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   639篇
  免费   12篇
财政金融   113篇
工业经济   28篇
计划管理   98篇
经济学   130篇
运输经济   1篇
旅游经济   1篇
贸易经济   204篇
农业经济   19篇
经济概况   46篇
邮电经济   11篇
  2023年   2篇
  2021年   4篇
  2020年   8篇
  2019年   8篇
  2018年   16篇
  2017年   12篇
  2016年   18篇
  2015年   17篇
  2014年   17篇
  2013年   40篇
  2012年   39篇
  2011年   36篇
  2010年   30篇
  2009年   42篇
  2008年   23篇
  2007年   28篇
  2006年   22篇
  2005年   21篇
  2004年   14篇
  2003年   14篇
  2002年   14篇
  2001年   18篇
  2000年   4篇
  1999年   13篇
  1998年   11篇
  1997年   11篇
  1996年   10篇
  1995年   9篇
  1994年   6篇
  1993年   6篇
  1992年   8篇
  1991年   11篇
  1990年   7篇
  1989年   6篇
  1988年   11篇
  1987年   10篇
  1986年   7篇
  1985年   13篇
  1984年   9篇
  1983年   7篇
  1982年   12篇
  1981年   8篇
  1980年   3篇
  1979年   3篇
  1978年   3篇
  1977年   2篇
  1976年   4篇
  1974年   2篇
  1971年   2篇
  1967年   2篇
排序方式: 共有651条查询结果,搜索用时 15 毫秒
101.
102.
103.
The European Community is under pressure to reform the CAP, mainly due to internal financial reasons. Proposals have been put forward by the EC Commission that reform the CAP with respect to milk, oils and fats, and corngluten and citrus pellets. The authors look at the impact of these proposals on developing countries. They conclude that the effect will be to increase non-tariff barriers to trade and increase the cost of food production both in and outside the EC.  相似文献   
104.
105.
106.
Biofortification of maize with provitamin A carotenoids is a new approach to the alleviation of vitamin A deficiencies in Africa. Unfortunately these varieties are yellow or orange, while consumers generally prefer white. Consumer willingness to pay for yellow and fortified maize was compared in experimental auctions in three regions in Kenya. The premium that consumers are willing pay for fortified maize (24%) was higher than the discount they require to buy yellow maize (11%), and in one zone consumers prefer yellow. Yellow color is, therefore, not an impossible obstacle for biofortified maize, although it would clearly be easier to introduce this maize first in regions where yellow maize is currently grown.  相似文献   
107.
108.
Research Summary: A learning‐by‐hiring approach is used to scrutinize scientists' mobility in relation to the recruiting firms' subsequent innovation output. Our starting point is that among firm hires, individuals with university research experience—hired from universities or firms—can be particularly valuable. However, conflicting institutional logics between academia and industry makes working with academic scientists challenging at times for firms. We suggest two solutions to this difficulty: hiring “ambidextrous” individuals with a mix of experience of university research and working for a technologically advanced firm, and a strong organizational research culture in the recruiting firm reflected by the presence of a scientist on the top management team. We track the mobility of R&D workers empirically using patent and linked employer‐employee data. Managerial Summary: An important way to make organizations more innovative is hiring individual researchers with the right types of skills and experience. We show that individuals with university research experience beyond their final degree are particularly likely to help boost firm‐level innovation output after hiring compared to R&D workers with other types of skills and experience. However, to obtain good returns to innovation from hiring such individuals, firms need a university research–friendly organizational culture when hiring individuals with university research experience, from either firms or academia.  相似文献   
109.
A questionnaire survey has found that most fund managers rely on the strategies of buy-&-hold, momentum and contrarian trading. These strategies are typically applied mutually. Their use is rooted in the attributes and beliefs of the respective fund managers: buy-&-hold traders are fundamentally oriented, risk averse and are less (over)confident than others. Momentum traders appear as the least risk-averse professionals, going aggressively with the trend. Contrarian traders, however, show signs of overconfidence and peculiar risk aversion, both indicating difficulties in successful strategy implementation. The behavioural patterns revealed are not easily reconciled with efficient markets.  相似文献   
110.
Research underscores the important role a firm's absorptive capacity plays in developing knowledge, promoting open innovation, managing alliances, facilitating organisational learning, creating strategic variety, and enhancing financial performance. However, prior research often overlooks how absorptive capacity could increase a firm's costs associated with building this capacity, perpetuate and even increase inertia because of reduced variety and limited organisational search, handicap internal knowledge development, and complicate knowledge sharing. Research also ignores the growing complexity of absorptive capacity, a factor that could reduce a firm's gains from exploiting external knowledge. Our discussion builds on the knowledge-based view to provide an integrative framework for the performance effects of absorptive capacity. Based on different benefits and downsides of absorptive capacity at multiple levels of analysis, it points to an inverted U-shaped relationship between absorptive capacity and a firm's financial performance, highlighting several promising avenues for future research.  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