全文获取类型
收费全文 | 213篇 |
免费 | 11篇 |
专业分类
各国政治 | 17篇 |
工人农民 | 2篇 |
世界政治 | 21篇 |
外交国际关系 | 7篇 |
法律 | 148篇 |
中国政治 | 2篇 |
政治理论 | 27篇 |
出版年
2023年 | 6篇 |
2022年 | 1篇 |
2021年 | 4篇 |
2020年 | 12篇 |
2019年 | 10篇 |
2018年 | 13篇 |
2017年 | 7篇 |
2016年 | 13篇 |
2015年 | 7篇 |
2014年 | 7篇 |
2013年 | 22篇 |
2012年 | 7篇 |
2011年 | 13篇 |
2010年 | 5篇 |
2009年 | 11篇 |
2008年 | 9篇 |
2007年 | 5篇 |
2006年 | 6篇 |
2005年 | 2篇 |
2004年 | 10篇 |
2003年 | 10篇 |
2002年 | 11篇 |
2001年 | 5篇 |
2000年 | 6篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 3篇 |
1992年 | 1篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1980年 | 1篇 |
1969年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有224条查询结果,搜索用时 15 毫秒
161.
The number of automobile recalls in the U.S. has increased sharply in the last two decades, and the numbers of units involved are often counted in the millions. In 2010 alone, over 20 million vehicles were recalled in the United States, and the massive recalls of full model lines by Toyota have brought this issue to the front pages around the country and the world. However, there is no quantitative evidence of the effect of recalls on safety. Without that evidence, the government and insurance companies have been reluctant to request and use more detailed recall information to increase correction rates, and regulators have not studied the possible link between the growing number of recalls and the risk of life for consumers. In this paper we empirically quantify the effect of vehicle recalls on safety using repeated cross‐sections on accidents of individual drivers and aggregate vehicle recall data to construct synthetic panel data on individual drivers of a particular vehicle model. We estimate the effect of recalls on the number of accidents and find that a 10 percent increase in the recall rate of a particular model reduces the accidents of that model by between 0.78 percent and 1.6 percent when using the full sample of accidents in our data. We also find that recalls classified as “hazardous” are more effective in reducing accidents, and the recall effect is especially strong when we restrict attention to accidents that lead to personal injuries and only include vehicles more likely to be at fault for the accident, but much less so for accidents that only lead to property damage. We also find that vehicle models with recalls with higher correction rates have on average fewer accidents in the years following a recall, which indicates the importance of the role of drivers' behavior regarding recalls on safety. Our findings suggest that policymakers should consider, for example, policies to allow insurance companies to take into account recall correction behavior when pricing auto insurance, which could be made possible through regulatory changes by the U.S. government, and should revisit the complex trade‐offs between pre‐ and post‐market regulation in this important industry. © 2011 by the Association for Public Policy Analysis and Management. 相似文献
162.
163.
Interdisciplinary science benefits from frameworks that bridge different perspectives and methodological approaches in order to understand and solve complex problems. This article applies the double exposure framework to analyse how economic and environmental change drives recent political instability and food crises in Niger and the resultant implications for the food security of pastoral populations. Findings illustrate how processes of global change are undermining the historic resilience of pastoral communities within the region. Community and regional responses to new and unfamiliar conditions have resulted in heighted political instability that limits pastoralists’ ability to cope with future shocks. 相似文献
164.
Francesco Ventura M.D. Ph.D. Federica Portunato M.D. Enrico Pizzorno M.D. Silvana Mazzone M.D. Alfredo Verde Psy.D. Ph.D. Gabriele Rocca M.D. 《Journal of forensic sciences》2013,58(3):831-836
The finding of a mummified body raises many problems, also because of the limits of the medico‐legal investigations in case of mummification. Psychological autopsy and behavioral analysis have demonstrated a significant impact in case of equivocal death. The mummified corpse of a woman was found sealed in a wardrobe during the death investigation of a 36‐year‐old man, later discovered to be the woman's son. The woman's corpse was well preserved and no external injuries were found. Autopsy could not ascertain the cause of death. The state of the premises and the writings on the walls offered an opportunity to investigate the man's psychological profile and to better understand how the events might have taken place. The role of an accurate investigative analysis of the crime scene is a cornerstone of forensic pathology and the case presented underlies the importance of an interdisciplinary approach in forensic sciences. 相似文献
165.
166.
167.
Patricio Silva 《Bulletin of Latin American research》2004,23(1):63-78
This article explores the process of political deactivation in Chile which has taken place since the military coup of 1973. Its stresses a series of political, social and cultural factors which have produced an increasing depoliticisation of the Chilean population under both the Pinochet regime and the current Concertaciòn governments. The forced depoliticisation generated by repression and fears under the military government marked the genesis of political deactivation. Since the late 1970s the marketisation of Chilean society and its increased consumerist orientation have weakened even further the readiness and interest among Chilean citizens to participate actively in party politics. In addition, in recent years politicians and politics in general have experienced in Chile a growing decrease of prestige and credibility. The media, and particularly the television, have become the main arenas in which new style politicians sell their electoral products to a depoliticised mass who expect quick and concrete solutions to their particular problems and demands. 相似文献
168.
Cotard's syndrome is a psychotic condition often associated with nihilistic delusions. This syndrome can be associated with destructive behaviors directed at the self and/or others. In this report we highlight the psychiatric-legal issues involving a case of Cotard's syndrome associated with self-starvation. 相似文献
169.
The Effect of Flunitrazepam (Rohypnol®) on the Development of Chrysomya megacephala (Fabricius, 1794) (Diptera: Calliphoridae) and its Implications for Forensic Entomology
下载免费PDF全文
![点击此处可从《Journal of forensic sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Tainá Costa Baia B.Sc. Alessandra Campos B.Sc. Bruno Mattos Silva Wanderley M.S. Renata Antonaci Gama Ph.D. 《Journal of forensic sciences》2016,61(4):1112-1115
This study investigated the potential effects of flunitrazepam (known as “date rape drug”) on the developmental cycle of Chrysomya megacephala, an important forensic species, and their possible implications for the calculation of the PMI. A 1050 C. megacephala eggs were divided into five groups with seven replications each. The eggs were placed on artificial diet prepared with four drug concentrations of flunitrazepam (4, 8, 16, and 32 ng/g), besides the control group (prepared with water). Were evaluated the potential effects on development time, weight gain, and mortality during the cycles. The drug had no significant effect on development time or mortality although it did affect the weight of the pupae and adults (Kruskal–Wallis, p < 0.05). The result can be deduced that the determination of the postmortem interval is not affected. 相似文献
170.
Der vorliegende Beitrag setzt die Reihe "Soziales Mietrecht in Europa" fort; die Beitr?ge werden im Rahmen eines von Prof.
Dr. Paul Oberhammer (Zürich) und Univ.-Prof. Dr. Andreas Kletečka (Salzburg) geleiteten und vom Jubil?umsfonds der Oesterreichischen
Nationalbank gef?rderten Projekts (Projektnummer 11997) erstellt und sollen rechtsvergleichende Impulse für die ?sterreichische
Diskussion bieten. 相似文献