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   23174篇
  免费   500篇
财政金融   4093篇
工业经济   1632篇
计划管理   4014篇
经济学   5443篇
综合类   246篇
运输经济   181篇
旅游经济   357篇
贸易经济   3854篇
农业经济   1156篇
经济概况   2621篇
信息产业经济   3篇
邮电经济   74篇
  2023年   109篇
  2021年   157篇
  2020年   290篇
  2019年   465篇
  2018年   507篇
  2017年   545篇
  2016年   524篇
  2015年   361篇
  2014年   570篇
  2013年   2450篇
  2012年   790篇
  2011年   828篇
  2010年   707篇
  2009年   813篇
  2008年   736篇
  2007年   647篇
  2006年   619篇
  2005年   541篇
  2004年   473篇
  2003年   488篇
  2002年   435篇
  2001年   515篇
  2000年   467篇
  1999年   420篇
  1998年   479篇
  1997年   429篇
  1996年   429篇
  1995年   364篇
  1994年   371篇
  1993年   362篇
  1992年   369篇
  1991年   382篇
  1990年   349篇
  1989年   256篇
  1988年   264篇
  1987年   269篇
  1986年   250篇
  1985年   360篇
  1984年   356篇
  1983年   333篇
  1982年   288篇
  1981年   287篇
  1980年   283篇
  1979年   278篇
  1978年   226篇
  1977年   183篇
  1976年   183篇
  1975年   164篇
  1974年   149篇
  1973年   148篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
21.
22.
The historic focus of new products research has been on the ability of new products to enhance the profitability and competitive position of the innovating firm. In this article, Timothy Devinney shows that there exists an overlooked and potentially significant side effect associated with new product innovations: financial risk changes. He reports that significant financial risk changes occurred in approximately 50% of the new product announcements he examined. The magnitude of these financial risk changes translates into overestimates or underestimates of the firm's cost of capital by 17% to 18% and is strongly and positively related to the size of the firm and the firm's new product innovation activity.  相似文献   
23.
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   
24.
25.
26.
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   
27.
28.
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   
29.
30.
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