Search found 23 matches

by George Richardson
Thu Dec 07, 2006 3:58 pm
Forum: SD Mailing List Archive
Topic: QUERY Stock and flow diagrams of Senge Archetypes
Replies: 6
Views: 10949

QUERY Stock and flow diagrams of Senge Archetypes

Posted by George Richardson <gpr@albany.edu> Years ago, I assigned one of my doctoral seminars the task(s) of building formal models of all the archetypes in the Fifth Discipline and in the Pegasus publications by Dan Kim. It was a revealing exercise. Some are trivial, e.g., growth to a limit or esc...
by George Richardson
Tue Feb 17, 2004 5:14 pm
Forum: SD Mailing List Archive
Topic: Tenure-Track Position in System Dynamics at University at Al
Replies: 0
Views: 2848

Tenure-Track Position in System Dynamics at University at Al

ANNOUNCE: Search for Tenure-Track Position in System Dynamics at University at Albany The System Dynamics Group at the University at Albany in conjunction with the Department of Public Administration and Policy is pleased to announce a search for a tenure track faculty member to teach and do researc...
by George Richardson
Sun May 04, 2003 4:57 pm
Forum: SD Mailing List Archive
Topic: Can system dynamics models "learn"
Replies: 46
Views: 33656

Can system dynamics models "learn"

I must admit to more than a little pique at this ongoing discussion. Sorry about that; please forgive what follows if it bugs you. It is probably far too self-centered and impolite for me to point out that the only example (to my knowledge) of a system dynamics model put forward to address the quest...
by George Richardson
Sun May 04, 2003 4:05 pm
Forum: SD Mailing List Archive
Topic: Communicating System Dynamics to Others
Replies: 16
Views: 11907

Communicating System Dynamics to Others

On Thursday, May 1, 2003, at 07:55 AM, ALLOCAR SRASBOURG wrote: > As a businnesman I have many other friends in business and I have too > a board with administrators and family stock holders. While being very > interested in SD, I have not the > intention to talk to any of these people about SD. > >...
by George Richardson
Sat Apr 26, 2003 10:57 am
Forum: SD Mailing List Archive
Topic: Can system dynamics models "learn"
Replies: 46
Views: 33656

Can system dynamics models "learn"

On Friday, April 25, 2003, at 05:05 AM, Finn Jackson wrote: > For a model to truly "learn" it would have to be able to rewrite its > own > equations. This is the prevailing wisdom. However, I do not think it is an adequate answer to the question of whether models can learn. For example, a ...
by George Richardson
Tue Mar 18, 2003 12:20 pm
Forum: SD Mailing List Archive
Topic: Simulation Model Interchange Language
Replies: 13
Views: 16477

Simulation Model Interchange Language

On Sunday, March 2, 2003, at 03:49 PM, Jim Hines wrote: > (1) Jim Thompsons most important question is whether the users can > offer any kind of incentive to vendors for incorporating the ability to > export and import SMILE files. Nothing very good comes to my mind, > which is why its such a dandy ...
by George Richardson
Mon Feb 17, 2003 8:22 pm
Forum: SD Mailing List Archive
Topic: HICSS37 Call for Papers
Replies: 0
Views: 2775

HICSS37 Call for Papers

Modeling Nonlinear Natural and Human Systems Minitrack at the 37th Hawaiian International Conference on System Sciences January 5 to 8, 2004 Waikoloa Hitlton, The Big Island of Hawaii Call for PapersThis minitrack is a premier presentation forum for the latest ideas and results in the areas of agent...
by George Richardson
Fri Aug 09, 2002 8:16 am
Forum: SD Mailing List Archive
Topic: Reflections on Barry on the HPS website
Replies: 0
Views: 2923

Reflections on Barry on the HPS website

The loss of Barry Richmond has affected us all and will continue to be felt for a long time. To help us all help each other through this sadness and celebrate Barrys life and contributions, High Performance Systems has put up a spot on their web site http://www.hps-inc.com for people to write reflec...
by George Richardson
Thu May 09, 2002 2:27 pm
Forum: SD Mailing List Archive
Topic: HICSS Call for papers
Replies: 1
Views: 3126

HICSS Call for papers

2nd Call For Papers for Modeling Nonlinear Natural and Human Systems Minitrack Part of the Decision Technologies in Management Track At the Thirty-sixth Annual HAWAII INTERNATIONAL CONFERENCE ON SYSTEM SCIENCES On the Big Island of Hawaii January 6 - 9, 2003 Additional detail on the web site: http:/...
by George Richardson
Mon May 06, 2002 7:40 am
Forum: SD Mailing List Archive
Topic: Beer/Wine Game
Replies: 6
Views: 10790

Beer/Wine Game

On Thursday, May 2, 2002, at 05:41 AM, Niall Palfreyman wrote: > the final debriefing discussion > took about 30 minutes. Theres a lot to talk about and learn about in a debrief of the beer game. It commonly takes about 90 minutes. The System Dynamics Society has a video tape, I believe, of John Ste...
by George Richardson
Thu Apr 11, 2002 10:04 am
Forum: SD Mailing List Archive
Topic: Systems modeling, puzzles and Taxonomy
Replies: 1
Views: 2796

Systems modeling, puzzles and Taxonomy

On Wednesday, April 10, 2002, at 01:41 PM, Beck, Peter [AMSTA-AR-FSF-X] wrote: > My question to the list is do system/SD models have this type of diversity > or do they all fall into one class, [...] Well, first and foremost, theyre all about dynamics, so I guess thats one class of system. But there...
by George Richardson
Thu Mar 21, 2002 9:41 pm
Forum: SD Mailing List Archive
Topic: SD Models from Written Text
Replies: 30
Views: 28408

