全文获取类型
收费全文 | 608篇 |
免费 | 40篇 |
专业分类
财政金融 | 125篇 |
工业经济 | 60篇 |
计划管理 | 96篇 |
经济学 | 118篇 |
综合类 | 5篇 |
运输经济 | 17篇 |
旅游经济 | 59篇 |
贸易经济 | 92篇 |
农业经济 | 35篇 |
经济概况 | 41篇 |
出版年
2023年 | 5篇 |
2022年 | 5篇 |
2021年 | 10篇 |
2020年 | 21篇 |
2019年 | 30篇 |
2018年 | 30篇 |
2017年 | 35篇 |
2016年 | 35篇 |
2015年 | 23篇 |
2014年 | 27篇 |
2013年 | 103篇 |
2012年 | 29篇 |
2011年 | 29篇 |
2010年 | 26篇 |
2009年 | 22篇 |
2008年 | 18篇 |
2007年 | 22篇 |
2006年 | 14篇 |
2005年 | 13篇 |
2004年 | 6篇 |
2003年 | 13篇 |
2002年 | 19篇 |
2001年 | 4篇 |
2000年 | 11篇 |
1999年 | 8篇 |
1998年 | 4篇 |
1997年 | 7篇 |
1996年 | 6篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1992年 | 5篇 |
1991年 | 5篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1986年 | 2篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1982年 | 3篇 |
1981年 | 6篇 |
1980年 | 5篇 |
1979年 | 2篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1974年 | 4篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1968年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有648条查询结果,搜索用时 15 毫秒
91.
We examine differences in information content between order submission sizes and trade sizes by U.S. equity traders. Increasing (decreasing) order submission (trade) size is reflective of information. The result suggests that better-informed traders want to trade in a large size, but that they engage in stealth trading practices or break larger orders into smaller sizes in order to conceal information. While prior studies tend to narrowly focus on trade executions at the market-centre level, our findings indicate that order submission size varies significantly from trade size and that both sizes are informative about future prices, albeit in an inverse manner. 相似文献
92.
We examine factors that influence decisions by U.S. equity traders to execute a string of orders, in the same stock, in the same direction, around the same time. Order splitting is more likely to occur when traders submit larger‐size orders and when market depth and trading activity are lower. Order splitters demand liquidity more and pay higher trading costs, but their overall performance is better. When controlling for execution time, split orders are more informative than single orders. Our results suggest that order splitting arises from a variety of factors, including informational differences, order and trader characteristics, and market conditions. 相似文献
93.
In this paper, we examine whether nominal stock price can help to explain the ex-dividend day anomaly where stock prices drop by less than the dividend amount on the ex-dividend date. We find that stocks with lower nominal prices have ex-dividend day price drops that are more consistent with theoretical predictions based on an efficient market. After controlling for factors that have been previously documented to influence ex-dividend day stock price behavior, price-drop-to-dividend ratios are closer to one for lower priced stocks. To further explore this phenomenon, we examine the change in the price-drop-to-dividend ratio around stock splits. Firms that split their shares have a larger price-drop-to-dividend ratio after the split, and companies that reverse split their shares have a smaller price-drop-to-dividend ratio after the split. Our evidence indicates that ex-dividend day stock price behavior is influenced by the nominal price of a share and that this relation could also influence the decision to split a firm’s shares. 相似文献
94.
M. Ryan Haley 《Annals of Finance》2017,13(3):341-353
Recent research reports that optimal portfolio selection models often perform worse than equal-weight naive diversification in out-of-sample testing. This paper extends this line of inquiry by comparing the out-of-sample performance of the equal-weight naive strategy to the out-of-sample performance of five alternative naive strategies, each of which derives from a simple heuristic that does not require any optimization. Out-of-sample portfolio performance is assessed by mean, standard deviation, skewness, and Sharpe ratio; k-fold cross validation is used as the out-of-sample testing mechanism. The results indicate that the proposed naive heuristic rules exhibit strong out-of-sample performance, in most cases superior to the equal-weight naive strategy. These findings are consequential for at least two reasons: first, if these simple heuristic-based rules outperform the equal-weight naive strategy, then by transitivity they can outperform the mean–variance- and shortfall-optimal portfolio rules that have been shown in the literature to be inferior to the equal-weight naive rule, which further emphasizes the out-of-sample fragility of “optimal” methods; and second, among naive diversification strategies, some appear more robust in out-of-sample testing than others, hence the proposed methods may be useful when forming mixed portfolio selection models wherein a naive strategy is combined with an optimal strategy to improve performance. 相似文献
95.
