Abstract not available

Includes list of publications issued during the candidature. / Bibliography: leaves 176-197. / iii, ix, 197, [22] leaves : ill., maps ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Phosphorus retention was measured in five pilot-scaled constructed wetlands with different configurations in terms of macrophyte species and substrates in order to evaluate the phosphorus removal efficiency of water plants and substrates in experimental ponds; assess the contribution of macrophytes to phosphorus removal through direct uptake, modification of water chemistry and impacts on the phosphorus adsorption characteristics of substrate; and, contribute to the optimal design and operation of constructed wetlands for the treatment of agricultural drainage water. / Thesis (Ph.D.)--University of Adelaide, Dept. of Soil and Water, 2002?

"February 2003." Corrigenda for, inserted at back Includes bibliographical references (leaves 475-524 ) A methodology is formulated for the successful design and implementation of artificial neural networks (ANN) models for water resources applications. Attention is paid to each of the steps that should be followed in order to develop an optimal ANN model; including when ANNs should be used in preference to more conventional statistical models; dividing the available data into subsets for modelling purposes; deciding on a suitable data transformation; determination of significant model inputs; choice of network type and architecture; selection of an appropriate performance measure; training (optimisation) of the networks weights; and, deployment of the optimised ANN model in an operational environment. The developed methodology is successfully applied to two water resorces case studies; the forecasting of salinity in the River Murray at Murray Bridge, South Australia; and the the forecasting of cyanobacteria (Anabaena spp.) in the River Murray at Morgan, South Australia.

Dams and weirs are widely implicated in large-scale declines in both the range and abundance of aquatic fauna. Although many factors are involved, such declines are commonly attributed to the prevention or reduction of migration, reductions in available habitat, alteration of natural flow regimes and changes to physicochemical characteristics. In Australia, studies into the ecological effects of these impacts are limited, and have concentrated mainly on species of recreational and commercial importance. Subsequently, the adverse effects of dams and weirs, and suitable methods of mitigation, remain largely unknown for many other taxa. Therefore, the major aim of this thesis is to investigate the ecological effects of dam and weir construction on previously unstudied migratory assemblages of fish and macroinvertebrates in the Murray-Darling Basin. It is anticipated that the results of these studies will feed back into improved management strategies that help arrest the previously observed declines of aquatic fauna. Initially, fish communities were sampled, by boat electrofishing, from both reference sites and downstream of Balranald and Redbank weirs on the lower reaches of the Murrumbidgee River, Australia. Sampling was stratified over large spatial and temporal scales to gain a comprehensive understanding of species most affected by the presence of these two barriers. In general, the weirs obstructed fish migrations during summer and autumn and many species of small-bodied fish such as Australian smelt, western carp gudgeon, fly-specked hardyhead and crimson-spotted rainbowfish accumulated downstream of Balranald Weir. In addition, downstream accumulations of juveniles of larger-bodied species such as bony herring, common carp and goldfish were also detected. Although many previous studies had either documented or hypothesised that upstream migrating fish accumulate downstream of migration barriers, none attempted to quantify the size of such populations. Therefore, a simple but efficient method to estimate the size of migratory populations was assessed at the Balranald Weir site. The application of two commonly used estimation techniques yielded relatively reliable results for seven species that accumulated downstream of the weir. Population size estimates were greatest for most species during summer and autumn, where accumulations as high as 800 fish per day were detected. The largest calculated population size estimates, in addition to the greatest temporal variation, of any individual species was observed in bony herring. Given the simplicity of the technique and the relative accuracy of population estimates, it was concluded that these methods could easily be applied to other weirs where the size of migratory populations is of particular interest. A study investigating the effects of Yanco Weir on the diets of three migratory percichthyid species, Murray cod, trout cod and golden perch was also conducted. Observed spatial variation in a number of trophic processes strongly implicated Yanco Weir as a major contributor to increased competition among percichthyid species on the Murrumbidgee River. The greater relative abundance of percichthyids from downstream samples, combined with increases in dietary overlap and a greater percentage of empty stomachs, also suggested percichthyids may be significantly affecting the relative abundance of potential prey items such as freshwater prawns and Australian smelt. These significant changes in dietary composition were likely related to migratory behaviour, as these species accumulated downstream of the weir, and could be readily expected at other sites where passage is obstructed. It was suggested that the construction of suitable fish passage facilities would effectively reduce the probability of migratory fish accumulating and, subsequently, potential effects of dams and weirs on trophic processes. Since it was established that dams and weirs of the Murrumbidgee River were significantly affecting migratory fish communities, an innovative but relatively inexpensive fishway design, the Deelder fish lock (after Deelder, 1958), was constructed and assessed for wider application throughout the Murray-Darling Basin. The Deelder lock was effective at mitigating the effects of Balranald Weir by providing passage for a wide range of size classes and species of fish; but importantly, the structure enabled the passage of most species previously observed to accumulate downstream of the structure. Most significant was the ability of the fish lock to pass substantial numbers of small-bodied fish, which were previously not considered migratory, suggesting that these species should be considered when developing options to mitigate the effects of other dams and weirs throughout the Murray-Darling Basin. A significant finding of this study was the realisation that substantially more species and size classes of Australian native fish are migratory than previously thought. Subsequently, it is recommended that, when designing facilities to mitigate the effects of a dam or weir, the structure of the entire migratory community is considered when developing operating parameters. Various options for mitigating the effects of dams and weirs are discussed, but it was concluded that the construction of effective fishways would be the most appropriate means of restoring migration pathways to Australian native fish. A strategic approach for assessing and adaptively mitigating the effects of dams and weirs is presented and discussed.

