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   2040篇
  免费   65篇
财政金融   412篇
工业经济   152篇
计划管理   305篇
经济学   426篇
综合类   20篇
运输经济   30篇
旅游经济   63篇
贸易经济   413篇
农业经济   110篇
经济概况   172篇
邮电经济   2篇
  2023年   9篇
  2021年   15篇
  2020年   30篇
  2019年   37篇
  2018年   44篇
  2017年   54篇
  2016年   41篇
  2015年   26篇
  2014年   42篇
  2013年   301篇
  2012年   53篇
  2011年   71篇
  2010年   67篇
  2009年   57篇
  2008年   49篇
  2007年   56篇
  2006年   55篇
  2005年   59篇
  2004年   44篇
  2003年   60篇
  2002年   54篇
  2001年   53篇
  2000年   52篇
  1999年   25篇
  1998年   42篇
  1997年   53篇
  1996年   53篇
  1995年   28篇
  1994年   39篇
  1993年   30篇
  1992年   31篇
  1991年   16篇
  1990年   30篇
  1989年   22篇
  1988年   24篇
  1987年   34篇
  1986年   29篇
  1985年   35篇
  1984年   38篇
  1983年   35篇
  1982年   29篇
  1981年   22篇
  1980年   21篇
  1979年   20篇
  1978年   16篇
  1977年   16篇
  1976年   10篇
  1975年   10篇
  1973年   13篇
  1972年   9篇
排序方式: 共有2105条查询结果,搜索用时 46 毫秒
241.
Do international trade and finance flow together? In a variety of theoretical models, trade and finance can be shown to have the potential to be substitutes or complements, so the matter must be resolved empirically. We study trade and financial flows from the United Kingdom from 1870 to 1913 and the United States in the interwar years. These were the two major capital exporters and key financial centers in each era. We find that trade and finance were robustly correlated for each case. We consider simultaneity issues. We also discuss evidence from the British Empire which casts doubt on the idea that trade is a punishment device in the event of a default.  相似文献   
242.
We find that China's P/E ratio is comparable to that of the U.S. S&P 1500 index, a broad based index covering large, middle, and small capitalization firms. We provide an explanation as to why China's seemingly low P/E ratio is not surprising in light of the economic growth that it has experienced. Specifically, we show that (i) the P/E ratio is negatively associated with earnings volatility in both the Chinese and U.S. stock markets with an economically significant magnitude; and (ii) historical earnings volatility is considerably higher in China than in the U.S. Higher earnings volatility in China offsets higher growth prospect in setting the P/E ratio, making its P/E ratio much closer to what is observed empirically than otherwise implied by its growth rate.  相似文献   
243.
This paper presents an inference approach for dependent data in time series, spatial, and panel data applications. The method involves constructing t and Wald statistics using a cluster covariance matrix estimator (CCE). We use an approximation that takes the number of clusters/groups as fixed and the number of observations per group to be large. The resulting limiting distributions of the t and Wald statistics are standard t and F distributions where the number of groups plays the role of sample size. Using a small number of groups is analogous to ‘fixed-b’ asymptotics of [Kiefer and Vogelsang, 2002] and [Kiefer and Vogelsang, 2005] (KV) for heteroskedasticity and autocorrelation consistent inference. We provide simulation evidence that demonstrates that the procedure substantially outperforms conventional inference procedures.  相似文献   
244.
The renewed attention to the strengthening of the internal market of the European Community heralded by the Single European Act of 1986 is likely to produce a quantum leap in pressure group activity in Brussels, as business interests line up to exert their influence on the many harmonisation measures that are in the pipeline. How great an influence have European pressure groups exerted up till now? In what spheres has this influence been felt most strongly?  相似文献   
245.
The idea that information and communication technologies (ICT) can provide a means to regenerate deprived urban areas is still a relatively new concept in the United Kingdom. There is in fact little empirical evidence to demonstrate what actually happens when ICT projects are designed with regeneration in mind. A case study of ICT regeneration is examined here, one funded through the Single Regeneration Budget and operational in an urban area in the North East of England. What became apparent during this study is how the changing policy environment meant other types of ICT initiative came on-stream before the project could firmly establish a position within its community. The authors challenge the logic of this form of activity and demonstrate that even when there seems to be a need to support ICT-led development the sustainability of such projects is highly problematic.  相似文献   
246.
247.
This study examines the impact that the publication of ratings of boards of directors by the business press has on stockholder wealth. We report findings from an event study of price reactions to the publication of Business Week's 1996 and 1997 ratings of boards of directors of U.S. corporations. As hypothesized, favorable ratings resulted in significant positive abnormal returns after controlling for market effects and confounding events, with only novel information explaining statistical variance. Contrary to expectations, unfavorable ratings also resulted in positive abnormal returns. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
248.
Protection of intellectual property embedded in self-replicating biological innovations, such as genetically modified seed, presents two problems for the innovator: the need for copy protection of intellectual property and price competition between new seed and reproduced seed. We consider three regimes in two periods with asymmetric information: short-term contracts, biotechnological protection, and long-term contracts. We find that piracy imposes more intense competition for seed sales than does durability alone. Technology protection systems yield highest firm profit and long-term contracts outperform short-term contracts. Farmers prefer, in order, long-term, short-term, and biotechnical protection. Depending on monitoring cost, long-term contracts may be socially preferred to short-term contracts, with both preferred to biotechnical protection.  相似文献   
249.
250.
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