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   204篇
  免费   6篇
  2024年   1篇
  2023年   3篇
  2022年   2篇
  2021年   2篇
  2020年   9篇
  2019年   6篇
  2018年   10篇
  2017年   5篇
  2016年   11篇
  2015年   8篇
  2014年   9篇
  2013年   31篇
  2012年   10篇
  2011年   12篇
  2010年   21篇
  2009年   17篇
  2008年   10篇
  2007年   3篇
  2006年   2篇
  2005年   8篇
  2004年   3篇
  2003年   4篇
  2002年   1篇
  2001年   2篇
  2000年   2篇
  1999年   1篇
  1998年   1篇
  1997年   2篇
  1996年   1篇
  1995年   1篇
  1994年   2篇
  1993年   1篇
  1987年   1篇
  1985年   1篇
  1984年   2篇
  1982年   2篇
  1976年   1篇
  1975年   1篇
  1970年   1篇
排序方式: 共有210条查询结果,搜索用时 15 毫秒
51.
选择华商与韩商大会作为个案,运用比较研究的方法,对华商网络与韩商网络的运营机制及其特征进行了阐述和分析。韩商大会与华商大会是两个最具规模的离线网络协力系统,在强化网络成员之间的联系与沟通乃至在构筑民族共同体方面具有十分重要的意义。两个大会在会议周期、运营体系和世界性影响力方面又具有很大差异。  相似文献   
52.
Dan Cohen  Emily Rosenman 《对极》2020,52(5):1259-1285
In the face of planetary crises, from inequality to biodiversity loss, “impact investing” has emerged as a vision for a new, “moral” financial system where investor dollars fund socio-environmental repair while simultaneously generating financial returns. In support of this system elite actors have formed a consensus that financial investments can have beneficial, more-than-financial outcomes aimed at solving social and environmental crises. Yet critical geographers have largely studied “green” and “social” finance separately. We propose, instead, a holistic geography of impact investing that highlights the common methods used in attempts to offset destructive investments with purportedly reparative ones. This involves interrogating how elite-led ideas of social and environmental progress are reflected in investments, as well as deconstructing the “objects” of impact investments. As examples, we use insights from both “green” and “social” literatures to analyse the social values embedded in projects of financialisation in schooling and affordable housing in the US.  相似文献   
53.
出土、出水饱水木质文物冷冻干燥研究进展   总被引:1,自引:0,他引:1  
冷冻干燥是稳定出土、出水饱水木质文物的主要方法之一。该方法基于水由固态直接成为气态的升华过程不产生表面张力的原理,可避免饱水木材脱水时受到干燥应力的破坏。数十年来,经过实验实践和不断完善,冷冻干燥在出土、出水降解木材的稳定中取得了很好的效果,在大型、厚重木质文物的保护方面得到成功应用。本研究基于在出土、出水含盐饱水木质文物保护方面的多年实践,对国内外在脱盐、抗菌、热浸、预冻和升华干燥工艺等方面的进展进行了回顾,并提出了解决一些现有问题的技术设想。  相似文献   
54.
China's South–North Water Transfer Project (SNWTP) is a vast and still expanding network of infrastructure and institutions that moves water from the Yangtze River and its tributaries to cities in North China. This article aims to assess the SNWTP's impacts by beginning to answer seven questions about the project: How is the management of the SNWTP evolving? What are the problems to be resolved when managing SNWTP water within jurisdictions? What are the status and management of water quality in the SNWTP? What are the consequences of resettlements caused by the SNWTP? How is increased water supply affecting regional development? Is the SNWTP achieving its stated environmental goals? What are the sustainability credentials of the SNWTP? Drawing on primary and secondary data, the article demonstrates both that the opportunities and burdens characterising the project are highly uneven and that management systems are evolving rapidly in an attempt to enforce strict water quality targets. Furthermore, while the SNWTP may be helping to resolve groundwater overexploitation in Beijing, it is highly energy intensive, raising questions about its sustainability. Our analysis highlights the need to continue to interrogate the socio‐economic, environmental, and political implications of such schemes long after they are officially completed.  相似文献   
55.
THE EXCAVATION of a practically complete medieval tile factory, in operation between c. 1275/85 and 1325/35, is described. The establishment comprised three buildings, interpreted as workmen's accommodation (A), a workshop (B), and a drying shed (C), together with two kilns, within a ditched roadside enclosure. The kilns were of the normal type, with two parallel flues; one had a walled stokepit reached by a tile staircase. The methods of tile manufacture and firing are discussed, the conclusions being partially supported by experimental evidence. The patterns of the decorated tiles are seen as derivatives of the Chertsey-Westminster School, mostly via the 13th-century ‘Central Essex Group’; a relationship with Penn is also suggested. Distribution of Danbury products is largely confined to the Chelmer valley, but a waterborne distribution is suggested by a group of floor tiles from Virginia Water, Surrey.  相似文献   
56.
