Made available in DSpace on 2016-04-29T14:16:43Z (GMT). No. of bitstreams: 1 Stela da Silva Ferreira.pdf: 1697162 bytes, checksum: b106811ed3aeb94f8493db6b228482c3 (MD5) Previous issue date: 2015-09-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This work intends to explore the connections between on the job training and work place within the SUAS - Sistema Único de Assistência Social (Brazilian Unified Social Protection System). It is based on some SUAS social workers narratives collected in public debates on social work with families, in interviews, and focal groups. This method allowed access to collective work experiences at municipalities, and regional levels within the State of Sao Paulo. Those narratives in the light of the bibliography of several fields philosophy, social work, public healthy, and sociology -, make it explicit some elements such as conflicts, academic knowledge, actual experience and new knowledge needs. Those elements might contribute to deep the connections between on the job training and work place within the SUAS - Sistema Único de Assistência Social (Brazilian Unified Social Protection System). One intends to contribute with the production of gradients of the construction of autonomy and coresponsability for a more democratic management of the SUAS that responds to a dignity pattern forged in the public service user s rights of the Brazilian social protection policy / O objeto desse estudo são os nexos entre educação em serviço e trabalho institucional do sistema único de assistência social. As condições históricas e políticas que o tornam possível na primeira década (2005-2015) de implantação do Sistema Único de Assistência Social (SUAS) são apresentadas na introdução. Nela são recuperados processos macroinstitucionais nos quais a gestão do trabalho e a educação permanente foram pautados (as Conferencias Nacionais) e instituídos com a aprovação de normativas de alcance nacional. Também são apresentados ao leitor os referenciais analíticos do método proposto a pedagogia da problematização (também denominada como aprendizagem baseada em problemas no ensino superior). A sequência dos capítulos demonstra o desenvolvimento do próprio método estudado: inicia-se a partir de situações concretas de trabalho que geram crises e incertezas no ambiente institucional. Em seguida, estimula-se o pensamento crítico referenciado na ética de responsabilidade (ética pública), agregando elementos teórico-metodológicos já existentes, bem como contextualiza-se essas situações na história da assistência social e os projetos éticos e políticos nela em disputa. Finalizando a demonstração do método, o último capítulo volta às experiências concretas para delas extrair pistas e indicações de novos modos de articular educação e trabalho no SUAS, sobretudo pela demanda de produção de novos conhecimentos e estratégias de uso do poder institucional. Os referenciais analíticos que sustentam esta escolha são trazidos somente quando necessário explicitá-los diante das situações concretas apresentadas. Além de ampla pesquisa bibliográfica em diferentes áreas do conhecimento, o estudo vale-se de narrativas de trabalhadores do SUAS produzidas em espaços coletivos: debate público sobre o trabalho social com famílias na região Sudeste, envolvendo profissionais e gestores das esferas federal, estadual e municipal; entrevista coletiva e grupo focal que deram acesso a experiências coletivas em âmbito municipal e regional no estado de São Paulo. Nas considerações finais são explicitados os elementos que este estudo pôde acessar e que tem consistência para adensar os nexos entre educação permanente e trabalho no SUAS. Por fim, são destacados dois aportes analíticos: i) a diferenciação ente educação continuada e educação permanente no SUAS e ii) os deslocamentos de poder que o método pode produzir nas relações de saber e poder instituídas na gestão, no cotidiano dos serviços e na atenção direta ao cidadão. Com isso, pretende-se contribuir com a produção de maiores gradientes de construção de autonomia e corresponsabilidade para uma gestão mais democrática do SUAS e à altura do padrão de dignidade inscrito nos direitos dos usuários desta política de proteção social devida pelo Estado brasileiro

During hypersonic atmospheric entry, spacecraft are exposed to enormous aerodynamic heat. To prevent the payload from overheating, charring ablative materials are favored to be applied as the heat shield at the exposing surface of the vehicle. Accurate modeling not only prevents mission failures, but also helps reduce cost. Existing models were mostly limited to one-dimensional and discrepancies were shown against measured experiments and flight-data. To help improve the models and analyze the charring ablation problems, a multidimensional material response module is developed, based on a finite volume method framework. The developed computer program is verified through a series of test-cases, and through code-to-code comparisons with a validated code. Several novel models are proposed, including a three-dimensional pyrolysis gas transport model and an orthotropic material model. The effects of these models are numerically studied and demonstrated to be significant.

