全文获取类型
收费全文 | 1074篇 |
免费 | 65篇 |
专业分类
各国政治 | 55篇 |
工人农民 | 148篇 |
世界政治 | 96篇 |
外交国际关系 | 59篇 |
法律 | 538篇 |
中国政治 | 14篇 |
政治理论 | 225篇 |
综合类 | 4篇 |
出版年
2024年 | 2篇 |
2023年 | 19篇 |
2022年 | 8篇 |
2021年 | 14篇 |
2020年 | 28篇 |
2019年 | 52篇 |
2018年 | 66篇 |
2017年 | 83篇 |
2016年 | 78篇 |
2015年 | 43篇 |
2014年 | 45篇 |
2013年 | 162篇 |
2012年 | 60篇 |
2011年 | 54篇 |
2010年 | 36篇 |
2009年 | 45篇 |
2008年 | 48篇 |
2007年 | 53篇 |
2006年 | 52篇 |
2005年 | 32篇 |
2004年 | 18篇 |
2003年 | 16篇 |
2002年 | 14篇 |
2001年 | 13篇 |
2000年 | 7篇 |
1999年 | 10篇 |
1998年 | 7篇 |
1997年 | 7篇 |
1996年 | 4篇 |
1995年 | 9篇 |
1994年 | 6篇 |
1993年 | 7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 | 6篇 |
1982年 | 4篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1974年 | 2篇 |
1966年 | 1篇 |
排序方式: 共有1139条查询结果,搜索用时 31 毫秒
921.
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
922.
Institutional theories of party system size tell us that voters and parties should anticipate the mechanical effects of electoral systems and adjust their behaviour accordingly. If these expectations hold true, then the size of the party system at the electoral and legislative levels should maintain a long-run equilibrium relationship, as the number of parties receiving votes is adjusted in response to the number of parties in the legislature. I estimate a series of error-correction models to examine this expectation in 16 Western democracies from 1950 to 2005. Party system size at the electoral level does exhibit a general, equilibrium relationship with party system size in the legislature. However, this relationship has recently disappeared in single-member-district systems. This growing disparity between party system size at the electoral and legislative levels signals important changes in the nature of electoral representation. 相似文献
923.
924.
925.
Heather Hodges Colin Kuehl Sarah E. Anderson Phillip J. Ehret Cameron Brick 《Journal of policy analysis and management》2020,39(4):1076-1099
As populations increase and droughts intensify, water providers are using tools such as persuasive messaging to decrease residential water use. However, district-led messaging campaigns are rarely informed by psychological science, evaluated for effectiveness, or strategically disseminated. In collaboration with a water district, we report a field experiment among single-family households using persuasive messaging based on the information-motivation-behavioral skills model (IMB). We randomly assigned 10,000 households to receive different mailings and measured household water use. All messaging reduced water consumption relative to the control. On average, water use dropped 0.68 hundred cubic feet (HCF) (509 gallons) per household in the first month. Had all 10,000 single-family, occupied, non-agricultural residences been mailed the IMB messaging, more than five million gallons would have been saved in the first month. The effects declined but persisted for approximately three months and were three to six times greater in households with high water use (75th to 90th percentiles) relative to average water use. These findings suggest that combining message elements from the IMB model can reduce residential water use and that targeting high-use households is particularly cost-effective. 相似文献
926.
927.
928.
929.
930.
Julia R. Correll Sarah Cusworth Walker Todd C. Edwards 《Journal of family violence》2017,32(2):243-255
Child-to-parent abuse (CPA) is an under-addressed form of family violence and relatively few resources are available for families experiencing CPA. The Step-Up program is a CPA-specific, family-level, group format intervention program in King County, Washington. Qualitative and long-term research on CPA intervention programs is lacking, and it is unknown how parents perceive the effects of participating in Step-Up after program completion. Fifteen parents who completed Step-Up with their adolescent child participated in individual semi-structured telephone or in-person interviews. Participants were asked about their perceptions of the effects of Step-Up participation, how they and their child have used skills taught in the program, and which program features were most and least effective. Participants expressed largely positive effects of participating in Step-Up, including decreased violent behavior by their adolescents and improved parent-child relationships. Recommendations for improving Step-Up included the inclusion of follow-up sessions to further reinforce behavior change and increased program accessibility. 相似文献