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   33043篇
  免费   1286篇
  2023年   462篇
  2022年   420篇
  2021年   517篇
  2020年   927篇
  2019年   1088篇
  2018年   1382篇
  2017年   1313篇
  2016年   1289篇
  2015年   946篇
  2014年   1022篇
  2013年   4109篇
  2012年   1321篇
  2011年   1526篇
  2010年   1606篇
  2009年   1778篇
  2008年   1496篇
  2007年   1340篇
  2006年   1306篇
  2005年   1107篇
  2004年   678篇
  2003年   655篇
  2002年   660篇
  2001年   633篇
  2000年   528篇
  1999年   454篇
  1998年   329篇
  1997年   301篇
  1996年   298篇
  1995年   288篇
  1994年   309篇
  1993年   268篇
  1992年   231篇
  1991年   194篇
  1990年   176篇
  1989年   228篇
  1988年   161篇
  1987年   177篇
  1986年   177篇
  1985年   178篇
  1984年   180篇
  1983年   195篇
  1982年   165篇
  1981年   167篇
  1980年   174篇
  1979年   157篇
  1978年   161篇
  1977年   169篇
  1976年   145篇
  1975年   141篇
  1974年   121篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Book reviews     
TRANSFORMATION SCENE: THE CHANGING CULTURE OF A NEW GUINEA VILLAGE, by Ian Hobgin. The International Library of Sociology and Social Reconstruction, Routledge and Kegan Paul, London, 1951. xiv + 326 pp. with 2 maps and 22 plates. Price 30s.

AN INTRODUCTION TO WORLD POLITICS. By Professor W. Friedmann. 2nd ed. London, 1952 (Macmillan & Co. Ltd.), pp. xiv + 384. (Maps and tables).

THE SOCIAL SERVICES OF MODERN ENGLAND. By M. Penelope Hall. Routledge, 1952. Pp. viii 332. Price 25s.  相似文献   

