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   930篇
  免费   40篇
各国政治   47篇
工人农民   92篇
世界政治   81篇
外交国际关系   38篇
法律   433篇
中国政治   6篇
政治理论   271篇
综合类   2篇
  2023年   2篇
  2022年   4篇
  2021年   2篇
  2020年   10篇
  2019年   19篇
  2018年   28篇
  2017年   28篇
  2016年   31篇
  2015年   32篇
  2014年   27篇
  2013年   136篇
  2012年   30篇
  2011年   23篇
  2010年   23篇
  2009年   21篇
  2008年   42篇
  2007年   45篇
  2006年   36篇
  2005年   33篇
  2004年   36篇
  2003年   36篇
  2002年   34篇
  2001年   22篇
  2000年   18篇
  1999年   15篇
  1998年   13篇
  1997年   25篇
  1996年   15篇
  1995年   15篇
  1994年   15篇
  1993年   12篇
  1992年   12篇
  1991年   5篇
  1990年   13篇
  1989年   13篇
  1988年   13篇
  1987年   8篇
  1986年   9篇
  1985年   9篇
  1984年   12篇
  1983年   6篇
  1982年   7篇
  1981年   5篇
  1980年   6篇
  1978年   4篇
  1977年   5篇
  1976年   6篇
  1975年   4篇
  1971年   1篇
  1969年   1篇
排序方式: 共有970条查询结果,搜索用时 15 毫秒
941.

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   
942.
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   
943.

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   
944.
Abstract

Cultural dynamics have a significant impact on how sexual matters, including sexual abuse, are discussed in British South Asian communities. The ways in which these communities talk about sexual violence often reinforce patriarchal norms and values, especially those concerned with honour and shame. As a result, victims are either silenced or the blame for the sexual violence they have suffered is laid at their own feet. Addressing the fact that these problems are rooted in patriarchal norms and values is key to understanding how to tackle sexual offending effectively in such communities. Both retributive and restorative justice are necessary in responding to sex crimes; retributive approaches help to recognise victims’ suffering, while restorative approaches offer promising avenues for encouraging victims and offenders alike to speak about their experiences. Both approaches are essential components to reintegrating victims and offenders into their communities.  相似文献   
945.
This article analyses the substance of the European Union's and United States' democracy assistance in Ethiopia in 2005–2010. Does this case reveal a transatlantic split, whereby the EU focuses on the external context and the US on the partial regimes of embedded, liberal democracy? Emphasizing the importance of institutions in analysing how interests and ideas affect democracy assistance, the article investigates how the substance may differ between the European Development Fund (EDF), European Instrument for Democracy and Human Rights (EIDHR), US Agency for International Development (USAID) and the National Endowment for Democracy (NED). The analysis finds a transatlantic split whereby the EU focused more on the external context and the US more on the partial regimes. This transatlantic split can be explained by the combination of ideas and institutions. More specifically, it reflects a difference between the EDF and USAID in their focus on ownership, alignment and harmonization in democracy assistance. The combination of interests and institutions played a less significant role in explaining the substance of democracy assistance, as USAID emphasized the partial regimes, despite political control from the State Department.  相似文献   
946.
Although serial killings are relatively rare, they can be the cause of a great deal of anxiety while the killer remains at‐large. Despite the fact that the motivations for serial killings are typically quite complex, the psychological analysis of a serial killer can provide valuable insight into how and why certain individuals become serial killers. Such knowledge may be instrumental in preventing future serial killings or in solving ongoing cases. In certain serial killings, the various incidents have a variety of similar features. Identification of similarities between separate homicidal incidents is necessary to recognize that a serial killer may be actively killing. In this report, the authors present a group of serial killings involving three prostitutes who were shot to death over a 3‐month period. Scene and autopsy findings, including the unusual finding of postmortem enucleation of the eyes, led investigators to recognize the serial nature of the homicides.  相似文献   
947.
948.
Acetaminophen overdose is a leading cause of drug‐induced liver failure in the United States. Acetaminophen–protein adducts have been suggested as a biomarker of hepatotoxicity. The purpose of this study was to determine whether protein‐derived acetaminophen–protein adducts are quantifiable in postmortem samples. Heart blood, femoral blood, and liver tissue were collected at autopsy from 22 decedents suspected of opioid–acetaminophen overdose. Samples were assayed for protein‐derived acetaminophen–protein adducts, acetaminophen, and selected opioids found in combination products containing acetaminophen. Protein‐derived APAP‐CYS was detected in 17 of 22 decedents and was measurable in blood that was not degraded or hemolyzed. Heart blood concentrations ranged from 11 ng/mL (0.1 μM) to 7817 ng/mL (28.9 μM). Protein‐derived acetaminophen–protein adducts were detectable in liver tissue for 20 of 22 decedents. Liver histology was also performed for all decedents, and no evidence of centrilobular hepatic necrosis was observed.  相似文献   
949.
950.
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