Orientador: Paulo Roberto Raposo Alentejano / Resumo: A energia é hoje um fator central e estratégica na vida da humanidade, e ganha ainda mais centralidade neste momento de crise econômica. Das atuais fontes utilizadas, todas colocadas sempre em questão por problemas sociais, ambientais ou econômicos que geram, porém sempre defendidas pelos que querem retomar as taxas de acumulação do capital, o petróleo é uma das principais. No mundo sem dúvida o petróleo é hoje uma fonte de energia muito importante e intensamente disputada. As últimas invasões mundiais e massacre contra os povos, patrocinadas principalmente pelos Estados Unidos da América visam o controle das fontes de petróleo, em especial no Oriente Médio. No Brasil a exploração deste mineral inicia junto com uma grande luta de nosso povo afirmando que “O petróleo é nosso”, com a criação de uma importante empresa a Petrobras e do monopólio estatal. A partir dos anos 90, período neoliberal, esta configuração legal foi alterada abrindo-se a possibilidade de exploração por empresas privadas, que passam a serem donas do petróleo que conseguirem extrair em território brasileiro. A ascensão de um governo de composição neodesenvolvimentista, a partir de 2002, a descoberta do Pré-sal em 2006, traz à tona o debate sobre o destino desta importante riqueza, criando as condições para a aprovação de um novo marco legal para o pré-sal. A partir de 2006 percebe-se um grande movimento desta indústria, e em especial da Petrobras, que consolida o Brasil como país em boas condições para o seu... (Resumo completo, clicar acesso eletrônico abaixo) / Mestre

Three folded maps (1 col.) in pocket. Bibliography: leaves 81-94.

Bibliography: p.127-141.

Typescript (Photocopy) Copies of 4 published papers co-authored by author, and 7 maps, in back cover pocket. Bibliography: leaves 203-218.

This study researched two major aspects of the primary school principalship in the Northern Territory and Australian Capital Territory viz., (1) How current trends in educational governance have affected the role of the principal, and (2) Assessment and selection procedures used for promotion to the principalship in the present educational environment. The context of the study has been outlined by presenting a brief historical and organisational overview of public education in both Territories, along with an examination of the literature on recent trends and issues in educational governance and promotion procedures. The research methodology used to examine the questions posed in this study is qualitative or descriptive in nature. The data was collected through the use of a semistructured interview technique and represents the ideas, opinions and perceptions of a specially targeted group of principals and aspiring principals from both education systems. The findings demonstrated that many aspects of the role of the primary principalship in the N.T. and A.C.T. are changing, due to a new set of values in educational policymaking and increased political control. There was a high degree of similarity between respondents in each Territory in regard to how the role is being reshaped. It was also found that the level of support provided by both systems to assist principals in coping with the changes has been inadequate and that the changes have led to a degree of conflict and new job-related pressures for most primary school principals. It was concluded that assessment and selection procedures should be rigorous and demanding, commensurate with the significance of the position. In this regard both educational systems need to improve present procedures by addressing perceived weaknesses. To this end assessment centres may have a role to play. Finally, further implications of the conclusions are addressed in terms of the necessity for thorough preparation and training of aspirants to the principalship to enhance their chance of selection and help them cope with the new expectations and demands of the position. This responsibility should be shared between the aspirant, professional associations and the employing education department.

After outlining the structure of the Capital Territory Health Commission in Canberra, Australia and detailing the origins of the field study within this sytem, the problem of morale within work environments is examined. This examination reviews local research as well as overseas studies and in particular looks at the relationship of morale to both quality of work life and quality of life generally. The question of work within the local health system is then investigated in detail using questionnaire and search workshop procedures. The findings from these two approaches both support and confirm each other, thereby providing a comprehensive picture of the quality of work life within the local health system. From the results of these investigations the systemic nature of the morale problem within the health system is noted and discussed. The recommendations for remediation proposed from within the system are examined and evaluated. The study then explores the issue of potential conflict between bureaucratically organised systems and the delivery of effective health services. The study also confirms the place of power, trust and communication in changing morale. One conclusion is that continuing workshop and action research methods could be of use in helping the health service meet future objectives.