3.
Evidence from several disciplines supports the proposition that following the Wisconsinan and an initial but brief moist phase of the Holocene, there was a gradual drying trend in the mid-continent Prairie Peninsula that peaked about 7000 years ago, a pattern that was not reversed until about 4000 years ago. Except for minor perturbations, conditions during the past four millennia have essentially been similar to those of the present. Studies in palynology and geomorphology have shown that the climatic regimes of the early/mid Post-glacial had a marked influence on both the biota and landscape erosional patterns, especially along the margins of the Prairie Peninsula. Measurable changes in the landscape and attendant biota show a time-transgressive pattern of drought related phenomena recorded palaeo-ecologically from west to east.Few studies of archaeological sites in the Prairie Peninsula have examined the evidence in and around the sites themselves for data reflecting local environmental dynamics. In fact, earlier models proposed for explaining the evolution of food-procuring systems in eastern North America virtually ignored potential changes in the natural environment. This paper examines data from two archaeological sites along the prairie-forest border in Missouri that contain long cultural sequences. Evidence is presented that pronounced changes in the natural environment occurred and that these biophysical variables are indeed critical for understanding the evolution of food-procuring societies in the American Midwest.  相似文献   
4.
This paper explores the role of Hispania in the Atlantic route in Roman times. We analyse the different Atlantic Iberian territories along this route, based on recent archaeological advances and discoveries related to trade as well as the shipping infrastructure. The aim is to explain the origin and evolution of a new maritime area that was completely integrated with the political and commercial structure of the Empire, with trade routes that followed the coastal areas of the Iberian Peninsula all the way to the Mediterranean.  相似文献   
5.
Palace lanterns were important and highly visible decorations in the imperial palace in Beijing, China, during the Qing dynasty (1636–1912). Most lanterns had colourful tassels made of fibres. The study performed a comprehensive investigation of the materials and dyes used for palace lantern tassels preserved in The Palace Museum, Beijing. Eight samples with different colours, including yellow, green and red, from five palace lanterns were analysed. By using ultra-performance liquid chromatography combined with time-of-flight mass spectrometry, the compositions of the dyes were identified quickly, and thus the dyes' origins were explored. A X-ray fluorescence spectrometer assisted in the detection of whether a mordant was used during the dyeing process. As a result, the tassels were all made of silk, discovered through the use of microscopic observation and micro-Fourier transform infrared spectrometry analysis. Different dyeing techniques were found in these tassels: yellow tassels were dyed by cork tree or turmeric by a direct dyeing method; greens were dyed by pagoda bud with an iron mordant, or by the combination of cork tree and indigo using multi-dyeing method; and red tassels were coloured with different acid red industrial dyes. These results provide valuable data for the conservation of ancient textile tassels and contribute to the investigation of other hanging tags.  相似文献   
6.
We analyze the response of municipalities to the occurrence of natural disasters in terms of spending behavior, use of upper-tier transfers and recovery, using balance sheet data of about 8,000 Italian municipalities for the period 2000–2015, and the universe of earthquakes events. We find evidence of increasing expenditure for about 12 years after the shocks, with asymmetric responses between earthquake-related and unconditional grants, and heterogeneous flypaper effects across the country. While in northern municipalities expenditure tends to regress to pre-earthquake levels, southern municipalities stick to higher expenditure levels when grants drop. This evidence is coupled with a faster recovery of private income and housing prices in northern municipalities.  相似文献   
7.
Geographic research on neoliberalism has explored the restructuring of educational landscapes wrought through marketisation of preschool, school and higher-education provision and considered the responsibilisation of parents and children for educational outcomes. This study develops understanding of the contingent emergence of neoliberal educational reform, and its progressive and regressive impacts, through an examination of the burgeoning private tuition market in England and Wales. The paper outlines the contours of the previously hidden supplementary education industry, demonstrating that it reinforces regional and classed inequalities, while opening possibilities for ethnic minority advancement. Conceptually, the paper advances debate about socio-spatial specificity in neoliberal change, showing that the intersection of policy, free markets and consumer behaviour reshapes the educational landscape in ways that extend beyond state intention and control. Through these processes, contingent market forms are produced that offer social mobility for some, but ensure the social reproduction of enduring regimes of power.  相似文献   
8.
9.
Summary. The archaeology of animal sacrifice has attracted considerable attention, although discussions on the meanings and social effects of the practice in different contexts are rather under-developed. In the Aegean, classical antiquity has provided abundant literary, zooarchaeological and iconographic evidence (and has inspired some excellent studies) but it has also overshadowed discussion on sacrifice in other periods. Until recently, it was assumed that burnt animal sacrifices (i.e. the ritual burning of bones or parts of the carcass, often taken to be offerings to the deities) were absent from the pre-classical contexts. Recent studies have shown this not to be the case. This article reports and discusses evidence for burnt animal sacrifices from the sanctuary of Ayios Konstantinos at Methana, north-east Peloponnese. It constitutes the first, zooarchaeologically verified such evidence from a sanctuary context. The main sacrificial animals seem to have been juvenile pigs, which were transported as whole carcasses into the main cultic room; non-meaty parts were selected for burning whereas their meaty parts were first consumed by humans and then thrown into the fire (some neonatal pigs may have been thrown into the fire whole). The article integrates zooarchaeological, other contextual, and comparative archaeological evidence and explores the social roles and meanings of sacrifice in the Mycenaean context and more broadly. It is suggested that, rather than focusing on possible continuities of the practice through to the classical period (an issue which remains ambiguous), sacrifice should be meaningfully discussed within the broader framework of the archaeology of feasting, and more generally food consumption, as a socially important, sensory embodied experience. The evidence from Ayios Konstantinos may reveal a hitherto eluding phenomenon: small-scale, sacrificial-feasting ritual in a religious context, conferring cosmological and ideological powers on few individuals, through the participation in an intense, embodied, transcendental experience.  相似文献   
10.
The time dimension has not attracted enough attention in policy process research in China, yet speed is the most distinctive feature of China’s recent development. This article, based on observations of China’s policy practices, proposes a new research perspective for understanding how the Chinese government has been able to address policy challenges in an era of rapid transition. The approach adopted by the government allows decision makers to respond quickly to serious problems with a truncated decision-making process, and then implement the decisions through a more gradual deliberative process. The article examines China’s coal-mining industry reform as an empirical case to illustrate how this governance approach has been used to achieve major policy reform, namely property rights reform for coal mines, while simultaneously maintaining stability, regulating production safety, and stimulating industrial development. The article concludes with a discussion of the broad implications of this pattern for improving the effectiveness of public policy both in and outside China.  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