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   797篇
  免费   52篇
各国政治   66篇
工人农民   35篇
世界政治   80篇
外交国际关系   70篇
法律   365篇
中国政治   1篇
政治理论   223篇
综合类   9篇
  2023年   3篇
  2022年   4篇
  2021年   9篇
  2020年   16篇
  2019年   25篇
  2018年   33篇
  2017年   41篇
  2016年   36篇
  2015年   39篇
  2014年   27篇
  2013年   119篇
  2012年   31篇
  2011年   35篇
  2010年   18篇
  2009年   39篇
  2008年   41篇
  2007年   39篇
  2006年   41篇
  2005年   33篇
  2004年   29篇
  2003年   23篇
  2002年   21篇
  2001年   17篇
  2000年   17篇
  1999年   7篇
  1998年   7篇
  1997年   15篇
  1996年   6篇
  1995年   4篇
  1994年   6篇
  1993年   2篇
  1992年   8篇
  1991年   5篇
  1990年   3篇
  1989年   5篇
  1988年   4篇
  1987年   3篇
  1986年   2篇
  1985年   3篇
  1984年   3篇
  1983年   3篇
  1982年   4篇
  1981年   2篇
  1979年   2篇
  1978年   2篇
  1977年   4篇
  1973年   4篇
  1968年   1篇
  1967年   1篇
  1966年   1篇
排序方式: 共有849条查询结果,搜索用时 328 毫秒
791.
792.
793.
Many scholars have suggested that Americans' positions on gun control are the product of culture conflicts. This assertion has been largely based on associations of gun control opinion with membership in social groups believed to be hostile, or favorable, towards gun ownership, rather than with direct measures of the cultural traits thought to mediate the effects of group membership on gun control opinion. Data from a 2005 national telephone survey were analyzed to test competing theories of why people support handgun bans. Instrumental explanations, which stress belief in a policy's likely effectiveness, accounted for less than 25 percent of the variation in support. The results supported the culture conflict perspective. Those who endorsed negative stereotypes about gun owners, and who did not believe in the need to defend their own homes against crime (versus relying on the police) were more likely to support handgun bans.  相似文献   
794.
The Supplementary Homicide Reports (SHR), assembled by the Federal Bureau of Investigation (FBI), have for many years represented the most valuable source of information on the patterns and trends in murder and non-negligent manslaughter. Despite their widespread use by researchers and policy makers alike, these data are not completely without their limitations, the most important of which involves missing or incomplete incident reports. In this analysis, we develop methods for addressing missing data in the 1976–2005 SHR cumulative file, related to both non-reports (unit missingness) and incomplete reports (item missingness). For incomplete case data (that is, missing characteristics on victims, offenders or incidents), we implement a multiple imputation (MI) approach based on a log-linear model for incomplete multivariate categorical data. Then, to adjust for unit missingness, we adopt a weighting scheme linked to FBI annual estimates of homicide counts by state and National Center for Health Statistics mortality data on decedent characteristics in coroners’ reports for deaths classified as homicide. The result is a fully-imputed SHR database for 1976–2005. This paper examines the effects of MI and case weighting on victim/offender/incident characteristics, including standard errors of parameter estimates resulting from imputation uncertainty.
Marc L. SwattEmail:
  相似文献   
795.
This article describes a study that used a computer-based task to investigate the emotional recognition skills of child sexual abusers. The experiment consisted of two phases (prime and probe) and measured both response time and error rates to facial expressions. The priming phase of the experiment consisted of the presentation of short phrases via computer of either sexual or neutral content. The probe phase of the experiment consisted of the presentation of adult facial expressions depicting either the emotion fear or surprise. Results showed child sexual abusers to be slightly less accurate overall. Furthermore, contrary to prediction, the effect of sexual priming appeared to make child sexual abusers actually better at recognizing fearful faces (p = .055). This result is discussed in relation to current victim empathy theory and treatment implications for sexual offenders.  相似文献   
796.
Abstract: An unexpected infant death is usually investigated with a complete autopsy. If evidence of prior trauma is found at autopsy in these cases, suspicion is raised for nonaccidental trauma. In a young infant, the residua of trauma received during birth has the potential to be incorrectly interpreted as nonaccidental trauma. We report a the findings of a 4 1/2‐month‐old‐infant that died unexpectedly with a healing linear skull fracture and a circular lesion over the calvarium found at autopsy. Though this lesion was concerning, the remainder of the autopsy and the histological findings did not support a diagnosis of recent trauma. Review of the literature describing birth injuries made the diagnosis of healing, residual birth trauma more convincing in this case.  相似文献   
797.
798.
Debus  Marc  Tosun  Jale 《Policy Sciences》2021,54(3):477-491
Policy Sciences - The COVID-19 pandemic has forced governments to impose major restrictions on individual freedom in order to stop the spread of the virus. With the successful development of a...  相似文献   
799.
Regulatory impact assessments frequently embed stakeholder consultations in their design. Canada was one of the early adopters of such an approach and therefore has systematic documentation on the actors taking part in these consultations. This article asks whether these consultations have an influence on regulatory change and whether business disproportionally benefits from them. After converting the documentation into data, we find that these consultations do in fact matter: the more diversified the stakeholders taking part, the more stringent the changed regulations. But we also found that for a subset of regulatory changes, those likely to carry high economic stakes, business takes advantage of the consultation, often obtaining some reduction in regulatory stringency. These reductions, however, are conditioned on the limited presence of opposing views expressed during the consultations.  相似文献   
800.
Raw material markets have proven to be challenging in recent years. The so‐called critical raw materials (CRMs), which are required for green technology, have particularly high environmental and supply risks. The revised German raw materials strategy attempts to address challenges of production and supply of CRMs and other mineral‐based raw materials. This contribution analyzes the motivation, measures, goals, and challenges of the German raw materials strategy in the light of global economic and political developments, applying the qualitative method GABEK®. Results show that the revised strategy is more ambitious and reaches farther than the initial strategy of 2010. Challenges that remain include the lack of willingness of the German industry to engage in mine production and the more pro‐active political approaches demonstrated elsewhere. As all major economic powerhouses outside of Europe pursue a hands‐on approach, it remains questionable if the revised German raw materials strategy will fundamentally be able to sustainably secure raw material supply for the German industry.  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