全文获取类型
收费全文 | 1022篇 |
免费 | 53篇 |
专业分类
各国政治 | 52篇 |
工人农民 | 146篇 |
世界政治 | 93篇 |
外交国际关系 | 53篇 |
法律 | 519篇 |
中国政治 | 14篇 |
政治理论 | 195篇 |
综合类 | 3篇 |
出版年
2024年 | 3篇 |
2023年 | 17篇 |
2022年 | 8篇 |
2021年 | 14篇 |
2020年 | 28篇 |
2019年 | 50篇 |
2018年 | 63篇 |
2017年 | 81篇 |
2016年 | 77篇 |
2015年 | 42篇 |
2014年 | 44篇 |
2013年 | 145篇 |
2012年 | 55篇 |
2011年 | 53篇 |
2010年 | 33篇 |
2009年 | 45篇 |
2008年 | 48篇 |
2007年 | 52篇 |
2006年 | 48篇 |
2005年 | 30篇 |
2004年 | 16篇 |
2003年 | 13篇 |
2002年 | 13篇 |
2001年 | 8篇 |
2000年 | 4篇 |
1999年 | 10篇 |
1998年 | 7篇 |
1997年 | 6篇 |
1996年 | 4篇 |
1995年 | 8篇 |
1994年 | 5篇 |
1993年 | 6篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 5篇 |
1984年 | 4篇 |
1983年 | 5篇 |
1982年 | 4篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1974年 | 2篇 |
排序方式: 共有1075条查询结果,搜索用时 15 毫秒
851.
Sarah H. Bana Kelly Bedard Maya Rossin-Slater 《Journal of policy analysis and management》2020,39(4):888-929
We use 10 years of California administrative data with a regression kink design to estimate the causal impacts of benefits in the first state-level paid family leave program for women with earnings near the maximum benefit threshold. We find no evidence that a higher weekly benefit amount (WBA) increases leave duration or leads to adverse future labor market outcomes for this group. In contrast, we document that a rise in the WBA leads to an increased likelihood of returning to the pre-leave firm (conditional on any employment) and of making a subsequent paid family leave claim. 相似文献
852.
Amy T. Schalet John S. Santelli Stephen T. Russell Carolyn T. Halpern Sarah A. Miller Sarah S. Pickering Shoshana K. Goldberg Jennifer M. Hoenig 《Journal of youth and adolescence》2014,43(10):1595-1610
Scientific research has made major contributions to adolescent health by providing insights into factors that influence it and by defining ways to improve it. However, US adolescent sexual and reproductive health policies—particularly sexuality health education policies and programs—have not benefited from the full scope of scientific understanding. From 1998 to 2009, federal funding for sexuality education focused almost exclusively on ineffective and scientifically inaccurate abstinence-only-until-marriage (AOUM) programs. Since 2010, the largest source of federal funding for sexual health education has been the “tier 1” funding of the Office of Adolescent Health’s Teen Pregnancy Prevention Initiative. To be eligible for such funds, public and private entities must choose from a list of 35 programs that have been designated as “evidence-based” interventions (EBIs), determined based on their effectiveness at preventing teen pregnancies, reducing sexually transmitted infections, or reducing rates of sexual risk behaviors (i.e., sexual activity, contraceptive use, or number of partners). Although the transition from primarily AOUM to EBI is important progress, this definition of evidence is narrow and ignores factors known to play key roles in adolescent sexual and reproductive health. Important bodies of evidence are not treated as part of the essential evidence base, including research on lesbian, gay, bisexual, transgender, queer, and questioning (LGBTQ) youth; gender; and economic inequalities and health. These bodies of evidence underscore the need for sexual health education to approach adolescent sexuality holistically, to be inclusive of all youth, and to address and mitigate the impact of structural inequities. We provide recommendations to improve US sexual health education and to strengthen the translation of science into programs and policy. 相似文献
853.
