Search found 117 matches
- Wed Dec 29, 1999 10:01 pm
- Forum: SD Mailing List Archive
- Topic: Job Opening at Darden
- Replies: 0
- Views: 9386
Job Opening at Darden
****** Folks, Im forwarding this job opening at the Darden School, at the U. of Va. Darden has been teaching system dynamics for some time (note the inclusion of dynamic systems among the list of teaching areas). John Sterman From: John Sterman <jsterman@MIT.EDU> From: "Bodily, Sam" <Bodil...
- Thu Dec 23, 1999 10:15 am
- Forum: SD Mailing List Archive
- Topic: Resource allocation models
- Replies: 28
- Views: 41248
Resource allocation models
The discussion on formulations for the allocation of resources to multiple customers has been interesting; thanks to all for useful contributions. The focus of the discussion has often been finding a parsimonious formulation (defined as one you can explain successfully to your client) that meets var...
- Tue Nov 30, 1999 9:33 am
- Forum: SD Mailing List Archive
- Topic: ICCS:International Conference on Complex Systems CFP
- Replies: 1
- Views: 16458
ICCS:International Conference on Complex Systems CFP
Folks, FYI - this conference may be of interest. John Sterman jsterman@MIT.EDU >List-Unsubscribe: <mailto:complex-announcements-off@necsi.org> >Reply-To: <complex-announcements@necsi.org> (Announcements of Complex >Systems Related Activities) >Sender: <complex-announcements@necsi.org> (Announcements...
- Thu Nov 11, 1999 5:46 pm
- Forum: SD Mailing List Archive
- Topic: Workshop "Economic Dynamics from the Physics Point of View"
- Replies: 0
- Views: 10561
Workshop "Economic Dynamics from the Physics Point of View"
Forwarded by John Sterman <jsterman@MIT.EDU> >Subject: Workshop "Economic Dynamics from the Physics Point of View" > > Please distribute this announcement to interested collegues. > We apologize for multiple postings! >______________________________________________________________________ ...
- Thu Nov 11, 1999 2:06 pm
- Forum: SD Mailing List Archive
- Topic: Viridian Climate Modelling
- Replies: 0
- Views: 9733
Viridian Climate Modelling
Folks, The following message, forwarded by Alan AtKisson to the Balaton Group (founded by Dana and Dennis Meadows, a group of folks committed to creating a sustainable world), describes a terrific idea for distributed modeling. The same concept is being used to factor large numbers for codebreaking,...
- Mon Sep 20, 1999 10:43 am
- Forum: SD Mailing List Archive
- Topic: Post Doctoral Fellowship at Stanford
- Replies: 0
- Views: 9702
Post Doctoral Fellowship at Stanford
Forwarded by John Sterman: >POSTDOCTORAL FELLOWSHIP IN COMPUTER SIMULATION MODELING > AND MEDICAL DECISION ANALYSIS > > Stanford University School of Medicine > Stanford, California > >Join a multidisciplinary research team investigating the burden of breast >cancer in the United States and the prom...
- Mon Jun 28, 1999 8:49 am
- Forum: SD Mailing List Archive
- Topic: Call for Papers: Before and After Studies of Y2K
- Replies: 0
- Views: 2213
Call for Papers: Before and After Studies of Y2K
>Date: Fri, 25 Jun 1999 11:40:03 -0400 (EDT) >From: "Stuart A. Umpleby" <umpleby@gwis2.circ.gwu.edu> >To: John Sterman <jsterman@MIT.EDU> >Subject: Call for Papers: Before and After Studies of Y2K (fwd) >Mime-Version: 1.0 > >Prof. Sterman, Would you please forward this to the system dynami...
- Wed May 26, 1999 6:28 am
- Forum: SD Mailing List Archive
- Topic: Announcing a new software for supply chain dynamics ...
- Replies: 0
- Views: 2322
Announcing a new software for supply chain dynamics ...
Folks, The following message from Ravi Anupindi at Kellogg (Northwestern) describes a new web-based Beer Game and their experience with it in the MBA core operations management class there. Its a promising alternative to the board game for those with access to the internet. John Sterman From: John S...
