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   288篇
  免费   13篇
  301篇
  2023年   1篇
  2021年   1篇
  2020年   9篇
  2019年   6篇
  2018年   11篇
  2017年   7篇
  2016年   12篇
  2015年   9篇
  2014年   8篇
  2013年   69篇
  2012年   5篇
  2011年   7篇
  2010年   7篇
  2009年   5篇
  2008年   14篇
  2007年   8篇
  2006年   12篇
  2005年   4篇
  2004年   3篇
  2002年   5篇
  2001年   5篇
  2000年   4篇
  1999年   4篇
  1998年   3篇
  1997年   8篇
  1996年   3篇
  1995年   4篇
  1994年   1篇
  1993年   5篇
  1992年   3篇
  1991年   2篇
  1990年   1篇
  1987年   2篇
  1986年   3篇
  1985年   9篇
  1984年   6篇
  1983年   7篇
  1982年   3篇
  1981年   2篇
  1980年   4篇
  1979年   1篇
  1978年   5篇
  1977年   3篇
  1974年   1篇
  1972年   1篇
  1971年   2篇
  1970年   1篇
  1969年   3篇
  1952年   1篇
  1950年   1篇
排序方式: 共有301条查询结果,搜索用时 0 毫秒
81.
82.
This article examines the ways that specific interest groups within the American nation use material culture to attempt to define the parameters of a shared national identity. Case studies are drawn from the first decades of the twentieth century (1900–30) and the early years of the 21st century (2000–12). Analysis of landscapes and artifacts excavated from the working-class industrial town of Berwind in southern Colorado show how an early twentieth-century corporation and its immigrant workers used mundane objects to debate, through symbols, the meanings of citizenship and the nation. An analysis of yellow ribbon magnets used and created by supporters of the Iraq War (2003+) in the 21st century will show how material symbols are deployed in an attempt to reinforce a specific, but contested vision of the nation and the nature of her citizenry.  相似文献   
83.
Limestone outcrops that form a north-south belt approximately 1.4 km long, 15 km east of Manilla and previously referred to as the Uralba Beds, and associated rocks, are shown to be an olistostromal component of the Wisemans Arm Formation. Elongate olistoliths up to 100 m in length are flanked by limestone conglomerate with clasts set in a volcaniclastic matrix derived from a range of volcanic rock types. Volcanic olistoliths, including a mass of ankaramitic basalt, are also present. Conodont faunas of differing ages were obtained from various outcrops. A Late Ordovician (Eastonian, Ea3) fauna of over 400 elements from some outcrops is identical to one recently documented from elsewhere in the Wisemans Arm Formation. A small Early Silurian (late Llandovery-early Wenlock) fauna from four outcrops (including two formerly thought to be Ordovician) comprises the first documented conodont fauna of this age from the New England Fold Belt.  相似文献   
84.
ABSTRACT

The manifest representation of space and place is essential to good archaeology. Our ability to document and relate these concepts, projected into the past and reflected in the present, has increased tremendously with the expansion and availability of technology. We present recent efforts to further document a well-known place in the cultural landscape: the Kolomoki site in southwestern Georgia, occupied primarily during the Middle and Late Woodland periods. Specifically, we summarize older investigations of Mound A, then present the results of recent terrestrial LiDAR documentation. Our work substantiates the claim that Mound A was the largest Woodland-period mound in Eastern North America in terms of overall volume.  相似文献   
85.
The distribution of fixed productive assets is more unequal than the distribution of land in rural China, but the two distributions to some degree offset each other because of economic specialization and the role of rural industrial and commercial enterprises. Surprisingly, the distribution of fixed productive assets has the most equalizing effect on the distribution of rural wealth. This is partly due to the mixed ownership patterns of assets. The households with the highest values of fixed productive assets are not particularly rich, and neither are assetless households particularly poor. The distribution of fixed assets is a key reason why the distribution of wealth in rural China is actually more equal than the distribution of income, a result which is most unusual for a developing country.  相似文献   
86.
87.
Although the birth of Classical Greece is often attributed to the constitutional reforms of Cleisthenes (508/507 BCE), the achievement of an economically minded government under the Peisistratid tyrant Hippias (527–510 BCE) potentially paved the way by advancing Athenian silver for exportation in international trade. It is proposed here that new silver technology, which initiated the transition from acquiring silver from ‘dry’ silver ores to silver-bearing lead ores, was introduced to Greece during the time of the Peisistratids (561–510 BCE). Massive exploitation of silver-bearing lead ores at Laurion in Attica, which later financed the construction of a war navy, appears evident in the lead pollution records of Greenland ice, lead isotopic analyses of sixth-century BCE Attic silver coins and late Iron Age Levantine hacksilver, and is reflected in the numbers of lead votive figurines at sanctuaries in Sparta. Against the backdrop of the threat of war with Persia and an imminent Spartan invasion which resulted in the overthrow of Hippias (510 BCE), it is considered that a political transition occurred because Greece was both geologically and politically disposed to adopt this labour-intensive silver technology which helped to initiate, fund and protect the radical social experiment that became known as Classical Greece.  相似文献   
88.
The study of genocide requires a geographic approach that looks at how genocidal actions are purposefully planned to target specific groups and areas, methodically implemented through expulsions and murder, and politically intertwined with popular aspirations of territorial nationalism. A geographic focus is used here to discuss the concept of genocide, its recurrence in the twentieth century, its formulation under international law, and its eruption in Bosnia and Rwanda. In this comparative approach, geography-linked concepts such as Lebensraum , territorial nationalism, forced migration, and ethnic cleansing are used to explain the production of genocide and its consequences.  相似文献   
89.
Microcredit is a concept that has gained widespread acceptance by international development agencies and major donors. It is viewed as a way to correct both governmental and market failure in Sub-Saharan Africa. Many view microcredit as a method for linking the formal and informal sectors of African economies to increase the reach of the formal sector. Extending the reach of the formal economy through microcredit is possible, and desirable, depending on macroeconomic reforms, respect for traditional financing relationships, and local control of institutions. However, very little has been done to determine the extent to which microcredit programs actually increase economic well-being. The model program, Grameen Bank of Bangladesh, has been studied and evaluated, but replications may not be inherently successful. The literature accepts that microcredit will increase economic well-being, if programs are correctly designed. Program design issues cannot be resolved, however, until economic well-being is measured and associated with specific designs.  相似文献   
90.
Four late medieval burials were excavated at the site of Lepenski Vir in the Iron Gates Gorge, Serbia. One of the individuals, Lepenski Vir 62, exhibits evidence of a sharp‐force trauma on the left parietal, consistent with a combat wound. None of the other contemporaneous individuals show any evidence of trauma or other pathology on the few preserved bones. We argue that the skeletons belong to soldiers involved in the border warfare on the Danube which was quite common at the end of the 14th and the first half of the 15th century between Serbian, Hungarian and Turkish forces. Copyright © 2007 John Wiley & Sons, Ltd.  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