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   3210篇
  免费   166篇
  2020年   34篇
  2019年   61篇
  2018年   101篇
  2017年   79篇
  2016年   135篇
  2015年   76篇
  2014年   78篇
  2013年   781篇
  2012年   89篇
  2011年   118篇
  2010年   89篇
  2009年   103篇
  2008年   73篇
  2007年   85篇
  2006年   84篇
  2005年   44篇
  2004年   44篇
  2003年   51篇
  2002年   36篇
  2001年   63篇
  2000年   50篇
  1999年   57篇
  1998年   49篇
  1997年   42篇
  1996年   39篇
  1995年   32篇
  1994年   20篇
  1993年   46篇
  1992年   33篇
  1991年   22篇
  1990年   32篇
  1989年   36篇
  1988年   27篇
  1987年   35篇
  1986年   29篇
  1985年   32篇
  1984年   25篇
  1983年   48篇
  1982年   36篇
  1981年   33篇
  1980年   33篇
  1979年   28篇
  1978年   34篇
  1977年   37篇
  1976年   32篇
  1975年   30篇
  1974年   27篇
  1973年   25篇
  1972年   29篇
  1971年   24篇
排序方式: 共有3376条查询结果,搜索用时 15 毫秒
941.
This article analyses the contestation over female citizenship in Spain's transition to democracy in the mid 1970s. It posits that the transition opened up a discursive space for the construction of a new concept of female citizenship, which was filled with competing images of female citizens, from the Francoist housewife to the consumer activist to the feminist. Through a close reading of the democratic press, the article explores the contradictions and tensions involved in imagining a new female citizen for a democratic Spain. With a focus on the representation of feminist citizenship, the article argues that the central tension surrounding female citizenship was the contradiction between new modes of female participation, new sets of rights and a framework of meaning which could not make sense of these changes. As a result, there was no comfortable place for the female citizen in the emerging master narrative of the transition.  相似文献   
942.
943.
944.
945.
Most of the Renaissance sgraffito tiles excavated in Udine (Italy) constitute a homogeous group, the tile body having a CaO/MgO molar ratio ?= 3:2. They were produced using a dolomite‐ and calcite‐containing clay fired at 900–950°C. A small group of samples, with a lower firing temperature and a CaO/MgO ratio ?= 2:3, was probably produced in a different factory. Slip and transparent glaze, characterized by optical microscopy and inductively coupled plasma atomic emission spectrometry, are an illite‐rich clay and a lead silicate, respectively.  相似文献   
946.
Correction factors for magnetic susceptibility measurements on thin (<c. 50 mm thick > artefacts have been determined experimentally for a KT‐5 Exploranium G S. instrument using prepared blocks of Whin Sill dolerite. The cor rection factor is large (> 1.4) for samples less than 10mm thick, and reduces to 1 01 for samples of 50mm thickness. Measurements on thin samples can also be affected by the backing or substrate material on which they are measured. ‘Background’material, for example, soil or plaster, can contribute significantly to recorded measurements on artefacts, particularly for thin artefacts with low susceptibilities  相似文献   
947.
Canonical correlation analysis (CCA) has the ability to deal with two sets of multivariate variables simultaneously and to produce both structural and spatial meanings. In view of the valuable insights to be gained, in this paper I examine the potential applications of CCA in regional science by describing its algorithm in a regional or spatial context. Next, I apply CCA to explore the mutually interdependent relationship between transport and development inChina's Zhujiang Delta. The results highlight the utility of CCA in revealing the structural and spatial patterns of two dominant and four subdominant transport-development relationships in this growing region of China.  相似文献   
948.
Major changes in personal mobility and in country town service provision have taken place in rural South Australia in the period 1968–69 to 1992–93. The later part of this period was one of major rural recession across Australia as a whole. The impact of this recession is considered by investigating changes in three different geographies of rural South Australians. These are their affective identification with place, their local social interaction and their commercial service consumption. There has been a shift of both commercial and social activity up through the hierarchy of settlement, but this is much more pronounced in the case of commercial activity. These differential rates of change are weakening the once mutually reinforcing links between community self‐identification, social interaction and trading patterns. The full impact of the rural crisis commencing in 1982–83 on social and commercial spatial patterns is unlikely to have been achieved by 1992–93, and adjustment is likely to continue.  相似文献   
949.
This paper examines one of a number of weapon‐injury victims from the cemetery at Church End in Cherry Hinton, Cambridge (Hertfordshire Archaeological Trust/Archaeological Solutions site HAT358), which was in use from the late Anglo‐Saxon period until after the Norman Conquest. Drawing on precedents set by forensic studies, palaeopathology and more traditional spatial cemetery analysis, assertions are made about the nature of the attack and its context. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   
950.
Eighth‐century glass fragments from the Crypta Balbi in Rome were analysed by inductively coupled plasma emission spectroscopy. The samples included fragments of artefacts as well as ingots of raw glass and wasters. All the fragments proved to be soda–lime glasses. Manganese‐to‐iron atomic ratios are highly variable and determine the colour of a large number of samples. Fairly high copper contents, generally associated with relatively high amounts of antimony and lead, were detected in some green and blue–green samples: this suggests recycling of glass in the form of opaque mosaic tesserae. All three elements are higher in eighth‐century than in previously analysed seventh‐century fragments. This may indicate greater recourse to recycled glass, related to a reduction in trade exchanges in the Mediterranean.  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