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   65篇
  免费   4篇
  2023年   1篇
  2019年   3篇
  2018年   2篇
  2017年   5篇
  2016年   7篇
  2015年   2篇
  2014年   6篇
  2013年   25篇
  2012年   2篇
  2011年   1篇
  2010年   1篇
  2009年   1篇
  2008年   1篇
  2007年   1篇
  2003年   1篇
  2001年   1篇
  1998年   1篇
  1993年   2篇
  1992年   2篇
  1987年   1篇
  1980年   1篇
  1976年   1篇
  1975年   1篇
排序方式: 共有69条查询结果,搜索用时 15 毫秒
21.
Desmond Dinan (Ed.), Encyclopedia of the European Union .
Pierre-Henri Lament and Marc Maresceau (Eds.), The State of the European Union
John McCormick, The European Union: Politics and Policies .
Stelios Stavridis, Elias Mossialos, Roger Morgan, and Howard Machin (Eds.), New Challenges to the European Union: Policies and Policy-Making .
Helen Wallace and William Wallace (Eds.), Policy-Making in the European Union .  相似文献   
22.
With the introduction of commercially available handheld XRF analysers, there is a growing problem that the results, simply taken at face value, are regarded as representative of the bulk gold alloys of the objects analysed in museums and used for treasure analysis. It is well known that surface analysis is problematic, and the aim of this study was to test whether non‐destructive surface analysis could be useful in grouping the very large numbers of fragmentary pieces in the Anglo‐Saxon Staffordshire Hoard. Surface and subsurface analyses of 16 objects from the Hoard were carried out by X‐ray fluorescence (XRF) and scanning electron microscopy with energy‐dispersive X‐ray analysis (SEM–EDX). The results indicate that there are significant but inconsistent levels of enrichment of the gold at the surface of many of these objects, due to the loss of both copper and silver. The significant loss of silver (up to 50% relative in some cases) suggests that some form of deliberately induced depletion gilding was carried out during manufacture to remove both silver and copper from the surface. In three cases, an increase in silver at the surface compared to the core metal was detected: this might tentatively be explained by redeposition from contact with silver objects during burial. These results have clear implications for the reliability and interpretation of surface analysis data of gold alloys from this period.  相似文献   
23.
24.
As institutions established to manage exiled British felons, the Tasmanian female factories consisted of four women's prisons located throughout the island colony. The material world of these institutions mediated internal power relations. Superintendents, Convict Department Officials, and the female prisoners themselves manipulated site landscapes. Today, one of these institutions remains as a managed historic site. Tourists experience a tidy and unthreatening landscape of Australia's heroic convict heritage. By juxtaposing excavated archaeological remains with public presentations of convict sites, I explore the position of female convicts from the original penal landscape to the shadows of Australian history.  相似文献   
25.
The quest for suitable data, data treatments and statistical methods for identifying the provenance of iron artifacts has led to a variety of analytical strategies. Researchers working on the problem have been slow to develop or adopt the use of multivariate statistical techniques, despite their successful implementation in other archaeomaterials sourcing frameworks. This paper explores the analytical potential of a comprehensive multivariate statistical strategy for identifying the primary production origins of bloomery iron artifacts using bulk chemical analyses of bloomery smelting slag and slag inclusions in iron artifacts. This strategy includes a multivariate model for identifying distinct slag inclusion types introduced during smelting and refining. Principal component analysis and linear discriminant analysis are then applied to smelting slag training sets to create multivariate provenance fields, the chemical distributions of which are defined by kernel density estimation. Single and multi-group evaluation methods are examined. Appropriate data transformations are discussed to facilitate the projection of the chemistry of “unknown” slag inclusions into the multidimensional space generated by the smelting slag groups of known provenance. The efficacy of this strategy is demonstrated through its application to a previously examined data set derived from three iron production experiments and a published archaeological example. Results indicate that an appropriately designed multivariate strategy can be an effective tool for evaluating provenance hypotheses for bloomery iron artifacts.  相似文献   
26.
This paper considers issues of sexual citizenship in light of new UK legislation that prosecutes the viewers of ‘extreme pornography’. Justified as an attempt to uphold public decency, government intervention seeks to prevent people seeing ‘extreme’ images not by limiting access to certain websites, but instead by intervening in the private consumption of these images. In this paper I draw on the discourses of those who have supported such intervention, and suggest that these arguments make a claim to space that defends the rights of some citizens over others. I examine the entwining of rights of expression, rights to identity and rights to safety. In conclusion, I argue that sexual citizenship is not just about the right to occupy actual physical places but also the right to inhabit the virtual—cyberspace. I hence argue that the internet plays a key role in transforming the sexual geographies of public and private.  相似文献   
27.
A close examination of the Illinois National Guard (ING) between 1870 and 1916 demonstrates that contrary to the commonplace assumption of a homogeneous, white, middle class, native‐born membership, the ING had a very heterogeneous membership, drawing in rural and urban men, and men from an array of ethnicities, races and economic circumstances. Information on 2245 members drawn from enlistment data and the federal census, combined with evidence drawn from a wide variety of textual sources firmly establishes that this organization attracted men from a broad range of backgrounds. The ING stands out against other male‐only organizations of its time as an organization whose membership was consistently drawn from a broad cross‐section of the American population. The Illinois National Guard of the late nineteenth and early twentieth centuries offered an organization that could unite many American men across cultural and social boundaries at a time when there was much to divide them.  相似文献   
28.
29.
30.
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