Search found 117 matches

by John Sterman
Wed Jan 05, 2005 5:07 pm
Forum: 2004
Topic: dt/time step in the real world
Replies: 8
Views: 7142

dt/time step in the real world

Posted by John Sterman <jsterman@MIT.EDU> Kim points out that "" we are trying to help ordinary executives to appreciate how their strategies deliver performance by building, developing and sustaining resources that are interdependent."" Kim's focus on helping real managers make better decisions in ...
by John Sterman
Wed Dec 22, 2004 2:13 pm
Forum: 2004
Topic: Models and Science
Replies: 20
Views: 23199

Models and Science

In his response to Tom Fiddaman about policy to address the risks of climate change, Mark Wallace argues that ""the only sensible public policy"" response to the threat of global warming is ""hands-off"" until science can supply definitive answers through improved models and empirical study. He furt...
by John Sterman
Thu Nov 04, 2004 5:35 pm
Forum: 2004
Topic: ANNOUNCE Meadows Award Endowment fund drive
Replies: 0
Views: 4267

ANNOUNCE Meadows Award Endowment fund drive

To all supporters of system dynamics: We need your help. The System Dynamics Society announces a fundraising drive to permanently endow the Dana Meadows Student Award, given for the best work by students presented at the annual conference of the Society. Through the generosity of a diverse group of ...
by John Sterman
Tue Oct 19, 2004 1:13 pm
Forum: 2004
Topic: REMINDER Modeling Urban Social Dynamics
Replies: 0
Views: 2416

REMINDER Modeling Urban Social Dynamics

>This is a reminder that about this forthcoming workshop. > >Call for papers: Modeling Urban Social Dynamics >7 - 8 April 2005 > >Policymakers and academic researchers have a longstanding interest in >understanding how cities evolve and change. However, conventional >methods of modeling urban develo...
by John Sterman
Thu Oct 14, 2004 8:06 pm
Forum: 2004
Topic: ANNOUNCE Congratulations to Paulo Goncalves
Replies: 0
Views: 2681

ANNOUNCE Congratulations to Paulo Goncalves

>Folks, > >I'm delighted to let you know that Paulo Goncalves has received the >2004 Doctoral Dissertation Award by the Council of Logistics >Management (CLM) for his dissertation, ""Demand Bubbles and Phantom >Orders in Supply Chains."" As it is stated in their web page, CLM >provides an award for ...
by John Sterman
Thu Oct 07, 2004 1:43 pm
Forum: 2004
Topic: ANNOUNCE Cogprints adds "Social Simulation" to its pre-print
Replies: 0
Views: 2398

ANNOUNCE Cogprints adds ""Social Simulation"" to its pre-pri

John Sterman From: John Sterman <jsterman@MIT.EDU> >Dear Colleagues, > >As many of you are aware there is a ""movement"" amoung many academics to >""free the literature"". That is making it more available through the use >of: (A) journals that are free to access on-line (such as JASSS) and (B) >the ...
by John Sterman
Mon Sep 13, 2004 10:01 pm
Forum: 2004
Topic: ANNOUNCE Faculty opening in system dynamics at MIT
Replies: 0
Views: 2331

ANNOUNCE Faculty opening in system dynamics at MIT

Folks, The MIT Sloan School of Management invites applications for a tenure-track faculty position in system dynamics, to begin Fall 2005. The position (along with two additional related openings in operations research and operations management) is described below. Candidates should have strong rese...
by John Sterman
Tue Aug 03, 2004 7:01 pm
Forum: 2004
Topic: ANNOUNCE CFP: Modeling Urban Social Dynamics
Replies: 0
Views: 2304

ANNOUNCE CFP: Modeling Urban Social Dynamics

FYI, John Sterman >Call for papers: Modeling Urban Social Dynamics > >7 - 8 April 2005 > >Policymakers and academic researchers have a >longstanding interest in understanding how >cities evolve and change. However, conventional >methods of modeling urban development have not >been able to capture th...
by John Sterman
Fri Jun 18, 2004 2:09 pm
Forum: 2004
Topic: ANNOUNCE POSTDOC OPPORTUNITY IN CASOS AT CMU
Replies: 0
Views: 2423

