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This paper was presented at the Academy of Criminal Justice Sciences' Annual Meetings, St. Louis, Missouri, March, 1987. We also wish to thank the Administrative Office of the Courts of the State of California for their support, and all the agencies that participated in the survey. 相似文献
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This research implements a fractographic approach to investigate the relationships between kinetic energy, firearm-to-target distance, and various aspects of fracture behavior in gunshot trauma. Gunshot experiments were performed on pig scapulae (n = 30) using three firearms generating different muzzle (initial) kinetic energies, including a 0.32 pistol (103 J), 0.40 pistol (492 J), and 0.308 rifle (2275 J). Specimens were shot from two distances: 10 cm (n = 15) and 110 cm (n = 15). Features evaluated in fractographic analysis such as cone cracks, radiating cracks, crack branching points, and circumferential cracks could be easily identified and measured in flat bones and allowed for statistical comparison of crack propagation behavior under different impact conditions. Higher-energy bullets produced more radiating cracks, more crack branching points, and longer fracture lengths than lower-energy bullets. Distance had no significant effect on fracture morphology at the distances tested. That quantitative measures of crack propagation varied with energy affirms that kinetic energy transfer is important in determining the nature and extent of fracture in gunshot wounds and suggests it may be possible to infer relatively high- versus relatively low-energy transfer using these features. Ranges obtained with the three firearms exhibited considerable overlap, however, indicating that other variables such as bullet caliber, mass, and construction influence the efficiency of energy transfer from bullet to bone. Therefore, fracture morphology cannot be used to identify a specific firearm or to directly reconstruct the muzzle (initial) kinetic energy in forensic cases. 相似文献
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Liverpool Law Review - This paper discusses the approach of British and European Courts to the interpretation and application of the Article 5 ECHR right to liberty when faced with police powers.... 相似文献
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Justin Parent Rex Forehand Mary Jane Merchant Mark C. Edwards Nicola A. Conners-Burrow Nicholas Long Deborah J. Jones 《Journal of family violence》2011,26(7):527-533
The role of parenting in child disruptive behaviors has received substantial support; however, the findings as to differential
effects of specific parenting behaviors (e.g., discipline) on boys’ and girls’ disruptive behavior problems have not been
consistent. The current study examined the individual, unique, and interactive relation of two types of ineffective discipline
(i.e., harsh & permissive) with child disruptive behavior for at-risk boys and girls separately. Participants were 160 parents
with 3- to 6-year-old at-risk children (47.5% girls). Findings revealed that higher levels of harsh discipline were related
to more intense disruptive behavior of both boys and girls, whereas higher levels of permissive discipline were related to
more intense disruptive behavior of only boys. Additionally, results indicated that harsh and permissive discipline did not
interact to predict child disruptive behavior problems. Clinical implications and directions for future research are discussed. 相似文献
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