Digital humanities platforms set to challenge technical barriers to digital research skills development.

Digital humanists are becoming increasingly aware of the potential for much wider impact through ‘crowdscribing’ and other innovative approaches to digital research. Emma Goodwin provides further information on a new initiative DHCrowdscribe that allows early career researchers to gain from resources and expertise to support technical project development. This approach will also foster wider collaboration between the humanities and other more scientific or technical disciplines

Psychological risk factors for compulsive exercise : a longitudinal investigation of adolescent boys and girls

Compulsive exercise is associated with unhealthy outcomes and is common among eating disorder populations. This study aimed to replicate previous cross-sectional work by considering psychological characteristics as longitudinal predictors of compulsive exercise. A sample of 369 adolescents (n = 221 female, n = 148 male) completed measures of compulsive exercise, eating disorder psychopathology, obsessive–compulsiveness, perfectionism, anxiety, and depression at baseline, and a measure of compulsive exercise two years later. For boys, greater obsessive–compulsiveness and self-oriented perfectionism predicted compulsive exercise, whilst among girls only baseline compulsive exercise was a significant predictor. Compulsive exercise prevention work among boys may benefit from targeting their levels of obsessive–compulsiveness and self-perfectionism. For girls, further risk factor research into compulsive exercise is required

Column Tests of Nitrate Breakthrough Behavior in Subsurface Sediments to Understand Transport in the Root-Zone

Nitrate has become an increasingly ubiquitous pollutant in surface and groundwater, posing a threat to hu- man health and ecosystems. Nitrogen is a necessary nutrient for plant growth and is limiting in many soils. As a result, farmers often add nitrogen to soil in a usable form such as nitrate, nitrite, or ammonia through the addition of fertilizer

Then I\u27ll stop loving you

https://digitalcommons.library.umaine.edu/mmb-vp/2587/thumbnail.jp

Enthusiastic but Inconsistent: Graduate Teaching Assistants’ Perceptions of Their Role in the CURE Classroom

Despite growing evidence of positive student outcomes from course-based undergraduate research experiences (CUREs), little consideration has been given to employing graduate teaching assistants (GTAs) as CURE instructors. GTAs may be novice researchers and/or teachers and likely vary in their interest in teaching a CURE. Guided by expectancy-value theory, we explored how GTAs’ self-efficacy and values regarding teaching a CURE impact motivation and perceptions of their roles as CURE instructors. Using a multiple case study design, we interviewed nine GTAs who taught a network CURE at one research institution. Though most GTAs held a relatively high value for teaching a CURE for a range of reasons, some GTAs additionally perceived high costs associated with teaching the CURE. Through the interview data, we established three profiles to describe GTA perceptions of their role as CURE instructors: “Student Supporters,” “Research Mentors,” and “Content Deliverers.” Those implementing GTA-led CUREs should consider that GTAs likely have different perceptions of both their role in the classroom and the associated costs of teaching a CURE. The variability in GTA perceptions of CUREs implies that undergraduate students of different GTAs are unlikely to experience the CURE equivalently

Polytypism of layered MX2 materials

We revisit the problem of polytypism in layered MX2 materials, with a view to reinterpreting the phase space accessible to this family. Our starting point is to develop a simple, constructive, and compact label for the most commonly observed stacking arrangements, similar to the Glazer notation used to label tilt systems in perovskites. The key advantage of this label in the context of MX2 systems is that it contains sufficient information to generate the corresponding stacking sequences uniquely. Using a related approach, we generate a Cartesian representation of the phase space containing all possible MX2 polytypes, with the most common structures appearing as limiting cases. We argue that variation in, e.g., composition, temperature, or pressure may allow navigation of this phase space along continuous paths. This interpretation is shown to be consistent with the structural evolution of stacking-faulted MX2 systems as a function in temperature and pressure. In this way, our study highlights the potential for controlling composition/structure/property relationships among layered MX2 materials in ways that might not previously have been obvious

Eating disorder examination questionnaire : factor structure for adolescent girls and boys

Objective: To examine the factor structure of the EDE-Q among a sample of adolescents. Method: A community-based sample of 917 adolescents (522 girls and 395 boys) aged 14-18 years completed the EDE-Q version 6.0 as part of a larger study. Participants were randomly assigned to one of two subsamples to enable separate analyses. Results: A confirmatory factor analysis on the original four factor model of the EDE-Q produced an inadmissible model with a poor fit. Exploratory factor analysis using principal axis factoring produced an alternative three factor model of the EDE-Q among adolescents. The Shape and Weight Concerns, Restriction and Preoccupation and Eating Concern subscales accounted for 65% of the total variance. Subscale and global scores were significantly higher for girls than for boys. A high proportion of both girls (53.6%) and boys (30.5%) reported participating in at least one key eating disordered behaviour during the previous 28 days. Discussion: The results of this study present three new subscales (Shape and Weight Concerns, Restriction and Preoccupation and Eating Concern) which are suggested for use in future research which uses the EDE-Q with community samples of adolescents

Hybrid Local-Order Mechanism for Inversion Symmetry Breaking

Using classical Monte Carlo simulations, we study a simple statistical mechanical model of relevance to the emergence of polarisation from local displacements on the square and cubic lattices. Our model contains two key ingredients: a Kitaev-like orientation-dependent interaction between nearest neighbours, and a steric term that acts between next-nearest neighbours. Taken by themselves, each of these two ingredients is incapable of driving long-range symmetry breaking, despite the presence of a broad feature in the corresponding heat capacity functions. Instead each component results in a "hidden" transition on cooling to a manifold of degenerate states, the two manifolds are different in the sense that they reflect distinct types of local order. Remarkably, their intersection---\emph{i.e.} the ground state when both interaction terms are included in the Hamiltonian---supports a spontaneous polarisation. In this way, our study demonstrates how local ordering mechanisms might be combined to break global inversion symmetry in a manner conceptually similar to that operating in the "hybrid" improper ferroelectrics. We discuss the relevance of our analysis to the emergence of spontaneous polarisation in well-studied ferroelectrics such as BaTiO$_3$ and KNbO$_3$.Comment: 8 pages, 8 figure