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Evaluating Simulant Materials for Understanding Cranial Backspatter from a Ballistic Projectile 下载免费PDF全文
Raj Das Ph.D. Alistair Collins B.E. Anurag Verma B.E. Justin Fernandez Ph.D. Michael Taylor Ph.D. 《Journal of forensic sciences》2015,60(3):627-637
In cranial wounds resulting from a gunshot, the study of backspatter patterns can provide information about the actual incidents by linking material to surrounding objects. This study investigates the physics of backspatter from a high‐speed projectile impact and evaluates a range of simulant materials using impact tests. Next, we evaluate a mesh‐free method called smoothed particle hydrodynamics (SPH) to model the splashing mechanism during backspatter. The study has shown that a projectile impact causes fragmentation at the impact site, while transferring momentum to fragmented particles. The particles travel along the path of least resistance, leading to partial material movement in the reverse direction of the projectile motion causing backspatter. Medium‐density fiberboard is a better simulant for a human skull than polycarbonate, and lorica leather is a better simulant for a human skin than natural rubber. SPH is an effective numerical method for modeling the high‐speed impact fracture and fragmentations. 相似文献
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Raju J. Das 《当代亚洲杂志》2015,45(4):715-726
AbstractNeo-liberalism is capitalism without leftist illusions (i.e. illusions that there can be such a thing as humane capitalism on a long-term basis). The article makes a series of critical comments on India’s neo-liberalism expressed in the form of the so-called New Economic Policy. It argues, New Economic Policy is more than a governmental policy. It is rather a policy of capital, mediated and implemented by the state. Neo-liberalism is a social-spatial project. Neo-liberalism in rural areas (agrarian neo-liberalism) is particularly ruthless. Neo-liberalism is implemented through, and entails, the transformation of space, and thus produces enormous spatial unevenness. Neo-liberalism is also a part of the imperialist project. Given New Economic Policy’s adverse impacts, it has inspired massive resistance from below. Interestingly, in spite of offering some opposition, the left has been, overall, a conduit through which New Economic Policy has worked. The article shows how a critical discussion on neo-liberalism has implications for understanding macro-structural changes in societies such as that of India, which have suffered not only from economic backwardness but also incomplete revolutions. A dialectical view of neo-liberalism and the New Economic Policy connects them both to the democratic and agrarian questions, the national question, and the question of socialism itself. 相似文献
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Molecular genetic polymorphism study was undertaken in two tribal population groups of India at two tetranucleotide repeat loci on chromosome 12 (D12S66 and D12S67). The two tribal groups studied were Bison Horn Maria and Muria, belonging to Bastar district of Madhya Pradesh in Central India. For this study, 75 random, unrelated individuals were analyzed for D12S66 locus, whereas 76 individuals were analyzed for D12S67 locus. 相似文献
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Subramaniam H 《Canadian HIV/AIDS policy & law review / Canadian HIV/AIDS Legal Network》2004,9(2):55-56
In Delgadillo v Canada, the Federal Court of Canada upheld an Immigration and Refugee Board (IRB) decision to refuse refugee status to a Mexican gay male refugee claimant because he had an Internal Flight Alternative (IFA). Although the court reached this conclusion, it nevertheless agreed that Mr Delgadillo had a legitimate fear of persecution. As well, the court made an important finding--that people in Mexico who are living with HIV/AIDS do not have an IFA. 相似文献