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   1033篇
  免费   55篇
各国政治   68篇
工人农民   46篇
世界政治   65篇
外交国际关系   79篇
法律   523篇
中国政治   11篇
政治理论   288篇
综合类   8篇
  2024年   1篇
  2023年   6篇
  2022年   8篇
  2021年   17篇
  2020年   22篇
  2019年   36篇
  2018年   47篇
  2017年   60篇
  2016年   51篇
  2015年   27篇
  2014年   38篇
  2013年   198篇
  2012年   33篇
  2011年   42篇
  2010年   51篇
  2009年   39篇
  2008年   51篇
  2007年   45篇
  2006年   34篇
  2005年   37篇
  2004年   27篇
  2003年   16篇
  2002年   35篇
  2001年   13篇
  2000年   10篇
  1999年   15篇
  1998年   13篇
  1997年   11篇
  1996年   12篇
  1995年   5篇
  1994年   11篇
  1993年   12篇
  1992年   2篇
  1991年   7篇
  1990年   7篇
  1989年   7篇
  1988年   5篇
  1987年   6篇
  1986年   1篇
  1985年   4篇
  1984年   5篇
  1983年   4篇
  1982年   3篇
  1981年   5篇
  1980年   4篇
  1979年   1篇
  1976年   1篇
  1975年   2篇
  1974年   1篇
排序方式: 共有1088条查询结果,搜索用时 31 毫秒
141.
142.
Many observers describe prison subcultures as inherently and irredeemably antisocial. Research directly ties prison subcultures to violence, gang membership, and poor reintegration. In extreme cases, research has also suggested that prison subcultures contribute to incarcerated people joining radical groups or embracing violent extremist beliefs. These claims, however, ignore key differences in the larger cultural and social context of prisons. We examine the relationship between prison subcultures and prison radicalization based on semistructured qualitative interviews with 148 incarcerated men and 131 correctional officers from four western Canadian prisons. We outline several imported features of the prison subculture that make incarcerated people resilient to radicalized and extremist messaging. These features include 1) national cultural imaginaries; 2) the racial profile of a prison, including racial sorting or a lack thereof; and 3) how radicalization allowed incarcerated men and correctional officers to act outside the otherwise agreed-to subcultural rules. Our research findings stress the importance of contemplating broader sociocultural influences when trying to understand the relationship between radicalization and prison dynamics and politics.  相似文献   
143.

Research Summary

The Kansas City Preventive Patrol Experiment (KCPPE) was seen by its developers to have produced “consistent evidence of the lack of effects of any consequence on crime,” a conclusion that was to have a strong impact on assumptions about police patrol for almost half a century. We identified the original official crime data from the KCPPE, and reanalyzed outcomes focusing on a comparison of the “proactive” versus “control” beats (“reactive beats” were criticized because of violations of treatment integrity); examining broad categories of crime (to increase statistical power); and using count regression models. Our findings are not unequivocal, but point to modest impacts of police patrol on crime in police beats.

Policy Implications

Our findings suggest that lessons drawn for half a century from the KCPPE need to be revisited. The KCPPE does not show that police patrol in large areas has no influence on crime, and this finding is consistent with several more recent studies. At the same time, we note that the effects of patrol in the KCPPE using our analysis strategy, and those found in other studies of preventive patrol in larger areas, are about half that found in hot spots policing studies. This suggests that police agencies ideally should invest in focused hot spots policing initiatives. However, absent an ability to manage such initiatives, or the crime analysis capabilities to identify crime hot spots routinely, simpler preventive patrol schemes to utilize uncommitted patrol time can be seen as potentially effective in preventing crime.  相似文献   
144.
145.
146.
147.
To date, field experiments on campaign tactics have focused overwhelmingly on mobilization and voter turnout, with far more limited attention to persuasion and vote choice. In this paper, we analyze a field experiment with 56,000 Wisconsin voters designed to measure the persuasive effects of canvassing, phone calls, and mailings during the 2008 presidential election. Focusing on the canvassing treatment, we find that persuasive appeals had two unintended consequences. First, they reduced responsiveness to a follow-up survey among infrequent voters, a substantively meaningful behavioral response that has the potential to induce bias in estimates of persuasion effects as well. Second, the persuasive appeals possibly reduced candidate support and almost certainly did not increase it. This counterintuitive finding is reinforced by multiple statistical methods and suggests that contact by a political campaign may engender a backlash.  相似文献   
148.
This paper makes an original contribution to human–animal studies through the application of social construction theory to an iconic species of Australian snake, the coastal taipan. Little research attention using this approach has been focused on reptiles, and this study addresses this gap in the literature. The taipan has achieved a high level of notoriety in Australia. This paper seeks to understand why and how this has occurred. Drawing on a range of data derived from analysis of newspaper articles, popular magazines and books, and the scientific literature, four dominant narratives are identified: the taipan as an object of science and natural history, as social problem, as object quest and as celebrity. The insights gained from this study support the contention that the meanings made of Australia's fauna are fluid, historically contextualised and socially constructed. In the specific case of the taipan, key individuals, including scientists, popular natural historians and snake men contributed greatly to the species’ construction, as did popular cultural forms such as newspapers and natural history books.  相似文献   
149.
To understand why some international institutions have stronger dispute settlement mechanisms (DSMs) than others, we investigate the dispute settlement provisions of nearly 600 preferential trade agreements (PTAs), which possess several desirable case-selection features and are evoked more than is realized. We broaden the study of dispute settlement design beyond “legalization” and instead reorient theorizing around a multi-faceted conceptualization of the strength of DSMs. We posit that strong DSMs are first and foremost a rational response to features of agreements that require stronger dispute settlement, such as depth and large memberships. Multivariate empirical tests using a new data set on PTA design confirm these expectations and reveal that depth – the amount of policy change specified in an agreement – is the most powerful and consistent predictor of DSM strength, providing empirical support to a long-posited but controversial conjecture. Yet power also plays a sizeable role, since agreements among asymmetric members are more likely to have strong DSMs due to their mutual appeal, as are those involving the United States. Important regional differences also emerge, as PTAs across the Americas are designed with strong dispute settlement, as are Asian PTAs, which contradicts the conventional wisdom about Asian values and legalization. Our findings demonstrate that rationalism explains much of international institutional design, yet it can be enhanced by also incorporating power-based and regional explanations.  相似文献   
150.
The forensic literature suggests that when adolescents fall onto edged and pointed surfaces, depressed fractures can occur at low energy levels. This study documents impact biomechanics and fracture characteristics of infant porcine skulls dropped onto flat, curved, edged, and focal surfaces. Results showed that the energy needed for fracture initiation was nearly four times higher against a flat surface than against the other surfaces. While characteristic measures of fracture such as number and length of fractures did not vary with impact surface shape, the fracture patterns did depend on impact surface shape. While experimental impacts against the flat surface produced linear fractures initiating at sutural boundaries peripheral to the point of impact (POI), more focal impacts produced depressed fractures initiating at the POI. The study supported case‐based forensic literature suggesting cranial fracture patterns depend on impact surface shape and that fracture initiation energy is lower for more focal impacts.  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