Ed Nauman owns a house situated just
uphill from some city-owned property that provides his yard with an endless
supply of pocket gophers. He has tried to defeat them from digging up his
yard, but without much success until he tried a siren with several annoying
tones. A simple timing circuit drives the siren with a low duty cycle. As Bill
Murray said in Caddyshack, "In
the immortal words of Jean Paul Sartre, 'Au revoir, gopher.'"
Some of our culture's most enduring robots appeared in the 80s. The Aliens series produced another evil android, and we saw light robot fare in the form of Short Circuit. Two of the great robots of all time also showed up: The Terminator and RoboCop.
Major global metropolitan areas are implementing a vast number of technology, energy, transportation, and Internet projects to make the metropolis a friendlier, greener, safer, and more sustainable place to be.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.