The main topic of this research is the impact to the tsunami-inundated area of the southeast coast of Taiwan caused by earthquakes. According to regression relationship (G-R relation) between the earthquake magnitude and frequency proposed by Gutenberg and Richter (1944), the expected number of tsunamigenic earthquake is estimated. Using the linear shallow water equations of COMCOT (COrnell Multigrid COupled Tsunami model), the propagation of tsunami in the ocean is simulated, and the reciprocal Green's function was applied to save the computing time of COMCOT model. Then, the seismic solution parameters are substituted to acquire a water level distribution of tsunami. Solitary waves of different wave height are used to compute the range and the probability of tsunami inundation at the southeast coast of Taiwan.

The complete set of Green&rsquo / s functions for cylindrically layered media is presented. The formulations reported in the previously published work by Tokg&ouml / z (M.S.Thesis, 1997) are recalculated, the missing components are added and a solution to the problem when (rho equals rhop) is proposed. A hybrid method to calculate mutual coupling of electric or magnetic current elements on a cylindrically layered structure using MoM is proposed. For the calculation of MoM matrix entries, when (rho equals rhop) and fi is not close to fip, the closed-form Green&rsquo / s functions are employed. When fi is close to fip, since the spectral-domain Green&rsquo / s functions do not converge, MoM matrix elements are calculated in the spectral domain. The technique is applied to both printed dipoles and slots placed on a layered cylindrical structure. The computational efficiency of the anaysis of mutual coupling of printed elements on a cylindrically layered structure is increased with the use of proposed hybrid method due to use of closed-form Green&rsquo / s functions.

This thesis comprises modeling and simulation of an AC-DC converter (Battery charger). An AC-DC converter may cause a high frequency distortion in the electrical power network or augment the existing distortion caused by other devices connected to the network. The goal is to design a controller for suppressing this noise at a reasonable level. We hope the thesis can be considered as a step forward to solve the original problem. One needs an accurate model of the AC-DC converter, to design such a controller. This study tries to clarify the effects of theline inductance on the performance of the converter by modeling and simulating the converter during the commutation time. The idea is to model and simulate the converter for two different conditions; first in the Normal condition by neglecting the effect of line impedance, second in the Commutation condition by considering the effect of the line impedance on commutation of the diodes. One can perform a complete simulation of the converter with combining these two models. The thesis deals with AC-DC converters, Hamiltonian-port modeling, simulation and MATLAB programming using the functionality of the S-function and SIMULINK.

Im Jahr 2006, in einem Papier in Compositio Titel "Bounds auf kanonische Green-Funktionen" J. Jorgenson und J. Kramer, haben optimale Schranken für den hyperbolischen und kanonischen Green-Funktionen auf einem kompakten hyperbolischen Riemannschen Fläche definiert abgeleitet. Diese Schätzungen wurden im Hinblick auf abgeleitete Invarianten aus hyperbolischen Geometrie der Riemannschen Fläche. Als Anwendung abgeleitet sie Schranken für die kanonische Green-Funktionen durch Abdeckungen und für Familien von Modulkurven. In dieser Arbeit erweitern wir ihre Methoden nichtkompakten hyperbolischen Riemann Oberflächen und leiten ähnliche Schranken für den hyperbolischen und kanonischen Green-Funktionen auf einem nichtkompakten hyperbolischen Riemannschen Fläche definiert. / In 2006, in a paper in Compositio titled "Bounds on canonical Green''s functions", J. Jorgenson and J. Kramer have derived optimal bounds for the hyperbolic and canonical Green''s functions defined on a compact hyperbolic Riemann surface. These estimates were derived in terms of invariants coming from hyperbolic geometry of the Riemann surface. As an application, they deduced bounds for the canonical Green''s functions through covers and for families of modular curves. In this thesis, we extend their methods to noncompact hyperbolic Riemann surfaces and derive similar bounds for the hyperbolic and canonical Green''s functions defined on a noncompact hyperbolic Riemann surface.

