Made available in DSpace on 2015-03-03T13:59:43Z (GMT). No. of bitstreams: 1 AdrianoAF_DISSERT_Partes autorizadas.pdf: 796501 bytes, checksum: b497ad360ae56f4ffd7513551ad54ad6 (MD5) Previous issue date: 2010-06-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The complexity of the Phenomenon of fluid flow in porous way causes a difficulty in its explicit description. Different in the cases where the flow is given through a pipe, where it is possible to measure the length and diameter of the pipe and to determine their ability to flow as a function of pressure, which is a complicated task in porous way. However, we try to approach clearly the equations used to conjecture the behavior of fluid flow in porous way. We made use of the Gambit to create a fractal geometry with the fluent we give the contour?s conditions we would want to analyze the data. The triangular mesh was created; it makes interactions with the discs of different rays, as barriers putted in the geometry. This work presents the results of a simulation with a flow of viscous fluids (oilliquid). The oil flows in a porous way constructed in 2D. The behavior evaluation of the fluid flow inside the porous way was realized with graphics, images and numerical results used for different datas analysis. The study was aimed in relation at the behavior of permeability (k) for different fractal dimensions. Taking into account the preservation of porosity and increasing the fractal distribution of the discs. The results showed that k decreases when we increase the numbers of discs, although the porosity is the same for all generations of the first simulation, in other words, the permeability decreases when we increase the fractality. Well, there are strong turbulence in the flow each time we increase the number of discs and this hinders the passage of the same to the exit. These results permitted to put in evidence how the permeability (k) is affected in a porous way with obstacles distributed in a diversified form. We also note that k decreases when we increase the pressure variation (P) within geometry. So, in front of the results and the absence of bibliographic subsidies about other theories, the work realized here can possibly by considered the unpublished form to explain and reflect on how the permeability is changed when increasing the fractal dimension in a porous way / A complexidade do fen?meno do fluxo de um fluido em meios porosos causa uma dificuldade em sua descri??o expl?cita. Diferente nos casos em que o fluxo se dar atrav?s de uma tubula??o, onde ? poss?vel medir o comprimento e di?metro da tubula??o, bem como determinar sua capacidade de escoamento em fun??o da press?o, a qual ? uma tarefa complicada em meios porosos. Todavia, tentamos aborda de maneira clara as equa??es utilizadas para conjeturar o comportamento do fluxo de fluido no meio poroso. Fizemos uso do Gambit para criar uma geometria fractal e com o Fluent demos as condi??es de contornos desejadas para analisar os dados. A malha criada foi triangular, ela faz intera??es com os discos, de raios diferentes, colocados como obst?culos na geometria. Este trabalho apresenta os resultados de uma simula??o com fluxo de fluidos viscosos (?leo-l?quido). O ?leo flui em um meios porosos constru?do em 2D. A avalia??o do comportamento do escoamento do fluido no interior do meio poroso foi realizada com gr?ficos, imagens e resultados num?ricos utilizados para diferentes an?lises de dados. O estudo desenvolvido foi visando o comportamento da permeabilidade (k) em rela??o a diferentes dimens?es Fractais. Levando em conta a conserva??o da porosidade e o aumento da Fractalidade com a distribui??o dos discos. Os resultados mostraram que k diminui quando aumentamos os n?meros dos discos, apesar de que a porosidade ? a mesma para todas as gera??es da primeira simula??o, ou seja, a permeabilidade diminui quando aumentamos a fractalidade. Pois, existem fortes turbul?ncias no fluxo cada vez que aumentamos a quantidade dos discos e isso dificulta a passagem do mesmo para a sa?da. Estes resultados permitiram por em evid?ncia o qu?o a permeabilidade (k) ? afetada em um meio poroso com obst?culos distribu?dos de maneira diversificada. Verificamos tamb?m que k decresce quando aumentamos a varia??o da press?o ( P) no interior da geometria. Portanto, diante dos resultados e da aus?ncia de subs?dios bibliogr?ficos sobre outras teorias, o trabalho aqui realizado pode ser considerado possivelmente uma forma in?dita de se explicar e refletir como a permeabilidade ? modificada quando aumentamos a dimens?o fractal em um meio poroso