SD Models from Written Text

On Wednesday, March 20, 2002, at 02:07 PM, sheldon friedman wrote: > The > extraction of knowledge for any computer program or the creation of a > computer program is still biased by what the programmer perceives as > correct. Any progam that we use will contain the bias of the programmer > or that ...
by George Richardson
Thu Mar 21, 2002 9:41 pm
Forum: SD Mailing List Archive
Topic: SD Models from Written Text
Replies: 30
Views: 28408

SD Models from Written Text

[Hosts Note: This message is being resent as it showed up blank before] On Wednesday, March 20, 2002, at 02:07 PM, sheldon friedman wrote: > The > extraction of knowledge for any computer program or the creation of a > computer program is still biased by what the programmer perceives as > correct. A...
by George Richardson
Wed Mar 13, 2002 11:04 pm
Forum: SD Mailing List Archive
Topic: SD Models from Written Text
Replies: 30
Views: 28408

SD Models from Written Text

On Wednesday, February 27, 2002, at 10:38 AM, jnoble1@mmm.com wrote: > I would like to pose the following question to the SD list. What > research as > been done in formal heuristics/methodologies/techniques for extracting, > from a > system or problem domains written textual descriptions, system va...
by George Richardson
Wed Mar 13, 2002 8:04 am
Forum: SD Mailing List Archive
Topic: SD Models from Written Text
Replies: 30
Views: 28408

SD Models from Written Text

On Friday, March 8, 2002, at 02:46 AM, Pieter van der Hijden wrote: > If we could agree on some special codes to insert in our texts and have > the discipline to apply them, intelligent querying and searching of our > texts will be possible. Pieters description sounds interesting. Id suggest Pieter,...
by George Richardson
Tue Nov 13, 2001 2:38 pm
Forum: SD Mailing List Archive
Topic: Attractiveness Multiplier
Replies: 12
Views: 32970

Attractiveness Multiplier

>As Bill Braun pointed out, one problem with this formulation is the more >attributes you add to the attractiveness function, the more volatile >it becomes. Thats probably true if one thinks about the equation in isolation, but very likely to be false when all the variables are interacting together ...
by George Richardson
Mon Sep 10, 2001 12:39 pm
Forum: SD Mailing List Archive
Topic: System dynamics in government
Replies: 0
Views: 5356

System dynamics in government

Id like to compile a list of the uses of system dynamics in government, including agencies that use it regularly, individuals to contact, important studies (who did them and for whom), and even "failures." Im after uses IN [by, for] government, not studies ABOUT government or economics or ...
by George Richardson
Tue Jul 31, 2001 4:12 pm
Forum: SD Mailing List Archive
Topic: Thoughts for future conferences
Replies: 5
Views: 5769

Thoughts for future conferences

Kim wrote: >The idea was simple - run a two-part, overlapping conference, e.g. >*** Day 1 primarily for academics (but open to any practitioners with an >interest in going deep) >*** Day 4 primarily for practitioners (but open to any academics with a keen >interest in application) >*** substantial o...
by George Richardson
Tue Jul 31, 2001 4:01 pm
Forum: SD Mailing List Archive
Topic: The order of a system
Replies: 16
Views: 10737

The order of a system

People wrote: >Definition: The order of a system is the number of stocks that are >connected to flows, _minus_ the number of stock pairs which are >connected by conserved flows. > >I guess I do still have one issue remaining: What about a system of >three stocks A, B and C, with a conserved flow fro...
by George Richardson
Fri May 18, 2001 10:49 am
Forum: SD Mailing List Archive
Topic: David Andersen - Distinguished Service Professor
Replies: 0
Views: 3695

David Andersen - Distinguished Service Professor

At its recent meeting the Board of Trustees of the State University of New York voted to promote David Andersen to the rank of Distinguished Service Professor. Promotion to the rank of Distinguished Professor is the highest honor a professor in the SUNY system can receive. The award recognizes David...
by George Richardson
Mon Apr 30, 2001 10:33 am
Forum: SD Mailing List Archive
Topic: Fast demonstrations of complex behaviour
Replies: 14
Views: 18617

Fast demonstrations of complex behaviour

>I wrote: > >> ... I cant see what this teaches me about complex systems... > >And Niall wrote: ...My first reaction was: "What a silly question - >doesnt the man know _anything_ about complexity?" Then I started trying >to think of a good response, and found to my dismay that I couldnt. T...
by George Richardson
Tue Apr 24, 2001 1:46 pm
Forum: SD Mailing List Archive
Topic: Fast demonstrations of complex behaviour
Replies: 14
Views: 18617

Fast demonstrations of complex behaviour

Concerning the group milling around exercise in which everyone tries to stay equidistant from two people that individual privately selected: Ive done this several times, and thought about (but not for very long), and I cant see what this teaches me about complex systems. Could someone enlighten me? ...
by George Richardson
Tue Mar 13, 2001 1:59 pm
Forum: SD Mailing List Archive
Topic: Hawaii conference on systems sciences
Replies: 0
Views: 2834

Hawaii conference on systems sciences

This conference, held in January every year ("off-season" to our usual summer conference), is becoming very interesting to system dynamicists. Enjoy -- ...George Call For Papers for MODELING NONLINEAR NATURAL AND HUMAN SYSTEMS MINITRACK (Formerly Agent-Based and System Dynamics Minitrack) ...