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   1326篇
  免费   49篇
  2024年   1篇
  2023年   13篇
  2022年   18篇
  2021年   34篇
  2020年   66篇
  2019年   53篇
  2018年   54篇
  2017年   67篇
  2016年   60篇
  2015年   38篇
  2014年   39篇
  2013年   217篇
  2012年   116篇
  2011年   53篇
  2010年   41篇
  2009年   59篇
  2008年   62篇
  2007年   52篇
  2006年   47篇
  2005年   31篇
  2004年   39篇
  2003年   40篇
  2002年   22篇
  2001年   34篇
  2000年   17篇
  1999年   10篇
  1997年   6篇
  1996年   5篇
  1995年   9篇
  1994年   8篇
  1993年   2篇
  1992年   13篇
  1991年   8篇
  1990年   1篇
  1989年   5篇
  1988年   5篇
  1987年   7篇
  1986年   5篇
  1985年   5篇
  1984年   10篇
  1982年   1篇
  1981年   1篇
  1980年   1篇
排序方式: 共有1375条查询结果,搜索用时 15 毫秒
941.
This paper deals with the evaluation of two-dimensional site-effects due to the seismic interaction between hills with various configurations and underground cavities. The time-domain boundary element method is used to evaluate the site-effects of hill-cavity interaction subjected to vertically propagating in-plane SV and P waves. The presence of an underground cavity and the hill topography are expected to induce significant effects on the surface ground motion. To further examine the contribution of the amplification ratio of the hill-cavity system, a fairly simple approach, which can compute the response spectra of the hill’s surface motion above a cavity based on the real input motions, is also used to input motions.  相似文献   
942.
The article focuses on the Italian general election held on 4 March 2018, which was notable for the surprising results in southern Italy. These results will be analysed by looking at two dimensions of electoral behaviour: on one hand, participation and volatility, on the other the success of the protest parties, the Five Star Movement (M.5.S.) and the League. These features will be considered in relation to the territorial distribution of the vote. More specifically, in the 2018 election participation was exceptionally high, especially in the south which in some regions saw electors returning to the polls. But electoral volatility is still high. Both factors affected the extraordinary success of new protest parties and collapse of the traditional parties. Traditionally in the south the vote has gone to moderate and pro-government parties, but this time in all constituencies the M.5.S., an ‘eccentric’, protest or populist party-movement, which in many cases took over 40 per cent of the votes, with a peak of 50 per cent in Campania and Sicily. Further, the wave of protest votes favoured another party with no previous support in this geographical area, the League. It may be too soon to say whether these changes in the form and dynamics of the party system are long-lasting and able to achieve a lasting change in the political spectrum, but so far the outcome of election has given a further push to the radicalization of both electoral demand and supply.  相似文献   
943.
I argue that Augustine’s message in City of God, Book 19, has been consistently misinterpreted and hence a vital part of his argument in City of God has been misunderstood. The received reading of Book 19, as found in the work of Mary Clark, Rowan Williams, John Milbank, Oliver O’Donovan and Robert Dodaro, is that in Book 19 Augustine rejected the possibility of finding social and political justice among pagans. I argue that Augustine reached no such conclusion in Book 19. On the contrary, I find that the only justice that Augustine denied to pagans in Book 19 was justice as righteousness, that is, the justice of worshipping and serving the true God. He found that pagans claimed justice as righteousness for themselves and on this basis claimed that Rome had been a republic. Augustine denied that pagans could ever possess justice as righteousness, and hence denied that pagan Rome had ever been a republic.  相似文献   
944.
Originating in 19th century cultural evolutionary theory, a revised concept of ‘animism’ has in recent years found new life in anthropology in the writings of ontological relativists. Continuity is found in the reputed attribution of life by members of small‐scale non‐western societies to inanimate objects as well as to organisms. This new animism is typically contrasted with western or modern scientific thought, either exclusively or primarily. Concerning the Nage of the Indonesian island of Flores, this paper analyzes results of research into what things people regard as being alive (muzi). While the majority of Nage deem only animals, plants, and humans to be living, differences appear among informants distinguished by age and gender. As well as the overall finding, this variation and cultural usages contextually depicting certain inanimate objects as being alive raise questions about animism as a unitary way of knowing the world characteristic of single societies.  相似文献   
945.
