The vibration characters in twotypes ofcoupled problems such as the Poisson's and the junction interaction in liquid-filledpipes, and the pipe vibration stability are analyzed.
Panasonic showed off a system that can pipe terrestrial digital broadcasts into trains, coupled with a wireless system to allow commuters to hear a broadcast's audio via headsets without disturbing other passengers (hey, some of us like to work, read -- or sleep -- on the train).