96.
This paper examines competition between exchange traded funds (ETFs) that hold nearly identical portfolios of securities. We provide evidence that incumbent‐fund liquidity is negatively affected when a new ETF is added to an asset class. The degradation in liquidity is even more severe whenever both funds follow the same benchmark. We also document a decline in primary‐market activity for the incumbent ETFs after the arrival of new competitors. Furthermore, increasing the number of funds in an asset class does not put downward pressure on fund management fees. Thus, the deterioration in market quality may not be offset by decreasing costs of fund ownership. 相似文献
97.
Catherine Bobtcheff Thomas Chaney Christian Gollier 《The GENEVA Risk and Insurance Review》2016,41(1):73-106
In this paper, we discuss the systemic relevance of the insurance sector. Systemic risk is defined as the propensity of a financial institution to be undercapitalised when the financial system as a whole is undercapitalised. By the law of large numbers, traditional lines of insurance with idiosyncratic non-catastrophic risks cannot be systemic. On the contrary, undiversified insurers specialised in activities whose insured risks are highly correlated with GDP are systemic. In the life insurance sector, some contractual clauses such as unhedged minimum guarantees and free options to surrender raise the chance of systemic relevance. On the contrary, life insurers satisfying the classic solvency capital requirements contribute to the liquidity of financial markets thanks to the long-termist approach of their portfolio management. Finally, using historical data in the U.S. on the contribution of different sectors to the aggregate volatility of the economy, we show that investment banking is almost twice as volatile as aggregate GDP, while insurance is one fifth as volatile as aggregate GDP. The insurance sector thus appears to be a stabilising force of the economy. 相似文献
98.
Daniel J. Ryan 《International Advances in Economic Research》1998,4(4):305-317
A real open-economy model is constructed in which the government's commitment to a future fiscal expansion is not credible.
Government credibility (measured by the growth rate of the probability that the expansion will occur) becomes a parameter
of the system and appears directly in the eigenvalues. Simulations are performed demonstrating the effect of credibility on
GNP, the exchange rate, and other variables. Lastly, the optimum credibility is determined which minimizes a loss function
associated with deviations from full employment. 相似文献
99.
Chris Ryan 《International Journal of Tourism Research》2000,2(2):119-131
This paper argues that tourist experiences are essentially individualistic, although it is possible to discern consensual realties. It follows the viewpoint that positivistic research methodologies contain limitations in not being able to define the nature of individual tourist experience, and suggests that phenomenographic analysis may be one approach that permits both a revelation of individual experience while permitting model building of the shared consensus of what is actually happening. More tentatively it is suggested that, when allied with the use of current developments in software, such as that of CATPAC™, a post‐positivist paradigm of research results. Some results of research using this approach are indicated. Copyright © 2000 John Wiley & Sons, Ltd. 相似文献
100.
There is an increasing global interest in sustainable aviation technologies as a result of concerns associated with the carbon-intensive nature of the industry and the imminence of reaching peak oil. Available options such as biofuels, liquid hydrogen and electric propulsion will not only impact on the design and functionality of commercial airplanes, but also will affect the entire industry from supply through to operation and maintenance. However, on account of the global spread and international nature of aviation, in addition to the lock-in effect associated with existing fossil-fuel driven technology, the present aviation paradigm is not well equipped for a massive or rapid technological transition. This paper first provides an overview of selected available propulsion options, as well as their possible impact on the aviation infrastructure. It then sets out to identify the existing regime players in the aviation transition arena as a means to provide an overview of potential path trajectories, with a view to assessing how airport owners and other salient regime players can either facilitate or hinder the transition to alternative and less carbon-intensive technologies. 相似文献