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   22062篇
  免费   141篇
  国内免费   1篇
财政金融   3830篇
工业经济   1218篇
计划管理   3474篇
经济学   4867篇
综合类   551篇
运输经济   47篇
旅游经济   85篇
贸易经济   5404篇
农业经济   304篇
经济概况   1806篇
信息产业经济   44篇
邮电经济   574篇
  2021年   29篇
  2020年   69篇
  2019年   88篇
  2018年   2374篇
  2017年   2131篇
  2016年   1304篇
  2015年   156篇
  2014年   194篇
  2013年   701篇
  2012年   592篇
  2011年   2100篇
  2010年   1958篇
  2009年   1682篇
  2008年   1669篇
  2007年   2007篇
  2006年   230篇
  2005年   517篇
  2004年   590篇
  2003年   689篇
  2002年   419篇
  2001年   194篇
  2000年   165篇
  1999年   135篇
  1998年   122篇
  1997年   106篇
  1996年   115篇
  1995年   96篇
  1994年   82篇
  1993年   86篇
  1992年   79篇
  1991年   69篇
  1990年   69篇
  1989年   67篇
  1988年   67篇
  1987年   63篇
  1986年   88篇
  1985年   98篇
  1984年   91篇
  1983年   89篇
  1982年   74篇
  1981年   76篇
  1980年   78篇
  1979年   58篇
  1978年   73篇
  1977年   82篇
  1976年   46篇
  1975年   48篇
  1974年   54篇
  1973年   36篇
  1972年   30篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
The seasonal patterns observed on Monday stock returns are still unexplained by different asset pricing models. We attempt to fill this gap in the finance literature by using the Fama-French (Journal of Financial Economics 33:3–56, 1993) risk factors to explain the Monday seasonal. The results in the study show that Monday returns are explained by risk factors such as the market return, the size of the firms, and the book-to-market ratios of firms.  相似文献   
992.
In weak institutional settings, autocrats barter political and economic concessions for support to remain in power and extract rents. Instead of viewing the favors’ beneficiaries, i.e. the elites, as an exogenous entity, we allow the king to decide whom to coopt provided the subjects are heterogeneous in the potential support—their strength—they could bring to the regime. While the ruler can select the elites on the basis of their personal characteristics, an alternative strategy consists in introducing some uncertainty in the cooptation process. The latter strategy allows the king to reduce the clients’ cooptation price since in the event of a revolution the likelihood of being included in the future body of elites is lower. We show that weak rulers are more likely to coopt the society’s strongest individuals, while powerful rulers diversify the composition of their clientele. Moreover, when agents value more future discounted outcomes, the king is more likely to randomly coopt subjects.  相似文献   
993.
Local governments invest in public infrastructure to develop their regions. When they depend on intergovernmental grants for local development and have opportunities to lobby upper-level governments for such grants, horizontal intergovernmental competition in lobbying activity may emerge in addition to competition over public infrastructure. This paper empirically examines the existence of these interactions between Japanese localities, by using data on the value of industrial parks as infrastructure provisions and on personnel interchanges between the central and local governments as a measure of lobbying activity. Our results suggest that a Japanese local government’s choice of the size of industrial parks and its invitation to central officers to act as a director on loan are positive responses to the neighboring local government’s policy choices. As the value of the industrial parks in a district is affected by the neighboring districts’ lobby activities and their industrial park values, we can interpret these results as evidence of inter-regional competition in these two dimensions, rather than control by the central government in this unitary state.  相似文献   
994.
A decision problem—allocating public research and development (R&D) funding—is faced by a planner who has ambiguous knowledge of welfare effects of the various research areas. We model this as a reverse portfolio choice problem faced by a Bayesian decision-maker. Two elements of the planner’s inferential system are developed: a conditional distribution of welfare ‘returns’ on an allocation, given stated preferences of citizens for the different areas, and a minimum risk criterion for re-allocating these funds, given the performance of a status quo level of funding. A case study of Canadian public research funds expended on various applications of agricultural biotechnology is provided. The decision-making methodology can accommodate a variety of collective expenditure and resource allocation problems.  相似文献   
995.
996.
997.
998.
999.
1000.
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