The purpose of this phenomenological study was to explore the lived experiences of counselor education doctoral students who participated in multiple roles and relationships. Random purposeful sampling was used to conduct in-depth interviews with current doctoral students in CACREP-accredited counselor education programs who had completed at least one year of full-time enrollment as a doctoral student, participated in a minimum of two multiple roles that were provided in an a priori list, and had access to videoconferencing software in order to participate in the study. The participants in this study reported and described perceptions of their lived experiences as counselor education doctoral students. The primary research question for the study was “How do counselor education doctoral students experience the phenomenon of multiple roles and relationships?” A review of the literature that examined types of multiple roles and relationships between counselor educators and students, ethical standards, and models for ethical management provided the foundation for the study. Semi-structured phenomenological interviews comprised of open-ended questions were used to collect data via videoconferencing software. Audio taped interviews were transcribed and analyzed for key words and descriptive terms. The data were coded into categories, categories were clustered into themes and themes were cross-analyzed to create super-ordinate themes. Super-ordinate themes were used to address the primary and secondary research questions. Three super-ordinate themes emerged: awareness and education, multiple roles and relationships as transformative, and experiential learning. Implications for counselor education doctoral students and programs are presented along with recommendations for further research. Personal reflections of the researcher were provided.

The number of publications on environmental footprint indicators has been growing rapidly, but with limited efforts to integrate different footprints into a coherent framework. Such integration is important for comprehensive understanding of environmental issues, policy formulation and assessment of trade-offs between different environmental concerns. Here, we systematize published footprint studies and define a family of footprints that can be used for the assessment of environmental sustainability. We identify overlaps between different footprints and analyse how they relate to the nine planetary boundaries and visualize the crucial information they provide for local and planetary sustainability. In addition, we assess how the footprint family delivers on measuring progress towards Sustainable Development Goals (SDGs), considering its ability to quantify environmental pressures along the supply chain and relating them to the water-energy-food-ecosystem (WEFE) nexus and ecosystem services. We argue that the footprint family is a flexible framework where particular members can be included or excluded according to the context or area of concern. Our paper is based upon a recent workshop bringing together global leading experts on existing environmental footprint indicators.

Este trabalho desenvolve um método de seleção de fronteiras para Análise de Ciclo de Vida (ACV) de sistemas que emitem componentes tóxicos. Isto envolve o desenvolvimento de um modelo de predição de concentração e dose de poluentes emitidos de chaminés, que tem a vantagem de ser simples e não requerer grande número de dados de entrada. Esse modelo e mais os dados de valoração econômica de danos ambientais disponíveis na literatura, compõem o modelo geral de estimativa de custos devido à emissão de poluentes, ou seja, a Análise de Custos em Ciclo de Vida (ACCV). O modelo geral é então usado para definir as fronteiras do sistema de ACCV. Demonstra-se a aplicação do novo método em um ciclo de vida hipotético de produção de celulose. / This work develops a method for Boundary Selection (BS) for Life Cycle Assessment (LCA) of systems with stacks emitting toxics compounds. The new approach involves the development of a model of concentrations and dosage of pollutants in the vicinity of emission source that is simple and non-intensive data is required. This model plus impact costs estimations available at environmental economic studies, comprise the general model of Life Cycle Cost Analysis (LCCA) based on exposure. This general model is then used in the Boundary Selection in LCCA. A demonstration of the application of the model is performed to a hypothetical inventory system of a pulp mill.

