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The overall objective of this thesis is to assess the financial, technical and social feasibility of investing in modern Automated People Movers (APM) transportation systems, generally known as monorails, in METU campus which presents a unique opportunity to fulfill the modern-day transportation needs of METU campus. This study complements the Presidency Office&rsquo / s long term goal to integrate environmental, social and economic sustainability into the policies, practices and culture of the university and ultimately reduce the consumption of all resources on campus and traffic congestion and accidents. In this context, the consequent cost-benefit effects of the proposed monorail system on campus life were quantified in monetary expressions and the corresponding multi-criteria feasibility assessment including: Break-even Analysis, Cost Effectiveness Assessments and Cost Benefit Analysis have been done successfully. According to these analyses the overall capital cost of system is $46.5 million which covers the 24 months project construction period, and an additional annual operating and maintenance cost of $2 million will span the 30 year project life time. Three different scenarios were proposed for financing the project and relevant break-even points were determined for each of the scenarios. Eventually, it appears that based on the evaluations, constructing such a transit system in METU campus will be cost effective and will certainly enhance the transportation, and will contribute to the institutional improvements and environmental preservation schemes of METU campus.

nÃo hà / Os problemas de poluiÃÃo do ar se tornam cada vez mais crÃticos, necessitando de controles e monitoramentos contÃnuos, a fim de assegurar um ambiente adequado à comunidade em geral. O impacto das fontes de poluiÃÃo do ar existente ou de novas fontes pode ser avaliado, atravÃs de modelos matemÃticos ou modelos de qualidade do ar. Esta ferramenta permite avaliar os riscos (efeitos) dos poluentes atmosfÃricos ao meio ambiente sob diversas variÃveis, como condiÃÃes de estabilidade atmosfÃricas e pontos de lanÃamento. Neste contexto, a teoria Fuzzy desponta como uma soluÃÃo viÃvel para estudar o risco de falha de um sistema de controle de poluiÃÃo do ar a diferentes lanÃamentos, como a carga de poluente entre 200 a 300 kgd-1. Esta teoria, combinada com o princÃpio de transporte de massa tem permitido que campos de risco sejam determinados, podendo avaliar se os controles adotados sÃo confiÃveis. Este trabalho propÃe uma metodologia, baseado em uma modelagem matemÃtica dos processos de dispersÃo dos poluentes atmosfÃricos, onde os parÃmetros sÃo funÃÃes de pertinÃncia, definidas segundo a teoria Fuzzy. A pesquisa utiliza esses conceitos na soluÃÃo da equaÃÃo gaussiana âfuzzificadaâ, para determinar o risco de falha e a confiabilidade de minimizaÃÃo do lanÃamento de poluentes atmosfÃricos a diferentes concentraÃÃes para emissÃes contÃnuas e instantÃneas. Os resultados mostraram que a melhor condiÃÃo de estabilidade para dispersÃo dos poluentes à a instÃvel e o risco de falha do sistema nesta condiÃÃo à baixo, apresentam valores de concentraÃÃo dentro dos parÃmetros da legislaÃÃo pertinente, o qual nÃo causa impactos para o meio ambiente e nem para a comunidade no entorno. / Air pollution problems increasingly become more critical, requiring continuous monitoring and controls in order to ensure an appropriate environment for the community in general. The impact sources of air pollution from existing or new sources can be evaluated using mathematical models or models of air quality. This tool allows for evaluate the effects (risks) of air pollutants to the environment in several variables. In this context, the Fuzzy theory emerged as a viable solution to study the risk of failure of a system of air pollution different releases. This theory combined with the principle of mass transportation has allowed fields of risk are determined and can assess whether the controls adopted are reliable. This paper proposes a methodology based on a mathematical modeling of air dispersion process pollutants, where their parameters are membership functions, defined according for Fuzzy theory. The research uses these concepts in the solution of the equation Gaussian Fuzzy to determine the risk of failure and ensuring sustainability of the release of pollutants at different concentrations for continuous and instantaneous emissions. The results showed that the best conditions of stability for the dispersion of pollutants is unstable and the risk of system failure in this condition is zero, with concentration values within the parameters of the relevant legislation, without causing impacts on the environment the environment or to the community around.

The thesis deals with problem of urban mass transportation. Theoretical part is focused on mass transportation. The thesis contains delimination of area - Olomoucky Region - and its mass transportation - integrated transport system "IDSOK". The main part of the thesis deals with Urban Mass Transportation in Olomouc. There are analyzed selected problems of urban mass transportation as comfort, adherence to time tables, new tram traces routing - operating expenses of trams and buses - and communication with passengers.

