11.   Switched hubs can improve network efficiency by more than an order of magnitude.

12.   The company has concentrated on encouraging worker involvement and improving efficiency.

13.   The company is taking steps to improve efficiency and reduce costs.

14.   The probability score can also improve the efficiency of the parsing algorithm by pruning out low-probability alternatives.

15.   Their sealing efficiency should be improved by increased depth.

16.   Thermal efficiency was improved by laying the area with insulating tiles.

17.   These included waste reduction, paper and cardboard recycling and improving energy efficiency.

18.   This guide provides advice on ways of improving energy efficiency.

19.   To improve the efficiency of the analysis each rule in the grammar is ordered based on its frequency of use.

20.   We need to look very carefully at ways of improving our efficiency.