1.   As accuracy and speed increase, the pad is shown for shorter intervals of time.

2.   The objectives of immature followers will be reviewed at shorter intervals than those of mature workers.

3.   But dissenters say that technology and other forces are accelerating this process, that children are exposed to a host of remarkably different experiences at shorter intervals.

4.   The European brands have been busy introducing new cars and trucks at shorter intervals, often in growing market segments.