Music to measure: symbolic representation in children's composition.

Eisner maintains that the arts education community needs "empirically grounded examples of artistic thinking related to the nature of the tasks students engage in, the material with which they work, the context's norms and the cues the teachers provide to advance their students' thinking" (2000, p. 217). This paper reflects on the results of collaborative action research between teachers and university researchers in New Zealand who have been investigating how children develop and refine their ideas and related skills in music. The paper focuses specifically on the results of action research in which the impact of symbolic representation on idea development and refinement in music is examined. It raises some issues and points of tension for generalist and specialist teachers when fostering creative idea development in music

Paradox and promise in joint school/university arts research

Collaborative university and school research projects are inevitably labour intensive endeavours that require the careful negotiation of trust and the joint development of critique of current practice. While this raises tension it also builds generative communities of inquiry that can enhance both theory and practice. This paper reports on an Arts project undertaken in primary classrooms between university staff and generalist teacher co-researchers focusing on children’s idea development in dance, drama, music and art. This two year project is briefly outlined and some issues that arise in school research are explored. Project collaborators need to exercise caution in their examination of practice and strive to resist premature closure. All parties need to hold the tension of apparent contradictions, being both interested (in effective Arts pedagogy) and disinterested (in order to heighten perception) so that they might ‘surprise themselves in a landscape of practice with which many are very familiar indeed’ (McWilliam 2004:14). These issues and paradoxes in collaborative research are considered alongside some particular processes that build school and university partnerships

Spiral arm triggering of star formation

We present numerical simulations of the passage of clumpy gas through a galactic spiral shock, the subsequent formation of giant molecular clouds (GMCs) and the triggering of star formation. The spiral shock forms dense clouds while dissipating kinetic energy, producing regions that are locally gravitationally bound and collapse to form stars. In addition to triggering the star formation process, the clumpy gas passing through the shock naturally generates the observed velocity dispersion size relation of molecular clouds. In this scenario, the internal motions of GMCs need not be turbulent in nature. The coupling of the clouds' internal kinematics to their externally triggered formation removes the need for the clouds to be self-gravitating. Globally unbound molecular clouds provides a simple explanation of the low efficiency of star formation. While dense regions in the shock become bound and collapse to form stars, the majority of the gas disperses as it leaves the spiral arm.Comment: 6 pages, 4 figures: IAU 237, Triggering of star formation in turbulent molecular clouds, eds B. Elmegreen and J. Palou

Exploring children's development of ideas in music and dance

Eisner maintains that the Arts education community needs ‘empirically grounded examples of artistic thinking related to the nature of the tasks students engage in, the material with which they work, the context’s norms and the cues the teacher provides to advance their students’ thinking’ (2000:217). This paper reflects on preliminary results of a collaborative research project between teachers and university researchers that is investigating how children develop and refine arts-making ideas and related skills in Dance and Music in a small sample of schools in New Zealand. Factors such as the place of repetition in the development of ideas, the relevance of offers, the place of verbal and non-verbal communication in arts idea generation, and group work as an accepted ritual of practice, are explored and discussed

Implicit self-comparisons against others could bias quality of life assessments

Objectives: To explore how patient-reported health related quality of life (HRQL) and global health status are affected by use of differing personal reference frames. We hypothesised that implicit comparisons against self at an earlier time, against healthy peers or against ill patients would greatly affect patients’ response values. Study design and setting: Patients in a randomised trial for treatment of Paget’s disease completed annual HRQL questionnaires. Supplementary questions were appended, asking the patients whether they were aware of having made implicit comparisons. Results: The majority of patients reported considering themselves a year ago (31% at baseline), themselves before becoming ill (23%) or other healthy people (24%), with similar proportions during follow up. Mean HRQL scores varied substantially according to the declared frame of reference, with differences as big as 19% of the scale score, or a standardised mean effect size of 0.74 standard deviations. Conclusion: Reported reference frames were associated with effects of similar magnitude to the differences in HRQL that are regarded as clinically important. This may be of particular concern in trials that andomise patients to management in different settings, such as treatment at home / in hospital, or surgery / chemotherapy, and might bias or obscure HRQL differences

Bargaining and Trust: The Effects of 36hr Total Sleep Deprivation on Socially Interactive Decisions

Though it is well known that sleep loss results in poor judgment and decisions, little is known about the influence of social context in these processes. Sixteen healthy young adults underwent three games involving bargaining (‘Ultimatum’ and ‘Dictator’) and trust, following total sleep deprivation (TSD) and during rested wakefulness (RW), in a repeated measures, counterbalanced design. To control for repeatability, a second group (n=16) was tested twice under RW conditions. Paired anonymously with another individual, participants made their simple social interaction decisions facing real monetary incentives. For bargaining, following TSD participants were more likely to reject unequal-split offers made by their partner, despite the rejection resulting in a zero monetary payoff for both participants. For the trust game, participants were less likely to place full trust in their anonymous partner, again affecting final payoff. Overall, we provide novel evidence that following TSD, the conflict between personal financial gain and payoff equality is focused on unfavourable inequality. This results in the rejection of unfair offers, at personal monetary cost, and the lack of full trust, which would expose one to being exploited in the interaction. As such, we suggest that within a social domain a rational decision may not prevail over more emotional options following TSD, which has fundamental consequence for real-world decision making involving social exchange. Key Words: Sleep loss, trust, bargaining, social preference, interaction

