收费全文 | 1601篇 |
免费 | 8篇 |
财政金融 | 353篇 |
工业经济 | 126篇 |
计划管理 | 298篇 |
经济学 | 357篇 |
综合类 | 9篇 |
运输经济 | 8篇 |
旅游经济 | 34篇 |
贸易经济 | 209篇 |
农业经济 | 89篇 |
经济概况 | 126篇 |
2024年 | 10篇 |
2023年 | 12篇 |
2021年 | 12篇 |
2020年 | 24篇 |
2019年 | 35篇 |
2018年 | 29篇 |
2017年 | 39篇 |
2016年 | 36篇 |
2015年 | 25篇 |
2014年 | 31篇 |
2013年 | 177篇 |
2012年 | 63篇 |
2011年 | 53篇 |
2010年 | 69篇 |
2009年 | 60篇 |
2008年 | 56篇 |
2007年 | 43篇 |
2006年 | 41篇 |
2005年 | 36篇 |
2004年 | 37篇 |
2003年 | 40篇 |
2002年 | 39篇 |
2001年 | 44篇 |
2000年 | 37篇 |
1999年 | 41篇 |
1998年 | 35篇 |
1997年 | 25篇 |
1996年 | 32篇 |
1995年 | 22篇 |
1994年 | 21篇 |
1993年 | 14篇 |
1992年 | 14篇 |
1991年 | 21篇 |
1990年 | 12篇 |
1989年 | 18篇 |
1988年 | 11篇 |
1987年 | 13篇 |
1986年 | 15篇 |
1985年 | 17篇 |
1984年 | 18篇 |
1983年 | 9篇 |
1982年 | 13篇 |
1981年 | 14篇 |
1980年 | 17篇 |
1979年 | 14篇 |
1978年 | 15篇 |
1977年 | 13篇 |
1976年 | 10篇 |
1975年 | 13篇 |
1973年 | 11篇 |
Decomposing a share of stock into components that can be traded separately allows investors to choose between the different investment attributes constituting the underlying share. An investor who desires only cash dividend income may buy only DIVS, and another who values capital appreciation but not current income can purchase only the residual claim.
Derivatives seem to go through a developmental process that is analogous to the biological phenomenon of natural selection and adaptation. The engines that drive this evolutionary process are changing domestic and international market conditions, international tax and regulatory arbitrage, and, of course, the financial innovators who learn from their own mistakes, and from the experience of others. These innovators continually develop new products that represent improvements over the old, if only by their ability to adhere more closely to the guidelines laid down by the regulators. The histories of PRIMEs and SCOREs, of USUs, and, most recently, of DIVS, OWLS and RISKS together provide a nice illustration of this developmental process. 相似文献
Short sale orders account for a substantial portion of trading volume in recent years. This paper develops a sequential trade model with constrained short selling to derive the effect on prices when the market maker can observe short selling in the order flow. The model predicts that market quotes will adjust differently to short sales and regular sales. Furthermore, the model shows that the probability of informed trading is impacted both by the level of short sale constraints and the intensity of actual short sale trades. Simulation evidence confirms that estimates of the probability of informed trade are improved when accounting for past short selling activity. The results demonstrate the information benefits of short selling transparency.
相似文献