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   7972篇
  免费   1070篇
  国内免费   72篇
管理学   1118篇
民族学   46篇
人才学   1篇
人口学   70篇
丛书文集   627篇
理论方法论   995篇
综合类   3455篇
社会学   1792篇
统计学   1010篇
  2024年   8篇
  2023年   23篇
  2022年   23篇
  2021年   124篇
  2020年   208篇
  2019年   371篇
  2018年   251篇
  2017年   403篇
  2016年   394篇
  2015年   417篇
  2014年   550篇
  2013年   738篇
  2012年   649篇
  2011年   568篇
  2010年   556篇
  2009年   520篇
  2008年   488篇
  2007年   441篇
  2006年   445篇
  2005年   371篇
  2004年   367篇
  2003年   331篇
  2002年   326篇
  2001年   281篇
  2000年   182篇
  1999年   31篇
  1998年   12篇
  1997年   10篇
  1996年   9篇
  1995年   4篇
  1994年   7篇
  1993年   2篇
  1992年   1篇
  1989年   1篇
  1988年   2篇
排序方式: 共有9114条查询结果,搜索用时 90 毫秒
211.
The purpose of this study was to examine the effectiveness of an employment‐oriented welfare state. While previous studies have focused on employment growth, this study considers the quality of employment, especially its mediating impact between public social expenditure and fiscal soundness. Three‐step mediated regression analysis was conducted on a data sample from 19 developed countries from 1991 to 2013. The results show that while public social expenditure negatively affects fiscal soundness, if it promotes total and part‐time employment, it can positively affect fiscal soundness. However, when the incidence of involuntary part‐time employment is high, public social expenditure and its impact on employment performance no longer guarantee fiscal soundness. This study addresses the importance of promoting not only employment growth but also employment quality to secure fiscal soundness.  相似文献   
212.
The transition from primary to secondary school challenges children's psychological well‐being. A cross‐transitional longitudinal study (N = 306; mean age = 12.2 years) examined why some children's self‐esteem decreases across the transition whereas other children's self‐esteem does not. Children's expected social acceptance in secondary school was measured before the transition; their actually perceived social acceptance was measured after the transition. Self‐esteem and Big Five personality traits were measured both pre‐ and posttransition. Self‐esteem changed as a function of the discrepancy between children's expected and actually perceived social acceptance. Furthermore, neuroticism magnified self‐esteem decreases when children's ‘hopes were dashed'—when they experienced disappointing levels of social acceptance. These findings provide longitudinal support for sociometer theory across the critical transition to secondary school.  相似文献   
213.
Parenting programmes are widely used in the UK, promoted in policy documents as a cost‐effective way for children's services to address behaviour problems and thereby the longer‐term costs associated with conduct disorders, particularly antisocial behaviour and criminality. To explore whether these programmes are a cost‐effective component of family intervention, this paper examines evidence from cost‐effectiveness studies based on randomized controlled trials, modelling studies estimating longer‐term costs and outcomes, and studies estimating costs of UK parenting programmes, including evidence from routine practice. Findings indicate that parenting programmes have the potential to be cost‐saving in the long term; however, gaps in the evidence include: lack of follow‐up of families who drop out of programmes, absence of control groups in longer‐term follow‐ups, and little information about costs and effects of programmes in routine practice. The size of savings resulting from implementation of effective parenting programmes will depend on the extent to which families likely to be most costly to society attend and experience lasting benefit.  相似文献   
214.
A methodology is suggested for the estimation of the mass density and the cumulative ground deposition of a nonvolatile, nonneutrally buoyant, air pollutant (liquid or solid) released from a polluted column (following an explosion caused during routine operation in, e.g., the chemical industry or due to any kind of hostile act) and deposited on the ground via gravitational settling. In many cases, the deposited mass due to gravitational settling constitutes a significant fraction of the original inventory released from the source. Implementation of the methodology in preliminary risk assessments can serve as an efficient tool for emergency planning for both immediate and long‐term measures such as evacuation and decontamination. The methodology considers, inter alia, an estimation of the critical particle diameter, particle size, and mass distributions along the polluted column. This methodology was developed to apply in rural regions since proper application of relevant meteorological input data can be accomplished mainly for such areas.  相似文献   
215.
