全文获取类型
收费全文 | 1173篇 |
免费 | 39篇 |
专业分类
各国政治 | 79篇 |
工人农民 | 70篇 |
世界政治 | 103篇 |
外交国际关系 | 63篇 |
法律 | 649篇 |
中国政治 | 13篇 |
政治理论 | 234篇 |
综合类 | 1篇 |
出版年
2023年 | 13篇 |
2022年 | 12篇 |
2021年 | 23篇 |
2020年 | 23篇 |
2019年 | 36篇 |
2018年 | 54篇 |
2017年 | 49篇 |
2016年 | 55篇 |
2015年 | 26篇 |
2014年 | 43篇 |
2013年 | 155篇 |
2012年 | 46篇 |
2011年 | 47篇 |
2010年 | 25篇 |
2009年 | 23篇 |
2008年 | 28篇 |
2007年 | 24篇 |
2006年 | 39篇 |
2005年 | 41篇 |
2004年 | 48篇 |
2003年 | 37篇 |
2002年 | 20篇 |
2001年 | 65篇 |
2000年 | 39篇 |
1999年 | 46篇 |
1998年 | 19篇 |
1996年 | 4篇 |
1995年 | 5篇 |
1994年 | 9篇 |
1993年 | 10篇 |
1992年 | 12篇 |
1991年 | 7篇 |
1990年 | 16篇 |
1989年 | 8篇 |
1988年 | 11篇 |
1987年 | 4篇 |
1986年 | 6篇 |
1985年 | 9篇 |
1984年 | 6篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1978年 | 8篇 |
1976年 | 5篇 |
1972年 | 4篇 |
1967年 | 7篇 |
1966年 | 3篇 |
1965年 | 3篇 |
排序方式: 共有1212条查询结果,搜索用时 15 毫秒
41.
Cristiane Barbosa D'Oliveira Matielo M.S. Rafael Plá Matielo Lemos Ph.D. Deise Schröder Sarzi M.S. Lilian de Oliveira Machado Ph.D. Dalvan Carlos Beise Bac. Priscila Caroline Thiago Dobbler M.S. Renata Machado Castro Bac. Mauro Sander Fett Ph.D. Luiz Fernando Würdig Roesch Ph.D. Flávio Anastácio de Oliveira Camargo Ph.D. Valdir Marcos Stefenon Ph.D. 《Journal of forensic sciences》2020,65(1):259-265
DNA is one of the fastest growing tools in forensic sciences, increasing reliability in forensic reports and judgments. The use of DNA has increased in different areas of the forensic sciences, such as investigation of plant species, where plastid DNA has been used to elucidate and generate evidence in cases of traceability of genetically modified and controlled plants. Even with several advances and the practice of using DNA in forensic investigations, there are just few studies related to the identification of genetic tools for the characterization of drug and nondrug-types of Cannabis. Herein, the whole plastomes of two drug-type Cannabis are presented and have their structures compared with other Cannabis plastomes deposited in the GenBank, focusing in the forensic use of plastome sequences. The plastomes of Cannabis sativa “Brazuka” and of the hybrid Cannabis AK Royal Automatic presented general structure that does not differs from the reported for other C. sativa cultivars. A phylogenomic analyses grouped C. sativa “Brazuka” with the nondrug C. sativa cultivars, while the hybrid Cannabis AK Royal Automatic placed isolated, basal to this group. This suggests that the analysis of plastomes is useful toward genetic identification of hybrids in relation to C. sativa. 相似文献
42.
Duell Natasha Steinberg Laurence Icenogle Grace Chein Jason Chaudhary Nandita Di Giunta Laura Dodge Kenneth A. Fanti Kostas A. Lansford Jennifer E. Oburu Paul Pastorelli Concetta Skinner Ann T. Sorbring Emma Tapanya Sombat Tirado Liliana Maria Uribe Alampay Liane Peña Al-Hassan Suha M. Takash Hanan M. S. Bacchini Dario Chang Lei 《Journal of youth and adolescence》2019,48(4):835-836
Journal of Youth and Adolescence - In the original publication, the legends for Figs 4 and 5 were incorrect, such that each regression line was mislabeled with the incorrect country. Below are the... 相似文献
43.