Cette thèse propose de penser les liens entre gouvernance, innovation sociale et territoire dans des marges transfrontalières des Alpes dans une perspective de dépassement disciplinaire. Inscrite principalement en géographie et secondairement en droit, cette recherche explore des thématiques communes que sont la frontière et le territoire. Elle tente de trouver un terrain d’entente sur la gouvernance avant aborder un sujet relativement neuf celui de l’innovation sociale.La gouvernance des coopérations transfrontalières Alpi Marittime-Mercantour et Espace Mont-Blanc a ainsi été décortiquée et analysée de façon comparative. D’ordinaire peu étudiées par la littérature sur la gouvernance, ces coopérations présentent pourtant un intérêt du fait de leurs thématiques et enjeux spécifiques par rapport aux coopérations urbaines. En effet, le développement durable selon les trois piliers classiques est au coeur de leur projet respectif et doit trouver un équilibre acceptable entre protection et développement économique. La frontière défonctionnalisée sur le même modèle que les autres frontières internes à l’Europe permet une coopération. Cependant le relief fait obstacle au franchissement et affecte les modalités de la coopération. Cet aspect doit être intégré à l’analyse de la gouvernance, qui repose sur trois formes : une gouvernance institutionnelle (formelle et informelle), une gouvernance de projet (plutôt formelle) et une gouvernance de programme transfrontalier relativement complexe. Ce système de gouvernance est bien entendu multi-niveaux avec des relations verticales (bottom-up et top-down) mais aussi horizontales. La thèse fait le point sur la définition de l’innovation et en particulier de l’innovation sociale dans une perspective critique. L’ambition n’est pas de déceler des innovations, mais plutôt d’expliquer comment le système de gouvernance décrit précédemment met en place des politiques publiques ayant entre autres objectifs l’innovation et de montrer les failles avec les « presque innovations » et les « innovations ratées ». Enfin les processus d’institutionnalisation et de territorialisation de la coopération transfrontalière sont décrits en regard l’un de l’autre. Tous deux sont des processus continus inscrits dans le temps long, qui dépendent du ou des projets des acteurs de la coopération, de leurs ambitions, mais aussi des cadres politiques et juridiques nationaux et européen. / This thesis examines the links between governance, social innovation and territories with a disciplinaryoverrun context, in Alpine cross-border margins. Mainly related to geography and secondarily to lawdisciplines, this research explores common thematic such us border and space. It tries to find commonground on the governance before working on relatively new topic: social innovation.The Alpi Marittime-Mercantour and Espace Mont-Blanc cross-border governance has been analyzedwith a comparative approach. These cases are poorly investigated by the literature on governance,although they have interesting special topic and issues like sustainable development. They have to findan acceptable balance between protection measures and socio-economic development. Thefunctionalization of border allows for cross-border cooperation but the topography and the pooraccessibility constraint and affect the agreement the of the governance. The analysis of governance isbased on three different forms: institutional governance (formal and informal), project governance(mainly formal) and Interreg program governance relatively complex. This system is obviously multilevelwith vertical (top-down and bottom-up) and horizontal relations.The thesis reviews the definition of innovation especially social innovation with a critical perspective.The ambition isn’t to say “this is an innovation” but to understand and explain how the system ofgovernance implements public policies and finally produces innovations. The goal is also to show andanalyze “almost innovations” and “failed innovation”.Finally, this research considers institutionalization and territorialization processes next to each other.Both of them are continuous on long term and they are dependent on project’s players, their ambitions,but also on national and European, political and legal framework.