From a fresh data science perspective, this thesis discusses the prediction of coronary artery disease based on Single-Nucleotide Polymorphisms (SNPs) from the Ontario Heart Genomics Study (OHGS). First, the thesis explains the k-Nearest Neighbour (k-NN) and Random Forest learning algorithms, and includes a complete proof that k-NN is universally consistent in finite dimensional normed vector spaces. Second, the thesis introduces two dimensionality reduction techniques: Random Projections and a new method termed Mass Transportation Distance (MTD) Feature Selection. Then, this thesis compares the performance of Random Projections with k-NN against MTD Feature Selection and Random Forest for predicting artery disease. Results demonstrate that MTD Feature Selection with Random Forest is superior to Random Projections and k-NN. Random Forest is able to obtain an accuracy of 0.6660 and an area under the ROC curve of 0.8562 on the OHGS dataset, when 3335 SNPs are selected by MTD Feature Selection for classification. This area is considerably better than the previous high score of 0.608 obtained by Davies et al. in 2010 on the same dataset.

Thesis (Master').

Made available in DSpace on 2014-06-11T19:30:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-05-14Bitstream added on 2014-06-13T20:00:55Z : No. of bitstreams: 1 melo_ga_dr_ilha.pdf: 5228605 bytes, checksum: 52731e96bb6ac0861b1e6187109bafa8 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Esta tese apresenta o desenvolvimento e os principais resultados para um retificador monofásico pré-regulador ”boost” para aplicação em sistema trólebus, possibilitando sua alimentação em corrente alternada (CA) ou em corrente contínua (CC), mantendose o sistema tradicional de distribuição da alimentação a dois fios. A estrutura proposta é composta por um retificador monofásico convencional, conectado a um conversor “boost” entrelaçado com cinco células, operando no modo de condução descontínua (MCD), reduzindo as perdas de comutação no diodo “boost”, interferências eletromagnéticas (EMI - electromagnetic interference) e propiciando o controle de forma simples, robusta e confiável para a estrutura. Além disso, devido às características das linhas de distribuição, a estrutura proposta pode atuar como conversor CA para CC ou CC para CC, fornecendo nível de tensão dentro da faixa adequada para o barramento CC. Quando alimentado pelo sistema em CA monofásico, o conversor propicia elevado fator de potência com reduzida distorção harmônica total de corrente (DHTi), atendendo plenamente às restrições da norma internacional IEC 61000-3-4. Adicionalmente, uma técnica de correção para a corrente de entrada, utilizando referência da tensão de entrada, é utilizada para garantir os baixos níveis de distorção harmônica, uma vez que a operação do pré-regulador retificador “boost” entrelaçado em MCD ocorre com reduzido ganho estático. Para a implementação do controle da regulação de tensão e correção da corrente de entrada, é empregado um dispositivo FPGA (field programmable gate array) utilizando linguagem de descrição de hardware (VHDL - verilog hardware description language). Utilizando o mesmo dispositivo FPGA, foi desenvolvido um controle de gerenciamento da operação, promovendo a comutação automática quando... / This thesis presents the development and experimental analysis of a special input stage converter for a Trolleybus type vehicle allowing its operation in AC (two wires, singlephase) or DC distribution networks. The proposed input stage architecture is composed by a conventional single-phase rectifier connected with a five interleaved boost rectifiers operating in discontinuous conduction mode (DCM), avoiding commutation boost diode losses, electromagnetic interference (EMI) and promoting simple control actions, robustness and reliability for the structure. Furthermore, due to the power lines characteristics, the proposed input power structure can act as AC to DC or as DC to DC converter providing a proper DC output voltage range required to the DC bus. When operating as AC to DC, the converter is capable to provide high power factor with reduced input current harmonic distortion, complying with the imposed restrictions by IEC 61000-3-4 standard. In addition, a special input current correction technique, using input voltage reference, is employed in order to achieve low harmonic distortions considering operation with low voltage static gain for the DCM interleaved boost rectifier pre-regulator. For implementation of the output voltage control and input current correction was used a field programmable gate array (FPGA) device with verilog hardware description language (VHDL). In addition using the same FPGA device, a management control system was implemented, promoting the required automatic operation changes when the vehicle is commuted from the DC power supply to the AC power supply and viceversa, keeping the original electrical DC bus characteristics for the trolleybus. After a brief review, a development work process is presented, containing the design methodology with all needed mathematical expressions, simulations, control circuits, as well as a 3D Computer-Aided Designs... (Complete abstract click electronic access below)

