108 resultados para Acting Black


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Interim, discontinuous or 'acting' management is an increasingly ubiquitous feature of universities. This paper asks: What are the implications of this for good academic governance? Should we understand this managerial dance as a symptom of the collapse of good managerial order or, by contrast, as a symptom of the robustness and flexibility of the organisational culture of the university? Or both? This paper answers 'all of the above' to these questions. It reaches that conclusion by examining relevant literature, theorising a methodology for reading the field of interim management, and by applying this theorising to an analysis of qualitative data collected as part of a national collaborative research project conducted in Australia.

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Pituitary adenylate cyclase-activating polypeptide (PACAP) is a neurotrophic peptide. Here, we show that PACAP recruits Rap1 into caveolin-enriched membrane subdomains in PC12 cells and activates Rap1, nuclear ERK1/2, Elk-1 and CREB in a caveolae-dependent manner. We reveal that GSK3β is a novel modulator in PACAP signalling. PACAP induces phosphorylation of serine 9 in GSK3β, which is inhibited by silencing Rap1. Lithium and valproate promote but wortmannin and LY294002 attenuate PACAP-induced phosphorylation of both GSK3β and ERK1/2, whereas MEK inhibitor PD98059 inhibits nerve growth factor- but not PACAP-induced phosphorylation of GSK3β, suggesting that GSK3β operates downstream of Rapt 1 but upstream of ERK1/2 in PACAP signalling. Inhibition or stimulation of GSK3β results in a 2-fold increase and 6-fold decrease in PACAP-induced neurite outgrowth, respectively. These results reveal an important role of caveolae in the signal transduction of PACAP and that GSK3β is a critical regulator in PACAP-induced neuronal differentiation.

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Recent progress in techniques of quantifying between‐individual differences of color‐based ornaments has revealed undiscovered possibilities for research in sexual selection. We present how the color spectra data can be comprehensively used for studying the importance of sexual ornaments in the black grouse and how these ornaments are related to a male condition. For this, we used both correlative field and experimental data. Field data indicated that older males had more chromatic coloration than yearlings. Blue chroma of males was correlated with male mating success. We experimentally manipulated yearling birds with testosterone implants and found that testosterone‐implanted males had impaired expression of several sexual ornaments: 10 months after the implantation, both structural‐based blue and carotenoid‐based red eye comb coloration were diminished, as well as lyre (tail) length. However, the manipulation did not affect vital traits under natural selection (wing length or body mass). Our data indicate that structural color is an important trait in sexual selection in this lekking species. Importantly, the data also indicate that male sexual ornaments are more susceptible to environmental conditions than the other male traits, thus showing their heightened condition dependency compared with the other traits mediating the honesty of signaling.

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The mechanisms of how tea and epigallocatechin-3-gallate (EGCG) lower body fat are not completely understood. This study investigated long-term administration of green tea (GT), black tea (BT), or isolated EGCG (1 mg/kg per day) on body composition, glucose tolerance, and gene expression related to energy metabolism and lipid homeostasis; it was hypothesized that all treatments would improve the indicators of metabolic syndrome. Rats were fed a 15% fat diet for 6 months from 4 weeks of age and were supplied GT, BT, EGCG, or water. GT and BT reduced body fat, whereas GT and EGCG increased lean mass. At 16 weeks GT, BT, and EGCG improved glucose tolerance. In the liver, GT and BT increased the expression of genes involved in fatty acid synthesis (SREBP-1c, FAS, MCD, ACC) and oxidation (PPAR-α, CPT-1, ACO); however, EGCG had no effect. In perirenal fat, genes that mediate adipocyte differentiation were suppressed by GT (Pref-1, C/EBP-β, and PPAR-γ) and BT (C/EBP-β), while decreasing LPL, HSL, and UCP-2 expression; EGCG increased expression of UCP-2 and PPAR-γ genes. Liver triacylglycerol content was unchanged. The results suggest that GT and BT suppressed adipocyte differentiation and fatty acid uptake into adipose tissue, while increasing fat synthesis and oxidation by the liver, without inducing hepatic fat accumulation. In contrast, EGCG increased markers of thermogenesis and differentiation in adipose tissue, while having no effect on liver or muscle tissues at this dose. These results show novel and separate mechanisms by which tea and EGCG may improve glucose tolerance and support a role for these compounds in obesity prevention.

