全文获取类型
收费全文 | 3580篇 |
免费 | 55篇 |
专业分类
各国政治 | 97篇 |
工人农民 | 93篇 |
世界政治 | 145篇 |
外交国际关系 | 95篇 |
法律 | 2800篇 |
中国政治 | 17篇 |
政治理论 | 351篇 |
综合类 | 37篇 |
出版年
2020年 | 33篇 |
2019年 | 34篇 |
2018年 | 54篇 |
2017年 | 42篇 |
2016年 | 63篇 |
2015年 | 28篇 |
2014年 | 51篇 |
2013年 | 245篇 |
2012年 | 91篇 |
2011年 | 135篇 |
2010年 | 81篇 |
2009年 | 61篇 |
2008年 | 112篇 |
2007年 | 130篇 |
2006年 | 111篇 |
2005年 | 91篇 |
2004年 | 129篇 |
2003年 | 119篇 |
2002年 | 114篇 |
2001年 | 154篇 |
2000年 | 138篇 |
1999年 | 104篇 |
1998年 | 20篇 |
1995年 | 17篇 |
1993年 | 27篇 |
1992年 | 66篇 |
1991年 | 88篇 |
1990年 | 91篇 |
1989年 | 99篇 |
1988年 | 104篇 |
1987年 | 94篇 |
1986年 | 82篇 |
1985年 | 86篇 |
1984年 | 69篇 |
1983年 | 62篇 |
1982年 | 24篇 |
1981年 | 20篇 |
1979年 | 30篇 |
1978年 | 35篇 |
1977年 | 23篇 |
1976年 | 27篇 |
1975年 | 31篇 |
1974年 | 40篇 |
1973年 | 40篇 |
1972年 | 36篇 |
1971年 | 40篇 |
1970年 | 40篇 |
1969年 | 37篇 |
1968年 | 28篇 |
1967年 | 18篇 |
排序方式: 共有3635条查询结果,搜索用时 0 毫秒
61.
62.
63.
AbstractScalability can be understood as the ability to expand without changing. Yet, expanding an intervention to a global scale, we suggest, is a significant and difficult accomplishment. In this paper we propose to explore the kind of evidential exigencies that this accomplishment involves. To do so, we focus on the field of global health and examine how child immunization against the pneumococcus bacterium has been scaled up in low-income countries. The paper first attends to initial epidemiological scrutiny that revealed the existence of a large-scale public health problem and the possibility of an expandable solution (vaccination). It then describes the set-up of a funding arrangement using overseas aid to purchase vaccine doses manufactured by pharmaceutical companies, before paying attention to various frictions that affect the widespread use of pneumococcal vaccines. In these different moments through which scalability is accomplished, always partially and temporarily, we show that a dual activity can be witnessed, a pivoting between referential work and forward projection. To conclude, we suggest that scalability is more usefully approached as a form of expansion that is always attentive to the possibilities of change. 相似文献
64.
Véra Ehrenstein 《Economy and Society》2018,47(1):162-186
AbstractThis paper explores an example of global politics in action by attending to the modalities and outcomes of United Nations negotiations on global warming. More precisely, the paper ethnographically traces how the capacity of tropical forests to act as carbon sinks is turned into a matter of global concern. The focus is on a negotiated policy called Reducing Emissions from Deforestation and forest Degradation (REDD+) and its anchoring in the Democratic Republic of the Congo, whose territory contains the second largest area of rainforest after Brazil. The paper discusses the importance of the promissory in climate actions, the multivalence of what is at stake and the porosity and resilience of national demarcation. To do so, it identifies three moments and sites of geopolitical re-composition: the formulation of international consensus, the work of preparatory agents and the quest for metrological inclusiveness. These moments and sites point to the theatricality and semi-secrecy of United Nations negotiations, the mobilizing activities of expatriate consultants hired with overseas aid funding and the unstable evidential grounds on which emission reduction efforts are based. The paper suggests that, through this series of processes, the carbon stored by tropical forests becomes a matter of global exigency. 相似文献
65.
66.
Jason M. Newcomer Patti J. Clark Dixie K. Button Linda V. Weiland 《Journal of Gender Studies》2018,27(5):509-521
Certified aircraft mechanics represent the largest gender-based demographic disparity in aviation with a 49-to-1 male-to-female ratio. Recent research into women’s perspective on the aircraft mechanic career field revealed that a large majority of women felt unsure or negatively about their potential promotion opportunities and social acceptance. The purpose of this follow-on mixed-methods concurrent triangulation study was to explore the perspectives of men regarding the aforementioned topics to see if they differ from previously published research on women perceptions. A total of 587 men and 431 women completed an eight-question survey containing 5-point Likert-type and open-ended questions. The quantitative comparison consisted of the total 1018 responses, while only the survey responses from the 587 men were analysed for correlations and qualitative codes. Results indicated that there was a significant difference between the perceptions of men from those of the women regarding work environment safety and social acceptance. Additional correlation analysis revealed social acceptance to be a key variable when predicting career appropriateness, advancement opportunity and work environment safety. The 587 qualitative responses yielded results that differed from those of women, citing an assumption that women have the same advancement opportunities or be as socially accepted as men entering the field. 相似文献
67.
Document examiners sometimes eliminate writers on the basis of differences which are given too much weight. This article is an attempt to explain some conditions whereby differences in the writing of one individual are misinterpreted as significant differences, when they are actually caused by conditions which are unknown to the examiner. 相似文献
68.
A method for the routine profiling of illicit heroin samples received in casework has been developed which depends on simple and straightforward sample pretreatment, followed by gas chromatography on a capillary column using flame-ionization detection. The factors affecting the choice of each aspect of the procedure are discussed, as are the statistical data for sampling and the chromatography. Components of illicit heroin derived from opium and other adulterants have been identified. The significance of data from samples examined in 1986 is discussed. 相似文献
69.
70.
AbstractWe contribute to the debate on the spatial allocation of infrastructure investments by examining where these investments generate the highest economic return (‘spatial efficiency’), and identifying trade-offs when infrastructure coverage is made more equitable across regions (‘spatial equity’). We estimate models of firm location choice in Uganda, drawing on insights from the new economic geography literature. The main findings show that manufacturing firms gain from being in areas that offer a diverse mix of economic activities. Public infrastructure investments in other locations are likely to attract fewer private investors, and will pose a spatial efficiency–equity trade-off. 相似文献