992 resultados para National Film and Sound Archive of Australia


Relevância:

100.00% 100.00%

Publicador:

Resumo:

This practice-led research looks at the ways in which the colonial archive, and the colonial photographic archive in particular, can be reconstructed to produce new critical histories. The research argues for the potential of the moving image as a tool for re-staging colonial archives, as a means of generating responsible ways of looking at, and of engaging with our troubled collective pasts. In my practice I mix the photographic archive of the Anglo-Iranian Oil Company(which became BP) with my family’s photographs from Iran, and with the documentation and narrativization of my encounter with both of these sets of materials, within the moving image. Through this process I address questions about the nature of the photographic archive and the search for historical meaning within it; the question of the researcher’s position within the archive and within the history she produces; and I investigate the affective power of colonial photographs within film and the experience of untimeliness which they produce. While addressing problems associated with the failure of photographic archives to offer access to any stable, transparent meaning, I show how engaging with slippages of meaning can produce other kinds of historical knowledge. But I also argue that attending to the impression of the ‘real’ produced by the colonial photograph as it appears within film, makes the past felt in the present tense, in ways that draw attention to the responsibility of being an onlooker in a situation of injustice. In addition I show how registering the place and time of the researcher within the new filmic archive in motion produces an effective means of imaginative time travel and a lively experience of history.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Substantial structural reform has occurred in the water and wastewater sectors of Australia's major urban centers over the past two decades. This reform has involved the corporatization of government assets and some vertical and horizontal separation. This paper analyses the performance of these sectors since the mid 1990s. In particular, it uses Malmquist Data Envelopment Analysis (DEA) to determine the different levels of productivity and efficiency improvement over this period. The results point to modest, but positive productivity gains in the larger urban centers, independent of industry structure. Further, it highlights the need to consider exogenous factors that can influence productivity outcomes in an industry generally associated with monopoly characteristics and dependent on water sources that are, to varying extents, unpredictable and uncontrollable.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Anecdotal evidence highlights issues of alcohol and other drugs (AODs) and its association with safety risk on construction sites. Information is limited however regarding the prevalence of AODs in the workplace and there is limited evidential guidance regarding how to effectively address it. This research aimed to scientifically evaluate the use of AODs within the Australian construction industry in order to reduce the potential resulting safety and performance impacts and engender a cultural change in the workforce. A national qualitative and quantitative evaluation of the use of AODs was conducted with approximately 500 employees. Results indicate that as in the general population, a proportion of those sampled in the construction sector may be at risk of hazardous alcohol consumption and support the need for evidence-based, tailored responses. This is the first known study to scientifically evaluate the use of AODs and potential workplace safety impacts in the construction sector.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Over the last few years the Safety Institute of Australia (SIA) has developed and implemented a number of strategies to gain professional status for the ‘generalist occupational health and safety professional’. Two of the most significant developments have been the publication of the ‘Core Body of Knowledge for the Generalist OHS Professional.’ and the accreditation of university OHS courses. Despite a considerable amount of work aimed at gaining professional status there has not been any public debate or reflection about how the professionalisation project may impact on OHS and how the project is being conducted. Professionalisation has been vigorously promoted as a sign of maturity for the SIA and which will provide unmitigated benefits for workplace health and safety. The aim of this paper is to critically reflect on the processes of professionalisation (the professional project) and discuss some of the ways in which this project may shape the field of occupational health and safety. The implications for the role of universities will also be discussed.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The main factors affecting solid-phase Si-metal interactions are reported in this work. The influence of the orientation of the Si substrates and the presence of impurities in metal films and at the Si-metal interface on the formation of nickel and chromium silicides have been demonstrated. We have observed that the formation and kinetic rate of growth of nickel silicides is strongly dependent on the orientation and crystallinity of the Si substrates; a fact which, up to date, has never been seriously investigated in silicide formation. Impurity contaminations in the Cr film and at the Si-Cr interface are the most dominant influencing factors in the formation and kinetic rate of growth of CrSi2. The potentiality and use of silicides as a diffusion barrier in metallization on silicon devices were also investigated.