Este estudo é sobre a relação entre administração e política. Trata-se de uma tese teórica que, além de compilar o debate no cenário internacional e nacional, pretende avançar nas discussões a respeito. Apoia-se, principalmente, no referencial teórico da administração pública e da ciência política, desenvolvido a partir da contribuição decisiva dos textos clássicos de Woodrow Wilson (The Study of Administration), Frank Goodnow (Politics and Administration: a study in government) e Max Weber (Parlamento e Governo na Alemanha Reordenada: crítica política do funcionalismo e da natureza dos partidos e, Política como Vocação). Apoia-se também em estudos contemporâneos que, a partir dos referidos clássicos, seguiram o debate percorrendo três caminhos distintos. O primeiro pela via da dicotomia política-administração que retrata política e administração como fenômenos distintos e separados. O segundo pela via da complementaridade que propõe uma visão integradora entre política e administração, considerando que as práticas administrativas são fundamentalmente fenômenos políticos. O terceiro pela via da afirmação direta de que administração é política. Na esteira desse terceiro caminho, esta tese é uma afirmativa de que a administração é política, mas assim o é em seu próprio “espaço existencial”. Então, a partir das especulações sobre “modos de vida”, a administração é situada naquele modo de vida que lhe é próprio, qual seja, o modo de vida prática ou modo de vida produtiva. É neste “espaço existencial” que a administração é política, portanto, a referida relação deve ser pensada considerando a preservação não apenas deste espaço, mas daquele que é próprio da política “por excelência”. Para assim pensar a natureza política da administração, recupera-se a ideia de “bom governo” de Hannah Arendt, cuja abordagem permite compreender o lugar da administração na vida política. / This study is about the relationship between administration and politics. It is a theoretical thesis that, in addition to compiling the debate on the international and national scene, intends to advance in the discussions about it. It is based mainly on the theoretical reference of public administration and political science, developed from the decisive contribution of the classic texts of Woodrow Wilson (The Study of Administration), Frank Goodnow (Politics and Administration: a study in government) and Max Weber (Parliament and Government in Reordered Germany: political critique of functionalism and the nature of parties and, Politics as Vocation). It is also supported by contemporary studies that, following these classic authors, continued the debate in three different roads. The first is via the politicsadministration dichotomy that portrays politics and administration as distinct and separate phenomena. The second, through complementarity, proposes an integrative vision between politics and administration, considering that administrative practices are fundamentally political phenomena. The third is by way of direct assertion that administration is politics. Following this third road, this thesis assert that the administration is politics, but so it is in its own “existential space”. Thus, from the speculations on “ways of life”, the administration is situated in that way of life that is its own, that is, the practical way of life or productive way of life. It is in this “existential space” that administration is politics, therefore, the said relation must be thought considering the preservation not only of this space, but of that which is proper to politics “par excellence”. To think about the political nature of the administration, the idea of “good government” of Hannah Arendt is recovered, whose approach allows the understanding of the place of the administration in the political life.

A dissertação “A proposta de Educação para o Empreendedorismo do Instituto Empreender Endeavor: um estudo sobre parceria público-privada apresenta como temática central a relação público-privada na educação e tem como objetivo geral analisar o conteúdo da proposta de educação que fundamenta os cursos de empreendedorismo do Instituto Empreender Endeavor, promovidos em parceria com instituições públicas de educação no Brasil. Quanto à metodologia utilizada para realizar a pesquisa, o materialismo histórico representa o referencial teóricometodológico, sendo a análise documental a principal ferramenta, a partir do trabalho com fontes primárias e secundárias. O marco teórico da presente pesquisa parte das crises do capitalismo de 1970 e 2008 e o decorrente processo de reestruturação do sistema, o qual apresenta o Neoliberalismo, a Reestruturação Produtiva, a Globalização e a Terceira Via como estratégias para superação deste quadro. No plano políticoideológico, tanto o Neoliberalismo quanto a Terceira Via apresentam a reforma do Estado baseada na lógica mercantil como padrão de qualidade, o que tem possibilitado o crescimento da influência dos setores privados na direção e execução das políticas públicas, em especial no campo social, como a educação, que é o foco deste estudo. Contudo, a proposta neoliberal consiste no amplo processo de privatização, já a Terceira Via privilegia como elemento central a atuação das organizações ligadas ao Terceiro Setor. Constituintes deste processo, a Reestruturação Produtiva legitimou formas de organização do trabalho que atendessem aos interesses do capital em crise, com destaque para o Empreendedorismo, e a Globalização potencializou a expansão do capitalismo reestruturado através das Redes. Desta forma, a redefinição das fronteiras entre o público e o privado tem influenciado no conteúdo da educação pública, pois as Redes de Empreendedores Sociais ligadas ao Terceiro Setor, como é