全文获取类型
收费全文 | 239篇 |
免费 | 6篇 |
专业分类
财政金融 | 10篇 |
工业经济 | 22篇 |
计划管理 | 53篇 |
经济学 | 58篇 |
综合类 | 35篇 |
贸易经济 | 35篇 |
农业经济 | 9篇 |
经济概况 | 23篇 |
出版年
2025年 | 2篇 |
2024年 | 3篇 |
2023年 | 7篇 |
2021年 | 5篇 |
2020年 | 3篇 |
2019年 | 11篇 |
2018年 | 7篇 |
2017年 | 7篇 |
2016年 | 7篇 |
2015年 | 12篇 |
2014年 | 14篇 |
2013年 | 14篇 |
2012年 | 21篇 |
2011年 | 19篇 |
2010年 | 19篇 |
2009年 | 13篇 |
2008年 | 13篇 |
2007年 | 13篇 |
2006年 | 7篇 |
2005年 | 10篇 |
2004年 | 5篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 4篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 4篇 |
1995年 | 1篇 |
1992年 | 2篇 |
1991年 | 1篇 |
排序方式: 共有245条查询结果,搜索用时 15 毫秒
1.
2.
直接转矩控制技术已经广泛应用于感应发电机的调速控制领域,并已取得良好的控制效果,而双馈风力发电机的直接转矩控制主要工作在低频区域,并且它的低频特性是一个研究热点。本文对变速恒频双馈风力发电机直接转矩控制进行了理论分析,阐述了它的工作原理结构,推导出具体的控制方程,并对它进行仿真,结果证明双馈感应风力发电机直接转矩控制在风力发电系统中具有利用率高,并网冲击小,并网速度快的优点。 相似文献
3.
教师队伍建设是高校发展的永恒主题。高等医学院校新任教师入职培训是使刚从医学院校毕业的医学生顺利向教师转变的重要环节。然而,当前医学院校新任教师入职培训还普遍存在很多问题,这需要我们从提高对入职培训的认识、改革入职培训模式、加强对入职培训的支持等方面进行思考和探索。 相似文献
4.
This paper suggests a new approach to modeling credible reputation in the finite time horizon context, using continuous time and interactions which arrive via a Poisson process. Behavior in the present model does not depend on small ad hoc irrationalities as the end of the horizon nears, and the model preserves the intuitive result that as the end of the horizon nears, the level of reputation declines towards zero. While the current paper considers the predatory pricing case, the approach should also apply whenever reputation and/or cooperation are important. 相似文献
5.
6.
Esther HaukSjaak Hurkens 《Journal of Economic Theory》2002,106(1):66-90
We analyze which normal form solution concepts capture the notion of forward induction, as defined by E. van Damme (1989, J. Econ. Theory48, 476-496) in the class of generic two player normal form games preceded by an outside option. We find that none of the known strategic stability concepts (including Mertens stable sets and hyperstable sets) capture this form of forward induction. On the other hand, we show that the evolutionary concept of EES set (J. Swinkels, 1992, J. Econ. Theory57, 306-332) is always consistent with forward induction. Journal of Economic Literature Classification Number: C72. 相似文献
7.
We argue that multinationals from different home countries have different technologies and input sourcing behavior. These differences impinge on potential productivity spillovers through backward linkages of multinationals and such effects also differ across host local firms depending on their absorptive capacity. Using a panel of Cameroonian manufacturing firms over the period 1993 to 2005, we find supportive evidence of these arguments. There is a negative relationship between the presence of American and European affiliates in downstream sectors and the productivity of Cameroonian firms in the supplying industries and a positive correlation in the case of Asian affiliates. The absorptive capacity of Cameroonian firms mainly explains these divergent results. 相似文献
8.
Tom Murphy John Hicks Mark Morrison Parikshit Basu Danielle Ranshaw 《Economic Papers: A journal of applied economics and policy》2019,38(2):131-143
The nature of the relationship between industry specialisation and employment growth is uncertain. We use regression analysis to examine the effect of changes in forward and backward industry linkages, and of changes in the spread of each of these linkages, on regional competitive employment effects. The study utilises census data from 2006 and 2011 of 46 Australian non‐urban regions and the results suggest that regional industry specialisation in firms that export from the region, or in firms that supply to local firms exporting from the region, will have a positive impact on the region's employment. This finding is supportive of smart specialisation policies which are in keeping with a market approach to regional development. 相似文献
9.
10.
三相异步电动机耗电量占全国总用电量的60%以上。我国早在1990年就发布了GB12497—1990《三相异步电动机经济运行》国家强制性标准,又分别在1995年和2006年进行了两次修订。1995版标准与2006版标准在三相异步电动机经济运行判别模型和电动机在偏离额定电压工作时对综合效率补偿方法有较大的不同。文章就上述两个问题进行了比较分析,并进行了实际测量。 相似文献