全文获取类型
收费全文 | 5781篇 |
免费 | 188篇 |
专业分类
各国政治 | 303篇 |
工人农民 | 211篇 |
世界政治 | 472篇 |
外交国际关系 | 198篇 |
法律 | 3400篇 |
中国共产党 | 1篇 |
中国政治 | 42篇 |
政治理论 | 1300篇 |
综合类 | 42篇 |
出版年
2020年 | 71篇 |
2019年 | 90篇 |
2018年 | 118篇 |
2017年 | 134篇 |
2016年 | 128篇 |
2015年 | 117篇 |
2014年 | 121篇 |
2013年 | 632篇 |
2012年 | 165篇 |
2011年 | 142篇 |
2010年 | 129篇 |
2009年 | 133篇 |
2008年 | 158篇 |
2007年 | 167篇 |
2006年 | 150篇 |
2005年 | 143篇 |
2004年 | 151篇 |
2003年 | 145篇 |
2002年 | 144篇 |
2001年 | 198篇 |
2000年 | 213篇 |
1999年 | 157篇 |
1998年 | 82篇 |
1997年 | 76篇 |
1996年 | 56篇 |
1995年 | 73篇 |
1994年 | 61篇 |
1993年 | 61篇 |
1992年 | 105篇 |
1991年 | 98篇 |
1990年 | 120篇 |
1989年 | 97篇 |
1988年 | 94篇 |
1987年 | 104篇 |
1986年 | 116篇 |
1985年 | 122篇 |
1984年 | 87篇 |
1983年 | 87篇 |
1982年 | 61篇 |
1981年 | 58篇 |
1980年 | 57篇 |
1979年 | 61篇 |
1978年 | 64篇 |
1976年 | 40篇 |
1975年 | 57篇 |
1974年 | 67篇 |
1973年 | 60篇 |
1972年 | 43篇 |
1970年 | 38篇 |
1969年 | 42篇 |
排序方式: 共有5969条查询结果,搜索用时 15 毫秒
151.
152.
Sophia K. Chiu M.D. M.P.H. Jessica F. Li M.S.P.H. Kurt B. Nolte M.D. 《Journal of forensic sciences》2020,65(4):1324-1327
Recent increases in deaths in the United States from synthetic opioids such as fentanyl and fentanyl analogues (fentanyls) have raised concerns about possible occupational exposures to these potent agents. Medicolegal death investigators and autopsy suite staff might perform job tasks involving exposure to fentanyls. The potential for exposure to fentanyls among medicolegal death investigators and autopsy technicians at a state medical examiner's office was evaluated through review of caseload characteristics, injury and illness logs, and procedures and policies and discussions with management and employee representatives. The evaluation showed that this medical examiner's office had low potential for work-related exposure to fentanyls; its standard operating procedures and personal protective equipment requirements should reduce the potential for occupational exposure. Medicolegal death investigation agencies can develop and implement guidance to control exposures and provide workforce education and training to reduce the potential for work-related exposure to fentanyls. 相似文献
153.
Sharon F. Lambert Keith C. Herman Mia Smith Bynum Nicholas S. Ialongo 《Journal of youth and adolescence》2009,38(4):519-531
Experiences with racism are a common occurrence for African American youth and may result in negative self perceptions relevant
for the experience of depressive symptoms. This study examined the longitudinal association between perceptions of racism
and depressive symptoms, and whether perceived academic or social control mediated this association, in a community epidemiologically-defined
sample of urban African American adolescents (N = 500; 46.4% female). Structural equation modeling revealed that experiences with racism were associated with low perceived
academic control, which in turn was associated with increased depressive symptoms. Findings suggest that experiences with
racism can have long lasting effects for African American youth’s depressive symptoms, and highlight the detrimental effects
of experiences with racism for perceptions of control in the academic domain. Implications for intervention are discussed.
相似文献
Sharon F. LambertEmail: |
154.
