Exciton Condensation in a Holographic Double Monolayer Semimetal

The formation of intra-layer and inter-layer exciton condensates in a model of a double monolayer Weyl semi-metal is studied in the strong coupling limit using AdS/CFT duality. We find a rich phase diagram which includes phase transitions between inter-layer and intra-layer condensates as the charge densities and the separation of the layers are varied. The tendency to inter-layer condensation is strongest when the charge densities are balanced so that the weak coupling electron and hole Fermi surfaces would be nested. For systems with multiple species of massless Fermions, we find a novel phase transition where the charge balance for nesting occurs spontaneously.Comment: 4 pages, 2 figure

Forming relationships in Australia: qualitative insights into a process important to human wellbeing

Drawing on in-depth interviews conducted during 2002-03 for the Australian Family Formation Decisions (AFFD) Project, this paper probes the relationship formation experiences of 115 women, men and couples of family-forming age living in eastern Australia. Contemporary relationship formation is characterized by a mixture of ambivalence and resignation to having limited control over the process on the one hand ('if it happens it happens'), and urgency on the other, especially among women seeking to fulfil maternal ambitions in their thirties after prioritizing other things earlier in their adult lives. For most the process of partnering involves trial and error, with timing - finding someone whose expectations of a relationship match one's own - posing a major challenge. It gives rise to a common phenomenon, the 'too soon syndrome', where relationships with many positive attributes are abandoned because one party perceives the other as too keen to 'settle down', and/or himself or herself as not ready to do so. The paper also examines impediments to partnering, including traditional ones like shyness; negative trial-and-error experiences; the demands of study and career establishment; pursuit of agendas emphasizing travel and enjoyment; sole parenthood; and parental marriage breakdown. A framework is provided by Beck's (1992) concept of reflexive modernization, and his associated proposition that life has become highly individualized with an emphasis on creating 'do-it-yourself' biographies

Older care-home residents as collaborators or advisors in research: a systematic review

Background: patient and public involvement (PPI) in research can enhance its relevance. Older care-home residents are often not involved in research processes even when studies are care-home focused. Objective: to conduct a systematic review to find out to what extent and how older care-home residents have been involved in research as collaborators or advisors. Methods: a systematic literature search of 12 databases, covering the period from 1990-September 2014 was conducted. A lateral search was also carried out. Standardised inclusion criteria were used and checked independently by two researchers. Results: 19 reports and papers were identified relating to 11 different studies. Care-home residents had been involved in the research process in multiple ways. Two key themes were identified: (i) the differences in residents’ involvement in small-scale and large-scale studies, (ii) the barriers to and facilitators of involvement. Conclusions: small-scale studies involved residents as collaborators in participatory action research, whereas larger studies involved residents as consultants in advisory roles. There are multiple facilitators of and barriers to involving residents as PPI members. The reporting of PPI varies. While it is difficult to evaluate the impact of involving care-home residents on the research outcomes, impact has been demonstrated from more inclusive research processes with care-home residents. The review shows that older care-home residents can be successfully involved in the research process

Children's Perceptions of Their Teacher's Responses to Students' Peer Harassment: Moderators of Victimization-Adjustment Linkages

This is the publisher's version, also available electronically from http://www.jstor.org/stable/23098073?seq=1#page_scan_tab_contents.Children’s relational schemas have been found to account for, and moderate, links between peer victimization and psychosocial difficulties. The present study extends this research by examining whether children’s mental representations of their teachers’ responses to students’ peer harassment moderate associations between peer victimization and internalizing distress and school avoidance. Data were collected from 264 children (124 boys and 140 girls) in the fourth, fifth, and sixth grades. A number of significant victimization × perceived teacher response interactions emerged, although the nature of these moderated associations often varied by children’s sex. For boys, victimization was associated with greater internalizing distress only when they viewed their teacher as advocating assertion, avoidance, or independent coping. In fact, perceiving teachers to use low levels of these strategies appeared to protect victimized boys from internalizing problems. In comparison, although girls similarly evidenced greater internalizing problems when they viewed the teacher as using these strategies, no evidence was found of a buffering effect at low levels of perceiving the teacher as advocating avoidance, assertion, or independent coping. The results highlight the role of perceptions of the teacher in explicating individual differences in adjustment problems associated with peer victimization

Confidence amongst multidisciplinary professionals in managing paediatric rheumatic disease in Australia

Objective. Interprofessional collaboration is a crucial component of care for children with rheumatic disease. Interprofessional care, when delivered appropriately, prevents disability and improves long-term prognosis in this vulnerable group. Methods. The aim of this survey was to explore allied health professionals’ and nurses’ confidence in treating paediatric rheumatology patients. Results. Overall, 117 participants were recruited, 77.9% of participants reported being “not confident at all,” “not confident,” or “neutral” in treating children with rheumatic diseases (RD) despite 65.1% of participants reporting having treated >1 paediatric rheumatology case in the past month. Furthermore, 67.2% of participants felt their undergraduate education in paediatric rheumatology was inadequate. “Journals” or “texts books” were used by 49.3% of participants as their primary source of continuing professional development (CPD) and 39.3% of participants indicated that they did not undertake any CPD related to paediatric rheumatology. Small group and online education were perceived to be potentially of “great benefit” for CPD. Conclusion. This paper highlights allied health professionals’ and nurses’ perceived inadequacy of their undergraduate education in paediatric RD and their low confidence in recognising and treating RD. Undergraduate and postgraduate education opportunities focusing on interprofessional collaboration should be developed to address this workforce deficiency