ANNOUNCE POSTDOC OPPORTUNITY IN CASOS AT CMU

Ths may be a good opportunity for people with system dynamics background John Sterman > >NAACSOS - http://www.casos.cs.cmu.edu/naascos/ >POSTDOC OPPORTUNITY IN CASOS AT CMU > >We are looking for a person for a PostDoc position at CMU in CASOS. >PostDoc will work in the lab to run a series of simulat...
by John Sterman
Wed Jun 16, 2004 3:55 pm
Forum: 2004
Topic: Product Development Dynamics and Cost
Replies: 2
Views: 3246

Product Development Dynamics and Cost

Johannes asks about SD models of product development. There is a large literature applying SD to project management and product development. See Business Dynamics ch. 2 for a discussion of the Pugh-Roberts approach to project/development modeling; the book also includes references to other key works...
by John Sterman
Mon Jun 07, 2004 3:04 pm
Forum: 2004
Topic: ANNOUNCE Post-doctoral position
Replies: 0
Views: 2492

ANNOUNCE Post-doctoral position

A position of potential interest to the SD community John Sterman POSTDOCTORAL POSITION Dynamic Decision Making Laboratory Carnegie Mellon University The Dynamic Decision Making Laboratory (DDMLab) (www.cmu.edu/ddmlab) in the department of Social and Decision Sciences at Carnegie Mellon University (...
by John Sterman
Mon Jun 07, 2004 1:43 pm
Forum: 2004
Topic: Successive versions of a model
Replies: 4
Views: 2972

Successive versions of a model

Martin Schaffernicht is right on when he suggests that models are always provisional and subject to change as conditions change. The best and shortest statement on this principle is from 1970, when Jay Forrester wrote a memo entitled "" 'The' Model Versus a Modeling 'Process' "", which was subsequen...
by John Sterman
Wed May 26, 2004 10:22 pm
Forum: 2004
Topic: Donella Meadows Archive launched
Replies: 0
Views: 2322

Donella Meadows Archive launched

A wonderful resource for any system dynamicist. John Sterman >Press Release - May 25, 2004 > > >Donella Meadows Archive Goes Public On-Line > >Educators and others interested in sustainability have a new >resource - the Donella Meadows Archive. The Archive is an on-line >library containing nearly 80...
by John Sterman
Wed Apr 07, 2004 3:44 pm
Forum: 2004
Topic: MIT system dynamics course materials on the web
Replies: 2
Views: 3775

MIT system dynamics course materials on the web

Folks, I'm happy to announce that the syllabus, lecture schedule, and assignments for the introductory course in system dynamics here at MIT are now available through MIT's Open CourseWare project, at http://ocw.mit.edu/OcwWeb/Sloan-School-of-Management/15-874Fall2003/CourseHome/index.htm Anyone, fr...
by John Sterman
Fri Feb 27, 2004 8:42 am
Forum: 2004
Topic: IIASA job openings in Forestry, Technology, and Greenhouse G
Replies: 0
Views: 2022

IIASA job openings in Forestry, Technology, and Greenhouse G

Some modeling jobs at IIASA of potential interest. John Sterman >From: "Margaret Goud Collins" <margaret.g.collins@verizon.net> >To: Friends of IIASA > >Dear Colleagues, > >The International Institute for Applied Systems Analysis (IIASA) has >openings for 3 research scholar positions related to its ...
by John Sterman
Tue Feb 10, 2004 11:34 am
Forum: 2004
Topic: Contact rate for word of mouth
Replies: 9
Views: 3744

Contact rate for word of mouth

Following Mike Beans nice reply on word of mouth models, these models are treated in depth in Chapter 9 of Business Dynamics. For an excellent application, see Urban, G., J. Hauser, and J. Roberts (1990) Prelaunch forecasting of new automobiles, Management Science 36, 401-421. Also chapter 17 in Ric...
by John Sterman
Wed Jan 28, 2004 9:47 am
Forum: 2004
Topic: Can SD models be validated without being run?
Replies: 38
Views: 9754

Can SD models be validated without being run?

