全文获取类型
收费全文 | 10614篇 |
免费 | 312篇 |
专业分类
各国政治 | 319篇 |
工人农民 | 519篇 |
世界政治 | 645篇 |
外交国际关系 | 347篇 |
法律 | 6727篇 |
中国共产党 | 34篇 |
中国政治 | 131篇 |
政治理论 | 2065篇 |
综合类 | 139篇 |
出版年
2021年 | 65篇 |
2020年 | 154篇 |
2019年 | 145篇 |
2018年 | 220篇 |
2017年 | 256篇 |
2016年 | 294篇 |
2015年 | 234篇 |
2014年 | 237篇 |
2013年 | 929篇 |
2012年 | 252篇 |
2011年 | 297篇 |
2010年 | 221篇 |
2009年 | 291篇 |
2008年 | 345篇 |
2007年 | 363篇 |
2006年 | 342篇 |
2005年 | 314篇 |
2004年 | 299篇 |
2003年 | 248篇 |
2002年 | 246篇 |
2001年 | 357篇 |
2000年 | 332篇 |
1999年 | 266篇 |
1998年 | 164篇 |
1997年 | 119篇 |
1996年 | 146篇 |
1995年 | 123篇 |
1994年 | 136篇 |
1993年 | 130篇 |
1992年 | 202篇 |
1991年 | 252篇 |
1990年 | 217篇 |
1989年 | 202篇 |
1988年 | 224篇 |
1987年 | 202篇 |
1986年 | 221篇 |
1985年 | 196篇 |
1984年 | 164篇 |
1983年 | 157篇 |
1982年 | 103篇 |
1981年 | 123篇 |
1980年 | 104篇 |
1979年 | 105篇 |
1978年 | 90篇 |
1977年 | 78篇 |
1976年 | 67篇 |
1975年 | 66篇 |
1974年 | 68篇 |
1973年 | 79篇 |
1971年 | 52篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
Renard Sexton Rachel L. Wellhausen Michael G. Findley 《American journal of political science》2019,63(2):353-367
Dissident violence inflicts many costs on society, but some of the longest‐lasting consequences for civilians may be indirect, due to the government's response. We explore how government policy responses affect social welfare, specifically through budgetary shifts. Using subnational violence and budgeting data for Peru, we demonstrate that attacks on soldiers during the budget negotiation period drive a shift from local social services, especially health, to defense. One soldier fatality implies a 0.13 percentage point reduction in the local health budget share (2008–12). Health budget cuts due to a single soldier fatality result in 76 predicted additional infant deaths 2 years later. We show that the effect on health budgeting operates through decreases in women's use of health facilities and postnatal services. We offer evidence that Peru's coercive response indirectly harms civilians due to butter‐to‐guns budgetary shifts. Our results identify a budgetary mechanism that translates dissident violence into a deterioration in social welfare. 相似文献
942.
David S. Knight Susan Landry Tricia A. Zucker Emily C. Merz Cathy L. Guttentag Heather B. Taylor 《Journal of policy analysis and management》2019,38(4):891-917
We evaluate the cost‐effectiveness of two early childhood interventions that use instructional coaching and parent coaching as levers for improvement. The study design allows us to compare the individual effects of each intervention as well as their combined effect on student outcomes. We find that teachers receiving instructional coaching improve their use of evidence‐based instructional practices, while families receiving parent coaching show increases in numerous responsive parenting behaviors associated with positive child outcomes. Both interventions demonstrate positive impacts on students, but only parent coaching shows statistically significant effects across a range of student outcomes. Instructional coaching alone is substantially less costly and may therefore be the most cost‐effective of the three treatment conditions; however, small sample sizes limit our ability to reach definitive conclusions. Policy simulations suggest that implementing these interventions could raise the overall cost‐effectiveness of Head Start by at least 16 percent. 相似文献
943.
Studies show that women and girls consistently demonstrate higher levels of concern for the environment than men and boys. Separately, research also indicates that women officeholders pay particular attention to the issues prioritized by their female constituents. Interestingly, despite the consistency of the gender gap in attitudes to environmental issues the literature has paid scant attention to the role of women officeholders in the adoption of environmental policy. The goal of this paper was to start to address that lacuna. Using pooled cross‐sectional time series analyses of environmental standards in 18 Western parliamentary democracies (1990–2012), our initial findings indicate women officeholders are associated with the adoption of higher environmental standards. 相似文献
944.
945.
Among the more recognizable programs related to natural and sustainable food is the United States Department of Agriculture’s National Organic Program. Although the robustness of the organic food market is difficult to contest, many debate the extent to which U.S. organic policy outcomes adequately serve consumers and the organic agriculture producers they rely on. This paper engages the debate from the perspective of certified organic producers. Drawing on the results of a nationwide survey of USDA‐certified producers, we first provide a snapshot of how producers assess the environmental, consumer, and market impacts of U.S. organic food policy. We then examine the extent to which organic producers’ policy impact perceptions are associated with their alignment with an “organic ethos”—understood as producers’ commitment to core organic principles and the organic movement. The paper highlights producers’ values as perceptual filters and cognitive mechanisms that help shape producers’ policy impacts perceptions, illustrating a contributing factor to the enduring nature of organic policy debates. 相似文献
946.
L. GUBAREVA 《北京周报(英文版)》2011,54(23):47
<正>The ground was shaking.The roads were distorted.The mountains collapsed,raining down stones.A devastating earthquake ravaged Sichuan Province on May 12,2008,followed by more than 30,000 aftershocks. 相似文献
947.
Journal of Family Violence - This article explores the use of cognitive interviewing among one sensitive population, survivors of crime, and shares lessons learned from a cognitive interviewing... 相似文献
948.
Janet L. Lauritsen 《犯罪学》2023,61(2):187-203
Criminology lacks sufficient data for many types of crime that are of great concern to society. This lack of data poses significant problems for determining whether resources are adequate for responding to these crimes or whether programmatic, legislative, or target-hardening efforts to prevent or reduce their occurrence are effective. Inadequate data about crime also produces a selective and incomplete narrative about crime that makes it easier for political and vested interests to exploit public concerns about crime for their own ends. In this address, I discuss what is needed to resolve these gaps and the ways in which criminologists can support a significant expansion of the crime data infrastructure. Such work is necessary to help ensure the future relevance of criminological research. 相似文献
949.
Why are hate crime cases so rarely prosecuted? Most states and the federal government have hate crime laws on their books, yet available data indicate few prosecutions in most jurisdictions. Drawing on case files and interviews with police and prosecutors in one jurisdiction, three institutional impediments to hate crime prosecution are identified: evidentiary inflation, by which law enforcement uses a higher burden of proof than what is required by statute; loose coupling between police departments and prosecutors' offices; and cultural distance between law enforcement and victims. Findings also reveal that advocacy groups and media can successfully increase the visibility of cases and draw the attention of prosecutors. The findings align with aspects of legal endogeneity theory and enhance our understanding of the role of organizations in constructing the meaning of law. The results also help explain why some laws are rarely enforced, even when they have support from key personnel in an organization. 相似文献
950.