全文获取类型
收费全文 | 934篇 |
免费 | 71篇 |
专业分类
各国政治 | 47篇 |
工人农民 | 135篇 |
世界政治 | 50篇 |
外交国际关系 | 37篇 |
法律 | 552篇 |
中国政治 | 17篇 |
政治理论 | 167篇 |
出版年
2023年 | 12篇 |
2022年 | 18篇 |
2021年 | 20篇 |
2020年 | 31篇 |
2019年 | 51篇 |
2018年 | 77篇 |
2017年 | 59篇 |
2016年 | 77篇 |
2015年 | 27篇 |
2014年 | 50篇 |
2013年 | 143篇 |
2012年 | 35篇 |
2011年 | 44篇 |
2010年 | 27篇 |
2009年 | 36篇 |
2008年 | 40篇 |
2007年 | 37篇 |
2006年 | 23篇 |
2005年 | 30篇 |
2004年 | 27篇 |
2003年 | 24篇 |
2002年 | 19篇 |
2001年 | 6篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 4篇 |
1997年 | 8篇 |
1996年 | 1篇 |
1995年 | 6篇 |
1994年 | 7篇 |
1993年 | 5篇 |
1992年 | 7篇 |
1991年 | 1篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1986年 | 5篇 |
1985年 | 6篇 |
1984年 | 4篇 |
1982年 | 4篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1968年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有1005条查询结果,搜索用时 15 毫秒
821.
822.
Sharlene A. Wolchik Irwin N. Sandler Emily Winslow Vicki Smith-Daniels 《Family Court Review》2005,43(1):65-80
This article reviews prevention programs that target primary residential parents as change agents for improving children's postdivorce adjustment. First, we review parental risk and protective factors for children from divorced families, including parenting quality, parental mental health problems, interparental conflict, and contact with the nonresidential parent. Following a discussion of brief informational interventions, we describe the findings of evaluations of three multisession, skill-building interventions for divorced parents. Impressive evidence is presented that parenting is a modifiable protective factor and that improving parenting leads to improvements in children's postdivorce adjustment. We then discuss, in greater detail, the New Beginnings Program, which we highlight because it has shown repeated, immediate effects on children's mental health outcomes as well as long-term effects on a wide array of other meaningful outcomes, such as diagnosis of mental disorder in the past year, externalizing problems, alcohol and drug use, and academic performance. Also, mediational analyses have shown that program-induced changes in parenting accounted for changes in mental health outcomes. The remainder of the article describes a research and action agenda that is needed to successfully implement the New Beginnings Program in domestic relations courts. 相似文献
823.
824.
Emily J. Pudden David L. VanderZwaag 《Review of European Community & International Environmental Law》2007,16(1):36-44
Canada and the USA have developed a series of cooperative initiatives that address transboundary fisheries issues in the Gulf of Maine. The Canada–USA Steering Committee serves as an umbrella forum for discussing and coordinating transboundary management measures. Through the work of the Transboundary Resource Assessment Committee and the Transboundary Management Guidance Committee, the Steering Committee has overseen the development of joint scientific stock assessments and a sharing agreement for groundfish resources in the vicinity of the eastern Georges Bank. The bilateral Fisheries Enforcement Agreement helps ensure the success of such cooperative management initiatives by combating illegal fishing in the vicinity of the international boundary. However, the largely informal 'under the radar screen' arrangements, while positive on many fronts, to date fall short of fully implementing key principles of sustainable development, such as public participation, the ecosystem approach, integration and precaution. 相似文献
825.
Emily K. Weisburst 《Journal of policy analysis and management》2019,38(2):338-365
As police officers have become increasingly common in U.S. public schools, their role in school discipline has often expanded. While there is growing public debate about the consequences of police presence in schools, there is scant evidence of the impact of police on student discipline and academic outcomes. This paper provides the first quasi‐experimental estimate of funding for school police on student outcomes, leveraging variation in federal Community Oriented Policing Services (COPS) grants. Exploiting detailed data on over 2.5 million students in Texas, I find that federal grants for police in schools increase middle school discipline rates by 6 percent. The rise in discipline is driven by sanctions for low‐level offenses or school code of conduct violations. Further, I find that Black students experience the largest increases in discipline. I also find that exposure to a three‐year federal grant for school police is associated with a 2.5 percent decrease in high school graduation rates and a 4 percent decrease in college enrollment rates. 相似文献
826.
Steroid Use and School Violence,School Violent Victimization,and Suicidal Ideation Among Adolescents
Rebecca L. Elkins Keith King Laura Nabors Rebecca Vidourek 《Journal of school violence》2017,16(4):399-410
School violence, school violent victimization, and suicidal ideation among adolescents are serious public health concerns. This pilot study investigated the influence of steroid use on problem behaviors. Secondary data analyses of the 2014 PRIDE Questionnaire were performed based on information collected from 38,414 high school adolescents. Results indicated high rates of school violence, school violent victimization, and suicidal ideation. Steroid use was directly related to all three problem behaviors. Results varied based on sex, race, grade level, and ethnicity. Health professionals, schools, and prevention specialists may benefit from the findings of this study. Examination of other factors related to steroid use in relation to the aforementioned problem behaviors is imperative. 相似文献
827.
Mitochondrial DNA Profiling of Illegal Tortoiseshell Products Derived from Hawksbill Sea Turtles 下载免费PDF全文
The hawksbill sea turtle (Eretmochelys imbricata) is a highly endangered species, commonly poached for its ornate shell. “Tortoiseshell” products made from the shell are widely, although illegally, available in many countries. Hawksbills have a circumglobal distribution; thus, determining their origin is difficult, although genetic differences exist geographically. In the research presented, a procedure was developed to extract and amplify mitochondrial DNA from tortoiseshell items, in an effort to better understand where the species is being poached. Confiscated tortoiseshell items were obtained from the U.S. Fish and Wildlife Service, and DNA from 56 of them was analyzed. Multiple mitochondrial haplotypes were identified, including five not previously reported. Only one tortoiseshell item proved to be of Atlantic origin, while all others corresponded to genetic stocks in the Indo‐Pacific region. The developed methodology allows for unique, and previously unattainable, genetic information on the illegal poaching of sea turtles for the decorative tortoiseshell trade. 相似文献
828.
Recent research has revealed that misinformation from gestures can influence eyewitness memory. However, it is still unclear whether gestural misinformation can emulate the effects of verbal misinformation on the reporting of major details in serious crimes. To investigate the salience of suggestions provided nonverbally, and how these compare to those made verbally, two experiments were conducted. In Experiment 1, participants watched footage of a crime scene and were presented with one of two types of gestures during questioning that suggested different interpretations of the crime. The results confirmed that the gestures influenced responses, with participants altering their interpretation of the crime according to the information gestured to them. Experiment 2 built on this to investigate how comparable gestural influence was to verbal influence. The results revealed that gestural misinformation caused participants to alter their interpretation of the crime and elicited the same effects as verbal misinformation. Across the two experiments, participants were unlikely to identify the misleading gestures or report feeling misled by them. These results reveal new insights into the strength of gestural misinformation and show that, despite their subtle nature in communication, gestures can exert a powerful influence in eyewitness interviews. 相似文献
829.
830.