Orientador: Carlos Alberto Canesin / Banca: Falcondes Jose Mendes de Seixas / Banca: Dionizio Paschoareli Junior / Banca: Luiz Carlos de Freitas / Banca: João Batista Vieira Junior / Resumo: Esta tese apresenta o desenvolvimento e os principais resultados para um retificador monofásico pré-regulador "boost" para aplicação em sistema trólebus, possibilitando sua alimentação em corrente alternada (CA) ou em corrente contínua (CC), mantendose o sistema tradicional de distribuição da alimentação a dois fios. A estrutura proposta é composta por um retificador monofásico convencional, conectado a um conversor "boost" entrelaçado com cinco células, operando no modo de condução descontínua (MCD), reduzindo as perdas de comutação no diodo "boost", interferências eletromagnéticas (EMI - electromagnetic interference) e propiciando o controle de forma simples, robusta e confiável para a estrutura. Além disso, devido às características das linhas de distribuição, a estrutura proposta pode atuar como conversor CA para CC ou CC para CC, fornecendo nível de tensão dentro da faixa adequada para o barramento CC. Quando alimentado pelo sistema em CA monofásico, o conversor propicia elevado fator de potência com reduzida distorção harmônica total de corrente (DHTi), atendendo plenamente às restrições da norma internacional IEC 61000-3-4. Adicionalmente, uma técnica de correção para a corrente de entrada, utilizando referência da tensão de entrada, é utilizada para garantir os baixos níveis de distorção harmônica, uma vez que a operação do pré-regulador retificador "boost" entrelaçado em MCD ocorre com reduzido ganho estático. Para a implementação do controle da regulação de tensão e correção da corrente de entrada, é empregado um dispositivo FPGA (field programmable gate array) utilizando linguagem de descrição de hardware (VHDL - verilog hardware description language). Utilizando o mesmo dispositivo FPGA, foi desenvolvido um controle de gerenciamento da operação, promovendo a comutação automática quando... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This thesis presents the development and experimental analysis of a special input stage converter for a Trolleybus type vehicle allowing its operation in AC (two wires, singlephase) or DC distribution networks. The proposed input stage architecture is composed by a conventional single-phase rectifier connected with a five interleaved boost rectifiers operating in discontinuous conduction mode (DCM), avoiding commutation boost diode losses, electromagnetic interference (EMI) and promoting simple control actions, robustness and reliability for the structure. Furthermore, due to the power lines characteristics, the proposed input power structure can act as AC to DC or as DC to DC converter providing a proper DC output voltage range required to the DC bus. When operating as AC to DC, the converter is capable to provide high power factor with reduced input current harmonic distortion, complying with the imposed restrictions by IEC 61000-3-4 standard. In addition, a special input current correction technique, using input voltage reference, is employed in order to achieve low harmonic distortions considering operation with low voltage static gain for the DCM interleaved boost rectifier pre-regulator. For implementation of the output voltage control and input current correction was used a field programmable gate array (FPGA) device with verilog hardware description language (VHDL). In addition using the same FPGA device, a management control system was implemented, promoting the required automatic operation changes when the vehicle is commuted from the DC power supply to the AC power supply and viceversa, keeping the original electrical DC bus characteristics for the trolleybus. After a brief review, a development work process is presented, containing the design methodology with all needed mathematical expressions, simulations, control circuits, as well as a 3D Computer-Aided Designs... (Complete abstract click electronic access below) / Doutor

From a fresh data science perspective, this thesis discusses the prediction of coronary artery disease based on Single-Nucleotide Polymorphisms (SNPs) from the Ontario Heart Genomics Study (OHGS). First, the thesis explains the k-Nearest Neighbour (k-NN) and Random Forest learning algorithms, and includes a complete proof that k-NN is universally consistent in finite dimensional normed vector spaces. Second, the thesis introduces two dimensionality reduction techniques: Random Projections and a new method termed Mass Transportation Distance (MTD) Feature Selection. Then, this thesis compares the performance of Random Projections with k-NN against MTD Feature Selection and Random Forest for predicting artery disease. Results demonstrate that MTD Feature Selection with Random Forest is superior to Random Projections and k-NN. Random Forest is able to obtain an accuracy of 0.6660 and an area under the ROC curve of 0.8562 on the OHGS dataset, when 3335 SNPs are selected by MTD Feature Selection for classification. This area is considerably better than the previous high score of 0.608 obtained by Davies et al. in 2010 on the same dataset.