全文获取类型
收费全文 | 567篇 |
免费 | 16篇 |
专业分类
各国政治 | 46篇 |
工人农民 | 28篇 |
世界政治 | 61篇 |
外交国际关系 | 33篇 |
法律 | 256篇 |
中国政治 | 3篇 |
政治理论 | 136篇 |
综合类 | 20篇 |
出版年
2021年 | 5篇 |
2020年 | 6篇 |
2019年 | 7篇 |
2018年 | 19篇 |
2017年 | 19篇 |
2016年 | 13篇 |
2015年 | 19篇 |
2014年 | 14篇 |
2013年 | 90篇 |
2012年 | 14篇 |
2011年 | 17篇 |
2010年 | 12篇 |
2009年 | 16篇 |
2008年 | 16篇 |
2007年 | 21篇 |
2006年 | 19篇 |
2005年 | 12篇 |
2004年 | 16篇 |
2003年 | 15篇 |
2002年 | 17篇 |
2001年 | 7篇 |
2000年 | 14篇 |
1999年 | 8篇 |
1998年 | 12篇 |
1997年 | 13篇 |
1996年 | 12篇 |
1995年 | 13篇 |
1994年 | 6篇 |
1993年 | 7篇 |
1992年 | 8篇 |
1991年 | 9篇 |
1990年 | 9篇 |
1989年 | 6篇 |
1988年 | 5篇 |
1987年 | 7篇 |
1986年 | 10篇 |
1985年 | 2篇 |
1984年 | 11篇 |
1983年 | 6篇 |
1982年 | 2篇 |
1981年 | 9篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1977年 | 8篇 |
1976年 | 3篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1972年 | 5篇 |
1971年 | 2篇 |
排序方式: 共有583条查询结果,搜索用时 15 毫秒
91.
In this paper, we leverage a 10-wave election panel to examine the relative and dynamic effects of voter evaluations of Bush, Palin, Biden, McCain, and Obama in the 2008 presidential election. We show that the effects of these political figures on vote choice evolves through the campaign, with the predictive effects of President Bush declining after the nominees are known, and the effects of the candidates (and Palin), increasing towards Election Day. In evaluating the relative effects of these political figures on individual-level changes in vote choice during the fall campaign, we also find that evaluations of the candidates and Sarah Palin dwarf that of President Bush. Our results suggest a Bayesian model of voter decision making in which retrospective evaluations of the previous administration might provide a starting point for assessing the candidates, but prospective evaluations based on information learned during the campaign helps voters to update their candidate preference. Finally, we estimate the “Palin effect,” based on individual-level changes in favorability towards the vice-presidential nominee, and conclude that her campaign performance cost McCain just under 2% of the final vote share. 相似文献
92.
93.
94.
95.
96.
Tardivo D Sastre J Ruquet M Thollon L Adalian P Leonetti G Foti B 《Journal of forensic sciences》2011,56(3):766-770
Canines are usually used in anthropological and forensic sciences for sex and age determination. The best methods to estimate age are based on secondary dentine apposition, evaluated from periapical X-rays. The aim of this study was to propose a new method of sex and age estimation using 3D models to obtain more precise predictions using tooth volumes. Fifty-eight dental CT scans of patients aged 14-74 with a well-balanced sex ratio composed the sample. One hundred and thirty-three healthy canines were modeled (Mimics 12.0). The sample was divided into a training sample and a validation sample. An age formula was determined using the "pulp volume/tooth volume" ratio. Sex prediction was adjusted with total volumes. Applying the equations to the validation sample, no significant difference was found between the real and predicted ages, and 100% of the sex predictions were correct. This preliminary study gives interesting results, and this method is worth being tested on a larger data sample. 相似文献
97.
人格权与民法典——人格权的概念和范围 总被引:1,自引:0,他引:1
《法国民法典》中的人格权制度出现于二十世纪七十年代。本文作者介绍了《法国民法典》中现有的人格权家族,并构建了理想的人格权框架。作者认为,人格权是一项民事权利而不是一项基本权利,是一项法律赋予人的权利,而不是法律规定的制度。 相似文献
98.
99.
Thanh-Tam Ho Reena Roy 《Forensic Science International: Genetics Supplement Series》2011,5(3):210-215
The aim of this research was to obtain DNA profiles from immunochromatographic test devices which have already yielded positive results with body fluids obtained from fourteen volunteers. Three different immunochromatographic cards for the identification of human blood and one for the identification of human saliva were used for this research. Each body fluid was detected using the appropriate immunochromatographic card. The used cards were kept at room temperature for various lengths of time. The membranes were removed at the end of the designated times and the entire strip was extracted using low copy number (LCN) extraction procedure. The extracted DNA was amplified using reduced amplification volume and higher PCR cycle numbers. Autosomal STR profiles were detected using AmpFℓSTR® Identifiler™ PCR Amplification Kit from Applied Biosystems (AB). Additionally, DNA extracted from the male volunteers was amplified using the AB AmpFℓSTR® Yfiler™ PCR Amplification Kit. Analysis of the amplified products was carried out by capillary electrophoresis injection on the AB 3130xl Genetic Analyzer. The generated DNA data was analyzed using the SoftGenetics GeneMarker® HID Version 1.7 software.Autosomal and Y-STR DNA profiles were obtained from most of the cards which were stored at room temperature for up to three months. DNA profile was obtained from all four types of the immunochromatographic cards used in this study. These profiles were concordant with the profiles obtained from the donors’ reference samples. 相似文献
100.
This article reviews the history of executive budgeting in the United States a century after President William Howard Taft's Economy and Efficiency Commission proposed an executive budget. This history, the authors argue, does not suggest that giving more budget power to the president will improve budget outcomes. Instead, what is needed is more cooperation between the branches of government and a better‐educated public—goals that were shared by budget reformers when the Taft report was published. 相似文献