Perforation of the superior vena cava during ECMO catheterization in two neonates with congenital diaphragmatic hernia: a cause of accidental death

Congenital diaphragmatic hernia (CDH) is a defect seen in approximately 1 in 3500 live births. A complication of CDH is the herniation of abdominal contents into the chest cavity through the defect, which may prevent normal intrauterine development of the lungs. The resultant pulmonary hypoplasia and pulmonary hypertension causes respiratory distress in the newborn, usually requiring some form of intervention before the defect is surgically corrected (Embryology for Surgeons. Baltimore, MD: Williams & Wilkins; 1994:491-539). Extracorporeal membrane oxygenation, which involves cannulation of the superior vena cava (SVC), is often used to manage these infants. However, the mediastinal shift that often occurs with CDH can cause an abnormal acute angulation of the SVC, which during cannulation can result in trauma and possible perforation of the SVC. We present 2 autopsy cases where the infants accidentally died as a result of extracorporeal membrane oxygenation cannulation.     

Body Disposal Patterns of Sexual Murderers: Implications for Offender Profiling

Offender profiling postulates that crime scene behavior should predict certain offender characteristics. The aim of this study is to investigate the relationship between offender characteristics, situational factors, and body disposal patterns. Sequential logistic regression analysis on a sample of 85 sexual murderers shows that those who were in a relationship at the time of the crime and who present organized psychological characteristics are more likely to move the victim’s body after the homicide. However, when the victim is older and a conflict with the offender occurred prior to the crime, the body is more likely to be left at the crime scene. Implications for offender profiling are discussed in light of the results.

Canine Population Data Generated from a Multiplex STR Kit for Use in Forensic Casework*

Abstract: Canine biological specimens are often part of the physical evidence from crime scenes. Until now, there have been no validated canine‐specific forensic reagent kits available. A multiplex genotyping system, comprising 18 short tandem repeats (STRs) and a sex‐linked zinc finger locus for gender determination, was developed for generating population genetic data assessing the weight of canine forensic DNA profiles. Allele frequencies were estimated for 236 pedigreed and 431 mixed breed dogs residing in the U.S. Average random match probability is 1 in 2 × 10³³ using the regional database and 1 in 4 × 10³⁹ using the breed dataset. Each pedigreed population was genetically distinct and could be differentiated from the mixed breed dog population but genetic variation was not significantly correlated with geographic transition. Results herein support the use of the allele frequency data with the canine STR multiplex for conveying the significance of identity testing for forensic casework, parentage testing, and breed assignments.     

Settlement of refugee women and children following the Second World War: challenges to the family

Abstract

Following the Second World War, refugees that were displaced as a result of conflict became a global concern. Many of these displaced persons were resettled under the auspices of the International Refugee Organization. Large numbers of European displaced persons settled in Australia, with significant numbers living in Queensland. The wartime and migration experiences of refugees have the potential to influence settlement experiences, and for displaced persons who settled in Queensland, these prior experiences continued to resonate within the family throughout the settlement process. Many refugee children became separated from their families, and while some were reunited, the process was lengthy and not without its difficulties. The effect of separation and loss experienced by these families dominated the post-war experience. It presented challenges to mothers, children and families as they negotiated the uncertainty of displacement and the potential for resettlement, and affected their approaches to separation and reunification. The separation and reunification of children and families played a significant role in the settlement process, influencing interactions with Australian organisations and the development of familial and social network connections during settlement. The legacy of conflict and separation continued to resonate within families and influenced perspectives of the ongoing settlement process for child refugees.     

Youth Substance Use and Body Composition: Does Risk in One Area Predict Risk in the Other?

Both substance use and obesity are prevalent among youth. As youth age, substance use rates increase and over the past three decades, obesity rates among youth have tripled. While these two factors have both short- and long-term health impacts, little research has explored how substance use and obesity among youth may be related. This study explores the bi-directional longitudinal relationships between substance use and body composition. Participants (N = 704; 50.7% female) were mostly white (86.4%) with a baseline mean age of 14.7 years. Objectively measured body composition was used to calculate body mass index z-scores (BMI z-score) and percent body fat. Cross-lagged structural equation models, accounting for clustering at the school level, were run to determine the longitudinal association between body composition and self-reported substance use (alcohol, cigarette, and marijuana), adjusting for socio-demographic characteristics, pubertal status, and weight satisfaction. Baseline alcohol use predicted decreased BMI z-score at follow-up and a similar association with percent body fat approached significance. Baseline cigarette use predicted increased percent body fat. No longitudinal associations were seen between baseline body composition and future substance use. Our results suggest that substance use contributes to subsequent body composition; however, body composition does not contribute to subsequent substance use. Continued research that explores these relationships longitudinally is greatly needed.     