The Obscured Fraction of AGN in the XMM-COSMOS Survey: A Spectral Energy Distribution Perspective

The fraction of AGN luminosity obscured by dust and re-emitted in the mid-IR is critical for understanding AGN evolution, unification, and parsec-scale AGN physics. For unobscured (Type-1) AGN, where we have a direct view of the accretion disk, the dust covering factor can be measured by computing the ratio of re-processed mid-IR emission to intrinsic nuclear bolometric luminosity. We use this technique to estimate the obscured AGN fraction as a function of luminosity and redshift for 513 Type-1 AGN from the XMM-COSMOS survey. The re-processed and intrinsic luminosities are computed by fitting the 18-band COSMOS photometry with a custom SED-fitting code, which jointly models emission from: hot-dust in the AGN torus, the accretion disk, and the host-galaxy. We find a relatively shallow decrease of the luminosity ratio as a function of Lbol, which we interpret as a corresponding decrease in the obscured fraction. In the context of the receding torus model, where dust sublimation reduces the covering factor of more luminous AGN, our measurements require a torus height which increases with luminosity as h ~ Lbol^{0.3-0.4}. Our obscured fraction-luminosity relation agrees with determinations from SDSS censuses of Type-1 and Type-2 quasars, and favors a torus optically thin to mid-IR radiation. We find a much weaker dependence of obscured fraction on 2-10 keV luminosity than previous determinations from X-ray surveys, and argue that X-ray surveys miss a significant population of highly obscured Compton-thick AGN. Our analysis shows no clear evidence for evolution of obscured fraction with redshift.Comment: 33 pages, 24 figures, ApJ accepte

Oral Communication: Generating Network Data for Automated Unit Test Generation

Although automated unit test generation techniques can in principle generate test suites that achieve high code coverage, in practice this is often inhibited by the dependence of the code under test on external resources. In particular, a common problem in modern programming languages is posed by code that involves networking (e.g., opening a TCP listening port). In order to generate tests for such code, we describe an approach where we mock (simulate) the networking interfaces of the Java standard library, such that a search-based test generator can treat the network as part of the test input space.Sociedad Argentina de Informática e Investigación Operativ

What\u27s in a Name?”: The Use of Instructional Design in Overcoming Terminology Barriers Associated with Dark Patterns

Many users experience a phenomena when they are shopping on-line where they feel they are being pressured to either spend more money than they had intended, or to share more personal data than they wanted. In academic circles we use the term “Dark Patterns” to describe these deceptive practices, and categorize them as being within the discipline of User Experience (Narayanan, 2020). As academics it is important to name phenomena, and to categorize them, so that we can discuss and analyze these issues. However, this particular topic is one that all users should be made aware of when interacting online, and therefore these ideas should be explained in a manner to ensure that the terminology does not prove to be a barrier to understanding these concepts (Gordon, et al., 2014). To overcome the terminological barriers, this research proposes the use of a model of instructional design called Elaboration Theory, developed by Charles Reigeluth (1999). Crucially this model proposes that when explaining a new concept, the last thing the instructor should do is to mention the name of the concept, they should first explain the concept, and at the very end of an instructional session, say “And by the way, this concept is called…”. This model also contends that the instructor should explain the concept in simple terms first, and then continue to elaborate on that explanation throughout the teaching process (adhering to the notion of a Spiral Curriculum). It also suggests that the content should be summarized at each level of explanation, and analogies should be used to help clarify concepts. Therefore, this research proposes the redevelopment of existing teaching content about Dark Patterns, where these patterns are retitled as “Online Shopping Tricks”, and the teaching content is redesigned to begin with a simple explanation of Dark Patterns and to elaborate with more complexity at a number of levels of explanation, and including summarizers and analogies at the end of each stage. This content will be subsequently piloted on a number of non-academic participants to determine whether or not this redesign process has been effective

How can social enterprises impact health and wellbeing?

Purpose -The objective of this paper is to examine the impacts of social enterprise on individual and community health and well-being. It focuses on community food initiatives, their impact on the social determinants of health and the influence of structure on their outcomes. Design – Using an interpretive qualitative approach through case studies focused on two community food social enterprises, the research team conducted observations, interviews and ad-hoc conversations. Findings - Researchers found that social enterprises impacted all layers of the social determinants of health model but that there was greater impact on individual lifestyle factors and social and community networks. Impact at the higher socio-economic, cultural and environmental layer was more constrained. There was also evidence of the structural factors both enabling and constraining impact at all levels. Implications – This study helps to facilitate understanding on the role of social enterprises as a key way for individuals and communities to work together to build their capabilities and resilience when facing health inequalities. Building upon previous work, it provides insight into the practices, limitations and challenges of those engaged in encouraging and supporting behavioural changes. Value - The paper contributes to a deeper insight of the use, motivation and understanding of social enterprise as an operating model by community food initiatives. It provides evidence of the impact of such social enterprises on the social determinants of health and uses structuration theory (Giddens, 1984) to explore how structure both influences and constrains the impact of these enterprises