Shari Miller Jason Williams Stacey Cutbush Deborah Gibbs Monique Clinton-Sherrod Sarah Jones 《Journal of youth and adolescence》2013,42(4):607-618
Although there is growing recognition of the problem of dating violence, little is known about how it unfolds among young adolescents who are just beginning to date. This study examined classes (subgroups) and transitions between classes over three time points based on dating violence, bullying, and sexual harassment perpetration and victimization experienced by youth. The sample was ethnically diverse, consisting of 795 seventh-grade students from schools that were part of a multi-site, longitudinal evaluation of a dating violence initiative (50 % female; 27 % White, 32 % African American, 25 % Latino, 16 % other or multiple races). Results from latent transition analyses revealed five classes of students with distinct behavioral profiles: multi-problem (victimization and perpetration), bullying and sexual harassment (victimization and perpetration), bullying (victimization and perpetration) and sexual harassment (victimization only), bullying (victimization and perpetration), and a least problem group. The majority of classes were characterized by reports of both perpetration and victimization for at least one behavior. Girls were more likely to be in the less problematic classes. Class membership was fairly stable across the three time points. When students transitioned to a different class, the shift was most often from a more problematic to a less problematic class, particularly for girls. The findings support understanding dating violence within a dynamic, developmental process that recognizes related behaviors within and across individuals. Overall, the findings highlight the utility of person-oriented approaches to enhance our understanding of longitudinal profiles and transitions over time for dating violence and related behaviors. 相似文献
854.
855.
856.
Every state in the United States authorizes its courts to issue civil orders of protection for victims of domestic violence.
Ideally, restraining orders should be available to all victims. However, consistent with the patriarchal paradigm, research
suggests that judicial responses to domestic violence temporary restraining order (TRO) requests may be sex-differentiated.
This paper reports on a study that explored equal protection issues in family law by evaluating gender and violence profiles
of a random sample of 157 TRO petitions involving intimate partners, dating couples, and married persons in a California district
court. The majority of cases involved allegations of low or moderate levels of violence perpetrated by male defendants against
female plaintiffs. Although there were no systematic differences in level of violence as a function of plaintiff sex, judges
were almost 13 times more likely to grant a TRO requested by a female plaintiff against her male intimate partner, than a
TRO requested by a male plaintiff against his female partner. Further analyses revealed that this sex differentiation was
limited to cases involving allegations of low-level violence.
相似文献
Henry J. MullerEmail: |
857.
Sarah Ann Wheeler 《The Journal of Technology Transfer》2009,34(4):422-439
This paper analyses what influences professionals’ beliefs on agricultural genetic engineering. A telephone survey was conducted
in 2004 on Australian public agricultural professionals. Using an ordered probit regression, some of the significant key influences
on overall beliefs were: age; research relevance; ethnicity; farm background; information and occupational effects; attitudes
towards the current sustainability of conventional agriculture; attitudes towards agricultural research issues; and attitudes
towards the individual aspects of genetic engineering. Somewhat surprisingly, subjective knowledge of genetic engineering
was not a significant factor in influencing overall beliefs, although it did play a positive influence on some individual
beliefs (such as the technology’s profitability benefits and that there is no need for more long-term research before further
general release of genetically engineered products). However, more research on the links between actual knowledge and acceptance
are needed before any definitive conclusions can be drawn.
相似文献
Sarah Ann WheelerEmail: |
858.
Ian Lundberg Sarah L. Gold Louis Donnelly Jeanne Brooks‐Gunn Sara S. McLanahan 《Journal of policy analysis and management》2021,40(1):107-127
A lack of affordable housing is a pressing issue for many low‐income American families and can lead to eviction from their homes. Housing assistance programs to address this problem include public housing and other assistance, including vouchers, through which a government agency offsets the cost of private market housing. This paper assesses whether the receipt of either category of assistance reduces the probability that a family will be evicted from their home in the subsequent six years. Because no randomized trial has assessed these effects, we use observational data and formalize the conditions under which a causal interpretation is warranted. Families living in public housing experience less eviction conditional on pre‐treatment variables. We argue that this evidence points toward a causal conclusion that assistance, particularly public housing, protects families from eviction. 相似文献
859.
860.
This article analyses in detail the impact and effectiveness of peer-education projects implemented in Cambodia under the Reproductive Health Initiative for Asia (RHI), in an attempt to provide important lessons for the design and implementation of such interventions and to contribute to the development of best practice. Under RHI, which was the first programme in Cambodia designed specifically to address the sexual and reproductive health needs of young people, peer education was implemented as if it were a directly transferable method, rather than a process to be rooted in specific social and political contexts. Consequently, peer-education concepts of empowerment and participation conflicted with hierarchical traditions and local power relations concerning gender and poverty; peer educators were trained to deliver messages developed by adults; and interventions were not designed to reflect the social dynamics of youth peer groups. 相似文献