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   462篇
  免费   25篇
各国政治   16篇
工人农民   25篇
世界政治   22篇
外交国际关系   29篇
法律   237篇
中国政治   4篇
政治理论   153篇
综合类   1篇
  2022年   4篇
  2021年   4篇
  2020年   13篇
  2019年   16篇
  2018年   14篇
  2017年   19篇
  2016年   17篇
  2015年   8篇
  2014年   18篇
  2013年   65篇
  2012年   5篇
  2011年   15篇
  2010年   11篇
  2009年   11篇
  2008年   18篇
  2007年   20篇
  2006年   22篇
  2005年   15篇
  2004年   22篇
  2003年   10篇
  2002年   11篇
  2001年   15篇
  2000年   10篇
  1999年   12篇
  1998年   9篇
  1997年   10篇
  1996年   3篇
  1995年   5篇
  1994年   11篇
  1993年   5篇
  1992年   5篇
  1991年   3篇
  1990年   2篇
  1989年   2篇
  1988年   5篇
  1987年   4篇
  1986年   6篇
  1985年   4篇
  1984年   6篇
  1983年   3篇
  1982年   6篇
  1981年   3篇
  1980年   3篇
  1979年   5篇
  1976年   1篇
  1975年   2篇
  1973年   4篇
  1971年   1篇
  1968年   1篇
  1967年   1篇
排序方式: 共有487条查询结果,搜索用时 31 毫秒
371.
This article investigates the Thatcher government’s attempts to suppress or censor reporting on secret intelligence issues in the early 1980s. It examines official reactions to a BBC intrusion into the secret world, as the long-running Panorama documentary strand analysed the role and accountability of Britain’s clandestine services. It also assesses the extent of collusion between the government and the BBC’s senior management. The Panorama affair was an important waypoint on the journey towards the dramatic Spycatcher episode of the mid-1980s. The key players on the government side – Thatcher and Cabinet Secretary Robert Armstrong – failed to learn the lessons of the 1980–81 affair, that it was often more dangerous to attempt suppression than to simply let events run their course.  相似文献   
372.
Barth  Jay  Burnett  Craig M.  Parry  Janine 《Political Behavior》2020,42(4):1015-1034
Political Behavior - A century ago, Progressive reformers in the U.S. introduced the institutional innovations of direct democracy, claiming these reforms would cultivate better citizens. Two...  相似文献   
373.
This study focused on whether and how deliberations affected the comprehension of capital penalty phase jury instructions and patterns of racially discriminatory death sentencing. Jury-eligible subjects were randomly assigned to view one of four versions of a simulated capital penalty trial in which the race of defendant (Black or White) and the race of victim (Black or White) were varied orthogonally. The participants provided their initial “straw” sentencing verdicts individually and then deliberated in simulated 4–7 person “juries.” Results indicated that deliberation created a punitive rather than lenient shift in the jurors’ death sentencing behavior, failed to improve characteristically poor instructional comprehension, did not reduce the tendency for jurors to misuse penalty phase evidence (especially, mitigation), and exacerbated the tendency among White mock jurors to sentence Black defendants to death more often than White defendants.  相似文献   
374.
We ask whether informal interactions between university and industry scientists result in collaborative research. Using data from a national survey of tenured and tenure-track scientists and engineers in U.S. research extensive universities, we demonstrate that university scientists’ informal interactions with private sector companies increase both the likelihood and intensity of collaborative research with industry.
Branco PonomariovEmail:
  相似文献   
375.
376.
377.
Recent discussions have revolved around the concept of ancestry and ancestry estimation; however, the associated terminology and its theoretical underpinnings have not been similarly examined. This research evaluates the concepts (e.g., race, ancestry, ethnicity) currently in use, examines if they are consistent with the groups employed to illustrate them (e.g., Black, European, Hispanic), and looks for patterns in language usage. Articles in the Anthropology, Odontology, and General sections of the Journal of Forensic Sciences between 2009 and 2019 were evaluated for ancestry‐related language use. For each article, the concepts, examples, and bibliographic information were recorded, and the relationship between concept and example was examined. These data were cross‐tabulated to evaluate relationships between the variables. Cramer's V was used to assess the strength of association of these relationships. In this sample, ancestry predominates, especially recently The concept used is significantly associated with all variables except publication date and authors’ institution(s). Despite the prevalence of the ancestry concept, racially based terms for individual groups were common. The use of ancestry, over race, in forensic contexts has been suggested to be a primarily linguistic change; these results may support that assertion. Inconsistent language usage leads to a lack of clarity in meaning among researchers and misinterpretation of the data. It is critical to recognize that inconsistencies exist, but also to understand why they exist. These results underscore the long overdue need for the inclusion of diverse perspectives in forensic anthropology, especially in the current conversations surrounding ancestry and ancestry estimation.  相似文献   
378.
Isotopic signatures used in the georeferencing of human remains are largely fixed by spatially distinct geologic and environmental processes. However, location-dependent temporal changes in these isotope ratios should also be considered when determining an individual’s provenance and/or trajectory. Distributions of the relevant isotopes can be impacted by predictable external factors such as climate change, delocalisation of food and water sources and changes in sources and uses of metals. Using Multi-Collector Inductively-Coupled Plasma Mass Spectrometer (MC-ICP-MS) analyses of 206Pb/207Pb in tooth enamel and dentin from a population of 21 ± 1-year-old individuals born circa 1984 and isotope ratio mass spectrometry (IRMS) of δ18O in their enamel, we examined the expected influence of some of these factors. The resulting adjustments to the geographic distribution of isotope ratios (isoscapes) found in tooth enamel and dentin may contain additional useful information for forensic identification, but the shifts in values can also impact the uncertainty and usefulness of identifications if they are not taken into account.

