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491.
Chad Macziewski B.S. Ryan Spotts M.S. Scott Chumbley Ph.D. 《Journal of forensic sciences》2017,62(3):612-618
Numerous studies have focused on determining whether objective statistical methods can be used to discriminate between known matches and nonmatches when comparing laboratory prepared toolmarks. This study involved an analysis of striated toolmarks made as a function of varying vertical and horizontal angles of attack. Comparisons based on experimental data show that replicate toolmarks from the same tool show high correlation values at identical vertical and horizontal angles, with the correlation decreasing as the angular difference increases, especially for horizontal angular changes. Comparisons between nonmatching samples produce low correlation values that remain unchanged as horizontal angular differences increase. While complete statistical separation was not achieved between matching and nonmatching samples, there is evidence demonstrating that toolmarks can be identified if the variation in horizontal angle is within 10°. The experiment shows that computer‐aided comparison techniques could be viable for identification with the proper statistical algorithm. 相似文献
492.
Shirking in the Contemporary Congress: A Reappraisal 总被引:1,自引:0,他引:1
Carson Jamie L.; Crespin Michael H.; Jenkins Jeffery A.; Vander Wielen Ryan J. 《Political Analysis》2004,12(2):176-179
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Stressing relation-building and participatory communication approaches, the Rhode Island Coalition against Domestic Violence worked with journalists to develop a best practices handbook on news coverage of domestic violence murders. This study compares print coverage of domestic violence murders prehandbook (1996-1999) and posthandbook (2000-2002). Significant changes include increased labeling of the murder of intimates as domestic violence and doubled usage of advocates as sources. As a result, domestic violence murders, previously framed as unpredictable private tragedies, are more commonly framed posthandbook as social problems warranting public intervention. The authors conclude that relation-building approaches can affect news cultures and public discourse when conducted in conjunction with comprehensive participatory communications strategies. 相似文献
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The effects of age of witness, gender of witness, lineup presentation, and practice on eyewitness testimony were investigated. Ninety-six elementary-school children and 96 college students viewed a slide sequence of a crime, followed by target-present or target-absent photo identification in sequentially or simultaneously presented lineups. Prior to photo identification, half the subjects received a practice lineup. Children had a higher rate of choosing than adults, resulting in more foil identification errors in both target-present and target-absent lineups. Without prior practice, sequential presentation as compared to simultaneous presentation reduced errors in target-absent lineups for adult witnesses and showed a similar but nonsignificant reduction for child witnesses. With prior practice, sequential presentation lost the advantage over simultaneous presentation in target-absent error reduction. Practice reduced target-absent errors in simultaneous-presentation lineups for both age groups. 相似文献
498.
Edna Ryan 《澳大利亚女权主义者研究》1987,2(4):189-193
Carole Ferrier (ed), Point of Departure: the Autobiography of Jean Devanny (University of Queensland Press) St Lucia, Queensland, 1986. 相似文献
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The effect that the length of electoral periods has on the behavior of elected officials is examined. The hypothesis is that the longer the period between elections the less responsible or the more independent representatives will behave relative to the desires of their polity. The hypothesis is tested by examining the behavior of U.S. Senators. It is found that their independence follows a cyclical behavior which conforms to the electoral period. As a result it is by no means clear that decreasing the frequency of elections reduces the cost of elections. The effect of this independence cost on the optimal frequency of elections is discussed. 相似文献