Standard courses in economics talk about the law of demand and supply, where prices are determined to equate the two. Joseph Stiglitz: The 99 Percent Wakes Up Joseph E. Stiglitz May 1, 2012. Those ships he speaks of equate to jobs at shipyards, the planes to jobs at Boeing/Lockeed/etc.
An exercise stress test is designed to find out if one or more of the coronary arteries feeding the heart contain fatty deposits (plaques) that block a blood vessel 70% or more. Additional testing is often required to confirm the test result. Test result.
They also show your heart valves and the movement of your heart muscle. Doctors use both types of stress tests to look for signs that your heart isn't getting enough blood flow during exercise. Abnormal test results may be due to coronary heart disease (CHD) or other factors, such as poor physical fitness.