A heated debate developed in South Africa as to the meaning of ‘deliberative democracy’. This debate is fanned by the claims of ‘traditional leaders’ that their ways of village-level deliberation and consensus-oriented decision-making are not only a superior process for the African continent as it evolves from pre-colonial tradition, but that it represents a form of democracy that is more authentic than the Western version. Proponents suggest that traditional ways of deliberation are making a come-back because imported Western models of democracy that focus on the state and state institutions miss the fact that in African societies state institutions are often seen as illegitimate or simply absent from people's daily lives. In other words, traditional leadership structures are more appropriate to African contexts than their Western rivals. Critics suggest that traditional leaders, far from being authentic democrats, are power-hungry patriarchs and authoritarians attempting to both re-invent their political, social and economic power (frequently acquired under colonial and apartheid rule) and re-assert their control over local-level resources at the expense of the larger community. In this view, the concept of deliberative democracy is being misused as a legitimating device for a politics of patriarchy and hierarchy, which is the opposite of the meaning of the term in the European and US sense. This article attempts to contextualise this debate and show how the efforts by traditional leaders to capture an intermediary position between rural populations and the state is fraught with conflicts and contradictions when it comes to forming a democratic state and society in post-apartheid South Africa. 相似文献
155.
This essay reviews David Pyrooz and James Densley’s “On Public Protest, Violence, and Street Gangs” and raises new questions about the ways in which Antifa is similar to and different from social movements; the processes by which “factions within Antifa” become gangs; and the dynamic nature of relationships and interactions between and among violent and non-violent segments. It concludes with a note about the everchanging nature of social life and importance of flexibility in the design and execution of research in capturing this reality. 相似文献
156.
What Levels of Racial Diversity Can Be Achieved with Socioeconomic‐Based Affirmative Action? Evidence from a Simulation Model 下载免费PDF全文
Sean F. Reardon Rachel Baker Matt Kasman Daniel Klasik Joseph B. Townsend 《Journal of policy analysis and management》2018,37(3):630-657
This paper investigates to what extent socioeconomic status (SES)‐based affirmative action in college admissions can produce racial diversity. Using simulation models, we investigate the racial and socioeconomic distribution of students among colleges under the use of race‐ or SES‐based affirmative action policies, or targeted, race‐based recruitment policies. We find, first, that neither SES‐based affirmative action nor race‐targeted recruiting on their own produce levels of racial diversity achieved by race‐based affirmative action. However, the two policies in combination, although likely expensive, may yield racial diversity comparable to race‐based affirmative action. Second, the use of affirmative action policies by some colleges reduces the diversity of similar‐quality colleges without such policies. Third, the combination of SES‐based affirmative action and race recruiting results in fewer academically‐overmatched Black and Hispanic students than under race‐based affirmative action, but the schools that use both also see a reduction in the academic achievement of enrolled students. 相似文献
157.
Attitudes towards highly skilled and low‐skilled immigration in Europe: A survey experiment in 15 European countries 下载免费PDF全文
ELIAS NAUMANN LUKAS F. STOETZER GIUSEPPE PIETRANTUONO 《European Journal of Political Research》2018,57(4):1009-1030
To what extent do economic concerns drive anti‐migrant attitudes? Key theoretical arguments extract two central motives: increased labour market competition and the fiscal burden linked to the influx of migrants. This article provides new evidence regarding the impact of material self‐interest on attitudes towards immigrants. It reports the results of a survey experiment embedded in representative surveys in 15 European countries before and after the European refugee crisis in 2014. As anticipated by the fiscal burden argument, it is found that rich natives prefer highly skilled over low‐skilled migration more than low‐income respondents do. Moreover, the study shows that these tax concerns among the wealthy are stronger if fiscal exposure to migration is high. No support is found for the labour market competition argument predicting that natives will be most opposed to migrants with similar skills. The results suggest that highly skilled migrants are preferred over low‐skilled migrants irrespective of natives’ skill levels. 相似文献
158.
159.
Edward Newman 《Global Society》2018,32(2):198-209
This article explores the prospects for the EU’s role as a global leader in a transitional international order, based on the assumption that multilateral principles will remain at the heart of global governance. It focuses in particular upon the EU’s 2016 Global Strategy in the context of three principal trends and challenges for global governance: political and normative challenges, legitimacy challenges, and systemic challenges. It argues that the prospects for the EU’s global role are limited as long as the EU remains committed to traditional forms and norms of global governance, because these are increasingly out of touch with the emerging international order, and the nature of contemporary collective action challenges. 相似文献
160.