1 A urine culture test is done to identify the specific bacteria that are causing a urinary tract infection.2  Ideally, a sample of urine is collected by cystocentesis or by inserting a needle directly into the animalâs bladder. A urine culture test is done to identify the specific bacteria that are causing a urinary tract infection.
The multiplier effect is exploited by governments attempting to use fiscal stimulus policies to increase the general level of economic activity. This can be done in a period of recession or economic uncertainty, when unemployment of labor is high and other resources are underutilized.
The aggregate expenditure model (sometimes known as the multiplier model or Keynesian cross model) assumes a constant price level, and provides a graphical display of the effects of spending in the econ-omy. The basic idea here is that when Person #1 spends money, it becomes the income of Person #2.