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   21224篇
  免费   200篇
  国内免费   2篇
管理学   2992篇
民族学   160篇
人才学   3篇
人口学   3310篇
丛书文集   71篇
理论方法论   1592篇
综合类   507篇
社会学   10022篇
统计学   2769篇
  2020年   161篇
  2019年   256篇
  2018年   1872篇
  2017年   1988篇
  2016年   1294篇
  2015年   239篇
  2014年   295篇
  2013年   1849篇
  2012年   675篇
  2011年   1454篇
  2010年   1284篇
  2009年   1026篇
  2008年   1065篇
  2007年   1263篇
  2006年   275篇
  2005年   491篇
  2004年   505篇
  2003年   405篇
  2002年   304篇
  2001年   291篇
  2000年   250篇
  1999年   224篇
  1998年   171篇
  1997年   160篇
  1996年   190篇
  1995年   153篇
  1994年   158篇
  1993年   149篇
  1992年   156篇
  1991年   152篇
  1990年   158篇
  1989年   152篇
  1988年   142篇
  1987年   152篇
  1986年   119篇
  1985年   149篇
  1984年   163篇
  1983年   143篇
  1982年   126篇
  1981年   93篇
  1980年   112篇
  1979年   115篇
  1978年   105篇
  1977年   87篇
  1976年   90篇
  1975年   99篇
  1974年   94篇
  1973年   69篇
  1972年   61篇
  1971年   53篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
12.
Service-learning programs are not free from challenges brought about by lack of financial support, lack of widespread commitment from professors, community agencies, and recipients of service, and lack of knowledge and insight in students directly involved in such programs. While service-learning initiatives and programs serve positive functions for organizations and individuals, rhetorical accolades for service learning can distort or omit the realities of program implementation and sustained delivery. This paper specifically explores the following challenges connected to service-learning programs: (1) pedagogical difficulties; (2) student limitations; (3) time constraints; and (4) community cooperation.  相似文献   
13.
How are social networks organized and how much structure and openess do they have? The ambiguity of networking and the grade of organization are discussed and described theoretically and with an authentic example.  相似文献   
14.
15.
Spatial variation in soil inorganic nitrogen across an arid urban ecosystem   总被引:4,自引:1,他引:3  
We explored variations in inorganic soil nitrogen (N) concentrations across metropolitan Phoenix, Arizona, and the surrounding desert using a probability-based synoptic survey. Data were examined using spatial statistics on the entire region, as well as for the desert and urban sites separately. Concentrations of both NO3-N and NH4-N were markedly higher and more heterogeneous amongst urban compared to desert soils. Regional variation in soil NO3-N concentration was best explained by latitude, land use history, population density, along with percent cover of impervious surfaces and lawn, whereas soil NH4-N concentrations were related to only latitude and population density. Within the urban area, patterns in both soil NO3-N and NH4-N were best predicted by elevation, population density and type of irrigation in the surrounding neighborhood. Spatial autocorrelation of soil NO3-N concentrations explained 49% of variation among desert sites but was absent between urban sites. We suggest that inorganic soil N concentrations are controlled by a number of ‘local’ or ‘neighborhood’ human-related drivers in the city, rather than factors related to an urban-rural gradient.  相似文献   
16.
Empirical applications of poverty measurement often have to deal with a stochastic weighting variable such as household size. Within the framework of a bivariate distribution function defined over income and weight, I derive the limiting distributions of the decomposable poverty measures and of the ordinates of stochastic dominance curves. The poverty line is allowed to depend on the income distribution. It is shown how the results can be used to test hypotheses concerning changes in poverty. The inference procedures are briefly illustrated using Belgian data. An erratum to this article can be found at  相似文献   
17.
18.
19.
20.
This article provides a critical review of literature on the relationship between gender and the 'new paradigm' of health. An overview of the feminist critique of health is given, from the Women's Health Movement of the late 1960s and early feminist debates about medicalisation, to more recent discussions about structural inequalities between men and women, eating disorders, and AIDS. I then go on to explore the feminist response to the so-called 'new paradigm' of health (an approach that emphasises health promotion, individual responsibility for health, and body-monitoring). Arguments that health promotion initiatives target women and confirm their position as principal guardians of health within the family are considered, as well as literature on the breast cancer awareness campaign. I then explore the growing body of literature on masculinity and health, and its account of the relationship between gender and current ideas about healthiness. Finally, I offer up some suggestions for the direction a new feminist critique of health might take.  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