There are useful tests of stability for the case of a linear system.

For a manager, it is a useful test to ask yourself whether you'd have to fire someone if actions under consideration were ever found out.

A useful test that has usually been done in a laboratory is the measurement of blood HbA1c levels.

But many Democrats think such a vote could be a useful test.

It has been neglected, although it is a useful clinical test.

A one or two-year suspension of the amendment would serve as a useful test to see what happens.

It is also a useful test to investigate acute abdominal pain.

"Could not this recent phenomenon serve as a useful test for us Japanese in the process of integrating our society into the international community?"

In fact, as many as 70 to 80 percent of problems are undetected by this useful but limited test.

This is the most useful test for diagnosing Hirschsprung's disease.