Ever the tinkerers, scientists have been trying to improve upon Mendeleev's version of the table.
Mr Mackenzie, meanwhile, has been trying to improve weaving machinery and increase productivity.
True, Japanese banks have been trying to improve their credit-risk management.
Some states, notably California, have for years been trying to improve their voting systems.
We were frustrated because we had been trying to improve things, and that all disappeared quickly.
The Bahraini government has been trying to improve its image by pointing the finger at Iran.
As the election nears, it has been trying to improve its credibility on the issue.
Honeywell has been trying to improve productivity across its four divisions and consolidate its businesses to bolster profit.
It has also been trying to improve airport signs and runway markings to help pilots find their way.
I.B.M. has been trying to improve the performance of its chip-making unit, also known as microelectronics.
Any university trades on its reputation, and in recent years, Kentucky has been trying to improve its own.
