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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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LEAKAGES Non-consumption uses of aggregate income. The three uses of income grouped under the heading of leakages are saving, taxes, and imports. Leakages subtract from the core circular flow containing consumption, production, and income. The injections-leakages model is a Keynesian economics analysis that combines leakages with injections (investment expenditures, government purchases and exports) to identify the equilibrium level of aggregate production and income.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway seeking to buy either a large, stuffed kitty cat or a cross-cut paper shredder. Be on the lookout for slightly overweight pizza delivery guys.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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"There is a way to look at the past. Don't hide from it. It will not catch you - if you don't repeat it." -- Pearl Bailey, Singer and Actress
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MSE
Mean Square Error
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