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Gareth Griffiths Eugene Liscio Helen Guryn Quan Le Dean Northfield Graham.A. Williams 《Science & justice》2021,61(3):291-298
In a bloodletting incident, the area of origin (AO) of an impact bloodstain pattern is crucial when establishing the sequence of events. The use of laser scanners and other three-dimensional (3D) technologies to document and analyse bloodstains have been the subject of previous papers, especially where AO analysis is concerned. FARO Zone 3D (FZ3D) is a relatively new software programme that can be used for bloodstain AO analysis. FZ3D requires a greater understanding of inter-observer errors associated with AO. This study looked at the inter-observer variation between 21 examiners when repeatedly calculating the AO six times for a single impact pattern on a plain white wall. An impact rig which consisted of a spring tension arm was positioned and fixed 45 cm from the X wall (right wall), and 45 cm from the Y wall (left wall). This experimental design resembles an impact blow for a bloodletting event. The AO was unknown to all examiners, making it a blind study. The collected results were documented in a Microsoft Excel datasheet and later analysed. From previous literature, a 30 cm acceptable allowance was utilised for AO analysis; however, there is currently no accepted standard error for this type of analysis. The overall total 3D mean error for all examiners was 5.62 cm. The maximum error for any one impact analysis was 24.27 cm. The variation of the data, which was collected by all examiners, was documented as X = 1.14 cm, Y = 1.24 cm, Z = 1.68 cm, and the total 3D error = 2.28 cm. The total 3D error for any one examiner and the variance between examiners did not exceed the 30 cm acceptable allowance utilised in previous literature. 相似文献
265.
Joanie Willett 《The Political quarterly》2016,87(4):582-589
This article considers the devolution deal signed by Cornwall and the Isles of Scilly in the summer of 2015. It asks if the deal constitutes a more sustainable approach to governance, concluding that while there are some factors that help to enhance sustainability, other areas urgently require more attention. These claims are made through an analysis of a model of sustainability which emphasises the importance of networks and feedback loops envisaging civil society as an adaptive organism. This helps to show that although power is significantly dispersed in some aspects of the ‘Cornwall Deal’, this latter does little to alter the highly centralised nature of governance across England, or provide spaces where local actors can feed back into central policy. 相似文献
266.
Chloe E. Swinfield Eleanor A.M. Graham Diane Nuttall Sabine Maguire Alison Kemp Guy N. Rutty 《Forensic Science International: Genetics Supplement Series》2009,2(1):183-184
It is proposed that a DNA stabilizing solution (DNA Genotek Inc.) designed to preserve DNA in saliva samples at room temperature can be extrapolated to the storage of swab heads. The aim of this study was to evaluate the effectiveness of the solution for the preservation of reference swabs (buccal) and trace samples (facial swabs). To this end, the solution was used during a twin-site DNA transfer project assessing background levels of carer DNA present in children. Tubes containing 400 μl of solution were used to store and transport swab heads. At the laboratory, samples were extracted using the QIAamp DNA Mini Kit (Qiagen), quantified using the Quantifiler Duo Kit and profiled using the AmpF?STR® SGM Plus® PCR Amplification Kit (both Applied Biosystems). Twenty-eight PCR cycles were applied to all samples. Thirty-four cycles or a longer electrophoresis injection time was applied to trace samples where necessary. All Reference swabs produced high quantities of DNA and full DNA profiles after 28 cycles. Profile morphology indicated good quality DNA with no degradation. Of the trace samples, sufficient profiles were achieved to study the transfer of carer DNA making the solution fit for continued use in this project. DNA stabilizing solution enables the storage and transportation of swabs without freezing. This is convenient, reduces transportation costs and enables instant analysis of samples upon arrival at the laboratory. This is a useful alternative for a multi-site research project as well as a reliable storage tool for use in remote areas. 相似文献
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Attention has increasingly shifted towards the long-run perspective on technological innovation, which suggests that progress
comes in waves, each one originating with a major breakthrough or general purpose technology (GPT). This paper seeks to assess
whether nanotechnology is likely to be (or become) a GPT, a characteristic that other researchers have sometimes assumed though
not necessarily documented. Based on a survey of existing literature, this paper will explore the extent to which nanotechnology
addresses three primary characteristics of a GPT: pervasiveness, innovation spawning, and scope for improvement. The paper
draws on patent and patent citation databases to highlight the types of quantitative and qualitative information that would
be necessary, and in some instances is still lacking, to characterize fully the nature of nanotechnology.
相似文献
Stuart GrahamEmail: |
269.
Graham Spencer 《Negotiation Journal》2019,35(2):269-295
The role of former U.S. President William Jefferson Clinton in the Northern Ireland peace process has been acknowledged as an example of political risk‐taking and leadership driven by political interests and strategic post–Cold War aims. The tendency to examine Clinton's role from the perspective of international and global policy objectives, however, has obscured consideration of his motivational role in the Northern Ireland peace process and of how he moved between encouragement and intervention to help the political parties reach a settlement. This article, which is drawn from an extended interview conducted with Clinton in 2017, seeks to paint a more comprehensive picture of Clinton's participation in the peace process, showing how his combination of motivational and interventional skills enabled him to help convince others of the need to take risks for peace and gave him greater influence and leverage over the peace process as a result. 相似文献
270.
Casey A. Knifsend Daisy E. Camacho-Thompson Jaana Juvonen Sandra Graham 《Journal of youth and adolescence》2018,47(6):1208-1220
Participating in school-based activities is linked to positive academic engagement and achievement, but less is known about how peer relationships within activities affect these outcomes. The current study examined friends in extracurricular activities as a predictor of academic outcomes in multiethnic middle schools in California. Specifically, the mediating role of school belonging, and interactions by ethnicity and type of activity, were examined in a sample including African American or Black, East or Southeast Asian, White, and Latino youth in extracurricular activities (N?=?2268; Mage?=?13.36 in eighth grade; 54% female). The results of multilevel mediational models suggested that school belonging mediated the link between friends in activities and academic outcomes, and these findings replicated across groups based on ethnicity and the type of activity in which one was involved in general. These results are discussed in terms of how activities can be structured to promote positive peer relations in ways that are linked with academic engagement and achievement. 相似文献