Ballistic impact of hollow-point ammunition on porcine bone

Identifying failure mechanisms in skeletal tissue allows a deeper understanding of the effects of specific projectile impacts on bone. While ballistic trauma in flat bones is largely researched, knowledge of how long bones react to gunshot impacts is limited in the literature. The impacts of deforming ammunition appear to produce higher levels of fragmentation; however, these have not been studied in depth. This study compares the damage to femora bone by HP 0.357 and 9 mm projectiles constructed with both full and semi-metal jackets. Impact experiments were undertaken on a single-stage light gas gun involving the use of a high-speed video camera and full reconstruction of the bones to ascertain fracture patterns occurring in the femora. Higher degrees of fragmentation are likened to the presence of semi-jacketed HP projectiles than jacketed HP projectiles. The observations of external facing beveled edges are believed to be associated with the increased separation of the jacket and lead core of projectiles. Additionally, experimentation has shown that the amount of kinetic energy lost postimpact is likely related to the presence or the absence of a metal jacket on an HP projectile. The observed data, therefore, suggest that the composition, rather than the configuration, of a projectile affects the type and extent of the damage.     

A Preliminary Investigation into the Accuracy of 3D Modeling and 3D Printing in Forensic Anthropology Evidence Reconstruction,

There is currently no published empirical evidence‐base demonstrating 3D printing to be an accurate and reliable tool in forensic anthropology, despite 3D printed replicas being exhibited as demonstrative evidence in court. In this study, human bones (n = 3) scanned using computed tomography were reconstructed as virtual 3D models (n = 6), and 3D printed using six commercially available printers, with osteometric data recorded at each stage. Virtual models and 3D prints were on average accurate to the source bones, with mean differences from ?0.4 to 1.2 mm (?0.4% to 12.0%). Interobserver differences ranged from ?5.1 to 0.7 mm (?5.3% to 0.7%). Reconstruction and modeling parameters influenced accuracy, and prints produced using selective laser sintering (SLS) were most consistently accurate. This preliminary investigation into virtual modeling and 3D printer capability provides a novel insight into the accuracy of 3D printing osteological samples and begins to establish an evidence‐base for validating 3D printed bones as demonstrative evidence.     

“We All Make Mistakes”: the Communist Party of Australia and Khrushchev's Secret Speech, 1956

This article examines the impact of the Twentieth Congress of the Communist Party of the Soviet Union on the Communist Party of Australia (CPA). Specifically it focuses on the reverberations of Khrushchev's “secret speech” within the CPA leadership for the first six months of 1956. It argues that, in contrast to the received wisdom, the response of the leadership was characterised by confusion rather than consistency, division rather than unanimity. This had implications for CPA members as they struggled to come to terms with the line of the leadership and the authenticity or otherwise of the New York Times version of Khrushchev's speech. The words of [Khrushchev's] speech were like bullets, and each found its place in the hearts of the veteran Communists. Tears streamed down the faces of men and women who had spent forty or more years, their whole adult lives, in the movement […]. 1     

The effect of gender on violent and nonviolent recidivism: A meta-analysis

A large body of literature has been dedicated to understanding re-offending after release from prison - a phenomenon known as recidivism. A meta-analysis was conducted using fifty- seven published studies on actuarial predictors of both violent and nonviolent recidivism in men and women. The current analysis resulted in 127 effect sizes between violent recidivists and non-recidivists, and sixty-eight effect sizes between violent recidivists with nonviolent recidivists. Several variables (drug/alcohol use, age, and marriage) were predictive of recidivism. Gender differences were also observed. In men, increased violent criminal history was associated with increased violent recidivism. This effect was not true for women. In fact, longer sentences were predictive of violent re-offending in women and not men. Despite limited data on women, pursuing the predictors of recidivism in men and women independently demonstrated that gender differences exist, and supported the need for more data concerning the predictors of recidivism in women.     

Rehabilitating serious violent adult offenders: an empirical and theoretical stocktake

Extensive meta-analyses of the correctional programme evaluation literature have generated developments in the technology of programme design. However, the risk, need and responsivity principles do not constitute a rehabilitation theory and cannot answer specialist offender programme design questions. After more than a decade of involvement in programmes for seriously violent offenders, we decided to reassess the empirical evidence underpinning violence rehabilitation in adult men. We focused on both mixed and violent offender samples, reviewing the outcome data from nine evaluations of cognitive–behavioural interventions. Despite a plethora of methodological difficulties, it appears that most of the programmes had small to large effects on violent and non-violent recidivism. Little could be concluded from these evaluations about the most promising theoretical framework for future programme development. Most programmes contained only scant information on their underlying theory base. None referred to multivariate aggression or crime theories. We conclude that there is a pressing need for additional evaluative research, and theory development. To date, the case for specialist violent offending programmes has not been made.     

Risky business: Covering slow‐onset hazards as rapidly developing news

The emerging field of risk communication has yet to thoroughly grapple with how the mass media report risk. Through a content analysis of five newspapers noted for their science reporting, newspaper coverage of four environmental hazards is compared to media coverage of more traditional risky events. In general, these slow‐to‐develop stories are reported in much the same way as more traditional disaster stories. News accounts emphasized an event orientation, framed risks in terms of human activity rather than social and political contexts, described risk in terms of harms and benefits, and relied on traditional sources. The authors then explore how this version of mass‐mediated risk might change current definitions of risk communication and how a mediated construction of risk may influence public perception of the political choices these issues raise.     

Book Review

Adams, William C., Editor, Television Coverage of the Middle East. Norwood, N.J.: Ablex Publishing Corporation, 1981, 167 pages.