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   265篇
  免费   3篇
  268篇
  2025年   1篇
  2024年   2篇
  2023年   4篇
  2022年   6篇
  2021年   5篇
  2020年   12篇
  2019年   11篇
  2018年   8篇
  2017年   7篇
  2016年   11篇
  2015年   8篇
  2014年   8篇
  2013年   36篇
  2012年   19篇
  2011年   20篇
  2010年   12篇
  2009年   15篇
  2008年   22篇
  2007年   10篇
  2006年   12篇
  2005年   11篇
  2004年   4篇
  2003年   5篇
  2002年   4篇
  2001年   2篇
  2000年   4篇
  1998年   1篇
  1994年   1篇
  1993年   1篇
  1982年   1篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1978年   2篇
排序方式: 共有268条查询结果,搜索用时 0 毫秒
21.
    
The aim of this paper is to present a method to facilitate age‐at‐death estimation of older individuals (generally those aged 50+ years) in a representative cemetery sample. The purpose of disaggregating catch‐all categories, such as 50+ years, is to enable the exploration of the elderly (those in their 50s, 60s, 70s or 80s) in the context of mortuary archaeology, bioarchaeology and/or palaeopathology. The methodological steps include the following: (1) assessment of occlusal tooth wear in an Anglo‐Saxon cemetery sample from Worthy Park, UK; (2) seriation of the sample, from youngest to oldest, based on the degree of tooth wear; (3) selection of an ethnographically derived model (known mortality profile) by which seriated individuals in the Worthy Park sample could be reallocated to more realistic or appropriate age classes; (4) reallocation of individuals in the seriated Worthy Park sample to the model age classes. A Hadza, Tanzania, hunter‐gatherer profile was chosen to model the Worthy Park sample, although others are available. By using this model, some 66% of the entire adult sample, originally allocated to the single final age category of 45+ years, was distributed across four new age categories from the mid‐40s to mid‐70s. Relatively straightforward, this approach provides a way to identify those individuals, 50+ years old, not normally sensitive to traditional age‐at‐death estimation methodologies currently available. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
22.
    
