全文获取类型
收费全文 | 1365篇 |
免费 | 48篇 |
出版年
2023年 | 9篇 |
2021年 | 12篇 |
2020年 | 43篇 |
2019年 | 73篇 |
2018年 | 66篇 |
2017年 | 85篇 |
2016年 | 73篇 |
2015年 | 35篇 |
2014年 | 44篇 |
2013年 | 338篇 |
2012年 | 43篇 |
2011年 | 45篇 |
2010年 | 42篇 |
2009年 | 41篇 |
2008年 | 30篇 |
2007年 | 37篇 |
2006年 | 32篇 |
2005年 | 28篇 |
2004年 | 27篇 |
2003年 | 25篇 |
2002年 | 14篇 |
2001年 | 21篇 |
2000年 | 11篇 |
1999年 | 17篇 |
1998年 | 7篇 |
1997年 | 8篇 |
1996年 | 9篇 |
1995年 | 7篇 |
1994年 | 10篇 |
1993年 | 6篇 |
1992年 | 5篇 |
1990年 | 9篇 |
1989年 | 7篇 |
1987年 | 7篇 |
1986年 | 8篇 |
1985年 | 10篇 |
1984年 | 8篇 |
1982年 | 5篇 |
1981年 | 9篇 |
1980年 | 6篇 |
1979年 | 10篇 |
1978年 | 12篇 |
1977年 | 4篇 |
1976年 | 6篇 |
1975年 | 9篇 |
1974年 | 4篇 |
1973年 | 5篇 |
1972年 | 6篇 |
1970年 | 5篇 |
1969年 | 4篇 |
排序方式: 共有1413条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
Modern technology lends itself to holistic exploration and widely accessible outreach. New technology allows scientists studying
our planet either from space or deep under the seas, to explore and reveal both natural and cultural resources that have previously
escaped our scrutiny. However, the use of these new technologies is expensive and often the exclusive tool of industrial research.
Yet, these new technologies can lead the way to greater collaboration, better science and more public access. In 2003 and
2004, a landmark project, combining government agencies, industrial technology and outreach set new standards in collaborative
scientific exploration. The project focused on six shipwrecks at depth in the Gulf of Mexico. The questions posed by the project
illuminate how science and industry can collaborate to produce remarkable results. The papers presented in this issue form
a model for deepwater exploration. 相似文献
105.
This paper is an attempt to understand the changing characteristics of urban poverty in Turkey since 1980. First, it analyses how the urban poor in Turkey had adopted aggressive survival strategies by strengthening their solidarity networks on religious, ethnic and cultural bases until the 2000s. Then it sheds light on how those networks have dissolved later on thanks to a set of internal and external factors and concludes that Turkey now faces deepening poverty levels and engendering new forms and dynamics of poverty. This paper is based on the Sultanbeyli district of Istanbul, a district almost entirely composed of unauthorized houses whose population grew at an unprecedented rate after 1980; and it is a perfect case for the study of issues relating to migration, urbanization and poverty in Turkish cities. 相似文献
106.
GLEN O’BRIEN 《The Journal of religious history》2008,32(3):320-344
A number of North American Wesleyan‐Holiness denominations emerged in Australia, beginning in the years following the Second World War. Some of these churches moved from being despised and marginalized sects to established denominations while others remained small and isolated, experiencing little growth. Their story demonstrates that movement along the church‐sect continuum is by no means a smooth and inevitable one. Random processes may lower or raise religious tension within the group thus affecting its movement along the continuum. The strict behavioural standards in Wesleyan‐Holiness churches have gradually been lowered and the distinctive beliefs of these groups have been eroded. Wesleyan‐Holiness churches in Australia have grown primarily through “switchers” from other denominations more than from new convert growth, so that they have become more generically “Evangelical” and less distinctively “Holiness” in their beliefs and practices. 相似文献
107.
A. SANTAGOSTINO BARBONE E. GLIOZZO F. D’ACAPITO I. MEMMI TURBANTI M. TURCHIANO G. VOLPE 《Archaeometry》2008,50(3):451-473
SEM–EDS, EMPA, ICP–MS and ICP–OES were applied to the study of three sectilia panels made of red, orange and yellow glass slabs. In order to determine the chemical state of Cu, XAS was also performed. The results indicate that, with the exception of the red samples, all slabs were made by mixing a siliceous sand with natron. The red slabs show significant compositional differences with respect to K2O and MgO contents, probably linked to the use of plant ashes as a source of alkali. The red, orange and yellow slabs are coloured by metallic copper, cuprite and Pb antimonates, respectively. The comparison between the chemical composition of the Faragola samples and several glass reference groups did not provide conclusive evidence of provenance. 相似文献
108.
Sarah B. McClure Lluis Molina Balaguer Joan Bernabeu Auban 《Journal of Anthropological Archaeology》2008
Rock art is one of the most salient features of Neolithic societies in eastern Spain and an explicit form of landscape history. This paper summarizes current debates of Mediterranean rock art chronology and interpretation and explores the contextual differences in two areas of Neolithic settlement with rock art: the Canyoles Valley (Valencia) and the Alcoi Basin (Alicante). Large-scale survey of the Canyoles Valley resulted in a clearer understanding of agricultural land use during the Neolithic that contrasts with evidence from the Alcoi Basin. By analyzing Neolithic rock art in its archaeological context, we discuss the significance and limitations of rock art analysis for understanding and characterizing landscape histories and the transition to agriculture in the region. 相似文献
109.
The South African War that broke out in October 1899 was bothvery old and very new. It was a traditional war, the last ofthe old-fashioned British imperial wars, with cavalry playinga significant part. But it was also a very modern war, for instancein the British Army's use of railways to subdue the Boers inthe early months of 1900, or the use of trench warfare by theBoers along the Modder river. It was disturbingly new in theway that it changed in the autumn of 1900 from a war betweenarmies to a guerrilla war against a civilian population, mostdistastefully so in the British concentration camps set up tohouse Boer women and children. Above all, it was a distinctlycontemporary war in its impact on the media, especially thenewspapers, and in the interaction between the media and thoseparticipating in the fighting. It was a significant war, farbigger than originally expected, and was therefore big news.The British Army, ill-prepared for the original Boer invasionof Natal, at first numbered 75,000 troops. In the end, the Britishand imperial forces totalled 450,000 with contingents from Canada,Australia, New Zealand, and India. The British lost 22,000 men,13,000 of them from disease. The Boers lost about 7,000 in thefield, while another 27,000 (many of them very young children)are estimated to have died in the concentration camps. Therewere also about 20,000 black and coloured Africanswho died in concentration camps, though this was little reportedat the time. So it was a major episode in British military history.The impact on British opinion of the relief of Ladysmith andespecially of Mafeking in 1900 was quite overwhelming. In afrenzy of jingo celebration, the verb maffickingentered the language. In these circumstances, the consequencesof the Boer War on the media and its representation of war wereinevitably massive. 相似文献
110.
Indo-Iranian Journal - 相似文献