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   2366篇
  免费   117篇
管理学   359篇
民族学   20篇
人口学   291篇
丛书文集   23篇
理论方法论   224篇
综合类   135篇
社会学   1167篇
统计学   264篇
  2024年   5篇
  2023年   29篇
  2022年   27篇
  2021年   34篇
  2020年   68篇
  2019年   98篇
  2018年   111篇
  2017年   152篇
  2016年   101篇
  2015年   84篇
  2014年   103篇
  2013年   303篇
  2012年   230篇
  2011年   124篇
  2010年   68篇
  2009年   72篇
  2008年   70篇
  2007年   76篇
  2006年   58篇
  2005年   57篇
  2004年   104篇
  2003年   99篇
  2002年   80篇
  2001年   52篇
  2000年   38篇
  1999年   19篇
  1998年   11篇
  1997年   11篇
  1996年   17篇
  1995年   12篇
  1994年   9篇
  1993年   10篇
  1992年   15篇
  1991年   14篇
  1990年   13篇
  1989年   11篇
  1988年   7篇
  1987年   9篇
  1985年   9篇
  1984年   7篇
  1983年   6篇
  1982年   7篇
  1981年   7篇
  1980年   6篇
  1979年   3篇
  1978年   6篇
  1977年   3篇
  1976年   3篇
  1975年   3篇
  1974年   4篇
排序方式: 共有2483条查询结果,搜索用时 31 毫秒
931.
This article reports results of an experiment designed to analyze the link between risky decisions made by couples and risky decisions made separately by each spouse. We estimate both the spouses and the couples’ degrees of risk aversion, we assess how the risk preferences of the two spouses aggregate when they make risky decisions, and we shed light on the dynamics of the decision process that takes place when couples make risky decisions. We find that, far from being fixed, the balance of power within the household is malleable. In most couples, men have, initially, more decision-making power than women but women who ultimately implement the joint decisions gain more and more power over the course of decision making.  相似文献   
932.
This article aims to offer an ex ante evaluation of the impact of a parametric reform of the Spanish pension system that would involve increasing the reference period used to calculate benefits, an approach proposed many times by various actors in the socio‐economic field. Such gradual change may be categorized as a non‐structural reform of the pension system. This contrasts with reforms of a structural nature that have been very popular in Latin America and elsewhere, involving the creation of defined contribution individual account schemes. As regards the parametric reform proposed in this article, the main findings indicate that it would have a small but negative impact on pension income for pensioners and would reduce income distribution.  相似文献   
933.
The Western welfare states are under reform. An important part of these reforms is the introduction of market type mechanisms for the deliverance of public services. Over the years, many countries have chosen to contract out employment reintegration services. The underlying notion of contracting out is the belief that the introduction of market elements in the production of public services increases effectiveness and efficiency. In addition to the cost benefit argument for contracting out public services, ideology is often brought forward as an important factor explaining why public services are provided in‐house. In this article, we analyze to what extent cost benefit arguments and ideology affect the make or buy decision of Dutch municipalities. The Dutch employment reintegration market poses an interesting case in point since Dutch municipalities have the option to either provide employment reintegration services themselves or to buy services on the market. Our analysis shows that cost benefit arguments do not play a role in the make or buy decision of Dutch municipalities. Ideology, however, does. Municipalities that adhere to the principles of New Public Management more often opt to buy employment reintegration services on the market. Also the outcomes of municipal elections have been found to be of importance – left‐wing municipalities more often choose in‐house service provision.  相似文献   
934.
The purpose of this paper is to develop a Bayesian analysis for the right-censored survival data when immune or cured individuals may be present in the population from which the data is taken. In our approach the number of competing causes of the event of interest follows the Conway–Maxwell–Poisson distribution which generalizes the Poisson distribution. Markov chain Monte Carlo (MCMC) methods are used to develop a Bayesian procedure for the proposed model. Also, some discussions on the model selection and an illustration with a real data set are considered.  相似文献   
935.
936.
937.
The current study examined associations between Black adolescents' (Mage = 15.55, SD = 1.23) racial discrimination and suicide behaviors (i.e., suicide ideation, suicide plan, and suicide attempts), and whether perceived school safety was a protective moderator. Furthermore, we tested gender differences in relations, which were not significant. Racial discrimination predicted greater suicide behaviors, and school safety informed less suicide behaviors. School safety moderated the relation between discrimination and suicide plan, such that at low school safety, discrimination predicted having a suicide plan but was not significant at high school safety. Furthermore, school safety moderated the relation between discrimination and suicide attempts. At low school safety, discrimination predicted more suicide attempts, but was not significant at high school safety.  相似文献   
938.
The present study overcomes the limited empirical evidence on the association between well-being and school engagement in times of adversity by exploiting available data from two large and comparable samples of eighth graders; one obtained prior to the COVID-19 pandemic and the second obtained during the pandemic. Results suggest that adolescents were less engaged with their learning context during the pandemic, as well as lower in positive and negative affect, but slightly more satisfied with life. Through SEM we found a stronger positive association between positive affect and school engagement in the COVID-19 group compared with the pre-COVID-19 group. This finding highlights the important role of positive affect in supporting better academic functioning in the aftermath of a global crisis.  相似文献   
939.
Understanding the neural processes underpinning individual differences in early language development is of increasing interest, as it is known to vary in typical development and to be quite heterogeneous in neurodevelopmental conditions. However, few studies to date have tested whether early brain measures are indicative of the developmental trajectory of language, as opposed to language outcomes at specific ages. We combined recordings from two longitudinal studies, including typically developing infants without a family history of autism, and infants with increased likelihood of developing autism (infant-siblings) (N = 191). Electroencephalograms (EEG) were recorded at 6 months, and behavioral assessments at 6, 12, 18, 24 and 36 months of age. Using a growth curve model, we tested whether absolute EEG spectral power at 6 months was associated with concurrent language abilities, and developmental change in language between 6 and 36 months. We found evidence of an association between 6-month alpha-band power and concurrent, but not developmental change in, expressive language ability in both infant-siblings and control infants. The observed association between 6-month alpha-band power and 6-month expressive language was not moderated by group status, suggesting some continuity in neural mechanisms.  相似文献   
940.
There are several motives underlying the process of deciding to become an adoptive family. However, research exploring this issue is scarce and essentially focused on infertility as the main motivation. The present mixed-method study aims to fill in this gap by exploring, retrospectively, the motives to adopt of 126 Portuguese adoptive parents. The Parents' Interview on the Adoption Process was used to identify the motives to adopt and describe the adoption decision-making process. Seven main motives (biological issues, filling in a void/loneliness, adoption as a life project, expanding the family, philanthropy, contact with the child protection system and parenthood) were identified. These motives can be centred on the self, the child or both simultaneously and are characterized by dynamism, permeability and interconnection. Findings allowed for establishing conceptual considerations on motivations to adopt and recommendations for adoption practice.  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