全文获取类型
收费全文 | 3550篇 |
免费 | 96篇 |
专业分类
各国政治 | 253篇 |
工人农民 | 134篇 |
世界政治 | 319篇 |
外交国际关系 | 196篇 |
法律 | 1511篇 |
中国政治 | 15篇 |
政治理论 | 1176篇 |
综合类 | 42篇 |
出版年
2020年 | 50篇 |
2019年 | 51篇 |
2018年 | 69篇 |
2017年 | 76篇 |
2016年 | 101篇 |
2015年 | 59篇 |
2014年 | 80篇 |
2013年 | 590篇 |
2012年 | 73篇 |
2011年 | 97篇 |
2010年 | 92篇 |
2009年 | 90篇 |
2008年 | 107篇 |
2007年 | 116篇 |
2006年 | 99篇 |
2005年 | 97篇 |
2004年 | 102篇 |
2003年 | 109篇 |
2002年 | 154篇 |
2001年 | 81篇 |
2000年 | 79篇 |
1999年 | 85篇 |
1998年 | 64篇 |
1997年 | 78篇 |
1996年 | 57篇 |
1995年 | 46篇 |
1994年 | 39篇 |
1993年 | 49篇 |
1992年 | 54篇 |
1991年 | 59篇 |
1990年 | 43篇 |
1989年 | 54篇 |
1988年 | 44篇 |
1987年 | 43篇 |
1986年 | 55篇 |
1985年 | 47篇 |
1984年 | 30篇 |
1983年 | 55篇 |
1982年 | 45篇 |
1981年 | 35篇 |
1980年 | 32篇 |
1979年 | 28篇 |
1978年 | 24篇 |
1977年 | 22篇 |
1976年 | 26篇 |
1975年 | 19篇 |
1974年 | 28篇 |
1973年 | 13篇 |
1972年 | 13篇 |
1971年 | 14篇 |
排序方式: 共有3646条查询结果,搜索用时 15 毫秒
981.
Richard Vernon 《Political studies》2007,55(4):865-879
In a recent two-part article in this journal, John Horton offers reasons to reject 'philosophical anarchism', and claims that rejecting that view should lead us to an 'associative' account of political obligations. This article argues for a different conclusion. The claim that local obligations are irreducible or independent is vulnerable to critique, and does not provide a compelling account of moral conflict. Rejecting philosophical anarchism should lead us to a version of moral universalism that can find a place for local attachment. 相似文献
982.
983.
984.
Household‐level interview data from a probability sample survey conducted in the northeastern Ecuadorian Amazon in 1990 are used to examine the determinants of income and assets among migrant farmers in the agricultural frontier. Multivariate analysis indicates that size of plot owned, proximity to markets, duration of residence, quality of soil, receipt of technical assistance, off‐farm employment and initial wealth positively influence current household income and wealth. More land in cattle pasture is also associated with higher status. Some settlers are prospering relative to others despite variable soil quality, unsustainable land uses, geographic isolation, apparent scarcity of labor, and lack of supportive infrastructure. The article closes with a discussion of implications for policies to assist small farmers, with some consideration of the potential ecological consequences of farmers’ activities. 相似文献
985.
Richard Kearney 《国际公共行政管理杂志》2013,36(6):781-791
Numerous problems confront federal labor management relations as we approach the year 2000. The legal structure, Title VII of the CSRA of 1978, is under heavy fire from the unions and other quarters. The perennial federal fiscal crisis has regularized retrenchment strategies and damaged the economic standing of unions and their members. The highly restricted scope of bargaining with most of the federal sector and the continuing push for contracting out also grieves the unions. Yet change comes slowly, if at all. This symposium addresses the calls for reform of the legal framework for federal labor relations. 相似文献
986.
987.
988.
Research Summary Police officials across the United States are increasingly relying on place-based approaches for crime prevention. In this article, we examine the Safer Cities Initiative, a widely publicized place-based policing intervention implemented in Los Angeles's “Skid Row” that focused on crime and disorder associated with homeless encampments. Crime reduction was the goal. The police division in which the program was undertaken provides 8 years of time-series data serving as the observations for the treatment condition. Four adjacent police divisions in which the program was not undertaken provide 8 years of time-series data serving as the observations for the comparison condition. The data are analyzed using a generalized additive model. On balance, we find that this place-based intervention is associated with meaningful reductions in violent, property, and nuisance street crimes. There is no evidence of crime displacement. Policy Implications This study provides further evidence that geographically targeted police interventions can lead to significant crime prevention benefits, with no evidence that crime is simply displaced to other areas. Criminologists and the media have given the Los Angeles Police Department (LAPD) little credit for major reductions in crime that have occurred during the past 5 years following a number of major policy reforms. We suggest that researchers should look more closely at the targeted interventions the LAPD has undertaken for evidence-based examples of effective policing. Importantly, this work suggests that crime associated with homeless encampments can be meaningfully reduced with targeted police actions. However, law enforcement actions do not address the roots of homelessness nor most of its consequences. Getting tough on the homeless should not be confused with policies or programs that respond fundamentally to the social and personal problems that homelessness presents. 相似文献
989.
990.