Efforts are also being made to deploy similar measures to other cross border vectors including: 1  Pedestrian radiation portal monitoring. 2  Air freight radiation portal monitoring. 3  Crane based radiation portal monitoring. 4  Air luggage radiation portal monitoring. 5  Railway radiation portal monitoring.
All of these factors are macroeconomic factors that may increase the aggregate demand. Monetary policies cause increases in aggregate demand because the central bank of a country uses this particular economic factor as a tool to manipulate the spending of the citizens in a country.
Changes in aggregate demand are represented by shifts of the aggregate demand curve. An illustration of the two ways in which the aggregate demand curve can shift is provided in Figure . A shift to the right of the aggregate demand curve. from AD 1 to AD 2, means that at the same price levels the quantity demanded of real GDP has increased.