全文获取类型
收费全文 | 8017篇 |
免费 | 212篇 |
国内免费 | 3篇 |
专业分类
管理学 | 1201篇 |
民族学 | 61篇 |
人才学 | 9篇 |
人口学 | 662篇 |
丛书文集 | 57篇 |
理论方法论 | 953篇 |
综合类 | 59篇 |
社会学 | 4226篇 |
统计学 | 1004篇 |
出版年
2023年 | 46篇 |
2022年 | 34篇 |
2021年 | 55篇 |
2020年 | 134篇 |
2019年 | 211篇 |
2018年 | 251篇 |
2017年 | 269篇 |
2016年 | 262篇 |
2015年 | 178篇 |
2014年 | 208篇 |
2013年 | 1289篇 |
2012年 | 286篇 |
2011年 | 308篇 |
2010年 | 233篇 |
2009年 | 202篇 |
2008年 | 244篇 |
2007年 | 262篇 |
2006年 | 249篇 |
2005年 | 256篇 |
2004年 | 240篇 |
2003年 | 210篇 |
2002年 | 213篇 |
2001年 | 150篇 |
2000年 | 188篇 |
1999年 | 152篇 |
1998年 | 140篇 |
1997年 | 133篇 |
1996年 | 123篇 |
1995年 | 102篇 |
1994年 | 132篇 |
1993年 | 112篇 |
1992年 | 120篇 |
1991年 | 93篇 |
1990年 | 81篇 |
1989年 | 73篇 |
1988年 | 84篇 |
1987年 | 63篇 |
1986年 | 59篇 |
1985年 | 81篇 |
1984年 | 85篇 |
1983年 | 66篇 |
1982年 | 75篇 |
1981年 | 58篇 |
1980年 | 65篇 |
1979年 | 56篇 |
1978年 | 39篇 |
1977年 | 42篇 |
1976年 | 56篇 |
1975年 | 28篇 |
1974年 | 42篇 |
排序方式: 共有8232条查询结果,搜索用时 0 毫秒
991.
QUANTILES OF SUMS AND EXPECTED VALUES OF ORDERED SUMS 总被引:1,自引:0,他引:1
Watson & Gordon (1986) investigated the relationship between the quantiles of a sum of independent continuous random variables and the sum of the individual quantiles. In this note some further results are obtained. Also corresponding relationships are developed for the expected values of the order statistics of a sum, and for the sum of the expected values of the individual order statistics. 相似文献
992.
993.
Research and experience have shown that it can be difficult to get citizens to pay attention to risk messages and preparedness information in the absence of an actual emergency. As the use computerized systems that alert the public to hazards by automatically ringing their home phones increases, we thought it important to ask if tests of these "call down" systems can also be used to convey preemergency information. We worked with a local government to add instructions on how to shelter-in-place to the message on a routine test of a call down system. We then surveyed a test group and a control group before and after the test call and a second control group on after the call. The results indicate that the test call raised awareness of the emergency notification system without generating undue concern about the possibility of a chemical accident. Those who received the test call demonstrated significant improvements in their knowledge of how to shelter-in-place while no such improvement was observed in those who did not get the call. While the nature of the sample used in this study limits generalizability, we feel this outcome is positive enough to warrant further exploration of this method of disseminating risk information and preparedness instructions. 相似文献
994.
This article draws on a household survey of giving and volunteering undertaken as part of the Giving Australia project to explore the relationship between religion and the giving behaviour of adult Australians. We find that people who identify themselves as having a religion are more likely to give and to give more on average than people who do not but that this relationship is produced by a subset of this group; namely, people who regularly attend religious services. Indeed, the likelihood of giving and average amounts given by givers over a year increase with levels of attendance at religious services. The relationship holds even after allowing for other factors that affect the likelihood of a person giving and the amount given. It also holds for giving to nonreligious causes (ie when giving to religion is omitted). However, when we also omit giving to charities and look at giving to civic causes alone we find that the frequency of attendance at religious services has an ambiguous relationship with giving. A suggestion in overseas literature that it is participation in religious groups, rather than attendance at religious services that is associated with giving is not supported. 相似文献
995.
Paul S. Clarke Peter W. F. Smith 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2004,66(2):357-368
Summary. Log-linear models for multiway contingency tables where one variable is subject to non-ignorable non-response will often yield boundary solutions, with the probability of non-respondents being classified in some cells of the table estimated as 0. The paper considers the effect of this non-standard behaviour on two methods of interval estimation based on the distribution of the maximum likelihood estimator. The first method relies on the estimator being approximately normally distributed with variance equal to the inverse of the information matrix. It is shown that the information matrix is singular for boundary solutions, but intervals can be calculated after a simple transformation. For the second method, based on the bootstrap, asymptotic results suggest that the coverage properties may be poor for boundary solutions. Both methods are compared with profile likelihood intervals in a simulation study based on data from the British General Election Panel Study. The results of this study indicate that all three methods perform poorly for a parameter of the non-response model, whereas they all perform well for a parameter of the margin model, irrespective of whether or not there is a boundary solution. 相似文献
996.
