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   73篇
  免费   1篇
  国内免费   2篇
教育   19篇
科学研究   21篇
体育   19篇
综合类   11篇
信息传播   6篇
  2023年   1篇
  2022年   3篇
  2020年   2篇
  2019年   1篇
  2018年   2篇
  2017年   1篇
  2015年   2篇
  2014年   5篇
  2013年   6篇
  2012年   7篇
  2011年   4篇
  2010年   6篇
  2009年   2篇
  2008年   2篇
  2007年   6篇
  2006年   8篇
  2005年   5篇
  2003年   3篇
  2002年   2篇
  2000年   2篇
  1999年   1篇
  1997年   3篇
  1995年   1篇
  1992年   1篇
排序方式: 共有76条查询结果,搜索用时 15 毫秒
31.
分析了当前的新兴产业技术预测研究及实践中,存在的定量方法数据关联性研究不足和即时性不够,以及技术产业化可能性和前景评估环节缺失的问题,提出运用三螺旋理论解决这几个问题的思路。设计出一种基于三螺旋理论的新兴产业技术预测方法:通过解析科技论文、专利和科技舆情三种类型信息之间的关联性,及其在技术预测中的交互作用,运用三螺旋理论来构建技术预测“论文-专利-舆情”三螺旋模型,用于预测新兴产业的未来技术方向;结合新兴产业及技术特征分析,运用原始“大学-产业-政府”三螺旋理论模型进行技术产业化可能性和前景评估,对所预测的新兴产业未来技术方向进行优选。同时,对该方法的可行性进行了分析论证。  相似文献   
32.
Can the knowledge base of an economy be measured? In this study, we combine the perspective of regional economics on the interrelationships among technology, organization, and territory with the triple-helix model, and offer the mutual information in three dimensions as an indicator of the configuration. When this probabilistic entropy is negative, the configuration reduces the uncertainty that prevails at the systems level. Data about more than a million Dutch companies are used for testing the indicator. The data contain postal codes (geography), sector codes (proxy for technology), and firm sizes in terms of number of employees (proxy for organization). The configurations are mapped at three levels: national (NUTS-1), provincial (NUTS-2), and regional (NUTS-3). The levels are cross-tabled with the knowledge-intensive sectors and services. The results suggest that medium-tech sectors contribute to the knowledge base of an economy more than high-tech ones. Knowledge-intensive services have an uncoupling effect, but less so at the high-tech end of these services.  相似文献   
33.
The interaction among the three sub-dynamics of economic exchange, technological innovation, and institutional control can be captured with a generalized Triple Helix model. We propose to use the information contained in the configuration among the three sub-dynamics as an indicator of the synergy in a configuration. This measure indicates the reduction of the uncertainty which prevails at the level of an innovation system. On the basis of data at the district level in Germany, the conclusions of a previous study about the Netherlands are tested: medium-tech manufacturing is the main driver of the knowledge-based configuration in a regional economy, while knowledge-intensive services tend to uncouple the economy from the regional configuration. At the level of regions (NUTS-2) Germany's knowledge-based economy is no longer structured in terms of the previous East–West divide of the country, while this divide has prevailed at the level of the states (NUTS-1) that constitute the Federal Republic. However, the effects of high and medium-tech are not specific for the western or eastern parts of the country. The configuration of medium-tech manufacturing can be considered a better indicator of the knowledge-based economy than that of high-tech manufacturing.  相似文献   
34.
在三元函数的奇偶性定义的基础上,给出了利用三元函数的奇偶性与区域的对称性求三重积分值的简便方法。  相似文献   
35.
While it is widely acknowledged that the institution of science is currently undergoing a major transformation, there remains reluctance in many sectors to embrace the changes and maximize the utility of science and its role in economic growth. The transformation of science is driven by economic factors rather than those value-based. Accordingly, confusion and contradiction in science policy statements become apparent when the structure of science policy and the mechanisms that aim to support collaborative arrangements of science are examined. Historical and cognitive evidence shows the distinctions of “applied” and “basic” research are human constructions and, as such, have become a handicap to the emerging knowledge-based economy. It is concluded that, if the economic and social benefits of integrated arrangements in knowledge production are to be realized, there is a pressing need to modify the current institution of science and the policies that would underlie it.  相似文献   
36.
介绍了"三网融合"的发展历程及技术基础,讨论了"三网融合"对湖北广电的影响以及湖北广电应对"三网融合"发展趋势的策略。  相似文献   
37.
梳理美国政府关于无人机系统的系列通报和其他研究报告,基于三螺旋理论,从政府、大学和产业的角度剖析美国无人机发展的基本策略,分析3方面主体各自的角色和相互交叉、彼此协同的职能,构建三螺旋模型;在此基础上,总结相关经验,对我国无人机发展提出建议。  相似文献   
38.
本文通过对三级跳远各个技术环节速度-节奏的探讨,找出其正确的控制方法,以期为教练员和运动员训练提供更具准确性和可靠性的理论依据。  相似文献   
39.
唐诗用典,类型多种多样,翻译家译典,方式亦是灵活多变。许渊冲教授译作无数,他的翻译理论也是影响深远。"三化论"(深化、等化、浅化)是译诗的方法论。浅化避短,深化扬长,等化取巧,三化并用,以诗译诗,传情达意,使译文在保留原作艺术魅力的基础上,有效克服了语言和文化之间的障碍,给人以美的享受。  相似文献   
40.
对于国际学术界引起卓越反响的产学官三重螺旋创新理论,进行了知识集成和系统综述研究,给出三重螺旋创新系统理论及其相应研究的一些新近进展情况。  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