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作者:BOMBERGER, WA
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作者:ADAMS, JD
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作者:GREIF, A
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作者:KLEMPERER, P
摘要:I suggest a new model of demand for variety that explains. why competing firms may choose very similar product fines: if firms offer different product ranges, some consumers use multiple suppliers to increase variety, and since these consumers' purchases will be sensitive to the difference in firms' prices, the market may be fairly competitive. If, instead, firms offer identical product ranges, each consumer purchases from one firm only, because of costs of using additional suppliers, so the m...
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作者:COHEN, WM; KLEPPER, S
摘要:Using firm data disaggregated by industry, we establish a set of regularities in the distribution of firm R&D intensities within manufacturing industries. We show how a simple probabilistic process, in which chance influences a key unobserved determinant of R&D and firm size conditions the returns to R&D, can account for these regularities and other features of the distributions. The model provides a unified, noncausal explanation of a series of long-observed relationships across mean R&D inte...
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作者:NEVEN, DJ
作者单位:Universite Libre de Bruxelles
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作者:FEENSTRA, RC; MARKUSEN, JR; ZEILE, W
作者单位:University of Colorado System; University of Colorado Boulder
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作者:LEVINE, R; RENELT, D
作者单位:Harvard University
摘要:A vast literature uses cross-country regressions to search for empirical linkages between long-run growth rates and a variety of economic policy, political, and institutional indicators. This paper examines whether the conclusions from existing studies are robust or fragile to small changes in the conditioning information set. We find that almost all results are fragile. We do, however, identify a positive, robust correlation between growth and the share of investment in GDP and between the in...
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作者:BURDA, MC; GERLACH, S
作者单位:Centre for Economic Policy Research - UK; Brandeis University
摘要:The deterioration of the U.S. merchandise trade deficit in the 1980's fell mostly on durable goods. Using a representative-agent model, we show that the key distinction between the trade balance in nondurables and durables is the role of intertemporal prices in the latter. A decrease in intertemporal prices associated, for example, with an exchange-rate overvaluation should therefore be expected to worsen the trade balance in durables more than in nondurables. This interpretation of the compos...
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作者:YANG, XK; SHI, HL