全文获取类型
收费全文 | 2366篇 |
免费 | 117篇 |
专业分类
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 |
出版年
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.
Rafael Muñoz de Bustillo Pablo de Pedraza José Ignacio Antón Luis Alberto Rivas 《International social security review》2011,64(1):73-93
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.
Chelsea D. Williams Jelaina Shipman-Lacewell Shu-Fang Shih Alexandra Wynn María de Jesús Elias Cecelia R. Valrie 《Journal of research on adolescence》2023,33(4):1295-1303
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.
Sara Ribeiro de Faria Susana Pedras Richard Inman Joana Correia Lopes Paulo A. S. Moreira 《Journal of research on adolescence》2023,33(3):973-985
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.
Scott Huberty Christian O’Reilly Virginia Carter Leno Mandy Steiman Sara Webb Mayada Elsabbagh The BASIS Team 《Infancy》2023,28(4):754-770
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.
Joana Soares Sara Ralha Sílvia Monteiro Fonseca Joana Prego Maria A. Barbosa-Ducharne 《Child & Family Social Work》2023,28(3):753-763
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