o caso do Instituto Empreender Endeavor, que estabelecem parcerias com instituições públicas de educação, definem o conteúdo educacional ofertado à população. A influência exercida por estas instituições privadas junto ao campo público da educação constitui-se como o problema deste estudo, o que sugere o seguinte questionamento: poderá o conteúdo da educação proposto pelo Instituto Empreender Endeavor, através de cursos de empreendedorismo oferecidos em parceria com instituições públicas de educação, ter implicações para a Democratização da Educação? No desenvolvimento da pesquisa verificou-se que o empreendedorismo dialoga com todas as estratégias características do processo de reestruturação do capitalismo, contribuindo para assegurar a hegemonia e conseqüente reprodução do sistema. Isto é, sua proposta articula, ao mesmo tempo, o apassivamento dos sujeitos que, diante do contexto de crise econômica e social, passam a buscar individualmente as competências demandadas pelo mercado e assumem os riscos de empreender seu próprio negócio para garantir a sobrevivência. Nesse sentido, conclui-se que os cursos de empreendedorismo do Instituto Empreender Endeavor promovidos em parceria com instituições públicas da educação brasileira contribuem para a deteriorização dos princípios de uma educação democrática, proporcionando um único caminho, a adaptação dos sujeitos às demandas do mercado capitalista, através da incorporação de competências socioemocionais para empreender seu próprio negócio, uma realidade que, para a maioria dos empreendedores brasileiros, significa precarização das condições de vida. / The dissertation "The Entrepreneurial Education Project of the Empreender Endeavor Institute: a study on public-private partnership presents as central theme the publicprivate relationship in education and its general objective is to analyze the content of the education proposal that bases the courses of entrepreneurship of Instituto Empreender Endeavor, promoted in partnership with public education institutions in Brazil. As for the methodology used to carry out the research, historical materialism represents the theoretical-methodological reference, and documentary analysis is the main tool, based on the work with primary and secondary sources. The theoretical framework of the present research starts from the crises of capitalism of 1970 and 2008 and the resulting process of restructuring the system, which presents Neoliberalism, Productive Restructuring, Globalization and the Third Way as strategies to overcome this framework. At the political-ideological level, both Neoliberalism and the Third Way present the reform of the State based on the mercantile logic as a quality standard, which has allowed the growth of the influence of the private sectors in the direction and execution of public policies, especially in the field social, such as education, which is the focus of this study. However, the neoliberal proposal consists of the broad process of privatization, since the Third Way privileges as a central element the performance of organizations related to the Third Sector. Constituents of this process, Productive Restructuring legitimized forms of work organization that served the interests of capital in crisis, with emphasis on Entrepreneurship, and Globalization enhanced the expansion of restructured capitalism through Networks. In this way, the redefinition of publicprivate boundaries has influenced the content of public education, since the Network of Social Entrepreneurs linked to the Third Sector, such as Instituto Empreender Endeavor, which establishes partnerships with public institutions of education, define the educational content offered to the population. The influence exerted by these private institutions in the public field of education constitutes the problem of this study, which suggests the following question: can the content of the education proposed by the Instituto Empreender Endeavor, through entrepreneurship courses offered in partnership with institutions education, have implications for the democratization of education? In the development of the research it was verified that entrepreneurship dialogues with all the characteristic strategies of the process of capitalist restructuring, contributing to ensure hegemony and consequent reproduction of the system. That is to say, its proposal articulates, at the same time, the apassivamento of the individuals who, faced with the context of economic and social crisis, begin to individually seek the competences demanded by the market and assume the risks of starting their own business to guarantee their survival. In this sense, it is concluded that the entrepreneurship courses of the Instituto Empreender Endeavor promoted in partnership with public institutions of Brazilian education contribute to the deterioration of the principles of a democratic education, providing a single path, the adaptation of the subjects to the demands of the capitalist market, through the incorporation of socio-emotional competences to undertake their own business, a reality that, for most Brazilian entrepreneurs, means the precariousness of living conditions.

