It is easy that the main resonance of a stepped drive shaft is analyzed with the equivalent shaft.

After the yen hit a 15-year high of Y83.57 last week, Mr Kan and his ministers stepped up efforts to talk the currency down to a level more comfortable for the exporters who drive economic growth.

And although they come from a movement that spurns individual leadership, preferring group decision-making, key figures have stepped up to drive the peace process forward.