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   31204篇
  免费   402篇
  国内免费   1篇
财政金融   5359篇
工业经济   1974篇
计划管理   4986篇
经济学   7056篇
综合类   676篇
运输经济   108篇
旅游经济   223篇
贸易经济   6954篇
农业经济   714篇
经济概况   2936篇
信息产业经济   45篇
邮电经济   576篇
  2021年   94篇
  2020年   175篇
  2019年   226篇
  2018年   2506篇
  2017年   2275篇
  2016年   1462篇
  2015年   282篇
  2014年   372篇
  2013年   1511篇
  2012年   836篇
  2011年   2359篇
  2010年   2194篇
  2009年   1946篇
  2008年   1848篇
  2007年   2249篇
  2006年   440篇
  2005年   677篇
  2004年   759篇
  2003年   832篇
  2002年   581篇
  2001年   344篇
  2000年   350篇
  1999年   271篇
  1998年   298篇
  1997年   261篇
  1996年   277篇
  1995年   235篇
  1994年   244篇
  1993年   225篇
  1992年   281篇
  1991年   259篇
  1990年   206篇
  1989年   189篇
  1988年   175篇
  1987年   209篇
  1986年   223篇
  1985年   307篇
  1984年   327篇
  1983年   296篇
  1982年   262篇
  1981年   254篇
  1980年   254篇
  1979年   267篇
  1978年   176篇
  1977年   171篇
  1976年   123篇
  1975年   154篇
  1974年   124篇
  1973年   108篇
  1971年   88篇
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
971.
972.
973.
EU expansion can be seen as a positive‐sum process benefiting all countries by creating larger markets that stimulate more productive economies through increased specialization and economies of scale, implying that the general public in all countries should favour expansion. Contrarily, expansion can be perceived as zero‐sum. Capital and production relocate from higher to lower wage regions while labour does the opposite, possibly raising unemployment and reducing wages in the higher wage regions. The general public in these countries may come to oppose EU expansion attributing any deterioration in their work situation to the gains of new citizens of the European Union. Analysis of changes in Irish attitudes towards EU expansion in 2002, 2007 and 2009 finds no evidence of a link from lowered economic conditions to increased opposition to EU expansion. The only evidence for zero‐sum thinking is that diminished economic circumstances are associated with increased opposition to immigration, but this is not associated with increased opposition to further EU expansion.  相似文献   
974.
975.
We analyze optimal merger policy in R&D-intensive industries with product innovation aiming to improve the quality of products. Our results suggest that a permissive merger policy is rarely optimal in high-tech industries when the antitrust authority considers a welfare standard that balances the impact of mergers on consumers’ surplus and firms’ profits. In particular, relative to a benchmark where the effects from R&D are absent, we show that the optimal merger policy should not be substantially more permissive in the presence of those effects from R&D.  相似文献   
976.
This paper considers the assignment of tradable permits—representing property rights of an environmental good—to community members who are harmed by pollution generated by firms. These community members can in turn sell permits to polluters according to their personal preferences. For a special case with a sole household, market transactions between the household and polluters achieve an efficient pollution level. However, for a group of households, the decentralized market solution fails to yield social efficiency because of competitive consumption of the environmental goods. We design a revenue-sharing mechanism akin to unitization, under which market transactions also achieve efficient resource allocation. Importantly, in some cases, efficiency can be achieved even when regulators are ignorant of the private valuation of the environmental good.  相似文献   
977.
Journal of the Academy of Marketing Science - The experience of romantic love is closely interlocked with consumption journeys—yet how and why consumers engage in romantic consumption is not...  相似文献   
978.
979.
Smart devices such as smartphones and tablets are used extensively in public spaces for the transmission and reception of content in the form of text, photos and streaming videos. Since the bandwidth provided for wireless access is limited in public areas, it becomes an issue for users to gain access to the bandwidth they need at the right times. While an omniscient controller could assign bandwidth to each device on the basis of their needs and overall availability, imperfect information about the instantaneous state of the wifi access patterns and needs of users make for a very inefficient allocation of such bandwidth. This paper provides a solution for bandwidth allocation by creating a market among users of smart devices so that they can bid for extra bandwidth when they need it and sell it when they don’t. They do so by using a virtual currency that is conserved so that each device owner maximizes his own utility. This utility function is composed of both the benefit accrued from accessing bandwidth and the loss of the currency incurred in bidding for such bandwidth. Extensive simulations show that this market-based method outperforms an omniscient model when demand is uncertain, while minimizing bandwidth consumption.  相似文献   
980.
The article considers the conditions of developing the aviation industry for long-term prospects taking into account factors such as changes in purchasing aviation equipment, progress in developing the Russian aviation market, and works for reconstructing and modernizing transport infrastructure in the Russian Arctic. The author aims to coordinate the Government programs for developing new aviation equipment and equipment for air transport via the program of Arctic Exploration and Development, as it is necessary to integrate various cycle flows with regard to high-tech capital.  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