全文获取类型
收费全文 | 1316篇 |
免费 | 43篇 |
国内免费 | 2篇 |
专业分类
管理学 | 174篇 |
民族学 | 14篇 |
人口学 | 109篇 |
丛书文集 | 34篇 |
理论方法论 | 86篇 |
综合类 | 415篇 |
社会学 | 321篇 |
统计学 | 208篇 |
出版年
2023年 | 11篇 |
2022年 | 16篇 |
2021年 | 17篇 |
2020年 | 18篇 |
2019年 | 28篇 |
2018年 | 29篇 |
2017年 | 45篇 |
2016年 | 37篇 |
2015年 | 30篇 |
2014年 | 33篇 |
2013年 | 174篇 |
2012年 | 54篇 |
2011年 | 34篇 |
2010年 | 46篇 |
2009年 | 45篇 |
2008年 | 40篇 |
2007年 | 40篇 |
2006年 | 47篇 |
2005年 | 37篇 |
2004年 | 43篇 |
2003年 | 64篇 |
2002年 | 132篇 |
2001年 | 102篇 |
2000年 | 68篇 |
1999年 | 24篇 |
1998年 | 8篇 |
1997年 | 9篇 |
1996年 | 13篇 |
1995年 | 6篇 |
1994年 | 9篇 |
1993年 | 9篇 |
1992年 | 8篇 |
1991年 | 9篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 8篇 |
1986年 | 2篇 |
1985年 | 9篇 |
1984年 | 3篇 |
1983年 | 10篇 |
1982年 | 2篇 |
1980年 | 6篇 |
1978年 | 7篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1972年 | 1篇 |
1971年 | 2篇 |
1969年 | 2篇 |
1965年 | 2篇 |
排序方式: 共有1361条查询结果,搜索用时 15 毫秒
81.
We introduce two extreme methods to pairwisely compare ordered lists of the same length, viz. the comonotonic and the countermonotonic
comparison method, and show that these methods are, respectively, related to the copula T
M
(the minimum operator) and the Ł ukasiewicz copula T
L
used to join marginal cumulative distribution functions into bivariate cumulative distribution functions. Given a collection
of ordered lists of the same length, we generate by means of T
M
and T
L
two probabilistic relations Q
M
and Q
L
and identify their type of transitivity. Finally, it is shown that any probabilistic relation with rational elements on a
3-dimensional space of alternatives which possesses one of these types of transitivity, can be generated by three ordered
lists and at least one of the two extreme comparison methods. 相似文献
82.
This paper deals with models and methods for count data derived from observations on pairing phenomena. Pairs formed from “similar” members are excluded. Various models are considered and analyzed. Particular emphasis is on developing methods for testing whether particular pairs are prone to occur more or less often than expected by chance. 相似文献
83.
This paper considers the difficulties associated with evaluating the expected value of additional information when the outcomes of various decision alternatives may be correlated. Such correlation is explained in terms of dependence of outcomes on common exogenous factors and it is argued that decisions regarding what, if any, additional information to collect should take such dependencies into account. A model-based ‘fixed-parameter’ approach to evaluating EVPI in such a context is developed and compared to the traditional ‘fixed-correlation’ approach. The results suggest that different assumptions about the issue of correlation can produce different, sometimes contradictory, conclusions about the expected value of additional information and bence, should be explicitly stated as part of any pre-posterior analysis. A hybrid model encompassing both approaches and rooted in the theory of psychology of inference is then proposed and illustrated. 相似文献
84.
In this article we discuss some theoretical and methodological perspectives for studying children's neighbourhoods as a social‐pedagogical context. This social‐pedagogical perspective includes a focus in research on a reflective approach based on the acquisition of empirical indicators about the impact of the neighbourhood on children's socialisation. A research outline based on the idea of mapping children's neighbourhoods within their social and historical context is presented as one possible example of such an analysis. 相似文献
85.
Wim Verbeke Filiep Vanhonacker Lynn J. Frewer Isabelle Sioen Stefaan De Henauw John Van Camp 《Risk analysis》2008,28(4):951-967
Communicating about the health effects of fish and seafood may potentially result in a conflict situation: increasing intake is desirable because of health and nutritional benefits, but higher consumption may also lead to an increased intake of potentially harmful environmental contaminants. In order to anticipate the communication challenge this conflict may pose, the research presented here aimed to assess the impact of risk/benefit communication on Belgian consumers' fish consumption behavior and fish attribute perception. Data were collected in June 2005 from a sample of 381 women, aged between 20 and 50 years. An experimental design consisting of four message conditions (benefit‐only; risk‐only; benefit‐risk; and risk‐benefit) combined with three information sources (fish and food industry; consumer organization; government) was used. Exposure to the benefit‐only message resulted in an increase from a self‐reported fish consumption frequency of 4.2 times per month to an intended fish consumption frequency of 5.1 times per month (+21%), while fish attribute perceptions only marginally improved. The risk‐only message resulted in a strong negative perceptual change in the range of two points on a seven‐point scale. This translated into an 8% decrease of behavioral intention (from eating fish 4.5 times per month to an intention of eating fish 4.1 times per month). Balanced messages referring to both risks and benefits yielded no significant change in behavioral intention, despite a significant worsening of fish attribute perception. The presentation order of benefits and risks in the balanced message showed a tendency to affect both behavioral intention and attribute perception, with the first message component being most influential. Information source did not yield any significant impact either on behavioral intention or on attribute perceptions, independent of the message content. The results from this study provide valuable insights for future risk/benefit and balanced communication about seafood. 相似文献
86.