O tema desta dissertação é o estudo das interações entre os sujeitos sociais e as políticas públicas, tendo como referência empírica os agricultores familiares tradicionais e sua apropriação do Plano Brasil Sem Miséria (PBSM). O principal objetivo foi compreender a relação entre as distintas racionalidades e os modos de vida ou experiências de agricultores tradicionais e o Plano Brasil Sem Miséria – Projeto Fomento. Para tanto foram investigadas a formação histórica dos agricultores tradicionais no Brasil e no Rio Grande do Sul e a trajetória das políticas públicas e sociais brasileiras a partir da década de 1990. Optou-se pelo método qualitativo e os instrumentos de coleta de dados primários foram entrevistas semi-estruturadas, individuais e coletivas e como fontes secundárias, documentos e obras publicadas sobre os municípios pesquisados. A pesquisa foi realizada nos municípios de Dom Feliciano, Itati e Lajeado do Bugre, Rio Grande do Sul, Brasil. As entrevistas foram realizadas com famílias beneficiárias do Plano Brasil Sem Miséria e técnicos da Emater/RS. Para o desenvolvimento deste estudo mobilizou-se os conceitos de racionalidade e modos de vida. Observou-se que produção para o autoconsumo ocupa lugar privilegiado na racionalidade dos agricultores tradicionais. A política pública foi adaptada pelos agricultores readequando-a a suas expectativas e demandas imediatas, não necessariamente geradoras de transformação de seu modo de vida e da sociedade em que vivem. Os agricultores elaboram estratégias de apropriação da política orientados pela racionalidade do risco mínimo, tendo como objetivo o fortalecimento do seu modo de vida. Os resultados indicam que as condutas e os comportamentos dos agricultores podem estar associados a opção por um modo vida com características mais próximas às tradicionais. / The theme of this dissertation is the study of the interactions between social subjects and public policies, having as an empirical reference the traditional family farmers and their appropriation of the Brazil Without Poverty Plan (PBSM). The main objective was to understand the relationship between the different rationalities and the ways of life or experiences of traditional family farmers and the Brazil Without Poverty Plan – Fomento Project. For this, has been investigated the historical formation of traditional farmers in Brazil and Rio Grande do Sul and the trajectory of Brazilian public and social policies from the 1990s. The qualitative method was chosen and the primary data collection instruments were interviews semi-structured, individual and collective, and as secondary dataset, documents and published works about the municipalities surveyed. The research was carried out in the municipalities of Dom Feliciano, Itati and Lajeado do Bugre, Rio Grande do Sul, Brazil. The interviews were carried out with beneficiary families of the Brazil Without Poverty Plan and Emater/RS technicians. For the development of this study the concepts of rationality and ways of life were mobilized. It was observed that production for self-consumption occupies a privileged place in the rationality of traditional farmers. Public policy has been adapted by farmers by adapting it to their expectations and immediate demands, not necessarily generating a transformation of their way of life and the society in which they live. Farmers develop strategies of policy appropriation guided by the rationality of minimum risk, with the aim of strengthening their way of life. The results indicate that farmers' behaviors and behaviors may be associated with the option of a life mode with characteristics closer to traditional ones.

In the work are analyzed the most important differences in plant production as well as in single system of farming. There is determined their effect on variability costs in farming. The work evaluates differences between yields of selected commodities with respect to system of farming and factors, which can the results change. There are the variability costs on the area and a value of rent ability determined with regard to standard farming technologies in every farming system. The profit on area is demonstrated in reference to redemption price of the year. The study is concerned with SWOT analysis of integrate way of farming. There are determinate the strong and weak sides in plant farming, able occasions and threats. The strategies to the future are discussed. The aim of this work is the comparison of economic effectiveness of selected commodities in different agriculture systems. It is concentrated first of all on evaluation of differences between yields of commodities in confrontation to system of farming and factors changing the yields. Secondly, the high and the structure of variability costs to production of selected commodities, the price differences between conventional and organic farming and the evaluation of economic effectiveness selected commodities is studied.

