Fundamental studies of bloodstain formation and characteristics

A detailed understanding of blood droplet impact dynamics and stain formation is an essential prerequisite to the interpretation of both individual bloodstains and spatter patterns. The current literature on theoretical models for the spreading and splashing of liquid drops on surfaces relevant to the forensic context of bloodstain formation has been reviewed. These models have been evaluated for a paper substrate using experimental data obtained as function of droplet size, impact velocity and angle. It is shown that for perpendicular impact there are fairly simple mathematical models for the spreading diameter and the number of scallops or spines formed around the stain though these have quite limited ranges of validity in their basic form. In particular, predictions for the diameter are best for small droplets impacting at high velocity and the number of spines saturates for higher impact velocities. In the case of spreading, a modification to the energy conservation model is found to provide excellent agreement with experimental stain diameters across a wide range of impact velocities. For non-perpendicular impact, the width of stains is found to depend principally on the normal component of impact velocity and may be predicted by an appropriate modification to the expression for the perpendicular case. Limitations in the calculation of impact angle from the stain aspect ratio are identified and a theoretical basis for the prediction of spines around an elliptical stain is proposed. Some key issues for future research are identified which include a systematic, quantitative study of the effect of surface properties on bloodstain formation.     

Revisiting the role of communication in adolescent intimate partner violence

A growing literature suggests that communication strategies can promote or inhibit intimate partner violence (IPV). Research on communication is still needed on a group ripe for early IPV intervention: high school-aged adolescents. This article revisits our previous analyses of young female reproductive clinic patients (Messinger, Davidson, & Rickert, 2011) by examining how the adolescent and young adult respondents differ. To explore replicability of the adolescent results across populations, they are compared to 487 adolescent female students sampled from four urban high schools. Across samples, all communication strategies were used more frequently within violent relationships. Multivariate analysis identified escalating strategies used and received as being positively associated with physical violence used and received in all three samples. Regarding verbal reasoning and temporary conflict avoidance, substantial differences appeared between the young adult and adolescent clinic samples, and results from the adolescent clinic sample were largely replicated with the adolescent school sample, suggesting that young adult samples in this literature are not adequate proxies for adolescents.     

Peer‐Reviewed Forensic Consultation in Practice: Multidisciplinary Oversight in Common Expertise

The fallibility of forensic science consultation is an ongoing and major justice concern. Prospective peer‐reviewed forensic consultation has over 10 years of application in American criminal and civil courts, adapting from the traditional oversight of teaching hospitals, rules of evidence and discovery, conventions of testimony of expert witnesses, and attorneys' overall trial strategy. In systematizing heightened oversight, this process ensures greater accountability in forensic science consultation. The integration of peer reviewers' complementary expertise and experience enhances the sophistication and overall quality of assessment. Forensic examination frequently involves the interface of different specialties. Multidisciplinary peer review augments expert proficiency with that of professional peers having different vantage points from relevant scientific disciplines. This approach ensures greater sophistication of a case inquiry, built‐in accountability, and streamlined processes when multiple experts are necessitated. Here, the authors present examples of several cases and the primary and secondary benefits of this collaborative, rigorous, cross‐disciplinary exercise.     

The European Union's approach to online behavioural advertising: Protecting individuals or restricting business?

The European Union (EU) has firmly set its stall out to protect individuals' data and privacy and has demonstrated this through the rejection of the old opt-out regime and the introduction of the new opt-in rules. These require businesses to obtain individual's prior and informed consent before their data are collected, stored and used for the purposes of online behavioural advertising (OBA). Individuals in the EU are afforded protection from the apparent dangers relating to data privacy and misuse that is associated with OBA, which is beyond the expectation of most Internet users. However, there are some criticisms levelled at the law that the EU has produced. Is simply gaining informed consent sufficient for protecting all types of information? Do certain types of information require a higher level of consent than others? Does the law fulfil its aim of protecting data subject's privacy and data? Is the current law restrictive to business? Do individuals know or care that their information is being collected for the purposes of targeted advertising and is there a better way to ensure that they do? Finally, will proposed new law to be found in the EU Data Protection Regulation solve any of these problems? This article will assess whether, as a policy decision, the EU's current approach has been too cautious in its attempts to protect individuals or restrict business.     

Reimagining instrument constituencies: the case of conservation policy in Mexico

Policy Sciences - Throughout the developing world, payments for ecosystem services (PES) programs are popular policy instruments that allow those who rely on such amenities as drinking water and...     

Trajectories of Perceived Parental Psychological Control across Adolescence and Implications for the Development of Depressive and Anxiety Symptoms

Journal of Youth and Adolescence - Theory and research indicate considerable changes in parental control across adolescence (e.g., declining behavioral control), but the developmental course and...     

An Intertribal Business Court

Few Indian reservations have any semblance of a private sector. Consequently, poverty and unemployment are major problems in much of Indian country. While there are many reasons why private enterprise is scarce in Indian country, one of the foremost reasons is businesses do not trust tribal courts. Businesses' distrust of tribal courts is not unique as outsiders often fear bias in foreign tribunals. Similarly, businesses are often concerned about a court's capacity to adjudicate complex disputes. Federal diversity jurisdiction was developed to allay fear of bias, and many states have developed business courts to address questions about court capacity. Tribes can overcome these issues by creating an intertribal business court (IBC). Tribes will be free to sculpt the IBC as they see fit. However, the IBC's intertribal nature will help reduce fears of bias, and an IBC's focus on business disputes will answer doubts about court capacity. An IBC will also make tribal law more accessible, further increasing confidence in this new tribunal. As businesses gain greater confidence in tribal legal institutions through the IBC, they will be more likely to operate in Indian country. Accordingly, the IBC could help to transform tribal economies.