Gender Reflections: a Reconsideration of Pictish Mirror and Comb Symbols

The interpretation of prehistoric iconography is complicated by the tendency to project contemporary male/female gender dichotomies into the past. Pictish monumental stone sculpture in Scotland has been studied over the last 100 years. Traditionally, mirror and comb symbols found on some stones produced in Scotland between AD 400 and AD 900 have been interpreted as being associated exclusively with women and/or the female gender. This thesis re-examines this assumption in light of more recent work to offer a new interpretation of Pictish mirror and comb symbols and to suggest a larger context for their possible meaning. Utilizing the Canmore database, 272 Pictish monumental sculpture were contextually compared with each other in light of archaeological and historical data. Mirrors and combs appear together or the mirror and comb individually appear on 66 (24.3%) stones. Of these, only eight (2.9%) sculptures are depicted with human figures. The results of this analysis suggest that the mirror and comb symbols were not associated exclusively with women but rather represent actual objects imbued with special meaning as well as symbols of particular lineages and their association with specific sociopolitical roles in Pictish society

Preventable deaths among youth in South Africa: Measuring life expectancy in the absence of non-communicable diseases and its implications for the healthcare system

Background. Non-communicable diseases (NCDs) cause premature mortality among youth. Associated with lifestyle and behavioural choices, these diseases and deaths can and should be prevented among young people. This article presents data showing the gains in life expectancy among youth in the absence of NCD causes of death.Objectives. To estimate the levels of NCD mortality among youth (15 - 24 years of age) in South Africa (SA) and show the current and projected additional years of life gained with the elimination of heart disease, cancer and diabetes.Methods. This was a cross-sectional study using 20 years of death notification forms from SA (1997 - 2016). The data were nationally representative and the sample was 62 395 youth deaths (age 15 - 24 years) from the selected NCDs. Cause-specific mortality rates, expressed as percentages, were estimated by age group and sex. Cause-deleted life-table techniques were used to estimate current and projected life expectancy (ex) and life expectancy in the absence of specific NCDs (e–ix).Results. Death rates from NCDs are increasing over time among youth. Total death rates from cancer increased from 1.09% in 1997 - 2001 to 1.51% in 2012 - 2016. Female death rates from heart disease are almost double those for males. The number of additional years of life gained with elimination of these causes ranges from 2.2 to 10.3. Projected life expectancies show that males could gain as much as 1 additional year and females 1.06 years by 2035.Conclusions. Urgent action needs to be taken to prevent further mortality from non-communicable causes among youth. The results of this study are important to the SA healthcare system and to public health practitioners whose aim is to reduce the strain on public resources and reduce mortality among youth. Future studies should estimate the extent of NCD mortality in households and communities with the aim of developing macro-level interventions.

Brief trauma therapy for occupational trauma-related PTSD/CPTSD in UK police

BACKGROUND: Police are frequently exposed to occupational trauma, making them vulnerable to post-traumatic stress disorder (PTSD) and other mental health conditions. Through personal and occupational trauma police are also at risk of developing Complex PTSD (CPTSD), associated with prolonged and repetitive trauma. Police Occupational Health Services require effective interventions to treat officers experiencing mental health conditions, including CPTSD. However, there is a lack of guidance for the treatment of occupational trauma. AIMS: To explore differences in demographics and trauma exposure between police with CPTSD and PTSD and compare the effectiveness of brief trauma-focused therapy between these diagnostic groups. METHODS: Observational cohort study using clinical data from the Trauma Support Service, providing brief trauma-focused therapy for PTSD (cognitive behavioural therapy/eye movement desensitization and reprocessing) to UK police officers. Demographics, trauma exposure, baseline symptom severity and treatment effectiveness were compared between police with PTSD and CPTSD. Changes in PTSD, depression and anxiety symptoms were used to measure treatment effectiveness. RESULTS: Brief trauma therapy reduced symptoms of PTSD, depression and anxiety. Treatment effectiveness did not differ between CPTSD and PTSD groups. Police with CPTSD exposed to both primary and secondary occupational trauma had poorer treatment outcomes than those exposed to a single occupational trauma type. CONCLUSIONS: Brief trauma-focused interventions are potentially effective in reducing symptoms of PTSD, depression and anxiety in police with CPTSD and PTSD. Further research is needed to establish whether additional CPTSD symptoms (affect dysregulation, self-perception and relational difficulties) are also reduced

Talking to Others About Sexual Assault: A Narrative Analysis of Survivors' Journeys

Previous research suggested the benefits for sexual assault survivors to talk about their trauma and its mental health implications, but it remained unclear what steps sexual assault survivors need to take to be able to have these conversations. To address this gap in the literature, this study aims to explore the journeys of sexual assault survivors with the use of narrative interviews to retain the richness of the data. This study reports the findings of a narrative analysis of the accounts of six female sexual assault survivors aged between 20 and 38. The analysis provides an individual case profile for each participant, the core aspects and tone of each narrative, and a cross-case analysis. The cross-case analysis reveals an overarching theme of “the bumpy journey” within which the individual difficulties encountered are examined. The analysis also reveals the two main factors that motivated the participant to strive to make a difference for other sexual violence survivors and to improve their mental health through talking about their experiences. The implications for services providing continuous and long-term support to sexual assault survivors and clinical practices are discussed