abstract: Both two-way relays (TWR) and full-duplex (FD) radios are spectrally efficient, and their integration shows great potential to further improve the spectral efficiency, which offers a solution to the fifth generation wireless systems. High quality channel state information (CSI) are the key components for the implementation and the performance of the FD TWR system, making channel estimation in FD TWRs crucial. The impact of channel estimation on spectral efficiency in half-duplex multiple-input-multiple-output (MIMO) TWR systems is investigated. The trade-off between training and data energy is proposed. In the case that two sources are symmetric in power and number of antennas, a closed-form for the optimal ratio of data energy to total energy is derived. It can be shown that the achievable rate is a monotonically increasing function of the data length. The asymmetric case is discussed as well. Efficient and accurate training schemes for FD TWRs are essential for profiting from the inherent spectrally efficient structures of both FD and TWRs. A novel one-block training scheme with a maximum likelihood (ML) estimator is proposed to estimate the channels between the nodes and the residual self-interference (RSI) channel simultaneously. Baseline training schemes are also considered to compare with the one-block scheme. The Cramer-Rao bounds (CRBs) of the training schemes are derived and analyzed by using the asymptotic properties of Toeplitz matrices. The benefit of estimating the RSI channel is shown analytically in terms of Fisher information. To obtain fundamental and analytic results of how the RSI affects the spectral efficiency, one-way FD relay systems are studied. Optimal training design and ML channel estimation are proposed to estimate the RSI channel. The CRBs are derived and analyzed in closed-form so that the optimal training sequence can be found via minimizing the CRB. Extensions of the training scheme to frequency-selective channels and multiple relays are also presented. Simultaneously sensing and transmission in an FD cognitive radio system with MIMO is considered. The trade-off between the transmission rate and the detection accuracy is characterized by the sum-rate of the primary and the secondary users. Different beamforming and combining schemes are proposed and compared. / Dissertation/Thesis / Doctoral Dissertation Electrical Engineering 2018

Radio networks are expanding, becoming more advanced, and pushing the limits of what is possible. Services utilizing the radio networks are also being developed in order to provide new functionality to end-users worldwide. When discussing 5G radio networks, concepts such as driverless vehicles, drones and near zero communication delay are recurrent. However, measures of delay are needed in order to verify that such services can be provided -- and measuring this is an extensive task. Ericsson has developed a platform for simulating a radio environment surrounding a radio base station. Using this simulator, this project involved measuring one-way packet delay in a radio network, and performing a Quality of Service evaluation of a radio network with a number of network applications in concern. Application data corresponding to video streams, or Voice over IP conversations, were simulated and packet delay measurements were used to calculate and evaluate the Quality of Service provided by a radio network. One of the main conclusions of this project was that packet delay variations are asymmetric in uplink, which suggests usage of non-conventional jitter measurement techniques.

The Internet of Things (IoT) is rapidly gaining ground in our daily life. There is a trend that the number of devices and data increases rapidly in the future. Meanwhile, IoT platforms are emerging to enable people conveniently deal with the IoT and these huge amount of data and devices. Therefore, the goal in this paper is to perform a quantitative evaluation on Microsoft Azure, one of the IoT platform, about its advantages and disadvantages under press to determine if Azure IoT is fit for future IoT. In order to reach this goal, Azure IoT Hub is used as a bridge to connect and manage lots of IoT devices which send and receive huge amount of data. .NET is used to simulate devices and connect them to the IoT Hub. The two-way communication from sensor to cloud and from cloud to actuator is implemented through MQTT protocol. This paper makes measurements on three metrics including response time from sensor sending messages to actuator receiving messages, scalability and cost and analyzes them in detail. Besides, the analysis is also made in a specific scenario which has high demand on sensor update to see how Azure IoT performs. Finally, conclusion is made on Microsoft Azure IoT's advantages and disadvantages under stress.

The goal of this thesis is to study the international portfolio choices of countries in an asymmetric world. In practice, this corresponds to the salient facts of country portfolios and the underlying structural asymmetries between developing and developed countries in a financially integrated world. In the three main chapters of the thesis, frameworks are developed to advance our understanding of the way various country asymmetries contribute to the emergence of these persistent phenomena in international capital markets. The first essay studies the question of why developing countries experience net equity inflows and bond outflows while developed countries experience net equity outflows and bond inflows, the so-called ‘two-way capital flows'. The analysis is based on an open-economy New Keynesian model of endogenous country portfolios with representative agents in each country. The model is so general that it allows one to perform an assessment of the roles of a long list of country asymmetries in determining the pattern of two-way capital flows. While steady-state net country portfolios are zero in the first essay, the second and third essays consider the situations where this is not true. The second essay presents an OLG model of an endowment economy with a country asymmetry in households' patience. Global imbalances in net positions emerge. Gross portfolio positions are obtained as the sum of standard self-hedging and, moreover, the hedging due to external imbalances. The valuation effects of external adjustments between creditor and debtor countries are rationalized. By introducing non-tradable risks, the third essay models a production OLG economy with a country asymmetry in wealth division. Global imbalances in net positions again arise. Gross portfolio positions are composed of self-hedging, hedging of non-tradable income and hedging of external interest payments, which accounts for the reality of asymmetric asset home bias, i.e. although assets are locally biased everywhere, the pattern is more pronounced in creditor countries.

