Ventana software support forum

This is Andy Ford responding to the inquiry about SD modeling of criminal systems. Several of Bob Johannsens students at Portland State University developed a "process simulation model" for a graduate course in business process reengineering on the Multnomah County criminal system. The sto...

Erik Tan raised a question about the use of models in the negotiations process, and Drew Jones replied with his views on how model "ownership" influences whether the models becomes weapons in the negotiations or whether they help the participants arrive as a shared vision of the complex sy...

This is Andy Ford at WSU responding to the MODSIM question from Michel Chevalier in the Dominican Republic. I believe MODSIM was developed by John Labadie of Colorado Sate Univ. It represents the physical river system as a series of nodes and links. A node can stand for both storage and non-storage ...

This is Andy Ford at WSU replying to Tony Meppems comments on the word "Sustainability." Dana Meadows wrote an interesting editorial on the popularity and meaning of this "buzzword." Its titled "Sustainability Requires Know-How, Ingenuity and Wisdom," and it appeared as...

This is Andy Ford at WSU replying to Tim Kedwards inquiry about the software to use in biological population modeling such as predator prey models: I use Stella in an undergraduate Environmental Science course on building System Dynamics models. It works quite well. The students use Stella in the la...

This is Andy Ford at WSU replying to the question about modeling and simulation of water management from K. Roman Sliwa of the University of the Americas-Puebla in Mexico. A handful of System Dynamics practioneers are looking into water resource issues. Yaman Barlas and his students at BogazicYi Uni...

This is Andy Ford at WSU replied to Bill Steinhursts question to any of us in the NorthWest who might remember some modeling work of criminal justince in Multnomah County. One of the modelers is Bob Johannsen. Bob is with Portland State University. His students did a model of the people flow through...

Reply to Paige Brown of the World Resources Institute on Question of GreenHouse Gas Emissions Hi Page, this is Andy Ford from WSU with some papers on greenhouse gas modeling: First, Fossil2, a System Dynamics model of the US energy system, has been used to study US policy on greenhouse gas emissions...

This is Andy Ford at WSU replying to the question from Jaime Finguerut (message 0250) about System Dynamics examples that might relate to a large scale fermentation system. Jaime, you might get some ideas from the model of eutrophication of lakes by Jay Anderson. It is carefully documented in Chapte...

This is Andy Ford at WSU responding to the question (113) about System Dyanmics applications to crime and the justice system. One interesting example from the proceedings LSystem Dyanmics 95 is the paper by Kim and Kim on the size of the penalty for speeding. They review a game theoretic account of ...

This is a reply from Andy Ford at WSU to Agus Sari who is looking at the market for permits to release carbon dioxide. The question has to do with modeling this market in an international context. I recommend a paepr by Robert Hahn and Gordon Hester to get a feeling for how such markets may operate....

>Hello, everyone. > > This is Andy Ford at Washington State University. Im replying to >one of the questions about the world modeling efforts. The question was >whether the world model was ever run under chaotic conditions, and whether >we learned anything useful from the analysis. I am not aware of...