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   120篇
  免费   0篇
  120篇
  2020年   2篇
  2019年   6篇
  2018年   4篇
  2017年   4篇
  2016年   8篇
  2015年   2篇
  2013年   31篇
  2012年   4篇
  2011年   5篇
  2010年   9篇
  2009年   7篇
  2008年   6篇
  2007年   4篇
  2006年   5篇
  2005年   3篇
  2004年   1篇
  2002年   2篇
  2001年   5篇
  2000年   2篇
  1998年   2篇
  1994年   2篇
  1984年   2篇
  1983年   2篇
  1980年   1篇
  1978年   1篇
排序方式: 共有120条查询结果,搜索用时 15 毫秒
11.
Obama's election in 2008 as the United States’ first self-styled Pacific President drew a hearty round of ‘end of the affair’ editorials about Anglo-American relations. His first term was littered with ‘snubgates’, serious irritations in policy areas regarded as being core to the special relationship, and indications of an accelerating US departure from Europe with his premier foreign-policy strategy declared to be a pivot to Asia. His return for a second term in 2013 augers a continuation of first-term adjustments in US foreign policy and greater domestic focus given a divided Congress and a bitterly split and war-weary United States with domestic priorities to the fore. Doomsayers - or so-called terminalists - have been repeatedly gainsaid by the Lazarus-like quality of the relationship in the past but can the Anglo-American special relationship survive in the Obama environment? This article suggests it can and sets out the author's rather unfashionable argument in four parts: the weight of history; the canons of international-relations theory; the importance of considering interest and sentiment in explaining the special relationship's resilience; and a relativist argument that suggests the United States still really does have no better ally than the United Kingdom.  相似文献   
12.
    
Abstract

Much has been written about constructing memories of place, yet few speak of the difficulties in dealing with lost, partial and fragmented histories of place. We argue that behind the idea of ‘memory of place’ is an assumption that these memories are recoverable and can build a sense of place. Our research has led us to assume the opposite: not just that the fragments of history cannot build a complete memory of place, but that this understanding of memory and place is itself skewed by its reliance on materiality. This paper stems from a project that explores the place of spirituality in everyday life through insights from Spiritualist churches and their congregations. Whilst evidence of Spiritualist locations can be partially obtained through documentary records, a key challenge has been in understanding practices in the context of Spiritualism’s disassociation with materiality and the centrality of Spirit. The paper concludes that retracing Spiritualism’s past, and capturing its contemporary spiritual practices, uncovers a ‘memory of place’ that is not only in constant transience, but that can only be known through Spirit.  相似文献   
13.
    
  相似文献   
14.
    
  相似文献   
15.
16.
This paper presents the results of a project aimed at investigating the deterioration of organic remains at the Mesolithic site of Star Carr. Analyses of pH, Electrical Conductivity and Redox Potential are reported from borehole transects across the unexcavated part of the site. A comparison of field and laboratory measurements is made, leading to the characterisation of different preservation zones and identification of ‘vulnerable’ sediments at the site. These data are augmented by geochemical analyses of contemporary borehole sequences and adjacent historic monoliths. Analysis of surface water and groundwater has also been undertaken to assist in the interpretation of the site hydrology and geochemistry. The relationship between ‘natural’ geology and preservation potential, and the evidence for a ‘halo’ preservation effect in virgin sediments adjacent to previous archaeology trenches is investigated.  相似文献   
17.
Opaline phytoliths are important microfossils used in archaeological and ecological research. Relatively little is known about the stability of phytoliths after burial. Under alkaline pH conditions they can dissolve, and mechanical disturbances can cause a loss of their more delicate appendages. Here we present an experimental study of phytolith stability (combination of solubility and abrasion). Modern and fossil phytoliths were extracted from wheat using new methods to minimize dissolution, and by burning in an oven. These assemblages were placed in a solution buffered to pH 10 and maintained under constant temperature and shaking conditions. The silicon concentrations in the solution were monitored once a week for 5 weeks. The phytolith morphologies in each assemblage were determined at the outset of the experiment and after 5 weeks. The results show that there are differences in stability between various assemblages. Modern inflorescence wheat phytolith assemblages are more unstable than those from leaves/stems. Burnt assemblages are less stable than unburnt assemblages, and a fossil phytolith assemblage about 3000 years old is more stable than the modern wheat assemblages. The results also show that individual phytolith morphotypes have different stabilities, and as a result of dissolution and abrasion, some morphotypes may resemble others. This study further shows that archaeological and/or paleo-environmental interpretation of phytolith assemblages may change with the assemblage’s state of preservation.  相似文献   
18.
General Index     
Steve Roskams 《考古杂志》2013,170(1):525-541
  相似文献   
19.
The Central Anatolian Volcanic Province (CAVP) in Turkey preserves widespread deposits of Quaternary tephra, presently associated with a small but growing number of Paleolithic archaeological sites. We use multivariate analyses of the abundances of a suite of nine major and minor element oxides determined by electron probe microanalysis. From these data, we construct a classificatory model for correlating distal tephra to one of five volcanic edifices or eruptive phases within the CAVP. Application of this model to distal deposits of primary tephra-fall and reworked tuffaceous sediments from the archaeological sites of Körkuyu and Kaletepe Deresi 3 indicates Late to possibly Early Pleistocene ages for the artifact assemblages there, and provides a fundamental tephrostratigraphic framework to examine spatial and temporal variation in hominin behavior comparable to that of other regions, such as eastern Africa.  相似文献   
20.
The presence of many phytolith-rich layers in late Bronze and Iron Age deposits at Tel Dor, Israel, are indicative of specific locations where plants were concentrated. Detailed studies of six of these phytolith-rich layers and associated sediments from Tel Dor show that the phytoliths were derived mainly from wild and domestic grasses. The most common domestic grass was the cereal Triticum aestivum (bread wheat). Three of these layers have a microlaminated microstructure, associated dung spherulites and phosphate nodules; characteristics that all point to the phytolith-rich layers having formed from dung in animal enclosures. In two of the layers, the microlaminated structure is absent while dung spherulites and phosphate nodules are present, suggesting that these too originate from dung that was not deposited in an enclosure. The sixth layer is microlaminated but does not contain spherulites. We thus cannot suggest a parsimonious explanation of its observed properties. Concentrations of burnt phytoliths are present in three locations, implying that dung was either burnt in situ or the ashes from burnt dung were redeposited. The transformation of dung accumulations into phytolith-rich layers involves a loss of organic material and hence a significant reduction in sediment volume, which is clearly apparent in the stratigraphy of some of the locations examined. The volume reduction can be observed in the macrostratigraphy and has important implications with regard to macrostratigraphic interpretation. The presence of abundant phytolith-rich layers on the tell has significant implications for the concept of ‘urbanism’ during these periods.  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