Nos últimos anos, tem-se presenciado um contínuo aumento na demanda por transporte de carga ferroviário no Brasil, o que tem se refletido em maior volume de projetos para expansão ou revitalização da malha existente no país. Diante deste quadro atual, torna-se essencial que o profissional envolvido com a elaboração de projetos da via permanente tenha em mãos informações atualizadas a respeito da variedade de componentes da grade ferroviária existente no mercado, a fim de que os projetos atendam plenamente às necessidades do cliente. Assim sendo, o presente trabalho tem como principal objetivo pesquisar e analisar os tipos de componentes existentes no mercado usados na composição da grade ferroviária (trilhos, dormentes e fixações), com foco principal naqueles que podem ser aplicados às ferrovias de transporte de carga. Primeiramente, a partir de pesquisa em material bibliográfico nacional e internacional, serão descritos os principais aspectos técnicos que devem ser considerados no processo de avaliação destes componentes, tendo como base os parâmetros de projeto da via estabelecidos previamente de acordo com as exigências da operação de carga, tais como: carga por eixo, velocidade de operação, rampa máxima, etc. Em seguida, serão apresentados os tipos de trilhos, dormentes (madeira, concreto monobloco e bi-bloco, aço e plástico) e fixações (rígidas e elásticas) existentes atualmente no mercado e suas características de desempenho e condições de uso estabelecidas pelos respectivos fabricantes. Os dados obtidos nas duas etapas descritas anteriormente serão analisados e confrontados, de forma que seja possível explicitar as relações de interdependência que existem entre os diferentes tipos de componentes. Ao final do trabalho, será apresentado um modelo de fluxograma que reúne os dados de entrada para o projeto da ferrovia de transporte de carga, as diretrizes técnicas que devem ser atendidas em seu projeto e, por fim, os tipos de componentes da grade ferroviária que podem ser empregados de acordo com o caso estudado. Com isso, espera-se que o produto final gerado possa ser uma ferramenta útil na etapa de concepção de novos projetos ferroviários, visto que apresentará de maneira clara e objetiva um conjunto de informações bastante abrangente e atualizado a respeito dos critérios técnicos e das opções de componentes disponíveis no mercado, fornecendo uma orientação inicial consistente ao profissional envolvido sobre os materiais que podem ser aplicados à via em estudo. / Over the last years, a continuous increase on demand for railroad heavy haul transport has been witnessed in Brazil, reflecting in bigger volume of projects for expansion or improvement of the existing lines in the country. With this current situation, it becomes essential that the professional involved with the elaboration of projects of the permanent way should have information brought up to date regarding the variety of components of the existing railroad materials in the market, so that the projects take care of fully to the necessities of the customer. Thus being, the present work has as main objective to search and to analyze the types of existing components in the market used in the composition of the railroad superstructure (rails, ties and fastenings), with main focus in that which can be applied to the heavy haul railways. First, from research in national and international bibliographical material, the main aspects related to the performance that must be considered in the process of evaluation of these components will be describes, having as base the design parameters of the way established previously in accordance with the requirements of the load operation, such as: position for axle, speed of operation, maximum slope, and others. After that, the types of rails, ties (wood ties, monoblock and bi-block concrete ties, steel ties and plastic ties) and fastenings (rigid and elastic) currently available in the market and its characteristics of performance and conditions of use will be presented, according to the information provided by the its respective manufacturers. All the reports showed in the two previous described stages will be analyzed and compared, so that is possible to highlight the interdependence relations that exist between the different types of components. At the end of the work, a flowchart model which gathers the input data about the heavy haul railroad, the performance guidelines that should be followed and the types of components of the railroad superstructure that can be used in accordance to the studied case, will be presented. With that, it is expected that the produced flowchart could be a useful tool in the stage of design of a new railroad, once it will present in a clear and objective way an embracing and up-to-date set of information regarding the performance criteria and the options of components available in the market, supplying a consistent initial orientation to the designer about the materials that could be applied to the railway.