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   12789篇
  免费   290篇
  2024年   31篇
  2023年   118篇
  2022年   217篇
  2021年   205篇
  2020年   473篇
  2019年   377篇
  2018年   460篇
  2017年   438篇
  2016年   483篇
  2015年   298篇
  2014年   361篇
  2013年   1458篇
  2012年   845篇
  2011年   775篇
  2010年   597篇
  2009年   650篇
  2008年   702篇
  2007年   797篇
  2006年   736篇
  2005年   686篇
  2004年   522篇
  2003年   486篇
  2002年   388篇
  2001年   299篇
  2000年   321篇
  1999年   90篇
  1998年   48篇
  1997年   32篇
  1996年   33篇
  1995年   23篇
  1994年   25篇
  1993年   23篇
  1992年   18篇
  1991年   16篇
  1990年   10篇
  1989年   2篇
  1988年   5篇
  1987年   1篇
  1986年   1篇
  1984年   3篇
  1983年   8篇
  1982年   3篇
  1981年   2篇
  1980年   5篇
  1979年   3篇
  1978年   5篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
The various scholarly and scientific endeavours — comprising both arts and sciences —, which British statesmen persued in their leisure time, transcend the mere biographical aspect. In the light of the slow, yet steady professionalisation of educational and political institutions, many of them modernised or newly created in order to achieve what came to be called “National Efficiency”, the literary and scientific pastimes of men, like Gladstone, Morley, Salisbury, Balfour or Haldane, seemed soon to become somewhat obsolete. Yet, it is argued, that the often professedly amateurish activities did not merely display the traditional hobby attitude to the sciences, so characteristic of the wealthy aristocrat, but in some cases revealed a good understanding of the scientific and educational needs of society, leading up to their active advancement. The British amateurs, it would seem, were pleading for providing a balanced higher education and training, rather than going for the technical excellence of the political rival Imperial Germany, which dazzled and, at the same time, intimidated some of them.  相似文献   
12.
针对莫高窟在保护利用数据传输过程中出现的问题与发展趋势,提出了利用无线网络深度覆盖技术构建数据传输平台,解决莫高窟大型洞窟内保护利用数据无法传输的问题。为构建实用性强的传输平台,采取了如下措施。首先,针对莫高窟保护利用各项业务数据采集、传输模式、传输机制等各阶段特点,提出了基于无线网络深度覆盖技术构建数据传输试验平台的需求;其次,设计了试验平台构建方案,依据莫高窟洞窟分布与建筑形制确定了试验平台构建位置。结合莫高窟目前无线网络覆盖现状,通过选型分析确定了无线网络深度覆盖关键技术,并应用该技术构建试验平台;最后,对试验平台无线信号覆盖范围、信号强度、传输性能、安全性等进行验证,确保数据传输的完整性与连续性。此试验平台已运行一年有余,应用效果良好。  相似文献   
13.
Recent studies have warned about the close relationship between populism and nationalism. This article offers an empirical contribution to the examination of this relationship by analysing the presence of populist and nationalist elements in the official speeches of the outgoing Brazilian president Jair Bolsonaro. We make two contributions to this expanding literature. First, we show that the supposed ambiguity between populism and nationalism can be resolved by an approach that clearly separates the two concepts. Second, we find that Bolsonaro is more populist than nationalist. His populism has elements in common with other European populist leaders (attacking political parties and the political class), but he distances himself from them by presenting authoritarian traits. Nativism is completely absent (unlike in Europe), but ‘sovereignism’ (‘us’ vs. ‘other nations or institutions’) and ‘civilisationism’ (‘us’ vs. ‘minorities’) sometimes overlap with populism. We conclude that a tension exists between populism and nationalism that can endanger the ‘good’ relationship between the populist leader and their supporters. This is something that future research on populism should consider.  相似文献   
14.
The main thrust of the scholarship on nationalism has so far been concerned with its origins. But nationalism also has effects. Whether it underpins the nation-building efforts of states, is mobilised by counter-state forces or is used in everyday life, nationalism might implicate a wide range of substantive outcomes, including political regimes, public goods provision, citizenship and immigration laws, and different patterns of conflict. Yet—with a few notable exceptions—the consequences of nationalism have received significantly less scholarly attention. In response, the aim of this Exchange is to create a new dialogue between different strands of scholarship around what we know and do not know about the consequences of nationalism. We organise this Exchange around the following questions: (1) What is nationalism? (2) How can we measure nationalism? (3) What are the consequences of nationalism? (4) What are new research frontiers?  相似文献   
15.
Between 2012 and 2019, Manus Island, Papua New Guinea, hosted Australia's offshore detention centre for asylum seekers and refugees, known as the Regional Processing Centre (RPC). This paper analyses some of the social impacts of the RPC on Lorengau town, the urban centre of Manus, through the analytical lens of the Manus idiom, as basket (Tok Pisin). Materially this refers to the everyday Manus basket whilst metaphorically, it refers to an individual's or community's social, cultural, political and economic base. First, I examine asylum seekers and refugees as a social category that emerged during this period when they were referred to as papu by locals. Papu is an honorific kinship term for grandfather or elder man; for men who are symbols for family identity, social belonging, and rights to land. Second, I examine the changing materiality of Lorengau's markets as indicative of wider societal transformations and dissonance brought about by the RPC. My ethnographic data are based on long term involvement in Manus, including three recent visits to Lorengau in 2017, 2018, and 2019 where I studied the social impacts and the changing social practices of Manus people in response to the RPC.  相似文献   
16.