Do lemurs know when they could be wrong? An investigation of information seeking in three species of lemur (<i>Lemur catta, Eulemur rubriventer, </i>and<i> Varecia variegata</i>)

Sixteen lemurs, including representatives from three species (Lemur catta, Eulemur rubriventer, Varecia variegata), were presented with a food seeking task where information about the rewards location, in one of two plastic tubes, was either known or not known. We evaluated whether lemurs would first look into the tube prior to making a choice. This information-seeking task aimed to assess whether subjects would display memory awareness, seeking additional information when they became aware they lacked knowledge of the rewards location. We predicted lemurs would be more likely to look into the tube when they had insufficient knowledge about the rewards position. Lemurs successfully gained the reward on most trials. However, they looked on the majority of trials regardless of whether they had all the necessary information to make a correct choice. The minimal cost to looking may have resulted in checking behaviour both to confirm what they already knew and to gain knowledge they did not have. When the cost of looking increased (elevating end of tube requiring additional energy expenditure to look inside - Experiment 2), lemurs still looked into tubes on both seen and unseen trials; however, the frequency of looking increased when opaque tubes were used (where they could not see the rewards location after baiting). This could suggest they checked more when they were less sure of their knowledge state

Developing non-verbal ways of knowing in dance: Collaborative school / university action research.

Gardner (1983, 1993) has long argued that education privileges certain intelligences, primarily the linguistic and the logical-mathematical. As the arts tend to emphasise ways of knowing outside these intelligences, their marginalised status is exacerbated. A recent two-year project in eight primary schools on dance, drama, music and visual art found that the non-verbal aspects of each art form warranted serious attention to investigate what it means to learn in the arts. In this paper we describe and discuss the results of an aspect of action research in dance from this larger research project. We demonstrate how movement can be used as the primary expressive mode of communication, as opposed to privileging the spoken word. Through the use of powerpoint and video, we provide an intriguing and innovative model for providing non-verbal feedback and feed forward in the dance classroom

Shocks, cooling and the origin of star formation rates in spiral galaxies

Understanding star formation is problematic as it originates in the large scale dynamics of a galaxy but occurs on the small scale of an individual star forming event. This paper presents the first numerical simulations to resolve the star formation process on sub-parsec scales, whilst also following the dynamics of the interstellar medium (ISM) on galactic scales. In these models, the warm low density ISM gas flows into the spiral arms where orbit crowding produces the shock formation of dense clouds, held together temporarily by their external pressure. Cooling allows the gas to be compressed to sufficiently high densities that local regions collapse under their own gravity and form stars. The star formation rates follow a Schmidt-Kennicutt \Sigma_{SFR} ~ \Sigma_{gas}^{1.4} type relation with the local surface density of gas while following a linear relation with the cold and dense gas. Cooling is the primary driver of star formation and the star formation rates as it determines the amount of cold gas available for gravitational collapse. The star formation rates found in the simulations are offset to higher values relative to the extragalactic values, implying a constant reduction, such as from feedback or magnetic fields, is likely to be required. Intriguingly, it appears that a spiral or other convergent shock and the accompanying thermal instability can explain how star formation is triggered, generate the physical conditions of molecular clouds and explain why star formation rates are tightly correlated to the gas properties of galaxies.Comment: 13 pages, 12 figures. MNRAS in pres

Implications for welfare, productivity and sustainability of the variation in reported levels of mortality for laying hen flocks kept in different housing systems: A meta-analysis of ten studies

Data from ten sources comprising 3,851 flocks were modelled to identify variation in levels of mortality in laying hens. The predicted increase with age was curvilinear with significant variation between the seven breed categories. Mortality was higher in loose housing systems than in cages and variable within system, confirming previous reports. Cumulative mortality (CM) was higher in flocks with intact beaks (χ2 = 6.03; df 1; p = 0.014) than in those with trimmed beaks. Most data were available for free-range systems (2,823 flocks), where producer recorded CM at 60–80 weeks of age averaged 10% but with a range from 0% to 69.3%. Life cycle assessment showed that the main effect of increased levels of hen mortality is to increase the relative contribution of breeding overheads, so increasing environmental burdens per unit of production. Reducing CM to levels currently achieved by the 1st quartile could reduce flock greenhouse gas emissions by as much as 25%. Concurrently this would enhance hen welfare and better meet the expectation of egg consumers. More research to understand the genetic x environment interaction and detailed records of the causes of mortality is required so that improved genotypes can be developed for different systems and different breeds can be better managed within systems