首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   137966篇
  免费   3322篇
  国内免费   1篇
财政金融   25872篇
工业经济   11757篇
计划管理   21939篇
经济学   29300篇
综合类   1445篇
运输经济   1013篇
旅游经济   2556篇
贸易经济   23876篇
农业经济   6169篇
经济概况   17099篇
信息产业经济   7篇
邮电经济   256篇
  2021年   849篇
  2020年   1661篇
  2019年   2443篇
  2018年   2361篇
  2017年   2553篇
  2016年   2765篇
  2015年   2143篇
  2014年   3471篇
  2013年   15678篇
  2012年   4283篇
  2011年   4206篇
  2010年   3797篇
  2009年   4416篇
  2008年   3957篇
  2007年   3282篇
  2006年   3639篇
  2005年   3595篇
  2004年   3178篇
  2003年   2945篇
  2002年   2919篇
  2001年   2653篇
  2000年   2566篇
  1999年   2470篇
  1998年   2307篇
  1997年   2369篇
  1996年   2220篇
  1995年   2005篇
  1994年   2032篇
  1993年   1996篇
  1992年   2035篇
  1991年   1917篇
  1990年   1812篇
  1989年   1680篇
  1988年   1621篇
  1987年   1611篇
  1986年   1693篇
  1985年   2458篇
  1984年   2328篇
  1983年   2114篇
  1982年   1976篇
  1981年   1910篇
  1980年   1878篇
  1979年   1801篇
  1978年   1633篇
  1977年   1628篇
  1976年   1379篇
  1975年   1284篇
  1974年   1198篇
  1973年   1203篇
  1972年   902篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
Using a sample of Australian Multi-sector trusts we examine selectivity and market timing performance and extend the analysis to include the relatively new measure of volatility timing. This is of particular relevance to our data set, as high levels of volatility persistence are prevalent in Australia. In addition we consider the stability, asymmetry and seasonality of the various performance and risk measures. A survivorship adjustment procedure is also employed in order to assess the impact of survivorship on selectivity, market timing and volatility timing performance.  相似文献   
83.
84.
Over the last decade, an increasing percentage of the profits reported by U.S. corporations were earned by their foreign subsidiaries and retained outside the United States resulting in the deferral of income taxes. The American Jobs Creation Act of 2004 provided a temporary federal tax incentive to remit such earnings, which resulted in the repatriation of $140 billion by the 30 firms comprising the Dow Jones Industrial Average. An analysis of the financial reporting disclosures made by these firms reveals that a tax expense was not fully recognized on a substantial portion of the earnings until repatriation because of an exception for foreign reinvestments deemed to be essentially permanent in duration. The implications of the currently acceptable accounting for undistributed foreign earnings are discussed as well as recommendations to improve the relevancy and reliability of the disclosures required for this exception to comprehensive recognition of deferred taxes.  相似文献   
85.
A perfectly competitive vintage-knowledge model of Schumpeterian growth is introduced to study the relation between growth, technology-lifetime, entry, and productivity-dispersion. The incentive to innovate is generated by the productivity-dispersion (latent in traditional vintage models) between new and old plants, rather than by monopoly rents. The model has a unique steady-state REE with endogenous growth. The endogenous extent of entry constitutes a buffer, dampening the effect of research-efficiency and completely neutralizing the effect of population size or population growth rates on per-capita income levels and growth rates. Variations of research-efficiency lead to a negative relation between growth and vintage-lifetime and a non-monotonic relation between growth and productivity-dispersion.  相似文献   
86.
We empirically investigate the interactions among hedging, financing, and investment decisions. We argue that the way in which hedging affects a firm's financing and investing decisions differs for firms with different growth opportunities. We find that high growth firms increase their investment, but not leverage, by hedging. However, we also find that firms with few investment opportunities use derivatives to increase their leverage.  相似文献   
87.
The current progress of electrification in Russia is clearly insufficient compared with G8 countries. At the same time, economy sectors have a high potential for energy saving. The electricity consumption of households depends on their cash income and the growth rate of electricity tariffs.  相似文献   
88.
89.
90.
If actively managed mutual funds suffer from diminishing returns to scale, funds should alter investment behavior as assets under management increase. Although asset growth has little effect on the behavior of the typical fund, we find that large funds and small‐cap funds diversify their portfolios in response to growth. Greater diversification, especially for small‐cap funds, is associated with better performance. Fund family growth is related to the introduction of new funds that hold different stocks from their existing siblings. Funds with many siblings diversify less rapidly as they grow, suggesting that the fund family may influence a fund's portfolio strategy.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号