Space vehicles, while entering the planetary atmosphere, experience high loads of heat. Ablative materials are commonly used for a thermal protection system, which undergo mass removal mechanisms to counter the heat rates. Spallation is one of the ablative processes, which is characterized by the ejection of solid particles from the material into the flow. Numerical codes that are used in designing the heat shields ignore this phenomenon. Hence, to evaluate the effectiveness of spallation phenomenon, a numerical model is developed to compute the dynamics and chemistry of the particles. The code is one-way coupled to a CFD code that models high enthalpy flow field around a lightweight ablative material. A parametric study is carried out to examine the variations in trajectories with respect to ejection parameters. Numerical results are presented for argon and air flow fields, and their effect on the particle behavior is studied. The spallation code is loosely coupled with the CFD code to evaluate the impact of a particle on the flow field, and a numerical study is conducted.

The advancement of each component of aerospace vehicles is necessary as the continual demand for more aggressive missions are created. Improvements in propulsion and guidance system electronics are invaluable; however without material development to protect the vehicle from its environment those advances will not have a practical application. Thermal protection systems (TPS) are required in both external applications; for example on reentry vehicles, as well as in internal applications; to protect the casing of rockets and missiles. This dissertation focuses on a specific type of internal solid rocket motor TPS, ablatives. Ablatives have been used for decades on aerospace vehicles. To protect the motor from the hostile environment, these materials pyrolyze and char. Both of these mechanisms produce a boundary between the combustion gases and the motor as well as release the heat that the decomposed material has absorbed. These sacrificial materials are intended to protect the casing that it is attached to. With the development of polymer nanocomposites (PNCs) in the last couple of decades, it is of interest to see how these two fields can merge. Three different nanomaterials (carbon nanofibers, multiwall carbon nanotubes, and nanoclays) are examined to observe how each behaves in environments that simulate the motor firing conditions. These nanomaterials are individually added to a thermoplastic polyurethane elastomer (TPU) at different loadings, creating three distinct families of polymer nanocomposites. To describe a materials ablative performance, a number of material properties must be individually studied; such as thermal, density, porosity, char strength, and rheology. Different experiments are conducted to isolate specific ablative processes in order to identify how each nanomaterial affects the ablative performance. This dissertation first describes each material and the ablative processes which are characterized by each experiment. Then basic material properties of each family of materials are described. Degradation and flammability experiments then describe the degassing processes. Studies of the material char are then performed after full blown rocket experiments are done. These tests have shown that of the three nanomaterials, nanoclay enhances the TPU ablative performance the most while the CNF provides the least enhancement. / text

Οι πύργοι ελέγχου αεροδρομίων αποτελούν βασικό συστατικό για την ομαλή και συνεχή εξυπηρέτηση των πτήσεων πολιτικών και στρατιωτικών αεροσκαφών. Βρίσκονται εγκατεστημένοι σε κάθε αεροδρόμιο και αποτελούν το υψηλότερο κτίριο στο περιβάλλοντα χώρο, πράγμα που δικαιολογεί και τον μεγάλο αριθμό κεραυνικών πληγμάτων που μπορούν να δεχτούν. Σκοπός αυτής της διπλωματικής εργασίας είναι η μελέτη ενός συστήματος αντικεραυνικής προστασίας που βρίσκεται εγκατεστημένο σε έναν πύργο ελέγχου αεροδρομίου. Η απόδοση του συστήματος αντικεραυνικής προστασίας διαδραματίζει σημαντικό ρόλο στην αποτελεσματική λειτουργία του πύργου ελέγχου και στη γενικότερη αποτελεσματική λειτουργία του αερολιμένα. Με τη χρήση του προγράμματος εξομοίωσης αναλογικών και ψηφιακών κυκλωμάτων Orcad-Pspice, προσομοιώνεται το σύστημα αντικεραυνικής προστασίας, με βάση τον πύργο ελέγχου που του διεθνούς αερολιμένα Ελ. Βενιζέλος, μετράται το δυναμικό στη βάση του πύργου ελέγχου και τα ρεύματα στους αγωγούς καθόδου, όταν κεραυνός πλήττει το σύστημα συλλεκτήριων αγωγών. / The airport traffic control towers are a key component for the smooth and continuous service flights for both political and military aircraft. They are located at each airport and are the highest building in the surroundings, which justifies the number of lightning strikes that accepts. The purpose of this thesis is the study of a lightning protection system which is installed in an airport control tower. The efficiency of the lightning protection system constitute an important role in the effective operation of the control tower and the overall efficient operation of the airport. Using the analog and digital circuits simulation program Orcad-Pspice, the lightning protection system simulated , based on the control tower to the International airport Eleftherios Venizelos , the measured potential at the base of the control tower and the currents in the downconductors , when lightning strikes the collectors system

