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New Keynesian model in which households have Epstein–Zin preferences with time‐varying risk aversion and the central bank has a time‐varying inflation target can match the dynamics of nominal bond prices in the U.S. economy well. The model generates a large steady‐state term spread and its fitting errors for bond yields are comparable to those obtained from a nonstructural three‐factor model, and one‐third smaller than in models with a constant inflation target or risk aversion. Including data on interest rates has large effects on variance decompositions, making investment technology shocks much less important than found in other recent papers.  相似文献   
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通过引入模仿参数δ来衡量R&D容易被模仿的程度,对Joanna Poya-go-Theotoky(1998)的研究进行了拓展,验证了其基本结论的稳健性。此外,通过引入二次R&D成本函数,研究发现,混合双寡头与私人双寡头情况下的社会福利的比较是不确定的,除了依赖创新规模P以外,还取决于模仿参数d,即——(1)对于任意的d,创新规模越大,私人双寡头越倾向于占优混合双寡头,混合双寡头仅在创新规模较小的时候可能优于私人双寡头;(2)对于创新规模比较小的R&D,只有同时具备较容易的模仿程度,混合双寡头才会优于私人双寡头;(3)在不完全模仿(d≠1)的情况下,在R&D越来越容易被模仿的过程中,利率越高(低),私人双寡头优于混合双寡头的最低P值先上升(下降)后下降(上升)。  相似文献   
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Can price dispersion be associated with higher levels of welfare? To answer we compare two economies that differ only in the way prices are formed. In the first, sellers post a unique price–quantity pair, with no price dispersion. In the second, sellers post a quantity only and let prices be determined ex post by realized demand, resulting in price dispersion. We show that while agents trade lower quantities when prices are dispersed (an intensive margin effect), they also trade more often (an extensive margin effect). At low inflation, the extensive margin dominates making agents better off with price dispersion.  相似文献   
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Visually impaired consumers often suffer one of the worst marketplace stresses when processing product information. Despite there being around 314 million blind or visually impaired people worldwide, today's marketplace does not yet adequately address these stresses. This study develops and tests a theoretical model of how visually impaired consumers cope in marketplace engagement and discusses how companies and policymakers can help to increase marketplace engagement.  相似文献   
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Despite the recent interest of historians in retailing and distribution, little attention has been paid to fairs. It has often been assumed that by 1800 they were mainly occasions for entertainment. Using a range of sources and focusing mainly on the north midlands, this article argues that many fairs remained significant during the eighteenth century for agricultural marketing, some business and financial transactions, and retailing. By the early nineteenth century, rapidly changing economic conditions, coupled with changed attitudes, threatened these traditional roles and fairs had to adapt or face inevitable decline.  相似文献   
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To reduce the level of tax evasion, a shift of taxation away from income tax and towards a consumption tax has been proposed in Australia. This paper shows that for such a shift to maintain revenue but not induce trade unions to raise their wage demands, it is necessary that the income tax threshold be increased. Numerical examples of desirable tax packages are given.  相似文献   
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IAN GREER 《劳资关系》2008,47(4):602-624
This paper traces the emergence of social movement unionism in Hamburg, Germany, as labor's channels of influence have broken down and economic pressures have intensified. Trade unionists have responded to the privatization of the municipal hospitals by mobilizing members and building coalitions around issues beyond their members’ immediate interests, including democracy and public service quality. Although the loss of union influence has facilitated social movement unionism in much of West Germany, economic crisis has had a demobilizing effect in the east.  相似文献   
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