全文获取类型
收费全文 | 27851篇 |
免费 | 736篇 |
专业分类
管理学 | 3366篇 |
民族学 | 145篇 |
人才学 | 6篇 |
人口学 | 2500篇 |
丛书文集 | 163篇 |
教育普及 | 5篇 |
理论方法论 | 2546篇 |
现状及发展 | 1篇 |
综合类 | 336篇 |
社会学 | 14294篇 |
统计学 | 5225篇 |
出版年
2023年 | 142篇 |
2021年 | 147篇 |
2020年 | 403篇 |
2019年 | 622篇 |
2018年 | 651篇 |
2017年 | 920篇 |
2016年 | 651篇 |
2015年 | 503篇 |
2014年 | 633篇 |
2013年 | 5095篇 |
2012年 | 885篇 |
2011年 | 833篇 |
2010年 | 646篇 |
2009年 | 599篇 |
2008年 | 687篇 |
2007年 | 691篇 |
2006年 | 664篇 |
2005年 | 602篇 |
2004年 | 575篇 |
2003年 | 523篇 |
2002年 | 548篇 |
2001年 | 684篇 |
2000年 | 597篇 |
1999年 | 601篇 |
1998年 | 446篇 |
1997年 | 395篇 |
1996年 | 456篇 |
1995年 | 451篇 |
1994年 | 443篇 |
1993年 | 422篇 |
1992年 | 472篇 |
1991年 | 468篇 |
1990年 | 455篇 |
1989年 | 427篇 |
1988年 | 406篇 |
1987年 | 366篇 |
1986年 | 359篇 |
1985年 | 387篇 |
1984年 | 383篇 |
1983年 | 332篇 |
1982年 | 285篇 |
1981年 | 244篇 |
1980年 | 264篇 |
1979年 | 266篇 |
1978年 | 224篇 |
1977年 | 216篇 |
1976年 | 192篇 |
1975年 | 192篇 |
1974年 | 146篇 |
1973年 | 122篇 |
排序方式: 共有10000条查询结果,搜索用时 609 毫秒
911.
Sarah D. Holmes Elizabeth Galik Barbara Resnick 《Journal of Housing for the Elderly》2019,33(1):56-71
This study examined whether residents' level of resilience mediated the relationship between social support for exercise from staff and resident satisfaction in assisted living. This was a secondary data analysis using baseline data from a function-focused care intervention study including 171 residents from four assisted living facilities. Using structural equation modeling, we found that mood and social support for exercise from staff were the only variables associated with resilience. Mood, gender, cognition, and social support for exercise from staff directly influenced resident satisfaction and explained 31% of the variance in the model. Implications for future research and practice are discussed. 相似文献
912.
Alicia L. Nobles Brett A. Curtis Duc A. Ngo Emily Vardell 《Journal of American college health : J of ACH》2019,67(5):469-478
Objective: This study examines the health insurance literacy, or the ability to use health insurance effectively, of college students. Participants: A total of 455 students from a large, public university completed an online questionnaire in November 2016. Methods: A questionnaire examined students’ knowledge of commonly encountered health insurance terms and ability to apply that knowledge to determine cost-sharing in a clinical setting. Results: The majority of students were able to correctly identify the most commonly encountered terms, but could not identify terms related to plan types and options. Eighty-eight percent of students could not determine their cost-sharing for two presented scenarios. Approximately half of the students indicated they had been confused about their health insurance plan, with one-quarter of students stopping or delaying medical care due to confusion. Conclusions: Outreach and education for students should target specific deficits in knowledge such as those identified in this study. 相似文献
913.
Nancy Downs Tracy Alderman Savita Bhakta Tiffany A. Greenwood 《Journal of American college health : J of ACH》2019,67(1):27-31
Objective: To evaluate the demographics and clinical utilization patterns among college students during the initial 12 months of a novel, multi-disciplinary, collaborative, college mental health program (CMHP). Participants: Undergraduate and graduate students receiving treatment at the CMHP from Jan-Dec 2015. Methods: De-identified data was obtained via electronic health records for all students receiving care through the CMHP. Results: 1.2 FTE clinical providers treated 278 undergraduate and graduate students during the year (65.1% < age 26, 53.6% female, 49.6% caucasian). There were 1822 CMHP outpatient visits, 318 other medical visits and 103 total emergency room (ER)/inpatient visits. Ten students were identified as high utilizers of ER/inpatient services, while charges to the CMHP totaled $470,157 and total charges to the Health System were $2,378,315. Conclusions: Students with complex psychiatric/medical co-morbidities received cost effective, convenient and integrative treatment. Over time, we hope to intervene earlier and decrease ER/inpatient visits. 相似文献
914.
