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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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MARKET STRUCTURES The manner in which markets or industries are organized, based largely on the number of participants in the market or industry and the extent of market control of each participant. Perfect competition represents the benchmark market structure that contains a large number of participants on both sides of the market, and no market control by any firm. Three market structure models with varying degrees of market control on the supply side of the market are: monopoly, monopolistic competition, and oligopoly. Three lesser known market structures with varying degrees of market control on the demand side of the market are: monopsony, oligopsony, and monopsonistic competition.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time searching for a specialty store hoping to buy either a printer that works with your stockpile of ink cartridges or income tax software. Be on the lookout for rusty deck screws.
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This isn't me! What am I?
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Lombard Street is London's equivalent of New York's Wall Street.
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"Success is going from failure to failure without a loss of enthusiasm. " -- Winston Churchill, British statesman
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EGARCH
Exponential Generalized Autoregressive Conditional Heteroskedasticity
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