Ventana software support forum

SDs, The construction of SD models is done in a number of ways including different software packages on different platforms. This diversity has a number of advantages but at the same time it is restricting the ability to exchange views and comments on certain models, since models are not (yet) vendo...

Rays reply on Rutgers Q on Music Industry modelling is interesting. It refers to - at least - three questions. Q1: can we model the Illegal Music Industry (Rutgers initial Q.)? Q2: if so, should any interested party have access to this modelling process? Q3: and more in general: should any decision ...

John J. Voyers query is most intriguing. To start with, I must confess that Im not an expert on disabilities or injury claims. Nevertheless, I would like to add some thoughts on this issue. The query seems to have two parts. The first is about the problematic behavior: >(...) a query on (...) any in...

SDrs, Ed Gallaher posed a very interesting question: * Can anyone provide examples that contradict Jays assertion? in which Jays assertion is: >>> Mathematicians have had some difficulty defining a derivative, and >>> there is a reason. There is no such thing. Nowhere in nature or >>> human affairs ...

Hi All, This thread on extracting models from written documents generates a certain Aha-erlebnis, as the germans would probably say. The ratio behind the initial request seems to be the availability of a tool that does the hard work: extracting knowledge from certain sources. If that would be possib...

Dear SDrs, According to the timelines of the 20th century, <http://timelines.ws/20thcent/1961.HTML> the word widget comes from the Musical How to Succeed in Business Without Really Trying, by Frank Loesser and Abe Burrows who produced the Broadway hit. The play lampooned life at the fictional Worldw...

Dear colleagues, geoff coyle wrote with regard to the content of this discussion list: >Id be the last to turn away an enquirer, but is it unreasonable > to suggest that someone who wants to use the Societys facilities This struck me as rather strange. I thought there has been put forward, also on t...

The discussion on Level of Detail in Models now seems to me like a loop. Maybe someone can falsify it. I observe the following: * we dont understand why X occurs so we have a problem * that problem can be solved if we know why it occurs so we need (more) insight * in order ot increase our insight we...

John, Regarding prison populations you may find some interesting findings in the research of Paul E. McCold (1993): "The role of fiscal policy in producing prison population dynamics: a trend analysis and dynamic simulation of felony offender processing in New York State 1975-1988. Dissertation...

I was wondering whether someone has (made) a model of the escalating KOSOVO crisis? -- Carolus Gr=FCtters +++++++++++++++++++++++++++++++++++++++++++++++++++++ Recht en Informatica Law and IT Faculteit der Rechtsgeleerdheid Faculty of Law KU Nijmegen, University of Nijmegen URL: http://www.jur.kun.n...

Richard, (regarding group modeling) try: 1. Group model building : facilitating team learning using system dynamics / Jac A.M. Vennix. - Chichester [etc.] : Wiley, cop. 1996. - XIII, 297 p. : ill. ; 24 cm Lit. opg.: p. [278]-292. - Index. ISBN 0-471-95355-5 cloth and: 2. the special issue of the Sys...

Im not that often in an elevator, neither do I have trouble in explaining what System Dynamics is all about. The problem I do have has to do with the actual choice, within 30 seconds, out of the numerous - different - definitions and interpretations or meanings of System Dynamics given, for example,...

Answering a question on "the development of crime" models, Nordin Othman suggested the following: >Daryl A. Hellmans book "The Economics of Crime" is a good base towards >conceptualization. I tried to locate this book in DUTCH libraries, but didnt succeed. The only thing I found ...

from carolus grutters (carolus@jur.kun.nl) Bob urged us : > Please send messages only to system-dynamics@world.std.com. Bob, is this reply on your SD0065 (via europe.std.com AND NOT world.std.com) acceptable ? [ My answer is yes and I apologize for my confounding of the confusion. It is OK to post t...

L.S., A couple of weeks ago Tim Edwards asked the following >I am currently considering which software package would best suit my needs. >I have looked at the demo versions of PowerSim, STELLA/iThink and Vensim for >PC and am left somewhat in a state of confusion ! Subsequently, some people responde...

Some remarks have been made about the threads on this list. RJ Glitz suggested: * feedback from conference sessions I would like to add: * feedback on articles published in the System Dynamics Review Carolus +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Carolus Grutters Recht en Informat...

I mentioned in a previous note my work on the modeling of legal procedures. George Richardson asked in response: >What are the dynamics of interest in this area? Ill try to formulate a short answer to this question. 1. Using a system-dynamic approach of a certain process implies getting insight into...

Dear Subscribers, With reference to Bob Eberleins call for participation I would like to ask something. Im working on my thesis concerning the use of SD in the domain of Law (and IT), and particularly the modelling of legal procedures. As far as I know, little has been done in this area. Does anyone...