Vansina, Jan. Paths in the Rainforests: Toward a History of Political Tradition in Equatorial Africa. Madison: University of Wisconsin Press, 1990. xx + 428 pp. including appendix, notes/references, and index. $45.00 cloth, $17.50 paper.

Dillon, Richard D. Ranking and Resistance: A Precolonial Cameroonian Polity in Regional Perspective. Stanford: Stanford University Press, 1990. xiii + 310 pp. including appendix, references, and index. $39.50 cloth.

Ferguson, James. The Anti‐politics Machine: “Development,” Depoliticization and Bureaucratic Power in Lesotho. Cambridge: Cambridge University Press, 1990. xvi + 320 pp. including notes, references, and index. $49.50 cloth.  相似文献   
57.
From starting his intellectual career as a surrealist, communist and co-founder of the Collège de Sociologie in 1937, Jules Monnerot (1911–95) ended it as a candidate for the Front National in 1989.In this article I offer an explanation for the unexpected trajectory of this thinker whose work is little known in the English-speaking world. Without overlooking the idea that the infamous College encouraged such tendencies, I argue that the notion of ‘secular religion’, as Monnerot developed it in his Sociology of Communism (1949), goes some way to explain his gradual radicalization from Cold Warrior to fascist, a path that otherwise seems unlikely for a French intellectual after World War II. In order to emphasize the unusualness of Monnerot's case, I contrast it with that of his erstwhile collaborator, Georges Bataille. I show that accusations of fascism often levelled against Bataille should be more accurately directed at Monnerot, indeed that the fascism inherent within the College of Sociology was brought out not by Bataille but by Monnerot. Monnerot's case is unsettling first because his definition of ‘secular religion’ contributed to his pro-fascist stance; and second, because it forces us tore think what is meant by ‘philosophy after Auschwitz.’ This term usually brings to mind scholars such as T.W. Adorno, Emil Fackenheimor Emmanuel Levinas. Monnerot provides a rare example of a thinker whose fascism only developed after the Holocaust, a shocking response that demands the attention of all those interested in the relationship between religion and politics.  相似文献   
58.
“华光礁一号”南宋沉船船板中硫铁化合物分析   总被引:1,自引:0,他引:1  
鉴于硫铁化合物对海洋出水木质文物的特殊危害,通过 X射线衍射(XRD)、等离子体发射光谱(ICP-AES)和 X射线光电子能谱(XPS)等分析手段,对“华光礁一号”南宋沉船船板残块中的硫铁化合物进行了分析研究。结果表明,所采集的样品中含有大量的 Fe和 S元素,并且其分布深度至少可达 4cm。两种元素的化学状态基本可分为铁的氧化物、硫铁化合物、硫酸盐和其它还原性硫四大类。其中,硫铁化合物主要以 FeS和 FeS2形式存在,并已部分氧化成硫酸盐。因此,在后续的保护处理过程需着重对其酸化过程进行控制,以有利于文物的长期保存。  相似文献   
59.
李丹 《世界历史》2012,(2):44-56,157,158
19世纪30年代,美国反奴隶制协会向联邦国会提交了大量要求废除哥伦比亚特区奴隶制的请愿书。废奴主义者所开展的包括"向国会请愿"在内的一系列活动促进了言论自由在美国的进一步发展。为了应对日益增多的请愿书,联邦国会于1836年通过了禁止议员讨论这类请愿书的"钳口律"①。"钳口律"不仅侵犯了美国宪法第一条第六款所规定的国会议员的言论自由权,更重要的是侵犯了宪法第一修正案所保护的废奴主义者的言论自由权和请愿权。国会议员在有关"钳口律"的辩论中进一步认识到言论自由权和请愿权的重要性。  相似文献   
60.
This article reinterprets Australia's motives for its 2003 intervention in the Solomon Islands. The central argument is that considerations of Australia's international reputation have not been afforded sufficient importance in explaining the Howard government's decision to intervene. A primary concern for the Howard government was to bolster Australia's reputation in the ‘War on Terror’ vis-à-vis the USA and the international community more broadly by being seen to maintain order in its regional sphere of responsibility. The article establishes the historical basis for Canberra's claims to a special responsibility for the South-West Pacific region. It then demonstrates the close connection between Australia's responsibility for order in its region and the reputational norms that evolved during the early years of the War on Terror. These claims are substantiated through an analysis of the Solomon Islands crisis from June 2000 until the Regional Assistance Mission to Solomon Islands was deployed in July 2003.  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