全文获取类型
收费全文 | 737篇 |
免费 | 21篇 |
专业分类
各国政治 | 39篇 |
工人农民 | 48篇 |
世界政治 | 116篇 |
外交国际关系 | 47篇 |
法律 | 340篇 |
中国政治 | 3篇 |
政治理论 | 161篇 |
综合类 | 4篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 8篇 |
2020年 | 13篇 |
2019年 | 26篇 |
2018年 | 31篇 |
2017年 | 40篇 |
2016年 | 34篇 |
2015年 | 22篇 |
2014年 | 18篇 |
2013年 | 131篇 |
2012年 | 22篇 |
2011年 | 26篇 |
2010年 | 16篇 |
2009年 | 16篇 |
2008年 | 23篇 |
2007年 | 25篇 |
2006年 | 30篇 |
2005年 | 26篇 |
2004年 | 14篇 |
2003年 | 21篇 |
2002年 | 22篇 |
2001年 | 14篇 |
2000年 | 13篇 |
1999年 | 9篇 |
1998年 | 16篇 |
1997年 | 13篇 |
1996年 | 6篇 |
1995年 | 8篇 |
1994年 | 7篇 |
1993年 | 10篇 |
1992年 | 10篇 |
1991年 | 4篇 |
1990年 | 4篇 |
1989年 | 6篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1982年 | 12篇 |
1981年 | 5篇 |
1980年 | 4篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1967年 | 2篇 |
1964年 | 1篇 |
排序方式: 共有758条查询结果,搜索用时 15 毫秒
661.
662.
Van Vugt E Gibbs J Stams GJ Bijleveld C Hendriks J van der Laan P 《International journal of offender therapy and comparative criminology》2011,55(8):1234-1250
A meta-analysis of 19 studies (N = 15,992 offenders) showed a significant inverse relation between more mature moral development and recidivism. Moderator analyses revealed a larger effect size for moral cognition (r = .20) than for moral emotion (r = .11). Effect sizes for production measures (r = .57) were much larger than for recognition measures (r = .16) and unstructured (clinical) judgment (r = .10). Larger effect sizes were found for female delinquents (r = .32) than for male delinquents (r = .21). Only small differences in effect sizes were found between juvenile delinquents (r = .10) and adult delinquents (r = .16). Finally, self-report measures of recidivism revealed much larger effect sizes (r = .32) than official reports of recidivism (r = .09). The discussion focuses on the theoretical and practical meaning of the magnitude of the effect size for the relation between moral development and recidivism. 相似文献
663.
664.
While there has been much emphasis over the last decade on the science of nanotechnology and on the implications and risks
of potential applications, it is now timely to increase attention to the emerging dynamics of nanotechnology commercialization.
This paper examines, from a global perspective, where and how corporations are entering into nanotechnology innovation. The
paper tests the proposition that a significant shift has occurred in recent years in the orientation of corporate nanotechnology
activities—from research discovery to patented applications. It also examines the extent to which the character and structure
of corporate nanotechnology activity by country initially reflects national innovation system characteristics and prior public
research funding inputs in the stage when discovery is most emphasized. The results indicate that national innovation systems
characteristics are significant factors in the commercialization shift of nanotechnology and highlight the importance of innovation
system policy factors. We also observe the influence of cross-border international invention linkages, suggesting that national
innovation policies also need to be open and international in orientation. 相似文献
665.
666.
Axel Marx Jan Wouters Woosik Moon Yeongseop Rhee Sunhee Park 《Asia Europe Journal》2014,12(3):231-250
The paper provides an overview of the most important results of a project on EU–Korea economic and regulatory relations funded by the European Commission. The paper first outlines the emergence and development of EU–Korea relations. In the second part, the paper presents the main findings clustered in three thematic areas. A first thematic area focuses on a discussion of the EU–Korea Free Trade Agreement. The second cluster analyzes EU–Korea cooperation on regulatory policies with a main focus on cooperation in the policy areas of security (arms trade and control), chemical regulation, environmental regulation, education, development cooperation and industrial policy. The third part focuses on EU–Korea cooperation concerning regional and international issues. In the third part, the paper presents the main recommendations which were formulated on the basis of the project. 相似文献
667.
Jan Erk 《Regional & Federal Studies》2014,24(5):535-552
AbstractThe 1990s were marked by democratic reforms throughout Sub-Saharan Africa. This went in tandem with decentralization reforms which either created or strengthened subnational levels of government. More than twenty years later it seems everywhere to the south of the Sahara there is a gap between the institutional/constitutional blueprints introducing the reforms and the facts on the ground. Understanding and explaining this gap in the workings of federalism and decentralization is important to both theorists and practitioners. This article proposes five benchmarks in order to map out the evolutionary patterns of the last two decades: a) symmetrical recentralization; b) differentiated performance; c) legitimizing traditional authority structures and indigenous conflict resolution; d) politicization of local conflicts over land, water, and other natural resources; and e) federal extinction. 相似文献
668.
Kalina J 《Journal of forensic sciences》2012,57(3):691-698
Image analysis methods commonly used in forensic anthropology do not have desirable robustness properties, which can be ensured by robust statistical methods. In this paper, the face localization in images is carried out by detecting symmetric areas in the images. Symmetry is measured between two neighboring rectangular areas in the images using a new robust correlation coefficient, which down-weights regions in the face violating the symmetry. Raw images of faces without usual preliminary transformations are considered. The robust correlation coefficient based on the least weighted squares regression yields very promising results also in the localization of such faces, which are not entirely symmetric. Standard methods of statistical machine learning are applied for comparison. The robust correlation analysis can be applicable to other problems of forensic anthropology. 相似文献
669.
The detection of autochthonous aquatic bacteria in tissue samples from drowning cases is increasingly considered as an alternative approach to assist the medico-legal diagnosis of death by drowning. Bacteria belonging to the genus Aeromonas may be suitable candidates for this application as they are ubiquitous in natural aquatic environments but are generally not part of the human microbiota. The research aims of this study were (i) to develop a sensitive, specific and rapid screening and confirmation method for Aeromonas species in tissue samples and (ii) to evaluate aseptic sternal puncture as a post-mortem sample technique and bone marrow as an alternative matrix to provide evidence of death by drowning. The presence of Aeromonas in tissue samples was verified by cultivation using the selective media Ampicillin Dextrin Agar (ADA) and Ryan's Aeromonas Medium. The use of ADA medium was found most optimal for the sensitive, inexpensive and quick detection of aeromonads in human tissue samples. Positive culture plates were confirmed by harvesting all colonies for DNA extraction and subsequent PCR amplification using Aeromonas genus-specific primers. Aeromonads were detected in lung swab, blood and bone marrow of drowned bodies (n=3), but were negative in these three matrices for all negative controls (n=90) tested. Bone marrow proved to be a suitable alternative matrix and can be sampled post-mortem by an aseptic sternal puncture. In conclusion, this study confirms previous indications that aeromonads in cultures from blood of water bodies can be considered a potential marker for drowning. Given the fact that the number of immersed bodies (drowned and non-drowned) included in this study is statistically not significant, however, more tissue samples need to be investigated to confirm the validity of these methods to aid the diagnosis of death by wet drowning. 相似文献
670.