O presente trabalho propõe um novo modelo para dispersão de poluentes na atmosfera, tal modelo foi idealizado no trabalho de dissertação da autora e continuou-se seu desenvolvimento nesta pesquisa. O modelo é baseado na solução semi-analítica da equação de advecção-difusão para emissão contínua, com resolução através do método de separação de variáveis e da transformada de Fourier. As condições de contorno são tratadas como infinitas reflexões do poluente no solo e no topo da camada limite atmosférica. Adiante, estas reflexões são utilizadas de modo parcial, na tentativa de considerar fenômenos da dispersão que não podem ser explicitados no modelo determinístico, de forma que os contornos podem ser entendidos como estocásticos, ou seja, pode-se interpretar os contornos como uma amostragem de uma distribuição. Além disso, é realizada uma otimização nos contornos parcialmente reflexivos, com o objetivo de desenvolver uma metodologia de otimização e determinar os valores ótimos para a reflexão parcial. Os resultados obtidos foram, primeiramente, comparados com os experimentos de Copenhagen e Hanford. Posteriormente, comparou-se o modelo com dados de concentração coletados em uma fábrica de celulose, a CMPC Celulose Riograndense. Simulou-se, também, a dispersão de poluentes emitidos por uma usina termelétrica no Brasil, que faz parte do programa de pesquisa e desenvolvimento tecnológico do setor de energia elétrica da Agência Nacional de Energia Elétrica (ANEEL). / The present work proposes a new model for pollutant dispersion in the atmosphere, this model was idealized in the dissertation work of the author and continued its development in this research. The model is based on the semi-analytic solution of the advectiondiffusion equation for continuous emission, with resolution through the method of separation of variables and the Fourier transform. The boundary conditions are treated as infinite reflections of the pollutant in the soil and at the top of the atmospheric boundary layer. These reflections are used in a partial way in the attempt to consider phenomena of dispersion that can not be explained in the deterministic model, so that the boundaries can be understood as stochastic, that is, one can interpret the boundaries as a sampling of a distribution. In addition, an optimization is performed in the partially reflective boundaries, with the purpose of developing an optimization methodology and determining the optimal values for the partial reflection. The results obtained were firstly compared with the experiments of Copenhagen and Hanford. Subsequently, the model was compared with concentration data collected at a cellulose production plant. The dispersion of pollutants emitted by a thermoelectric plant in Brazil was also simulated, which is part of the research and technological development program of the electric energy sector of the National Electric Energy Agency (ANEEL).

No description available.

The purpose of this work is to study the effects of boundaries on granular flows down vibrating inclines, on segregation in granular mixtures induced by boundary vibrations, and on flows of granular mixtures through vibrating sieves. In each case, we employ techniques borrowed from the kinetic theory to derive an appropriate set of boundary conditions, and combine them with existing flow theories to calculate the profiles of solid volume fraction, mean velocity, and granular temperature throughout the flows. The boundaries vibrate with full three-dimensional anisotropy in a manner that can be related to their amplitudes, frequencies, and phase angles in three independent directions. At impenetrable surfaces (such as those on the inclines), the conditions derived ensure that momentum and energy are each balanced at the boundary. At penetrable surfaces (such as sieves), the conditions also ensure that mass is balanced at the boundary. In these cases, the momentum and energy balances also are modified to account for particle transport through the boundary. Particular interest in all the applications considered here is in how the details of the boundary geometry and the nature of its vibratory motion affect the resulting flows. In one case, we derive conditions that apply to a monosized granular material that interacts with a bumpy, vibrating, impenetrable boundary, and predict how such boundaries affect steady, fully developed unconfined inclined flows. Results indicate that the flows can be significantly enhanced by increasing the total energy of vibration and are more effectively enhanced by normal vibration than by tangential vibration. Regardless of the direction of vibration, the bumpiness of the boundary has a profound effect on the flows. In a second case, we derive conditions that apply to a binary granular mixture that interacts with a flat, vibrating, penetrable sieve-like boundary, and predict how such boundaries affect the process in which the particles pass through the sieve. In the special case in which the particles are all the same size, the results make clear that energy is more effectively transmitted to the assemblies when either the total vibrational energy or the normal component of the vibrational energy is increased, but that an increase in the energy transferred to the material can sometimes actually decrease the flow rates through the sieve. Consequently, at any instant of time in the sieving process, there is an optimum level of vibrational energy that will maximize the flow rate. For the sieving of binary granular assemblies, the physics associated with the effects of energy transfer on the flow rates still applies. However, in these cases, the flows through the sieve are also profoundly affected by segregation that occurs while the particles reside on sieve before the pass through. For this reason, we also isolate the segregation process from the sieving process by considering the special case in which the holes in the vibrating sieve are too small to allow any particles to pass through. In this case, the results show that under most circumstances the region immediately adjacent to the vibrating surface will be populated almost entirely by the smaller particles or by the more dissipative particles if there is no size disparity, and that the reverse is true in a second region above the first.

