全文获取类型
收费全文 | 286篇 |
免费 | 22篇 |
专业分类
308篇 |
出版年
2023年 | 1篇 |
2021年 | 5篇 |
2020年 | 5篇 |
2019年 | 10篇 |
2018年 | 12篇 |
2017年 | 22篇 |
2016年 | 16篇 |
2015年 | 9篇 |
2014年 | 11篇 |
2013年 | 79篇 |
2012年 | 9篇 |
2011年 | 14篇 |
2010年 | 12篇 |
2009年 | 7篇 |
2008年 | 8篇 |
2007年 | 8篇 |
2006年 | 8篇 |
2005年 | 3篇 |
2004年 | 3篇 |
2003年 | 4篇 |
2002年 | 4篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1999年 | 8篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 6篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1991年 | 2篇 |
1989年 | 3篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1984年 | 5篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1975年 | 2篇 |
排序方式: 共有308条查询结果,搜索用时 0 毫秒
41.
42.
Timothy P. Nokken 《Congress & the Presidency》2013,40(2):53-70
From 1990 to 1999, the House of Representatives held roll call votes to attempt to overturn presidential extensions of Normal Trade Relation (NTR) status to China. What was once a routine matter attracting little congressional attention became a highly divisive matter. Interestingly, the coalition that formed to oppose such extensions was a partnership of strange bedfellows: extreme liberals joining their far-right colleagues to try to rescind the president's extension of normal trade status for China. When the distribution of opposition on the yearly extensions of NTR is compared to that on the vote to approve permanent NTR (PNTR) for China, the ideological distribution of opponents changes noticeably. I argue that important procedural differences between the votes on the yearly extension, and PNTR, serve to explain why ideologically extreme members formed their strange alliance. 相似文献
43.
We analyze the Supreme Court nomination process in order to provide a general explanation of presidents' propensity to win confirmation battles even in the face of an ideologically hostile Senate. The analysis serves two purposes. First, we argue that employing the conventional measure of the Senate's power to constrain the president's choice of nominees–the median senator–provides an inaccurate picture of this process. In its stead we argue that the filibuster pivot (or the sixtieth most liberal or conservative senator) more accurately captures the Senate's power over the president (Krehbiel 1998). Second, we argue that even under this more stringent spatial constraint, presidents still have the ability to win most confirmation battles with the Senate. Indeed, our results indicate that presidents often overcome situations where the Senate should reject their nominees, or where it should force them to make a less desirable choice, by invoking political capital. 相似文献
44.
The African landscape is set to change dramatically in the coming years, and will have a detrimental impact on the inherent archaeological and cultural heritage elements if not monitored adequately. This paper explores how satellite imagery, in particular open source imagery (Google Earth, multispectral satellite imagery from Landsat and Sentinel-2), can be utilized to monitor and protect sites that are already known with particular reference to Islamic archaeological sites in Ethiopia. The four sites used are in different geographic and geomorphological areas: three on the Somali Plateau (Harlaa, Harar, and Sheikh Hussein), and one on the edge of the Afar Depression (Nora), and have varied histories. The results indicate that open source satellite imagery offers a mechanism for evaluating site status and conservation over time at a large scale, and can be used on data from other areas of Africa by heritage professionals in the African continent at no cost. 相似文献
45.
46.
Timothy Livsey 《The Journal of imperial and commonwealth history》2013,41(4):773-775
ABSTRACTThis article reconstructs the history of animal protection organisations in Palestine from the British occupation to the beginning of World War II. Although Arab and Jewish mandate state subjects consistently rejected these organisations, animal protection remained an important part of the mandate government throughout the political upheavals of the interwar period. Despite their seemingly apolitical nature, animal welfare associations enjoyed unique legal privileges and drew support from the most prominent British personnel in Palestine. Managing cruelty and compassion towards animals, I argue, was a means of making Palestine part of the British Empire. Animal protection functioned both as a tool for direct financial control over agriculture, and as an educational project that promoted an emotional ‘civilizing mission.’ In the spirit of inter-war British imperial humanitarian networks, animal welfare created civilizational hierarchies through compassion, and revised the role of the human-animal divide in imperial culture. 相似文献
47.
48.
Timothy Champion 《Nations & Nationalism》2001,7(4):451-465
The Phoenicians played ambivalent roles in Western historical imagination. One such role was as a valued predecessor and prototype for the industrial and maritime enterprise of nineteenth‐century imperial Britain. Explicit parallels were drawn in historical representations and more popular culture. It was widely believed that the Phoenicians had been present in Britain, especially in Cornwall, despite a lack of convincing historical evidence, and much importance was placed on supposed archaeological evidence. Ideological tensions arose from the need to reconcile ancient and modern Britain, and from the Semitic origin of the Phoenicians. This example shows the power of archaeological objects to provide material support for national and imperial constructions of the past. 相似文献
49.
Timothy D. Everhart 《Midcontinental journal of archaeology, MCJA》2020,45(2):130-159
ABSTRACT This article presents a reconstruction and analysis of the Caldwell Mound located in the central Scioto River valley of southern Ohio. The mound contained a log tomb, at least four burials, and associated funerary objects. Four AMS radiocarbon dates place the Caldwell Mound within the last century BC and first century AD, and the mound contains evidence of practices historically associated with “Adena” and “Hopewell.” Few other records exist from this period in the region despite it experiencing perhaps some of the most dramatic socioreligious transformations in precolumbian North America. This analysis documents early evidence for the diversification and segregation of leadership roles based on the interpretation of three buried individuals. It also demonstrates the utility and efficacy of working with amateur-produced records and collections, even when incomplete, to reconstruct and glean insight from important Woodland period sites. 相似文献
50.
Timothy Neale 《Social & Cultural Geography》2018,19(4):473-495
Humans are ‘fire creatures’ that have used fire for millennia to shape local environments to diverse purposes. Our capacity for combustion has also forced global climatic changes and rendered the planet increasingly flammable, creating the conditions for progressively higher impact bushfires now and into the future. Meanwhile, governments in fire-prone countries such as Australia have continued to allow settlements to be established (and re-established) in wildland–urban interfaces. Like other ‘natural hazards’, bushfire is thereby a social phenomenon bound up with human values, practices and decisions. But, while studies of the social dimensions of ‘natural hazards’ are steadily rising, this scholarship has rarely addressed natural hazard management practitioners directly, precisely those authorised and entrusted to intervene in the distribution of hazard probabilities and consequences. This paper seeks to help remediate this research gap, illustrating how cultural, ecological, economic and political factors thoroughly condition hazard management and modes of intervention. Drawing on a case study in the Northern Territory’s Greater Darwin region, this paper suggests not only that examining such sociocultural realities provides new insights into hazards and their distribution, but also that attention to such issues is crucial to understanding our flammable future in the Anthropocene. 相似文献