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   144篇
  免费   4篇
  148篇
  2024年   2篇
  2023年   3篇
  2021年   3篇
  2020年   6篇
  2019年   7篇
  2018年   18篇
  2017年   11篇
  2016年   5篇
  2015年   10篇
  2014年   11篇
  2013年   16篇
  2012年   8篇
  2011年   6篇
  2010年   7篇
  2009年   6篇
  2008年   6篇
  2007年   3篇
  2006年   4篇
  2004年   2篇
  2003年   2篇
  2002年   3篇
  2001年   2篇
  1999年   1篇
  1997年   2篇
  1995年   2篇
  1993年   1篇
  1990年   1篇
排序方式: 共有148条查询结果,搜索用时 15 毫秒
131.
We report a collaborative maritime archaeological project in Uruguay, one of several Latin American countries where the subject is undergoing review in terms of the ways it is practised and managed. Uruguay is typical of many states where there has been a tension between a heritage-based approach in which the results of investigations are viewed as publicly owned, as opposed to the profit motive in which commercial and personal gain is the underlying ethic. This project was conceived both as a way of assisting the Uruguayan Heritage Commission in promoting the former approach as well as advancing a programme of research into the age of global exploration. This paper sets out the rationale of the initial field season and reflects on subsequent developments.  相似文献   
132.
This paper examines skeletal and ancient DNA evidence in the study of suspected tuberculosis infection in the late pre-Hispanic and Colonial-era Lambayeque Valley Complex, north coast Peru (A.D. 900–1750). We integrate information on macroscopic lesion characteristics and distribution, radiographic and CT scan imagery, and analysis of Mycobacterium tuberculosis complex rpoB and IS6110 ancient DNA (aDNA) sequences. Destructive lesions were observed in the vertebral bodies of three precontact indigenous adult males, one colonial adolescent female, and in the cranium of a Colonial-period subadult. Assessment of lesion morphology and distribution led us to consider multiple diseases, but tuberculosis represents the most likely diagnostic option in all individuals. DNA was poorly preserved in all samples, but an IS6110 sequence was amplified in one precontact individual consistent with macroscopic diagnosis. These findings expand the geographic and temporal extent of tuberculosis to the late pre-Hispanic and Colonial north coast of Peru to highlight potential synergisms between diet, settlement patterns, and the evolution of Andean tuberculosis before and after European conquest. Moreover, this study helps focus several key questions in Andean tuberculosis research, including possible reassessment of the presence of the IS6110 sequence in the pre-Columbian Americas. Methodological considerations include differential diagnosis – especially with incomplete skeletons – and limitations of aDNA studies underscoring an approach integrating macroscopic, radiographic, and molecular lines of evidence in the paleopathological investigation of one of humankind’s most devastating and destabilizing diseases.  相似文献   
133.

Coastal adaptations have become an important topic in discussions about the evolution and dispersal of Homo sapiens. However, the actual distribution and potential relevance of coastal adaptations (broadly, the use of coastal resources and settlement along shorelines) in these processes remains debated, as is the claim that Neanderthals exhibited similar behaviors. To assess both questions, we performed a systematic review comparing coastal adaptations of H. sapiens during the African Middle Stone Age (MSA) with those of contemporaneous Neanderthals during the European Middle Paleolithic. In both species, systematic use of marine resources and coastal landscapes constitutes a consistent behavioral signature over?~?100,000 years (MIS 6–3) in several regions of Africa and Europe. We found more similarities than differences between Neanderthals and modern humans, with remaining disparities all in degree rather than kind. H. sapiens exploited a wider range of marine resources—particularly shellfish—more intensively. MSA shellfish-bearing sites are also more often associated with intense occupations on coastal landscapes, and more evidence of complex material culture such as shell beads. In terms of broader ramifications, Pleistocene coastal adaptations are best conceived of as an ‘add-on’ to previous adaptive strategies, complementing more frequently exploited inland resources and landscapes. Still, Neanderthals and modern humans increased their dietary breadth and quality, and added options for occupation and range expansion along coastlines. Potential evolutionary implications of these multi-generational behaviors include higher intakes of brain-selective nutrients as a basis for neurobiological changes connected to increased cognitive capacities, but also greater reproductive success, dispersal abilities and behavioral flexibility. Whether gradual differences between modern humans and Neanderthals stimulated different evolutionary trajectories is a question for future research.

  相似文献   
134.
135.
