全文获取类型
收费全文 | 2272篇 |
免费 | 114篇 |
专业分类
管理学 | 306篇 |
民族学 | 18篇 |
人口学 | 225篇 |
丛书文集 | 19篇 |
理论方法论 | 213篇 |
综合类 | 134篇 |
社会学 | 1211篇 |
统计学 | 260篇 |
出版年
2023年 | 31篇 |
2022年 | 18篇 |
2021年 | 24篇 |
2020年 | 76篇 |
2019年 | 94篇 |
2018年 | 107篇 |
2017年 | 154篇 |
2016年 | 111篇 |
2015年 | 65篇 |
2014年 | 96篇 |
2013年 | 317篇 |
2012年 | 239篇 |
2011年 | 105篇 |
2010年 | 83篇 |
2009年 | 61篇 |
2008年 | 66篇 |
2007年 | 70篇 |
2006年 | 59篇 |
2005年 | 60篇 |
2004年 | 105篇 |
2003年 | 100篇 |
2002年 | 74篇 |
2001年 | 49篇 |
2000年 | 36篇 |
1999年 | 12篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 15篇 |
1995年 | 5篇 |
1994年 | 13篇 |
1993年 | 6篇 |
1992年 | 15篇 |
1991年 | 10篇 |
1990年 | 8篇 |
1989年 | 9篇 |
1988年 | 6篇 |
1987年 | 8篇 |
1985年 | 3篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1981年 | 7篇 |
1980年 | 7篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1975年 | 2篇 |
1974年 | 5篇 |
1970年 | 2篇 |
1967年 | 2篇 |
1966年 | 2篇 |
排序方式: 共有2386条查询结果,搜索用时 31 毫秒
1.
de Jong Petra W. Caarls Kim de Valk Helga A. G. 《Population research and policy review》2022,41(2):671-694
Population Research and Policy Review - The welfare state can be perceived as a safety net which helps individuals adjust to situations of risk or transition. Starting from this idea of the welfare... 相似文献
2.
Melissa J. Hodges 《Sociological Forum》2020,35(1):24-49
As U.S. manufacturing and production industries have declined, the growth of the care sector has increasingly become an important source of jobs for workers without a college degree. Often requiring some form of postsecondary credentialing, many care occupations can provide better wages, job stability, and possible upward mobility for less educated workers. However, employment patterns in paid care work are both gendered and racialized: women and workers of color are overrepresented in care occupations with fewer entry barriers, benefits, and lower pay. Although these patterns are well documented, the mechanisms producing them are less well understood. Using event history analysis and the National Longitudinal Survey of Youth (NLSY79), this study evaluates the explanatory power of neoclassical economic, status attainment, and social closure theories of occupational segregation for black women’s and men’s greater hazard or “risk” of entering care occupations, relative to white workers. Net of individual and closure mechanisms, significant residual effects suggest labor market discrimination remains a primary explanation for the over-representation of black workers in less credentialed care jobs with fewer benefits. 相似文献
3.
Mathews Melissa A. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2020,31(1):201-212
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - This study examined how board chairs and executive directors of nonprofit civic engagement organizations interpreted their... 相似文献
4.
5.
Christopher T. Belser Diandra J. Prescod Andrew P. Daire Melissa A. Dagley Cynthia Y. Young 《The Career development quarterly》2018,66(2):176-181
Undergraduate career planning courses have shown efficacy in decreasing students’ negative career thoughts; however, universities have minimally applied these courses to science, technology, engineering, and math (STEM) populations. This study compared the influence of a STEM‐focused career planning course for undecided STEM students with a seminar course for decided STEM majors. An analysis of covariance with covariate adjustment revealed that undecided career planning students had lower adjusted mean scores on a measure of negative career thinking than the decided STEM majors after the first semester of college. The results provide support for the efficacy of STEM‐focused career planning courses and measuring negative career thoughts with STEM undergraduates. 相似文献
6.