Made available in DSpace on 2016-04-27T16:32:29Z (GMT). No. of bitstreams: 1 Monica dos Santos Lima.pdf: 1935118 bytes, checksum: 5a8aa138479733a40b7bb78e87acd172 (MD5) Previous issue date: 2011-05-05 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This research characterized inside the context of restructuring of public policies of Indigenous scholastic education since 1970 s, period which emerged propositions of the differential Indigenous school. In view of this context, the objective of this dissertation was to follow the path of the differential Indigenous school inserted on the daily of Aiha Kalapalo village, settled on Indigenous land Xingu Mato Grosso (MT), between 1994, when the first school in the village was built, and 2010. We observed that, precisely because the school in the village occupies a boundary position, which appears contradictions and conflicts due to the imprecision in the formulation of its role in the village, the Indigenous teachers appear as central elements of this new pattern of school, so that they are understood as mediators or translators among the distinct educational systems: the Indigenous and non-Indigenous world. This investigation presented an approach mainly qualitative. The research was conducted by the perspective and comprehension of world from the Indigenous Kalapalo as well as the social and cultural transformations promoted in the hub of the schooling process in the village. The data were collected through semi-structured interviews, observation of the daily activities from those who participated in the research. To guide the data organization, the investigation had the base of concepts of schools as boundary space by Antonella Tassinari (2001) and the notion of scholastic subjects by André Chervel (1990 / Esta pesquisa se caracterizou dentro do contexto da reestruturação das políticas públicas de educação escolar indígena a partir da década de 1970, período em que emergem as proposições da escola indígena diferenciada. Tendo em vista esse contexto, o objetivo desta dissertação foi o de percorrer a trajetória da instituição escolar indígena diferenciada inserida no cotidiano da aldeia Aiha Kalapalo, situada na Terra Indígena do Xingu - Mato Grosso (MT), entre o ano de 1994, quando foi construída a primeira escola na aldeia, e o ano de 2010. Observa-se que, exatamente pelo fato de a escola na aldeia ocupar uma posição de fronteiras , na qual surgem às contradições e os conflitos decorrentes da imprecisão da formulação de seu papel na aldeia, os professores indígenas aparecem como elementos centrais desse novo modelo de escola, na medida em que são entendidos como mediadores ou tradutores em meio dos distintos sistemas educacionais: o do mundo indígena e o do não indígena. Essa investigação apresentou uma abordagem prioritariamente qualitativa. A pesquisa se orientou pela perspectiva e compreensão de mundo dos indígenas Kalapalo bem como pelas transformações sociais e culturais promovida no cerne do processo de escolarização da aldeia Aiha. Os dados foram coletados por meio de entrevistas semi-estruturadas, observação das atividades cotidianas dos sujeitos participantes da pesquisa. Para nortear a organização dos dados, a investigação teve como base os conceitos de escola como espaço de fronteiras de Antonella Tassinari (2001), a noção de disciplinas escolares de André Chervel (1990)

A partir de uma abordagem do fenômeno das cirurgias plásticas enquanto algo que se conforma na prática, esta dissertação versa sobre os limites entre o reparador e o estético relativos a esses procedimentos. Tendo como espinha dorsal a formação das(os) médicas(os) e a constituição dessa especialidade da medicina, tais fronteiras serão abordadas a partir do entendimento de que não apenas auxiliam na conformação das cirurgias plásticas, mas são também constituídas em relação a essas últimas. Através da participação em eventos promovidos por Ligas de Cirurgia Plástica e entrevistas realizadas com graduandas, residentes, cirurgiãs e cirurgiões plásticos, este trabalho tem como objetivo construir uma narrativa, entre tantas outras possíveis, acerca dos modos como os limites entre o estético e o reparador têm se instituído discursivo-materialmente. Antes, contudo, parte-se de uma abordagem histórica a fim de uma compreensão mais situada a respeito de como essa especialidade tem se conformado ao longo do tempo. Por meio de diferentes investimentos esta dissertação trata, em síntese, sobre como esses procedimentos assumem diferentes realidades. Assim, contingências históricas, sociais, econômicas, políticas e materiais, entre inúmeras outras, são compreendidas de maneira indissociável como atuantes na