Singing and companionship in the Hawthorn University of the Third-Age Choir, Australia

The international University of the Third Age (U3A) embodies the principles of lifelong learning and personal fulfilment amongst members. The research reported in this article focused on the Choir of the U3A Hawthorn, Melbourne, Australia and the benefits perceived by members undertaking this active music engagement in non-competitive choral singing. This small-scale phenomenological qualitative case study is part of a wider study of active arts engagement by older people that began in 2008. This study was undertaken in 2013 and revealed that participants decided to join the group for a range of factors including a positive attitude to singing, convenience and a desire for social connectedness. Those interviewed considered ongoing choir membership an effective use of leisure time that also provided opportunities for shared learning and personal validation. The data were analysed using Interpretative Phenomenological Analysis (IPA) and are reported under two themes: music engagement and social connections. Membership of the Hawthorn U3A choir provided participants opportunities for friendship, companionship, happiness, a sense of belonging and acceptance.

A genetic fuzzy system to model pedestrian walking path in a built environment

A study on the pedestrian's steering behaviour through a built environment in normal circumstances is presented in this paper. The study focuses on the relationship between the environment and the pedestrian's walking trajectory. Owing to the ambiguity and vagueness of the relationship between the pedestrians and the surrounding environment, a genetic fuzzy system is proposed for modelling and simulation of the pedestrian's walking trajectory confronting the environmental stimuli. We apply the genetic algorithm to search for the optimum membership function parameters of the fuzzy model. The proposed system receives the pedestrian's perceived stimuli from the environment as the inputs, and provides the angular change of direction in each step as the output. The environmental stimuli are quantified using the Helbing social force model. Attractive and repulsive forces within the environment represent various environmental stimuli that influence the pedestrian's walking trajectory at each point of the space. To evaluate the effectiveness of the proposed model, three experiments are conducted. The first experimental results are validated against real walking trajectories of participants within a corridor. The second and third experimental results are validated against simulated walking trajectories collected from the AnyLogic® software. Analysis and statistical measurement of the results indicate that the genetic fuzzy system with optimised membership functions produces more accurate and stable prediction of heterogeneous pedestrians' walking trajectories than those from the original fuzzy model. © 2014 Elsevier B.V. All rights reserved.

All signals are not equal: acoustic signalling of individuality, sex and breeding status in a cooperative breeder

Repeated interactions between individuals in socially living animals select for the evolution of signals that convey information identifying individuals or categories of individuals, which may enable the discrimination of familiar versus unfamiliar individuals. Such information may help animals maximize their inclusive fitness by adjusting their own behaviour, allowing them to avoid conflict, preferentially direct help and/or ignore unreliable individuals. Acoustic signals in birds provide the potential to encode individual-specific information. We examined the degree to which individual identity, sex, breeding status, group membership and genetic relatedness were related to variability in six different call types, which occurred across a variety of different behavioural contexts in the apostlebird, Struthidea cinerea, a socially living and cooperatively breeding Australian passerine. We demonstrated that not all calls reflected the same extent of information. Of the six call types, call variation was related to individual identity in three call types, breeding status in two call types and sex and group relatedness in one call type. Finally, variation in two call types was not related to any of the measured variables. Our results suggest that some, but not all, acoustic signals in apostlebirds may be selected for individual distinctiveness between individuals and categories of individuals (male versus female, breeder versus nonbreeder), and these signals may be important in determining levels of cooperation and interaction between individuals in this cooperatively breeding society. © 2014 The Association for the Study of Animal Behaviour.

Observable essential fatty acid deficiency markers and autism spectrum disorder

Autism Spectrum Disorder (ASD) has been associated with essential fatty acid (EFA) deficiencies, with some researchers theorising that dysregulation of phospholipid metabolism may form part of the biological basis for ASD. This pilot study compared observable signs of fatty acid status of 19 children with an ASD diagnosis to 23 of their typically developing siblings. A pregnancy, birth and breastfeeding history was also obtained from their parents, which included a measure of infant intake of fatty acid rich colostrum immediately post-partum. When considered within their family group, those infants not breastfed (with colostrum) within the first hour of life and who had a history of fatty acid deficiency symptoms were more likely to have an ASD diagnosis. Other variables such as formula use, duration of breastfeeding, gestational age and Apgar scores were not associated with group membership. The results of this study are consistent with previous research showing a relationship between fatty acid metabolism, breastfeeding and ASD such that early infant feeding practices and the influence this has on the fatty acid metabolism of the child may be a risk factor for ASD.

