全文获取类型
收费全文 | 266篇 |
免费 | 2篇 |
专业分类
各国政治 | 12篇 |
工人农民 | 13篇 |
世界政治 | 31篇 |
外交国际关系 | 15篇 |
法律 | 115篇 |
中国政治 | 1篇 |
政治理论 | 80篇 |
综合类 | 1篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 5篇 |
2019年 | 9篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 8篇 |
2015年 | 5篇 |
2014年 | 4篇 |
2013年 | 37篇 |
2012年 | 3篇 |
2011年 | 9篇 |
2010年 | 8篇 |
2009年 | 19篇 |
2008年 | 14篇 |
2007年 | 3篇 |
2006年 | 8篇 |
2005年 | 5篇 |
2004年 | 10篇 |
2003年 | 8篇 |
2002年 | 4篇 |
2001年 | 3篇 |
2000年 | 6篇 |
1999年 | 5篇 |
1998年 | 5篇 |
1996年 | 3篇 |
1995年 | 5篇 |
1994年 | 5篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1991年 | 7篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 4篇 |
1987年 | 5篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 5篇 |
1980年 | 4篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 3篇 |
1973年 | 3篇 |
1968年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有268条查询结果,搜索用时 15 毫秒
101.
The effects of agenda-setting and priming are well established in regard to the news media. Considerably less attention has been paid to these phenomena in entertainment media, in spite of the fact that entertainment media enjoy larger audiences than do news media and often address political topics. This article argues that the psychological mechanism hypothesized to lead to agenda-setting and priming effectsthat is, changes in construct accessibilityapplies as equally to entertainment media as it does to news media. Moreover, we contend that the frequency, consistency, and duration of entertainment media treatments of political issues encourage chronic accessibility of those issues. We test these hypotheses looking at television crime dramas as a source of political information. Using data from two controlled laboratory experiments and the 1995 National Election Study Pilot Study, we demonstrate that viewing crime dramas significantly increases concerns about crime and that these concerns significantly affect viewers' opinions of the president. The NES Pilot Study data suggest that these effects are restricted to frequent viewers of crime dramas, supporting a chronic accessibility model of agenda-setting and priming. These findings extend our growing understanding of how non-news sources of political information contribute to the construction of political attitudes. 相似文献
102.
J. N. C. Hill 《Democratization》2013,20(8):1382-1398
This article draws on the Algerian regimes of Chadli Benjedid and Abdelaziz Bouteflika to critically evaluate Steven Levitsky and Lucan Way’s dimension of linkage. The paper shows that, despite the intensification of the country’s ties to the European Union (EU) from one regime to the other, the willingness and ability of Brussels to put democratizing pressure on Algiers decreased rather than increased. This development challenges Levitsky and Way’s thesis and the importance they place on linkage in relation to their other dimensions of leverage and organizational power. The article concludes that: strengthening linkage does not always result in greater EU or Western democratizing pressure; the balance of importance Levitsky and Way strike between their dimensions is open to question; and, the EU has grown less willing to press for political change in Algeria. 相似文献
103.
104.
In this article, we consider different perspectives on who is best able to provide relevant and helpful expertise in public law cases where the long-term care of children is under consideration. Opinions vary and sometimes conflict on the respective importance of legal, child development, and lay understandings. These opinions relate to views on rights, appropriate procedures, decision-making processes, and the effects of decisions on children. Firstly, we summarise literature relevant to the knowledge and skills of three key groups of decision-makers within the Scottish child care system: legal professionals, child care professionals and lay decision-makers, and outline literature about guardians ad litem and their counterparts. We then discuss issues of expertise emerging from a study exploring the reasons for, and impact of, the appointment of safeguarders (who, in Scotland, perform a similar role to guardians). We conclude that there may be an increasing tendency for disagreement and a lack of clarity about who brings the most relevant and helpful expertise to hearings; this may have negative effects for children. 相似文献
105.
Anthony T. Quirk John M. Bellerby James F. Carter Fay A. Thomas Jenny C. Hill 《Science & justice》2009,49(2):87-93
A number of two-way radios, similar to those which have been employed to initiate Improvised Explosive Devices (IEDs), were acquired from a commercial supplier and grouped into four pairs. Samples of plastic material were collected from five distinct regions of each radio and analysed by Infrared and Raman spectroscopy to identify the nature of the material. One radio of each pair was then subjected to detonation with a commercially available plastic explosive. The combination of radio and explosive was considered to be representative of the components of an IED. Following detonation, fragments were recovered and, where possible, identified as specific sampling points of the radio.A combination of δ2H and δ13C stable isotopic analysis of material from each of the five sampling points was found to provide a pattern which was characteristic of a given radio and provided a means to associate pairs of radios. When few fragments were recovered, no positive association could be made between the fragments and the paired, undamaged radio. This was attributed, in part, to manufacturing variation in the radios. However, when three or more post-blast fragments were recovered it was possible to associate these with the paired, undamaged radio with a high degree of certainty. 相似文献
106.
Peter M. Vallone Carolyn R. Hill Daniele Podini John M. Butler 《Forensic Science International: Genetics Supplement Series》2009,2(1):111-112
Forensic DNA typing is currently conducted in approximately 8–10 h. The process includes DNA extraction, quantitation, multiplex PCR amplification, and fragment length detection. Today's commercial multiplex short tandem repeat (STR) typing kits are not optimized for rapid PCR thermal cycling. Current protocols require approximately 3 h for amplifying a multiplex containing 15 STR loci plus amelogenin. With the continuing development of miniaturization technologies such as microfluidic and micro-capillary devices, there is a desire to reduce the overall time required to type DNA samples. Such miniature devices could be used for initial screening at a crime scene, at a border, and at airports. There is also the benefit of reducing the required PCR amplification time for labs typing single-source reference samples. Surveys of fast processing polymerases working in combination with rapid cycling protocols have resulted in the development of a ‘rapid’ PCR amplification protocol. Results are obtained in less than 36 min run on a standard peltier-based thermal cycler employing a heating rate of 4 °C/s. Capillary electrophoresis characterization of the PCR products indicates good peak balance between loci, strong signal intensity and minor adenylation artifacts. Genotyping results are concordant with standard amplification conditions utilizing a standard 3 h (non-rapid) thermal cycling procedure. The rapid assay conditions are robust enough to routinely amplify 0.5 ng of template DNA (with 28 cycles). 相似文献
107.
Carolyn R. Hill M.S. John M. Butler Ph.D. Peter M. Vallone Ph.D. 《Journal of forensic sciences》2009,54(5):1008-1015
Abstract: A short tandem repeat multiplex assay has been successfully developed with 25 autosomal loci plus the sex‐typing locus amelogenin for a total of 26 amplified products in a single reaction. Primers for the loci were designed so that all of the amplicons present were distributed from 65 base pairs (bp) to less than 400 bp within a five‐dye chemistry design with the fifth dye reserved for the sizing standard. A multiplex design strategy was developed to overcome challenges encountered in creating this assay. The limits of the multiplex were tested, resulting in the successful amplification of a wide range of genomic DNA sample concentrations from 2 ng to as low as 100 pg with 30 cycles of PCR. The 26plex has the potential to benefit the forensic community for reference sample testing and complex relationship evaluation. 相似文献
108.
109.
110.