Use cases are useful because they help identify useful levels of design work.

This includes identifying four increasingly levels and the related methods.

You could carry out surveys at different times of the day or week to identify different levels of energy use.

These standards identify levels for pollutants, including mercury, that must be met in order to protect human health, fish, and wildlife.

Subsequent studies identified high levels of nitrogen, particularly in western areas of the Sound, as the greatest threat to water quality and marine life.

The court identifies possible levels of abstraction that can be defined.

Clearly semantic models based on attribute-value pairs fail to identify privileged levels in the hierarchy.

Audio compression can also be achieved by identifying acceptable levels of redundancy and stripping them out.

These changes will also help deter fraud, waste and abuse and identify levels of improper payments.

By contrast it is relatively difficult to identify or assess levels of operational risk and its many sources.