Recent excavations in Ciemna Cave in the Pr?dnik valley near Ojców, southern Poland have brought to light new stratigraphic and techno-typological evidence concerning Late Middle Palaeolithic groups and their cultural affinities. In 2007, excavations began in the hitherto-unexplored main chamber of Ciemna Cave, with the goal of clarifying the results of previous work in other parts of the cave. During excavation the rocky floor of the cave was reached. About 1000 stone artifacts have been collected to date. Three cultural traditions have been documented: Mousterian, Taubachian, and Micoquian. Within the Micoquian tradition, three cultural levels were observed, which enriches the previous understanding of occupational phases at the site. These findings permit revision of the traditional terms “Pr?dnik industry” and “Pr?dnik technique.”  相似文献   
23.
在冷战的国际大背景下,尼克松政府对苏实施的“缓和”战略使得华盛顿打出“中国牌”,致力于改善同北京的关系。而1969年3月中苏边界武装冲突则为美提供了一个契机。在寻求同中国对话的渠道上,华盛顿首先想到的是华沙渠道,即第135次和136次中美大使级会谈,并为此做了充分的准备。尽管史实证明:华沙渠道的进展不像华盛顿期望的那样顺利,但基本上完成了预期的任务:表达了改善对华关系的愿望,并阐明了不会同苏联合作主宰东亚事务的立场。在华沙渠道完成了既定任务之后,华盛顿又将同北京的联络转为巴基斯坦渠道。  相似文献   
24.
楚文化研究又一新成果--《新蔡葛陵楚墓》读后   总被引:1,自引:0,他引:1  
杨育彬 《江汉考古》2005,(1):95-97,86
河南新蔡葛陵楚墓,是近年来淮河流域考古中新发现的一座战国中期大型墓葬。其墓主人为平夜君成,是与楚王关系密切的重要封君。墓葬结构复杂,并有陵寝建筑遗存。出土有包括青铜器、玉器、漆木器和大量竹简在内的各类随葬品,还有人殉现象。在科学发掘和整理的基础上出版了《新蔡葛陵楚墓》一书,详细介绍和分析了考古资料所反映的楚国历史、葬俗、礼制、历法、手工工艺、书法艺术等诸多信息,是我国楚文化研究又一新成果。  相似文献   
25.
The rock art in Altamira Cave was the first ensemble of Palaeolithic parietal art to be identified scientifically (Sautuola, 1880). Due to the great thematic, technical and stylistic variety of the art in the cave, which constitutes one of the most complete Palaeolithic art ensembles, Altamira was listed as World Heritage by UNESCO in 1985. Uranium-series dating has recently been applied to figures on the decorated ceiling in the cave. Several motifs are partly covered by thin layers of calcite precipitates, whose formation process is datable by this method. The results provide the date when the calcite formed, which gives a minimum age for the underlying depictions. These results confirm that the parietal art at Altamira was produced during a prolonged period of time, at least 20,000 years (between 35,000 and 15,200 years ago), and that part of the ensemble corresponds to the Aurignacian period.  相似文献   
26.
Excavations at the Chagyrskaya Cave site in Gorny Altai have revealed a Mousteroid industry along with fragmented human remains. This study focuses on a left ulna from stratum 6a. Its size, proportions, symptoms of disease, and indicators of muscular activity, point to Neanderthal affinities. The bone is large, linking the individual with certain Near Eastern Neanderthal males such as Shanidar. Symptoms of what might be diagnosed as Forestier disease suggest likewise.  相似文献   
27.
胡家草场M12汉简律典的年代晚于张家山M247汉简《二年律令》,内容上相似,但在竹简容字等方面存在差别。本文借助胡家草场汉律,对《二年律令·盗律》《传食律》有关律文的编联进行调整,对于正确认识和理解《二年律令》具有重要意义。  相似文献   
28.
This paper examines recent trends in sex ratio at birth in all the major states of India, based on three rounds of the National Family Health Survey. It finds evidence of an increase in the ratio, particularly at the second-order birth among women having a first daughter in many states in the northwestern region of the country. Also, there are signs of daughter aversion emerging in Odisha, an eastern state. Based on parity progression ratios and the trend in sex selection, an attempt is made to estimate the peak of sex ratio at birth in India. With moderate intensification in sex selection in the northwestern region, sex ratio at birth is expected to reach a peak of 117–119 males per 100 females around the period 2021–2026. If, in addition, sex selection spreads further in the southeastern region, the sex ratio at birth in India could even increase to a level of 124.  相似文献   
29.
In contrast to East and South-east Asia, changes in marriage patterns have played a small role in reducing fertility in South Asia. While age at marriage for women has risen, it remains early, with the exception of Sri Lanka, and change has been slow. Except in Sri Lanka, the region has shown few signs that there will be a sizable population that will never marry. South Asia's marriage patterns reflect its cultural context and lesser socio-economic change but their precise effect is not simple or always predictable. The paper examines these issues in Bangladesh, where age at marriage is very early, and Sri Lanka, where it is much later. The study areas, Dhaka city and south-western Sri Lanka, are ones of great economic and social change. A particular examination is made of the way in which changes in the arrangement of marriage affect age at marriage.  相似文献   
30.
Abstract

After a 20-year hiatus (1955–1975) during which few archaeologists discussed fluoride dating, the method again received attention in the 1980s and 1990s when some argued for its validity. As a dating method, fluoride dating depends on the rate at which fluorine ions replace hydroxyl ions in osseous tissue. The rate of replacement is influenced by the properties of the skeletal part (SP), sediment chemistry (K), and sediment hydrology (H), and the replacement rate influences estimates of time. Calibrated AMS radiocarbon assays of 10 black bear (Ursus americanus) femora from a natural-trap cave in central Missouri are weakly correlated with fluorine concentrations, determined by neutron activation analysis in the 10 femora. Despite minimal variation in SP, K, and H, results indicate fluoride dating can be considered a valid dating method only in cases when the chronological validity of its results are confirmed with independent chronometric data. As similarities in fluorine amounts across specimens increase, provenience information and bone orientation data as well as fine resolution data on K and H become critical to the application of fluoride dating.  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