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   5819篇
  免费   475篇
财政金融   1826篇
工业经济   123篇
计划管理   543篇
经济学   2310篇
综合类   16篇
运输经济   2篇
旅游经济   18篇
贸易经济   194篇
农业经济   512篇
经济概况   750篇
  2024年   2篇
  2023年   37篇
  2022年   43篇
  2021年   66篇
  2020年   288篇
  2019年   294篇
  2018年   202篇
  2017年   227篇
  2016年   163篇
  2015年   213篇
  2014年   353篇
  2013年   525篇
  2012年   537篇
  2011年   737篇
  2010年   439篇
  2009年   406篇
  2008年   404篇
  2007年   418篇
  2006年   322篇
  2005年   190篇
  2004年   97篇
  2003年   78篇
  2002年   49篇
  2001年   33篇
  2000年   23篇
  1999年   19篇
  1998年   18篇
  1997年   20篇
  1996年   21篇
  1995年   21篇
  1994年   11篇
  1993年   4篇
  1991年   1篇
  1985年   11篇
  1984年   9篇
  1983年   7篇
  1982年   1篇
  1981年   1篇
  1980年   1篇
  1978年   3篇
排序方式: 共有6294条查询结果,搜索用时 15 毫秒
51.
International technology diffusion through FDI has been examined mainly at macro or industry level whereas micro studies have been concerned mostly with spillovers. Using recent data on the UK manufacturing firms, this paper uncovers evidence that acquisition FDI is an important channel of direct technology transfer from foreign multinationals to domestic exporters. This finding accords with the prediction of the internalisation theory of FDI which postulates that multinational firms transfer a range of intangible proprietary assets to their affiliates.  相似文献   
52.
A quarter-century after reunification, labor productivity in the states of eastern Germany continues to lag systematically behind the West. Persistent gaps in total factor productivity (TFP) are the proximate cause; conventional and capital-free measurements confirm a sharp slowdown in TFP growth after 1995. Strikingly, eastern capital intensity, especially in industry, exceeds values in the West, casting doubt on the embodied technology hypothesis. TFP growth is negatively associated with rates of investment expenditures. The stubborn East-West TFP gap is best explained by low concentration of managers, low startup intensity and the distribution of firm size in the East rather than R&D activities.  相似文献   
53.
本文介绍了基于VB6.0的MSComm通信控件相关理论,并以一个实例演示了MSComm控件的主要属性。  相似文献   
54.
This paper examines the bank lending relations of a large sample of technology and nontechnology firms that went public during the 1996–2000 period. We use a unique hand-collected data set to examine the characteristics of firms that establish pre- Initial Public Offering (IPO) bank lending relations and whether post-IPO performance is related to the existence and size of pre-IPO banking relations. We find that the majority of IPO firms have banking relations before they go public. Firms with banking relations are older, more profitable or, in the case of tech firms, have lower losses, and are more likely to have funding from venture capitalists than firms without banking relations. We also find that banks lent aggressively to technology firms in the sense that current earnings and cash flows were significantly less important in determining banking relations for technology firms than for nontechnology firms. Consistent with the importance of so-called soft information in lending decisions, we find that, controlling for ex ante observable risk measures, there is a positive and significant relation between improvements in post-IPO operating performance and the existence and size of pre-IPO banking relations. Overall, our results indicate that firms with the best current and future prospects establish banking relations. Our findings provide an explanation as to why investors could interpret lending relations as a positive signal of firm quality.  相似文献   
55.
This paper documents home Internet access, types of Internet access, connection speeds, and prices for basic home Internet in tribal areas of the United States. We find that the share of households with Internet access is 21 percentage points lower in tribal areas than in neighboring non-tribal areas. When compared to these non-tribal areas, download speeds, whether measured using fixed or mobile broadband networks, are approximately 75% slower in tribal areas, while the lowest price for basic Internet services in tribal areas is 11% higher. Regression techniques reveal that traditional cost factors such as terrain and population density fully explain the price gap but account for only a fraction of the tribal differences in Internet access and connection speeds. Income differences are strong predictors of Internet access but do not affect connection speeds. A sizable amount of the variation in the access and home connection gap between tribal and non-tribal is left unexplained. We conclude with a discussion of how federal broadband programs have penetrated Indian Country, how tribal-specific factors are related to the variation in Internet access within Indian Country, and the potential policy implications of our findings.  相似文献   
56.
57.
What motivates people in rural villages to share? We first elicit a baseline level of sharing using a standard, anonymous dictator game. Then using variants of the dictator game that allow for either revealing the dictator's identity or allowing the dictator to choose the recipient, we attribute variation in sharing to three different motives. The first of these, directed altruism, is related to preferences, while the remaining two are incentive-related (sanctions and reciprocity). We observe high average levels of sharing in our baseline treatment, while variation across individuals depends importantly on the incentive-related motives. Finally, variation in measured reciprocity within the experiment predicts observed ‘real-world’ gift-giving, while other motives measured in the experiment do not predict behavior outside the experiment.  相似文献   
58.
This paper presents microeconometric evidence on financing constraints for research and development activities in German small‐ and medium‐sized firms (SME). Special attention is paid to the role of public research and development (R&D) subsidies. For this purpose SMEs in West and East Germany are compared because these regions are very different in their supply of public R&D funding. The empirical evidence suggests that West German SMEs are financially constrained in their R&D activities by both internal and external resources. In East Germany, firms are not sensitive to external constraints, possibly due to high public R&D subsidies. The results show that R&D in East Germany is to a large extent driven by public subsidies and that the usual financial market mechanisms are dysfunctional with respect to R&D in this region.  相似文献   
59.
We analyse the impact of ownership and corporate control on firms’ investment using the 2001 survey of Yacoub et al. on Ukrainian firms. The model explains investment by output, financial and soft budget constraints, and corporate control (and ownership) categories potentially enjoying private benefits of control. We find that the corporate control model fits better than the ownership model, a negative relationship between state and employee control and firms’ investment, and evidence for the presence of soft budget constraints. A negative relationship between firms’ investment and the relative size of non‐monetary transactions strengthens the conclusion of private benefits of control impacting investment.  相似文献   
60.
We investigate why new, high-risk technologies can attract excessive and often unprofitable investment. We develop an equilibrium model in which rational, risk-averse agents overinvest in a risky technology, possibly to the point that its expected return is negative. Overinvestment results from relative wealth concerns which arise endogenously from the imperfect tradability of future endowments. Competition over future consumption leads to an indirect utility for wealth with “keeping up with the Joneses” properties that can induce herding. Because overinvestment increases with the risk of the technology, our model can explain why new, risky technological innovations may promote investment bubbles.  相似文献   
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