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   34830篇
  免费   620篇
  国内免费   1篇
管理学   4540篇
民族学   160篇
人才学   7篇
人口学   3322篇
丛书文集   178篇
教育普及   3篇
理论方法论   3198篇
现状及发展   2篇
综合类   469篇
社会学   17048篇
统计学   6524篇
  2023年   157篇
  2021年   190篇
  2020年   509篇
  2019年   766篇
  2018年   827篇
  2017年   1137篇
  2016年   846篇
  2015年   651篇
  2014年   823篇
  2013年   5647篇
  2012年   1160篇
  2011年   1089篇
  2010年   826篇
  2009年   752篇
  2008年   861篇
  2007年   895篇
  2006年   835篇
  2005年   791篇
  2004年   762篇
  2003年   697篇
  2002年   739篇
  2001年   892篇
  2000年   835篇
  1999年   767篇
  1998年   589篇
  1997年   544篇
  1996年   553篇
  1995年   528篇
  1994年   502篇
  1993年   497篇
  1992年   578篇
  1991年   560篇
  1990年   495篇
  1989年   506篇
  1988年   491篇
  1987年   440篇
  1986年   426篇
  1985年   477篇
  1984年   474篇
  1983年   447篇
  1982年   368篇
  1981年   314篇
  1980年   312篇
  1979年   337篇
  1978年   296篇
  1977年   276篇
  1976年   243篇
  1975年   258篇
  1974年   200篇
  1973年   178篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
Abstract Consumer concerns over pesticide residues and food additives have been growing in industrialized societies, including the United States and Japan. However, little comparative research has been carried out to determine which household characteristics may be significantly associated with these heightened concerns, and whether or not the same factors are useful for understanding variation in these worries in more than one society. This paper examines food safety attitudes in Seattle, Washington, and Kobe, Japan, and discovers that while the absolute level of expressed concern is higher in Kobe, the predictive power of household characteristics in explaining attitudinal differences within countries is similar. Implications for rural areas and future research on family structures in capitalist societies are discussed.  相似文献   
83.
In a previous paper (Bissell, 1989) some suggestions were offered for interpreting mean squares in saturated fractional designs where no independent estimate of experimental error is available. One of the methods leads to a simple numerical test of homogeneity which provides an objective accompaniment to half-Normal plotting of effects (Daniel, 1959) in 2n designs or exponential plotting of mean squares (Bissell, 1989) in 3n designs. A table of percentage points for a convenient test statistic is provided in this paper.  相似文献   
84.
85.
The robustness of Mauchly's sphericity test criterion when sampling from a mixture of two multivariate normal distributions is studied. The distribution of the sphericity test criterion when the sample covariance matrix has a non-central Wishart density of rank one is derived in terms of Meijer's G-functions; its distribution under the mixture model is then deduced. The robustness is studied by computing actual significance levels of the test under the mixture model using the critical values under the usual normal model.  相似文献   
86.
87.
The Contra Costa County educational program for juveniles found guilty of driving under the influence (DUI) was evaluated. Over 600 juveniles convicted of DUI from 1983 to 1988 formed the study group for this research and of these over 100 participated in the educational program. Assessment of program participants was conducted for knowledge, attitudes and behavior. Participants demonstrated increased knowledge, stronger attitudes against driving under the influence, and less risky alcohol and automobile related behaviors. County juvenile records analyzed by the logit procedure showed that class participants had a significantly lower number of repeat offenses compared to non-program participants that could not be explained by race, offense severity, age or gender.  相似文献   
88.
The present studies examined children's and adults' preferences for gender- or age-based categorization using similarity and inductive inference tasks. Four-year-olds, 6-year-olds, and adults looked at pictures of people and decided which of two was more like a target (similarity condition) or which shared a novel age- or gender-related property with the target (inference condition). Age or gender-based matches were possible. The results are consistent with previous findings that gender-based classification decreases with age. However, they also demonstrate that children use gender more for judging similarity than for making inferences about novel properties. Distinct patterns emerge from the two tasks: 6-year-olds and adults in both conditions categorize more by age than gender; 4-year-olds categorize by gender more than age in the similarity task, but by age more in the induction task. Only adults differentiated by property in the inference condition. These findings suggest that the salience of gender categories cannot entirely be attributed to their inductive potential. Gender has a salience beyond what would be predicted by its power for directing novel generalizations.  相似文献   
89.
Recent educational reforms in England have given considerable responsibilities for the overall administration of schools to governing bodies largely comprised of lay people. The paper explores the knowledge of education possessed by lay governors. Issues considered include: the systematicity of that knowledge; its possible sources, and how gender, ethnicity and social class influence the knowledge held and used by governors. Also examined are the question of whether governors are always knowledgeable actors within the context of education and the implications of this for schools and democratic participation in their governance. Data is derived from a four year qualitative multi-site case study of ten school governing bodies in two English local education authorities undertaken by the authors between 1988 and 1992.  相似文献   
90.
This article builds on theoretical work in the social movements literature that uses "master frames" (Snow and Benford 1992) to account for the cyclical clustering of social movement activity within certain historical periods. I identify "master frame alignment" as the dynamic process by which social movement actors rhetorically transform the master frames within a cycle of protest to make them resonate more clearly with a movement's unique social and historical situation. Just as frame alignment processes serve to link a movement organization's activities, goals, and ideology with those of a potential group of adherents, master frame alignment processes link the activities, goals, and ideology of a movement organization with those espoused within the broader symbolic atmosphere of the social movement. I present historical data from Irish newspapers and political documents to show how the Irish Sinn Féin movement, seeking self-determination during the early twentieth century, rhetorically reconstructed the master frames generated by the League of Nations in order to better exploit this particular window of political opportunity.  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