Soft Sphere Packings at Finite Pressure but Unstable to Shear

When are athermal soft sphere packings jammed ? Any experimentally relevant definition must at the very least require a jammed packing to resist shear. We demonstrate that widely used (numerical) protocols in which particles are compressed together, can and do produce packings which are unstable to shear - and that the probability of generating such packings reaches one near jamming. We introduce a new protocol that, by allowing the system to explore different box shapes as it equilibrates, generates truly jammed packings with strictly positive shear moduli G. For these packings, the scaling of the average of G is consistent with earlier results, while the probability distribution P(G) exhibits novel and rich scalingComment: 5 pages, 6 figures. Resubmitted to Physical Review Letters after a few change

Examining Asian and European reactions within shock advertising

This paper seeks to establish whether subjects from different cultures, in this case from Europe (Germany, France, Spain and the United Kingdom (UK)) and Asia (China and Japan), react differently when exposed to the same shock advertising. This is of relevance to advertisers/ marketers who wish to target particular groups in a population as societies continue to evolve, change and become less homogenous. This paper examines the effects that gender and cultural identities have on different ethnic groups. The current study was carried out in the UK using 115 undergraduate university students from 6 countries. The participants were exposed to 7 adverts on safe driving from 4 countries. The aim of the study was to see if the participants would react differently to the degree of shock depending on the culture portrayed within the advert. Our findings highlight that there is a correlation between gender and the environment depicted within 3 of the adverts. Furthermore, significant differences between European and Asian participants were also found within 2 of those 3 adverts. The findings accentuate the importance of cultural content within shock advertising. Thus, advertisers/ marketers need to take great care when constructing and delivering messages to multi-cultural customer bases

Correlated Counting of Single Electrons in a Nanowire Double Quantum Dot

We report on correlated real-time detection of individual electrons in an InAs nanowire double quantum dot. Two self-aligned quantum point contacts in an underlying two-dimensional electron gas material serve as highly sensitive charge detectors for the double quantum dot. Tunnel processes of individual electrons and all tunnel rates are determined by simultaneous measurements of the correlated signals of the quantum point contacts.Comment: 11 pages, 4 figures; http://stacks.iop.org/1367-2630/11/01300

Can we better understand severe mental illness through the lens of Syndemics?

Current health care systems do not sufficiently address contributors, also known as modifiable behavior factors, to severe mental illnesses (SMI). Instead treatment is focused on decreasing symptom-experience rather than reducing the detrimental effect of biological predisposition and behavioral influences on illness. Health care services and patients alike call for a more comprehensive, individual approach to mental health care, especially for people with SMI. A Syndemics framework has been previously used to identify ecological and social contributors to an HIV epidemic in the 1990s, and the same framework is transferable to mental health research to identify the relationship between contributing factors and the outcomes of SMI. Using this approach, a holistic insight into mental illness experience could inform more effective health care strategies that lessen the burden of disease on people with SMI. In this review, the components of a Syndemic framework, the scientific contributions to the topic so far, and the possible future of mental health research under the implementation of a Syndemic framework approach are examined

Children involved in team sports show superior executive function compared to their peers involved in self-paced sports

Children’s motor and cognitive functions develop rapidly during childhood. Physical activity and executive function are intricately linked during this important developmental period, with physical activity interventions consistently proving to benefit children’s executive function. However, it is less clear which type of physical activity shows the strongest associations with executive function in children. Therefore, this study compared executive function performance of children aged 8 to 12 that either participated in team sports or self-paced sports or were not involved in any kind of organized sports (non-athletes). Results demonstrate that children participating in team sports show superior executive function compared to children participating in self-paced sports and non-athletes. Importantly, children participating in self-paced sports do not outperform non-athletes when it comes to executive function. This study is the first to show that even at a very young age, team sports athletes outperform athletes from self-paced sports as well as non-athletes on a multifaceted and comprehensive test battery for executive function. Furthermore, our findings support the hypothesis that cognitively engaging physical activity, such as participation in team sports, might show stronger associations with executive functioning compared to other types of sports and physical activity

Evaluation of science as consultancy?

Le discours actuel sur les évaluations institutionnelles de la recherche s’est construit autour d’une thèse dominante : en tant que contrôle de la performance initié par l’extérieur, les évaluations sont considérées comme l’expression, et le moteur, d’une déprofessionnalisation globale de la profession académique. Les évaluateurs comme les chercheurs évalués supposent qu’ils devront ajuster leurs systèmes de valeurs et d’évaluation à des critères externes. Notre analyse empirique des procédures d’évaluation à un niveau microsociologique se distance de cette thèse, et montre que les valeurs centrales de la profession académique persistent, et continuent à structurer la prise de décision et les actions de celle-ci. Une de ces valeurs stipule que les évaluations ne sont pas seulement au service du contrôle de la performance et de la sanction, mais qu’elles apportent les conseils de collègues. Mais comment le conseil est-il possible dans un contexte de contrôle de la performance, dont les conséquences sont potentiellement graves ? Nous répondons à cette question en analysant les décisions et les actions d’évaluateurs, et de chercheurs évalués, dans le cadre de la procédure d’évaluation des instituts de recherche allemands de l’Association Leibniz.The current discourse on institutional research evaluations has been shaped by a dominant thesis. As an externally initiated form of performance monitoring, evaluations are considered to be both the expression of and drivers of a comprehensive deprofessionalization of the academic profession. Both evaluating and evaluated researchers assume they will have to adjust their value and evaluation systems in keeping with external benchmarks. Our empirical analysis of evaluation processes at a microlevel contrasts with this thesis, and shows that the academic profession’s central values persist, and continue to structure the ways in which the profession makes decisions and acts. One of these values is that evaluations should not just serve to monitor performance and sanction, but instead provide collegial consultancy and feedback. But how is consultancy possible in a performance-monitoring context whose consequences are potentially serious? We address this question by analyzing the decisions and actions of evaluating and evaluated researchers in the context of the German Leibniz Association’s evaluation procedure

Validation of computerized wheeze detection in young infants during the first months of life

Background Several respiratory diseases are associated with specific respiratory sounds. In contrast to auscultation, computerized lung sound analysis is objective and can be performed continuously over an extended period. Moreover, audio recordings can be stored. Computerized lung sounds have rarely been assessed in neonates during the first year of life. This study was designed to determine and validate optimal cut-off values for computerized wheeze detection, based on the assessment by trained clinicians of stored records of lung sounds, in infants aged <1 year. Methods Lung sounds in 120 sleeping infants, of median (interquartile range) postmenstrual age of 51 (44.5–67.5) weeks, were recorded on 144 test occasions by an automatic wheeze detection device (PulmoTrack®). The records were retrospectively evaluated by three trained clinicians blinded to the results. Optimal cut-off values for the automatically determined relative durations of inspiratory and expiratory wheezing were determined by receiver operating curve analysis, and sensitivity and specificity were calculated. Results The optimal cut-off values for the automatically detected durations of inspiratory and expiratory wheezing were 2% and 3%, respectively. These cutoffs had a sensitivity and specificity of 85.7% and 80.7%, respectively, for inspiratory wheezing and 84.6% and 82.5%, respectively, for expiratory wheezing. Inter-observer reliability among the experts was moderate, with a Fleiss’ Kappa (95% confidence interval) of 0.59 (0.57-0.62) for inspiratory and 0.54 (0.52 - 0.57) for expiratory wheezing. Conclusion Computerized wheeze detection is feasible during the first year of life. This method is more objective and can be more readily standardized than subjective auscultation, providing quantitative and noninvasive information about the extent of wheezing