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The rare event of a corpse immersed in glacier ice becoming exposed on a glacier surface is closely connected with the glaciological conditions at the scene and the site of the accident. Provided that the time since death is known, certain questions relative to the circumstances of a mountain accident can only be answered by considering glaciological aspects. How the scene of an accident can be reconstructed by inference from the site of discovery is discussed by means of three exemplary cases that occurred on Tyrolean glaciers (Austria) during the past 40 years: (1) Two corpses were discovered close above the equilibrium line in the accumulation area after 25 years. The two victims had fallen down a rock face after the breaking off of a cornice and had come to rest in the uppermost part of the accumulation area. (2) A victim was discovered in the lower ablation area 8 years after falling down a crevasse in the middle part of the ablation area. (3) A female alpinist was discovered at the very end of the glacier after 29 years; it was concluded that the accident must have happened in the accumulation area. 相似文献
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The relationship between association with deviant peers and offending is a longstanding interest in criminology, however, the mechanisms that produce the relationship are seldom investigated. As a result, theoretical links between differential association and offending are often speculative. Differential association theorists maintain that interaction with deviant peers results in cognitive changes that make offending more attractive. Others contend that peers' influence on offending is enacted via group situations where associates encourage crime by offering opportunities or situational inducements. Using data from the National Youth Survey (NYS), this study explored the influence of delinquent friends' behaviors and attitudes on general, group, and solo offending for three crimes. OLS regression analyses supported differential association theory as originally written and no evidence was found that its effects were contingent on the presence of co-offenders. Implications of this exploratory analysis for differential association theory are provided along with directions for future research. 相似文献
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Owen Esaias M.Sc. Grant W. Noonan D.P.S. Shane Everist M.Sc. Michell Roberts B.B.Sc. Cassie Thompson M.Sc. Matt N. Krosch Ph.D. 《Journal of forensic sciences》2020,65(3):722-728
An important component of crime scene reconstruction is bloodstain pattern analysis (BPA). Where BPA concerns impact patterns, estimating the area of origin is critical information for scene reconstruction. Traditionally, this is achieved by measuring individual bloodstains and performing trigonometric calculations; however, 3D scanning has been proposed as a viable alternative for overcoming logistical and practical concerns with the manual method. Therefore, this project aimed to establish whether the FARO Focus 3D scanner and FARO Zone 3D software can improve the accuracy of area of origin estimates relative to the manual method. We created a series of eight bloodstain impact patterns and performed paired analysis using the two methods to estimate areas of origin for each pattern. Our data suggested that FARO-derived estimates were generally more accurate than using the manual method. FARO-estimated heights of origin areas were generally closer to the true distance. Both methods underestimated the distance from the wall for most patterns originating 150mm or greater from the wall, but overestimated distances for patterns originating closer to the wall. The degree to which distances were underestimated increased significantly the further the blood source was from the wall and was greater for FARO-derived estimates. The results of this research contribute to the validation of these instruments for operational implementation for BPA and should be considered alongside the practical benefits of 3D scanning relative to manual methods. Further, 3D scanning can provide reliable BPA reconstruction documentation for technical review and court presentation. 相似文献
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Matt Bolton 《The Political quarterly》2020,91(2):334-342
This article explores the ‘democratic socialism’ being proposed by new left movements on either side of the Atlantic, and evaluates its claim to be a form of anti- or postcapitalism. It argues that in the democratic socialist worldview, the line between capitalism and socialism rests on the balance of power between workers and capitalists in the economic sphere. While traditional social democracy seeks to redistribute wealth but leaves relations between workers and capitalists within firms untouched, democratic socialism seeks to abolish private property in the economic sphere. Production is controlled democratically by the workers themselves, in league with a workers’ state. The article critically appraises the claim that such a scenario constitutes a form of postcapitalism. Drawing on the work of critical Marxists such as Moishe Postone, it argues that capitalism is not primarily defined by private property relations in the economic sphere, but rather the peculiar social form of capitalist labour. Unlike in pre-capitalist societies, for labour in capitalism to secure a continued basis on which to reproduce the means of subsistence, it must be socially validated as ‘value-producing’. The criteria for value validation is not set in the workplace, or within a single nation state, but rather on the world market. The article concludes that, for all its merits, the democratisation of workplaces does not overcome the need for this social validation, but rather constitutes an alternative form of managing the process of production in this context. As such, democratic socialism, like social democracy, remains susceptible to the same imperatives and crises as other forms of capitalist production, and so cannot be said to constitute a form of ‘postcapitalism’. 相似文献
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What Levels of Racial Diversity Can Be Achieved with Socioeconomic‐Based Affirmative Action? Evidence from a Simulation Model 下载免费PDF全文
Sean F. Reardon Rachel Baker Matt Kasman Daniel Klasik Joseph B. Townsend 《Journal of policy analysis and management》2018,37(3):630-657
This paper investigates to what extent socioeconomic status (SES)‐based affirmative action in college admissions can produce racial diversity. Using simulation models, we investigate the racial and socioeconomic distribution of students among colleges under the use of race‐ or SES‐based affirmative action policies, or targeted, race‐based recruitment policies. We find, first, that neither SES‐based affirmative action nor race‐targeted recruiting on their own produce levels of racial diversity achieved by race‐based affirmative action. However, the two policies in combination, although likely expensive, may yield racial diversity comparable to race‐based affirmative action. Second, the use of affirmative action policies by some colleges reduces the diversity of similar‐quality colleges without such policies. Third, the combination of SES‐based affirmative action and race recruiting results in fewer academically‐overmatched Black and Hispanic students than under race‐based affirmative action, but the schools that use both also see a reduction in the academic achievement of enrolled students. 相似文献