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   170篇
  免费   4篇
  2023年   1篇
  2021年   3篇
  2020年   5篇
  2019年   4篇
  2018年   6篇
  2017年   8篇
  2016年   13篇
  2015年   4篇
  2014年   6篇
  2013年   29篇
  2012年   4篇
  2011年   9篇
  2010年   5篇
  2009年   3篇
  2008年   10篇
  2007年   8篇
  2006年   4篇
  2005年   2篇
  2004年   4篇
  2003年   3篇
  2002年   9篇
  2001年   2篇
  2000年   4篇
  1999年   1篇
  1998年   2篇
  1997年   3篇
  1996年   2篇
  1994年   2篇
  1993年   2篇
  1988年   1篇
  1987年   1篇
  1985年   3篇
  1984年   2篇
  1983年   2篇
  1982年   2篇
  1979年   1篇
  1978年   1篇
  1974年   1篇
  1972年   2篇
排序方式: 共有174条查询结果,搜索用时 15 毫秒
81.
Consilience of genetics and archaeobotany in the entangled history of rice   总被引:3,自引:0,他引:3  
Major leaps forward in understanding rice both in genetics and archaeology have taken place in the past decade or so—with the publication of full draft genomes for indica and japonica rice, on the one hand, and with the spread of systematic flotation and increased recovery of archaeological spikelet bases and other rice remains on early sites in China, India and Southeast Asia. This paper will sketch a framework that coherently integrates the evidence from these burgeoning fields. This framework implies a reticulate framework in the phylogeny of early cultivated rice, with multiple starts of cultivation (two is perhaps not enough) but with the key consolidations of adaptations that must have been spread through hybridisation and therefore long-distance cultural contacts. Archaeobotanical evidence allows us to document the gradual evolutionary process of domestication through rice spikelet bases and grain size change. Separate trends in grain size change can be identified in India and China. The earliest centre of rice domestication was in the Yangtze basin of China, but a largely separate trajectory into rice cultivation can be traced in the Ganges plains of India. Intriguingly, contact-induced hybridisation is indicated for the early development of indica in northern India, ca. 2000 BC. An updated synthesis of the interwoven patterns of the spread of various rice varieties throughout Asia and to Madagascar can be suggested in which rice reached most of its historical range of important cultivation by the Iron Age.  相似文献   
82.
83.
This article offers a comparative analysis of the origins and development of autonomism in interwar Alsace and the Moselle. Upon the liberation of the provinces in November 1918, the local populations of Alsace and the Moselle enthusiastically welcomed French troops. For President Raymond Poincare´ this enthusiasm constituted a clear ‘plebiscite’. But, in light of perceived heavy-handedness on the part of the new French rulers, this enthusiasm proved short-lived and rapidly gave way to a widespread malaise. In response to local fears for the preservation of their distinctive social, linguistic and religious traditions, Autonomist organisations emerged to oppose the loss of what they perceived to be the soul and character of Alsace and the Moselle. They rapidly became a pervasive force in local politics, cutting across ideological and class barriers and dividing parties. For the French government, autonomism represented a serious threat to national unity. For local autonomists, however, it represented an attempt to preserve local socio-economic structures and linguistic and cultural practices. The discussion here seeks to reposition autonomism within the context of local politics and to compare the distinct experiences of Alsace and the Moselle in the decade after their return to French rule.  相似文献   
84.
85.
The waterways of London are an essential component of the city, with the River Thames playing a prominent role in the heritage, history and identity of place. The upcoming 2012 Olympics are highlighting the Lea Valley waterways in east London as another important part of London’s waterscape, expanding London’s global presence as a ‘water city’. As part of the Creative Campus Initiative, we undertook a project based on the broad themes of water, London and the Olympics that would give voice to the changes taking place. The result is London’s Olympic Waterscape, a 20-minute film comprising both ‘expert’ interview material discussing broad themes and developments and an embodied record of our engagement with the Olympic area during a brief period in the construction process. The present article is about the journey we took through and around the east London ‘Olympic’ waterways as we attempted to capture this transitional moment on video.  相似文献   
86.
The passing of the Aliens Act of 1905 was a defining moment in British immigration law and history. This article investigates the influence of settler-colonial immigration restriction laws on the passing of the Act, and questions the current historiographical inclination to focus solely on the influence of American immigration restriction laws. By analysing the trajectory of contemporary public debates, the evidence given to the Royal Commission on Alien Immigration (1902–03) and the political discussion on various bills, the article shows that the existence of colonial immigration restriction laws played an important role in the formulation and passing of the 1905 Aliens Act. Putting the Act in this larger context highlights its colonial derivation, but also its uniqueness: the British Act's defence of asylum, the exception extended to those landing as political and religious refugees, has no parallel in either early US law or any of the settler-colonial laws.  相似文献   
87.
88.
Alison Mountz 《对极》2003,35(3):622-644
This essay outlines a conceptual approach to everyday geographies of the nation-state. The case study analyzed is the cross-institutional response to human smuggling in Canada. The essay draws on qualitative research with government and nongovernment actors who responded to the arrival of four boats carrying migrants smuggled from Fujian, China to British Columbia in 1999. Findings regarding the everyday institutional contexts of work in the field of immigration prompt deconstruction of the conceptual boundaries that surround governance in more abstract epistemologies of the state. This poststructural approach to geographies of the nation-state pays particular attention to the role of identity and language in the categorization of im/migrants and provokes contemplation of the transnational imaginary of the nation-state from the standpoint of policing international borders.  相似文献   
89.
90.
In recent publications and as an ongoing project I have been pursuing the idea that public health and infectious disease control have been part of the legal and technical constitution of 'undesirable' and prohibited entrants: an under-recognised means by which individuals and certain populations have been specifically classified and excluded from the territory and body politic of Australia. This article surveys and summarises these ideas and points to some of the recent redirections. These include a growing interest in the legacy of twentieth-century medico-legal border control on current (highly discriminating) regulations governing entry; a concern to make admissions under immigration and health law and regulation conceptually central; and the more familiar focus on race-based exclusions. Overall, my aim is to integrate the history of health and infectious disease control into the already extensive study of immigration and citizenship. Part of the effect of joint infectious disease and immigration regulation over the twentieth century has been the imagining, as well as the technical implementation of the island-nation as ostensibly secure, racially and territorially.  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