全文获取类型
收费全文 | 128篇 |
免费 | 8篇 |
专业分类
管理学 | 14篇 |
民族学 | 1篇 |
人口学 | 11篇 |
理论方法论 | 15篇 |
社会学 | 60篇 |
统计学 | 35篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 5篇 |
2019年 | 4篇 |
2018年 | 12篇 |
2017年 | 7篇 |
2016年 | 6篇 |
2015年 | 2篇 |
2014年 | 6篇 |
2013年 | 11篇 |
2012年 | 8篇 |
2011年 | 4篇 |
2010年 | 4篇 |
2009年 | 3篇 |
2008年 | 10篇 |
2007年 | 5篇 |
2006年 | 5篇 |
2005年 | 4篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 7篇 |
2001年 | 3篇 |
2000年 | 2篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1997年 | 3篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1979年 | 2篇 |
1978年 | 1篇 |
排序方式: 共有136条查询结果,搜索用时 437 毫秒
11.
Luc Sindjoun 《International Review of Sociology》2009,19(1):23-50
Despite the fact that the study of African politics is dominated by ethical postures, as can be seen with the self-proclaimed qualifications of African states and leaders, the debate on ethics per se is not common. The first challenge of this article is to address ethics as an entry point for African political studies. The second challenge is epistemological. It is related to my efforts to examine values and ideals as facts that should be considered seriously in political science. Therefore, positivism is not incompatible with values and ideals. They are part of the political universe. In this regard, African politics shows the symbolic triumph of democratic ethics. Current facts militate for the upholding of those values. 相似文献
12.
13.
We consider the situation where one wants to maximise a functionf(θ,x) with respect tox, with θ unknown and estimated from observationsy
k
. This may correspond to the case of a regression model, where one observesy
k
=f(θ,x
k
)+ε
k
, with ε
k
some random error, or to the Bernoulli case wherey
k
∈{0, 1}, with Pr[y
k
=1|θ,x
k
|=f(θ,x
k
). Special attention is given to sequences given by
, with
an estimated value of θ obtained from (x1, y1),...,(x
k
,y
k
) andd
k
(x) a penalty for poor estimation. Approximately optimal rules are suggested in the linear regression case with a finite horizon,
where one wants to maximize ∑
i=1
N
w
i
f(θ, x
i
) with {w
i
} a weighting sequence. Various examples are presented, with a comparison with a Polya urn design and an up-and-down method
for a binary response problem. 相似文献
14.
Bart Soenens Maarten Vansteenkiste Luc Goossens Bart Duriez Christopher P. Niemiec 《Social Development》2008,17(3):661-681
This study investigated the associations among psychologically controlling parenting, relational aggression, friendship quality, and loneliness during adolescence. A model was proposed in which relational aggression plays an intervening role in the relations between both parental psychological control and friendship outcomes. In a sample comprised of middle adolescents and their parents, process analyses revealed that psychological control (indexed by parent and adolescent reports) positively predicted adolescents' self-reported relational aggression that, in turn, negatively predicted friendship quality and positively predicted loneliness. The model held for both mothers and fathers and was not moderated by adolescent gender. The discussion focuses on possible mechanisms explaining the relations among psychological control, relational aggression, and friendship outcomes. 相似文献
15.
Continuity and equity with infinite horizons 总被引:3,自引:3,他引:0
Luc Lauwers 《Social Choice and Welfare》1997,14(2):345-356
In an infinite dimensional space, e.g. the set of infinite utility streams, there is no natural topology and the content
of continuity is manipulable. Different desirable properties induce different topologies. We consider three properties: effectiveness.
l
1-summability and equity. In view of effectivity, the product topology is the most favourable one. The strict topology is the
largest topology for which all the continuous linear maps are l
1-summable. However, both topologies are myopic and conflict with the principle of equity. In case equity is desirable, the
sup topology comes forward.
Received: 15 April 1993 / Accepted: 22 April 1996 相似文献
16.
We consider a decision board with representatives who vote on proposals on behalf of their constituencies. We look for decision
rules that realize utilitarian and (welfarist) egalitarian ideals. We set up a simple model and obtain roughly the following
results. If the interests of people from the same constituency are uncorrelated, then a weighted rule with square root weights
does best in terms of both ideals. If there are perfect correlations, then the utilitarian ideal requires proportional weights,
whereas the egalitarian ideal requires equal weights. We investigate correlations that are in between these extremes and provide
analytic arguments to connect our results to Barberà and Jackson (J Polit Econ 114(2):317–339, 2006) and to Banzhaf voting
power. 相似文献
17.
Luc Devroye 《Revue canadienne de statistique》1989,17(2):235-239
Suppose we have n observations from X = Y + Z, where Z is a noise component with known distribution, and Y has an unknown density f. When the characteristic function of Z is nonzero almost everywhere, we show that it is possible to construct a density estimate fn such that for all f, Iimn| |=0. 相似文献
18.
One of the main results in topological social choice states the non-existence of a continuous, anonymous, and unanimous aggregation rule on spheres. This note provides a proof based upon simple methods such as integration. 相似文献
19.
Miranda Witvliet Tjeert Olthof Jan B. Hoeksma Frits A. Goossens Marieke S. I. Smits Hans M. Koot 《Social Development》2010,19(2):285-303
To understand children's peer group affiliation, this study examined to what extent children in naturally occurring groups resemble each other on bullying, likeability, and perceived popularity. Participants were fourth‐ to sixth‐grade pupils (N = 461). Peer groups were identified using the social cognitive map procedure. Resemblance on bullying, likeability, and perceived popularity was evaluated by means of variance components models. Resemblance in peer groups was strongest for perceived popularity, followed by bullying and likeability. Moreover, resemblance on bullying could for a large part be attributed to the high‐perceived popularity of the group, and to a lesser extent, to the low likeability of the group. It is concluded that children showing bullying seem to affiliate with each other most of all to attain or maintain their position in a perceived popular peer group. Results stress the importance of considering the functionality of bullying from a group perspective. 相似文献
20.
K. Alison Clarke-Stewart Frits A. Goossens & Virginia D. Allhusen 《Social Development》2001,10(2):143-169
The purpose of this study was to examine the validity of a new procedure for assessing infant-mother attachment. Sixty children (34 in child care) and their mothers were seen in the Strange Situation (SS) at 17 months and in a new attachment assessment, the California Attachment Procedure (CAP), which does not involve mother-child separations, at 18 months. Overall, children were more likely to be classified as secure in the CAP (83% vs. 67%), but this was particularly true for children with experience in routine nonmaternal care. Of the children in nonmaternal care who were insecure in the SS, 91% were secure in the CAP, whereas of the maternal-care children who were insecure in the SS, only 44% were secure in the CAP. Attachment security in the CAP was more highly correlated with observed maternal sensitivity than was attachment security in the SS, particularly for children in nonmaternal care. 相似文献