Investigation into "normal" background DNA on adult necks: implications for DNA profiling of manual strangulation victims

Others have investigated the role that DNA profiling could play as a method for identifying the perpetrator of manual strangulation. These studies have demonstrated that it is possible to collect offender DNA from the skin surface of a victim following physical contact. It is not known whether nonself biological material is normally present on the skin surface due to adventitious transfer occurring during innocent everyday interactions. To test the hypothesis that detectable amounts of nonself DNA are normally present on the skin surface of healthy adult individuals due to the adventitious transfer of DNA occurring during normal day-to-day social interactions, we designed an experiment in three phases. Phase 1 was used to deduce which DNA collection, extraction, and amplification methods were suited to investigating this question. During phase 2, the neck surface of 24 healthy adult volunteers was swabbed. DNA was extracted using the QIAamp DNA mini kit and amplified using the SGM Plus PCR amplification kit, using 28 PCR cycles. The work carried out during phase 3 involved a simulated assault to investigate primary and secondary transfer of DNA during physical contact. It was found that 23% of neck areas swabbed during phase 2 of this investigation showed nondonor alleles in the resulting DNA profile, with 5% of areas showing six or more nondonor alleles. The results of phase 3 showed that primary, secondary, and zero transfer of victim and/or offender DNA could be observed after physical contact and that alleles from an unknown source could still be detected in this more controlled experiment. The data presented in this paper demonstrate that DNA profiles generated after swabbing the skin surface of healthy adults can include components of an unknown source, present due to adventitious transfer. These components, if present in large quantities, have the potential to interfere with DNA profile interpretation of swabs taken for the investigation of physical assault by DNA profiling.     

Fimag: The United Kingdom Disaster Victim/Forensic Identification Imaging System

Abstract:  Imaging is an integral diagnostic tool in mass fatality investigations undertaken traditionally by plain X-rays, fluoroscopy, and dental radiography. However, little attention has been given to appropriate image reporting, secure data transfer and storage particularly in relation to the need to meet stringent judicial requirements. Notwithstanding these limitations, it is the risk associated with the safe handling and investigation of contaminated fatalities which is providing new challenges for mass fatality radiological imaging. Mobile multi-slice computed tomography is an alternative to these traditional modalities as it provides a greater diagnostic yield and an opportunity to address the requirements of the criminal justice system. We present a new national disaster victim/forensic identification imaging system—Fimag—which is applicable for both contaminated and non-contaminated mass fatality imaging and addresses the issues of judicial reporting. We suggest this system opens a new era in radiological diagnostics for mass fatalities.     

Real Solutions for Fake News? Measuring the Effectiveness of General Warnings and Fact-Check Tags in Reducing Belief in False Stories on Social Media

Political Behavior - Social media has increasingly enabled “fake news” to circulate widely, most notably during the 2016 U.S. presidential campaign. These intentionally false...     

Policing alienated minorities in divided cities

Minority groups frequently challenge the legitimacy of legal authorities, particularly the police. Without trust and legitimacy, the police encounter constant conflict and cannot function effectively. While past research has examined minorities’ perceptions of the police, national minorities provide an interesting and under‐investigated test case because of their inherent identity conflict with the state. The current research examines three factors to explain minority–majority disparities in views of the police: (i) police effectiveness and fairness; (ii) intergroup discrimination (termed relative deprivation in policing); and (iii) identification with the state. Findings from a survey of Jewish and Arab residents of nationally mixed neighborhoods in Israel (n = 394) suggest that while all of these factors account for minority–majority discrepancies in views of the police, perceptions of police fairness are particularly important. Furthermore, feelings of discrimination and low levels of identification with the state are less important than evaluations of fairness in explaining minorities’ negative perceptions of the police.     

Wanting Pictures After Feminism: Re-reading On Our Backs

Abstract

This article explores the relationship between photography and feminism that emerges through the pages of the lesbian sex magazine On Our Backs (1984–2006). The San Francisco-based magazine represents an exceptional archive of images made in the context of lesbian community. Returning to the photographs that were published in early issues of the magazine, the article argues that On Our Backs, whilst explicitly addressed to a paucity of available images of lesbian culture, reflects a complex engagement with the meaning of the photographic image in dialogue with contemporaneous feminist debates. Through the work of Tee Corinne, Morgan Gwenwald and Honey Lee Cottrell, a desire for pictures renders the image a site of fantasy in which different ways of inhabiting lesbian identity form in dialogue with a community of readers.     

Roles,trust and skills: A typology of patronage appointments

This article contributes to the study of the politics of patronage appointments by creating a typology of patronage roles based on the nature of trust between patrons and appointees and on the skills patrons seek in appointees. Our classification brings together the dispersed literature on patronage roles and can be applied to the study of modalities of patronage across and within countries. We offer preliminary evidence from our study of the politics of patronage appointments in Latin America suggesting that variations in patronage roles can be related to variations in the institutionalization of party systems and to the nature of the links between political actors and voters. Finally, we explore whether the categories identified in our empirical study can be found in other settings. We conclude that our typology can contribute to the study of the impact of modalities of patronage on the quality of public administration and on political governability.     

Prediction of Projectile Ricochet Behavior After Water Impact*

Abstract: Although not very common, forensic investigation related to projectile ricochet on water can be required when undesirable collateral damage occurs. Predicting the ricochet behavior of a projectile is challenging owing to numerous parameters involved: impact velocity, incident angle, projectile stability, angular velocity, etc. Ricochet characteristics of different projectiles (K50 BMG, 0.5‐cal Ball M2, 0.5‐cal AP‐T C44, 7.62‐mm Ball C21, and 5.56‐mm Ball C77) were studied in a pool. The results are presented to assess projectile velocity after ricochet, ricochet angle, and projectile azimuth angle based on impact velocity or incident angle for each projectile type. The azimuth ranges show the highest variability at low postricochet velocity. The critical ricochet angles were ranging from 15 to 30°. The average ricochet angles for all projectiles were pretty close for all projectiles at 2.5 and 10° incident angles for the range of velocities studied.     

The role of mobile computed tomography in mass fatality incidents

Mobile multi-detector computed tomography (MDCT) scanners are potentially available to temporary mortuaries and can be operational within 20 min of arrival. We describe, to our knowledge, the first use of mobile MDCT for a mass fatality incident. A mobile MDCT scanner attended the disaster mortuary after a five vehicle road traffic incident. Five out of six bodies were successfully imaged by MDCT in c. 15 min per body. Subsequent full radiological analysis took c. 1 h per case. The results were compared to the autopsy examinations. We discuss the advantages and disadvantages of imaging with mobile MDCT in relation to mass fatality work, illustrating the body pathway process, and its role in the identification of the pathology, personal effects, and health and safety hazards. We propose that the adoption of a single modality of mobile MDCT could replace the current use of multiple radiological sources within a mass fatality mortuary.     

Governance is where you find it

The concept of governance is used frequently and in a variety of different ways. This article discusses Mark Bevir’s use of an interpretative approach to governance and its implications for understanding better how we govern. This approach has particular relevance to democratic forms of governance, and to the use of deliberative and direct forms of democracy.