Civil protection as well as the protection of the population is a dynamic field which has a deep history in the Czech Republic dating back to the dark time of World War I. The civil protection was first based on the voluntariness principle. The real origin of the civil protection came with Act No. 82/1935 Coll. on the protection and defense against air attacks. The aim of this thesis is to characterize the protection of the population and propose the future direction of protecting of the population through changes or innovations that would strengthen the protection of the population. In the practical part of this thesis is based on the research question: "Has the civil protection transformation established a reliable system that does not require either major changes or minor changes?" The research part of the thesis is based on a qualitative research. The practical part of the thesis is based on a research method "structured interview". The structured interviews were conducted with the experts at the regional level all seven territorial departments of the Fire and Rescue Services of the South Bohemian Region. The conclusion of this thesis (mainly based on the strucutred interviews with the experts) is a statement that by the civil protection transformation was created a reliable system of protection of the population with a minor space for improvement. The fundamental change in the system would be a consolidation of the system legislative into a separate law on civil protection / protection of the population. The current crisis legislation would be subordinate to this Act. Other proposed changes to the protection of the population and its further direction of protection of the population are presented in the section "Conclusion".

Submitted by PEDRO GUILHERME SILVA PESCI null (peg_pesci@hotmail.com) on 2017-11-30T13:40:46Z No. of bitstreams: 1 Versão Final.pdf: 56735184 bytes, checksum: 4e1d7d9c3a8db1009fa3e028174b3593 (MD5) / Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2017-11-30T17:38:21Z (GMT) No. of bitstreams: 1 pesci_pgs_me_guara.pdf: 56735184 bytes, checksum: 4e1d7d9c3a8db1009fa3e028174b3593 (MD5) / Made available in DSpace on 2017-11-30T17:38:21Z (GMT). No. of bitstreams: 1 pesci_pgs_me_guara.pdf: 56735184 bytes, checksum: 4e1d7d9c3a8db1009fa3e028174b3593 (MD5) Previous issue date: 2017-11-24 / Materiais utilizados em componentes de veículos espaciais, como em tubeiras ou superfícies expostas à reentrada atmosférica, são sujeitos a ambientes termicamente agressivos. Este trabalho apresenta estudos envolvendo o desempenho de materiais compósitos utilizados em sistemas de proteção térmica, a partir da exposição a jatos de plasma, onde os fluxos de calor são comparáveis aos da reentrada atmosférica de componentes de veículos espaciais. Amostras de compósitos ablativos de carbono/fenólica foram ensaiadas no túnel de plasma do Laboratório de Plasmas e Processos do ITA (Instituto Tecnológico de Aeronáutica), por meio de uma tocha de plasma alimentada por uma fonte de energia elétrica de corrente contínua de 50kW. Os parâmetros de operação do túnel de plasma foram otimizados para reproduzirem as condições próximas do ponto crítico de reentrada das cargas úteis dos veículos espaciais desenvolvidos pelo IAE (Instituto de Aeronáutica e Espaço). As amostras em estudo foram desenvolvidas e fabricadas no Brasil, a partir de materiais de especial interesse do IAE. Para comparação, foi também ensaiado outro material com propriedades já bem estabelecidas como o teflon, sob as mesmas condições ablativas. Foram determinadas as perdas de massa e as taxas de perda de massa específicas das amostras, as temperaturas radiométricas superficiais e termométricas internas, em função do tempo de exposição ao fluxo térmico. Foi realizada também a avaliação da evolução das interfaces por comparação entre simulação e a amostra após o ensaio. Os resultados obtidos permitiram estimar as propriedades do comportamento ablativo dos materiais testados e validar o modelo teórico usado na simulação computacional para sua utilização em geometrias próximas às dos sistemas de proteção térmica utilizadas no setor aeroespacial / Materials used in space vehicles components, such as nozzles or surfaces exposed to atmospheric reentry, are subjected to thermally aggressive environments. This work presents studies involving the performance of composite materials used in thermal protection systems, through the exposure to plasma jets, where the heat fluxes are comparable to atmospheric reentry of space vehicle components. Samples of ablative carbon/phenolic composites were tested in the plasma tunnel of ITA’s (Aeronautics Institute of Technology) Plasma and Process Laboratory, by a plasma torch with a 50kW DC power source. The plasma tunnel operating parameters were optimized to reproduce the conditions close to the critical re-entry point of the space vehicles payloads developed by the IAE (Aeronautics and Space Institute). The samples in study were developed and manufactured in Brazil, from materials of special interest to IAE. For comparison, another material with well established properties such as teflon was also tested under the same ablative conditions. The mass loss and the specific mass loss rates of the samples, the surface radiometric and internal thermometric temperatures, as a function of the exposure time to the thermal flow, were determined. The evolution of the interfaces was also performed by comparison between simulation and the sample after the test. The results allowed to estimate the properties of the ablative behavior of the materials tested and to validate the theoretical model used in the computational simulation for its use in geometries close to the thermal protection systems used in the aerospace sector