Two phases, Ni2Si and NiSi, form simultaneously in two distinct sublayers in the reaction of Ni with amorphous Si, while only the former phase was observed on other substrates. On (111) oriented Si substrates the growth rate is about 2 to 3 times less than that on <100> or polycrystalline Si. Transmission electron micrographs establish-·that silicide layers grown on different substrates have different microcrystalline structures. The concept of grain-boundary diffusion is speculated to be an important factor in silicide formation.

The composition and kinetic rate of CrSi2 formation are not influenced by the underlying Si substrate. While the orientation of the Si substrate does not affect the formation of CrSi2 , the purity of the Cr film and the state of Si-Cr interface become the predominant factors in the reaction process. With an interposed layer of Pd2Si between the Cr film and the Si substrate, CrSi2 starts to form at a much lower temperature (400°C) relative to the Si-Cr system. However, the growth rate of CrSi2 is observed to be independent of the thickness of the Pd2Si layer. For both Si-Cr and Si-Pd2Si-Cr samples, the growth rate is linear with time with an activation energy of 1.7 ± 0.1 ev.

A tracer technique using radioactive 31Si (T1/2 = 2.26 h) was used to study the formation of CrSi2 on Pd2Si. It is established from this experiment that the growth of CrSi2 takes place partly by transport of Si directly from the Si substrate and partly by breaking Pd2Si bonds, making free Si atoms available for the growth process.

The role of CrSi2 in Pd-Al metallization on Si was studied. It is established that a thin CrSi2 layer can be used as a diffusion barrier to prevent Al from interacting with Pd2Si in the Pd-Al metallization on Si.

As a generalization of what has been observed for polycrystalline-Si-Al interaction, the reactions between polycrystalline Si (poly Si) and other metals were studied. The metals investigated include Ni, Cr, Pd, Ag and Au. For Ni, Cr and Pd, annealing results in silicide formation, at temperatures similar to those observed on single crystal Si substrates. For Al, Ag and Au, which form simple eutectics with Si annealing results in erosion of the poly Si layer and growth of Si crystallites in the metal films.

Backscattering spectrometry with 2.0 and 2.3 MeV 4He ions was the main analytical tool used in all our investigations. Other experimental techniques include the Read camera glancing angle x-ray diffraction, scanning electron, optical and transmission electron microscopy. Details of these analytical techniques are given in Chapter II.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Two kinds of nickel(II) and copper(II) P-diketone complexes derived from thenoyltrifluoroacetone ligand with blue-violet light absorption were synthesized by reacting free ligand and different metal(II) ions in sodium methoxide solution. Their structures were postulated based on elemental analysis, ESI-MS, FT-IR spectra and UV-vis electronic absorption spectra. Smooth films on K9 glass substrates were prepared using the spin-coating method. Their solubility in organic solvents, absorption properties of thin film and thermal stability of these complexes were evaluated. (c) 2006 Elsevier B.V. All rights reserved.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The structural properties and the room temperature luminescence of Er 2O3 thin films deposited by magnetron sputtering have been studied. In spite of the well-known high reactivity of rare earth oxides towards silicon, films characterized by good morphological properties have been obtained by using a SiO2 interlayer between the film and the silicon substrate. The evolution of the properties of the Er2O3 films due to thermal annealing processes in oxygen ambient performed at temperatures in the range of 800-1200°C has been investigated in detail. The existence of well defined annealing conditions (rapid treatments at a temperature of 1100°C or higher) allowing to avoid the occurrence of extensive chemical reactions with the oxidized substrate has been demonstrated; under these conditions, the thermal process has a beneficial effect on both structural and optical properties of the film, and an increase of the photoluminescence (PL) intensity by about a factor of 40 with respect to the as-deposited material has been observed. The enhanced efficiency of the photon emission process has been correlated with the longer lifetime of the PL signal. Finally, the conditions leading to a reaction of Er2O3 with the substrate have been also identified, and evidences about the formation of silicate-like phases have been collected. © 2006 American Institute of Physics.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

