首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   487篇
  免费   13篇
各国政治   23篇
工人农民   52篇
世界政治   51篇
外交国际关系   28篇
法律   211篇
中国政治   3篇
政治理论   126篇
综合类   6篇
  2021年   3篇
  2020年   7篇
  2019年   10篇
  2018年   9篇
  2017年   13篇
  2016年   9篇
  2015年   8篇
  2014年   11篇
  2013年   61篇
  2012年   14篇
  2011年   11篇
  2010年   10篇
  2009年   6篇
  2008年   11篇
  2007年   26篇
  2006年   13篇
  2005年   11篇
  2004年   9篇
  2003年   9篇
  2002年   9篇
  2001年   15篇
  2000年   22篇
  1999年   16篇
  1998年   11篇
  1997年   17篇
  1996年   10篇
  1995年   4篇
  1994年   9篇
  1993年   12篇
  1992年   7篇
  1991年   12篇
  1990年   10篇
  1989年   7篇
  1988年   10篇
  1987年   6篇
  1986年   6篇
  1985年   8篇
  1984年   5篇
  1983年   5篇
  1981年   4篇
  1980年   7篇
  1979年   7篇
  1978年   7篇
  1977年   4篇
  1976年   3篇
  1974年   4篇
  1973年   2篇
  1972年   2篇
  1971年   2篇
  1970年   3篇
排序方式: 共有500条查询结果,搜索用时 15 毫秒
81.
Sequencing mitochondrial DNA hypervariable regions I and II (HVI and HVII) is useful in forensic missing person and unidentified remains cases. Improvements in ease and sensitivity of testing will yield results from more samples in a timely fashion. Routinely, amplification of HVI and HVII is followed by Sanger sequencing using the BigDye® Terminator v3.1 Cycle Sequencing kit (Applied Biosystems) using 4 μL of ready reaction mix (RRM). Each sequencing reaction is then purified through column filtration before capillary electrophoresis. Using lower amounts of RRM (2 μL or 1 μL) and purification using BigDye® XTerminator? (Applied Biosystems) instead of columns showed no loss of sequence length and increased the quality and the sensitivity of testing, allowing HVI and HVII typing from mitochondrial genome equivalent to 125 fg of nuclear DNA, or 100 pg of HVI/HVII amplicons. Using this methodology, testing can be completed in 1 day, and the cost of testing is reduced.  相似文献   
82.
ABSTRACT

Family court and abuse professionals have long been polarized over the use of parental alienation claims to discredit a mother alleging that the father has been abusive or is unsafe for the children. This paper reports the findings from an empirical study of ten years of U.S. cases involving abuse and alienation claims. The findings confirm that mothers’ claims of abuse, especially child physical or sexual abuse, increase their risk of losing custody, and that fathers’ cross-claims of alienation virtually double that risk. Alienation’s impact is gender-specific; fathers alleging mothers are abusive are not similarly undermined when mothers cross-claim alienation. In non-abuse cases, however, the data suggest that alienation has a more gender-neutral impact. These nuanced findings may help abuse and alienation professionals find some common ground.  相似文献   
83.
84.
When studying sensitive issues, including corruption, prejudice, and sexual behavior, researchers have increasingly relied upon indirect questioning techniques to mitigate such known problems of direct survey questions as underreporting and nonresponse. However, there have been surprisingly few empirical validation studies of these indirect techniques because the information required to verify the resulting estimates is often difficult to access. This article reports findings from the first comprehensive validation study of indirect methods. We estimate whether people voted for an anti‐abortion referendum held during the 2011 Mississippi General Election using direct questioning and three popular indirect methods: list experiment, endorsement experiment, and randomized response. We then validate these estimates against the official election outcome. While direct questioning leads to significant underestimation of sensitive votes against the referendum, indirect survey techniques yield estimates much closer to the actual vote count, with endorsement experiment and randomized response yielding the least bias.  相似文献   
85.
86.
87.
This study used a modified version of the Conflict Tactic Scale (Straus, 1990) to measure the expression of verbal and physical aggression among 572 college students (395 females and 177 males) involved in dating relationships over the previous year. Results indicated that 82% (n = 465) of the total sample reported having engaged in verbally aggressive behavior with a dating partner over the past year, whereas 21% (n = 116) admitted to acting in a physically aggressive manner over the same interval. No significant gender-based difference was found for verbal aggression scores; however, females were significantly more likely to report using physical force than were male students. Male and female students who used verbal aggression were characteristically similar to each. Both had experienced aggression from a parent as children and had drunk alcohol within 3 hours (before or after) an argument with a dating partner. Male and female students who admitted using physical force were dissimilar except that both had experienced parent-child aggression. For male students, having witnessed conjugal violence and their general drinking patterns were also significantly related to their using physical force, whereas for females, the use of physical force was associated with drinking alcohol within 3 hours of an argument with a dating partner.  相似文献   
88.
In this article it is argued that law graduates need to be prepared for working in a global legal context. Whether working in global law firms or small, local non-global law firms, law graduates need to have the knowledge, skills and attributes that will better equip them to work within and across multiple, international legal jurisdictions. The purpose of the article is twofold: first, to report on and disseminate research on a collaborative project on internationalising the Australian law curriculum aimed at preparing law graduates for global legal practice, of which the authors were the lead researchers; and second, to discuss and demonstrate the practical application of the proposed curriculum framework to the teaching of Constitutional Law.  相似文献   
89.
Using integrated administrative data from criminal justice and social service systems can harness information in meaningful ways that transcend traditional “silos” and allow communities to focus collective attention on important social issues that cross systemic boundaries. Despite recent advances in use of integrated administrative data, practical information to promote adoption by new users is lacking. Here we provide an introduction to potential uses of integrated administrative data for criminal justice researchers, including general benefits of using integrated data as well as implications for innovative research design. We describe a case example of data integration through a state data warehouse for a federally funded project on impact of incarceration on families. The project utilizes data from eight agencies (corrections, juvenile justice, mental health, substance use, social services, health, education, and environmental control) and includes development of an Online Analytical Processing cube. We draw from lessons learned to provide specific recommendations for developing researcher-practitioner partnerships that use integrated administrative data to improve translational criminal justice research and evidence-based practice and policy.  相似文献   
90.
Little is known about the adolescent risk factors and young adult health-related outcomes associated with running away from home. We examined these correlates of running away using longitudinal data from 4,329 youth (48% female, 85% white) who were followed from Grade 9 to age 21. Nearly 14% of the sample reported running away in the past year at Grade 10 and/or Grade 11. Controlling for demographics and general delinquency, running away from home was predicted by lack of parental support, school disengagement, greater depressive affect, and heavier substance use at Grade 9. In turn, runaways had higher drug dependence scores and more depressive symptoms at age 21 than non-runaways, even after taking these antecedent risk factors into account. Runaway status did not predict alcohol dependence risk at age 21. Results highlight the importance of substance use and depression, both as factors propelling adolescents to run away and as important long-term consequences of running away.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号