Search found 6 matches
- Mon Jul 22, 2002 5:53 pm
- Forum: SD Mailing List Archive
- Topic: Reviews of SD teaching texts
- Replies: 0
- Views: 5938
Reviews of SD teaching texts
This announcement is addressed to all who are using one or more published texts to teach System Dynamics. W The field of System Dynamics has seen the publication recently of new texts joining a handful of classics for use in teaching SD to students at different levels of age and experience. It is ap...
- Mon Jul 22, 2002 12:39 am
- Forum: SD Mailing List Archive
- Topic: Dimensional Consistency
- Replies: 1
- Views: 6140
Dimensional Consistency
geoff coyle wrote: > Yes, its very true but, as far as I am aware, SD is the only operaional > resarch technique that even mentions dimensions. > I am surprised by Geoffs remark. In our introductory course in OR (mostly linear programming) in a business school, we always mention the importance of ch...
- Tue Apr 02, 2002 10:36 am
- Forum: SD Mailing List Archive
- Topic: qualitative data, fuzzy sets and table functions in
- Replies: 1
- Views: 5330
qualitative data, fuzzy sets and table functions in
There is at least one representation theorem used in fuzzy control theory that says, in effect, that an arbitrary non-linear function of one variable can be approximated by a fuzzy relationship combined with a de-fuzzification procedure. Thus, in some sense, all TABLE functions can be thought of as ...
- Tue Sep 18, 2001 12:17 am
- Forum: SD Mailing List Archive
- Topic: System Dynamics vs. Discrete Event Simulation, Expert System
- Replies: 2
- Views: 6302
System Dynamics vs. Discrete Event Simulation, Expert System
Not to sow more confusion but it is possible to develop a discrete-event model of an SD model. A Master`s student of mine and I did so for a small Commodity Cycle model about 10 years ago. The time behaviours don`t look very similar but the autocorrelation structures are quite similar. On the other ...
- Tue Apr 03, 2001 11:19 am
- Forum: SD Mailing List Archive
- Topic: SD and Markov processes
- Replies: 7
- Views: 23963
SD and Markov processes
Michael Evans wrote: It IS tricky because you have to integrate a stochastic process (essentially a sequence of delta functions with random arguments) and there are different ways to do this, none of which are equivalent to the Euler or Runge-Kutta methods implemented in most SD packages. Look for l...
- Fri Nov 10, 2000 5:42 pm
- Forum: SD Mailing List Archive
- Topic: Delays in SD modeling!!
- Replies: 15
- Views: 55065
Delays in SD modeling!!
Bob Eberlein wrote: > > None of this is very difinitive, but I think there is a nice research > challenge out there around the nature or delays. Any delay can be > represented as a probability distribution of the time it will take an > atom entering a level to leave that level. As we go from first t...