全文获取类型
收费全文 | 452篇 |
免费 | 7篇 |
专业分类
各国政治 | 22篇 |
工人农民 | 9篇 |
世界政治 | 72篇 |
外交国际关系 | 16篇 |
法律 | 168篇 |
中国政治 | 2篇 |
政治理论 | 167篇 |
综合类 | 3篇 |
出版年
2020年 | 5篇 |
2019年 | 3篇 |
2018年 | 3篇 |
2017年 | 9篇 |
2016年 | 7篇 |
2015年 | 6篇 |
2014年 | 15篇 |
2013年 | 67篇 |
2012年 | 16篇 |
2011年 | 8篇 |
2010年 | 8篇 |
2009年 | 8篇 |
2008年 | 9篇 |
2007年 | 13篇 |
2006年 | 9篇 |
2005年 | 11篇 |
2004年 | 6篇 |
2003年 | 9篇 |
2002年 | 12篇 |
2001年 | 10篇 |
2000年 | 11篇 |
1999年 | 4篇 |
1998年 | 6篇 |
1997年 | 5篇 |
1996年 | 4篇 |
1995年 | 13篇 |
1994年 | 12篇 |
1993年 | 16篇 |
1992年 | 10篇 |
1991年 | 10篇 |
1990年 | 5篇 |
1989年 | 9篇 |
1988年 | 12篇 |
1987年 | 11篇 |
1986年 | 6篇 |
1985年 | 11篇 |
1984年 | 8篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 6篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1976年 | 7篇 |
1975年 | 9篇 |
1974年 | 4篇 |
1973年 | 5篇 |
1971年 | 3篇 |
1970年 | 6篇 |
1969年 | 5篇 |
1965年 | 2篇 |
排序方式: 共有459条查询结果,搜索用时 15 毫秒
441.
In a middle-class, urban-clinic sample of 275, mostly Caucasian, adolescent mothers and their partners living in Utah, three groups were identified and their psychosocial characteristics were compared. Couples married at the time of conception (N=22) enjoyed more positive responses from prospective grandparents and earned more than couples not married at the time of conception. On the other hand, these initially married youths were much more likely to be high-school dropouts, which suggests limits in their lifetime earning capacities, and they were not more likely to identify one another as sources of emotional support. Couples who married between conception and delivery (N=110) reported that prospective grandparents responded less favorably to news of the pregnancy than did relatives of the initially married couples, but while their current salaries were lower, they were much more likely to be continuing with their education. Those who married after conception also had fewer antisocial and conduct disorders than young men and women who chose to continue in a dating relationship (N=29). Overall, the couples who married after conception appeared to face less severe problems than either the initially-married couples or the steady daters.This research was supported by grant number APR 000922-02-0 from the Office of Adolescent Pregnancy Programs to Drs. Elster and Lamb.where he and Dr. Lamb conduct research on pregnant teens, teenaged parents, and their children. Ms. Peters and Mr. Kahn are graduate students in School of Education at the University of Utah, while Ms. Tavare is a biostatistician at the University of Utah Medical Center. 相似文献
442.
443.
The blood morphine concentrations in cases of heroin-associated fatalities can vary considerably. Currently, a free-morphine concentration of > or = 100 ng/ml in blood is generally considered as potentially fatal. Moreover, it is a common observation that fatal cases of heroin-intoxication with blood morphine concentrations lower than 100 ng/ml occur. This poses the question of how the fatal cases with low blood morphine concentrations can be explained. In the study described here, 62 cases of morphine only intoxications were examined. The fatal cases were divided into two groups according to the free morphine concentrations measured in the blood of the heart (group I: free morphine concentration < 100 ng/ml, n = 21 cases; group II: free morphine concentration > or = 100 ng/ml, n = 41 cases). The two groups were compared as to circumstances of death, as well as to autopsy findings and histopathologic alterations. Overall, infections of the respiratory tract occurred significantly more often in group I (lower morphine concentrations) than in group II. In a second step, the group I cases were analyzed individually to get detailed information on the cause of death. In 19 of the 21 cases the authors could find a plausible explanation for death in combination with low free morphine concentrations in the blood. 相似文献
444.
Paul J. Becker Bryan Byers Arthur Jipson 《International Review of Law, Computers & Technology》2000,14(1):33-41
This essay reviews the debate over what constitutes hate speech and whether or not such speech is protected by the American First Amendment. First, the concept of white racialism and white supremacy is defined and illustrated. Then after a brief discussion of the legal debate, the nature and problematic definition(s) of hate speech is presented. The unique speech environment of the internet is reviewed alongside attempts to limit and censor topics available on the internet. The arguments for and against restricting first amendment protection are discussed, with a focus on Michael Israel's five criteria for withdrawing first amendment protections. The work concludes with a discussion of the difficulty in constraining discourse on the internet. 相似文献
445.
Raymond Arthur 《The Modern law review》2016,79(1):102-121
The Criminal Justice and Courts Act 2015 empowers staff in secure colleges to subject young people in custody to dangerous force for the purpose of ensuring ‘good order and discipline’. The use of force to restrain young people in custody can cause serious physical injury, profound psychological damage and has contributed to the custodial deaths of two young people in 2004. Despite these dangers, in most youth custodial establishments the use of force remains high and has been increasing. The 2015 Act will further legitimise the use of coercive violence against vulnerable children, consequently sustaining the power imbalance between children and adults, diminishing the special status of childhood and violating the child's human rights. This comment considers the effectiveness of using force and argues that the deliberate infliction of pain should only be used as a last resort and exclusively to prevent harm to the child or others. 相似文献
446.
447.
448.
449.
450.
Arthur Benz 《German politics》2015,24(1):8-25
Elections shape the type of democracy. However, rules of elections, election behaviour, and consequences of elections are also affected by the institutions and patterns of democracy. In federal systems, elected governments exert divided powers or share powers, with significant consequences for the way democracy works. The effects of federal organisation on democracy are, however, unclear. Whereas research on federalism tends to suggest that both forms are complementary and mutually supportive, research on democracy points out negative implications of multilevel structures and interlocking politics. This article presents an analytical perspective and attempts to clarify under what conditions federalism and democracy are compatible or in conflict. Understanding these relations is essential to assess the relevance and effects of elections in federalism. In a comparative perspective, it also sheds light on the particular features of democracy and federalism in Germany. 相似文献