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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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MARGINAL COST OF SEARCH

The incremental cost incurred by additional search effort is the marginal cost of search. Marginal cost of search, also termed marginal search cost, is comparable to marginal cost of short-run production analysis. Marginal cost of search increases with an increase in search effort and is represented by the marginal cost of search curve. This is one half of the efficient information search decision. The other is marginal benefit of search.

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ORANGE REBELOON
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Today, you are likely to spend a great deal of time searching for a specialty store trying to buy either a how-to book on surfing the Internet or a computer that can play music and burn CDs. Be on the lookout for mail order catalogs with hidden messages.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"Life is not a 'brief candle.' It is a splendid torch that I want to make burn as brightly as possible before handing it on to future generations. "

-- Bernard Shaw, journalist

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