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Henri, you might also want to talk to Prof. N. Talbot Page at Browns dept of econ. He developed something along the lines you mention. Matthias Ruth and I have a book on the optimal use of natural resources: Modeling Dynamic Economic Systems (Springer Verlag), including a good bit of microeconomic m...

several have made it to the net. see the spatial models in my signature. Example Models: http://blizzard.gis.uiuc.edu Bruce Hannon, Jubilee Professor Liberal Arts and Sciences GEOG/NCSA/EPM,INHS,NRES,PEEB,BIOENG 220 Davenport Hall, MC 150 University of Illinois Urbana, IL 61801 reply to: b-hannon@ui...

Chief Seattle did have an authentically recorded speech at about this time and it is the equal of the faked one. You can find it in Indian Oratory: famous speeches by noted Indian chieftains, Vanderwerth, W. C.,: Norman, University of Oklahoma Press, 1971. I find the authentic version far more persu...

Very nice as usual George. I am reminded of the way in which the Japanese produce steel. Nippon and I suppose another one or two of their largest makers would go to the government during a time when sales fell below capacity and make the following offer: We can run only our most efficient plants and...

for rather advanced spatial dynamic modeling, see http://blizzard.gis.uiuc.edu/ Bruce Hannon, Jubilee Professor Liberal Arts and Sciences Geog/NCSA 220 Davenport Hall, MC 150 University of Illinois Urbana, IL 61801 reply to: b-hannon@uiuc.edu Vita: http://www.staff.uiuc.edu/~j-domier/people/hannon.h...

Maybe Fidelity is the word we are looking for: Modeling Fidelity, rather than modeling accuracy. The Fidelity is to the assumptions in the model. Bruce Hannon, Jubilee Professor Liberal Arts and Sciences Geog/NCSA 220 Davenport Hall, MC 150 University of Illinois Urbana, IL 61801 reply to: b-hannon@...

MANY COMPANIES MUST FACE THIS PROBLEM. ARCO BRINGS THESE VARIOUS DEPT HEADS IN, LISTENS TO THEIR APPEAL, ANALYSES THEIR ARGUMENTS IN THE CONTEXT OF THE OVERALL BENEFIT TO THE WHOLE AND DISTRIBUTES ITS PROFITS ACCORDING TO THAT EVALUATION. SURELY THIS IS STANDARD. Bruce Hannon, Jubilee Professor From...

WE HAVE HOOKED MANY STELLA MODELS TO GRASS, ANOTHER PROMINENT GIS SYSTEM. SEE THE SITES IN MY SIGNATURE. Bruce Hannon, Jubilee Professor From: Bruce Hannon <b-hannon@uiuc.edu> Liberal Arts and Sciences Geog/NCSA 220 Davenport Hall, MC 150 University of Illinois Urbana, IL 61801 reply to: b-hannon@ui...

We have been linking cellular STELLA models together and using GIS maps to parameterize and add intervening information, for about 8 years. see: http://blizzard.gis.uiuc.edu/htmldocs/TES.html for some of these models. The cell number varies from around 2000 to nearly 120,000. The platforms vary from...

Jon Noble, the best way I have found to think of this question is to regard the dynamic model as a giant regression equation, that contains more than a little specific knowledge about the process involved. Then manipulate the parameters in the model within their known ranges until the best fit with ...

STEVE PETERSON AT HIGH PERFORMANCE SYSTEMS DID SUCH A MODEL IN STELLA YEARS AGO. ALSO THE SECOND MEADOWS BOOK ON LIMITS TO GROWTH HAS SUCH A MODEL, THO NOT STRICTLY ONE OF THE USUAL ECONOMIC KIND. Bruce Hannon, Jubilee Professor Liberal Arts and Sciences Geog/NCSA 220 Davenport Hall, MC 150 Universi...

We mention the combined use of statistical modeling with dynamic modeling in our books: Dynamic Modeling in Biology, - - in Economics, Springer Verlag, May 1997 (Hannon, Ruth) One needs statistical modeling to represent the input of information to the dynamic model in those areas that you feel you c...

I could not agree more with the statement below by Professor Forrester. Daniel Dennett (Darwins Dangerous Idea) speaks of biological evolution as an engineering-like process. The making of law for a civilized society seems to proceed in much the same way. It humbles us to think of ourselves as dynam...

DEAR BILL, YOU MIGHT BE INTERESTED IN OUR TWO NEW BOOKS ON DYNAMIC MODELING IN STELLA (MODELS ARE CONVERTABLE TO POWERSIM) AT THE FOLLOWING SITE: http://www.springer-ny.com/biology/moddysys/mdsforth.htm ONE ON ECONOMICS INCLUDING GAME THEORY, ONE ON MODELING IN BIOLOGICAL SYSTEMS, ONE ON MODELING IN...

Modeling Dynamic Systems is a new book series published by Springer-Verlag to promote a revolution in "systems thinking" by integrating skills of numeracy and techniques of dynamic modeling into a variety of disciplines. The unifying themes across the series will be the power and simplicit...

You might find some value in Computer-assisted theory building, by Robert Hanneman, Sage Publications, 1988. He is a professor of sociology at UC-Riverside. Bruce Hannon, Jubilee Professor Liberal Arts and Sciences Geog/NCSA 220 Davenport Hall, MC 150 University of Illinois Urbana, IL 61801 reply to...

Dear Mike, My colleague Matthias Ruth and I have published three books all based on STELLA: Dynamic Modeling, Dynamic Modeling of Biological Systems, Dynamic Modeling of Economic Systems, All by Springer-Verlag. Here are nearly 200 models worked out in detail. The epidemic model is rather complete i...