Semiparametric Bayesian classification with longitudinal markers 总被引:1,自引:0,他引:1
Rolando De la Cruz-Mesía Fernando A. Quintana Peter Müller 《Journal of the Royal Statistical Society. Series C, Applied statistics》2007,56(2):119-137
Summary. We analyse data from a study involving 173 pregnant women. The data are observed values of the β human chorionic gonadotropin hormone measured during the first 80 days of gestational age, including from one up to six longitudinal responses for each woman. The main objective in this study is to predict normal versus abnormal pregnancy outcomes from data that are available at the early stages of pregnancy. We achieve the desired classification with a semiparametric hierarchical model. Specifically, we consider a Dirichlet process mixture prior for the distribution of the random effects in each group. The unknown random-effects distributions are allowed to vary across groups but are made dependent by using a design vector to select different features of a single underlying random probability measure. The resulting model is an extension of the dependent Dirichlet process model, with an additional probability model for group classification. The model is shown to perform better than an alternative model which is based on independent Dirichlet processes for the groups. Relevant posterior distributions are summarized by using Markov chain Monte Carlo methods. 相似文献
87.
从上世纪30年代以来,会计信息价值相关性一直是西方学术界致力研究的重大课题.国外的研究表明,要发展和完善资本市场,必须充分发挥会计信息的作用,同时也必须加强会计信息价值相关性水平的经验研究.近几年,尽管已有专家、学者对我国资本市场会计信息质量进行了研究,但总体上讲,尚缺乏系统性、全面性.另外,在引荐和借鉴西方比较成熟的证券市场理论和研究方法方面也存在着一定的"滞后"现象.这将不利于我国资本市场的长期发展和会计信息质量的提高.因此,本文按西方会计信息价值相关性的经验研究成果为主线索,对其理论发展进行系统性回顾,希望这些研究成果对我国会计信息价值相关性研究的发展有所帮助.同时,就促进我国会计信息价值相关性研究提出了一些政策建议. 相似文献
88.
Jenny De Jong Gierveld 《Journal of marriage and the family》2004,66(1):236-243
Substantial proportions of people enter into new partner relationships after bereavement or divorce. Nowadays in Europe, unmarried cohabitation and living‐apart‐together relationships are frequently opted for at repartnering. Drawing on the Netherlands’ Living Arrangements and Social Networks survey of men and women aged 55 to 89 years (N = 4,494), this article explicates the determinants that lead widowed or divorced people to enter into old and new types of partner relationships. Cox proportional hazard regression analyses revealed that age at most recent union dissolution, the number of partner dissolutions, working during and after the most recent union dissolution, and other demographic variables are important in weighing the pros and cons of different types of living arrangements. 相似文献
89.
Growing recognition of male sexual abuse and its potentially debilitating effects has underscored the need to develop effective treatment interventions for this population. The present study describes an individual treatment programme that was developed for adult males who have experienced childhood sexual abuse. The treatment programme focused on three areas related to sexual abuse, specifically feelings of self‐blame, anger and anxiety. The study also presents preliminary findings on treatment effects, using self‐report measures that five participants completed prior to treatment and at various assessments following treatment termination. Overall findings indicated improvements in behavioural self‐blame, anger, state anxiety and trait anxiety. Treatment did not appear to have an effect on characterological self‐blame over the long term. The study's findings are limited by the reliance on self‐report data and the absence of a comparison group. As such, our findings should be viewed as an initial contribution to the currently limited empirical data on treatment effects for sexually abused adult males. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
90.
Frank Van Holen Johan Vanderfaeillie Femke Vanschoonlandt Skrällan De Maeyer Tim Stroobants 《European Journal of Social Work》2015,18(1):97-113
Family supporting foster care (FSFC) is a directly accessible, short-term and preventive form of foster care for children under the age of 12. Caregivers in this type of foster care need comprehensive support to deal with their complex tasks. In this contribution, the support needs arising from the behaviour of the foster child as well as concerning dealing with the biological parents of 85 Flemish FSFC-parents are examined, as these are areas FSFC-parents specifically ask support for. These support needs are evaluated for possible links with child and foster parent characteristics. More experienced foster parents and foster parents with a foster child showing more externalising problem behaviour ask for more support in managing the child's behaviour. 相似文献