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VON THUNEN MODEL: A model of land use develop by Johann von Thunen that illustrates the trade off between land values and the distance from a central point of attraction. While originally applied to agricultural land use, the von Thunen model is commonly used to explain urban land use patterns. Two primary conclusions from the model are (1) that land values decrease as distance from the central point of attraction increases and (2) that different land use activities are contained in concentric rings equal distance from the central point of attraction based on the weight (or transportation cost) of the activity.
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FOUR-SECTOR AGGREGATE EXPENDITURES LINE A graphical depiction of the relation between aggregate expenditures by the four macroeconomic sectors (household, business, government, and foreign) and the level of aggregate income or production. The four-sector aggregate expenditures line combines consumption expenditures, investment expenditures, government purchases, and net exports. The slope of this aggregate expenditures line is based on the marginal propensity to consume, adjusted for marginal propensities of the other expenditures that are assumed to be induced when constructing the line. This is one of three aggregate expenditures lines based on the number of sectors included. The others are the two-sector aggregate expenditures line and the three-sector aggregate expenditures line.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club looking to buy either a how-to book on meeting people or clothing for your pet iguana. Be on the lookout for fairy dust that tastes like salt.
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This isn't me! What am I?
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
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"The man who does not read good books has no advantage over the man who cannot read them. " -- Mark Twain
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QJE
Quarterly Journal of Economics
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