Based on this improved data set, researchers have also refined the estimate for HIV prevalence at the end of 2003.

In time, however, and with practice, researchers and scholars have refined their approaches and methods, to yield better results.

Meanwhile, researchers have refined their methods of examining hazards.

The researchers refine the product into its medically useful form.

This tends to be a blunt instrument so researchers refine the process with cluster analysis.

Although the concept is straightforward, researchers have been refining the details, first looking for metals that maximize the magnetocaloric effect.

Later researchers have refined Dake's measures and have applied them to a wide variety of environmental and technological risks.

After identifying dozens of 'candidate strengths', the researchers needed to find a way to further refine their list.

Scientifically, that was the most important of their findings, because it helped other researchers refine their understanding of atomic structure.

To quickly test numbers to determine if they were prime, the researchers refined a class of software algorithm known as a fast Fourier transform.