conformação das cirurgias plásticas e dos limites concernentes a elas. Por fim, sugere-se que um entendimento dessas realidades enquanto múltiplas nos auxilia na construção de uma apreensão do conhecimento médico como algo que não está dado, mas como práticas histórico-materialmente situadas. Ainda, a partir da discussão central proposta por este trabalho são estabelecidos pontos de confluência entre as cirurgias plásticas e as fronteiras relativas ao corpo e aos binômios natureza/cultura, saúde/doença, forma/função, entre outros. / This dissertation addresses the limits between the cosmetic and the reconstructive surgeries from an approach of the plastic surgery phenomenon as something that conforms in practice. Having as a backbone the formation of the doctors and the constitution of this specialty of medicine, such boundaries will be approached from the understanding that they not only aid in the conformation of plastic surgeries but also are constituted of this last one. Through the participation in events promoted by Plastic Surgery Leagues and interviews with undergraduates, residents and plastic surgeons, this study aims to construct a narrative, among many others possible, about the ways in which the boundaries between the cosmetic and the reconstructive surgeries have been instituted discursive-materially. First, however, it starts with a historical approach in order to understand more about how this specialty has conformed over time. Through different investments, this dissertation deals, in short, with about how these procedures take on different realities. Thus, historical, social, economic, political, and material contingencies, among countless others, are understood as acting in the conformation of plastic surgeries and the limits concerning them. Finally, it suggests that an understanding of these realities as multiple helps us in constructing an apprehension of the medical knowledge as something that is not given but as historical-materially situated practices. Still, from the proposed discussion by this study, points of convergence between plastic surgeries and boundaries related to the body and to the binomials nature/culture, health/illness, form/function, among others, are established.

Les alliages à grains ultrafins semblent prometteurs, au vu de leur forte résistance en traction et de la possibilité d'une mise en forme superplastique à basse température. Toutefois, leurs mécanismes de déformation, qui comportent une part plus ou moins forte de glissement aux joints de grains restent mal connus, et leurs performances en fatigue ont été peu étudiées. Ce travail vise à comparer et analyser le comportement viscoplastique et les mécanismes de déformation et d'endommagement en traction et en fatigue d’un alliage d’aluminium-magnésium "classique" et à grains ultrafins (600nm en moyenne) obtenu par déformation plastique sévère, selon le procédé ECAP.Des essais de relaxation, fluage et traction à diverses vitesses et températures ont permis de mesurer les évolutions des sensibilités à la vitesse en fonction de ces deux paramètres et de montrer: 1) que le raffinement microstructural accroît sensiblement la sensibilité à la vitesse 2) que ce paramètre augmente avec la vitesse de déformation 3) qu'il contrôle la ductilité du matériau à grains ultrafins, qui s'accroît donc à faible vitesse 4) que cette ductilité devient supérieure à celle du matériau classique lorsque la température s'élève. Les domaines de vitesse et température dans lesquels le raffinement microstructural accroît ou diminue la résistance en traction ont été délimités.Les mécanismes de déformation et d'endommagement des deux matériaux ont été étudiés au moyen d'essais de traction sous MEB accompagnés de mesures des champs de déformation par corrélation d'images à plusieurs échelles: méso et microscopique, grâce à des microgrilles d'or et sub-micrométrique, grâce à un mouchetis très fin obtenu par démouillage d'un film d'or. Le glissement aux joints est d'autant plus actif, dans les deux matériaux, que la température augmente et que la vitesse de déformation diminue. Dans l'alliage à grains ultrafins, il a un caractère coopératif et survient préférentiellement aux joints de forte désorientation. Les champs de déformation sont plus hétérogènes dans le matériau à grains ultrafins, où le taux de déformation dépasse 100% dans des bandes localisées.Un modèle éléments finis 2D intégrant, outre la viscoplasticité au sein des grains, un glissement visqueux des joints, a été identifié dans toute la gamme de température explorée et rend assez bien compte du comportement viscoplastique des deux matériaux et de la contribution beaucoup plus forte du glissement