990 resultados para relaxation times


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“… university libraries, while differing in the specifics of their goals, generally embrace the obligation to collect, preserve, and make available primary source materials for both current scholarship and future research” (Hewitt 1998).

This paper explores some of the challenges faced by the Fryer Library, the special collections branch of the University of Queensland Library responsible for manuscripts and pictorial materials, as well as theses and rare books. The challenges are not dissimilar to those being met by other cultural agencies or institutions as well as other academic libraries. The challenges covered include collection development, access and preservation, making appropriate responses to the research imperative, as well as promotion of services and collections, and servicing the community at large. The paper outlines the research library context and concludes with experiences of cross-sectoral collaborations and future opportunities.

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This paper discusses policy and practice relevant to teacher education and professional experience programs in Australia, aiming to assist not only reading our past and present, but also offering strategic direction with respect to the challenges and opportunities that are emerging within the Australian context. A meta-analysis of current major trends in Australian educational reform and the implications of an 'education revolution' for professional experience are discussed. The paper maps and examines broadly key education agendas of 'productivity, participation and quality'. In relation to these agendas, significant policy trends are identified under the headings of partnerships, preparation and professional learning, and the implications of each for the field of teacher education and professional experience are explored. Some comparisons with similar reforms that have occurred in Scotland and England are offered to provide insights and alternative directions for those working in the field. Finally, a range of possibilities and suggestions, along with cautionary tales of locally based professional experience practices, are provided.

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7Li and 19F NMR relaxation time (T1, T2, T) measurements have been used to probe the dynamics of LiCF3SO3 dissolved in an amorphous co-polymer poly(ethylene oxide-co-propylene oxide), and in particular the influence of the plasticising agents propylene carbonate and dimethyl formamide. The changes in relaxation behaviour of 19F and 7Li with increasing plasticiser concentration are very different, as is the effect of each plasticiser. These differences can be explained qualitatively in terms of the interaction between the plasticiser and the ions. Preliminary 7Li T1ρ measurements reveal two components at low temperatures.

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The effects of solvent uptake on the relaxation behaviour, morphology and mechanical properties of poly(ether ether ketone) (PEEK), poly(etherimide) (PEI) and a 50/50 PEEK/PEI blend have been investigated. Amorphous films were immersed in acetone at 25°C, 35°C and 45°C until equilibrium uptake was achieved. The films were then examined by wide angle X-ray scattering (WAXS), differential scanning calorimetry (d.s.c.), dynamic mechanical relaxation spectroscopy and mechanical testing. WAXS and d.s.c. revealed that the degree of solvent induced crystallinity in PEEK is constant with immersion temperature, whereas the degree of induced crystallinity in the 50/50 blend is strongly temperature dependent. The dynamic mechanical studies confirmed that a significant decrease in glass transition temperature results from the plasticizing effect of the solvent and that solvent and thermally crystallized samples have different relaxation characteristics. Mechanical property tests showed that the yield stress and tensile strength of the blend are dominated by PEEK and the degree of crystallinity, while the modulus is more sensitive to the extent of plasticization.

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Research leadership in Australian universities takes place against a backdrop of policy reforms concerned with measurement and comparison of institutional research performance. In particular, the Excellence in Research in Australian initiative undertaken by the Australian Research Council sets out to evaluate research quality in Australian universities, using a combination of expert review process, and assessment of performance against ‘quality indicators’. Benchmarking exercises of this sort continue to shape institutional policy and practice, with inevitable effects on the ways in which research leadership, mentoring and practice are played out within university faculties and departments. In an exploratory study that interviewed 32 Australian academics in universities in four Australian states, we asked participants, occupying formal or informal research leadership roles, to comment on their perceptions of research leadership as envisioned and enacted in their particular workplaces. We found a pervasive concern amongst participants that coalesced around binaries characterized in metaphoric terms of ‘carrots and whips’. Research leadership was seen by many as managerial in nature, and as such, largely tethered to instrumentalist notions of productivity and performativity, while research cultures were seen as languishing under the demoralizing weight of reward and punishment systems. Here, we consider what is at stake for the future of the academic workforce under such conditions, arguing that new models of visionary research leadership are urgently needed in the ‘troubled times’ of techno-bureaucratic university reforms.

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Confucianism served the dynastic rulers of China well in their control of the education system as part of maintaining their reign for over 2,000 years, yet very little academic literature exists in the West on this important topic. This book examines the key ideological concepts of the canonized Confucian texts, accumulated from the 4th century BC onward, in the search of understanding the traditions of Chinese society, which appear to have always emphasized hierarchical relationships, harmony and stability rather than individualism, innovation, equity and fairness. By analyzing the ethical contents in Confucian primers produced in dynastic China, this study should help shed some light on how generations of Chinese children were cultivated to value passivity, submissiveness, acceptance of fate and maintenance of the status quo. This book provides a comprehensive resource for both undergraduates and specialists of comparative education. It will also be useful to China scholars or anyone else who shares an interest in Chinese history and philosophy.

