Made available in DSpace on 2014-06-11T19:22:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-12-03Bitstream added on 2014-06-13T18:49:31Z : No. of bitstreams: 1 guimaraes_rfa_me_ilha.pdf: 2262303 bytes, checksum: 5b02ef57986a43b0710df7b64c4e2056 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A proposta deste trabalho é analisar o comportamento de transformadores de distribuição trifásicos após a recuperação estudando suas perdas elétricas fixas e variáveis tomando-se o transformador como uma unidade consumidora para demonstrar a viabilidade econômica da reforma, principalmente àquelas que não alteram o núcleo. Foram utilizados os ensaios de rotina de uma empresa recuperadora para uma importante concessionária de distribuição de energia. Este trabalho também faz uma recomendação sobre o descarte deste material segundo conceitos ambientais para uma melhor utilização dos recursos naturais. É importante mencionar o fato que muitos dos transformadores analisados operam a mais de 20 anos. A recuperação permite as concessionárias fornecer energia elétrica para consumidores residenciais e rurais de baixa renda mediante um pequeno investimento na construção de novas linhas de distribuição / The purpose of this paper is to analyze the behavior of three-phase distribution transformers when submitted to recovery, taking into consideration fixed and variable electric losses considering the transformer as a consumer unit to demonstrate the economical feasibility, especially those that do not modify the core. It has been used routine tests data obtained from a company that recover for an important power deliver. This paper also deals with the disposal of the material considering environmental concerns, for a better use of natural resources. It is important to mention the fact that many transformers have already operated for more than 20 years. The recover allows the deliver to provide energy to residential or rural low-income consumer through a low investment with the construction of new electric power grid

Sufficient rest breaks are needed for optimal performance in traditional workplaces, but it is unclear how working with a loosely structured work schedule impacts recovery. Students have temporal flexibility and serve as a good proxy for all groups who work unstructured work schedules. Since most students and employees use the weekend to recover, this study investigated the relationship between recovery experiences (i.e., psychological detachment, relaxation, and mastery) over the weekend and the state of being recovered on the following Monday. Further, the relationship between the state of being recovered on Monday and weekday performance indicators (i.e., task performance and personal initiative) was investigated. Data was collected over three consecutive weeks from a cohort of first-year university students (N = 106) using a quantitative diary study design. This study administered seven surveys (i.e., a personal data survey once, a pre-weekend survey three times, and a postweekend survey three times). After three weeks, 66 participants (N = 66) had completed all the surveys at the person level, yielding 148 matched observations at the week-level. Multilevel modelling showed that weekend relaxation positively predicted the state of being recovered on Monday. Weekend psychological detachment and weekend mastery experiences did not predict the state of being recovered on Monday, and the state of being recovered did not predict weekly personal initiative or weekly task performance. The theoretical and practical implications of this study are presented, as are limitations and suggestions for future research.

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Made available in DSpace on 2016-04-29T13:30:57Z (GMT). No. of bitstreams: 1 Andre Bruttin.pdf: 1591233 bytes, checksum: 4da52fc8d0402267f98bd1be8820120b (MD5) Previous issue date: 2012-05-18 / This is a social psychology thesis, in the work and organizational psychology area, which has as a main focus to develop a people management system focusing the promotion of health of workers in a recovered factory, based on the critical role of a psychologist inserted in it. For that I have used as a theoretical reference the social psychology of work and organizations and the psychology of sociohistorical perspective and as a methodological reference I have used the proposal of the theme field. The research was done in a recovered factory in Salto, state of São Paulo, Brazil, and had as the main result the implementation of a people management system which inverts the traditional polarity of work organization, leaving the most traditional that focus the capital behind to have the worker as the main focus in the work process. The program focusing the promotion of health implemented at Metalcoop, was based on five main axis. a) putting work to serve the worker, as we search that the management policies have the worker as the focus; b) promoting the human development through work, as we seek for developing actions from the worker´s point of view and not the organization; c) working policies of identity and identity policies searching projects capable of creating a new character, the partner-worker at the same time that we were promoting the identity personal projects within the organization; d) promoting the worker participation in the organization s decision-making process, aiming to widen the democratic participation in the organization at the same time as we were searching for the development of its critical vision in order to better use the already existing democratic spaces; e) occupational health, managing the work process to avoid those as elements to cause illness / Esta é uma tese de psicologia social, dentro do campo da psicologia organizacional e do trabalho, que teve como foco principal desenvolver um sistema de gestão de pessoas com foco em promoção de saúde do trabalhador em uma fábrica recuperada, a partir de uma atuação crítica do psicólogo inserido nas organizações. Para tanto utilizei como referencial teórico a psicologia social do trabalho e das organizações e a psicologia de perspectiva sócio-histórica e como referencial metodológico a proposta do campo-tema. A pesquisa foi realizada em uma fábrica recuperada localizada em Salto, São Paulo, e teve como principais resultados a implementação de um sistema de gestão de pessoas que inverte a polaridade tradicional da organização do trabalho, saindo do direcionador mais tradicional o capital e passando a ter no trabalhador o foco principal dos processos de trabalho. O programa com vistas a promoção de saúde implementado na Metalcoop, foi escorado em cinco eixos principais. a) colocar o trabalho a serviço do trabalhador, em que buscamos que as práticas e políticas de gestão tivessem o trabalhador como foco principal; b) fomentar o desenvolvimento humano através do trabalho, em que buscamos pensar ações de desenvolvimento a partir do trabalhador e não da organização; c) trabalhar políticas de identidade e identidades políticas, em que buscamos projetos que pudessem viabilizar um novo personagem, o sócio-trabalhador ao mesmo tempo em que fomentávamos os projetos pessoais de identidade dentro da organização; d) Fomentar a participação do trabalhador no processo decisório da organização, em que buscamos ampliar os espaços de participação democrática dentro da organização ao mesmo tempo em que buscávamos desenvolver a visão crítica do trabalhador, para que aproveitasse melhor os espaços democráticos existentes; e) saúde ocupacional, em que buscávamos fazer a gestão dos processos de trabalho evitando que fossem elementos geradores de adoecimento

