Abstract The quantum-mechanical effects typical for single atoms or molecules can be reproduced in micrometer-scale electric devices. In these systems the essential component is a small Josephson junction (JJ) consisting of two superconductors separated by a thin insulator. The quantum phenomena can be controlled in real time by external signals and have a great potential for novel applications. However, their fragility on uncontrolled disturbance caused by typical nearby environments is a drawback for quantum information science, but a virtue for detector technology. Motivated by this we have theoretically studied transistor kind of devices based on single-charge tunneling through small JJs. A common factor of the research is the analysis of the interplay between the coherent Cooper-pair (charge carriers in the superconducting state) tunneling and incoherent environmental processes. In the first work we calculate the current due to incoherent Cooper-pair tunneling through a voltage-biased small JJ in series with large JJs and compare the results with recent experiments. We are able to reproduce the main experimental features and interpret these as traces of energy levels and energy bands of the mesoscopic device. In the second work we analyze a similar circuit (asymmetric single-Cooper-pair transistor) but under the assumption that the Cooper-pair tunneling is mainly coherent. This predicts new resonant transport voltages in the circuit due to higher-order processes. However, no clear traces of most of them are seen in the experiments, and similar discrepancy is present also in the case of the symmetric circuit. We continue to study this problem by modeling the interplay between the coherent and incoherent processes more accurately using a density-matrix approach. By this we are able to demonstrate that in typical conditions most of these resonances are indeed washed out by strong decoherence caused by the environment. We also analyze the contribution of three typical weakly interacting dissipative environments: electromagnetic environment, spurious charge fluctuators in the nearby insulating materials, and quasiparticles. In the last work we model the dynamics of a current-biased JJ perturbed by a smaller JJ using a similar density-matrix approach. We demonstrate that the small JJ can be used also as a detector of the energy-band dynamics in a current biased JJ. The method is also used for modeling the charge transport in the Bloch-oscillating transistor.

No description available.

[pt] A pesquisa busca estabelecer procedimentos e parâmetros para analisar e classificar a linguagem visual dos créditos de titulação, através da observação da obra de Kyle Cooper e da desconstrução dos créditos de titulação em seus componentes. / [en] The research seeks to stablish procedures and parameters to analyze and classify the visual language in main title sequences, through the observation of Kyle Cooper`s work and the deconstruction of the main title sequences in its components.

[pt] A teoria de Bardin, Cooper e Schrieffer (BSC) teve enorme sucesso na explicação das propriedades da maior parte dos materiais supercondutores. Esses materiais, onde a teoria BCS se aplica, são denominados supercondutores convencionais. A observação do aparecimento de supercondutividade não-convencional em diversos materiais reabriu as discussões sobre o fenômeno. Enquanto a transição para fase supercondutora em materiais convencionais envolve apenas a quebra da simetria de calibre, no caso dos materiais não-convencionais, a mesma é caracterizada pela quebra de diversas simetrias adicionais. O mecanismo microscópico da supercondutividade nessas novas classes de materiais ainda é uma questão em aberto. no entanto, muitas propriedades físicas podem ser extraídas apenas de conciderações sobre as simetrias do parâmetro de ordem supercondutor, que está intimamente ligadoá função de onda do par de Cooper. Neste trabalho são analisadas algumas propriedades destes novos supercondutores baseadas em critérios de simetria. Um enfoque especial é dado à classe dos supercondutores não-convencionais onde há uma quebra de simetria de reversão temporal. Para estes materiais são previstas algumas propriedade bem pouco usuais. Quando a estrutura cristalina tiver alta simetria, é possível o surgimento de uma polarização de um spin no condensado. Nestes casos, a magnetização intrínseca pode levar à formação de uma fase espontânea de vórtices. Ocorre também uma forte anisotropia na resposta do supercondutor frente à aplicação de campos magnéticos externos. / [en] The theory of Bardeen, Cooper and Schrieffer (BCS) had great success in explaining most properties of superconducting materials. These materials, where BCS applies, are denominated conventional superconductors. the experimental evidence of unconventional superconductivity in several materials reopened discussions about the phenomenon. While, in conventional materials, the superconducting phase involves only the breaking of gauge symmetry, in the unconventional materials the phase is characterized by several additional broken symmetries. The microscope mechanism of superconductivity in this new classes of materials is still an open question. However, many phisical properties can be understood considering only symmetries of the superconducting order parameter, which is intimately linked to Cooper pair wave function. In this work some properties of these new superconductors are analyzed based symmetry criteria. Special emphasis is given to the class of unconventional superconductors where time- reversal symmetry is broken. For these materials, some unusual properties are predicted. When the crystal structure has high symmetry, the appearence of a spin polarization in the condensate is possible. In these cases, an intrinsic magnetization can lead to the information of a spontanous vortex phase. A strong anisotropic response to an externally applied magnetic field also occurs.