Pastoralism is the major economic activity in the Victoria River District (VRD), and is dependent on sustainable pasture use. Analysing grazing practices for sustainability requires knowledge of annual pasture production, but little quantitative data is available. A study was undertaken to develop the capacity for predicting native pasture growth in the VRD using systems modelling. Twenty one field sites were studied for two years using a standard methodology, and the Grass Production (GRASP) model was calibrated using this field data. End of growing season total standing dry matter (TSDM) was well predicted (mean = 2513kg/ha, r2(1:1) = 0.966, RMSE = 132kg/ha, and 98% of predictions within measurement variance). Developing generic parameters for common soil and pasture types allowed extrapolation of the model. Predictive skill declined when using generic parameters (r2(1:1) = -0.265, RMSE = 807kg/ha and 64% of predictions within measurement variance). However, observation and prediction means were very similar, indicating that generic parameters are suitable for broad scale applications, but site-specific parameters are necessary if a high degree of accuracy is required. Parameters controlling plant water uptake largely determine pasture growth in low rainfall years, while nitrogen uptake and dilution parameters limit growth in high rainfall years. Pasture growth is constrained by nitrogen supply in 91% of seasons in the northern VRD, and in 25% of seasons in the drier south. Example applications of the model were demonstrated. Current and expected future levels of pasture utilisation in the district were calculated, showing a current average of 16%, rising to an expected 20% in the next decade. These levels are within the safe utilisation rates recommended for the region. Economic analysis shows positive returns ($4.54 million per year) from pasture augmentation with introduced legumes if past problems with establishment and persistence can be overcome. Model performance would be improved by accounting for simultaneous wetting of the entire profile in cracking clay soils, calculating growth of perennial and annual pasture species separately, and simulating variation in nitrogen uptake and dilution between years. Incorporation of these processes must be balanced against the increased complexity of the model and the additional data required for calibration. / Thesis(PhD)-- School of Agriculture, Food and Wine, 2006

Brunhes, Matuyama, Kaena and Mammoth age basaltic lava (Selkirk Volcanics - TQS) as well as interbedded sediments were sampled in west-central Yukon Territory, Canada. Paleomagnetic sampling of basalt mapped as TQS along a 370 kilometre transect suggests that early eruptions of TQS occurred coevally over a significant distance to the north of Fort Selkirk. Basal basalt at Ne Ch'e Ddhawa pre-dates continental glaciation in Yukon and is older than the Fort Selkirk Vent (Lower Mushroom), previously thought to be the oldest eruptive vent at Fort Selkirk. The high confining pressures required to form pillow lava suggest subglacial eruptions at Mushroom section. An Early Pleistocene Fort Selkirk glaciation sequence (till and outwash) was reversely magnetized and assigned to the Late Matuyama chron between oxygen isotope stages 62 and 56 inclusive. A lateral moraine on Ne Ch'e Ddhawa was reversely magnetized and therefore assigned to one of the younger Pre-Reid glaciations. i / xi, 123 leaves : ill. (some col.) ; 29 cm.

Bibliography: p.127-141. / xv, 210 p. : ill. (some col.), maps (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Geology, 2001?

Pastoralism is the major economic activity in the Victoria River District (VRD), and is dependent on sustainable pasture use. Analysing grazing practices for sustainability requires knowledge of annual pasture production, but little quantitative data is available. A study was undertaken to develop the capacity for predicting native pasture growth in the VRD using systems modelling. Twenty one field sites were studied for two years using a standard methodology, and the Grass Production (GRASP) model was calibrated using this field data. End of growing season total standing dry matter (TSDM) was well predicted (mean = 2513kg/ha, r2(1:1) = 0.966, RMSE = 132kg/ha, and 98% of predictions within measurement variance). Developing generic parameters for common soil and pasture types allowed extrapolation of the model. Predictive skill declined when using generic parameters (r2(1:1) = -0.265, RMSE = 807kg/ha and 64% of predictions within measurement variance). However, observation and prediction means were very similar, indicating that generic parameters are suitable for broad scale applications, but site-specific parameters are necessary if a high degree of accuracy is required. Parameters controlling plant water uptake largely determine pasture growth in low rainfall years, while nitrogen uptake and dilution parameters limit growth in high rainfall years. Pasture growth is constrained by nitrogen supply in 91% of seasons in the northern VRD, and in 25% of seasons in the drier south. Example applications of the model were demonstrated. Current and expected future levels of pasture utilisation in the district were calculated, showing a current average of 16%, rising to an expected 20% in the next decade. These levels are within the safe utilisation rates recommended for the region. Economic analysis shows positive returns ($4.54 million per year) from pasture augmentation with introduced legumes if past problems with establishment and persistence can be overcome. Model performance would be improved by accounting for simultaneous wetting of the entire profile in cracking clay soils, calculating growth of perennial and annual pasture species separately, and simulating variation in nitrogen uptake and dilution between years. Incorporation of these processes must be balanced against the increased complexity of the model and the additional data required for calibration. / Thesis(PhD)-- School of Agriculture, Food and Wine, 2006