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   25213篇
  免费   142篇
财政金融   4421篇
工业经济   1389篇
计划管理   3881篇
经济学   5663篇
综合类   568篇
运输经济   54篇
旅游经济   166篇
贸易经济   5766篇
农业经济   334篇
经济概况   2491篇
信息产业经济   44篇
邮电经济   578篇
  2020年   78篇
  2019年   126篇
  2018年   2408篇
  2017年   2182篇
  2016年   1331篇
  2015年   198篇
  2014年   227篇
  2013年   1042篇
  2012年   635篇
  2011年   2157篇
  2010年   2012篇
  2009年   1725篇
  2008年   1702篇
  2007年   2007篇
  2006年   257篇
  2005年   543篇
  2004年   630篇
  2003年   714篇
  2002年   432篇
  2001年   223篇
  2000年   214篇
  1999年   154篇
  1998年   188篇
  1997年   161篇
  1996年   165篇
  1995年   121篇
  1994年   128篇
  1993年   142篇
  1992年   158篇
  1991年   162篇
  1990年   123篇
  1989年   117篇
  1988年   98篇
  1987年   114篇
  1986年   133篇
  1985年   159篇
  1984年   135篇
  1983年   168篇
  1982年   136篇
  1981年   123篇
  1980年   143篇
  1979年   128篇
  1978年   97篇
  1977年   109篇
  1976年   102篇
  1975年   105篇
  1974年   95篇
  1973年   73篇
  1972年   62篇
  1971年   61篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Personalien     
  相似文献   
62.
December 1, 1996 a new law was implemented in Portugal to gradually reduce the standard workweek from 44 to 40 h. We study how this mandatory reduction affected employment through job creation and job destruction. There was considerable regional, sectoral and firm-size variation in the share of workers who were affected by the working hours reduction. We exploit this variation to assess the impact of the workweek reduction. We find evidence that the working hours reduction had a positive effect on employment through a fall in job destruction.  相似文献   
63.
64.
65.
In this study, we investigate the effects of stock short-sale constraints on options trading by exploiting two US Securities and Exchange Commission rule changes under Regulation SHO: Rule 203 (locate and close-out requirements) and Rule 202T (temporary removal of short-sale price tests). We find that stock short selling activities decrease (increase) significantly after Rule 203 (Rule 202T) implementation, supporting the validity of Rule 203 (Rule 202T) as an exogenous increase (decrease) in short-sale constraints. Options volume increases significantly after Rule 203 went into effect and the result is more pronounced among firms with lower levels of institutional ownership and smaller options bid-ask spreads. Therefore, the evidence from Rule 203 suggests that investors may use options as substitutes for stock short sales when short selling is less feasible or more costly due to the locate and delivery requirements. In contrast, we find no significant change in the options trading volume of pilot stocks during the pilot program of Rule 202T. Overall, our results indicate that the impact of short-sale constraints on options trading varies with the types of constraints affected.  相似文献   
66.
67.
The main purpose of this paper is to empirically model the influence of macroeconomic and financial variables on the performance of risk capital in the US. We start our investigation using a static long-run equilibrium model. In contrast to previous studies, we analyze the effect of several factors simultaneously within the framework of a vector error correction model (VECM). This allows us to study short- and long-term interactions to overcome the problem of endogeneity, and to discover causal mechanisms. The results show that the value of venture capital investments is positively related to industrial production, the exit channel Nasdaq, and the long-term interest rate. However, the value of venture capital investments is negatively related to the short-term interest rate. According to the short-term dynamics, VEC Granger causality confirms that only industrial production influences venture capital performance, while venture capital returns Granger causes Nasdaq performance.  相似文献   
68.
69.
This study examines the effectiveness of macroprudential policies in reducing the banks' risk during the COVID-19 pandemic and compares these results with the systemic banking crises years. Based on a sample of 624 banks across 40 countries during the period 2006–2020, we find that loosening capital-aimed macroprudential policies effectively reduced banks' risk during the COVID-19 pandemic, while this behavior led to increased risk during the systemic crises years. In contrast, tightening the remaining macroprudential policies during the systemic crises years and during the pandemic proved effective in reducing banks' risk. Furthermore, we show that the magnitude of the impact of macroprudential policies was stronger during the systemic crisis than that during the pandemic. Finally, we show that the results are driven by the capital requirement prudential policy, both during the systemic crisis and the COVID-19 pandemic, although the conservation buffer and the leverage limit also contributes to the ineffectiveness of these policies during the COVID-19 pandemic. The banks' leverage and loan growth also play an enhancing role of the effects of the macroprudential policies.  相似文献   
70.
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