全文获取类型
收费全文 | 131篇 |
免费 | 9篇 |
专业分类
各国政治 | 13篇 |
工人农民 | 4篇 |
世界政治 | 14篇 |
外交国际关系 | 9篇 |
法律 | 83篇 |
中国共产党 | 1篇 |
政治理论 | 15篇 |
综合类 | 1篇 |
出版年
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 5篇 |
2019年 | 5篇 |
2018年 | 5篇 |
2017年 | 9篇 |
2016年 | 7篇 |
2015年 | 5篇 |
2014年 | 7篇 |
2013年 | 27篇 |
2012年 | 5篇 |
2011年 | 3篇 |
2010年 | 3篇 |
2009年 | 6篇 |
2008年 | 1篇 |
2007年 | 2篇 |
2006年 | 7篇 |
2005年 | 5篇 |
2004年 | 5篇 |
2003年 | 3篇 |
2002年 | 4篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1966年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有140条查询结果,搜索用时 15 毫秒
21.
Using Cluster Analysis and ICP‐MS to Identify Groups of Ecstasy Tablets in Sao Paulo State,Brazil 下载免费PDF全文
Camila Maione M.Sc. Vanessa Cristina de Oliveira Souza M.Sc. Loraine Rezende Togni M.Sc. José Luiz da Costa Ph.D. Andres Dobal Campiglia Ph.D. Fernando Barbosa Ph.D. Jr. Rommel Melgaço Barbosa Ph.D. 《Journal of forensic sciences》2017,62(6):1479-1486
The variations found in the elemental composition in ecstasy samples result in spectral profiles with useful information for data analysis, and cluster analysis of these profiles can help uncover different categories of the drug. We provide a cluster analysis of ecstasy tablets based on their elemental composition. Twenty‐five elements were determined by ICP‐MS in tablets apprehended by Sao Paulo's State Police, Brazil. We employ the K‐means clustering algorithm along with C4.5 decision tree to help us interpret the clustering results. We found a better number of two clusters within the data, which can refer to the approximated number of sources of the drug which supply the cities of seizures. The C4.5 model was capable of differentiating the ecstasy samples from the two clusters with high prediction accuracy using the leave‐one‐out cross‐validation. The model used only Nd, Ni, and Pb concentration values in the classification of the samples. 相似文献
22.
Police attitudes towards partner violence against women (PVAW) can play an important role in their evaluation and responses to this type of violence. The present study aims to examine ambivalent sexism and empathy as determinants of male police officers' law enforcement attitudes towards PVAW. The study sample was composed by 404 male police officers. Results suggested that male police officers scoring low in benevolent sexism expressed a general preference for unconditional law enforcement (i.e. regardless of the victim's willingness to press charges against the offender), whereas those scoring high in benevolent sexism expressed a preference for conditional law enforcement (i.e. depending on the willingness of the victim to press charges against the offender). Results also showed that police officers scoring high in empathy and low in hostile sexism were those who expressed a general preference for unconditional law enforcement. The presence of sexist attitudes and low levels of empathy among some police officers, and their influence on law enforcement attitudes, highlights not only the importance of specific training, but also the need to pay attention to the selection process of police officers dealing with PVAW. 相似文献
23.
It is disputed whether trade liberalisation processes are sufficient for reducing poverty and inequality. We explore how ‘gains from trade’ have been distributed in the two minor trade partners of Mercosur, Uruguay and Paraguay, by analysing the impact of trade liberalisation on poverty and inequality through two main transmission channels: prices and income. In the case of Uruguay, trade liberalisation favoured a reduction in poverty indicators but had an almost zero effect on income inequality. In the case of Paraguay, trade liberalisation had a markedly negative impact in terms of poverty yet income distribution improved. We conclude that in the case of Mercosur, the effect of trade on poverty and income inequality varies per country and per region. In particular, we conclude that trade integration policies cannot be regarded as ‘poverty-alleviating’ per se. 相似文献
24.
Tarini Fernando M.B. B.S. Calle Winskog M.D. Roger W. Byard M.D. 《Journal of forensic sciences》2013,58(4):1085-1087
A 51‐year‐old man was found dead face down and partially submerged in a bathtub alongside two hairdryers. The hairdryers had continued to work, as the victim had bypassed the electrical board of the house prior to dropping them into the water. This had resulted in death due to electrocution, with subsequent heating of the bath water causing marked putrefaction and softening of the immersed body parts. The back and feet, which were not submerged, were preserved. The degree of anterior decomposition was not in keeping with the postmortem interval; however, regional decomposition with sparing of the back and feet provided a clue at autopsy as to the sequence of events. Individuals with training in, or knowledge of, electrical circuitry are capable of modifying domestic wiring so that safety switches and/or fuses can be bypassed ensuring that electrical devices will continue to function even while under water. 相似文献
25.
26.
Fernando Escalante Gonzalbo 《Revista mexicana de ciencias políticas y sociales》2013,58(218):73-104
Mexico’s security crisis and Felipe Calderón’s (2006-2012) security strategy had its roots in drug trafficking, the prohibition of drugs, contraband and the border shared with the United States. Standard accounts of the violence experienced in the country, which reduce it to confrontations between drug cartels, are of little use. This article presents part of the context in which the security crisis developed, putting it in a historical perspective, and attempting to take a step towards a more nuanced interpretation. It holds that drug trafficking between Mexico and the United States is a complex, many-sided reality which admits dense symbolic elaboration. Apart from the very concrete shipping of drugs, drug trafficking is part of Mexico’s relation with the United States, a register that imbues the asymmetry between both countries with meaning, a space of political negotiation and a resource of American global diplomacy which is crystallized in a clandestine foreign policy system. Furthermore, through the demystification of the imagery that envelopes organized crime, corruption and contraband are examined, conceiving these two as phenomena that are integrated organically into borderland society. 相似文献
27.
Fernando Celaya Pacheco 《冲突和恐怖主义研究》2013,36(12):1021-1048
ABSTRACTThe relationship between drug trafficking and terrorism remains a contentious issue. While some assert that drug trafficking is a strong predictor of terrorism, others contest this observation. This study focuses on the impact of the Afghan opioid trade on terrorist violence in Central Asia, a region of drug transit states. We employ Geographic Information Systems–enabled visualizations of the drug trade and terrorism as well as statistical tests to study the drug–terror relationship at the subnational level. Our findings lend support to the argument that the drug trade facilitates terrorism, but we also find that the drug–terror relationship is multifaceted, complex, and intimately linked to the state. 相似文献
28.
29.
Fernando Díaz Orueta 《Space and Polity》2013,17(3):263-278
This article focuses its attention on the democratic practice of local governments, taking the Spanish experience within its European context as the main point of reference. The analysis of democratic practice in local governments takes into consideration not only the collective decision-making processes, but also the real possibilities of citizen participation, assessing the urban model they lead to in the medium to long term. Such an analysis could help to determine if cities are moving towards more democratic and egalitarian forms of social organisation. Large urban projects in Spain have not been debated and agreed upon previously despite the fact that such works have a transcendental impact of the lives of millions of citizens. Simultaneously, different local authorities have put into place new experiences of participative government since the late 1990s, arising from a shared diagnosis indicating the existence of a democratic deficit that should be overcome. 相似文献
30.