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   907篇
  免费   64篇
各国政治   73篇
工人农民   107篇
世界政治   87篇
外交国际关系   39篇
法律   407篇
中国政治   7篇
政治理论   248篇
综合类   3篇
  2023年   5篇
  2022年   3篇
  2021年   3篇
  2020年   15篇
  2019年   21篇
  2018年   32篇
  2017年   37篇
  2016年   38篇
  2015年   33篇
  2014年   28篇
  2013年   148篇
  2012年   28篇
  2011年   28篇
  2010年   23篇
  2009年   21篇
  2008年   47篇
  2007年   46篇
  2006年   39篇
  2005年   38篇
  2004年   39篇
  2003年   36篇
  2002年   32篇
  2001年   20篇
  2000年   12篇
  1999年   11篇
  1998年   10篇
  1997年   14篇
  1996年   16篇
  1995年   12篇
  1994年   12篇
  1993年   14篇
  1992年   9篇
  1991年   3篇
  1990年   9篇
  1989年   8篇
  1988年   7篇
  1987年   5篇
  1986年   5篇
  1985年   7篇
  1984年   8篇
  1983年   4篇
  1982年   7篇
  1981年   4篇
  1980年   8篇
  1979年   3篇
  1978年   4篇
  1977年   5篇
  1976年   5篇
  1972年   2篇
  1967年   2篇
排序方式: 共有971条查询结果,搜索用时 15 毫秒
961.
962.
This study examined subjective age (how old one feels) and associated variables in 148 emerging adults, ages 20–30 years. Seventy-six participants had a motor disability (cerebral palsy, spina bifida) and 72 had no motor disability. Participants completed questionnaires and were interviewed. There was no significant difference in subjective age between groups. Consistent with previous research, chronological and subjective ages were significantly negatively related in participants without motor disabilities. Chronological and subjective ages were unrelated in the group with motor disabilities but higher psychosocial maturity was related to an older subjective age. Perceptions of how much parents fostered autonomy did not predict subjective age in either group. In both groups, individuals whose parents treated them as younger reported feeling younger. Number of role transitions did not predict subjective age. The results highlight the importance of exploring motor disabilities as a source of diversity in the subjective ages of young people during the transition to adulthood.
Nancy L. GalambosEmail:
  相似文献   
963.
This report describes a cold case in which a cadaver of a 28-year-old female was exhumed in February 2005 from a cemetery in Battle Creek, Michigan. She had sustained a gunshot wound to the head and was found dead in her home on November 15, 1977. The body of the victim was subsequently embalmed and then buried at a depth of 1.8 m in an unsealed casket that was placed inside an unsealed cement vault. The exhumation yielded thousands of live specimens of a single species of the order Collembola or spring tails, Sinella (Coecobrya) tenebricosa (Entomobryidae). This species is considered to be a "tramp" species, cosmopolitan in the United States and Canada. Due to the ideal environmental conditions at the site, the population of this species underwent growth and development inside the casket for a number of years. Collected with the Collembola were large numbers of Acarina (mites) of the Family Glycyphagidae, and fly puparia, Conicera tibialis Schmitz (Order: Diptera, Family: Phoridae), also known as coffin flies. These invertebrates are sometimes mentioned by forensic investigators as occurring on corpses in graves, but aspects of their life history are rarely described. The species of Collembola that was found surviving and reproducing on this corpse in a casket exhumed after 28 years was the oldest reported grave site occurrence for any collembolan species based on a survey of the literature back to 1898.  相似文献   
964.
965.

The architecture of global carbon markets has changed significantly since the Paris Agreement and the 2030 Agenda for Sustainable Development Goals were both agreed in 2015. Voluntary, international cooperative approaches established in Article 6 of the Paris Agreement allow Parties to work together to achieve the targets set out in their respective Nationally Determined Contributions to limit global warming to an increase below 1.5–2 °C. In Article 6.4, a sustainable mitigation mechanism is established for which rules, modalities and procedures will be developed internationally considering the experience and lessons learned from existing mechanisms, such as the Clean Development Mechanism (CDM) and its Sustainable Development (SD) Tool. Historically the issue of making integrated assessments of sustainable development and mitigation actions has been politically and methodologically controversial for many reasons: developing countries fear that an international definition of SD will interfere with their sovereignty and therefore their ability to define their own development pathways; players in the carbon market fear that markets can only handle one objective, namely mitigation outcomes; and sustainable development is regarded as too complex and costly to be measured and quantified. In an effort to address these concerns, the article proposes a new methodology for the sustainability labelling of climate mitigation actions relevant to Article 6 approaches. The article draws on an application of the CDM SD tool to analyse 2098 Component Programme Activities that had entered the CDM Pipeline by January 2017. The article demonstrates that assessment of the sustainable development benefits of climate actions can be graded and labelled based on the analysis of qualitative data, which is less costly than applying a quantitative approach.

  相似文献   
966.
Scat hair presents a diverse profile of hairs for morphological assessment that may find versatile applications in wildlife forensic investigations. Successful morphological assessment of scat hair microstructure, however, depends on a robust sectioning methodology. We assessed the feasibility and efficacy of a cryosectioning technique compared to that of a gold standard hand‐sectioning technique. Scat hairs were embedded in paraffin wax and hand‐sectioned, while cryopreserved scat hairs were sectioned with a cryostat. The results showed that cryosectioning preserved the pristine morphology of the scat hair and provided cross sections more amenable to high‐resolution imaging of hair internal microstructure than hand‐sectioning. The cryosectioning technique may find novel applications as a more reliable and robust technique to aid (i) scat hair internal microstructure analysis for cross‐referencing with species identification keys in wildlife forensic studies and (ii) downstream toxicological analysis in wildlife forensic studies as hair biochemistry is not altered during cryopreservation.  相似文献   
967.

Research Summary

By drawing from psychology and economics, we present an experimental evaluation of a procedural justice training program designed to “slow down” police officers’ thought processes during citizen encounters. We find that officers who were randomly assigned to participate in training were as engaged in the community as similarly situated officers, but they were less likely to resolve incidents with an arrest or to be involved in incidents where force was used. These changes were most evident among officers who worked in areas with a modest level of risk.

Policy Implications

Police officers who are actively engaged with the public can reduce crime through general deterrence and by arresting criminals. Nevertheless, excessive discretionary arrests and the use of force by officers can reduce public trust in the police. To date, there is scant evidence as to how police departments can successfully train officers to balance enforcement and public trust in the field. Through our study, we demonstrate that a relatively minor supervisory intervention may cause substantive changes in how police and citizens interact with each other.  相似文献   
968.
The current study examined the efficacy of a specialized mental health court in reducing recidivism for severely mentally ill defendants with comorbid substance use disorders. There is a wealth of research supporting the efficacy of mental health courts in reducing recidivism for those with severe mental illness; however, the benefit of these courts for individuals with severe mental illness and comorbid substance use disorders has received limited empirical attention. Participants were 514 defendants enrolled in either a traditional adversarial court or a specialized mental health court. Recidivism was assessed across different outcome variables, including frequency of reoffending, severity of new offenses, and length of time to reoffend. When compared to participants in the traditional adversarial court, enrollment in mental health court was associated with a greater length of time to rearrest and fewer participants were rearrested in the mental health court than the traditional court. Group differences between those with and without comorbid substance use disorders who were enrolled in the mental health court were not found across recidivism outcome metrics. Results of the current study are particularly promising given that defendants with substance use disorders are at a greater risk for reoffending.  相似文献   
969.
970.
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