Submitted by Jakeline Ortega (jakortega@unoeste.br) on 2018-04-05T18:50:00Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Murilo Delanhesi de Oliveira (1).pdf: 1223412 bytes, checksum: f5b31961ed8d7d65ed132c1080bfdc06 (MD5) / Made available in DSpace on 2018-04-05T18:50:01Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Murilo Delanhesi de Oliveira (1).pdf: 1223412 bytes, checksum: f5b31961ed8d7d65ed132c1080bfdc06 (MD5) Previous issue date: 2017-06-09 / This research, linked to the Research Line "Educational Institution: Organization and Management", of the Master's Program in Education of Universidade do Oeste Paulista (UNOESTE), had the objective of studying the perceptions of teachers who work with school conflict mediation in a state public school, located in the interior of the State of São Paulo. It was interesting to investigate the professionals' statements about what they understand as violence, their practices and the ways in which they should be confronted. Therefore, the main objectives of the research were: 1) Identify what they mean by "violence" and how they recognize their forms of manifestation in school settings; 2) Recognize their understandings and justifications regarding the cases of violence that they identify in the school where they work; 3) Understand the assessments they make of the possibilities and results of their work, as well as the limitations and potentialities of the same to contribute to the resolution of cases of violence in the school. The main participants of the research were the two PMECs that work in the mentioned school unit and, in a more tangential way, the other mediating professionals that work in the same Teaching Board of which the school is part participate. This is a qualitative research, of the case study type. The following materials and procedures were used for the production of data: a) Resolutions of the Secretary of Education nº 19/10 and 07/12, one that establishes the System of School Protection and created the function of the PMEC, and the other, which brought several deliberations about this professional; b) observation and follow-up of technical orientation meetings for the 36 Teaching Professionals, as well as the application of a questionnaire to these professionals; c) the approach of the two PMECs in the investigated school through structured interviews and semistructured interviews followed with the presentation of dilemmas, represented by hypothetical situations of violence in the school. The development and conclusions of the research allowed to follow the educational policies of the state of São Paulo, with its idealizations and limitations, bureaucratic and pedagogical spheres that focus on the training of mediators and the particularities of their actions in the daily life of a given school. We conclude this research by stating that the two PMECs, despite their working conditions and the fragilities and contradictions that surround their function and the School Protection System, are building their day to day function, between errors and correctness, performing several expressive actions in the school. On the other hand, there were strong limitations to the development of more effective conflict mediation in schools. / Esta pesquisa, vinculada à Linha de Pesquisa “Instituição Educacional: Organização e Gestão”, do Programa de Mestrado em Educação da Universidade do Oeste Paulista (UNOESTE), teve como objeto o estudo das percepções das professoras que atuam com a mediação escolar de conflitos (PMECs) em uma escola pública estadual, localizada no interior do Estado de São Paulo. Interessou investigar as falas das profissionais acerca daquilo que compreendem como violência, suas práticas e sobre os modos como deve ser enfrentada. Por conseguinte, a pesquisa teve por principais objetivos: 1) Identificar o que entendem por “violência” e como reconhecem as suas formas de manifestação em meio escolar; 2) Reconhecer quais são suas compreensões e justificativas em relação aos casos de violência que identificam na escola onde atuam; 3) Compreender as avaliações que fazem das possibilidades e dos resultados de seu trabalho, bem como as limitações e potencialidades do mesmo para contribuir com a resolução de casos de violência na escola. As principais participantes da pesquisa foram as duas PMECs que atuam na unidade escolar referida e, de forma mais tangencial, participam os demais profissionais mediadores que atuam na mesma Diretoria de Ensino da qual faz parte a escola. Trata-se de uma pesquisa de abordagem qualitativa, do tipo estudo de caso. Para a produção de dados foram utilizados os seguintes materiais e procedimentos: a) Resoluções da Secretaria da Educação nº 19/10 e 07/12, uma que institui o Sistema de Proteção Escolar e criou a função do PMEC, e a outra, que trouxe várias deliberações sobre este profissional; b) observação e acompanhamento das reuniões de orientação técnica aos 36 Professores Mediadores, bem como a aplicação de questionário a estes profissionais; c) a abordagem das duas PMECs, na escola investigada, por meio de entrevistas estruturadas e entrevistas semiestruturadas seguidas com a apresentação de dilemas, representados por situações hipotéticas de violência na escola. O desenvolvimento e conclusões da pesquisa permitiram acompanhar as políticas educacionais do estado de São Paulo, com suas idealizações e limitações, as esferas burocráticas e pedagógicas que incidem sobre a formação dos mediadores e as particularidades de suas ações no cotidiano de uma determinada escola. Concluímos esta pesquisa constatando que as duas PMECs, apesar das suas condições de trabalho e das fragilidades e contradições que circundam sua função e o Sistema de Proteção Escolar, estão construindo sua função no dia a dia, entre erros e acertos, realizando diversas ações expressivas na escola. Por outro lado, foram evidenciadas fortes limitações para que venha a ocorrer um desenvolvimento mais profícuo da mediação de conflitos nas escolas.

