The program aims at long-term, systematic and thorough measurements of clouds, radiation, aerosols, surface energy fluxes and chemistry in the Arctic.

It is the systematic measurement, comparison with a standard, monitoring of processes and an associated feedback loop that confers error prevention.

It is the systematic measurement of differential light sensitivity in the visual field by the detection of the presence of test targets on a defined background.

The systematic measurement of pesticides, metals and other substances in cells or body fluids is a big advance in the way environmental health studies are done, Dr. Jackson said.

The original motivation for the development of national accounts and the systematic measurement of employment was the need for accurate measures of aggregate economic activity.

Because there is no meteorological centre in Nathu La, systematic measurements of meteorological data (such as temperature and rainfall) are not available for the region.

Some modern writers have criticised this approach on the grounds that Rumford's experiments in no way represented systematic quantitative measurements.

Cognitive chronometry refers to the systematic measurement of response time as a means of illuminating either mental operations or mental associations.

A "feedback loop" is the central means of control and timely, systematic measurement is the chief means of providing useful feedback.