全文获取类型
收费全文 | 50092篇 |
免费 | 1193篇 |
国内免费 | 4篇 |
专业分类
财政金融 | 9933篇 |
工业经济 | 3719篇 |
计划管理 | 8074篇 |
经济学 | 11129篇 |
综合类 | 668篇 |
运输经济 | 315篇 |
旅游经济 | 832篇 |
贸易经济 | 7886篇 |
农业经济 | 2435篇 |
经济概况 | 6144篇 |
信息产业经济 | 1篇 |
邮电经济 | 153篇 |
出版年
2021年 | 270篇 |
2020年 | 533篇 |
2019年 | 799篇 |
2018年 | 929篇 |
2017年 | 1016篇 |
2016年 | 1020篇 |
2015年 | 634篇 |
2014年 | 1054篇 |
2013年 | 5018篇 |
2012年 | 1429篇 |
2011年 | 1540篇 |
2010年 | 1334篇 |
2009年 | 1529篇 |
2008年 | 1419篇 |
2007年 | 1315篇 |
2006年 | 1189篇 |
2005年 | 1034篇 |
2004年 | 1026篇 |
2003年 | 1031篇 |
2002年 | 1024篇 |
2001年 | 1001篇 |
2000年 | 1052篇 |
1999年 | 958篇 |
1998年 | 902篇 |
1997年 | 939篇 |
1996年 | 895篇 |
1995年 | 850篇 |
1994年 | 823篇 |
1993年 | 847篇 |
1992年 | 898篇 |
1991年 | 881篇 |
1990年 | 728篇 |
1989年 | 654篇 |
1988年 | 642篇 |
1987年 | 626篇 |
1986年 | 675篇 |
1985年 | 991篇 |
1984年 | 909篇 |
1983年 | 855篇 |
1982年 | 794篇 |
1981年 | 824篇 |
1980年 | 800篇 |
1979年 | 734篇 |
1978年 | 642篇 |
1977年 | 569篇 |
1976年 | 493篇 |
1975年 | 523篇 |
1974年 | 423篇 |
1973年 | 410篇 |
1972年 | 310篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
91.
92.
Richard McGregor Krishna Guha 《海外经济评论》2008,(4):27-28
2007年中国贸易顺差上升近50%,达到创纪录的2620亿美元,但在去年最后3个月,进口增速均超过了出口增速,表明存在争议的外汇储备大幅上升期可能正渐近结束。 相似文献
93.
Option-Implied Risk Aversion Estimates 总被引:4,自引:0,他引:4
Using a utility function to adjust the risk‐neutral PDF embedded in cross sections of options, we obtain measures of the risk aversion implied in option prices. Using FTSE 100 and S&P 500 options, and both power and exponential‐utility functions, we estimate the representative agent's relative risk aversion (RRA) at different horizons. The estimated coefficients of RRA are all reasonable. The RRA estimates are remarkably consistent across utility functions and across markets for given horizons. The degree of RRA declines broadly with the forecast horizon and is lower during periods of high market volatility. 相似文献
94.
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
95.
Castaneda Marco A.; Garen John; Thornton Jeremy 《Jnl. of Law, Economics, and Organization》2008,24(1):215-246
This article investigates theoretically and empirically theeffects of competition for donors on the behavior of nonprofitorganizations. Theoretically, we consider a situation in whichnonprofit organizations use donations to produce some commodity,but the use of donations is only partially contractible. Themain results of the model indicate that an increase in competition(i) decreases the fraction of donations allocated to perquisiteconsumption and (ii) increases the fraction of donations allocatedto promotional expenditures. Moreover, the effects of competitionare magnified by the ability to contract on the use of donations.These hypotheses are tested with data on the expenditures ofnonprofit organizations in a number of subsectors where competitionis primarily local. We use across–metropolitan statisticalareas' variation to measure differences in competition and proxycontractibility by the importance of tangible assets, whichare more easily observed by donors. The estimated effects ofcompetition and contractibility are consistent with our model. 相似文献
96.
A. S. Nekrasov S. A. Voronina V. V. Semikashev 《Studies on Russian Economic Development》2008,19(2):136-144
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
97.
98.
99.
100.
This article investigates the determinants of real estate investment trusts (REIT) portfolio investment and institutional REIT ownership using multivariate Tobit regressions. We contend that many institutional investors take larger positions in more liquid assets like REIT stocks, as compared with private real estate equities, because of liquidity considerations. Consistent with this contention, we find that liquidity constraints are significantly related to REIT portfolio investment by institutional investors. We also find that institutional investors have different preferences for REIT stocks than do other investors; they generally prefer larger, more liquid REIT stocks. 相似文献