Improved Area of Origin Estimation for Bloodstain Pattern Analysis Using 3D Scanning

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.     

Bringing Policy Communities Back In: The Case of Fire Service Cover

It is argued that the concept of a policy community has an enduring value in the analysis of public policy, especially if an emphasis is placed on the way in which ideas are excluded from debates. Historical analysis based on the National Archives using a political science conceptual framework can offer fresh perspectives. The concept is developed through a specification of the conditions that encourage policy community formation and survival. Policy inertia led to a policy that produced a higher rate of deaths from fire in the UK than in other developed countries, especially among the socially excluded. The policy community concept can be of value in the policy analysis tool-kit, especially if policy frames that have become embedded to the exclusion of alternatives are identified.     

Consent and its meaning to the sexual victimization of women

Two conditions must be met in order for a person to be rightly considered the victim of a crime. First, there must be the victim of some form of harm. Second, the harm in question was the direct result of an act in which the harmed individual did not knowingly consent to take part. What are the dynamics of consent and how important should consent be in defining and placing criminal responsibility in crimes where women are sexually victimized? Finally, how does the conceptualization of victimization change when viewed from liberal and radical feminist perspectives?     

Procedural justice,obligation to obey,and cooperation with police in a sample of Jamaican citizens

ABSTRACT

Procedural justice theory plays a central role in understanding police–citizen relationships. To test the universality of procedural justice theory, researchers have tended to assess the relative impacts of normative and instrumental models of policing in different geopolitical contexts. Building on Reisig and Lloyd’s study in Jamaica, we test in the current study the relative impacts of procedural justice (a normative factor) and police effectiveness and risk of sanctioning (instrumental factors) on Jamaicans’ obligation to obey the police and willingness to cooperate with police. We found that procedural justice predicted both obligation to obey and cooperation, although obligation did not predict cooperation. And while effectiveness predicted obligation, it was not significantly related to cooperation. Lastly, older citizens were more willing to cooperate with police. The study’s implications for policy and future research are discussed.