Theory and System Dynamics

Folks, This is Andy Ford responding to Zena Abrahams question about game theory and system dynamics modeling. Dong-Hwan Kim and Doa Hoon Kim write about a system dynamics model of car drivers and the policemen that issue traffic violations in the Spring 1997 issue of the SYSTEM DYNAMICS REVIEW. They...
by "Andy Ford"
Mon Sep 16, 2002 9:28 am
Forum: SD Mailing List Archive
Topic: Models of volunteerism in non profits
Replies: 2
Views: 6514

Models of volunteerism in non profits

Folks, This is Andy Ford replying to Steven Rodericks inquiry about modeling of volunteer groups. Steve is specifically interested in a church that is suffering from a high degree of volunteer burnout. He says there are several population cohorts moving through the system, with burnout occurring pri...
by "Andy Ford"
Mon Jun 24, 2002 12:14 pm
Forum: SD Mailing List Archive
Topic: Models with Sectors and Multiple Authors
Replies: 11
Views: 15146

Models with Sectors and Multiple Authors

This is Andy Ford responding to Jim Hines questions about the coordination of a team effort to expand a "mini" model. I can share my experiences based on a long running project to develop a model of the electric power system in the Pacific Northwest. The team was comprised of model "d...
by "Andy Ford"
Wed Jun 19, 2002 8:43 am
Forum: SD Mailing List Archive
Topic: Models with Sectors and Multiple Authors
Replies: 11
Views: 15146

Models with Sectors and Multiple Authors

Jim, This is Andy Ford responding to Jim Hines question about how to put a team of people to work effectively on a large model without assigning a different person to each "sector" of the model. Jim is properly worried that the final assembly of the sectors will be difficult and confusing....
by "Andy Ford"
Mon Jul 16, 2001 10:39 am
Forum: SD Mailing List Archive
Topic: Electricity Regulation/Deregulation
Replies: 7
Views: 11122

Electricity Regulation/Deregulation

Misunderstandings on System Dynamics & Electricity Deregulation: I have been watching the discussion thread on electricity deregulation with great curiosity, wondering where an electronic discussion might take us. My own research focuses on the west coast electric system and the use of system dy...
by "Andy Ford"
Sat Apr 07, 2001 10:43 am
Forum: SD Mailing List Archive
Topic: Looking for a Fast Demonstration of Complex Behavior
Replies: 5
Views: 5486

Looking for a Fast Demonstration of Complex Behavior

Niall, James Gleick, the author of the best-seller on "Chaos: Making a New Science" had an interesting demo to open a speech on the science of complexity. (The speech was in Santa Fe, New Mexico so he had a receptive audience.) He was greeted with vigorous applause. When the applause died ...
by "Andy Ford"
Fri Mar 16, 2001 10:22 am
Forum: SD Mailing List Archive
Topic: Coastal Zone Management
Replies: 2
Views: 3279

Coastal Zone Management

Rolph, Back in the 1970s, I was using system dynamics to simulate "boom town" impacts from rapid development in rural areas. The DOE and the Los Alamos lab were interested in socio-economic problems in the Rocky Mountain West that might attend rapid development of energy resources. Boom to...
by "Andy Ford"
Tue Feb 27, 2001 9:13 am
Forum: SD Mailing List Archive
Topic: Discrete simulation in system dynamics models
Replies: 1
Views: 2748

Discrete simulation in system dynamics models

Roland Schiefer describes a SD model of a predator prey system, followed by a discrete simulation. Portions of his Feb 27th message are listed below: ====================== > Assume we want to simulate a simple prey-predator system that can be > described by the differential equations of Lottke and ...
by "Andy Ford"
Thu Jul 20, 2000 7:28 am
Forum: SD Mailing List Archive
Topic: Cropping patterns and groundwater resource use
Replies: 3
Views: 4383

Cropping patterns and groundwater resource use

Fadil Rida, This is Andy Ford replying to your question about system dynamics research on farmer investments and ground water use. We did some work several years ago on this topic in the Snake River Basin of southern Idaho. We assembled a team from WSU, the Rocky Mountain Institute and the INEEL -- ...