The show must go on’ : older entertainers making music in the community in Melbourne, Australia

Globally countries are faced with an aging population and Australia is no different. This creates challenges for the maintenance of well-being which can be enhanced by active engagement in society. There is extensive research that confirms that engagement in music by older people is positively related to individual and community wellbeing. Music engagement encompasses a range of social participation and has the potential to recognise the contribution of older people to their local communities. Music participation can contribute to a better quality of life, particularly in relation to health and happiness. There are many possible forms of music engagement. This study is part of an on-going Deakin University and Monash University research project, Well-being and ageing: community, diversity and the arts in Victoria. This article focuses on three members of a mixed voluntary singing group formed by older residents of an outer suburban community in Melbourne, Australia. This group, The Skylarkers, were established in 1999 as a four-part choir. Over the years the nature of the choir has changed under subsequent music directors. Since 2009 the group has focused on music theatre repertoire and performance style. Membership of the group is fluid reflecting changing life circumstances of the members but the ensemble is resilient. This small amateur music theatre group is based in suburban Melbourne, rehearses weekly and performs regularly at retirement villages, nursing homes and facilities for senior citizens. This article presents a phenomenological qualitative single case study of members of the Skylarkers. In this study, interview data were gathered in 2011-2012 and analysed using interpretative phenomenological analysis. Two significant themes emerged that concern musical self-identity and gaining a sense of purpose and fulfilment. The Skylarkers are more than a choir; they are an amateur entertainment troupe that engages with each other and the wider community. This resilient group holds true to the motto ‘the show must go on’.

Iran and the Shanghai cooperation organization : ideology and realpolitik in Iranian foreign policy

The Islamic Republic of Iran has pursued full membership in the Shanghai Cooperation Organisation (SCO). In doing so, Iran has appeared to be unfazed by the prospect of allying with Russia and China, two countries which have systematically suppressed their Muslim minorities for decades. Similarly, the SCO's Central Asian member states are led by individual leaders who are generally believed to rule in spite of their populations. As a result, Iran's eagerness to join the SCO may appear to contradict its self-promoted image as the champion of Muslim interests, but in reality it sits nicely within its overarching enmity for the USA. Indeed, the SCO is seen as a geopolitical counterweight to the USA. For Iran, this geopolitical opportunity overrides ideological imperatives, with the gap between ideology and geopolitics most evident under the presidency of Mahmoud Ahmadinejad.

An effective program design to support older workers with intellectual disability to participate individually in community groups

The foreshadowed increase of older people with intellectual disability has become a reality in many developed countries. As these adults age, improved quality of life can be achieved through applications of conjoint policy aims of inclusion and participation. A transition-to-retirement (TTR) program developed for employees of a large multisite disability employment service in Sydney, Australia, used these aims to effect successful partial retirement. The authors describe the program logic of the TTR, detailing its conceptual components as the first step to enabling it to be tested and replicated in other settings. The TTR program has three components: promoting the concept of retirement, laying the groundwork for inclusion of would-be retirees with intellectual disability in the community, and constructing the reality. The third component comprised five stages: planning, locating a group, mapping new routine, recruiting and training mentors, and monitoring and ongoing support. The project's participants were 24 older employees, who replaced 1 day a week of work with membership of a community group and were supported by mentors who facilitated involvement of the participants in their group. Data collected provided information on the implementation of the program, the time and costs expended, and challenges encountered. Key to the model was a coordinator, skilled in generic case management and specific disability interventions (such as active support), who collaborated with others to manage the program. The authors note that by detailing the program logic underpinning the TTR program, they have exposed the hidden work of supporting meaningful inclusion of people with intellectual disability in community groups and added to the limited stock of evidence-informed programs in this area. © 2014 International Association for the Scientific Study of Intellectual and Developmental Disabilities and Wiley Periodicals, Inc.

Re-thinking continuing professional development through changing metaphors and location in professional practices

Many professions have requirements for professional development activities to ensure continuing registration or membership. These commonly focus on participation in a limited range of activities. This paper questions the assumptions behind such approaches and what alternatives might be considered. It explores the suitability of metaphors used for continuing professional education and suggests that continuing professional development might be better conceptualised within practice theory. It identifies what a practice theory view of continuing professional development might involve and discusses the implications, particularly the notion of locating development within the practices of work.

