全文获取类型
收费全文 | 8246篇 |
免费 | 132篇 |
国内免费 | 2篇 |
专业分类
管理学 | 1273篇 |
民族学 | 28篇 |
人口学 | 728篇 |
丛书文集 | 24篇 |
理论方法论 | 732篇 |
综合类 | 96篇 |
社会学 | 4195篇 |
统计学 | 1304篇 |
出版年
2020年 | 96篇 |
2019年 | 125篇 |
2018年 | 153篇 |
2017年 | 190篇 |
2016年 | 168篇 |
2015年 | 120篇 |
2014年 | 163篇 |
2013年 | 1388篇 |
2012年 | 192篇 |
2011年 | 220篇 |
2010年 | 171篇 |
2009年 | 153篇 |
2008年 | 200篇 |
2007年 | 195篇 |
2006年 | 210篇 |
2005年 | 197篇 |
2004年 | 165篇 |
2003年 | 135篇 |
2002年 | 166篇 |
2001年 | 172篇 |
2000年 | 183篇 |
1999年 | 151篇 |
1998年 | 149篇 |
1997年 | 131篇 |
1996年 | 133篇 |
1995年 | 131篇 |
1994年 | 145篇 |
1993年 | 135篇 |
1992年 | 145篇 |
1991年 | 163篇 |
1990年 | 174篇 |
1989年 | 143篇 |
1988年 | 161篇 |
1987年 | 142篇 |
1986年 | 137篇 |
1985年 | 139篇 |
1984年 | 147篇 |
1983年 | 135篇 |
1982年 | 97篇 |
1981年 | 80篇 |
1980年 | 88篇 |
1979年 | 114篇 |
1978年 | 90篇 |
1977年 | 70篇 |
1976年 | 81篇 |
1975年 | 52篇 |
1974年 | 75篇 |
1973年 | 53篇 |
1971年 | 44篇 |
1970年 | 44篇 |
排序方式: 共有8380条查询结果,搜索用时 8 毫秒
751.
Anne Rossier Markus Shannon Krohe Nicole Garro Maya Gerstein Cynthia Pellegrini 《Journal of Children and Poverty》2017,23(1):79-94
Reducing the number of preterm births is a high public health priority in the U.S. Preterm birth, affecting an estimated 380,000 infants annually, is a leading cause of infant mortality and morbidity and is associated with individual and systemic characteristics. Preterm birth is estimated to cost society $26 billion annually. Despite an elevated financial burden caused by preterm birth, very little is known about who bears these costs. This study seeks to understand the relationship between Medicaid and private insurance payment for preterm birth, using multiple years of vital statistics data, which for the first time since 2010 include information on payment source. The nationwide data cover births that occur in all settings, including non-hospital settings, and many maternal characteristics not available in other datasets, improving upon previous analyses. These data can be used to promote better Medicaid coverage of interventions known to be effective in reducing preterm births. 相似文献
752.
David M. Ledgerwood Cynthia L. Arfken Michigan Association on Problem Gambling 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2017,33(4):1263-1275
Most treatment for gambling disorder is provided on an outpatient basis. Only a small number of jurisdictions in North America provide higher levels of gambling treatment, such as residential or intensive outpatient (IOP) care, despite the potential need for these services. Further, there appear to be few guidelines for determining appropriate level of gambling treatment. The aim of the present study was to assess the appropriateness of higher levels of problem gambling care among clients receiving outpatient treatment. Problem gamblers and their therapists independently completed questionnaires that assessed the need and desire for residential and IOP treatment. About 42% of problem gambling outpatients noted that they would be “probably” or “definitely” willing to attend residential treatment, and about half indicated they would be equally likely to attend IOP. Therapists recommended about a third of their clients as appropriate for higher levels of care. For both client and therapist assessments, there was a significant association between desire or recommendation for level of treatment and severity of gambling and co-occurring problems. Further, therapist recommendations for level of care were significantly associated with client willingness to attend higher levels of treatment. Our data reveal the potential need for higher levels of care for problem gambling, as evaluated by clients and their therapists. Policy implications for the funding of residential and IOP treatment are discussed. 相似文献
753.