Nearly 15 years after the Rio Conference and 10 years after the Lucerne Declaration on Geographical Education for Sustainable Development we are interested to what extent the goals of this declaration have been implemented? What role does Geography play in Education for Sustainable Development in higher education? We analyzed the modules of 107 degree programs with Geography as a degree major or as a teacher training subject at 55 German universities, technical colleges and universities of education. We conducted a quantitative text analysis in which we searched the key words “Sustainability”, “Sustainable Development”, “Education for Sustainable Development” and “Nature-Society Studies” in the Module Regulations. Our data indicate great heterogeneity between the degree programs. The key words were predominantly found in majors in “Human Geography”, “Geography” and teacher training programs for “academic high schools”. Aspects of the results considered in the paper include: (a) differences in the orientation of degree programs, (b) varying degree of implementation in the modules, (c) different conceptual understanding of the principles of sustainability, (d) the extent to which concepts of Environmental Education and Education for Sustainable Development are mixed, (e) heterogeneity between mandatory courses and electives.  相似文献   
946.
The recent success of the Marriage Equality campaign in the Republic of Ireland has highlighted the underdeveloped historiography of the Irish LGBT movement. Current historical narratives of the movement focus almost exclusively on David Norris’ legislative campaign, an initiative that was criticised by contemporary activists for isolating other voices in the community, such as those of feminist, socialists and republicans. The present study examines the influence of radical politics in the early movement for gay rights through oral history and documents from the Irish Queer Archive. In doing so, the study seeks to illuminate the historical darkness surrounding the movement’s emergence in the early 1970s and a period of demobilisation in the late 1980s, a trajectory that has been occluded in narratives that conclude with the 1993 decriminalisation of male homosexuality. The study argues that the movement was marked throughout its history by a lack of homogeneity and the persistence of internal conflicts.  相似文献   
947.
The notion of transformation is gaining traction in contemporary sustainability debates. New ways of theorising and supporting transformations are emerging and, so the argument goes, opening exciting spaces to (re)imagine and (re)structure radically different futures. Yet, questions remain about how the term is being translated from an academic concept into an assemblage of normative policies and practices, and how this process might shape social, political, and environmental change. Motivated by these questions, we identify five latent risks associated with discourse that frames transformation as apolitical and/or inevitable. We refer to these risks as the dark side of transformation. While we cannot predict the future of radical transformations towards sustainability, we suggest that scientists, policymakers, and practitioners need to consider such change in more inherently plural and political ways.  相似文献   
948.
This counter‐mapping project illustrates the areas of intervention of different operations geared toward rescue and enforcement between 2013 and 2015, including the Italian Navy's “Mare Nostrum” search and rescue mission, the EU border agency Frontex's “Triton” enforcement operation, the humanitarian interventions of commercial vessels, and the action of civil‐society rescue vessels such as those operated by Médecins Sans Frontières (MSF—Doctors Without Borders). The project offers a spatial understanding of the Mediterranean border‐scape, the practices of rescue and enforcement that occur within it, and the risk of sea‐crossing at this particular moment. Through these maps, the Central Mediterranean Sea emerges as a striking laboratory from which novel legal arrangements, surveillance technologies, and institutional assemblages converge.  相似文献   
949.
ABSTRACT

Iran under Mohammad Reza Pahlavi embarked on one of the most ambitious nuclear programmes of any state in the 1970s. This decision was in part motivated by the zeitgeist surrounding nuclear energy in the 1970s that envisioned the transition from a petroleum- to plutonium-based economy. This decision, however, was soon followed by the Indian ‘Smiling Buddha’ peaceful nuclear explosion. This led the United States and other nuclear suppliers to strengthen restraints on nuclear exports. Many nuclear recipients, particularly in the Third World, objected to US-led changes to the nuclear non-proliferation regime, including the creation of the London Club (later renamed the Nuclear Suppliers Group). To address perceived shortcomings of nuclear suppliers in cooperation on the peaceful uses of nuclear technology, the Iranian nuclear leadership organized the Iran Conference on the Transfer of Nuclear Technology in April 1977. The Persepolis conference, as it came to be known, saw many nuclear suppliers, recipients and industry rally in opposition to US non-proliferation policy under President Jimmy Carter. However, following the Iranian Revolution of 1979, Iran ceased to function as the lynchpin of this opposition to US policy, with the result that the coalition created at the Persepolis conference dissipated.  相似文献   
950.
Historians remain undecided over whether or not women actually took up arms during crusading expeditions. Opinions vary widely, from denying that women could ever be true crucesignati to concluding that they took an active role in the fighting, This study focuses on the Third Crusade, for which the chronicle evidence is particularly full. Some of the narrative accounts of the crusade never mention women or even deny that they took part, while others describe their assisting crusaders in constructing siege works or performing menial tasks. The Muslim sources for the Third Crusade, however, depict Christian women taking part in the fighting, armed as knights. The study discusses the reasons behind these divergent depictions of women in the Third Crusade. It examines the evidence for women taking an active part in military activity in Europe, and concludes that women could certainly have taken an active military role in the Third Crusade. Yet, as the European sources are silent on the subject, it is unlikely that women did play a significant military role, although it is possible that some fought in particularly desperate battles.  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