«Building Blocks: Children’s Literature and the Formation of a Nation, 1750-1825» examine la façon dont la littérature pour enfants imprègne les jeunes lecteurs avec un sens de nationalisme et d'identité nationale à travers la compréhension des espaces et des relations spatiales. La thèse étudie les œuvres d’enfants par Thomas Day, Sarah Fielding, Mary Wollstonecraft, Richard Lovell et Maria Edgeworth, Charles et Mary Lamb, Sarah Trimmer, Lucy Peacock, Priscilla Wakefield, John Aikin, et Anna Laetitia Barbauld. Les différents sujets thématiques reflètent la façon dont les frontières entre les dimensions extérieures et intérieures, entre le monde physique et le domaine psychologique, sont floues. En s'appuyant sur les travaux de penseurs éducatifs, John Locke et Jean-Jacques Rousseau, les écritures pour les enfants soulignent l'importance des expériences sensorielles qui informent l’évolution interne des individus. En retour, la projection de l'imagination et l'investissement des sentiments aident à former la manière dont les gens interagissent avec le monde matériel et les uns envers les autres afin de former une nation. En utilisant une approche Foucaldienne, cette thèse montre comment la discipline est inculquée chez les enfants et les transforme en sujets réglementés. Grâce à des confessions et des discours, les enfants souscrivent à la notion de surveillance et de transparence tandis que l'appréciation de l'opinion publique encourage la pratique de la maîtrise de soi. Les enfants deviennent non seulement des ébauches, sensibles à des impressions, mais des corps d'écriture lisibles. Les valeurs et les normes de la société sont internalisées pendant que les enfants deviennent une partie intégrale du système qu'ils adoptent. L'importance de la visibilité est également soulignée dans la popularité du système de Linné qui met l'accent sur l'observation et la catégorisation. L'histoire naturelle dans la littérature enfantine renforce la structure hiérarchique de la société, ce qui souligne la nécessité de respecter les limites de classes et de jouer des rôles individuels pour le bien-être de la collectivité. Les connotations religieuses dans l'histoire naturelle peuvent sembler justifier l'inégalité des classes, mais elles diffusent aussi des messages de charité, de bienveillance et d'empathie, offrant une alternative ou une forme d’identité nationale «féminine» qui est en contraste avec le militarisme et le nationalisme patricien. La seconde moitié de la thèse examine comment la théorie des « communautés imaginées » de Benedict Anderson devient une possibilité à travers le développement du goût national et une compréhension de l'interconnexion entre les individus. Le personnage du barde pointe à la centralité de l'esprit communautaire dans l'identité nationale. Parallèlement à la commercialisation croissante de produits culturels et nationaux durant cette période, on retrouve l’augmentation de l’attachement affectif envers les objets et la nécessité de découvrir l'authentique dans la pratique de la réflexion critique. La propriété est redéfinie à travers la question des «vrais» droits de propriété et devient partagée dans l'imaginaire commun. Des cartes disséquées enseignent aux enfants comment visualiser des espaces et des frontières et conceptualisent la place de l’individu dans la société. Les enfants apprennent que des actions disparates effectuées dans la sphère domestique ont des répercussions plus importantes dans le domaine public de la nation.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The definition of the nerve cell types of the myenteric plexus of the mouse small intestine has become important, as more researchers turn to the use of mice with genetic mutations to analyze roles of specific genes and their products in enteric nervous system function and to investigate animal models of disease. We have used a suite of antibodies to define neurons by their shapes, sizes, and neurochemistry in the myenteric plexus. Anti-Hu antibodies were used to reveal all nerve cells, and the major subpopulations were defined in relation to the Hu-positive neurons. Morphological Type II neurons, revealed by anti-neurofilament and anti-calcitonin gene-related peptide antibodies, represented 26% of neurons. The axons of the Type II neurons projected through the circular muscle and submucosa to the mucosa. The cell bodies were immunoreactive for choline acetyltransferase (ChAT), and their terminals were immunoreactive for vesicular acetylcholine transporter (VAChT). Nitric oxide synthase (NOS) occurred in 29% of nerve cells. Most were also immunoreactive for vasoactive intestinal peptide, but they were not tachykinin (TK)-immunoreactive, and only 10% were ChAT-immunoreactive. Numerous NOS terminals occurred in the circular muscle. We deduced that 90% of NOS neurons were inhibitory motor neurons to the muscle (26% of all neurons) and 10% (3% of all neurons) were interneurons. Calretinin immunoreactivity was found in a high proportion of neurons (52%). Many of these had TK immunoreactivity. Small calretinin neurons were identified as excitatory neurons to the longitudinal muscle (about 20% of neurons, with ChAT/calretinin/+/- TK chemical coding). Excitatory neurons to the circular muscle (about 10% of neurons) had the same coding. Calretinin immunoreactivity also occurred in a proportion of Type II neurons. Thus, over 90% of neurons in the myenteric plexus of the mouse small intestine can be currently identified by their neurochemistry and shape.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

