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   545篇
  免费   39篇
财政金融   81篇
工业经济   48篇
计划管理   109篇
经济学   117篇
综合类   1篇
运输经济   9篇
旅游经济   12篇
贸易经济   126篇
农业经济   29篇
经济概况   42篇
邮电经济   10篇
  2023年   4篇
  2022年   4篇
  2021年   16篇
  2020年   14篇
  2019年   26篇
  2018年   24篇
  2017年   33篇
  2016年   25篇
  2015年   25篇
  2014年   33篇
  2013年   89篇
  2012年   20篇
  2011年   18篇
  2010年   18篇
  2009年   29篇
  2008年   14篇
  2007年   12篇
  2006年   6篇
  2005年   25篇
  2004年   6篇
  2003年   11篇
  2002年   10篇
  2001年   10篇
  2000年   7篇
  1999年   8篇
  1998年   9篇
  1997年   6篇
  1996年   9篇
  1995年   4篇
  1994年   6篇
  1993年   8篇
  1992年   3篇
  1988年   2篇
  1987年   3篇
  1985年   3篇
  1984年   6篇
  1983年   6篇
  1982年   2篇
  1981年   2篇
  1980年   2篇
  1979年   5篇
  1978年   6篇
  1977年   3篇
  1974年   2篇
  1971年   1篇
  1970年   1篇
  1969年   1篇
  1968年   1篇
  1967年   2篇
  1966年   1篇
排序方式: 共有584条查询结果,搜索用时 46 毫秒
1.
This paper is amongst the first to examine coopetition strategy for sustainable development at the network level. Companies who want to successfully implement complex innovative technologies that support sustainable development need to collaborate with other actors of the innovation ecosystem, including their competitors, so that they can develop standards, interoperable products, pool knowledge, and resources and bundle forces to compete against other technologies. Collaboration with competitors brings benefits, but also many risks. We investigated how firms cope with these risks when establishing an innovation ecosystem to implement a new technology in society. We conducted research in the Dutch smart grids sector and explored how these firms minimize inherent risks of coopetition. We found that system‐building actors in the Dutch smart grid field not only minimize inherent risks, but from the start of their collaboration they implement so‐called enablers to prevent these risks upfront.  相似文献   
2.
This paper gives a tree-based method for pricing American options in models where the stock price follows a general exponential Lévy process. A multinomial model for approximating the stock price process, which can be viewed as generalizing the binomial model of Cox, Ross, and Rubinstein (1979) for geometric Brownian motion, is developed. Under mild conditions, it is proved that the stock price process and the prices of American-type options on the stock, calculated from the multinomial model, converge to the corresponding prices under the continuous time Lévy process model. Explicit illustrations are given for the variance gamma model and the normal inverse Gaussian process when the option is an American put, but the procedure is applicable to a much wider class of derivatives including some path-dependent options. Our approach overcomes some practical difficulties that have previously been encountered when the Lévy process has infinite activity.  相似文献   
3.
Research on environmental reporting within individual sectors and industries is limited. Generic studies have typically focused on the reporting practices of the world's largest corporates. Some industries and sectors are under‐represented within these studies, limiting the potential for industry‐ or sector‐specific analysis. Forest and paper is one industry frequently under‐represented. This study examines environmental reporting amongst the top 100 forest and paper companies. The scale of environmental report publication is investigated, and the breadth and depth of reporting on the key industry issues of forest management and fibre procurement examined. The results show reporting is more prevalent amongst larger corporates but marked regional variations are evident. Most noticeably, Scandinavian companies are reporting more extensively, both in terms of the number of levels at which they report and the depth of information included on forest management and fibre procurement. Reasons for the marked regional variations in reporting are considered and markets for forest products and preferences within those markets for specific certification schemes identified as potential influencing factors. Copyright © 2003 John Wiley & Sons, Ltd and ERP Environment.  相似文献   
4.
5.
Dimensions of quality upgrading   总被引:2,自引:0,他引:2  
The impact of the Central and Eastern European (CEE) economies’ trade integration with European markets on CEE trade structures has been studied extensively. These studies frequently observe a quality upgrading of CEE exports. In this paper we consider three dimensions of quality upgrading: upgrading across industries, upgrading across different quality segments within industries and, finally, product upgrading within quality segments inside industries. For the analysis we partition industries into quality segments based on EU‐15 import unit values. The results for ten CEE countries (comprising the CEE‐5, the Baltics and South East Europe) and thirteen industries suggest fundamental differences, both across country groups and across the three different notions of quality upgrading. The CEE‐5 show no evidence of entering a ‘low‐quality trap’ in all three dimensions. By contrast, while there is a general catching‐up process across industries and inside quality segments, the second notion of low‐quality specialization may be applicable within the high‐tech industries to the performance for the Baltics and South East Europe as a group.  相似文献   
6.
7.
This paper provides an economics-based interpretation of the standard finding in the literature that democracies rarely fight each other. A general theory of conflict between two countries is presented and empirical analysis applies this theory to the question of why democracies rarely fight each other. The results show that the fundamental factor in causing bilateral cooperation is trade. Countries seek to protect wealth gained through international trade, therefore trading partners are less combative than nontrading nations. Democratic dyads trade more than nondemocratic dyads, and thus exhibit less conflict and more cooperation.  相似文献   
8.
9.
10.
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