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   1371篇
  免费   71篇
各国政治   82篇
工人农民   60篇
世界政治   112篇
外交国际关系   105篇
法律   746篇
中国政治   14篇
政治理论   312篇
综合类   11篇
  2023年   19篇
  2022年   19篇
  2021年   14篇
  2020年   36篇
  2019年   47篇
  2018年   50篇
  2017年   62篇
  2016年   67篇
  2015年   37篇
  2014年   59篇
  2013年   197篇
  2012年   61篇
  2011年   45篇
  2010年   45篇
  2009年   41篇
  2008年   49篇
  2007年   68篇
  2006年   49篇
  2005年   58篇
  2004年   37篇
  2003年   38篇
  2002年   45篇
  2001年   23篇
  2000年   20篇
  1999年   24篇
  1998年   22篇
  1997年   12篇
  1996年   9篇
  1995年   15篇
  1994年   10篇
  1993年   6篇
  1992年   21篇
  1991年   9篇
  1990年   8篇
  1989年   11篇
  1988年   11篇
  1987年   7篇
  1986年   9篇
  1985年   10篇
  1984年   6篇
  1983年   7篇
  1982年   8篇
  1981年   3篇
  1980年   8篇
  1978年   3篇
  1976年   5篇
  1975年   6篇
  1973年   3篇
  1969年   3篇
  1966年   4篇
排序方式: 共有1442条查询结果,搜索用时 15 毫秒
171.
172.
This study examines the network structure of policy learning in the C40 Cities Climate Leadership Group, which is a network of the world??s largest cities committed to tackling climate change issues. Among forty members and nineteen affiliate members, we ask the question with whom do cities learn and why? How are policy-learning relationships associated with cities?? multi-stakeholder governing body, policy performance, and cultural similarities? While studies on learning have analyzed conditions facilitating learning, quantitative studies of local government learning in global networks are rare. To facilitate the investigation into learning, we conceptualize learning as a process comprising information seeking, adoption and policy change, and focus on information seeking as the foundation step in the learning process. This social network analysis using the exponential random graph model reveals the cities that seek information and those that are information sources are different subgroups. Furthermore, analysis of nodal attributes suggests that transmunicipal learning in the C40 network is facilitated by the presence of a multi-stakeholder governing body; homophily of culture (language and regional proximity); and higher level of climate change policy performance. Creating a multi-stakeholder governing body could ensure participatory representativeness from citizens and relevant stakeholders to enhance climate change policy engagement and decision making as well as policy learning.  相似文献   
173.
This paper discusses the feasibility of EU legal action in the field of electronic identity (eID) within the new distribution of legal competences and the provision of novel legal basis engendered by the Treaty of Lisbon. The article attempts to find a ‘legal anchor’ to the idea of a pan-European electronic identity within EU law, looking at the issues of competences and legal basis. After examining various different areas of competence and the most feasible (and probable) candidates for a legal basis supporting an EU legal framework for eID, the paper argues that the latter should be found in the combination of Article 16 TFEU (concerning the right to the protection of personal data) with Article 3 TUE, and Articles 26 and 114 TFEU (concerning the establishment and functioning of the Internal Market), which also constitute the area of competence where an eID legal initiative can be pursued.  相似文献   
174.
175.
This article suggests that the consequences of the ??fragmentation?? of the European patent system are more dramatic than the mere prohibitive costs of maintaining a patent in force in many jurisdictions. The prevalence of national jurisdictions, which are highly heterogeneous in their costs and practices, over the validity and enforcement of European patents, induces a high level of uncertainty and an intense managerial complexity which reduce both the effectiveness and the attractiveness of the European patent system in its mission to stimulate innovation.  相似文献   
176.
Farming and agribusiness could help employ and reintegrate conflict-affected youth in regions recovering from civil conflict. This study addresses the constraints for youth to engage themselves in agribusiness in the worst conflict-affected regions of northern Uganda. Specifically, it explores to what extent beekeeping and honey business offer viable socio-economic opportunities to formerly displaced youth. Using a value chain approach, the study draws on in-depth interviews with 23 (young) key stakeholders in the honey value chain, document analysis and focus group discussions. The results suggest that apiculture business can create employment for conflict-affected youth in northern Uganda due to the relatively low entry barriers, a young enthused vanguard and higher returns per unit input compared to other agricultural sectors in the region. However in order to succeed, this group requires support from community elders, government and business facilitators, because, due to their age and war background, these youngsters face the common constraints to farming and agribusiness, but at higher degrees of severity.  相似文献   
177.
178.
The case law of the CJEU on the economic free movement of people has departed from the traditional requirement that a nexus must be established between individual free movement and cross‐border economic activity, which has led to an extension of its scope. It is submitted that concerns with the protection of fundamental rights of European citizens are driving this process, and that the CJEU has sought to protect these fundamental rights through the market freedoms in two ways: by arguing that market freedoms are fundamental right themselves, and/or that European Citizenship has changed their normative underpinnings and status. This Article criticises both lines of argument, and defends a third: that the protection of these fundamental rights must be achieved at European level, if at all, through a conception of European Citizenship able to stand on its own.  相似文献   
179.
This paper compares the performance of a due care standard which is tailored to individual precaution costs to that of the reasonable person standard. This is done in a framework in which injurers can reduce their precaution costs via investment in progressing care technology. We show that the reasonable person standard may invoke better investment incentives, pointing to a potential trade-off between static and dynamic efficiency.  相似文献   
180.
The analysis of amino acids present in fingerprints has been studied several times. In this paper, we report a method for the analysis of amino acids using an fluorenylmethyloxycarbonyl chloride‐derivatization for LC separation and MS detection. We have obtained good results with regard to the calibration curves and the limit of detection and LOQ for the target compounds. The extraction of the amino acids from the substrates used proved to be very efficient. Analysis of the derivatized amino acids enabled us to obtain full amino acid profiles for 20 donors. The intervariability is as expected rather large, with serine as the most abundant constituent, and when examining the total profile of the amino acids per donor, a characteristic pattern can be observed. Some amino acids were not detected in some donors, or fell out of the range of the calibration curve, where others showed a surprisingly high amount of material in the deposition analyses. Further investigations will have to address the intravariability of the amino acid profiles of the fingerprints from donors. By the development of the analytical method and the application to the analysis of fingerprints, we were able to gain insight in the variability of the constituents of fingerprints between the donors.  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