- Fri Mar 19, 1999 10:08 am
- Forum: SD Mailing List Archive
- Topic: Discrete Event Simulation v. System Dynamics
- Replies: 13
- Views: 10678
Discrete Event Simulation v. System Dynamics
Bill Harris is right - the essence of system dynamics is the feedback perspective. The assumption of continuous flows is a modeling approximation, useful for many but far from all problems and model purposes. It is perfectly possible and often done to incorporate feedback processes in discrete simul...
- Mon Jan 04, 1999 10:39 pm
- Forum: SD Mailing List Archive
- Topic: Jay W. Forrester Award: Call for Nominations
- Replies: 0
- Views: 2393
Jay W. Forrester Award: Call for Nominations
******* CALL FOR NOMINATIONS ******* The System Dynamics Society solicits nominations for the 1999 Jay Wright =46orrester Award. The Jay Wright Forrester Award is presented as often as once annually for the best contribution to the field of system dynamics published in the preceding five years. The ...
- Mon Dec 14, 1998 9:55 am
- Forum: SD Mailing List Archive
- Topic: SD-modeling tools vs. Spreadsheets
- Replies: 5
- Views: 16217
SD-modeling tools vs. Spreadsheets
I fully endorse Georges comments on the difficulties of spreadsheets for dynamic modeling. But there are other pragmatic reasons not to do this as well. While it is possible to represent a system dynamics model in excel, I strongly advise against it. Properly capturing feedbacks and stock-flow struc...
- Thu Oct 22, 1998 9:55 am
- Forum: SD Mailing List Archive
- Topic: Article of interest
- Replies: 4
- Views: 9932
Article of interest
I highly recommend that people read the article by Erling Moxnes entitled "Not Only the Tragedy of the Commons: Misperceptions of Bioeconomics" which appeared in Management Science, 44(9), Sept. 98 (1234-1248). Erling conducted a lab experiment with a simulated fishery in which the decisio...
- Fri Jul 24, 1998 9:23 am
- Forum: SD Mailing List Archive
- Topic: Climate Change and SD
- Replies: 1
- Views: 3149
Climate Change and SD
George Backus is right about the need for multiple models of the climate change problem (and any other problem for which the uncertainty and stakes are high). The implications go beyond what George suggests. In addition to recognizing that no one model is sufficient, the various models must be made ...
- Sun Jul 05, 1998 10:24 am
- Forum: SD Mailing List Archive
- Topic: Energy 2020
- Replies: 11
- Views: 30163
Energy 2020
In SD 1526 Roberto Vacca analyzes trends in global CO2 concentrations by fitting a logistic curve to the Keeling et al. Mauna Loa CO2 data. As is often the case with data showing exponential-like growth, the equation fits reasonably well. Roberto finds a good fit with an asymptote of 400 ppm CO2. He...
- Mon May 11, 1998 11:57 am
- Forum: SD Mailing List Archive
- Topic: Reinvestment Models
- Replies: 1
- Views: 2558
Reinvestment Models
Jack Homer developed a model directly applicable to this issue. The model significantely extended Forresters Urban Dynamics model to include gentrification and reinvestment in mature neighborhoods, insurance redlining, and even arson for profit. The model was calibrated and tested against data for t...
- Mon Oct 27, 1997 8:29 am
- Forum: SD Mailing List Archive
- Topic: System Dynamics in the elevator
- Replies: 22
- Views: 16550
System Dynamics in the elevator
Bravo to Mike McCann. Even though Im not a marketing person, I agree with his view on the low value of a canned "elevator speech". The key, in all social settings, not only instrumental ones where you hope to sell someone something, is to listen to the other person, get to know them, and u...
- Sun Oct 19, 1997 6:06 pm
- Forum: SD Mailing List Archive
- Topic: perennial crop modelling
- Replies: 7
- Views: 4698
perennial crop modelling
Besides Dennis Meadows classic "dynamics of commodity production cycles", see Helmut Weymars "Dynamics of the World Cocoa Market" (19668, MIT Press). Weymar did his phd thesis in economics but worked with the MIT SD group; his model is basically a system dynamics model of the sup...