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   30045篇
  免费   630篇
财政金融   5671篇
工业经济   2152篇
计划管理   4963篇
经济学   7030篇
综合类   375篇
运输经济   217篇
旅游经济   451篇
贸易经济   5232篇
农业经济   1392篇
经济概况   3105篇
信息产业经济   3篇
邮电经济   84篇
  2023年   139篇
  2021年   206篇
  2020年   369篇
  2019年   591篇
  2018年   612篇
  2017年   641篇
  2016年   656篇
  2015年   463篇
  2014年   690篇
  2013年   3180篇
  2012年   991篇
  2011年   1045篇
  2010年   923篇
  2009年   1043篇
  2008年   980篇
  2007年   873篇
  2006年   840篇
  2005年   763篇
  2004年   669篇
  2003年   692篇
  2002年   621篇
  2001年   661篇
  2000年   613篇
  1999年   547篇
  1998年   614篇
  1997年   553篇
  1996年   548篇
  1995年   478篇
  1994年   485篇
  1993年   461篇
  1992年   467篇
  1991年   474篇
  1990年   436篇
  1989年   331篇
  1988年   326篇
  1987年   354篇
  1986年   324篇
  1985年   499篇
  1984年   477篇
  1983年   466篇
  1982年   369篇
  1981年   386篇
  1980年   368篇
  1979年   359篇
  1978年   310篇
  1977年   285篇
  1976年   268篇
  1975年   225篇
  1974年   193篇
  1973年   201篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
This paper employs the optimality conditions for expected utility and mean-variance portfolio problems to examine the ambiguities associated with the security market line criterion both at a point in time and through time. At a point in time, we show that the security market line criterion can be irrelevant, even in meanvariance economies. In a multiperiod setting, we show that the analysis of performance based on portfolio choice is inconsistent with the analysis based on return generating models. Empirical work suggests that the inconsistency can lead to dramatically different estimates of a security's required return.  相似文献   
32.
Summary In The Netherlands public debt management is in the hands of the budgetary policy-maker, whose recourse to the capital market can exceed or fall short of the total borrowing requirement in order to absorb or create liquidity. The conduct of that policy since the early 1960's is analyzed in this paper, emphasizing the importance of medium-term control over the public finances as a prerequisite for the ability of debt management to make a flexible contribution to monetary policy. During the 1960's this condition was satisfied and debt management followed a stable countercyclical pattern which, however, was abandoned after the early 1970's as the public finances swung into substantial disequilibrium.The author thanks J. Boughton, L. Bovenberg, D. Hendry, P. Masson, J. Muellbauer, and the referees for comments on earlier versions. However, the views expressed are his alone and do not necessarily represent those of the International Monetary Fund.  相似文献   
33.
34.
35.
36.
A subclass of monotonic transferable utility (T.U.) games is studied: average monotonic games. These games are totally balanced. We prove that the core coincides with both the bargaining set à la Davis and Maschler and the bargaining set à la Mas-Colell. To obtain this result a technique based on reduced games is used. Journal of Economic Literature Classification Number: C71  相似文献   
37.
如今,全球都笼罩在经济衰退之中.如果下一个就要轮到贵公司,你该怎么办?当然你要尽力保证企业财务的稳定.但更重要的是,你还必须了解公司在衰退结束后的目标设计.如果你知道企业的发展方向和如何实现这一目标,那么衰退时期是改善公司相对战略地位的好时机.  相似文献   
38.
39.
The purpose of this study was to assess the basis behavior of the Live Cattle Futures contract at the Chicago Mercantile Exchange (CME) before and after the 1995 contract changes. Additionally, an alternative method of basis calculation utilizing weighted mean futures prices versus settlement futures prices was compared to determine which method provides a better representation of the basis level. Within a regression model with heteroskedascity error framework, we found that the level of nearby basis in the period after June 1995 has shifted lower and the average monthly open interest of net commercial long positions has substantially increased after the contract modifications. These empirical results are consistent with the notion that more long activity entered the market in response to the contract modifications. Additionally, an alternative (new) measure of basis calculation (cash price minus weighted mean futures price) produced similar results to two other commonly used measures. In conclusion, the 1995 contract changes have neither increased nor decreased the volatility of live cattle basis. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:557–590, 2004  相似文献   
40.
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