Adam C. Jones W. David Robinson Ryan B. Seedall 《Journal of marital and family therapy》2018,44(4):606-623
In a study of 142 couples, we gathered survey data to show how sexual communication influences sexual and relationship satisfaction as well as sexual and orgasm frequency. In two dyadic data path analyses, we observed the significant paths of influence that sexual communication has on sexual and relationship satisfaction, as well as sexual and orgasm frequency. Our findings revealed greater amounts of sexual communication were associated with increased orgasm frequency in women and greater relationship and sexual satisfaction in both sexes. We also observed important differences in the associations of sexual communication and general communication on satisfaction levels. With these analyses, we expand the current literature to broaden our understanding of the role that sexual communication plays in committed relationships. 相似文献
754.
Journal of Risk and Uncertainty - 相似文献
755.
Use of a conceptual model of societal drivers of ecological change in South Florida: Implications of an ecosystem management scenario 总被引:3,自引:0,他引:3
Harwell Christine C. Deren Christopher W. Snyder George H. Solecki William D. Wilson James Harwell Mark A. 《Urban Ecosystems》1999,3(3-4):345-368
Human-dominated ecosystems such as in South Florida's Everglades region are greatly affected by societal actions and choices, and efforts to restore degraded ecosystems must take into account the societal drivers of ecosystem change. A conceptual model of societal-ecological interactions within the region illustrates connections between major societal drivers, such as water management and land use, and ecological stressors, such as loss of habitat and nutrient loading. Using the conceptual model as an initial guide for discussion, examination of a restoration scenario for the region shows that social and economic effects from activities proposed in a restoration scenario will likely affect most sectors of South Florida. Political effects from changing land and water management practices likely will be significant, as will the physical effects of changing water structures and management practices. Conceptual models such as this can aid in the initial stages of ecosystem restoration discussions and can assist in planning for subsequent social science evaluations of specific societal impacts of actual proposed governmental restoration alternatives. In crafting restoration scenarios, local, regional, and national decision makers can use conceptual models such as this to help broaden the early considerations of how possible future changes in societal drivers, including management choices, will change ecological stressors that affect ecosystem health. 相似文献
756.
Stephen M. Gavazzi Patrick C. McKenry Jill A. Jacobson Teresa W. Julian Brenda Lohman 《Journal of marriage and the family》2000,62(3):669-682
Previous research has linked expressed emotion (EE) levels and psychiatric symptomology, whereas other empirical efforts have examined the relationship between EE and marital relationship variables. Still other research has linked psychological conditions with acts of aggression, and the impact of marital issues within this domain of inquiry also has been explored. The study presented here examined the combined effects of EE, marital quality, and psychiatric symptomology on displays of verbal aggression by both relationship partners. Both husbands' and wives' reports of marital quality were predictive of both husbands' and wives' verbal aggression levels; here, reports of lower marital quality were associated with higher levels of verbal aggression. Additionally, husbands' and wives' reports of psychological symptomology in self and partner were important paths to marital quality, as were husbands' and wives' reports of EE levels. Further, some evidence was generated that supports the mediating role of marital quality with regard to EE and psychological symptomology. However, the overall fit indices of the models tested in this empirical effort were modest. Limitations that concern the instruments utilized in the present study are discussed in this regard. 相似文献
757.
Cynthia Cannon Poindexter 《Child and Adolescent Social Work Journal》2000,17(5):403-405
AIDS AND THE NEW ORPHANS COPING WITH DEATH. Barbara O. Dane & Carol Levine (Eds.). Westport, Connecticut: Auburn House, 1994, 158 pp.; $49.95 (hardback) or $17.95 (paperback). 相似文献
758.
759.
760.
Hans W. Bierhoff Günter F. Müller Beate Küpper 《Gruppendynamik und Organisationsberatung》2000,31(2):141-153
A German version of the Organizational Citizenship Behavior Questionnaire (GOCBQ) is developed and tested. Study 1 was conducted with 150 students working together in 39 project groups. The results show that the internal consistency and test-retest-reliability of the GOCBQ are good. Moreover, the GOCBQ measures a general altruism orientation which can be interpreted as a stable trait. The GOCBQ does neither correlate substantially with demographical variables nor with extroversion or neuroticism. Instead, substantial correlations are registered with mood and group atmosphere. In study 2 results from study 1 were cross-validated with data from 128 voluntary and professional helpers, in study 3 with data from 43 professionals. Implications for future research and applications in working life are discussed. 相似文献