128 resultados para Circumstellar matter


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Background Despite good policy intentions, people with intellectual disability continue to be socially excluded. Social geographers suggest the potential of self-authored spaces as catalysts for social inclusion. One such space, self-advocacy, is commonly perceived as part of a political movement for social change rather than a vehicle for social inclusion of its members. This paper investigated what involvement in self-advocacy has meant to long-term members of a self-advocacy group in Victoria, Australia. Methods In-depth interviews were conducted with 12 self-advocates about their reflections on involvement in the group. These data together with the commentary of 5 self-advocates during interviews with 18 self-advocacy supporters about their recollections of involvement in the group were transcribed and analysed thematically. Findings Through their involvement in self-advocacy, members of the group had gained a sense of belonging, social connections, and purposeful occupation, which included paid project work, lobbying, and organisational leadership and management. Conclusions This study suggests that self-advocacy groups can be places that foster social inclusion, potentially offering “membership” of an exclusive group, a wider social movement and of mainstream society.

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In this paper we take the forward premium and exchange rate literature forward by asking whether data frequency matters in that relationship. We use four frequencies of data, namely, quarterly, monthly, weekly and daily. We find that data frequencies matter both statistically and economically. More specifically, we document that investors prefer the forward premium model over a constant returns model in most countries when models are estimated using daily, weekly, and quarterly data, but not when using monthly data.

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Abnormalities within white matter (WM) have been identified in autism spectrum disorder (ASD). Although there is some support for greater neurobiological deficits among females with ASD, there is little research investigating sex differences in WM in ASD. We used diffusion tensor imaging (DTI) to investigate WM aberration in 25 adults with high-functioning ASD and 24 age-, sex- and IQ-matched controls. Tract-based spatial statistics (TBSS) was used to explore differences in WM in major tract bundles. The effects of biological sex were also investigated. TBSS revealed no differences in fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD), or axial diffusivity (AD) between groups. There were no effects of biological sex. We consider whether methodological differences between past studies have contributed to the highly heterogeneous findings in the literature. Finally, we suggest that, among a high-functioning sample of adults with ASD, differences in WM microstructure may not be related to clinical impairment.

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This paper examines how the institutional features of emerging economies (i.e., government ownership, political connections, and market reform) influence CEO pay-dispersion incentives. Consistent with our expectation, we find that CEO pay dispersion generally provides a tournament incentive in China's emerging market, as it is positively associated with firm performance. In addition, tournament incentives are weaker where firms are controlled by the government and where the CEO is politically connected, but it became stronger after the China's split-share structure reforms. Further, we find that in state controlled firms the satisfaction gained by meeting multiple economic and social goals largely reduces the effectiveness of tournament incentives, while the managerial agency problems inherent in private firms might mitigate them.

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This paper is about dogs and stories. As a communication studies academic and owner of a certified therapy dog, I noticed that something interesting happens when people interact with my dog. In some (most) cases, the simple act of patting and talking with the dog triggers the desire to share stories from their own ‘pet history’ – starting with simple catalogue of the animals they have owned, next, moving on to accounts of the life events that have occurred with and because of these pets and finally, sharing how they felt as a result.

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Silver hexynyl cluster cations, [(C4H9CCAg)nAg]+, exhibit a rich unimolecular chemistry that is dependant on the cluster size, n (1–5), cluster fragmentation (for all n > 1); C–C bond coupling (n = 3 & 4); C–H bond activation with comcomitant silver hydride formation (n = 1 & 4); C–C bond activation (n = 1 & 4).

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Maritime pilotage is a demanding occupation where pilots are required to perform complex procedures in sometimes unfamiliar working environments. The psychological (e.g., stress) and physical demands (e.g., reduced sleep, boarding, and departing vessels) may over time have a damaging effect on pilots’ physical and mental health. This presentation will focus on findings from a recent systematic review on maritime pilots’ health and well-being.
Materials and methods
The databases Academic search complete, MEDLINE and MEDLINE Complete, PsycINFO, PsycARTICLES, PubMed, and ScienceDirect were searched from the earliest available record until 1 May 2015. From an initial pool of 167 manuscripts retrieved, only 18 were peer-reviewed original research and discussed topics associated with maritime pilots’ health and well-being.
Results
Twenty-nine factors associated with maritime pilot health and well-being were identified, and were categorised into physical (n=14), psychosocial (n=8), and workplace issues (n=7). The most commonly investigated factors were blood pressure or heartrate, sleep or fatigue, smoking and alcohol consumption, perceived stress, and shift duration or cycle.
Conclusion
Results from the review suggest that the number of modern-day pilots presenting as overweight or obese, and that the prevention of CVD and associated cardio-metabolic risk factors is of paramount importance. In presenting the findings, recommendations for multidisciplinary approaches to better quantify the impact of maritime pilotage on long-term health and well-being will be made.