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   10940篇
  免费   341篇
财政金融   2201篇
工业经济   1075篇
计划管理   1908篇
经济学   2357篇
综合类   90篇
运输经济   134篇
旅游经济   210篇
贸易经济   1810篇
农业经济   591篇
经济概况   902篇
邮电经济   3篇
  2023年   70篇
  2021年   89篇
  2020年   195篇
  2019年   271篇
  2018年   276篇
  2017年   296篇
  2016年   269篇
  2015年   223篇
  2014年   313篇
  2013年   1271篇
  2012年   361篇
  2011年   415篇
  2010年   351篇
  2009年   447篇
  2008年   432篇
  2007年   363篇
  2006年   373篇
  2005年   332篇
  2004年   306篇
  2003年   333篇
  2002年   292篇
  2001年   270篇
  2000年   255篇
  1999年   225篇
  1998年   206篇
  1997年   217篇
  1996年   178篇
  1995年   174篇
  1994年   163篇
  1993年   155篇
  1992年   139篇
  1991年   138篇
  1990年   124篇
  1989年   105篇
  1988年   96篇
  1987年   108篇
  1986年   83篇
  1985年   131篇
  1984年   164篇
  1983年   139篇
  1982年   119篇
  1981年   93篇
  1980年   103篇
  1979年   94篇
  1978年   72篇
  1977年   69篇
  1976年   70篇
  1975年   41篇
  1974年   54篇
  1973年   46篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
Reframing science and other local knowledge traditions   总被引:2,自引:0,他引:2  
David Turnbull 《Futures》1997,29(6):551-562
By recognizing science as a set of local practices it becomes possible to ‘decentre’ it and develop a framework within which all knowledge systems can be equitably compared. It is argued that all knowledge traditions are spatial in that they link people, sites and skills. In order to ensure the continued existence of the diversity of knowledge traditions rather than have them absorbed into the great imperialist archive we need to enable disparate knowledge traditions to work together through the creation of a third space in which the social organization of trust can be negotiated.  相似文献   
52.
53.
54.
55.
Right-sided endocarditis is uncommon and usually involves the tricuspid valve. It occurs primarily in intravenous drug uses, and patients having pacemakers, central lines, or congenital heart disease.  相似文献   
56.
57.
Conclusions This paper has found a significant and substantial negative relationship between inflation and economic growth in Germany. Thus, inflation substantially reduced the rate of productivity growth and output growth in Germany. German policymakers, especially the Bundesbank, have emphasized the importance of low inflation rates, and inflation in Germany has been less than in most OECD countries. As a result, Germany has benefitted from relatively high rates of economic growth. But had the Bundesbank succeeded in achieving zero inflation, the underlying rate of productivity growth would have been almost a third higher and output growth about a sixth higher.  相似文献   
58.
Human Capital, Trade, and Economic Growth. — Human capital, because of its special role in innovative activity and technological progress, has formed the bedrock of the new theories of endogenous growth. However, it not only serves as an engine of growth but also as a productive input along with labor and physical capital. In this study, the authors find evidence of the importance of both roles of human capital. They also find that the relationship between growth and the external effects of human capital vary according to trade regime. When literacy rates are relatively high, open economies grow about 0.65 to 1.75 percentage points more than closed economies.  相似文献   
59.
Reforming Hungarian Agricultural Trade Policy: A Quantitative Evaluation. — In this paper, the authors quantitatively assess the consequences for Hungary of: (i) removing its quantitative import restraints in agriculture, (ii) removing the export subsidy program in agriculture, and (iii) adopting an EU-type “CAP” system in Hungary. The consequences are estimated through the use of a small open economy computable general equilibrium model for Hungary, calibrated to the year 1990. The tariff equivalent of the import licenses was estimated through a detailed price comparisons study, the first of its kind for Hungary. Import protection, export subsidies and a potential CAP system would contribute significantly to the Government's fiscal problems.  相似文献   
60.
Based on a rough path foundation, we develop a model-free approach to stochastic portfolio theory (SPT). Our approach allows to handle significantly more general portfolios compared to previous model-free approaches based on Föllmer integration. Without the assumption of any underlying probabilistic model, we prove a pathwise formula for the relative wealth process, which reduces in the special case of functionally generated portfolios to a pathwise version of the so-called master formula of classical SPT. We show that the appropriately scaled asymptotic growth rate of a far reaching generalization of Cover's universal portfolio based on controlled paths coincides with that of the best retrospectively chosen portfolio within this class. We provide several novel results concerning rough integration, and highlight the advantages of the rough path approach by showing that (nonfunctionally generated) log-optimal portfolios in an ergodic Itô diffusion setting have the same asymptotic growth rate as Cover's universal portfolio and the best retrospectively chosen one.  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