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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions 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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CONSTANT RETURNS TO SCALE A given proportional change in all resources in the long run results in the same proportional change in production. Constant returns to scale exists if a firm increases ALL resources--labor, capital, and other inputs--by 10 percent, and output also increases by 10 percent. This is one of three returns to scale. The other two are increasing returns to scale and decreasing returns to scale.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time lost in your local discount super center seeking to buy either a how-to book on building remote controlled airplanes or an extra large beach blanket. Be on the lookout for broken fingernail clippers.
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This isn't me! What am I?
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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"The greatest use of life is to spend it for something that will outlast it." -- William James, psychologist
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ACRS
Accelerated Cost Recovery System
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