As well as holding coal and water, these had wheels powered from the locomotive to provide greater tractive effort.

Hydraulic or electric actuators add controlled energy to the steering mechanism, so the driver needs to provide only modest effort regardless of conditions.

The steering is particularly fine-tuned, especially for a luxury car, and is the best execution yet of G.M.'s Magnasteer technology, which provides variable effort at the wheel.

It provides intellectual effort in a social setting, with verbal and mathematical skills getting a workout.

Not only did this provide maximum tractive effort when starting but also avoided problems that might arise if the high pressure piston was in a dead centre position.

Walters provides effort and toughness, as does Cornelius Green, who is 6-4 and 257 pounds.

The resulting sharp increase in drag will provide a rapid deceleration and far less sideways cyclic will be required to provide braking effort.

"If you are going to provide the time and effort and resources that companies demand, you can't do it at cut rates," Mr. Mosler said.

Local pickers played an integral role in the development of the park from the beginning, providing effort, connections, and entertainment to help with clean-up, construction, and fundraising.

To negate Seattle's offense, Cone needs to provide the kind of seven- or eight-inning stellar effort that highlighted the Yankees' resurgence during the last five weeks.