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   450篇
  免费   4篇
财政金融   96篇
工业经济   24篇
计划管理   78篇
经济学   137篇
综合类   2篇
运输经济   2篇
旅游经济   3篇
贸易经济   51篇
农业经济   16篇
经济概况   45篇
  2024年   10篇
  2023年   11篇
  2021年   5篇
  2020年   21篇
  2019年   25篇
  2018年   24篇
  2017年   22篇
  2016年   20篇
  2015年   11篇
  2014年   20篇
  2013年   45篇
  2012年   22篇
  2011年   25篇
  2010年   23篇
  2009年   17篇
  2008年   19篇
  2007年   22篇
  2006年   11篇
  2005年   10篇
  2004年   10篇
  2003年   12篇
  2002年   3篇
  2001年   7篇
  2000年   8篇
  1999年   3篇
  1998年   2篇
  1997年   2篇
  1996年   6篇
  1995年   2篇
  1993年   5篇
  1990年   3篇
  1989年   3篇
  1988年   1篇
  1986年   2篇
  1985年   7篇
  1984年   3篇
  1983年   5篇
  1982年   2篇
  1981年   3篇
  1977年   1篇
  1974年   1篇
排序方式: 共有454条查询结果,搜索用时 0 毫秒
341.
    
This article models the US equity premium as a regime‐switching process where the regimes are dependent on economic variables. To characterise the economic regimes, we employ the dimension reduction technique of a principal components analysis to extract business cycle signals from a set of observed macroeconomic variables. We use these conditioning agents to infer the ex ante economic regime. We then test a dynamic asset allocation strategy, which invests in equity and cash on the basis of the predicted regimes. This timing strategy is shown to outperform a simple buy and hold strategy on a risk‐adjusted basis.  相似文献   
342.
We examine whether firms with greater financial statement complexity are more likely to meet or beat analysts’ earnings expectations. We proxy for financial statement complexity using the firm's industry and year adjusted accounting policy disclosure length. Firms with more complex financial statements are more likely to just beat expectations than just miss expectations. Firms with complex financial statements appear to use expectations management to beat expectations, but do not use earnings management. Corroborating these findings, we find analysts rely more on management guidance for more complex firms. Firms with complex financial statements are also more likely to have analysts exclude items from actual “street earnings,” but tests suggest this strategy is not specifically used by complex firms to beat expectations. The effect we document is specific to analyst forecasts and not to other alternative benchmarks.  相似文献   
343.
    
Kenya is one of the few countries in Sub‐Saharan Africa to experience an impressive rise in fertiliser use following a series of input market reforms in the early 1990s. Two major consequences of these reforms were declining fertiliser marketing margins and distances between farmers and fertiliser dealers. We quantify the effects of these changes on commercial fertiliser use and maize production in Kenya by estimating fertiliser demand and maize supply response functions using nationwide household survey data. Our results indicate that between 1997 and 2010, the estimated 27% reduction in real fertiliser prices that can be attributed to falling marketing margins associated with market reforms led to a 36% increase in nitrogen use on maize fields and a 9% increase in maize production resulting from both yield and acreage effects. On the other hand, decreasing distances to fertiliser retailers from the perspective of a given household did not appear to raise fertiliser use or maize supply, although a comparison across households using average distances over the panel indicate that those closer to retailers do apply more fertiliser on their maize fields.  相似文献   
344.
Degradation of natural resources in Haiti has been a growing concern to foresters, environmentalists, and local populations. Various approaches based on “participatory”, “fines and taxes” and “command and control” regulations, have been unsuccessfully implemented to persuade farm households to adopt conservation measures. Negative impacts on the welfare of farmers limit the efficiency of these approaches for forest conservation. This paper investigates alternative solutions to the problem of deforestation of Haiti using linear programming (LP) models. More specifically, this study evaluates the role of various policy instruments on large-income farm households and low-income farm households’ welfare and forest conservation in Haiti. Data from 243 farmers inside the Forêt of the Forêt des Pins Reserve are used in the empirical analysis. Results suggest that agricultural subsidies tied to environmental conservation would promote a more sustainable resource use in Forêt des Pins Reserve.  相似文献   
345.
The authors examined whether incumbent starting quarterbacks in the National Football League (NFL) performed better after their teams drafted another quarterback in the first round of the preceding draft. There was some evidence that quarterbacks exhibited slightly improved performance under these conditions. However, the impact on performance was small. There was little evidence of opportunistic behavior by quarterbacks, but quarterbacks may perform slightly better in the first year of a new contract. The authors conclude that quarterbacks are already exerting at or near their maximum effort level and thus their performances are unlikely to be greatly impacted by dismissal threats or contract details.  相似文献   
346.
    
Nonprofit organizations that engage in social enterprises can have difficulty reconciling the social service and business identities of their organization. In this exploratory qualitative interview study, we examine how social enterprises affect this organizational identity tension and how executive directors of nonprofits manage these multiple identities. Findings suggest that identity tension varied dependent upon the timing of conception of the social enterprise. Nonprofit leaders used different approaches to identity management and identity marketing for social enterprises: after conception and social enterprises: at conception. Initial guidance is provided about how nonprofits engaged in social enterprises can manage identity tension issues.  相似文献   
347.
We show that the vast majority of investors ignore value-relevant accruals information when it is first released, but that investors who initiate trades of at least 5,000 shares tend to transact in the proper direction. These investors trade on accruals information only when the previously-announced earnings signal is non-negative. Unconditionally, those investors initiating the smallest trades appear to respond to accruals in the wrong direction, but further investigation suggests this behavior is explained by their attraction to attention-grabbing stocks. Finally, we find that those who trade on accruals information have insufficient market power to mitigate the accruals anomaly.  相似文献   
348.
Home Bias at Home: Local Equity Preference in Domestic Portfolios   总被引:21,自引:0,他引:21  
The strong bias in favor of domestic securities is a well-documented characteristic of international investment portfolios, yet we show that the preference for investing close to home also applies to portfolios of domestic stocks. Specifically, U.S. investment managers exhibit a strong preference for locally headquartered firms, particularly small, highly levered firms that produce nontraded goods. These results suggest that asymmetric information between local and nonlocal investors may drive the preference for geographically proximate investments, and the relation between investment proximity and firm size and leverage may shed light on several well-documented asset pricing anomalies.  相似文献   
349.
    
We examine matched point and density forecasts of output growth, inflation and unemployment from the ECB Survey of Professional Forecasters. We construct measures of uncertainty from individual histograms, and find that the measures display countercyclical behavior and have increased across all forecast horizons since 2007. We also derive measures of forecast dispersion and forecast accuracy, and find that they are not reliable proxies for uncertainty. There is, however, evidence of a meaningful co‐movement between uncertainty and aggregate point predictions for output growth and unemployment. These results are robust to changes in the composition of the survey respondents over time. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
350.
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