What role for trade in food sovereignty? Insights from a small island archipelago

The food sovereignty movement has been gathering momentum in advocating the rights of individuals and nations to control their own food systems. Alongside this is a mounting critical engagement regarding its privileging of local food production as the means through which to achieve this goal. Adopting a place-based approach, we explore the foodways of diverse communities across a small island archipelago – the Turks and Caicos Islands in the West Indies. Based on interviews and focus groups, we unpack narratives relating to islanders’ changing food practices and aspirations. These are understood as two competing but inter-related themes of disruption and reification of current practices shaped by wider food regimes in interaction with ecological challenges. Given that conditions of historic dependency implicate the islands in a myriad of dependent trade relationships, we argue that small island economies offer, and require, unique cases for understanding how sovereign conditions for trade might be developed in line with a food sovereignty framework. We underline the importance of an inter-disciplinary focus for bringing forth a nuanced understanding of what might be required to shape more sustainable, sovereign and secure food futures. Doing so is necessarily rooted in an appreciation of islanders’ accounts of social, economic, political and ecological change over time.     

Transnational delegation in global environmental governance: When do non‐state actors govern?

Non‐state actors – including firms, non‐governmental organizations, and networks – are now a permanent fixture in environmental politics. However, we know surprisingly little about when states choose to delegate to non‐state actors through multilateral treaties. This paper provides an historical picture, tracing patterns of delegation to non‐state agents in a random sample of multilateral environmental agreements from 1902 to 2002. I introduce a new unit of analysis – the policy function – to understand what non‐state actors actually do as agents. I find that analyses of delegation are sensitive to the unit of analysis; patterns of delegation at the treaty level are very different from those at the level of individual policy functions. While overall the decision to delegate to non‐state actors – what I term transnational delegation – is rare, it has grown over time. Complex treaties, those with secretariats, and those focused on the management of nature are more apt to delegate to non‐state actors. Non‐state agents fill a small, but growing role in multilateral environmental treaties.     

Who Chooses STEM Careers? Using A Relative Cognitive Strength and Interest Model to Predict Careers in Science,Technology, Engineering,and Mathematics

Career aspirations in science, technology, engineering, and mathematics (STEM) are formulated in adolescence, making the high school years a critical time period for identifying the cognitive and motivational factors that increase the likelihood of future STEM employment. While past research has mainly focused on absolute cognitive ability levels in math and verbal domains, the current study tested whether relative cognitive strengths and interests in math, science, and verbal domains in high school were more accurate predictors of STEM career decisions. Data were drawn from a national longitudinal study in the United States (N?=?1762; 48?% female; the first wave during ninth grade and the last wave at age 33). Results revealed that in the high-verbal/high-math/high-science ability group, individuals with higher science task values and lower orientation toward altruism were more likely to select STEM occupations. In the low-verbal/moderate-math/moderate-science ability group, individuals with higher math ability and higher math task values were more likely to select STEM occupations. The findings suggest that youth with asymmetrical cognitive ability profiles are more likely to select careers that utilize their cognitive strengths rather than their weaknesses, while symmetrical cognitive ability profiles may grant youth more flexibility in their options, allowing their interests and values to guide their career decisions.     

Does Everyone’s Motivational Beliefs about Physical Science Decline in Secondary School?: Heterogeneity of Adolescents’ Achievement Motivation Trajectories in Physics and Chemistry

Students’ motivational beliefs about learning physical science are critical for achieving positive educational outcomes. In this study, we incorporated expectancy-value theory to capture the heterogeneity of adolescents’ motivational trajectories in physics and chemistry from seventh to twelfth grade and linked these trajectories to science-related outcomes. We used a cross-sequential design based on three different cohorts of adolescents (N?=?699; 51.5?% female; 95?% European American; M _ages for youngest, middle, and oldest cohorts at the first wave?=?13.2, 14.1, and 15.3 years) coming from ten public secondary schools. Although many studies claim that physical science motivation declines on average over time, we identified seven differential motivational trajectories of ability self-concept and task values, and found associations of these trajectories with science achievement, advanced science course taking, and science career aspirations. Adolescents’ ability self-concept and task values in physics and chemistry were also positively related and interlinked over time. Examining how students’ motivational beliefs about physical science develop in secondary school offers insight into the capacity of different groups of students to successfully adapt to their changing educational environments.