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   48407篇
  免费   1573篇
  国内免费   839篇
财政金融   3420篇
工业经济   1915篇
计划管理   8364篇
经济学   10760篇
综合类   6627篇
运输经济   514篇
旅游经济   1126篇
贸易经济   6690篇
农业经济   4327篇
经济概况   7075篇
信息产业经济   1篇
  2024年   150篇
  2023年   612篇
  2022年   695篇
  2021年   1147篇
  2020年   1435篇
  2019年   1138篇
  2018年   996篇
  2017年   1239篇
  2016年   1196篇
  2015年   1383篇
  2014年   2783篇
  2013年   3815篇
  2012年   3883篇
  2011年   4944篇
  2010年   3770篇
  2009年   3226篇
  2008年   3641篇
  2007年   3187篇
  2006年   3075篇
  2005年   2269篇
  2004年   1595篇
  2003年   1186篇
  2002年   864篇
  2001年   830篇
  2000年   527篇
  1999年   352篇
  1998年   200篇
  1997年   162篇
  1996年   115篇
  1995年   92篇
  1994年   55篇
  1993年   38篇
  1992年   22篇
  1991年   8篇
  1990年   8篇
  1989年   6篇
  1988年   8篇
  1987年   8篇
  1986年   5篇
  1985年   27篇
  1984年   34篇
  1983年   23篇
  1982年   29篇
  1981年   15篇
  1980年   15篇
  1979年   5篇
  1978年   2篇
  1977年   3篇
  1973年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
The hazard rate of investment is derived within a real‐option model, and its properties are analysed so as to directly study the relation between uncertainty and investment. Maximum likelihood estimates of the hazard are calculated using a sample of multinational enterprises (MNEs) that invested in Central and Eastern Europe over the period 1990–98. Employing a standard, non‐parametric specification of the hazard, our measure of uncertainty has a negative effect on investment, but the reduced‐form model is unable to control for nonlinearities in the relationship. The structural estimation of the option‐based hazard is instead able to account for the nonlinearities and exhibits a significant value of waiting, although the latter is independent of our measure of uncertainty. This finding supports the existence of alternative channels through which uncertainty can affect investment.  相似文献   
92.
This study shows that firms in the pharmaceutical industry experience decreasing returns to scale in R & D as the level of R & D expenditures rises. The paper presents the results of our study of the innovative output of 16 pharmaceutical firms over a 19 year period. Given the strong correlation between R & D budgets and firm size, our study suggests the wave of mergers in the industry may yield less innovative productivity than managers expect.  相似文献   
93.
从自然资源投入产出关系分析入手 ,论述了资源产业的两大产业群———资源开发业与资源再生产业 ,揭示了其内外经济关系。  相似文献   
94.
The supreme obstacle for sustainable development of natural resources is the scarecity, bottleneck. So how to promote the sustainable utilizing and increase the using efficiency of natural resources is worth studying. This paper suggests that we should improve the model and means of evaluating method and value management based on th~ theory of natural resource compensation. This paper discusses the User Cost Method based on the microeeonomicaspect which can change the evaluating method for natural resources. From the perspective of value managemen model, we should use the User Cost Method to realize the linkage and integration of micro and macro eompensation for natural resources. Based on the evaluating and aecounting idea User Cost Method, this paper presents a theo. retical framework to harmonize and link micro and macro compensation for natural resources. At present, we should seek the new approach and method to manage natural resources, so can we realize the capitalization managemen focusing on the vahte management for natural resources.  相似文献   
95.
We examine investment behavior among exchange-listed Korean manufacturing firms before and after the 1997 financial crisis using firm-level panel data. Starting with the standard Q-theory of investment, we augment it by allowing for a sales accelerator and the possibility of cash constraints, categorizing firms based on their age, size and affiliation to an industrial conglomerate (i.e., chaebol). We find that Tobin’s Q is a robust determinant of investment in a pooled sample for 1992–2001, but that it became more important for small firms and less important for chaebol-affiliated firms after the crisis. Investment by chaebol firms also became more sensitive to the availability of internal cash balances after the crisis. We interpret this as reflecting a shift in the Korean economy to a stronger market orientation after the crisis and to a business climate in which the quality of potential projects became more important relative to capital market imperfections in determining the destination of investment funds.  相似文献   
96.
段学慧 《特区经济》2008,(4):188-189
相互制保险在农业保险领域有着明显的优势。然而,相互制保险管理制度上的缺陷及其与农业保险的矛盾制约着相互制农业保险的发展。目前,在我国合作意识不强、农村合作经济组织发育不健全的情况下,开展相互制农业保险还有一定困难。因此,要开展相互制农业保险,必须选择合适的范围和地区,并对相互制保险进行制度创新,为相互制农业保险提供财政补贴,建立再保险机制,加强引导,减少行政干预。  相似文献   
97.
利用面板数据对中国东、中、西部的进口额和GDP增长关系进行的实证研究。在短期内,GDP增长对进口额影响最小是中部地区,在长期,西部GDP增长对进口额影响最大。中国经济增长对拉动世界经济增长起了十分重要的作用,中国经济增长减速也会影响全球经济。  相似文献   
98.
论述了一种基于OLE自动化技术、利用Excel的OLE对象实现Excel与dBase数据库之间进行通信的方法,并给出了在VB下实现该技术的主要代码。  相似文献   
99.
加入世贸组织 ,将对我国国有商业银行的银行业务、优质客户、人力资源和资产质量造成严重的冲击 ,为此 ,国有商业银行必须采取五个方面的对策 :增强银行实力、开展业务创新、提高服务质量、完善人力资源管理制度和加强资产质量管理。  相似文献   
100.
The oil exporting countries have experienced a relatively continuous fall in GDP per capita over the last 30 years. This is in spite of benefiting from a more than average of the rest of the world investment rate. The findings of this paper, report a lower level of financial development for the oil economies when compared with the rest of the world. We will show in this paper that the higher rate of investment of the oil economies can be explained mainly by the oil revenues and surprisingly, financial development has a net dampening effect on investment for these economies. The paper also shows that the weakness of financial institutions, contributes to the poor performance of economic growth of the oil economies and the weakness of financial institutions might be associated with the dominant role of government in total investment and the weakness of private sector.  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