In recent years, Spanish local governments have come under increasing pressure to accommodate severe economic restrictions while maintaining their provision of local public services. We analyse overall cost efficiency in Spanish local governments during the period of the economic crisis (2008–2013), under four different non-parametric methodologies. Moreover, given how problematic it is to precisely define what municipalities do, we compare three different output models with various measures of quantity as well as quality. Results suggest that Spanish local government efficiency improved over the period 2008–2013 since budget expenditures (inputs) fell while local public services and facilities (outputs) were maintained. We also find evidence of the possible implications of service quality when measuring municipalities’ efficiency, and of structural differences in the average efficiency between municipalities located in different Spanish regions. Finally, our results confirm that the level and variation of efficiency scores are affected by the approach taken. 相似文献
44.
Brian Z. Tamanaha 《Law & social inquiry》2011,36(1):297-318
The hundredth anniversary of the original publication of Eugen Ehrlich's Fundamental Principles of the Sociology of Law is nearly upon us. The book earned high praise from Oliver Wendell Holmes, Roscoe Pound, and Karl Llewellyn as one of the outstanding works of its time. Ehrlich has been identified as an early legal realist, a pioneering figure in legal sociology, and a leading theorist of legal pluralism. In this retrospective review, I explain the strengths and weaknesses of this classic book. Ehrlich articulated an unsurpassed account of dynamic social‐legal change, an account that remains fresh and timely today. 相似文献
45.
This paper uses an augmented Solow model, with cross section data, to measure the effect on per-capita income of a) the entrenchment of various rights in a country's constitution and b) the level of economic freedom in a country, broadly construed. The results suggest that entrenchment,per se, of any single right seldom has a significant general economic effect, while the effect of economic freedom is significant and substantial. The paper then considers whether such evidence could support the proposition that “constitutions do not matter.” While it concludes otherwise, it does caution against incurring excessive negotiation costs to obtain entrenchment of a comprehensive “wish list” of rights. 相似文献
46.
Alvin Z. Rubinstein 《Society》1992,29(6):9-14
He is author of Red Star on the Nile; Soviet Foreign Policy Since World War II;and Moscow’s Third World Strategy.He is co-editor of Anti-Americanism in the Third World. 相似文献
47.
48.
49.
This study examined the factors associated with resistance to peer pressure toward antisocial behaviors among a sample of Mexican-origin adolescents (n=564) living in a large Southwestern city in the U.S. A model examining the influence of generational status, emotional autonomy from parents, and self-esteem on resistance to peer pressure was tested independently for boys and girls. Gender differences emerged in the factors that influenced resistance to peer pressure. Results indicated that resistance to peer pressure was influenced by generational status and emotional autonomy from parents for both boys and girls. However, self-esteem was found to influence resistance to peer pressure only for boys.Mayra Y. Bámaca is a graduate student in Family and Human Development at Arizona State University. Her research interests include adolescent development among ethnically diverse populations, the influence of contextual factors in development, parenting adolescents, and resiliency among Latino adolescents and their families. This work was based on the master’s thesis of the first author.Adriana J. Uma?a-Taylor received her Ph.D. from the University of Missouri-Columbia and is currently an Assistant Professor of Family and Human Development at Arizona State University. Her research interests include ethnic identity formation during adolescence and resilience among Latino adolescents and their families.This study was supported, in part, by a grant to the second author from the Fahs Beck Fund for Research and Experimentation of the New York Community Trust. 相似文献
50.
This article investigates the connection between the apparently uncorrelated issues of tax evasion and privatisation in a political economy framework. We first consider how the political process – given a country's level of development and income distribution – will affect the efficiency of the tax system. We then discuss the impact of the efficiency of the taxation system on the outcomes of privatisation. We consider under which condition privatisation will proceed, and who will be the political supporters as well as the main winners of the privatisation process. Moreover, we investigate the impact of different forms of corruption both on the initial public support for privatisation, as well as on its long term political sustainability. 相似文献