Made available in DSpace on 2016-04-28T20:37:40Z (GMT). No. of bitstreams: 1 Cristiane Palmeira de Oliveira Barreto.pdf: 2017234 bytes, checksum: 702acc48673d621e2b9f244d025493ec (MD5) Previous issue date: 2011-05-06 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The following dissertation has the purpose of studying the relation between mothering and mother s function in neonatal ICU. I intentionally propose to set a distance between the two concepts, being mothering the incumbency of the necessary caretaking for survival and mother s function, the practice of a symbolic function that relates the subject to its psychic constitution in its relation with the language field. In the present study, the inquiry consists in verifying whether the difficulty in practicing mothering, which occurs within the neonatal intensive care unit, may interfere with the conditions that support mother function or not, as a rule, practiced by the mother. The inquiry was conducted at a private hospital in São Paulo city, with mothers of both male and female babies, born preterm and admitted at the neonatal ICU and, subsequently, after discharge. The clinical extracts of the mother s saying during the interviews and presented in this paper are analyzed in the light of the Freud and Lacan psychoanalysis theory. And, regarding the investigation of the conditions for the performance of mother s function, I sought inspiration on the four theoretical axis formulated in the Clinical Indicators of Risk for the Child Development (IRDI). By listening to the mothers during and after the hospital admission reveals the presence of psychic impact caused by the preterm birth of a child and the admission in the neonatal ICU, as well as the difficulty in mothering the baby. Albeit, despite the psychic rapture, in the analysis of the symbolic function based on the four fundamental operations, deduced by me according to the IRDI -, it was possible to notice conditions for the mother s function to be performed / A presente dissertação tem como objetivo estudar a relação entre a maternagem e a função materna em UTI Neonatal. Proponho propositalmente um distanciamento entre os dois conceitos, onde à maternagem cabe a incumbência dos cuidados necessários à sobrevivência e à função materna o exercício de uma função simbólica - que remete o sujeito à dimensão de sua constituição psíquica por sua relação com o campo da linguagem. Neste trabalho, a investigação consiste em verificar se a dificuldade no exercício da maternagem, que ocorre no âmbito de uma unidade de terapia intensiva neonatal, pode interferir nas condições de sustentação da função materna, via de regra exercida pela mãe. A pesquisa foi realizada em um hospital da rede privada de saúde da cidade de São Paulo, com mães de bebês de ambos os sexos, nascidos prematuros e internados na UTI Neonatal e, posteriormente, no pós-alta. Os recortes clínicos das falas das mães em entrevista e apresentados neste trabalho são analisados à luz da teoria psicanalítica de Freud e de Lacan. E, para a investigação das condições para o exercício da função materna, inspirei-me nos quatro eixos teóricos formulados na pesquisa Indicadores Clínicos de Risco para o Desenvolvimento Infantil (IRDI). A escuta das mães durante e após a hospitalização revela a presença de sofrimento pelo impacto psíquico causado pelo nascimento prematuro de um filho e a internação em UTI Neonatal, bem como pela dificuldade em maternar o bebê. No entanto, apesar do arrebatamento psíquico, na análise da função simbólica a partir das quatro operações fundamentais, deduzidas por mim a partir dos IRDI -, foi possível notar as condições para que a função materna possa vir a se desempenhar

Numerical analysis of periodic structures in layered media is usually accomplished by using Method of Moments which requires the formation of the impedance matrix of the structure. The construction of this impedance matrix requires the evaluation of the periodic Green&rsquo / s function in layered media which is expressed as an infinite series in terms of the spectral domain Green&rsquo / s function. The slow converging nature of this series make these kinds of analysis computationally expensive. Although some papers have proposed methods to accelerate the computation of these series successfully for a single frequency point, it is still very computation intensive to obtain the frequency response of the structure over a band of frequencies. In this thesis, Discrete Complex Image Method (DCIM) is utilized for the efficient computation of the periodic Green&rsquo / s function. First, the spectral domain Green&rsquo / s function in layered media is approximated by complex exponentials through the use of DCIM. During the application of the DCIM, three-level approximation scheme is employed to improve accuracy. Then, Ewald&rsquo / s transformation is applied to accelerate the computation of the infinite series involved in the periodic Green&rsquo / s functions. The accuracy and the efficiency of the method is demonstrated through numerical examples.

No âmbito da teoria quântica de campos (TQC) foram estudados modelos de quench exatamente solúveis. Nestes modelos, obteve-se uma generalização do ansatz de Kadanoff-Baym que se mantém em todos intervalos de tempo. Algumas hipóteses sobre fenômenos de não-equilíbrio em TQC em temperaturas finitas foram analisadas e estendidas neste contexto. Para tanto, examinamos as funções de Green nesses modelos e os comparamos com os resultados aproximados que são frequentemente usados na literatura. Um dos modelos descreve sistemas de não-equilíbrio do tipo vítreo. Esses sistemas exibem um comportamento que é compatível com o esperado do teorema de flutuação-dissipação. As propriedades básicas foram consistentemente deduzidas e resultados explícitos para a temperatura efetiva e frequências características foram obtidas. / We have studied exactly quenched models in the context of Quantum Field Theory(QFT). In these models, a generalization of the Kadanoff-Baym ansatz was obtained which holds at all times. Some assumptions concerning non-equilibrium phenomena in QFT at finite temperatures were analysed and extended in this framework. To this end, we have examined the Green\'s functions in these models and compared them with the approximated results which are often used in the literature. One of the models describes non-equilibrium systems of the glassy-kind. Such systems exhibit a behaviour which is compatible with that expected from the fluctuation-dissipation theorem. The basic properties were consistently deduced and explicit results for the effective temperature and characteristic frequencies were obtained.

In this thesis, a simulation package for the Six Degrees of Freedom (6DOF) motion of an underwater vehicle is developed. Mathematical modeling of an underwater vehicle is done and the parameters needed to write such a simulation package are obtained from an existing underwater vehicle available in the literature. Basic equations of motion are developed to simulate the motion of the underwater vehicle and the parameters needed for the hydrodynamic modeling of the vehicle is obtained from the available literature. 6DOF simulation package prepared for the underwater vehicle was developed using the MATLAB environment. S-function hierarchy is developed using the same platform with C++ programming language. With the usage of S-functions the problems related to the speed of the platform have been eliminated. The use of Sfunction hierarchy brought out the opportunity of running the simulation package on other independent platforms and get results for the simulation.

Wellenleiter Quantenelektrodynamik (Wellenleiter QED) ist ein wichtiger Baustein in vielen zukünftigen, auf Quantenmechanik basierenden Technologien wie z.B. Quantencomputer. Ein typisches Modellsystem besteht aus einem Zwei-Niveau-System (two level system, TLS), das an einen eindimensionalen Wellenleiter gekoppelt wurde. Der Wellenleiter ist dabei durch eine Dispersionsrelation charakterisiert und kann unter anderem Bandkanten enthalten. Wir haben in der Dissertation einen neuartigen Zugang zur Wellenleiter QED präsentiert. Dieser Zugang basiert auf der Quantenfeldtheorie und ermöglicht die Berechnung Greenscher Funktionen im ein- und zwei-Anregungs Unterraum. Diese Greenschen Funktionen wurden benutzt um die Streumatrix und die spektrale Dichte in beiden Unterräumen zu berechnen. Desweiteren konnten wir mit Hilfe von Feynman-Diagrammen die physikalischen Prozesse in der Störungsreihe der Greenschen Funktionen identifizieren. Dies war besonders im zwei-Anregungs-Unterraum von Nutzen. In diesem Fall verhält sich das System nichtlinear, da das TLS nur eine Anregung absorbieren kann. Dadurch werden Effekte induziert wie photon bunching und die effiziente Anregung eines gebundenen Atom-Photon Zustandes. Es war uns möglich diese Effekte in der Störungsreihe der Greenschen Funktion wieder zu finden. Desweiteren haben wir die Greenschen Funktionen im Orts-Zeit-Raum benutzt um ein- und zwei-Photon-Wellenpakete zu propagieren. Es hat sich herausgestellt dass das Verhältnis von Pulsbreite zur spontanten Emissions-zeit sowohl das Streuverhalten als auch die maximale Anregung des TLS bestimmt. Letztendlich haben wir den Einfluss von Unordnung im Wellenleiter auf das Zerfallsverhalten des TLS untersucht. Wir haben entdeckt dass der gebundene Atom-Photon Zustand instabil wird sobald die Unordnung einen kritischen Wert erreicht. Darüberhinaus haben wir eine spezielle Klasse Feynman Diagramme identifiziert, die dem Zerfall eine nichtmarkovsche Dynamik verleihen. / Waveguide quantum electrodynamics (waveguide QED) can be considered as a building block for many prospective technologies like quantum computing. A prototypical system consists of a two-level system (TLS) coupled to a one-dimensional waveguide. The waveguide is characterized by its dispersion relation and can also feature a band edge/slow-light regime. In this thesis we have presented a new theoretical framework for waveguide QED, based on quantum field theory. The framework provides the Green''s functions of the system in the single- and two-excitation sectors for an arbitrary dispersion relation. We have calculated the scattering matrix and the spectral density in both sectors. Furthermore, we have also represented the Green''s functions in the form of Feynman diagrams, from which we can identify the underlying physical processes. A special property of the system is that it behaves nonlinear in the case of two or more photons. This is rooted in the structure of the TLS, which can at most absorb one excitation. The nonlinearity leads to two effects: photon bunching and the efficient excitation of an atom-photon bound state. We have found both effects within our framework and we were able to assign them individual terms in the perturbation series of the Green''s function. Furthermore, we have used the Green''s function in space-time domain to propagate Gaussian one- and two-photon wavepackets. Here, we have identified the ratio of the pulsewidth and the spontaneous emission time as the parameter which governs both the scattering behavior of the photons and the maximal TLS excitation. Eventually, we have investigated the effects of disorder in the waveguide on the decay properties of the TLS. We have found here that the atom-photon bound state is stable for small disorder, but breaks down at sufficiently strong disorder. Furthermore, we have identified a special class of diagrams which render the system non-Markovian even for energies far away from the band edge.

Made available in DSpace on 2016-04-27T16:33:24Z (GMT). No. of bitstreams: 1 Marieta Gouvea de Oliveira Penna.pdf: 1577975 bytes, checksum: 90f75a15c1de5b0315589887a7cd372c (MD5) Previous issue date: 2007-07-23 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / The theme of this research is the teachers educational exercise from the early education of elementary school in public schools of the state of São Paulo, from a sociological perspective. Based on Pierre Bourdieu s theory of the action, the teaching profession is understood as a social function, with the objective of analyzing the material conditions which the teachers are submitted to and their position in the space of the social relationships. For this reason, aspects related to the teachers social origin, trajectory and class belonging are analyzed, with the intention of detecting facets of the agents family habitus who have been dedicating themselves to the exercise of that function. We also analyze aspects of the conditions of the teachers work; of the cultural capital; of the relationships they establish with the knowledge in the exercise of the function; as well as of the practices accomplished by them which were explicited in their depositions, that constitute and are constituted by facets of the habitus related to the teaching profession in that part of the educational instruction that express the school culture historically instituted. Interviews were accomplished with ten teachers, two parents, four students, one coordinator and one principal; over questionnaires with 16 teachers. The research data evidenced that, for their origin, the majority of the teachers belong to the popular classes, but the educational exercise represented possibility of social ascension, positioning them in the middle classes. It was possible to realize existent regularities in the teachers' family habitus, concerning the valorization of the work and the educational instruction as strategy of social ascension, besides the submission of the women to the masculine universe, which join the practices accomplished by the teachers in the school, at the same time expressed in them. We could also verify the conditions of the teachers work related to the space of the social relationships, leading them to establish distinction strategies in relation to their students and the students family, expressed in their view of the world. The practices accomplished by the teachers and informed in their depositions were centered in the moralization and the children s training, expressing aspects of the school culture and the habitus related to the exercise of that function. We can stand out that the educational exercise, even being socially depreciated, facilitates the teachers to establish distinction strategies and bargain symbolic capital, besides meaning improvements in their life conditions in terms of cultural and economic capital / O tema desta pesquisa é o exercício docente de professores do ciclo I do ensino fundamental em escolas públicas do estado de São Paulo, a partir de perspectiva sociológica. Tendo por base a teoria da ação elaborada por Pierre Bourdieu, a docência é compreendida como função social, com o objetivo de analisar as condições materiais às quais os professores estão submetidos e a posição ocupada por eles no espaço das relações sociais. Para tanto, são analisados aspectos relacionados à origem social, trajetória e pertença de classe dos professores, com o intuito de detectar facetas do habitus familiar dos agentes que têm se dedicado ao exercício dessa função. São analisados também aspectos das condições de trabalho dos professores; do capital cultural; das relações que estabelecem com o conhecimento no exercício da função; bem como das práticas por eles realizadas e que foram relatadas em seus depoimentos, que constituem e são constituídos por facetas do habitus relacionado à docência nesse segmento da escolarização que, por sua vez, expressam a cultura escolar historicamente instituída. Foram realizadas entrevistas com dez professores e respondidos questionários por outros 16, além de entrevistas com dois pais, quatro alunos, um coordenador e um diretor. Os dados da pesquisa evidenciaram que por sua origem, a maioria dos professores pertence às camadas populares, mas que o exercício docente representou possibilidade de ascensão social, posicionando-os nas classes médias. Foi possível captar regularidades existentes no habitus familiar dos professores, no que diz respeito à valorização do trabalho e da escolarização como estratégia de ascensão social, além de submissão das mulheres ao universo masculino, que vão ao encontro de práticas realizadas pelos professores na escola, ao mesmo tempo em que nelas se expressam. Permitiu também verificar de que forma as condições de trabalho dos professores os posicionam no espaço das relações sociais, levandoos a estabelecer estratégias de distinção em relação a seus alunos e familiares destes, expressas em sua visão de mundo. As práticas realizadas pelos professores e informadas em seus depoimentos estavam centradas na moralização e disciplinarização das crianças, expressando aspectos da cultura escolar e do habitus relacionado ao exercício dessa função. Destaca-se que o exercício docente, mesmo desvalorizado socialmente, possibilita aos professores estabelecerem estratégias de distinção e amealharem capital simbólico, além de significar melhorias em suas condições de vida em termos de capital cultural e econômico