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   182篇
  免费   14篇
各国政治   23篇
工人农民   5篇
世界政治   11篇
外交国际关系   16篇
法律   73篇
政治理论   63篇
综合类   5篇
  2023年   5篇
  2021年   2篇
  2020年   2篇
  2019年   16篇
  2018年   7篇
  2017年   10篇
  2016年   7篇
  2015年   9篇
  2014年   13篇
  2013年   30篇
  2012年   6篇
  2011年   5篇
  2010年   9篇
  2009年   3篇
  2008年   6篇
  2007年   3篇
  2006年   4篇
  2005年   1篇
  2004年   4篇
  2003年   7篇
  2002年   9篇
  2001年   5篇
  2000年   4篇
  1999年   3篇
  1998年   3篇
  1996年   1篇
  1995年   4篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1990年   1篇
  1989年   1篇
  1986年   1篇
  1985年   1篇
  1984年   1篇
  1982年   1篇
  1978年   2篇
  1973年   1篇
  1972年   1篇
  1967年   1篇
  1965年   1篇
排序方式: 共有196条查询结果,搜索用时 15 毫秒
121.
Ideas of ‘community’ and ‘community voice’ have been mobilised in collaborative programs developed between the National Museum of Australia and the Murray‐Darling Basin Commission since 1992. This collaboration is set within a broader context of changing ideas and practice around governance, community and environmental issues. The recent Murray‐Darling Outreach Project (MDOP), a series of museum outreach projects with regional communities aiming to increase community engagement in local environmental issues in the Murray‐Darling Basin, is specifically examined. Evaluation research on the MDOP found that the approach to program development significantly shaped the types of voices, range of issues presented and the nature of the communicative forums established. The potential impacts on online audiences are discussed along with broader implications for government agencies involved in community partnerships.  相似文献   
122.
Genetically modified organisms (GMOs) are usually introduced into the environment through experimental releases or extensive cultivation. The risks involved are controlled via both the authorization for deliberate release and the authorization for the placing on the market of a GMO. In these two steps, the core issues of legal protection are public health and the environment. GMO-free agriculture has been introduced as a third – economic – protected good. This has triggered coexistence measures keeping GM and non-GM agriculture separated. Given the fact that much has already been said about risks of GMOs to human health, this article will rather focus on the environmental dimension, and more precisely on aspects of nature protection. It will accordingly explore whether nature is adequately protected through the authorization for the release and the authorization for the market placement of GMOs. While these questions concern regimes aiming at preventing environmental damage, co-existence, if related to natural ecosystems (rather than to the protection of a variety of agriculture), raises the question of whether ecosystems can be considered as protectable goods even if no traditional damage is caused.  相似文献   
123.
A combination of calculated, normative, and social motivations as well as awareness of rules and capacity to comply are thought to foster compliance with regulations. Hypotheses about these factors were tested with data concerning Danish farmers' compliance with agro‐environmental regulations. Three key findings emerge: that farmers' awareness of rules plays a critical role; that normative and social motivations are as influential as calculated motivations in enhancing compliance; and that inspectors' enforcement style affects compliance differently from that posited in much of the literature. It was also found that formalism in inspection can be helpful to a point, while coercion by inspectors can backfire. Taken together, these findings counter arguments concerning the harm of legalism and the benefits of flexible enforcement. This study contributes to the understanding of factors that shape compliance with social and environmental regulations. © 2001 by the Association for Public Policy Analysis and Management.  相似文献   
124.
This article presents the regional emission targets corresponding to different climate regimes for differentiating commitments beyond 2012 on the basis of the Multi-Stage approach. This approach assumes a gradual increase in the number of Parties involved and their level of commitment according to participation and differentiation rules. The analysis focuses on two global greenhouse gas emission profiles resulting in CO2-equivalent concentrations stabilising at 550 and 650 ppmv in 2100 and 2150, respectively. Three Multi-Stage cases have been developed in order to assess different types of thresholds. These share three consecutive stages representing different commitments: stage 1 – no quantitative commitments; stage 2 – emission–limitation targets and stage 3 – emission reduction targets. The analysis shows that by 2025 all three cases result in emission reduction objectives for all Annex I regions of at least 30–55% below their 1990 levels for 550 ppmv, whereas for 650 ppmv target they range from 0 to 20%. Furthermore, early participation is required of the major non-Annex I regions through emission limitation targets i.e. before 2025 and 2050 for the 550 and 650 ppmv targets, respectively. The first participation threshold for adopting emission–limitation targets on the basis of a capability–responsibility index (as introduced here) can provide for a balanced and timely participation of non-Annex I regions. Major strengths and weaknesses of the climate regimes are discussed and important obstacles and pre-conditions for their feasibility and acceptability are highlighted.  相似文献   
125.
126.
127.
A comprehensive epidemiological study of the involvement of cannabis and ethanol in motor vehicle fatalities in the Province of Ontario, Canada, is described. The study is based on toxicological analyses of blood and, when available, urine specimens. Ethanol was determined by headspace gas chromatography (GC). For cannabis, the methods employed were radioimmunoassays (RIAs) for screening and gas chromatography/mass spectrometry (GC/MS) for the determination of delta-9-tetrahydrocannabinol (THC) in blood. The study sample consisted of 1169 drivers and 225 pedestrians. THC was detected in the blood of 127 driver victims (10.9%) in concentrations ranging from 0.2 to 37 ng/mL, with a mean of 3.1 +/- 5.0 ng/mL. Ethanol was found in 667 driver victims (57.1%), in concentrations ranging from 9 to 441 mg/100 mL, with a mean of 165.8 +/- 79.5 mg/100 mL. For pedestrians, the incidence of THC and ethanol in the blood was 7.6 and 53.3%, respectively. The incidence of THC in the driver victims in this study constitutes an approximately threefold increase over the results of an Ontario study completed in 1979. At least a part of the increase may be attributed to interstudy differences in analytical methodology for cannabinoids.  相似文献   
128.
129.
130.
ABSTRACT

The United States was at least partly culpable for the failure of denuclearisation agreements with North Korea concluded during the presidencies of Bill Clinton and George W. Bush in the 1990s and early 2000s. American failure to implement commitments in a timely manner arose from a combination of domestic and presidential politics, the constraints imposed by international partnerships, and bureaucratic structures and procedures. For its part, North Korea implemented its commitments faithfully until its leadership’s increasing disenchantment with American tardiness and perceived lack of good faith.  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