Effect of ageing on phase evolution and mechanical properties of a high tungsten super-duplex stainless steel

Peer reviewedPostprin

Museum Docents’ Understanding of Interpretation

This basic interpretive qualitative study explored docents’ perceptions of their interpretive role and sought to determine how those perceptions shape docents’ practice. The conceptual frameworks of hermeneutics and symbolic interactionism inform the study. The study offers a view into the world of volunteer adult educators in non-formal education settings

Real-time Spin Systems from Lattice Field Theory

We construct a lattice field theory method for computing the real-time dynamics of spin systems in a thermal bath. This is done by building on previous work of Takano with Schwinger-Keldysh and functional differentiation techniques. We derive a Schwinger-Keldysh path integral for generic spin Hamiltonians, then demonstrate the method on a simple system. Our path integral has a sign problem, which generally requires exponential run time in the system size, but requires only linear storage. The latter may place this method at an advantage over exact diagonalization, which is exponential in both. Our path integral is amenable to contour deformations, a technique for reducing sign problems.Comment: 7 pages, 2 figures, 1 tabl

A simulator and flight study of yaw coupling in turning maneuvers of large transport aircraft

Piloted simulator study of yaw coupling in turning maneuvers of supersonic transport compared with flight test data on large variable stability jet transpor

Do Mental Health Professionals in the UK Ask about Experiences of Adversity and Respond Appropriately?

This study ascertained the extent to which mental health professionals working in adult community mental health services directly ask clients about adverse experiences, how often they are aware of those experiences, and how well they respond when such experiences do become known. The clinical records of 400 adult clients using four London community mental health teams were reviewed, using similar methodology to previous studies so as to enable comparisons. The results suggest that routine enquiry about adverse experiences is not taking place, despite this being NHS policy. Identification of adversities was poor. Only 13% of clinical records contained documentation of one or more forms of adverse experience. Only 1% showed clear evidence that service users had been asked about adversities by a clinician. This study included adverse experiences not previously studied, and documentation rates of these within clinical records was also low. The clinical records of female clients contained a higher total number of adverse experiences than males. People with a diagnosis indicative of psychosis were significantly less likely to have adverse experiences documented in their file. There was significant variation in documentation of adversities between the four services. Overall rates of response to known adversities were high, with 90.4% of clinical records containing documentation that the service user was offered some type of relevant support following disclosure of an adverse experience. There were no significant differences in the number of appropriate responses provided by mental health professionals in relation to age, diagnosis, community mental health team location or gender. Theoretical and conceptual knowledge relating to why some mental health professionals do not routinely ask about adverse experiences is discussed. Recommendations are proposed regarding the need for policies, staff training and guidelines to improve routine enquiry and responses to disclosures of adversity. Future research endeavours are recommended, linked to some of the methodological limitations of this study. Implications for both mental health services and broader societal factors are discussed

Demographic composition and projections of car use in Austria

Understanding the factors driving demand for transportation in industrialised countries is important in addressing a range of environmental issues. Previous work has identified demographic factors as important influences on demand, in addition to economic factors. While some studies applied a detailed demographic composition to analyse past developments of transportation demand, or estimated parameters based on models that include demographic variables, projections for the future have never accounted for future compositional changes in the population. In this paper, we combine cross-sectional analysis of car use in Austria with detailed household projections to explore the sensitivity of projections of car use to the specific type of demographic disaggregation employed. We find that particular demographic characteristics of households can have important effects on aggregate demand through the combined effect of differences in demand across different types of households, and changes in the future composition of the population by household type. For example, the highest projected car use--an increase of about 20 per cent between 1996 and 2046--is obtained if we apply the value of car use per household to the projected numbers of households. However, if we apply a composition that differentiates households by size, age and sex of the household head, car use is projected to increase by less than 3 per cent during the same time period. These findings suggest that the inclusion of demographic factors in transportation demand modelling should extend beyond their use in historical decompositions and as controls in model parameter estimation to explicit consideration of future demographic changes.

Pan-STARRS1 Discovery of Two Ultraluminous Supernovae at z ≈ 0.9

We present the discovery of two ultraluminous supernovae (SNe) at z ≈ 0.9 with the Pan-STARRS1 Medium Deep Survey. These SNe, PS1-10ky and PS1-10awh, are among the most luminous SNe ever discovered, comparable to the unusual transients SN 2005ap and SCP 06F6. Like SN 2005ap and SCP 06F6, they show characteristic high luminosities (M_(bol) ≈ –22.5 mag), blue spectra with a few broad absorption lines, and no evidence for H or He. We have constructed a full multi-color light curve sensitive to the peak of the spectral energy distribution in the rest-frame ultraviolet, and we have obtained time series spectroscopy for these SNe. Given the similarities between the SNe, we combine their light curves to estimate a total radiated energy over the course of explosion of (0.9-1.4) × 10^(51) erg. We find photospheric velocities of 12,000-19,000 km s^(–1) with no evidence for deceleration measured across ~3 rest-frame weeks around light curve peak, consistent with the expansion of an optically thick massive shell of material. We show that, consistent with findings for other ultraluminous SNe in this class, radioactive decay is not sufficient to power PS1-10ky, and we discuss two plausible origins for these events: the initial spin-down of a newborn magnetar in a core-collapse SN, or SN shock breakout from the dense circumstellar wind surrounding a Wolf-Rayet star

Survival strategies: a New Zealand hospitality habitual entrepreneur

The purpose of this paper is to report the findings of case study research conducted in Auckland, New Zealand in 2010. This research examined the motivators prompting a habitual entrepreneur to engage within new venture start ups within the vibrant hospitality industry. This paper focuses on explaining how and why an entrepreneur within the highly competitive hospitality industry seeks business expansion via habitual entrepreneurship during economic recession. The research involves in-depth interviews of a successful hospitality habitual entrepreneur. This paper reports on the New Zealand entrepreneur’s personal and business profile, motivations that prompt entrepreneurship, business management strategies and the wider factors affecting his success. This study provides insights into the characteristics and behaviours of habitual entrepreneurs within a New Zealand hospitality context. Therefore, this paper contributes to entrepreneurship literature by demystifying New Zealand’s unique and innovative mindset the ‘number eight wire’ mentality