Facilitated communication and authorship: a systematic review

Facilitated Communication (FC) is a technique whereby individuals with disabilities and communication impairments allegedly select letters by typing on a keyboard while receiving physical support, emotional encouragement, and other communication supports from facilitators. The validity of FC stands or falls on the question of who is authoring the typed messages--the individual with a disability or the facilitator. The International Society for Augmentative and Alternative Communication (ISAAC) formed an Ad Hoc Committee on FC and charged this committee to synthesize the evidence base related to this question in order to develop a position statement. The purpose of this paper is to report this synthesis of the extant peer-reviewed literature on the question of authorship in FC. A multi-faceted search was conducted including electronic database searches, ancestry searches, and contacting selected authors. The authors considered synopses of systematic reviews, and systematic reviews, which were supplemented with individual studies not included in any prior reviews. Additionally, documents submitted by the membership were screened for inclusion. The evidence was classified into articles that provided (a) quantitative experimental data related to the authorship of messages, (b) quantitative descriptive data on the output generated through FC without testing of authorship, (c) qualitative descriptive data on the output generated via FC without testing of authorship, and (d) anecdotal reports in which writers shared their perspectives on FC. Only documents with quantitative experimental data were analyzed for authorship. Results indicated unequivocal evidence for facilitator control: messages generated through FC are authored by the facilitators rather than the individuals with disabilities. Hence, FC is a technique that has no validity.

A noisy-smoothing relevance feedback method for content-based medical image retrieval

In this paper, we address a new problem of noisy images which present in the procedure of relevance feedback for medical image retrieval. We concentrate on the noisy images, caused by the users mislabeling some irrelevant images as relevant ones, and a noisy-smoothing relevance feedback (NS-RF) method is proposed. In NS-RF, a two-step strategy is proposed to handle the noisy images. In step 1, a noisy elimination algorithm is adopted to identify and eliminate the noisy images. In step 2, to further alleviate the influence of noisy images, a fuzzy membership function is employed to estimate the relevance probabilities of retained relevant images. After noisy handling, the fuzzy support vector machine, which can take into account different relevant images with different relevance probabilities, is adopted to re-rank the images. The experimental results on the IRMA medical image collection demonstrate that the proposed method can deal with the noisy images effectively.

Reflections on being a first generation self-advocate: belonging, social connections, and doing things that matter

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.

Clustering of diet, physical activity and sedentary behaviour among Australian children: cross-sectional and longitudinal associations with overweight and obesity

BACKGROUND/OBJECTIVES: Evidence suggests diet, physical activity (PA) and sedentary behaviour cluster together in children, but research supporting an association with overweight/obesity is equivocal. Furthermore, the stability of clusters over time is unknown. The aim of this study was to examine the clustering of diet, PA and sedentary behaviour in Australian children and cross-sectional and longitudinal associations with overweight/obesity. Stability of obesity-related clusters over 3-years was also examined. SUBJECTS/METHODS: Data were drawn from the baseline (T1: 2002/03) and follow-up waves (T2: 2005/06) of the Health Eating and Play Study. Parents of Australian children aged 5-6 (n=87) and 10-12 years (n=123) completed questionnaires. Children wore accelerometers and height and weight were measured. Obesity-related clusters were determined using K-medians cluster analysis. Multivariate regression models assessed cross-sectional and longitudinal associations between cluster membership, and BMI z-score and weight status. Kappa statistics assessed cluster stability over time. RESULTS: Three clusters, labelled 'most Healthy', 'Energy-dense (ED) consumers who watch TV' and 'high sedentary behaviour/low moderate-to-vigorous physical activity' were identified at baseline and at follow-up. No cross-sectional associations were found between cluster membership, and BMI z-score or weight status at baseline. Longitudinally, children in the 'ED consumers who watch TV' cluster had a higher odds of being overweight/obese at follow-up (OR=2.8; 95% CI: 1.1, 6.9; P<0.05). Tracking of cluster membership was fair to moderate in younger (K=0.24; P=0.0001) and older children (K=0.46; P<0.0001). CONCLUSIONS: This study identified an unhealthy cluster of TV viewing with ED food/drink consumption which predicted overweight/obesity in a small longitudinal sample of Australian children. Cluster stability was fair to moderate over three years and is a novel finding. Prospective research in larger samples is needed to examine how obesity-related clusters track over time and influence the development of overweight and obesity.International Journal of Obesity accepted article preview online, 24 April 2015. doi:10.1038/ijo.2015.66.

