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The Computer-Aided Design Centre has developed a new face recall system which enables a witness to construct the image of a suspect on a television screen. The system currently uses the Photofit library and method of construction. Likenesses of target faces produced by subjects (n=36) using the new system were compared to conventional Photofits produced by a second group of subjects (n=36) of the same targets. There was no difference on any of the three measures employed in the assessed quality of the likenesses produced by Photofit and the CADC System. Both systems tended to produce more recognizable composites when construction was carried out in the presence of the target compared to its absence. Composites made from memory on the initial trial were marginally better with the CADC System than with Photofit. While both systems showed low absolute accuracy, they enjoyed a measure of success in transmitting a likeness of a facial type. It is concluded that while the CADC system shows promise, psychological constraints upon witnesses' powers of recall may place limits on the absolute accuracy achievable with any system of face reconstruction.These experiments were financed by grant No. POL/73 1675/24/3 from the Police Scientific Development Branch of the U.K. Home Office. Points of view expressed in this article are solely those of the authors and do not necessarily reflect the opinions or positions of the funding body. Our gratitude and thanks are due to Tony Kitson and Clive Holloway for their many hours spent developing and operating the CADC system; Jean Shepherd for her skills as a Photofit operator; the Computer-Aided Design Centre; and the MRC Applied Psychology Unit, Cambridge for facilities and subjects. 相似文献
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The resilience of some high-profile white-collar criminals in the media gaze after prison may lead some to conclude, particularly as some research also supports this notion, that this group of offenders generally manages well after conviction. Research in this area is, however, small and largely American. The authors seek to add to this small body of research by offering findings on the impact of conviction on 17 UK convicted white-collar criminals after completion of their sentence. It provides a unique insight into the consequences of conviction, showing that although there were some offenders who did experience limited impact and coped well, there was also a significant group who suffered a decline in status, financial losses, negative media coverage, and relationship and mental health problems, to name some. The authors argue more research is needed on this group and their needs as they are often neglected by the criminal justice system. 相似文献
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Loss of heterozygosity detected in a short tandem repeat (STR) locus commonly used for human DNA identification 总被引:3,自引:0,他引:3
Rubocki RJ Duffy KJ Shepard KL McCue BJ Shepherd SJ Wisecarver JL 《Journal of forensic sciences》2000,45(5):1087-1089
Short tandem repeat (STR) markers are commonly used in basic genetic research and in human identification testing. Clinically, STRs can be used to study genetic alterations in tumors. A genetic deletion common to many types of cancer is referred to as the loss of heterozygosity (LOH). Numerous examples of LOH in cancer have been described and some have been mapped to areas located in close proximity to markers employed in human identity testing. Despite this fact, LOH has rarely been observed for STR loci commonly employed in forensic testing. Recently, for medico-legal purposes, we were asked to determine whether a tissue biopsy originated from a particular individual. For a reference source we assessed two specimens, one from normal tissue and one from cancerous tissue. When both reference specimens were used to generate DNA profiles, we observed LOH at one STR locus, D13S317. As demonstrated in other cancers only the cancerous biopsy demonstrated LOH. The forensic community should be cognizant of these unusual circumstances because, as identification of human DNA continues to be used more extensively, certain instances will arise in which reference material will not be readily available. In these situations, archived specimens may be employed as a reference source. Clinical specimens such as tissue biopsies should be used with caution if they have not been confirmed to contain normal tissue. 相似文献
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Robert Shepherd 《Canadian public administration. Administration publique du Canada》2011,54(2):277-304
Abstract: One of the key policies arising from the Federal Accountability Act 2006 was the requirement for deputy heads to establish “department and agency audit committees.” These committees comprise retired public servants, academics and leaders from the private sector. This policy requires deputy heads to take advice from “outside” advisers for the management of their departments or agencies. This is unprecedented. The author examines the reform antecedents of this policy, key implementation considerations, and what this is likely to mean for management in the federal public service. 相似文献
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Alex R. Piquero David P. Farrington Jonathan P. Shepherd Katherine Auty 《Justice Quarterly》2014,31(3):445-472
Criminal offending has many negative outcomes. Researchers have recently begun to consider the impact offending has on offenders' health, with a few studies focusing on differential mortality risk. Yet, prior research has been limited due to selective samples, restricted range of follow-up time period, limited set of explanatory variables, and lack of theoretical guidance. This paper examines the risk of early death among 411 South London males in the Cambridge Study in Delinquent Development followed into their late 50s. Attention is paid not only to differential risk of death between nonoffenders and offenders, but also to the risk within the population of offenders and through consideration of theoretical frameworks and associated predictor variables. Results show that high-rate chronic offenders evince the highest risk of death, an effect that continues even after controlling for childhood individual and environmental risk factors as well as participation in a range of analogous behaviors. 相似文献
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