Important information regarding the recent AMS power outage.

The transformer that provides electricity to the AMS building in Providence went down on Sunday, April 22. The restoration of our email, website, AMS Bookstore and other systems is almost complete. We are currently running on a generator but overnight a new transformer should be hooked up and (fingers crossed) we should be fine by 8:00 (EDT) Wednesday morning. This issue has affected selected phones, which should be repaired by the end of today. No email was lost, although the accumulated messages are only just now being delivered so you should expect some delay.

Thanks for your patience.



Mathematical Digest


Short Summaries of Articles about Mathematics
in the Popular Press

"Putting a Darwinian Spin on the Diesel Engine," by Bruce Schechter. New York Times, 19 September 2000.

Normally, engine design proceeds by trial and error. However, Drs. Peter Senecal and Rolf Reiz at the University of Wisconsin used microgenetic algorithms to simulate different diesel engine designs. They developed a test engine that "consumed 15 per cent less fuel than a standard engine while producing one-third as much nitric oxide and half the soot." Just as evolution leads to the optimum combination of genes for survival, computer simulation using the algorithms finds the optimum engine by "mating" the design of good engines. Says Dr. Senecal, "This is the first application of genetic algorithms to engine design."

--- Michael Breen

American Mathematical Society