The transfer of touch DNA from hands to glass, fabric and wood

The transfer of DNA from hands to objects by holding or touching has been examined in the past. The main purpose of this study was to examine the variation in the amount of DNA transferred from hands to glass, fabric and wood. The study involved 300 volunteers (100 for glass, 100 for fabric and 100 for wood) 50% of which were male and 50% female. The volunteers held the material for 60 s. The DNA was recovered from the objects using a minitape lift, quantified using the Quantifiler kit assay, extracted using a ‘Qiagen^® QIAamp DNA mini kit’ and amplified using the AmpFlSTR^® SGM Plus™ Amplification Kit at 28 cycles. The results show that using ANOVA there was a significant difference (F = 8.2, p < 0.05) between the three object types in the amount of DNA recovered. In terms of DNA transfer and recovery, wood gave the best yield, followed by fabric and then glass. The likelihood of success of obtaining a profile indicative of the holder was approximately 9% for glass samples, 23% for fabric and 36% for wood. There was no significant difference between the amount of DNA transferred by male or female volunteers. In this study good shedder status, as defined by obtaining useful profiles of 6 or more alleles, is estimated at approximately 22% of the population. The phenomenon of secondary transfer was observed when mixed DNA profiles were obtained but the incidence was low at approximately 10% of the total number of samples. DNA profiles corresponding to more than one person were found on objects which had been touched by only one volunteer. Although secondary transfer is possible the profiles obtained from touched objects are more likely to be as a result of primary transfer rather than a secondary source.     

Editors’ introduction: critical terrorism studies: practice,limits and experience

The articles in this special issue are drawn from papers presented at a conference titled Critical Terrorism Studies: Practice, Limits and Experience. The conference was organised by the Critical Studies on Terrorism Working Group of the British International Studies Association (BISA). The event was supported by both a BISA workshop grant and by Loughborough University’s Centre for the Study of International Governance (CSIG) and was held at Loughborough University from 9–10 September 2013. The conference aimed to explore what we know about terrorism and counterterrorism and importantly to ask how we know it. Reflecting the recent “materialist”, “everyday”, “experiential” and “narrative” turns in the fields of International Relations (IR), Geography and Cultural Theory, the event brought together scholars and practitioners to reflect on practices of research and knowledge production in Critical Terrorism Studies and related fields. The articles in this special issue reflect those aims.     

Organic impurity profiling of fentanyl samples associated with recent clandestine laboratory methods

Nearly a decade ago, fentanyl reappeared in the United States illicit drug market. In the years since, overdose deaths have continued to rise as well as the amount of fentanyl seized by law enforcement agencies. Research surrounding fentanyl production has been beneficial to regulatory actions and understanding illicit fentanyl production. In 2017, the Drug Enforcement Administration (DEA) began collecting seized fentanyl samples from throughout the United States to track purity, adulteration trends, and synthetic impurity profiles for intelligence purposes. The appearance of a specific organic impurity, phenethyl-4-anilino-N-phenethylpiperidine (phenethyl-4-ANPP) indicates a shift in fentanyl production from the traditional Siegfried and Janssen routes to the Gupta-patent route. Through a collaboration between the DEA and the US Army's Combat Capabilities Development Command Chemical Biological Center (DEVCOM CBC), the synthesis of fentanyl was investigated via six synthetic routes, and the impurity profiles were compared to those of seized samples. The synthetic impurity phenethyl-4-ANPP was reliably observed in the Gupta-patent route published in 2013, and its structure was confirmed through isolation and structure elucidation. Organic impurity profiling results for illicit fentanyl samples seized in late 2021 have indicated yet another change in processing with the appearance of the impurity ethyl-4-anilino-N-phenethylpiperidine (ethyl-4-ANPP). Through altering reagents traditionally used in the Gupta-patent route, the formation of this impurity was determined to occur through a modification of the route as originally described in the Gupta patent.     

Neutralized,enhanced, tokenistic: The influence of formal employment of service-users on processes of co-production

Can formally employing service-users in co-production roles redress the problematic power imbalances inhibiting co-production in the public sector? In this paper, we analyze service-users formally employed in co-production roles. Through semi-structured interviews, we illustrate how actors use their voice, experience, and identity to respond to different power imbalances. First, through the process of “inverting professionalism” structural limitations resulted in neutralized co-production. Second, through the process of “embedding expertise” formally employed service-users challenged collective expectations of their role and meditated power imbalances, resulting in enhanced co-production. Finally, through the process of “perpetuating rejection” a new exacerbated power imbalance emerged when their employment became a negative resource, resulting in tokenistic co-production. We extend understandings of how formally employing service-users has potential to redress power imbalances. However, we caution against policy taking this for granted and argue that more consideration of the influence of different forms of power is needed.     

The Centrality of Non-traditional Groups for Security in the Globalized Era: The Case of Children

The globalized security situation characterized by transnational threats and international interventionism in "new wars," connect non traditional local actors and traditional global actors to one another in unprecedented ways. We argue that children in particular need to be highlighted because they are highly pertinent to the globalized security situation, yet they make up one of the few agents that have remained non-politicized in the eyes of the scholarly community. The article suggests a framework of analysis that can generate analyses on security of traditional as well as non-traditional agents. Placing non-traditional groups in the center of attention serves to mirror the complexities of the current security situation better.     

The mobilization of computerized crime mapping: a randomized controlled trial

Journal of Experimental Criminology - To develop and evaluate the effectiveness of a decentralized, smartphone-based crime mapping and analysis tool designed for law enforcement officers working in...     

The mental health and substance misuse needs of male ex-armed forces personnel in prison

Ex-armed forces personnel constitute the largest known occupational group in prison but there is little evidence regarding their mental health, or substance misuse, needs. A total of 105 participants were interviewed and measures assessing symptoms of common mental health (CMH) problems and substance misuse were completed along with a review of their health care records. Forty (38%) participants screened for current CMH problems (CCMH) and high levels of dual symptomology and alcohol misuse were assessed. Thirty-nine (37%) had a mental health diagnosis recorded, most commonly for post-traumatic stress disorder (PTSD), depression and personality disorder. Those who screened for a CCMH problem were more likely to have pre-service vulnerability to negative health outcomes and those with dual symptomology were more likely to have experienced deployment during their service. Findings suggest the mental health needs of this group are similar to the general prison population. Potentially higher prevalences of PTSD and alcohol misuse may direct service provision.     

Gaze patterns to child figures reflect deviant sexual preference in child sex offenders—a first glance

Abstract

Research on non-offending heterosexual participants has indicated that men's gaze allocation reflects their sexual preference. In this exploratory pilot study we investigated whether naturalistic gaze behaviour is sensitive to deviant sexual preferences. We compared gaze patterns of convicted heterosexual child sex offenders (CSOs; n = 13) with female victims to heterosexual non-offending men (n = 13) in a task of free-viewing images of clothed male and female figures aged 10, 20 and 40 years. CSOs dedicated more fixations to the upper body of the female child than male child figures. The pattern was different for the control sample, whose gaze pattern to male and female figures could only be differentiated when viewing adult figures. CSOs showed significantly greater difference in their gaze towards the upper body of male and female children than non-offenders. Our findings provide preliminary evidence for eye-tracking as a potential method of assessing deviant sexual interest.