The Defining Issues Test (DIT), developed by Rest (1986), measures a person's level of moral development using hypothetical social dilemmas. Although the DIT is useful for measuring moral development in social settings, it might not adequately capture an individual's moral judgement abilities in solving work-related problems (Weber, 1990; Trevino, 1992; Welton et al., 1994). In the present study, the moral judgement levels of 97 accounting students were measured over a 1 year period using two separate test instruments, the DIT and a context-specific instrument developed by Welton et al. (1994). The test scores are significantly higher on the DIT than the Welton instrument (between the instruments and over time), suggesting that accounting students use higher levels of moral reasoning in resolving hypothetical social dilemmas and lower levels of moral reasoning in resolving context-specific dilemmas. The difference in test scores was highest during cooperative education (work placement programme), implying that the environment is a significant determinant on students' test scores.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

This study examined how mentoring support, peer influence and individual attributes of early career accountants (ECA) influence their ethical evaluations and behavioural intentions. Respondents indicate that their evaluation of the seriousness of the ethical conflict is affected by the perceived standard of ethical conduct of their peers, their personal ethical orientation, the extent of ethics education at university, and gender. ECAs' evaluation of a senior colleague's unethical behaviour is affected by mentoring support and the perceived standard of ethical conduct of peers. In terms of ECAs' willingness to contact accounting professional bodies for ethical advice, the size of the accounting firm and the extent of their ethics education at university are significant factors. Furthermore, the likelihood of respondents choosing a more ethical decision is correlated with his or her individual ethical orientation and the extent of ethics education at university.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Objectives
This article provides a brief examination of the prejudices and politics framing current public debate on population ageing in Australia and the possible implications of this for the allocation of required health and social sector resources. The role and responsibility of nurses and professional nursing organisations to engage in and influence public policy debate concerning the health and social care of older people is highlighted.

Setting
Australia

Subjects
Australia's ageing population and succeeding generations over the next 40 years

Primary argument
According to the Australian government, population ageing in Australia is poised to cause unmanageable chaos for the nation's public services. The cost of meeting the future health and social care needs of older Australians is predicted to be unsustainable. Officials argue that government has a stringent responsibility to ration current and future resources in the health and social care sector, cautioning that if this is not done, the nation's public services will ultimately collapse under the strain of the ever increasing demands placed on these services by older people. This characterisation of population ageing and its consequences to the nation's social wellbeing may however be false and misleading and needs to be questioned.

