Ventana software support forum

Bill Braun and Jim Hines are talking about different things, I think. Jim refers to attractiveness indicators being used to model market shares. He offers one formulation, but a better one (Id claim) is based on formal utility theory, and predicts shares using either a logit or probit model. The log...

I have been reading a report commissioned by a UK government department here that includes within it an unfavourable review of system dynamics as a modelling technique. It offers the following quote, taken from the New Fontana Dictionary of Modern Thought (1999): "Systems (sic) dynamics is ... ...

Kevin We recently completed some EU funded work looking at rail infrastructure provision using SD. It wasnt specifically about performance measurement, but may be of interest. I can forward details directly if you want them. John Swanson Associate Steer Davies Gleave 28-32 Upper Ground London SE1 9P...

I have an interesting problem I am trying to use SD to help with, but have run into trouble formulating it satisfactorily. The study concerns a town in the UK, with a local economy that is primarily low-wage and low-skills and is in slow long-term decline. The town has relatively poor transport link...

Christian I am doing work in this area. The central idea Ive used is that transport provides access - to jobs, to a work force, etc - and that the attractiveness of a location for housing or business use is related to its accessibility. I borrowed ideas from the original Forrester Urban Dynamics mod...