Bibliography: leaves 94-105. / xvi, 105, [91] leaves : ill. (some col), maps (some col.) ; 30 cm. 50 maps in box; 35 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, National Centre for Petroleum Geology and Geophysics, 1995?

<p>The aim of this study is to analyse the archetypical patterns and symbols in Susan Cooper’s The Dark is Rising. An archetype is, in literary studies, a concept used to describe an image, symbol or narrative pattern which is very frequently occurring , for example the Hero archetype. Archetype theories today are mainly based on the work of psychiatrist C.G. Jung or literary theorist Northrop Frye.</p><p>The Dark is Rising is a series of five fantasy books for children, in which an old struggle between two cosmic forces, Light and Dark, is about to reach its final battle. This study shows how The Dark is Rising follows an archetypical narrative pattern in which the aim is to create a whole – the Self, in Jungian theory. The conception of the world in The Dark is Rising is an archetypical one. The world was once whole, but later divided in two opposing forces – Light and Dark. In the final book, when the Dark is defeated and the Light leaves Earth to the humans, the world is whole again. The life of main character Will Stanton also follows this pattern, making him an archetypical Hero. His development can be seen as the process of individuation, which in Jungian theory is the process of creating a whole, unified Self by integrating the conscious and the unconscious. Also the Mandala, which is a very important symbol in the books, is an archetypical symbol for unity and the Self.</p>

The aim of this study is to analyse the archetypical patterns and symbols in Susan Cooper’s The Dark is Rising. An archetype is, in literary studies, a concept used to describe an image, symbol or narrative pattern which is very frequently occurring , for example the Hero archetype. Archetype theories today are mainly based on the work of psychiatrist C.G. Jung or literary theorist Northrop Frye. The Dark is Rising is a series of five fantasy books for children, in which an old struggle between two cosmic forces, Light and Dark, is about to reach its final battle. This study shows how The Dark is Rising follows an archetypical narrative pattern in which the aim is to create a whole – the Self, in Jungian theory. The conception of the world in The Dark is Rising is an archetypical one. The world was once whole, but later divided in two opposing forces – Light and Dark. In the final book, when the Dark is defeated and the Light leaves Earth to the humans, the world is whole again. The life of main character Will Stanton also follows this pattern, making him an archetypical Hero. His development can be seen as the process of individuation, which in Jungian theory is the process of creating a whole, unified Self by integrating the conscious and the unconscious. Also the Mandala, which is a very important symbol in the books, is an archetypical symbol for unity and the Self.

Habilitationsschrift--Fachbereich 11--Mainz--Johannes Gutenberg-Universität, 2005. / Bibliogr. p. 271-283.

Copies of author's previously published articles inserted. / Bibliography: leaves 317-359. / xxii, 360 leaves : 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. / Examines the generality of the Flood Pulse Concept as a model for the role of flow in large floodplain rivers of all climatic zones and reviews the literature on hydrology-biology relations, with particular reference to the ecology of riverine fish. Using techniques of ordination, clustering and analysis of similarities (ANOSIM), examines the relations between flow variability, econology and climate in large rivers worldwide. Using a fie-year database for Cooper Creek in Central Australia, relates structures of fish, macroinvertebrate and zooplankton assemblages and indices of fish health and behaviour to hydrology at several spatial and temporal scales. These relations are established using multivariate techniques, univariate correlation and regression, and neural networks modelling. / Thesis (Ph.D.)--University of Adelaide, Dept. of Zoology, 1999

Copies of author's previously published articles inserted. / Bibliography: leaves 317-359. / xxii, 360 leaves : 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. / Examines the generality of the Flood Pulse Concept as a model for the role of flow in large floodplain rivers of all climatic zones and reviews the literature on hydrology-biology relations, with particular reference to the ecology of riverine fish. Using techniques of ordination, clustering and analysis of similarities (ANOSIM), examines the relations between flow variability, econology and climate in large rivers worldwide. Using a fie-year database for Cooper Creek in Central Australia, relates structures of fish, macroinvertebrate and zooplankton assemblages and indices of fish health and behaviour to hydrology at several spatial and temporal scales. These relations are established using multivariate techniques, univariate correlation and regression, and neural networks modelling. / Thesis (Ph.D.)--University of Adelaide, Dept. of Zoology, 1999