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As apartheid gave way to political freedom in South Africa in the last quarter of the 20th century, chartered accounting firms began to hire black South African trainees for the first time. The study examines the oral histories of black chartered accountants within the context of social closure theory and South Africa’s changing political and ideological landscape. The evidence indicates that processes of professional closure and credentialing excluded the majority population from the ranks of the profession on basis of race and class throughout the period 1976–2000.

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The study is concerned with the history of black and white women in Australia during the colonial period. Particular emphasis is on the variety of cross-cultural relationships which developed between women during that time. As a starting point, male frontier violence is discussed and compared with the more moderate approach taken by women faced with threatening situations. Among Europeans, women are revealed as being generally less racist than men. This was a significant factor in their ability to forge bonds with black women and occasionally with black men. The way in which contacts with Aborigines were made is explored and the impact of them on the women concerned is assessed, as far as possible from both points of view. Until now, these experiences have been omitted from colonial history, yet I believe they were an important element in racial relations. It will be seen that some of these associations were warm, friendly and satisfying to both sides, and often included a good deal of mutual assistance. Others involved degrees of exploitation. Both are examined in detail, using a variety of sources which include the works of modern Aboriginal writers. This study presents a new aspect of the female experiences which was neglected until the emergence of the feminist historians in the 1960’s. It properly places women, both black and white, within Australian colonial history.

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This work studies the interactions and relationships that exist between Eastern Grey Kangaroos and Black Wallabies in their utilisation of spatial and trophic resources in a managed remnant woodland community. The thesis provides a closer understanding of the way in which these species impact upon their habitats. The Coranderrk Reserve, near Healesville in eastern Victoria, Australia was the study site. A floristic analysis of the communities of the study site was conducted. This consisted of plant biomass measurements, estimates of plant abundance and cover determination. Faecal pellets from Eastern Grey Kangaroos and Black Wallabies were collected from ten vegetation communities during three different plant productivity periods. The spatial and temporal distribution of the animals was identified by analysing the frequency of occurrence of faecal pellets in the various communities. The use of faecal pellet density as a measure of habitat utilisation was examined. Eastern Grey Kangaroos utilised communities which were characterised by the presence of a dense grassy statum. Black Wallabies were able to utilise all of the communities of the study site regardless of their floristic composition. A reference herbarium of the leaf epidermis of 233 possible forage plant species was accumulated. These epidermal specimens were prepared for Confocal Scanning Laser Microscopy. The information gained was enhanced and stored digitally. Diagnostic information critical for the identification of plant epidermal fragments was assembled into a computer database. This was used to assist in the recognition of unknown epidermal fragments in macropodid faeces. These epidermal plant recognition techniques enabled a list of the contents of Eastern Grey Kangaroo and Black Wallaby faeces during the sampling periods in the individual communities, to be accumulated. Eastern Grey Kangaroos utilised forage which consisted largely of grass and their diets were similar regardless of their feeding sites or the time of the year. Black Wallaby diets were heterogenous with wide variations over space and time observed. The implications of these findings for current wildlife management practices were considered. Black Wallaby and Eastern Grey Kangaroo herbivory have significant impacts on ecosystem integrity. Management strategies should seek to establish ecologically sustainable populations of both species in remnant woodlands where conservation values are important.

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This essay is concerned with the extent to which the attitudes and ideologies of colonial discourse continue to influence contemporary signifying practices in Australian adolescent historical fiction. Under scrutiny are three novels which take issue with the violent aspects of colonisation when so many members of the Indigenous population either died or were forcibly displaced: Melissa Lucashenko’s Killing Darcy, Gary Crew’s No Such Country and Mark Svendsen’s Poison Under Their Lips. Although these texts share a desire to interrogate monolithic versions of Australia’s history, it is argued that such motivations offer no guarantee that the implied audience is positioned to come to an understanding of perspectives belonging to ex-centric Others.

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Examines the potential for competition to occur between the Red-necked Wallaby and the Black Wallaby by examining the extent of overlap in their dietary preferences and in their utilisation of habitat at different times of the day and year. Significant separation occured between species to facilitate coexistence.

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Analyses the interaction between white and indigenous cultures, specifically the impact of the white practices of Christianisation, bureaucracy and commercialisation on indigenous women's cultural and religious practices, values and cosmology (Tjukurrpa), and argues that indigenous women's gynocentric cultural initiatives should be better resourced.