KEY POINTS

  • Isoscapes of 206Pb/207Pb and δ18O used for geolocation are not static.
  • Within a few years, the enamel and dentin of a person may exhibit measurable differences in 206Pb/207Pb even without changing locations.
  • Changes in climatic patterns tied to rising temperatures are more significant than the direct effect of increasing temperature on δ18O fixed in tooth bioapatite.
  • Third molar (M3) enamel mineralisation includes material incorporated from before formal amelogenesis takes place.
  相似文献   
379.
Abstract

Connectivity infrastructure is constantly expanding, increasing internet access across countries, regions and socio-political contexts. Given the fast-changing geography of the internet, there is a growing demand to strengthen cyber capacity beyond national frameworks, in order to develop a transnationally coherent and coordinated governance approach to cybersecurity. In this context, cyber capacity building initiatives are increasingly central in international debates, with the ambition to support countries in the Global South in fostering their cybersecurity strategy from technical and policy perspectives. This article discusses the key factors explaining states’ efforts to enhance their cyber capacity. Based on a cross-national quantitative research approach, the findings contradict international relations (IR)-derived approaches to cybersecurity, which assume that countries develop their cyber capacity according to external security threats, domestic politics or norms. In line with existing research on the role that science plays in policymaking processes more broadly, our results suggest instead that a country’s science and technical knowledge is the most robust explanation for that state’s cyber capacity level. These findings emphasise the need for policymakers to support countries in the Global South in developing their cyber capacity beyond national security paradigms by strengthening education and technical skills in contexts lacking in this resource.  相似文献   
380.
Abstract

In 2016, New York became the latest state to interpret insurance policies with prior insurance or non-cumulation of liability clauses as permitting a policyholder to recover damages under “all sums” for long-tail liabilities, including environmental liabilities. But two major questions were left unanswered in New York, as in many other states, when a policyholder seeks all sums recovery from a non-settled insurer after the policyholder settles with other insurers: first, how to account for a policyholder’s prior settlements—through set-off, contribution, or both. Second, how to calculate any set-off or contribution—should it be pro tanto, pro rata, or something else. This article examines the arguments on both sides of these issues and looks ahead to how courts may resolve these questions going forward.  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