This collection translates some of the work of the influential Black Brazilian thinker and activist Beatriz Nascimento (1942–1995) for the first time into English, in collaboration with her only daughter, Bethânia Gomes. Historian, poet, theorist and organiser, Beatriz Nascimento was a key figure in Brazil’s Black Movement until her untimely death in 1995. She dangerously wrote at the height of Brazil’s Military Dictatorship (1964–1985), and theorised extensively on the Black condition in Brazil; the unique experience of Black women; and quilombos—Brazilian maroon societies that she imagined as spaces of both historical and contemporary fugitivity. Following Alex Ratts, this introduction outlines her contribution to radical geography, in particular Black geographies, territoriality and embodiment. It also positions Nascimento within the trans‐Atlantic Black radical tradition. We present two of Nascimento’s essays in translation here. The first, “The Concept of Quilombo and Black Cultural Resistance”, introduces a crucial strand of her scholarly work, on the history and socio‐political significance of quilombos (maroon communities). The second, “For a (New) Existential and Physical Territory”, shows Nascimento in a different mood: philosophical, reflective and iconoclastic. In addition, two of her poems—“Dream” and “Sun and Blue”—are also translated here for the first time.  相似文献   
17.
古人发型是文化界长期关注的一个重要现象。发型不仅是时代的特征与时尚的符号,也是各个族群的辨识标志。从北朝到隋唐的中古社会,"剪头胡雏"的文物图像屡屡出现,一般来说,此类胡人形象是剪发而不是束发,在当时以"高髻为尚"的社会习俗中,"剪头胡雏"发型是有着"阶级感"的存在,是有关底层胡人的直观艺术产物。也说明当时入华胡人还没有彻底"汉化",仍然保留着本族群的发型特征。该发式是胡人与汉人的区别,也是其身份归属的象征。  相似文献   
18.
Kuwait–Georgian archaeological work at Failaka Island showed the need for geological study. Analysis of sediments related to drinking water-collecting cisterns was performed on a Late Islamic settlement (NE part of the island) in 2018. Field sedimentological, grain size and XRD analysis of the sediment profiles showed that the shallow (about 1 m deep) cone-shaped wells are dug in the loose, porous, cross-stratified calcareous coarse-grained quartz sandstones. Three upper layers of quartz sandstones in the profile have high infiltration rate and provide a rare yet ideal material for water retention. The fourth dense layer below, composed of very fine sand and silt fraction, tends to hinder water movement and forms a relatively impermeable water-resistant surface. Thus, the distribution patterns of clay content, grain sizes and porosity of the well-hosting sediments are favourable for freshwater infiltration and harvesting. An additional petrographic analysis was conducted on different types of rocks discovered on the archaeological site, used as building material and fragments of stone artifacts to identify their origin. It was established that archaeological building material is of local origin, whereas the source rocks for stone artifacts were imported.  相似文献   
19.
The site of Kharaib al-Dasht, located on the northern coast of Failaka, is a late Islamic settlement with an extensive fishing infrastructure. It has been excavated since 2013 by the Kuwaiti-Polish Archaeological Mission. The ceramic assemblage collected so far exceeds 18,000 fragments. The sherds underwent technological and typological analyses, which demonstrated a wide diversity of local common kitchen wares, consistent with the needs of households specialised in fishing. A considerable percentage of imported vessels was brought to Failaka from the Arabian Gulf and Persia, though Far Eastern luxury tableware was also attested. This paper demonstrates the socioeconomic role of Kharaib al-Dasht in the context of trade exchange on the microregional (Kuwait) and macroregional (the Gulf, South and Eastern Asia) scales in the eighteenth and nineteenth centuries.  相似文献   
20.
This paper discusses the experiences of Christian Montserratian residents through the 1995-present eruptions of the Soufrière Hills Volcano, highlighting that while the earthly powers of the volcano are fundamentally nonhuman, they are known and understood in a diversity of ways by different actors – and they interfere in politics and the production of knowledge. Montserrat, as a UK Overseas Territory, is a non-sovereign territory with a strong Christian identity that has been enhanced by its geological experience. At the same time, the UK has used the eruption to hold greater legislative control over the island. A final group of stakeholders in the eruption is the volcanologists, mainly from the UK until 2010, whose terminology and knowledge-world has had significant impact on the island, but has also been significantly extended by it. The paper ultimately uses this example to suggest that while there are useful and important insights from the “ontological turn” (incorporating vitalism, materialism, speculative realism) in thinking about the “lively earth”, the enactment of volcanic risk management at the governmental level also constitutes a knowledge-practice that must be approached critically to avoid the pitfalls of modernist science and ensure meaningful political change.  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