915.
Colleen M. Carr Sharlene A. Wolchik Jenn-Yun Tein Irwin Sandler 《Journal of divorce & remarriage》2019,60(3):194-210
This longitudinal study examined relations between mother–child relationship quality and father support in adolescence (ages 15–19) and emerging adults’ (ages 24–28) romantic anxiety and avoidance in a sample that experienced parental divorce in childhood (n = 72). A significant interactive effect of mother–adolescent relationship quality and father support on romantic anxiety occurred. High levels of father support protected emerging adults from the negative effects of a low quality mother–adolescent relationship. These results highlight the importance of examining effects of one parental relationship in the context of the other and the role that nonresidential fathers play in influencing their offspring’s romantic attachment. 相似文献
916.
Rachel M. Schmitz Kimberly A. Tyler Brandon Andrew Robinson 《Journal of gay & lesbian social services》2019,31(2):242-265
Understanding why socially marginalized individuals, such as lesbian, gay, bisexual, transgender and/or queer (LGBTQ+) people, participate in research can improve qualitative research designs, as well as social services and policies. In providing a participant-centered foundation, we interviewed 65 LGBTQ+ young adults and asked “Why are certain LGBTQ+ young adults motivated to engage in qualitative social science studies?” Many LGBTQ+ young people said they were committed to enacting social change and promoting advocacy. Participants also highlighted supporting scientific research and knowledge production. Finally, LGBTQ?+ participants engaged with research to introspectively analyze their identity development processes. These findings can facilitate access to socially vulnerable and underrepresented groups through a methodological focus on participant benefits. 相似文献
917.
918.
Gena A. Rowlands 《Journal of divorce & remarriage》2019,60(4):316-331
The Rowlands Parental Alienation Scale (RPAS) was administered to 592 parents along with measures of convergent and discriminant validity. The scale was designed to capture the eight domains of parental alienating behavior posited in the literature. Factor analysis extracted only six factors, one of which was not included in the original eight: (a) campaign of denigration towards the alienated parent, (b) the independent thinker phenomenon, (c) reflexive support, (d) presence of borrowed scenarios, (e) spread of animosity to extended family, and (f) lack of positive affect towards the alienated parent. Parents who reported either that a court evaluation or court findings had confirmed the presence of parental alienation scored significantly higher on all six RPAS factors as well as on the overall RPAS score. 相似文献
919.
Carlos F. Aylwin Carlos A. Toro Elizabeth Shirtcliff Alejandro Lomniczi 《Journal of research on adolescence》2019,29(1):54-79
The adolescent transition begins with the onset of puberty which, upstream in the brain, is initiated by the gonadotropin‐releasing hormone (GnRH) pulse generator that activates the release of peripheral sex hormones. Substantial research in human and animal models has revealed a myriad of cellular networks and heritable genes that control the GnRH pulse generator allowing the individual to begin the process of reproductive competence and sexual maturation. Here, we review the latest knowledge in neuroendocrine pubertal research with emphasis on genetic and epigenetic mechanisms underlying the pubertal transition. 相似文献
920.
Yazan A. Al-Ajlouni Su Hyun Park Eric W. Schrimshaw William C. Goedel 《Journal of gay & lesbian social services》2019,31(3):358-369
It has been demonstrated that sexual minority men (SMM) participate in sexting. While research has shown that engagement in the exchange of sexually explicit media is associated with poor health outcomes, no previous research has investigated its association with sleep health outcomes. This study sought to examine the association between sexually explicit media and sleep health among SMM, a population that suffers from poor sleep health. A popular geosocial networking application was used to recruit SMM individuals (N?=?580) in the Paris, France, metropolitan area. Multivariate analyses, adjusting for sociodemographics, were used to test the association between the frequency of sexually explicit messaging and three dimensions of sleep health: (1) sleep quality, (2) sleep duration, and (3) two aspects of sleep problems. In multivariate analyses, those who reported engaging in sexually explicit messaging more were more likely to report getting less than seven?hours of sleep (aRR = 1.24; 95% CI = 1.08, 1.43) compared with those who reported engaging in sexually explicit messaging less. No significant associations were found between sexting and sleep quality or reporting sleep problems. Sexually explicit messaging was associated with shorter sleep duration. Intervention targeted at individuals who sext could potentially improve sleep health outcomes. 相似文献