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Armstrong A Babrauskas V Holmes DL Martin C Powell R Riggs S Young LD 《Journal of forensic sciences》2004,49(4):741-748
Tests have determined that boots or shoes of individuals at a fire scene do not transport sufficient contaminants ("tracking") through the fire scene to produce a positive laboratory result for the presence of gasoline in a fire scene that was not present at the time of the fire. Questions about the validity of forensic laboratory results have been raised on the basis that low-level gasoline residues detected in the laboratory samples could have been the result of transporting the residue by footwear contaminated from the fire scene ("tracking"). The data collected in this study establish that "tracking" does not lead to false-positive laboratory results. Canines trained and experienced in the detection of trace ignitable liquid residues were also utilized in this study. The canine results confirmed that properly trained canines show a higher sensitivity than do standard ASTM laboratory techniques for fire debris analysis. In a few cases, canines responded to contamination, but laboratory testing (which is the definitive indicator) did not produce positive results. 相似文献
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Forensic DNA laboratories worldwide have begun using multiplexed STR systems to decrease analysis time and increase sample throughput. The loci used in these systems are basically "nonsense" regions of human DNA. However, due to the chromosome on which some of these loci are located, various genetic abnormalities can sometimes be detected. This paper will show one such abnormality--Klinefelter's Syndrome--and the process used to show the possibility of this defect in two undiagnosed males using peak height ratios at the Amelogenin locus, and X-Y STRs. 相似文献
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Jonathan P. Caulkins 《Journal of Quantitative Criminology》2001,17(3):227-246
So-called three strikes and you're out sentencing laws for criminal offenders have proliferated in the United States. The laws vary considerably in their definitions of what constitutes a strike. This paper adapts the classic Poisson process model of criminal offending to investigate how varying sentence lengths and definitions of what constitutes a strike affect the effectiveness and cost-effectiveness of these sentencing laws. In particular, it asks whether, by using different definitions for the first, second, and third strikes or different sentence lengths, one can make the resulting incarceration more efficient in the sense of incapacitating more crimes per cell-year served. 相似文献
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Jonathan Griffiths 《International Review of Law, Computers & Technology》1999,13(3):283-301
This article surveys recent developments in UK copyright law. It sets these developments in the context of broader trends in copyright law and policy. Significant decisions concerning subsistence of copyright, authorship, infringement, defences, remedies and collective licensing are analysed. The author notes that copyright, and other intellectual property rights, have been given extra force as a result of recent legislative developments. He argues that, against this background, it is possible to discern increasing judicial concern to ensure that such an expansion in monopoly power does not operate against the public interest. 相似文献