My good friend Jim Hines "question[s] whether statistical estimates have any rational claim on our attention other than widespread use and anecdotal evidence of usefulness." Jim wants rigorous demonstrations of the value of statistical reasoning and estimation methods. There are so many I dont know ...
by John Sterman
Mon Jan 12, 2004 10:55 am
Forum: 2004
Topic: Can SD models be validated without being run?
Replies: 38
Views: 9754

Can SD models be validated without being run?

The discussion Kim began on model "validation" has been interesting. A couple of comments. George Simpson wonders whether my argument in Business Dynamics that "validation and verification are impossible" was designed "more to shock people into paying attention than meaning it literally." No, I do m...
by John Sterman
Mon Jan 12, 2004 9:14 am
Forum: 2004
Topic: Call for papers: NAACSOS 2004
Replies: 0
Views: 2085

Call for papers: NAACSOS 2004

Folks, this conference may be of interest; the NAACSOS community has much in common with the SD community. John Sterman From: John Sterman <jsterman@MIT.EDU> >Date: Fri, 09 Jan 2004 10:57:45 -0500 >From: Kathleen Carley <kathleen.carley@cmu.edu> > >NAACSOS 2004 -----June 27-29, 2004, Pittsburgh PA >...
by John Sterman
Sat Jan 10, 2004 4:15 pm
Forum: 2004
Topic: NSF Human and Social Dynamics Competition
Replies: 0
Views: 1959

NSF Human and Social Dynamics Competition

The US National Science Foundation is soliciting proposals for its Human and Social Dynamics program (see announcement below). This priority area for NSF includes modeling of human behavior and would be highly appropriate for many in the SD field. See the link for more info. John Sterman From: John ...
by John Sterman
Thu Jan 08, 2004 8:42 am
Forum: 2004
Topic: Faculty Job Openings
Replies: 0
Views: 2170

Faculty Job Openings

Folks, My colleague Prof. Yossi Sheffi is leading an important partnership between MIT and the government of Spain to create a world-class program in logistics education and research, centered in Zaragoza. Yossi and the other program participants are keen to include system dynamics in the teaching a...
by John Sterman
Mon Dec 22, 2003 9:33 am
Forum: 2003
Topic: Postdocs / ICCS / Healthcare Program
Replies: 0
Views: 3512

Postdocs / ICCS / Healthcare Program

Several announcements of potential interest. John Sterman From: John Sterman <jsterman@MIT.EDU> New England Complex Systems Institute Announcements -> Immediate Postdoctoral Fellowship Opportunities http://www.necsi.net/education/postdoc.html -> International Conference on Complex Systems / May 16-2...
by John Sterman
Tue Dec 02, 2003 7:09 pm
Forum: 2003
Topic: Manufacturing Control Systems
Replies: 30
Views: 31309

Manufacturing Control Systems

Jim Hines wants a model that operates in continuous time but represents discrete events. Hazhir Rahmandad and I have developed such a model, specifically a continuous time agent-based model of epidemics/diffusion dynamics in which events are discrete. Based on the classic SEIR epidemic model (see ch...
by John Sterman
Thu Nov 20, 2003 8:50 am
Forum: 2003
Topic: Manufacturing Control Systems
Replies: 30
Views: 31309

Manufacturing Control Systems

George Simpsons challenge to Jim Hines includes modeling a process such as a construction project in which "The processes have branching and merging logic (pi-calculus), where for example a branch in the process flow may wait for another branch to arrive. E.g., the "build walls" branch waits for bot...
by John Sterman
Wed Nov 19, 2003 7:17 am
Forum: 2003
Topic: Call for Papers: International Conference on Complex Systems
Replies: 0
Views: 3010

Call for Papers: International Conference on Complex Systems

This conference should be of interest to many in the system dynamics community. John Sterman From: John Sterman <jsterman@MIT.EDU> ***** Subject: ICCS:International Conference on Complex Systems CFP ICCS:International Conference on Complex Systems CFP ------------------------------------------------...