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   21篇
  免费   0篇
  2022年   1篇
  2020年   1篇
  2019年   1篇
  2018年   1篇
  2017年   1篇
  2014年   1篇
  2013年   10篇
  2011年   2篇
  2008年   1篇
  2003年   1篇
  1998年   1篇
排序方式: 共有21条查询结果,搜索用时 15 毫秒
1.
2.
3.
The aim of this essay is to return to the genesis of the American agrarian myth in the eighteenth century, as a path to investigate the origins of the American national identity. This will be done by means of a comprehensive reassessment of St. John de Crèvecoeur, the Norman noble whose name is bound to the success of Letters from an American Farmer. His work contains the origins of the agrarian ideal as a peculiarly American phenomenon, prior to independence and before Republican ideology placed agrarian democracy at its foundations, making the project of agrarian development and democratic participation inseparable one from another. A Frenchman who became American and then, after 25 years, French again, Crèvecoeur represents an ideal lens through which to analyse the hitherto insufficiently explored contribution of French economic culture to the creation of American national identity. As a multi-faceted figure whose richness has been dominated by his image as the author of a best-selling autobiographical novel, Crèvecoeur is here also seen (partly through unpublished sources) as an agronomist who was no stranger to physiocracy and as a diplomat and French intellectual who always felt profoundly American. It was precisely this attachment to the land, seen as fundamental to the vision of a new and distinct form of peaceful cohabitation and democratic partnership, that became a political theme and an economic development project of the new nation and, as such, was a main plank of the agrarian ideology of Thomas Jefferson's Republicans.  相似文献   
4.
5.
The analysis of the composition of organic residues present in ancient pottery are an important source of information for archaeologists. The chemical characterisation of these materials gives information on diets, habits, technologies and original use of the vessels.  相似文献   
6.
Pollen, non-pollen palynomorphs and charcoal from a colluvial soil surrounded by prehistoric petroglyphs (Campo Lameiro, NW Spain) were studied in order to assess the nature of human activities and their impact on Holocene vegetation patterns. Several phases of anthropogenic impact were observed. (i) Between 7.6 and 6.5 ka cal BP, synanthropic taxa (Urtica dioica type, Plantago lanceolata type) and coprophilous fungi (e.g. Sporormiella-type) are indicative of early (pre-agricultural) creation of small patches of pasture using fire, possibly for incipient animal husbandry or as part of a deliberate strategy to improve game availability. Such activities only had a minor effect on the deciduous Quercus-dominated forest established earlier during the Holocene Thermal Maximum. (ii) Between 5.9 and 4.8 ka cal BP a more intense signal indicative of pastoral activity was detected, corresponding to the Neolithic period. (iii) Between 4.8 and 3.4 ka cal BP, which fits within the hypothetical timeframe of petroglyph creation, the synanthropic and humidity (e.g. Cyperaceae, Mougeotia) indicators diminished while charcoal concentration increased, which can be explained by Mid-Holocene cooling/drying (Neoglaciation) in combination with reduced human impact, or by non-pastoral activities in the area possibly in association with the development of the rock art culture, converting pasture to protected open ground through anthropogenic fires. (iv) During the Late Bronze Age and Early Iron Age (3.4–2.5 ka cal BP), grazing pressure and fire regime intensity are high, coinciding with evidence of regional forest regression, despite an amelioration in climate. (v) Later phases, not corresponding to prehistoric rock art contexts, include a phase of heavy grazing and reduced fire frequency (from ca. 2.5 to 1.2 ka cal BP) as well as the near complete elimination of the deciduous woodland, the expansion of ericaceous shrubland and the evidence of local agriculture and afforestation. These results are consistent with earlier studies in the area and highlight the spatial heterogeneity in the vegetation especially during periods of prehistoric anthropogenic interference.  相似文献   
7.
The colluvial soils of Galicia (NW Spain) are records of Holocene environmental change. In spite of the omnipresence of charcoal fragments in these soils, the effect of fires on the development of the Galician landscape and the potential role of past societies are poorly understood.  相似文献   
8.
The Northwest of Namibia bears a concentration of rock art that is among the highest in the world. One of the centres is Twyfelfontein, a cluster of sites surrounding a waterhole at the eastern fringe of the Namib Desert, classified as the prime rock engraving site in southern Africa and designated a UNESCO World Heritage Site. Recent prospections in the desert west of Twyfelfontein have resulted in the discovery of engravings and paintings that exceed those at the UNESCO site, both in quantity and quality. Our contribution to this volume in memory of Klavs Randsborg introduces this newly discovered archaeological landscape and discusses the connection between water ‐ a rare commodity in the desert environment ‐ and the rich array of rock art and other archaeological features found here.  相似文献   
9.
10.
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