全文获取类型
收费全文 | 744篇 |
免费 | 21篇 |
专业分类
各国政治 | 39篇 |
工人农民 | 49篇 |
世界政治 | 116篇 |
外交国际关系 | 47篇 |
法律 | 345篇 |
中国政治 | 3篇 |
政治理论 | 162篇 |
综合类 | 4篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 8篇 |
2020年 | 13篇 |
2019年 | 28篇 |
2018年 | 31篇 |
2017年 | 40篇 |
2016年 | 35篇 |
2015年 | 22篇 |
2014年 | 18篇 |
2013年 | 131篇 |
2012年 | 22篇 |
2011年 | 26篇 |
2010年 | 16篇 |
2009年 | 16篇 |
2008年 | 23篇 |
2007年 | 25篇 |
2006年 | 31篇 |
2005年 | 26篇 |
2004年 | 15篇 |
2003年 | 21篇 |
2002年 | 22篇 |
2001年 | 15篇 |
2000年 | 13篇 |
1999年 | 9篇 |
1998年 | 16篇 |
1997年 | 13篇 |
1996年 | 6篇 |
1995年 | 8篇 |
1994年 | 7篇 |
1993年 | 10篇 |
1992年 | 11篇 |
1991年 | 4篇 |
1990年 | 4篇 |
1989年 | 6篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1982年 | 12篇 |
1981年 | 5篇 |
1980年 | 4篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1967年 | 2篇 |
1964年 | 1篇 |
排序方式: 共有765条查询结果,搜索用时 8 毫秒
761.
762.
While there has been much emphasis over the last decade on the science of nanotechnology and on the implications and risks
of potential applications, it is now timely to increase attention to the emerging dynamics of nanotechnology commercialization.
This paper examines, from a global perspective, where and how corporations are entering into nanotechnology innovation. The
paper tests the proposition that a significant shift has occurred in recent years in the orientation of corporate nanotechnology
activities—from research discovery to patented applications. It also examines the extent to which the character and structure
of corporate nanotechnology activity by country initially reflects national innovation system characteristics and prior public
research funding inputs in the stage when discovery is most emphasized. The results indicate that national innovation systems
characteristics are significant factors in the commercialization shift of nanotechnology and highlight the importance of innovation
system policy factors. We also observe the influence of cross-border international invention linkages, suggesting that national
innovation policies also need to be open and international in orientation. 相似文献
763.
764.
765.
The study of organizational task for understanding how organizations behave and evolve has been one of the classic topics in organization theory and public administration. Reputation scholarship has appeared as a promising perspective to understand internal and external organizational dynamics. Reputation scholars, too, emphasize the critical importance of task. Despite this recognition, the literature is characterized by a lack of theorization, and large-scale comparative analyses on how task characteristics are related to reputational dynamics. This study aims to address these concerns, relying on an extensive longitudinal dataset on the media reputation of 40 agencies in two countries to explain organizations' likelihood of attracting reputational threats (both in general and targeting specific reputational dimensions) through different task characteristics. Our main finding is that as agencies perform tasks of a more coercive and authoritative nature (regulatory tasks and, to a lesser extent, redistributive tasks), they are more likely to attract reputational threats (both in general and to all dimensions). 相似文献