aux joints dans l'alliage à grains ultrafins. Il permet également de préciser comment évolue cette contribution au cours de l'écrouissage.Des essais de traction-compression à déformation plastique imposée ont permis d'étudier la plasticité cyclique et les mécanismes d'endommagement en fatigue oligocyclique et des essais à contrainte imposée, d'explorer la fatigue à grand nombre de cycles. Les essais ont été suivis d'observations des surfaces de rupture et d'une analyse statistique de l'endommagement en surface, ainsi que d'observations au MET des arrangements de dislocations. Les deux matériaux manifestent un durcissement cyclique, plus modeste dans l'alliage à grains ultrafins, qui présente, à forte amplitude, une croissance de ses grains. L'écrouissage isotrope prédomine dans l'alliage classique, où la densité de dislocations augmente fortement avec la plasticité cyclique, alors que l'écrouissage cinématique prédomine dans l'alliage à grains ultrafins, en raison de sa moindre aptitude à stocker des dislocations et de la plus grande hétérogénéité de sa déformation plastique. A même amplitude plastique, ce dernier a une durée de vie plus faible, en raison d'un amorçage bien plus rapide des fissures, à partir de particules intermétalliques. A contrainte imposée, le matériau a grain ultrafins a une durée de vie légèrement supérieure, grâce à une propagation plus lente des microfissures, dont le trajet est transgranulaire dans les plus gros grains et intergranulaire dans les plus petits. / Ultrafine grained (UFG) alloys seem promising, based on their high tensile properties and the possibility of superplastic forming at relatively low temperature. However, their deformation mechanisms are not fully understood, and their performance in fatigue has not been thoroughly investigated. This work compares the viscoplastic behavior, and the deformation and damage mechanisms in tension and fatigue of a UFG Al-Mg alloy (600 nm mean grain size) obtained by severe plastic deformation (ECAP process) with that of its coarse-grained (CG) counterpart.The strain rate sensitivity (SRS) of both materials has been measured during creep, relaxation and tensile tests run at various strain rates and temperature. Microstructural refinement is shown to increase the SRS, which rises as the strain rate decreases, and controls the ductility. The UFG material becomes softer and more ductile than the CG material at high temperature. The temperature and strain rate domain for which the UFG alloy is stronger or softer has been determined.Tensile tests run in a SEM, with DIC measurements of strain fields at meso/ micro scales (using gold microgrids printed by electron beam lithography) and at sub-micron scale (using a superfine speckle obtained by film remodelling) have shown that grain boundary sliding is more and more active in both materials as the temperature rises and as the strain rate decreases. Grain boundary sliding is cooperative and occurs mostly at high-angle grain boundaries in the UFG alloy, where the strain field is more heterogeneous, and where very high strain levels (> 100%) are often observed in localized bands.A 2D finite element model taking into account the viscoplastic behaviour inside the grains, and viscous sliding at the grain boundaries has been identified other the whole temperature range investigated. It captures well the observed behaviours and the much larger contribution of grain boundary sliding in the UFG alloy. It also provides the evolution of this contribution during strain hardening.Plastic strain-controlled push-pull tests and stress-controlled push-pull tests were run to investigate the cyclic behaviour and damage mechanisms of the two materials in low and high-cycle fatigue. The tests were followed by fractographic observations, statistical analysis of surface damage, as well as TEM observations of dislocations arrangements. Both materials exhibit cyclic hardening, although it is more modest in the UFG alloy, in which grain growth occurs at high amplitude. While isotropic hardening predominates in the CG alloy where the density of dislocation strongly increases during cyclic tests, kinematic hardening predominates in the UFG alloy, because of its limited capacity to store dislocations and its more heterogeneous plastic deformation. For a given plastic strain range, the UFG alloy has a shorter fatigue life than its CG counterpart, because of a much easier crack initiation, mostly from intermetallic particles. For a given stress range, it has a slightly higher life, due to a slower development of microcracks, which have a transgranular path in the largest grains, with some intergranular growth within the smallest grains.