När en metall är omgärdad av en elektrolyt, så som havsvatten, kommer det att byggas upp en naturlig potential. Det sker en elektronvandring mellan materialet och havsvattnet och ju större potentialskillnad desto större sannolikhet att metallen kommer korrodera. Korrosion är en stor och viktig fråga för offshorekonstruktioner och byggnader.  För att uppnå en konstruktions designade livslängd kan åtgärder vidtas med hänsyn till kapitalkostnader och drift- och underhållskostnader.  Denna studie syftar till att jämföra ekonomiska för- och nackdelar hos de två korrosionsskyddssystemen Galvanic Anode Corrosion Protection (GACP) och Impressed Current Cathodic Protection (ICCP) på havsbaserade vindkraftsfundament. Det förstnämnda systemet använder offeranoder och det sistnämnda är ett katodiskt korrosionsskydd med hjälp av påtryckt ström.  Studien bestod av flera steg av litteraturstudier där teori om korrosion och korrosionssystem användes för att till slut kunna jämföra valda korrosionsskyddssystem.  Resultatet visar att GACP har fler fördelar och färre nackdelar än ICCP och skulle därmed vara mer ekonomiskt fördelaktig i marina miljöer. GACP ger också önskad effekt direkt vid installation och behöver inte någon strömkälla, ICCP är mer komplicerat och är inte effektivt förrän hela systemet är monterat och i drift. Dessutom behöver ICCP extra strömkälla samt kablage. / When a metal is surrounded by an electrolyte, such as seawater, a natural potential will be built up. An electron migration between the material and the seawater will happen and the greater the potential difference, the greater the probability that the metal will corrode. Corrosion is an important issue when it comes to offshore structures. In order to achieve a structure designed lifetime, measures can then be taken with regard to capital costs and operating and maintenance costs. This study aims to compare the economic advantages and disadvantages of the two, Galvanic Anode Corrosion Protection (GACP) and Impressed Current Cathodic Protection (ICCP), corrosion protection systems on offshore wind power foundations. The first mentioned system uses sacrificial anodes and the second is a cathodic corrosion protection by an applied current. The study consisted of several stages of literature studies where theory of corrosion and corrosion systems was used to finally be able to make a comparison between selected corrosion protection systems. The result shows that GACP has more advantages and fewer disadvantages than ICCP and would thus be more economical. GACP, for example, is efficient during installation and does not need an additional power source, but ICCP is more complicated and not efficient until complete assembly of the entire system and requires additional power source and cables. Right now, there is no design standard available with detailed requirements and advice has been given as for galvanic anodes systems.

in English. Eddy Bruno Esien, Dissertation Thesis The purpose of this dissertation seeks to find out how young third country immigrants` transition from welfare to all types of work take place in Austria, Finland, and the Czech Republic and how is the role of their employment services in work-related activation programs implementation to smoothing this process. The thesis consists of an Introduction and sixteen included articles. The dissertation is based on a qualitative cross-national comparative fewer case study approach, in which both primary and secondary data were collected for analysis. The main research question was: How does young third country immigrants` transition from welfare to all types of work take place in Austria, Finland, and the Czech Republic and what is the role of their employment services in work-related activation programmes implementation to smoothing this process? In more detail research questions included: (a) the roles of the governments, public and private employment service agencies in the implementation of work-related activation program to enable young third country immigrant's transition from welfare to all types of work in Austria, Finland and the Czech Republic; (b) the relationships between the public and private employment service agencies and the Governments in...