Flipping an Academic Library Collection: A Path to a Global Open Scholarly Commons

In late 2017, the University of Massachusetts Amherst Libraries participated in the David Lewis and Michael Roy “2.5% Commitment and Open Data Collection Tool Project.” This exercise provided a benchmark of collection and infrastructure investments to date, and it brought into focus the opportunity to articulate the Libraries’ intentions for their collections going forward. The UMass Amherst Libraries provide a case study of an academic library collection that is pivoting from materials produced by proprietary publishers to a mix of investments in unique and special collections; open access publishing, content and infrastructure; and materials published through traditional channels

Accurate Noise Projection for Reduced Stochastic Epidemic Models

We consider a stochastic Susceptible-Exposed-Infected-Recovered (SEIR) epidemiological model. Through the use of a normal form coordinate transform, we are able to analytically derive the stochastic center manifold along with the associated, reduced set of stochastic evolution equations. The transformation correctly projects both the dynamics and the noise onto the center manifold. Therefore, the solution of this reduced stochastic dynamical system yields excellent agreement, both in amplitude and phase, with the solution of the original stochastic system for a temporal scale that is orders of magnitude longer than the typical relaxation time. This new method allows for improved time series prediction of the number of infectious cases when modeling the spread of disease in a population. Numerical solutions of the fluctuations of the SEIR model are considered in the infinite population limit using a Langevin equation approach, as well as in a finite population simulated as a Markov process.Comment: 38 pages, 10 figures, new title, Final revision to appear in Chao

Risk factors for complex posttraumatic stress disorder in UK police

Background: Police officers are frequently exposed to distressing and dangerous situations, increasing their risk of posttraumatic stress disorder (PTSD) and complex PTSD (C-PTSD). Research examining C-PTSD in police officers is sparse, particularly examination of the occupational risk factors for trauma symptoms. Aims: This study aimed to examine the prevalence and risk factors for PTSD and C-PTSD in UK police officers. Methods: A cross-sectional study was conducted using psychological health surveillance data from the UK National Police Wellbeing Service. Police officers were either from high-risk areas of work or had been referred for screening by occupational health practitioners regarding psychological distress. The primary outcome for this study was a positive screening of either PTSD or C-PTSD, measured using the International Trauma Questionnaire. A range of occupational, clinical and lifestyle factors was examined to establish their role as potential risk factors for PTSD and C-PTSD. Results: In total, 2444 UK police officers were included, with 89% from high-risk areas of work. A prevalence of 3% for PTSD and 2% for C-PTSD was found in police officers from high-risk areas of work. Higher work stress and lower manager support were found to increase the odds of C-PTSD but not PTSD. Higher personal trauma history increased the risk for PTSD and C-PTSD equally. Conclusions: Work-related occupational factors increased the odds of PTSD and C-PTSD in police officers, which could be important risk factors for trauma symptoms within police officers. Efforts should be made to improve the working environment of police officers to help improve their psychological well-being

Switching barrier scaling near bifurcation points for non-Gaussian noise

We study noise-induced switching of a system close to bifurcation parameter values where the number of stable states changes. For non-Gaussian noise, the switching exponent, which gives the logarithm of the switching rate, displays a non-power-law dependence on the distance to the bifurcation point. This dependence is found for Poisson noise. Even weak additional Gaussian noise dominates switching sufficiently close to the bifurcation point, leading to a crossover in the behavior of the switching exponent

Generalised coherent point drift for group-wise registration of multi-dimensional point sets

In this paper we propose a probabilistic approach to group-wise registration of unstructured high-dimensional point sets. We focus on registration of generalised point sets which encapsulate both the positions of points on surface boundaries and corresponding normal vectors describing local surface geometry. Richer descriptions of shape can be especially valuable in applications involving complex and intricate variations in geometry, where spatial position alone is an unreliable descriptor for shape registration. A hybrid mixture model combining Student’s t and Von-Mises-Fisher distributions is proposed to model position and orientation components of the point sets, respectively. A group-wise rigid and non-rigid registration framework is then formulated on this basis. Two clinical data sets, comprising 27 brain ventricle and 15 heart shapes, were used to assess registration accuracy. Significant improvement in accuracy and anatomical validity of the estimated correspondences was achieved using the proposed approach, relative to state-of-the-art point set registration approaches, which consider spatial positions alone

Anatomically Constrained Video-CT Registration via the V-IMLOP Algorithm

Functional endoscopic sinus surgery (FESS) is a surgical procedure used to treat acute cases of sinusitis and other sinus diseases. FESS is fast becoming the preferred choice of treatment due to its minimally invasive nature. However, due to the limited field of view of the endoscope, surgeons rely on navigation systems to guide them within the nasal cavity. State of the art navigation systems report registration accuracy of over 1mm, which is large compared to the size of the nasal airways. We present an anatomically constrained video-CT registration algorithm that incorporates multiple video features. Our algorithm is robust in the presence of outliers. We also test our algorithm on simulated and in-vivo data, and test its accuracy against degrading initializations.Comment: 8 pages, 4 figures, MICCA