Joaquín Castillo de Mesa María de las Olas Palma García Luis Gómez Jacinto 《European Journal of Social Work》2018,21(6):902-915
ABSTRACTSocial network services are allowing more social connectivity and making possible sharing information and knowledge of a different nature. This article analyses if social workers related to active social policies from Malaga province (Spain) are using social network services to share information and knowledge and if there is a mirror between online and offline relationships. Since it is an experimental model, through virtual ethnography and through social network analysis methodology, we observed the presence, connectivity and analysed the structure of relationships that keep 235 professionals from 52 organizations in Facebook®. Moreover, the model uses the statistical technique of modularity for detecting online communities, which are compared with distribution of professionals in their organizations. Results show how social network services applied to social intervention are massively and frequently used by professionals. On the other hand, the detected communities reflect existence of analogy between online and offline relationships. The online structure shows a high degree of cohesion and how certain professionals have higher capacity of influence and diffusion depending on position in the online structure. It argues about the opportunity to incorporate social network services towards social intervention as a manner of social innovation to improve cooperation and diffusion of information and knowledge. 相似文献
7.
Landscape urbanization threatens plant phylogenetic diversity in the Brazilian Atlantic Forest 总被引:1,自引:0,他引:1
Valdecir Silva-Junior Danielle G. Souza Rubens T. Queiroz Luiz G. R. Souza Elâine M. S. Ribeiro Bráulio A. Santos 《Urban Ecosystems》2018,21(4):625-634
Urbanization causes species loss around the world, but its effects on phylogenetic diversity are poorly known in tropical forests. Using a patch-landscape approach in an urbanizing region of the Brazilian Atlantic Forest, we tested whether the increase in landscape urbanization reduces plant species density, phylogenetic richness and divergence, and increases the relatedness among co-occurring individuals and species. We assessed plant responses to urbanization in adult (diameter at breast height?>?10 cm) and sapling communities (2.5–10 cm diameter) separately, as saplings are proxies of the future flora. We sampled 2860 woody plants belonging to 155 species in nine circular landscapes with urbanization level varying from 0% to 45%, and estimated the relatedness among the species that have increased and decreased in relative abundance in more urbanized landscapes (winner and losers, respectively). As expected, species density and phylogenetic richness decreased with the increase in urbanization. These responses were consistent for adult and sapling communities, suggesting a persistent loss of species and lineages in more urbanized landscapes. Contrary to our expectations, phylogenetic divergence and structure did not respond to urbanization, indicating that the more urbanized landscapes still retain much evolutionary history. However, because the relatedness among winners was greater than among losers, it is likely that the phylogenetic divergence gradually reduces and the relatedness increases, resulting in impoverished forests with uncertain ability to provide ecosystem services such as carbon storage and pest control. This environmental cost should be taken into account to align urban sprawl with biodiversity conservation. 相似文献
8.
9.
10.
Melissa de Carvalho Souza Vieira Alice Erwig Leitão Guilherme Vieira Jéssica Moratelli Leonessa Boing Taysi Seemann 《The aging male》2018,21(3):149-157
Background: The androgen deficiency in the aging male (ADAM) affects physical, sexual, and psychological aspects with characteristics symptoms of middle-aged men. The practice of regular physical activity and physical exercise can attenuate these symptoms. The aim of this randomized clinical trial is to propose a physical exercise protocol based on concurrent training for middle-aged men with ADAM.Method: Randomized clinical trial with a 6-month intervention will randomly divided into two groups: experimental group (EG) and control group (CG). Four evaluations will be carried out, (1) pre-intervention; (2) in the first month of intervention; (3) in the third month of intervention; (4) post-intervention, evaluating: physical, psychological, sexual, and hormonal aspects. The intervention protocol with concurrent training will have duration of 6 months; frequency of 3 times weekly, with 60?min per session. The two-way ANOVA test will be used for the inter-group and intra-group comparisons with repeated measurements, and also Sydak’s comparison test.Conclusion: This protocol was developed with the intent of easing the symptoms of ADAM. In addition, it is believed that the concurrent training protocol could be capable to recover hormonal, physical, psychological, and sexual aspect of middle-aged men with ADAM. 相似文献