Copies of author's previously published articles inserted. / Bibliography: p. 377-400. / xiv, 400, [20] p., [5] leaves of plates : ill. (some col.), maps ; 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 Zoology, 1995

"February 2003." / Corrigenda for, inserted at back / Includes bibliographical references (leaves 475-524 ) / xxx, 524 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / A methodology is formulated for the successful design and implementation of artificial neural networks (ANN) models for water resources applications. Attention is paid to each of the steps that should be followed in order to develop an optimal ANN model; including when ANNs should be used in preference to more conventional statistical models; dividing the available data into subsets for modelling purposes; deciding on a suitable data transformation; determination of significant model inputs; choice of network type and architecture; selection of an appropriate performance measure; training (optimisation) of the networks weights; and, deployment of the optimised ANN model in an operational environment. The developed methodology is successfully applied to two water resorces case studies; the forecasting of salinity in the River Murray at Murray Bridge, South Australia; and the the forecasting of cyanobacteria (Anabaena spp.) in the River Murray at Morgan, South Australia. / Thesis (Ph.D.)--University of Adelaide, School of Civil and Environmental Engineering, 2003

Thesis (Ph.D.) -- University of Western Sydney, 2004. / "A thesis submitted for the degree of Doctor of Philosophy of the University of Western Sydney, Sydney, January 2004." Includes bibliography : leaves 359 - 369.

[pt] No cenário político do Estados Unidos após 1945, o libertarianismo esteve intrinsicamente ligado ao ressurgimento do movimento conservador. Entretanto, no efervescente ambiente político da década de 60, alguns intelectuais libertários, como Murray Rothbard, decidiram trilhar um caminho diferente. Esses intelectuais passaram a reavaliar suas opções ideológicas, buscando, assim, por alternativas para lidar com os principais dilemas da época. Com a finalidade de melhor entender essas mudanças, esta dissertação teve como objetivo investigar a reinterpretação do libertarianismo operada por Murray Rothbard em sua atuação na revista Left and Right: A Journal of Libertarian Thought, criada em 1965. Para isso, foram apresentadas as principais expressões do pensamento libertário na política norte-americana dos séculos XIX e XX. Em seguida, analisou-se os textos de Rothbard presentes na Left and Right entre 1965 e 1968, a fim de entender suas principais ideias, alianças e conflitos políticos. Dessa forma, as estratégias utilizadas por Rothbard em sua reinterpretação do libertarianismo foram melhor elucidadas, tornando este trabalho uma importante oportunidade de refinar as concepções acerca dessa corrente política no cenário norte-americano. / [en] In the US political scenario of the aftermath of 1945, libertarianism became intrinsically connected with the rebirth of the conservative movement. Nevertheless, the effusive political environment of the 1960s made Murray Rothbard and other few libertarian intellectuals choose and take a different road to travel. These intellectuals began reviewing some of their ideological options and, therefore, looking for alternatives in order to deal with their main epochal dilemma. In order to better understand these many changes, I intend, in this Dissertation, to investigate the reinterpretation of libertarianism proposed by Murray Rothbard through his writings in Left and Right. A Journal of Libertarian Though, created in 1965. In order to accomplish this, I began by commenting on some of the main voices of the 19 th - and 20 th - century libertarian thought in American politics. I then analyzed all Rothbard articles in Left and Right, between 1965 and 1968, so that some of his main ideas, and understandings regarding political alliances and conflicts, could be made clear. The strategies he enacted in his singular reinterpretation of libertarianism seem to have been better elucidated with this work. We expect such an effort turns out to be a helpful aid in the future refining of ideas and conceptions still in use in the rhetorics of North-American political scene.

No description available.

Thesis advisor: S.J., David Hollenbach / This dissertation explores the possible contribution of the Catholic tradition to the current debate in the field of international studies regarding the appropriate role of state sovereignty in global governance. The dissertation addresses the issue from the perspective of ideas, and is divided into three parts. First, it describes how the modern sovereign states system emerged as a result of prior revolutions in ideas about justice and political authority thereby drawing on the work of Daniel Philpott. It then examines the writings of three twentieth-century Catholic writers who treated the issue of sovereignty as part of their reflections on international affairs: Luigi Sturzo, Jacques Maritain, and John Courtney Murray. Finally, the dissertation correlates the work of Sturzo, Maritain, and Murray with a number of contemporary political theorists of cosmopolitan democracy. It argues not only that there are significant similarities between Sturzo, Maritain, and Murray and cosmopolitan theory, but also that the Catholic tradition can complement cosmopolitanism in a helpful manner. Thus the dissertation suggests a way forward for the Catholic tradition with respect to the issue of state sovereignty and global governance, and it provides a challenge to the Catholic community regarding this matter. / Thesis (PhD) — Boston College, 2010. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Theology.