The recent increase in business services in terms of both value added and employment has had a positive effect on regional economies, helping them to create a comparative advantage and contributing to the general development of regional productive systems. This heterogeneous set of activities is characterized, among others, by its uneven distribution in the territory. In this paper we aim to identify the key factors that influence the location of business services within the NUTS 2 regions of the European Union. Using a multivariate analytical approach (combining a principal components factor analysis and a multiple linear regression by means of ordinary least squares), four key factors have been identified. In terms of their influence on the location of business services, we can pinpoint the following factors: urban dimension, competitiveness, accessibility and economic dynamism. It was found that business services tend to locate in urban, densely populated and dynamic areas with high levels of competitiveness and easy access.  相似文献   
136.
Indigenous resistance to the Spanish Crown in the Araucania region of south-central Chile is infrequently included in wider discussions of early American colonialism. Until recently, what has been inadequately addressed in these discussions is the parlamentos (peace treaties) associated with Spanish efforts to seize territorial control of the region. In this paper, we highlight the potential of landscape analysis to enhance our archival and archaeological understanding of the long historical confrontation between the Araucanians and the Spanish from the sixteenth to eighteenth centuries. The Spanish were unable to defeat the indigenous populations living south of the Bio Bio River, the formal frontier established between the Crown and the Araucanians. However, they enacted numerous parlamentos in hope of establishing military footholds. Because the Spaniards failed to conquer the region, parlamentos eventually developed into compromised acts of observing and monitoring military movements and of recruiting allied indigenous groups. On the basis of this interdisciplinary examination, we argue that Spanish parlamentos were a ‘panopticon’-like network of political surveillance, designed to provide a visible signal of the wider political activities taking place beyond the formal frontier. The panopticon model provides a metaphorical and conceptual framework for conceiving this aspect of Spanish and Araucanian relations and for defining one cause of successful indigenous resiliency to external influence.  相似文献   
137.
138.
Traditional taphonomic analyses do not consider the emergent properties resulting from the relationship of variables. Several of these emergent properties are expressed spatially. Here, we present a spatial taphonomic approach to the understanding of post-depositional processes affecting experimental assemblages modified by fluvial currents. Spatial statistical methods are a great tool to understand how different taphonomic variables relate at a spatial scale. The results of the application of this method to bone assemblages affected by low- and high-energy flows show the loss or modification of most of the original spatial taphonomic relationships. It also shows the degree of bone loss according to element, anatomical section and bone structure, and shape types. Anisotropy is identified in both experimental contexts. These results add new criteria to assess the impact of water flows in bone assemblages and contribute to define the properties of lag assemblages.  相似文献   
139.
Up until the late 1990s, the Balanta of Guinea‐Bissau constituted what could be described as a ‘deep rural society’, whose central identity was linked with rice production and cattle accumulation. At the same time, it could be argued that even in the early days after Independence in 1974, the social aspirations of Balanta young men matched those of other Guinean youths in their shared desire to get away from the strictures of gerontocracy and of rural life. Surprisingly, however, this study documents the agency of many rural Balanta young men in changing oppressive social rules, and in using agriculture as a means to fund their education, to feed their families and as a route to prosperity. The authors conclude that the persistent political instability in the country (most acutely felt in the capital city) and the national and global economic crises, together with the Balanta agricultural ethos and the softening of gerontocratic power, are at the root of this revaluing of rural livelihoods. This article challenges current dominant narratives about the crisis of young men in contemporary Africa and highlights the need to study the aspirations and achievements of youth in their rural–urban nexus from a historical and holistic perspective.  相似文献   
140.
In this article we review the history of the terms and ideas that have been used to conceptualize Paleolithic art since the end of the 19th century. Between 1900 and 1970, prehistoric representations were typically divided into two main groups: parietal art (including rock and cave art) and portable (or mobiliary) art. This classification gave rise to asymmetrical attitudes about Paleolithic images. In particular, many portable and nonfigurative representations were overlooked while a small number of cave paintings were praised for their realism. Although the portable/parietal division has remained a popular divide among archaeologists, in the last 30 years increasing numbers of specialists have crossed the boundaries established by these categories. They have developed new frameworks within which more kinds of images are meaningfully approached and incorporated into the analysis of Paleolithic art and symbolism. The emergence of new approaches to Pleistocene imagery is the result of a number of interrelated processes, including the globalization of Paleolithic art studies, the impact of new discoveries, and the development of new approaches to art, images, and symbolism.  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