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   18896篇
  免费   380篇
财政金融   3572篇
工业经济   1296篇
计划管理   2945篇
经济学   4142篇
综合类   443篇
运输经济   101篇
旅游经济   222篇
贸易经济   3453篇
农业经济   617篇
经济概况   2445篇
信息产业经济   4篇
邮电经济   36篇
  2023年   73篇
  2021年   84篇
  2020年   191篇
  2019年   252篇
  2018年   982篇
  2017年   963篇
  2016年   668篇
  2015年   208篇
  2014年   359篇
  2013年   1606篇
  2012年   500篇
  2011年   1064篇
  2010年   949篇
  2009年   902篇
  2008年   851篇
  2007年   941篇
  2006年   336篇
  2005年   363篇
  2004年   407篇
  2003年   444篇
  2002年   334篇
  2001年   284篇
  2000年   299篇
  1999年   292篇
  1998年   300篇
  1997年   263篇
  1996年   227篇
  1995年   219篇
  1994年   235篇
  1993年   239篇
  1992年   262篇
  1991年   252篇
  1990年   200篇
  1989年   178篇
  1988年   154篇
  1987年   153篇
  1986年   160篇
  1985年   231篇
  1984年   246篇
  1983年   237篇
  1982年   208篇
  1981年   193篇
  1980年   165篇
  1979年   163篇
  1978年   153篇
  1977年   128篇
  1976年   123篇
  1975年   136篇
  1974年   98篇
  1973年   97篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
131.
132.
133.
S. 《De Economist》1888,37(1):234-242
  相似文献   
134.
135.
The paper considers procedural aspects of land potential estimation when forming tourist and recreation territories allotted for tourist and recreation zones.  相似文献   
136.
The general design for the real-time electricity market presented in this paper optimizes and prices both real and reactive power simultaneously in an AC setting, where all assets—generation, load and transmission—are allowed to bid and are financially settled at the locational price times energy consumed or produced. The result is that transmission lines are compensated for both capacity and admittance, providing incentives for efficient operation of transmission-related assets such as FACTS devices, if price-taking behavior is assumed. Losses are incorporated into the design and become an operating cost for transmission. The market design is shown to be revenue neutral and, under some assumptions, nonconfiscatory.   相似文献   
137.
Graphical models provide a powerful and flexible approach to the analysis of complex problems in genetics. While task-specific software may be extremely efficient for any particular analysis, it is often difficult to adapt to new computational challenges. By viewing these genetic applications in a more general framework, many problems can be handled by essentially the same software. This is advantageous in an area where fast methodological development is essential. Once a method has been fully developed and tested, problem-specific software may then be required. The aim of this paper is to illustrate the potential use of a graphical model approach to genetic analyses by taking a very simple and well-understood problem by way of example.  相似文献   
138.
We present a theory of capital structure based on the power of shareholders, bondholders and managers to control the incentive conflicts in large corporations. The manager–owner conflict produces a trade-off between inefficiency in the low state and rents in the high state, and the shareholder–bondholder conflict produces under-investment as in Myers [Journal of Financial Economics 19 (1997) 147]. Since managers and bondholders both prefer more efficient actions in the low state, the two conflicts are interdependent. With risk-less levels of debt, there are no shareholder–bondholder agency costs, but managerial control over the incentive-setting process produces excessive rents. With risky debt, shareholders focus more on returns in the high state so that shareholder–bondholder agency costs increase but managerial rents decrease. Efficient levels of debt holder protection facilitate a reduction in manager–owner agency costs that outweighs shareholder–bondholder agency costs, and are decreasing in firm performance. The results are consistent with the separate empirical results relating control to both compensation and leverage, and suggest how future studies can be integrated.  相似文献   
139.
We consider the design of ambient taxes forrisk-neutral and risk-averse polluters whenpolluters and the regulatory agency haveasymmetric information about environmentalrelationships and probabilities associatedwith random events. Unlike prior work, we showthat under these conditions, optimal ambienttaxes must be firm-specific, and accompaniedby additional incentives to influencepolluters' choices of abatement techniques.  相似文献   
140.
This paper considers the likely impact of e–commerce and the Internet on the Australian economy. It surveys literature on the extent and development of e–commerce in Australia and its impact on the shape of the Australian economy. Evidence for the 'renewal' of the Australian economy is presented and examined, especially the question of whether Australia has enjoyed increases in productivity as a result of the production and/or use of new information and communications technology. Australia is seen as broadly well placed to benefit from the Internet and e–commerce. Traditionally isolated from the world's main economic centres and reliant on commodities in international trade, the advent of the Internet is ideal for a country in transition to a service–orientated, knowledge–based economy. As the composition of Australia's exports becomes more service–orientated and knowledge–intensive, traditional trading links with Europe and North America may strengthen relative to those with Asia.  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