David L. Leal 《Social science quarterly》2004,85(5):1227-1237
Objectives. Voucher proponents, as well as some researchers, argue that minorities and individuals of relatively low socioeconomic status (SES) particularly favor school vouchers. Little work has specifically explored Latino attitudes, with the focus typically on African‐American opinions. This article will therefore examine whether Latinos hold unique attitudes toward vouchers. Methods. Ordinal probit regression analysis of a recent national survey of Latinos, African Americans, and Anglos (non‐Latino whites). Results. In the aggregate, Latinos and African Americans are more likely than Anglos to support vouchers. The Latino population variable is statistically insignificant, however, while the African‐American measure is significant and positive. When the aggregate Latino variable is disaggregated into four major Latino national‐origin groups, Puerto Ricans are shown to hold uniquely favorable opinions about vouchers. In addition, there are no opinion differences by income and education. Conclusions. When Catholicism is taken into account, the voucher opinions of Latinos and Anglos are generally indistinct. This suggests that aggregate Latino support for vouchers may drop if Catholic affiliation further declines. 相似文献
997.
David Rubinstein 《Journal for the theory of social behaviour》2004,34(1):55-71
Ludwig Wittgenstein imagines a variety of eccentric social practices—like a tribe trained "to give no expression of feeling of any kind". But he also speaks of "the common behavior of mankind" that is rooted in "natural/primitive reactions". This emphasis on the uniformities of human behavior raises questions about the plausibility of some of his imagined language games. Indeed, it suggests the claim of evolutionary psychologists that there are biologically based human universals that shape social practices. But in contrast to E.O. Wilson's belief that "genes hold culture on a leash", Wittgenstein sees culture as a mediator—rather than a conduit—of "natural reactions". This suggests that social science can incorporate the claims of evolutionary psychology without scanting the centrality of culture in action and allows that nature can be overwhelmed by culture. 相似文献
998.
Kenneth I. Maton Daniel Dodgen Mariano R. Sto. Domingo David B. Larson 《The Journal of social issues》2005,61(4):847-867
The development of social policy related to religion has received increasing focus in recent years, yet psychology continues to play a relatively minor role in this important domain. In the current article, religion's positive and negative influences as a meaning system on individual, community, and societal well-being are delineated. The challenges facing psychology in contributing to public policy development in the religious arena are examined, challenges that stem from profound differences in the meaning systems of religion, government, and psychology. These challenges notwithstanding, a number of different pathways in the domains of applied research, community practice, and policy development are delineated through which psychology can help to maximize positive, and minimize negative, outcomes in the religion and social policy arena. 相似文献
999.
Richard P. Barth Thomas M. Crea† Karen John‡ June Thoburn§ David Quinton¶ 《Child & Family Social Work》2005,10(4):257-268
Elements of attachment theory have been embraced by practitioners endeavouring to assist foster and adopted children and their parents. Attachment theory articulates the potential risks of experiencing multiple caregivers; emphasizes the importance of close social relationships to development; and recognizes that substitute parents may not always have close relationships with children who have experienced adversities before joining them. Attachment theory offers concerned parents what they believe to be a scientific explanation about their lack of the close, satisfying parent–child relationship they desire. Yet the scientific base of attachment theory is limited both in terms of its ability to predict future behaviours, and especially with regard to its use as the underpinning theory for therapeutic intervention with children experiencing conduct problems. There is a critical need to review the role of attachment theory in child and family services and to consider its place among other explanations for children's disturbing behaviour. An important step towards pursuing alternative approaches is for researchers and practitioners to understand the reasons the attachment paradigm appeals to so many adoptive and foster parents, given the apparent widespread prevalence of attachment‐based interventions. Such understanding might assist in the development of adoption‐sensitive uses of appropriate evidence‐based treatment approaches. 相似文献
1000.
This research examined adolescents' gender identity in relation to the peer context and their self‐concept. Participants were 229 adolescents who completed questionnaire measures of self‐concept and multidimensional gender identity. Regression analysis indicated peer acceptance partially mediated the relation between self‐perceived gender typicality and self‐worth. Cluster analysis revealed four groups of adolescents with differing profiles of self‐perceived gender typicality, felt peer pressure for gender conformity, and peer acceptance. Findings highlight the inherently social and contextual nature of gender identity. Also, the pathologizing of gender‐nonconforming youth is discussed. 相似文献