Establishing the Limits of TrueAllele® Casework: A Validation Study

The limits of the expert system, TrueAllele^® Casework (TA), were explored using challenging mock casework profiles that included 17 single‐source and 18 two‐, 15 three‐ and 7 four‐person DNA mixtures. The sensitivity (ability to detect a minor contributor) of the TA analysis process was examined by challenging the system with mixture DNA samples that exhibited allelic and locus dropout and other stochastic effects. The specificity (ability to exclude nondonors) was rigorously tested by interrogating TA derived genotypes with 100 nondonor profiles. The accuracy with which TA estimated mixture weights of contributors to the two‐person mixtures was examined. Finally, first‐degree relatives of donors were used to assess the ability of the system to exclude close relatives. TA demonstrated great accuracy, sensitivity, and specificity. TA correctly assigned mixture weights and excluded nearly all first‐degree relatives. This study demonstrates the analysis power of the TrueAllele^® Casework system.     

Implementing Joined‐Up Government: Lessons from the Australian Social Inclusion Agenda

‘Joined‐up government’ (JUG) approaches have emerged in many industrialized countries as a means to tackle persistent ‘wicked’ public and social policy problems (Pollit 2003 ). Despite this, limited evidence exists concerning their implementation or effectiveness. ‘JUG’ was popularized by the Blair Government (UK) with its focus on addressing social exclusion. Following in these footsteps, in 2007 the Australian Government launched the Social Inclusion Agenda: a joined‐up approach to improving the wellbeing of all Australians and addressing disadvantage. This paper focuses on findings from a study that examined the SIA as a natural experiment in JUG. Drawing on the implementation experiences of federal policy makers, our findings lend weight to emerging research into JUG that suggests that compatibility and consistency between goals, instruments, and processes is critical to success. We argue that closer attention needs to be given to developing ‘supportive architecture’ around joined‐up initiatives to facilitate implementation.     

Gunshot entrance wound abrasion ring width as a function of projectile diameter and velocity

The relationships between gunshot entrance wound abrasion ring widths versus projectile diameter and velocity, using foam-backed deer hides as targets, were investigated. At a fixed velocity, abrasion ring width increased with increasing projectile diameter but decreased in proportion to the central defect diameter. For fixed-diameter projectiles, very slow and high velocities produced minimal abrasion width. Maximal abrasion width occurred at intermediate velocities. The authors postulate that abrasion width is a function of the ratio of projectile velocity and the maximum deformation velocity of the target skin. The largest abrasion width occurs when the ratio is one. Using a projectile velocity known to produce maximum abrasion width at an initial warm temperature, then decreasing the target deformation velocity by cooling, produced the expected results of decreasing abrasion width.     

Mediation Ethics: A Grounded Approach

Using insights drawn from mediation practice, social justice scholarship, and debates on ethical thinking in other professional fields, the authors argue that prevailing ethical codes for mediators in the United States stunt the development of ethical thinking in the field. Current codes and even their critiques take a "top-down" approach that proceeds from the perspective of the mediator and gives primacy to abstract principles rather than to the particulars and contexts of disputes. This approach ignores a much richer practice on the ground, depends on an artificial division of procedural and substantive justice, and constricts the scope of ethical questions raised, inhibiting effective systemic solutions. The authors argue for ethics grounded in the context of particular substantive areas, which do not focus on the mediator alone and which remain open to a wider set of social justice considerations.