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   2874篇
  免费   157篇
管理学   261篇
民族学   37篇
人口学   404篇
丛书文集   1篇
理论方法论   192篇
综合类   42篇
社会学   1349篇
统计学   745篇
  2024年   4篇
  2023年   53篇
  2022年   39篇
  2021年   61篇
  2020年   143篇
  2019年   158篇
  2018年   266篇
  2017年   267篇
  2016年   226篇
  2015年   120篇
  2014年   184篇
  2013年   555篇
  2012年   246篇
  2011年   91篇
  2010年   85篇
  2009年   69篇
  2008年   73篇
  2007年   52篇
  2006年   36篇
  2005年   31篇
  2004年   39篇
  2003年   29篇
  2002年   31篇
  2001年   24篇
  2000年   22篇
  1999年   12篇
  1998年   14篇
  1997年   9篇
  1996年   8篇
  1995年   10篇
  1994年   3篇
  1993年   3篇
  1992年   10篇
  1991年   9篇
  1990年   5篇
  1989年   4篇
  1987年   3篇
  1986年   4篇
  1985年   6篇
  1984年   4篇
  1982年   3篇
  1981年   3篇
  1980年   2篇
  1975年   2篇
  1973年   2篇
  1972年   1篇
  1971年   1篇
  1969年   1篇
  1968年   2篇
  1967年   1篇
排序方式: 共有3031条查询结果,搜索用时 453 毫秒
991.
Statistical methods of dimension reduction and classification are used to obtain homogeneous local-area clustering with regard to the most relevant demographic parameters. The dimension reduction is conducted in two stages using Principal Component Analysis and a modified k-mean procedure is proposed to determine the final clusters. This clustering will be useful in future demographic studies at a local level, in particular to obtain forecasts of demographic rates and population projections. The region of Castile and León in Spain is used to illustrate the method. A Poisson model is used to explore the advantages of the new clustering over the more conventional classification based on provinces.  相似文献   
992.
Intentional condomless anal sex in HIV-risk contexts ("barebacking") has been heatedly debated in gay circles, the gay media, and, to a lesser degree, the mainstream media. Yet it has received little attention in the scientific literature. In order to better understand the reasons behind this behavior, we conducted a content analysis of messages posted on an Internet message board following Gay.com's decision to close a company-sponsored bareback chat room. Individuals posting messages self-identified in their online profiles as being mostly White/ European gay men residing in the US, with an average age of 35 years. Out of 130 messages, 62 (48%) were pro-barebacking, 55 (42%) were against barebacking, and 13 (10%) referred to other topics. The content analysis of the messages showed that both those in favor of and against barebacking felt well-informed about HIV/AIDS and the risks of HIV transmission. Those in favor considered condomless sex more enjoyable than sex with condoms (both in actual experience and in erotic imagery), felt that condomless sex conferred a sense of freedom, minimized the risks involved in barebacking (assuming that practitioners were already HIV infected and that the risk of superinfection was small), and ultimately believed that barebacking was a personal decision and responsibility. Those against barebacking believed the behavior was dangerous, advocated for condom use and personal and social responsibility, and felt barebackers needed to be sensitized to the burdens of HIV disease. Implications of these results are discussed, pointing out the need for further scientific inquiry in this area.  相似文献   
993.
Social Indicators Research - United Nations Development Program presented the Human Development Index for ranking the countries with regard to three dimensions, namely being knowledgeable, a long...  相似文献   
994.

Social workers may play an important role in the implementation of welfare policies targeted at the poor. Their norms, beliefs, and attitudes form local anti-poverty programmes and affect discretionary practices with their clients. Despite this, we know little about how social workers’ exposure to poverty shapes their attitudes towards poverty and their causal attributions for poverty. This study investigates social workers’ poverty explanations and the extent to which they depend on the level of local poverty. Data from a survey conducted among Hungarian social workers were analysed using multilevel linear regression models. To measure local poverty, we used a composite index of poverty, as well as a subjective measure of exposure to poverty. Our analysis revealed that most social workers explained poverty with structural causes, but individual blame was also frequent. Contrary to our hypothesis, the level of local poverty did not significantly increase the adoption of structural explanations but did raise the occurrence of individualistic ones. However, the effect of local poverty was non-linear: social workers tended to blame the poor for their poverty in the poorest municipalities, where multiple disadvantages are concentrated, while moderate poverty did not lead to such opinions. Our results suggest that efforts should be made to improve the poverty indicator framework to better understand the phenomenon of spatial concentration of multiple disadvantages and its consequences for the poor.

  相似文献   
995.
Social Indicators Research - Exploring the spatial variation of regional social inequality allows the design of public policies; therefore, this study analyzes this phenomenon in the Metropolitan...  相似文献   
996.
Journal of Population Research - This paper examines the childbearing behaviour of Polish migrant women and their descendants in Sweden. Also considering stayers in the country of origin, we rely...  相似文献   
997.
In this article, we examine the contradictions and lack of consistency between various levels of discourse relating to Roma educational policies. Policy-makers have claimed that political interventions would positively impact the progress of Roma. However, the results have been mixed. We argue here that teachers need to re-evaluate their roles as politically aware and culturally informed agents in order to guarantee social justice to a historically disadvantaged ethnic minority. Based on ethnographical fieldwork carried out over a two-year period with Spanish Roma children, both in schools and in their families, this study shows how intercultural policies have failed to impact the educational realities of Roma children.  相似文献   
998.
Evaluation designs for social programs are developed assuming minimal or no disruption from external shocks, such as natural disasters. This is because extremely rare shocks may not make it worthwhile to account for them in the design. Among extreme shocks is the 2010 Chile earthquake. Un Buen Comienzo (UBC), an ongoing early childhood program in Chile, was directly affected by the earthquake. This article discusses (a) the factors the UBC team considered for deciding whether to put on hold or continue implementation and data collection for this experimental study; and (b) how the team reached consensus on those decisions. A lesson learned is that the use of an experimental design for UBC insured that the evaluation's internal validity was not compromised by the earthquake's consequences, although cohort comparisons were compromised. Other lessons can be transferred to other contexts where external shocks affect an ongoing experimental or quasi-experimental impact evaluation.  相似文献   
999.
We develop a model of the market for federal funds that explicitly accounts for its two distinctive features: banks have to search for a suitable counterparty, and once they meet, both parties negotiate the size of the loan and the repayment. The theory is used to answer a number of positive and normative questions: What are the determinants of the fed funds rate? How does the market reallocate funds? Is the market able to achieve an efficient reallocation of funds? We also use the model for theoretical and quantitative analyses of policy issues facing modern central banks.  相似文献   
1000.
Objective: The objective of this study was to investigate whether misaligned or uncertain ambitions in adolescence influence the process of socioeconomic attainment. Methods: Using 34 years of longitudinal data from the British Cohort Study (BCS70), we considered whether youth with (1) misaligned ambitions (i.e., those who either over- or underestimate the level of education required for their desired occupation), (2) both low occupational aspirations and educational expectations (low-aligned ambitions), and (3) uncertainty with regard to their future occupations (uncertain ambitions) at age 16 experienced more unemployment spells, lower educational attainment, and lower hourly wages in adulthood compared to youth with high occupational aspirations and educational expectations (high-aligned ambitions). Results: Youth who hold misaligned or uncertain aspirations show long-term deficits in employment stability and educational attainment, which in turn leads to lower wage attainments at age 34. Conclusion: Misaligned and uncertain ambitions in adolescence compromise the construction of life paths and the realization of long-term educational and occupational goals.  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