Against the backdrop of over two hundred thousand people dead or missing and millions of people homeless after China's massive earthquake and Myanmar devastating cyclone, forecasts estimate that natural and man-made disasters are likely to increase five-fold both in number and impact over the...

"The qualitative dynamics of a discrete time version of a deterministic, continuous time, nonlinear macro model formulated by Haavelmo are fully characterized. Recently developed methods of symbolic dynamics and ergodic theory are shown to provide a simple, effective means of analyzing the...