Conclusion
The nursing profession has a fundamental role to play in ensuring responsible debate about population ageing and contributing to public policy agenda setting for the effective health and social care of Australia's ageing population.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Table of Contents : Preface Introduction 1. Building the Australia-India Relationship- Bruce Bennett 2. Plural Cultures, Monolithic Structures- Kapila Vatsyayan 3. The Homogenised Other: Cultural Diversity and Social Inequality- Alan Mayne 4. Deliberative Democracy and Modern Pluralism- Subrata Mukherjee 5. ‘A long and winding road’. From Cultural Homogeneity to a Multicultural Society: An Analysis of Inclusion and Exclusion in Australia- David Roberts 6. Limits of Multiculturalism in a Liberal Polity: Need for a Shared Identity-Sushila Ramaswamy 7. “Australia is a Multicultural Community –you’ll feel at home”:Cultural Diversity and the Promotion of Australia Internationally- Andrew Hassam 8. Accommodation of Cultural Diversity in India: Reflections on Past and Present- Abdulrahim P. Vijapur 9. Gandhian Ideas on Cultural Diversity and Unity in India- Sailaja Gullapalli 10. Multiculturalism: Australian and Indian Approach-Sonu Trivedi 11. Post Colonial Formation, Paradigm Consolidation and Economic Marginalization- S. Ram Vemuri 12. Dalits and Indigenous Australians: Affirmative Actions and Existing Realities- Swaraj Basu 13. Exploring a Critical Tradition in Communications Research: A Cultural Discourse- Amita Singh 14. Education and Empowerment: Dalits and the Demand for Modern Education in Colonial India- Shashi Bhushan Upadhyay 15. Recent Developments in Indian Migration to Australia (with Special Reference to Academics)- Graeme Hugo and Gouranga Lal Dasvarma 16. Cultural Diversity in the Australian Classroom and the Experience of Arab-Muslim Students- Sally Percival Wood 17. Working Australia Efficiency and Equity- Liz Hall 18. North-East India’s Cultural Diversity: Trends of Unrest and Marginalization- Sudhir Jacob George 19. Socio-economic Inequities of Tribal Communities in India- Priti Singh 20. Reinventing Australian Identity-D. Gopal 21. Identity and Rights of the Diaspora in the Post-colonial Era- R. Narayanan 22. Understanding Cultural Diversity: Reflections from the Americas- Satya R. Pattnayak Contributors Index

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Understanding how multiple environmental stressors interact to affect seagrass health (measured as morphological and physiological responses) is important for responding to global declines in seagrass populations. We investigated the interactive effects of temperature stress (24, 27, 30 and 32°C) and shading stress (75, 50, 25 and 0% shade treatments) on the seagrass Zostera muelleri over a 3-month period in laboratory mesocosms. Z. muelleri is widely distributed throughout the temperate and tropical waters of south and east coasts of Australia, and is regarded as a regionally significant species. Optimal growth was observed at 27°C, whereas rapid loss of living shoots and leaf mass occurred at 32°C. We found no difference in the concentration of photosynthetic pigments among temperature treatments by the end of the experiment; however, up-regulation of photoprotective pigments was observed at 30°C. Greater levels of shade resulting in high photochemical efficiencies, while elevated irradiance suppressed effective quantum yield (ΔF/FM'). Chlorophyll fluorescence fast induction curves (FIC) revealed that the J step amplitude was significantly higher in the 0% shade treatment after 8 weeks, indicating a closure of PSII reaction centres, which likely contributed to the decline in ΔF/FM' and photoinhibition under higher irradiance. Effective quantum yield of PSII (ΔF/FM') declined steadily in 32°C treatments, indicating thermal damage. Higher temperatures (30°C) resulted in reduced above-ground biomass ratio and smaller leaves, while reduced light led to a reduction in leaf and shoot density, above-ground biomass ratio, shoot biomass and an increase in leaf senescence. Surprisingly, light and temperature had few interactive effects on seagrass health, even though these two stressors had strong effects on seagrass health when tested in isolation. In summary, these results demonstrate that populations of Z. muelleri in south-eastern Australia are sensitive to small chronic temperature increases and light decreases that are predicted under future climate change scenarios.

Relevância:

100.00% 100.00%

Publicador: