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The research thesis is based on the study of Kaohsiung MRT Orange Line. On condition that bilateral power is supplied during the target year, make two-minute interval as the background simulation, and use MATLAB & Simulink software for analysis tools. Through the establishment of the equivalent in the stray current model, discuss the original ground construction of Kaohsiung MRT Orange Line, and change the resistance of the track structure, in order to analyze whether that affects stray currents. Besides, simulate the maximum stray current density and its length in each station. To study cathode corrosion of underground metal pipeline due to stray current, the equivalent circuit model is applied for computer simulation. By changing the distance between the underground metal pipelines and MRT rail tracks the voltage potential of the pipe lines introduced by the stray current of MRT system is derived. The mitigation strategy of cathode corrosion due to stray current is also proposed in the thesis.

Over the past decades, stray dogs have become serious problems to the environment and society in Taiwan. Dogs wandering on the streets are potential threats to the safety of the public, and their droppings make the sanitation appalling. Stray dogs have strong reproductive capacity, and the population is still rising. However, shall we keep them in captivity and give them euthanasia ? And, are there other solutions ? Opinions differ on many issues. Based on what administrations had done with stray dogs in Taiwan and especially the case in Kaohsiung city , the thesis attempts to provide answers to disputed issues on stray dogs and some possible administrative measures.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 2000. / Includes bibliographical references.

This thesis is to investigate the power quality problems for KMRT system and to derive the optimal strategy to mitigate the harmonic distortion. The mathematical models of dc network which includes the TSS, 3rd track and VVVF Converters will be derived. Based on the power system network configuration, the operation schedule and annual ridership of KMRT system, the ac/dc load flow analysis is executed to find the power demand and current harmonic components for each TSS and each BSS. The harmonic load flow analysis is then performed to solve the voltage harmonic distortion. The optimal planning of harmonic filters will be derived so that the proper locations and years for the harmonic filters to be committed can be determined. The active filters and high pass filters as well as the band pass filters are all considered in the study to achieve the best cost effective for harmonic filter investment. This thesis will also to analyze in the stray current for mass transit system the mathematical models of TSS rectification stations, 3rd rail, running rail, the insulation resistances between running rail, MRT structure and grounding are included in the computer simulation. The variation of stray current for the peak and off peak operation of KMRT system over each study year is derived. The sensitivity analysis of stray current with respect to the insulation level of running rail is executed . The nearby public pipes of the MRT network will be used for the analysis of cathode corrosion due to the stray current. Different strategies to mitigate the stray current are investigated.

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O ProMAC surgiu dentro da USP como resposta à demanda da comunidade, de abordar alguns problemas ambientais, inclusive a presença de cães errantes no campus. O presente trabalho teve como objetivo atender este programa no tocante à avaliação da dinâmica e da saúde da população de cães mantidos soltos na CUASO e dos cães recolhidos ao ATA. Utilizando a técnica de captura e recaptura fotográfica, a população de cães foi estimada em nove oportunidades ao longo de dois anos. No segundo ano, os cães dóceis foram individualmente identificados e, em quatro oportunidades, tiveram amostras biológicas coletadas (sangue, fezes e ectoparasitos). Os cães alojados no ATA foram identificados e as amostras coletadas em um único esforço contínuo ao longo de três meses. A estimativa da população errante variou entre 14 e 55 cães, com tendencia de queda não significativa ao longo do tempo. A população foi, em sua maioria composta de indivíduos machos (58,4%), adultos (77,8%) e dóceis (55,7%). A população errante apresentou alterações nos parâmetros hematológicos ao longo do ano, compatíveis com infecção subclínica, possivelmente causada por Hepatozoon canis, que teve aumento significativo de sua prevalência. Todos os cães foram negativos para Leishmania sp., Ricketsia sp., Erlichia sp. Não houve diferença significativa tanto para a SAM (Leptospira sp.,entre 14 e 50% - CUASO e 52,4% - ATA) quanto para a eliminação de ovos de Ancylostoma sp. nas fezes (entre 21 e 55% - CUASO e 27% - ATA) entre os cães da CUASO e do ATA, sendo o risco de infecção na comunidade universitária considerado baixo. A análise ambiental permitiu estabelecer que a fonte principal de alimento dos cães é a mesma dos humanos, fornecida próximo aos pontos de venda de alimentos, o que se torna preocupante ao sabermos que mais da metade destes cães são positivos para Toxoplasma sp. (entre 54 e 60%), sendo indicadores do risco ao ser humano. Os cães da população aversiva apresentam sinais reprodutivos (8,7% das fêmeas ao ano), mas os filhotes não foram encontrados possivelmente devido à baixa sobrevivência. Os adultos, tanto da população dócil como da população aversiva possuiam boa condição corporal, baixa mortalidade, sendo que os dóceis deixaram o campus mais frequentemente devido à adoção. O conjunto dos dados indicaram que o status sanitário dos cães alojados no abrigo foi semelhante àquela dos cães soltos, sendo que o bem-estar destes últimos foi maior, devido à condição precária em que o ATA era mantido, com a capacidade de alojamento de cães acima do limite máximo do abrigo. Como os cães da CUASO se distribuiam modulados pelo fornecimento de alimento e abrigo pelos usuários do campus, o manejo adequado destes cães deveria incluir o envolvimento da comunidade, além de sua responsabilização. A reprodução dos cães aversivos precisa ser eliminada, buscando métodos alternativos, devido à dificuldade de captura destes cães. O uso da área de mata destinada a pesquisa por estes cães representa um risco sanitário à comunidade universitária. / The ProMAC emerged within the University of São Paulo in response to a community demand, to address environmental problems, including the presence of stray dogs in its campus. This study aimed to address this program regarding the dynamics and health of the population of stray dogs in the campus and the dogs kept in the campus shelter. Using the technique of photographic mark and recapture, the dog population was estimated in nine occasions in a two years period. In the second year the docile dogs were individually identified and, on four occasions, had biological samples collected (blood, feces and ectoparasites). Dogs housed in the shelter were identified and biological samples were collected in a single effort over three months. The population estimates varied between 14 and 55 dogs, with a non-significant decrease trend over time. The population was mostly composed of males (58.4%), adults (77.8%) and docile individuals (55.7%). The stray population showed changes in hematological parameters throughout the year, consistent with subclinical infection, possibly caused by Hepatozoon canis, which had a significant increase in its prevalence. All dogs were negative for Leishmania sp., Rickettsia sp., Ehrlichia sp. There was no significant difference between either the MAT (Leptospira sp, between 14 and 50% -. campus and 52.4% - shelter) or the elimination of Ancylostoma sp. eggs in feces (between 21 and 55% - campus and 27% - shelter), between dogs from campus and shelter, and the risk of infection in the university community was considered low. Environmental analysis established that the stray dogs main food source are the human food given to them close to food selling points, which is a concern given that more than half of these dogs are positive for Toxoplasma sp. (from 54 to 60%) and would be risk indicators to humans. The aversive stray dogspopulation showed reproductive signs (8.7% of females per year), but the puppies were not found possibly due to low survival rate. Adults, both from docile and the aversive population, had good body condition, low mortality and the docile dogs left the campus more often due to adoption. The data indicated that the health of dogs housed in the shelter were similar to the stray population, and the welfare of the latter is higher due to the precarious condition that the shelter was maintained and the number of dogs kept being over the maximum capacity. As stray dogs were distributed and maintained by the food and shelter supplied by the campus users, the proper management of these dogs would include community involvement and responsibility. The reproduction of aversive dogs must be eliminated, seeking alternative methods, because of the difficulty of catching these dogs. Use of research forest area by these dogs poses a risk to the university community.

This thesis investigates stray losses in AC machines using the time-stepped finite element technique. Two aspects of this topic are involved in this thesis. The first aspect is to construct a finite element model for AC machine systems and develop an efficient numerical solution for the system equation; as the emphasis of this thesis, the second aspect is use the above model to analyze stray losses in AC machines under a variety of operation, design and manufacturing conditions. The thesis modifies the traditional 2-D finite element technique to account for the variations in electromagnetic field along the machines axis resulting from skewed structures, rotor interbar currents and ventilation ducts. Domain decomposition and parallel computation are incorporated to efficiently give a numerical solution to the system equation. The factors affecting harmonic stray losses in AC machines including pulse width modulation (PWM) supply, interbar resistance and slot shape are investigated using the above efficient analysis tool. Simulations and tests under different load conditions are carried out for an induction motor to investigate the additional harmonic stray loss caused by the PWM supply. For a large synchronous generator, simulations and tests are performed to study the effect of different amortisseur interbar resistances on the slot harmonic contents and the resulting harmonic stray loss in the amorisseur cage. As a factor influential to magnet stray loss in permanent magnet synchronous machines, various slot shape designs are assessed by simulations. An optimization based on an evolutionary strategy is implemented to find the best slot shape design with minimum machine loss. The conclusions in the thesis provide valued information to direct the future design and manufacture of efficient AC machines. / Power Engineering and Power Electronics

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Magistrantūros darbo „Kitoks“ teorinėje dalyje nagrinėjama „kitokio“ žmogaus egzistencija šiuolaikinėje vartotojiškoje visuomenėje. Analizuojant „kitokio“ žmogaus egzistencializmą šiuolaikinėje postmodernioje visuomenėje, rėmiausi sociologų, kaip Z. Baumano, J. Ruškaus, V. Gudžinskienės, Ž. Jurgutienės, E. Kocai sociologiniais tyrinėjimais šiuo klausimu. Darbo aktualumas – „kitokio“ žmogaus tema buvo aktuali visais laikais. Ypatingai aktuali šio postmodernaus amžiaus visuomenėje, kai atsirado didelis žmonių pasiskirstymas luomine klasifikacija. Darbo temos problematika padeda atskleisti „kitokio“ žmogaus egzistencializmą, su savo baimėmis, nepilnaverčio žmogaus kompleksais, išgyvenant vidinius ir išorinius tapatybės bei būties klausimus. / Master's work in 'Other' theoretical part the "other" human existence in modern consumer society. Theanalysis of "the other" humanexistentialism in contemporary post-modern society, I quoted sociologists as Ruškaus S, Gudžinskienės V., Jurgutienės Z. , Kocai E. sociological exploration of this issue. Relevance of the work - "other" human subject was relevant at all times. Especially relevant in this post-modern age of society, when there were people in the distribution of high caste classification. Topics of the problem helps to reveal the "other" human existentialism, with its fears, complexes of a disabled person, experiencing internal and external questions of existence and identity. The aim - through social literature to analyze the "other" human being, his position in modern society. Try to reveal a portrait of a visual depiction. The painting collection "Other" examines the problem - homeless existence in modern consumer society.