Density functional theory of the trapped Fermi gas in the unitary regime

We investigate a density-functional theory (DFT) approach for an unpolarized trapped dilute Fermi gas in the unitary limit . A reformulation of the recent work of T. Papenbrock [Phys. Rev. A, {\bf 72}, 041602(R) (2005)] in the language of fractional exclusion statistics allows us to obtain an estimate of the universal factor, $\xi_{3D}$, in three dimensions (3D), in addition to providing a systematic treatment of finite-$N$ corrections. We show that in 3D, finite-$N$ corrections lead to unphysical values for $\xi_{3D}$, thereby suggesting that a simple DFT applied to a small number of particles may not be suitable in 3D. We then perform an analogous calculation for the two-dimensional (2D) system in the infinite-scattering length regime, and obtain a value of $\xi_{2D}=1$. Owing to the unique properties of the Thomas-Fermi energy density-functional in 2D our result, in contrast to 3D, is {\em exact} and therefore requires no finite-$N$ corrections

Discussion

Since the start of large-scale waves of mobilisation in 2011, the importance of identity in the study of collective action via computer-mediated communication (CMC) has been a source of contention. Hence, our research sets out to systematically review and synthesise empirical findings on identity and collective action via CMC from 2012 to 2016. We found that the literature on the topic is broad and diverse, with contributions from multiple disciplines and theoretical and methodological approaches. Based on our findings, we provide directions for future research and propose the adoption of an integrative approach that combines the study of identity and networks to advance our understanding of collective action via CMC. This review contributes to the crossroad of social movement, collective action, communication and media studies. Our results also have practical implications for the organisation of collective action in a society characterised by the pervasive influence of CMC

Treatment of osteoporosis: why, whom, when and how to treat

The document attached has been archived with permission from the editor of the Medical Journal of Australia. An external link to the publisher’s copy is included. See page 7 of PDF for this item.B E Christopher Nordin, Allan G Nee

Dance & Down Syndrome: Parental Perceptions on Dance and Movement-Based Interventions

This qualitative phenomenological study was designed to identify parent or guardian perceptions on the benefits of dance and movement-based interventions for their child who has Down syndrome. Individuals with Down syndrome face limitations in social-emotional skills, physical skills, and life skills, and research on the benefits of dance and movement-based interventions demonstrated some evidence of improvements in these skills. Researchers utilized a parent focus group in order to gain insight into how dance impacts their children with Down syndrome. A number of themes emerged from the data analysis process including improved movement, psychological well-being, and routine and retention. The theme of improved movement included concepts such as motor planning, balance, coordination, exercise, and increased strength and tone. The theme of psychological well-being included increased happiness, connecting with typically developing peers, and a sense of belonging. The theme of routine and retention included ideas about structure, routine, and learning and applying skills. The implications for dance and movement-based intervention in the field of occupational therapy are discussed, as well as suggestions for further research studies on this topic

How does private adaptation motivation to climate change vary across cultures? Evidence from a meta-analysis

© 2020 The Authors Natural hazards, exacerbated by climate change, increasingly affect societies worldwide. The accelerating risks entail that private adaptation complement more traditional public climate change adaptation measures. Culture plays an important role in framing how individuals experience hazards and behave toward them. Yet, empirical research explicitly measuring whether and how climate change adaptation varies across cultures is lacking. To address this gap, we collect meta-analytic data on factors motivating individual flooding adaptation from 25 countries and more than 50 publications. Employing Hofstede's Cultural Rankings as a metric of national culture, we model the effect of culture on adaptation motivation of individual households using meta-regression analysis. We find a number of statistically significant relationships between culture and factors motivating private climate change adaptation. Hence, cultural context is vital to consider when designing and implementing climate change adaptation policies, simulating the uptake of individual hazard prevention measures, or integrating private adaptation in assessing costs of climate change in integrated assessment models. These findings are among the first to provide empirical evidence on the interaction effects between culture and private climate change adaptation motivation