全文获取类型
收费全文 | 13261篇 |
免费 | 64篇 |
专业分类
财政金融 | 2537篇 |
工业经济 | 1039篇 |
计划管理 | 2118篇 |
经济学 | 2768篇 |
综合类 | 178篇 |
运输经济 | 89篇 |
旅游经济 | 173篇 |
贸易经济 | 1906篇 |
农业经济 | 717篇 |
经济概况 | 1786篇 |
信息产业经济 | 2篇 |
邮电经济 | 12篇 |
出版年
2020年 | 124篇 |
2019年 | 164篇 |
2018年 | 201篇 |
2017年 | 192篇 |
2016年 | 179篇 |
2015年 | 130篇 |
2014年 | 180篇 |
2013年 | 1173篇 |
2012年 | 279篇 |
2011年 | 323篇 |
2010年 | 298篇 |
2009年 | 346篇 |
2008年 | 327篇 |
2007年 | 282篇 |
2006年 | 256篇 |
2005年 | 295篇 |
2004年 | 244篇 |
2003年 | 281篇 |
2002年 | 224篇 |
2001年 | 265篇 |
2000年 | 253篇 |
1999年 | 249篇 |
1998年 | 243篇 |
1997年 | 252篇 |
1996年 | 276篇 |
1995年 | 251篇 |
1994年 | 242篇 |
1993年 | 200篇 |
1992年 | 225篇 |
1991年 | 241篇 |
1990年 | 209篇 |
1989年 | 174篇 |
1988年 | 173篇 |
1987年 | 143篇 |
1986年 | 197篇 |
1985年 | 272篇 |
1984年 | 261篇 |
1983年 | 259篇 |
1982年 | 225篇 |
1981年 | 236篇 |
1980年 | 210篇 |
1979年 | 222篇 |
1978年 | 196篇 |
1977年 | 170篇 |
1976年 | 141篇 |
1975年 | 139篇 |
1974年 | 136篇 |
1973年 | 109篇 |
1972年 | 107篇 |
1971年 | 99篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
We aim to tackle the longstanding debate on whether stock liquidity enhances or impedes firm innovation. This topic is of interest because innovation is crucial for firm‐ and national‐level competitiveness and stock liquidity can be altered by financial market regulations. Using a difference‐in‐differences approach that relies on the exogenous variation in liquidity generated by regulatory changes, we find that an increase in liquidity causes a reduction in future innovation. We identify two possible mechanisms through which liquidity impedes innovation: increased exposure to hostile takeovers and higher presence of institutional investors who do not actively gather information or monitor. 相似文献
992.
W. Simonsen 《Scandinavian actuarial journal》2013,2013(1-2):20-41
Abstract 7. The joint distribution of the moments a 11, a 22,…, ann and a 12, …, a 1n may be deduced explicitly in the case, in which the variates χ1, …, χ n in (1) are mutually uncorrelated. In this case we have for the population values of the moments: αμv = 0 for μ ═ v and, consequently, Aμv = 0 for μ ═ v, so that according to (6) λμv = 0 for μ ═ v; the distribution (5) of the moments αμv is then 相似文献
993.
We examine data for the year ended December 31, 1997 for 80 publicly traded property‐liability insurers that have Best financial strength ratings of their consolidated insurance‐operating subsidiaries. These firms employ a holding company structure, in which a parent owns the stock of multiple insurance‐operating subsidiaries. The operating subsidiaries prepare a consolidated annual report using the Statutory Accounting Principles (SAP), and an analogous set of financial statements based on the Generally Accepted Accounting Principles (GAAP) is released by the parent. We find that the financial characteristics important in determining ratings at the individual firm level—capitalization, liquidity, profitability, and size—are also important at the group level. Further, financial ratios from holding company statements are incrementally useful in the ratings' process, after group‐level ratios have been taken into account. Robustness tests based on a subsample of holding companies with minimal investment outside of the property‐liability industry reinforce our conclusion that parent company statements influence consolidated group ratings. However, our data do not allow us to separate the relative contribution of the GAAP model and underlying transactions to the ratings decision. 相似文献
994.
This paper examines the impact of deregulation on thedemand for casino gaming in Atlantic City. Specifically, the paper analyzes the impact ofexpanded operating hours and floor space devoted toslot machines. Using monthly win data between June1978 and July 1996, the analysis reveals that expandedfloor space had a significant, positive impact on win,resulting in an average monthly increase of over $2million. This shows the importance of developing aregulatory structure rigid enough to ensure thehonesty and integrity of the gaming industry, butflexible enough to allow management to respond tochanging market conditions. 相似文献
995.
996.
997.
998.
Roger W. Schmenner 《Journal of urban economics》1981,9(1):90-96
Rent gradients for manufacturing are estimated using actual rent and value figures for Cincinnati. Distance to the city center is found to be of no importance in explaining rent or value variations. 相似文献
999.
Clive W. J. Granger 《Oxford bulletin of economics and statistics》2003,65(Z1):689-701
The paper asks the question – as time series analysis moves from consideration of conditional mean values and variances to unconditional distributions, do some of the familiar concepts devised for the first two moments continue to be helpful in the more general area? Most seem to generalize fairly easy, such as the concepts of breaks, seasonality, trends and regime switching. Forecasting is more difficult, as forecasts become distributions, as do forecast errors. Persistence can be defined and also common factors by using the idea of a copula. Aggregation is more difficult but causality and controllability can be defined. The study of the time series of quantiles becomes more relevant. 相似文献
1000.