Search found 7 matches

by Weaver Elise A eweaver WPI.EDU
Sun Dec 11, 2005 1:34 pm
Forum: SD Mailing List Archive
Topic: Characterizing System Dynamics
Replies: 33
Views: 31619

Characterizing System Dynamics

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> My understanding of ""emergence"" is that it has to do with what we perceive at different levels of analysis. What we see at one level of analysis (or aggregation) is seen differently at another. The classic exam...
by Weaver Elise A eweaver WPI.EDU
Wed Sep 21, 2005 11:47 am
Forum: SD Mailing List Archive
Topic: Non-linear rate equations
Replies: 4
Views: 4494

Non-linear rate equations

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> One more question: What is the order of a system like this: dx/dt = x2 Is it first order, because there is only 1 stock or is it 2nd order because of the exponent? It is certainly non-linear. Elise Posted by ""Weaver, Elis...
by Weaver Elise A eweaver WPI.EDU
Tue Sep 20, 2005 11:49 am
Forum: SD Mailing List Archive
Topic: Non-linear rate equations
Replies: 4
Views: 4494

Non-linear rate equations

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> I have to retract my last comments. I was thinking the definition of ""linear rate equation"" referred only to the immediate equation of the rate. I have been reminded to think not just about the immediate equati...
by Weaver Elise A eweaver WPI.EDU
Mon Sep 19, 2005 11:38 am
Forum: SD Mailing List Archive
Topic: Non-linear rate equations
Replies: 4
Views: 4494

Non-linear rate equations

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> I have started reading a little about complexity and non-linear dynamics as applied to social systems. It took me a while to understand that when people say ""non-linear"" they are referring to equations for rate...
by Weaver Elise A eweaver WPI.EDU
Mon Aug 15, 2005 5:53 pm
Forum: SD Mailing List Archive
Topic: Feedback Thinking for Business? (Was Feedback and Behavior)
Replies: 8
Views: 7381

Feedback Thinking for Business?

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> > see what others think and how they would progress developing a model with > more short term feedback loops especially regarding decision-making which > does seem to be done spuriously from an observers standpoint. What we may in Y...
by Weaver Elise A eweaver WPI.EDU
Sat Jul 16, 2005 11:53 am
Forum: SD Mailing List Archive
Topic: Port Dynamics and Bottlenecks
Replies: 5
Views: 6037

Port Dynamics and Bottlenecks

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> You might also want to read Stephen Flynn http://www.greatertalent.com/bios/flynn.shtml on how closing ports down requires surge capacity. http://www.cfr.org/pub7269/stephen_e_flynn/the_ongoing_neglect_of_maritime_transportation_sec...
by Weaver Elise A eweaver WPI.EDU
Fri Jul 15, 2005 12:10 pm
Forum: SD Mailing List Archive
Topic: Preventing Learning Effects in Repeated experiments
Replies: 1
Views: 4958

Preventing Learning Effects in Repeated experiments

Posted by ""Weaver, Elise A"" <eweaver@WPI.EDU> Hello, There are different methodological approaches to sequence effects: 1. Counterbalancing - this is the process of ensuring that different orders of your effects are experienced by different experimental groups. One form, the la...