FEACS: a flexible and efficient access control scheme for cloud computing

In the past few years, cloud computing has emerged as one of the most influential paradigms in the IT industry. As promising as it is, this paradigm brings forth many new challenges for data security because users have to outsource sensitive data on untrusted cloud servers for sharing. In this paper, to guarantee the confidentiality and security of data sharing in cloud environment, we propose a Flexible and Efficient Access Control Scheme (FEACS) based on Attribute-Based Encryption, which is suitable for fine-grained access control. Compared with existing state-of-the-art schemes, FEACS is more practical by following functions. First of all, considering the factor that the user membership may change frequently in cloud environment, FEACS has the capability of coping with dynamic membership efficiently. Secondly, full logic expression is supported to make the access policy described accurately and efficiently. Besides, we prove in the standard model that FEACS is secure based on the Decisional Bilinear Diffie-Hellman assumption. To evaluate the practicality of FEACS, we provide a detailed theoretical performance analysis and a simulation comparison with existing schemes. Both the theoretical analysis and the experimental results prove that our scheme is efficient and effective for cloud environment.

Typology of alcohol mixed with energy drink consumers: motivations for use

Background: Previous research on alcohol mixed with energy drinks (AmED) has shown that use is typically driven by hedonistic, social, functional, and intoxication-related motives, with differential associations with alcohol-related harm across these constructs. There has been no research looking at whether there are subgroups of consumers based on patterns of motivations. Consequently, the aims were to determine the typology of motivations for AmED use among a community sample and to identify correlates of subgroup membership. In addition, we aimed to determine whether this structure of motivations applied to a university student sample. Methods: Data were used from an Australian community sample (n = 731) and an Australian university student sample (n = 594) who were identified as AmED consumers when completing an online survey about their alcohol and ED use. Participants reported their level of agreement with 14 motivations for AmED use; latent classes of AmED consumers were identified based on patterns of motivation endorsement using latent class analysis. Results: A 4-class model was selected using data from the community sample: (i) taste consumers (31%): endorsed pleasurable taste; (ii) energy-seeking consumers (24%): endorsed functional and taste motives; (iii) hedonistic consumers (33%): endorse pleasure and sensation-seeking motives, as well as functional and taste motives; and (iv) intoxication-related consumers (12%): endorsed motives related to feeling in control of intoxication, as well as hedonistic, functional, and taste motives. The consumer subgroups typically did not differ on demographics, other drug use, alcohol and ED use, and AmED risk taking. The patterns of motivations for the 4-class model were similar for the university student sample. Conclusions: This study indicated the existence of 4 subgroups of AmED consumers based on their patterns of motivations for AmED use consistently structured across the community and university student sample. These findings lend support to the growing conceptualization of AmED consumers as a heterogeneous group in regard to motivations for use, with a hierarchical and cumulative class order in regard to the number of types of motivation for AmED use. Prospective research may endeavor to link session-specific motives and outcomes, as it is apparent that primary consumption motives may be fluid between sessions.

Neighbourhood environment, sitting time and motorised transport in older adults: a cross-sectional study in Hong Kong

OBJECTIVES: Sitting time is a public health concern. This study examined associations of objectively measured neighbourhood environmental attributes with non-transport sitting time and motorised transport in 484 Hong Kong older adults. Neighbourhood attributes encouraging walking may help older adults replace some sitting time at home and on motorised transport with light-to-moderate-intensity activities such as strolling around the neighbourhood or walking to/from neighbourhood destinations. Thus, we hypothesised environmental attributes found to be related to walking would show associations with non-transport sitting time and motorised transport opposite to those seen for walking. DESIGN: Cross-sectional. SETTING: Hong Kong, an ultradense urban environment. PARTICIPANTS: 484 ethnic Chinese Hong Kong residents aged 65+ recruited from membership lists of four Hong Kong Elderly Health Centres representing catchment areas of low and high transport-related walkability stratified by socioeconomic status (response rate: 78%). PRIMARY AND SECONDARY OUTCOME MEASURES: Attributes of participants' neighbourhood environments were assessed by environmental audits, while non-transport sitting time and motorised transport were ascertained using the International Physical Activity Questionnaire-Long Form (Chinese version). RESULTS: Daily non-transport sitting minutes were 283 (SD=128) and motorised transport 23 (SD=28). Prevalence of signs of crime/disorder, streetlights, public facilities (toilets and benches) and pedestrian safety were independently negatively related, and sloping streets positively related, to sitting outcomes. Places of worship in the neighbourhood were predictive of more, and prevalence of public transit points of less, non-transport sitting. Associations of either or both sitting outcomes with prevalence of food/grocery stores and presence of parks were moderated by path obstructions and signs of crime/disorder. CONCLUSIONS: The findings suggest that access to specific destinations and relatively low-cost, minimal impact modifications to the urban form, such as street lighting, public toilets, benches and public transit points, could potentially reduce sitting time and associated negative health outcomes in Hong Kong older adults.