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In historical sketches of India-Australia or Australia-India relations, the important dimensions of the cultural and religious connections from the shared colonial period and Gandhi's nationalist voice echoing in all corners of the Empire, through to the diasporic migration, settlement and temple culture, is largely overlooked. This essay intends the redress that absence in current research and contribute toward a critical appraisal of that rather 'esoteric' part of history, arguably still in its infancy. The story begins close to the early white settlement period to the aftermath of the events of 9/11 (2001 in New York) and Bali (2002). The focus will be on Hindus with some reference to Sikhs, Muslims, Sri Lankan Tamils, and migrants from the subcontinent, as the conduits for the particular Indian-Australian diasporic connection and 'spiritual diplomacy' being explored.

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Peter Snodgrass, an early pioneer and squatter in the Port Phillip District, died on 27 November 1867. A member of a gentrified military family, he reconstructed his life by overlanding from New south Wales to the Goulburn River District where he established a pastoral holding. Despite his early reputation as 'a wild young man' he became a member of Port Phillip District's first Legeslative Council, first Legislative Assembly and first Prahran Council, and was also a foundation member of a number of professional and sporting clubs in Melbourne. A somewhat enigmatic figure in his lifetime, Snodgrass is yet worthy of study for legacies that became an integral part of our cultural heritage.

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Childhood obesity is a highly complex issue with serious health and environmental implications. It has been postulated that young children (preschool-aged in particular) are able to internalise positive environmental beliefs. Applying a socioecological theoretical perspective, in this discussion paper we argue that although children may internalise such beliefs, they commonly behave in ways that contradict these beliefs as demonstrated by their consumer choices. The media directly influences these consumer choices and growing evidence suggests that media exposure (particularly commercial television viewing) may be a significant “player” in the prediction of childhood obesity. However, there is still debate as to whether childhood obesity is caused by digital media use per se or whether other factors mediate this relationship. Growing evidence suggests that researchers should examine whether different types of content have conflicting influences on a child’s consumer choices and, by extension, obesity. The extent to which young children connect their consumer choices and the sustainability of the product/s they consume with their overall health and wellbeing has not previously been researched. To these ends, we call for further research on this socioecological phenomenon among young children, particularly with respect to the influence of digital media use on a child’s consumer behaviours.

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Issues such as anxiety, alienation, crises and concerns over self-identity typify this era of uncertainty. These are also recognised themes of Existentialism and have implications for educational practice and research. The purpose of this paper is threefold. Firstly, it aims to clarify Existentialism, as too often it is mistakenly assumed to refer to an atomistic view of the individual, who is able to exercise absolute freedom. This clarification refers primarily to the works of Kierkegaard, Nietzsche and Heidegger.

The second purpose is to present an outline of a particular existential framework. This is mainly structured around the notion of the learner, who is characterised as being in relation, culturally embedded, alienated and a meaning-maker. These attributes have direct implications for the ideal of 'the educated person' - an often-articulated 'aim' of education programmes. Becoming educated, according to this framework, means becoming authentic, spiritual, critical, empathetic, and having personal identity.

A third purpose is to argue how educators may usefully employ such a framework. By engaging with it, educators are able to examine effective pedagogical approaches using notions of 'the existential crisis' and anxiety. In this way, educational curriculums, programmes and policies can also be critiqued using this framework.

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Farmers and fishers have always been exposed to the vagaries of climate and global economic forces. However, in recent years there has been an accumulation of factors which are having a particularly severe impact upon rural Australia. The global financial crisis has negatively affected commodity prices and the viability of some rural communities is under threat. There is evidence to suggest that climate change is already impacting adversely on many primary producers and their ability to farm using traditional methods. Furthermore, many parts of rural Australia are still experiencing the effects of long-term drought and associated problems. Together, these circumstances can rightly be conceived of as 'difficult times'. Key areas recently identified in a decline in mental health among farmers include: increasing isolation, ongoing drought, increased government regulations, and a widening of the schism between urban and rural Australians. While there is a body of literature on behaviour around illness in the context of the stress of ' difficult times', there is little on preventative behaviours in these circumstances. This chapter reports preliminary findings from an exploratory research projects that investigates the process by which farmers and fishers achieve and maintain good physical and mental health in the context of 'difficult times'. The research takes a multiple case study approach, with five Australian sites, each with a different industry base, representing communities undergoing 'difficult times'. This chapter focuses on two of the sites and data obtained from interviews with farmers in the cotton and sugar industries. It discusses the behavioural choices that they make to maintain good physical health and mental wellbeing. These include choices about nutrition, physical activity, social connections such as participation in community, social or farm-related groups, opportunities for relaxation and regular medical check-ups.