In this study, we explore narratives in relation to ‘fatness’, drawing on focus group interviews with parents, early years practitioners, teachers and young people. The study is located in a larger study on bullying and resilience, with no specific focus on obesity or ‘fatness’. Analysis of the interview data highlighted a recurrent focus on ‘fatness’ within the participants’ narratives, by labelling and stigmatising the ‘fat kid’ and ‘bigger children’. We conclude that obesity and fatness, as abnormalities, are now included in commonsense talk in relation to ‘easy targets’, victims and bullies.  相似文献   
216.
陈丛兰 《唐都学刊》2012,28(4):23-27
《贞观政要》继承和发展了儒学政治哲学的人性理论。其官德保障机制体现在内修与外治两个方面,一则从非制度的内在层面强调官吏通过思、慎和学的途径修身养德,二则从制度的外在层面加强旨在预防、考课与奖惩官员的吏治建设。体现自律与他律、儒学政治哲学与法家政治理念的统一,完善了中国传统政治外儒内法的基本模式。  相似文献   
217.
In many clinical trials, biological, pharmacological, or clinical information is used to define candidate subgroups of patients that might have a differential treatment effect. Once the trial results are available, interest will focus on subgroups with an increased treatment effect. Estimating a treatment effect for these groups, together with an adequate uncertainty statement is challenging, owing to the resulting “random high” / selection bias. In this paper, we will investigate Bayesian model averaging to address this problem. The general motivation for the use of model averaging is to realize that subgroup selection can be viewed as model selection, so that methods to deal with model selection uncertainty, such as model averaging, can be used also in this setting. Simulations are used to evaluate the performance of the proposed approach. We illustrate it on an example early‐phase clinical trial.  相似文献   
218.
This article considers the cases for and against ‘open access’ regulation of rail and port logistics infrastructure used by ‘bulk’ mining operations, arguing that host governments should proactively impose and then enforce such regulation in almost all cases. The logistics infrastructure needed for this type of mining activity is of critical importance. The costs and potential inefficiencies involved in duplicating such infrastructure confer a significant competitive advantage on its owner in the absence of effective access regulation. In particular, where a first mover develops an ‘integrated’ project incorporating a mine and associated infrastructure, a failure to impose access regulation discourages third‐party investment in mineral exploration and development in the region serviced by the infrastructure, due to the risk of hold‐up by the first mover. An unregulated first mover can also use its infrastructure advantage to capture the state's share of resource rents from the mineral endowment of the region. Open access regulation further benefits host countries by enabling broad‐based economic development through the shared‐use of mining infrastructure with other sectors (e.g., agribusiness). The article highlights contrasting experience with access regulation in Australia: the Pilbara iron ore region has seen protracted disputes involving mining firms and policy‐makers and very few examples of third‐party access, while in the coal region of central Queensland an extensive multi‐user, multi‐purpose railway network operates independently of mining firms. The authors urge governments in sub‐Saharan Africa (in particular) not to underestimate the internal capacity and other challenges associated with developing and enforcing open access regulation of mining infrastructure in a manner that protects their national interests.  相似文献   
219.
幸福家庭是家庭发展的高级阶段,是家庭成员一生的共同追求。本文立足于幸福学理论,探讨发展性、多元化的家庭幸福观,并从转变幸福观念、引导家庭成员挖掘幸福资源、提升家庭成员的主观幸福感、寻找幸福家庭的支点、构建家庭共同体等核心环节入手,提出幸福家庭建设的具体对策,以提高家庭成员的幸福感,改善家庭成员的内部矛盾,在一定程度上为建设幸福家庭这一影响经济发展和社会稳定的民生大计提供决策参考。  相似文献   
220.
The current study examined associations between mothers’ behavioral profiles during mother‐child conflict interactions and their children's social skills. This person‐centered approach classified 181 mothers according to their levels of emotional responsiveness, intrusiveness, negativity, and engagement facilitation behaviors during an eight‐minute conflict discussion task with their child. Three distinct classes of mothers were identified using latent profile analysis: sensitive/engaged, moderately sensitive/engaged, and insensitive/disengaged. An analysis of covariance indicated that children of mothers in the sensitive/engaged group had significantly higher social skills than children of mothers in the moderately sensitive/engaged and insensitive/disengaged groups. Results suggest that mother‐child conflict interactions may benefit children's social development when mothers facilitate their children's participation in a highly sensitive manner.  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