全文获取类型
收费全文 | 1048篇 |
免费 | 30篇 |
专业分类
各国政治 | 23篇 |
工人农民 | 35篇 |
世界政治 | 35篇 |
外交国际关系 | 461篇 |
法律 | 377篇 |
中国共产党 | 1篇 |
中国政治 | 2篇 |
政治理论 | 133篇 |
综合类 | 11篇 |
出版年
2022年 | 2篇 |
2021年 | 2篇 |
2020年 | 11篇 |
2019年 | 10篇 |
2018年 | 9篇 |
2017年 | 15篇 |
2016年 | 17篇 |
2015年 | 7篇 |
2014年 | 48篇 |
2013年 | 135篇 |
2012年 | 66篇 |
2011年 | 102篇 |
2010年 | 65篇 |
2009年 | 82篇 |
2008年 | 55篇 |
2007年 | 52篇 |
2006年 | 51篇 |
2005年 | 55篇 |
2004年 | 62篇 |
2003年 | 56篇 |
2002年 | 57篇 |
2001年 | 10篇 |
2000年 | 5篇 |
1999年 | 8篇 |
1998年 | 6篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 5篇 |
1994年 | 4篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 3篇 |
1989年 | 4篇 |
1988年 | 6篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 9篇 |
1983年 | 3篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1974年 | 2篇 |
1971年 | 3篇 |
1970年 | 2篇 |
1969年 | 2篇 |
排序方式: 共有1078条查询结果,搜索用时 31 毫秒
81.
82.
83.
84.
Deborah D. Avant Author Vitae 《Orbis》2006,50(2):327-342
Images of private forces in Iraq—killed and mutilated in Fallujah, implicated in prisoner abuse at Abu Ghraib, and shooting up civilian vehicles—have provided a dramatic illustration of the role private security companies (pscs) now play in U.S. military operations. Though the United States’ use of contractors on the battlefield is not entirely new, the increased number of contractors deployed and the use of private security forces to perform an escalating number of tasks has created a new environment that poses important trade-offs for U.S. policy and military effectiveness and for U.S. relations with other states. This article outlines the history of U.S. contractors on the battlefield, compares that with the use of private security in Iraq, discusses the benefits and risks associated with their use, and proposes some trade-offs that decision-makers in the United States should consider while contemplating their use in the future. 相似文献
85.
The present 4-year follow-up study involves 56 mothers who were evaluated by social agencies as being abusive and neglectful or at high risk for child abuse and neglect. The aim of the study is to analyze the relationship between psychosocial risk factors (relating to the history and current situation of the mothers) that were present at the time the families were initially recruited and the fact that some of the mothers continue to show a high potential for child abuse and neglect (chronic abuse and neglect), whereas others were able to overcome the problem (transitory abuse and neglect). Results indicate that the following variables are particularly associated with situations involving chronic problems of abuse and neglect: initial level of severity of potential for abuse and neglect; dual-parent status; a large number of children at the time of intervention (3.13 times more risk of chronicity for large families); the fact that as a child the mother herself had been placed in a foster home (3.7 times more risk); that she had been sexually abused (3.5 times more risk); and that as an adolescent she had run away from home (3.02 times more risk). Our results indicate that mothers who have a combination of more than eight risk factors are four times more likely to be in the chronic group. 相似文献
86.
87.
88.
89.
90.