This is the README for Logistic.0.9b.NIHS.b.tar.gz [Download] [Browse] [Up]
Copyright 1992 by Robert A. Desharnais, California State University, LA Logistic was created for an introductory college course in ecology. It simulates the discrete-generation version of the logistic model of population growth. Carrying capacity and growth rate parameters can be varied to see the effects on population growth. In a view of population numbers versus time, students learn how fluctuations in numbers can result from deterministic nonlinear dynamics. Chaos theory is illustrated by seeing how population numbers at some future generation vary with initial population densities. A "bifurcation diagram" of long term population numbers as a function of the population growth rate shows the nonlinear dynamical principles of period doubling, acyclic chaos, and period locking. Students can use the mouse to selection regions of the bifurcation diagram to "blow up," allowing them to see the fractal geometry of the period doubling cascades. Views can printed or copied and pasted into other applications.
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.