11.   How, for instance, does one measure the impact of having Harvard Business Review subscribers in the White House?

12.   If he succeeds, economists would have a hard time measuring the impact.

13.   If that much impact can be measured with less than one Bible study a month, think what a total Christian immersion might spark.

14.   Inside is an accelerometer, a device that measures impact in terms of gravity in increments known as g forces.

15.   It is probably too early to accurately measure the impact of the new efforts.

16.   Johnson is suddenly in demand because he is among the few social scientists who have tried to measure the impact of religion on social problems.

17.   Johnson will measure that impact and BellSouth will decide whether the system will be permanent.

18.   Researchers who have identified potential compounds against specific disease seek to measure their impact on the human body.

19.   Some of the variables in measuring the impact of the fare increase will be also be geographic.

20.   Television advertising is becoming more popular even though publishers have not yet devised a way to measure their impact on book sales.