Ventana software support forum

I have been searchning for forest fires model but found very little. Natural forest fires are important factor in the eco system. It is a way to maintain the level of fuels, refresh the land, and some plant seeds requie forest fire to sprout. Now, with logging, human made fires (in an uncontrolled, ...

Goeff, Thanks for your suggestion. I took yours and Bobs suggestion and it works nicely. The case I am considering.is Similar to epidemic problem whre O1 is uncontrollable outflow (e.g. recovery, death) and O2 is controllable (quarantine). So O1 has higher precidence. The flow equations I ended up u...

Since the Constraint thread is still luke warm, Id like to ask the following technical question. Is there an easy way to impose a constraint between two out flows O1, O2 from the same stock S: O1(n+1) + O2(n+1) <= S(n) in order to prevent S(n+1) to turn negative. chariya From: "Chariya Peterson...

Justin, Thank you for the pointer to the NAP document. It is an eye opener. If the result of the Corps analysis effort is also accessible, it might be fun to create a model to simulate Don Sweeneys empirical result ( the Q, the R and the N :-) ) Having an SD model will make it a lot easier to do sce...

Dear all, Good thing is, the USs Environmental Protection Agency (EPA) is developing Environmental Data Exchange (EDX) system where data from US states and regional departments will be integrated and accessible to us. Building an SD model to predict potential environmental catastrophy will succeed o...

Anyone has, or know of anyone who has, done any study on the dynamic modeling of the Missouri river navigation effort of the Army Corps. I would appreciate any pointer to research papers on this subject. In fact, any research paper on environmental study related to the Army Corps (Sweeneys original ...

I have been following this thread with interest. I am new to SD, but have extensive background in simulation. As an exercise, I am building a model to solve certain management problems (reactive versus proactive software management) using Vensim. I started with a high level demo which I got it to wo...