Submitted by Secretaria Pós de Produção (tpp@vm.uff.br) on 2017-07-27T18:49:20Z No. of bitstreams: 1 D2016 - Fernanda Santos Araujo.pdf: 4147129 bytes, checksum: 0bf961dbb277d90118accdb0fb1996c9 (MD5) / Made available in DSpace on 2017-07-27T18:49:20Z (GMT). No. of bitstreams: 1 D2016 - Fernanda Santos Araujo.pdf: 4147129 bytes, checksum: 0bf961dbb277d90118accdb0fb1996c9 (MD5) / Esta tese propõe-se a analisar a gestão do trabalho pelo olhar da atividade em uma mina de carvão em luta pela autogestão, assim contribuindo com os estudos sobre as Empresas Recuperas por Trabalhadores no Brasil. Para elaborar esse ponto de vista recorremos à ergonomia da atividade, à perspectiva ergológica e à psicodinâmica do trabalho, nos valendo especialmente do que essas disciplinas/abordagens/perspectivas puderam oferecer a respeito do tema das competências e da dimensão coletiva da atividade. Um panorama do universo da mineração de carvão e das lutas históricas dos trabalhadores pela autogestão do trabalho e da produção também compuseram nosso referencial para a análise. Nossa ida a campo se apoiou na metodologia da Análise Ergonômica do Trabalho, enriquecida por outras influências fundamentais para adaptá-la à realidade estudada e aos nossos objetivos de pesquisa. O resultado dessa experiência mostra que a luta dos trabalhadores da COOPERMINAS pela autogestão do trabalho e da produção está longe de cessar. Se por um lado podemos afirmar que importantes conquistas foram alcançadas pela resistência cotidiana dos trabalhadores favorecendo o bem estar das pessoas e a eficácia da produção, por outro, apontamos uma série de limitações que decorrem das contradições impostas por um cenário adverso no qual a luta dos trabalhadores se configura como um projeto extremamente conflitivo. O olhar para a atividade, orientado pelos conceitos de competências e coletivos de trabalho, foi fundamental para a elaboração dessa análise. / The purpose of this thesis is analyze the work management from the perspective of the activity in a coal mine in a struggle for self-management, thus contributing to the studies about workers recovered companies in Brazil. To elaborate this point of view we use the activity ergonomics, the ergological perspective and the psychodynamics of the work, making use especially of what these disciplines / approaches / perspectives might offer about the subject of skills and collective dimension on activity. A panorama of coal mining universe and historical workers struggles for self-management also composed our benchmark for analysis. Our trip to the field of this study was based on the methodology of Ergonomic Work Analysis, enriched by other influences fundamental to adapt it to the reality studied and our research objectives. The result of this experiment shows that the struggle of COOPERMINAS workers for self-management is far from ceasing. On the one hand we can say that significant achievements have been made by the daily resistance of workers favoring the well-being of people and the efficiency of production, on the other, we point out a number of limitations arising from the contradictions imposed by an adverse scenario in which the struggle of workers is configured as a highly conflictive project. The look for the activity, guided by the concepts of skills and collective was essential to prepare the analysis.

Återskapade våtmarker är av stor vikt för den biologiska mångfalden och särskilt viktiga för hotade simfåglar. För att öka kunskapen kring hur faktorer som våtmarkers area, ålder och fiskförekomst påverkar simfåglar i återskapade våtmarker studerades fyra våtmarker i Tinnerö naturreservat, Linköpings kommun. Av speciellt intresse var svarthakedoppingen (Podiceps auritus). Antalet svarthakedoppingar i de studerade våtmarkerna hade en positiv utveckling under våtmarkernas första år. Dock minskade antalet svarthakedoppingar i området mellan år 2009 och 2011. År 2011, efter anläggandet av Ekängsdalsgångens våtmarker, stabiliserades antalet igen. Slutsatsen är att nyskapade, fiskfria våtmarker ger goda förutsättningar för hotade arter såsom svarthakedoppingen. Utöver detta undersöktes även de didaktiska möjligheter, utifrån Skolverkets ämnes- och kursplaner för biologi, som exkursioner erbjuder. / Restored wetlands are of great importance for biodiversity, and especially important for endangered waterfowl. In order to increase knowledge about how factors such as wetlands area, age, and fish occurrence affect waterfowl in restored wetlands four wetlands in Tinnerö nature reserve, Linköping municipality, were studied. Of special interest was the horned grebe (Podiceps auritus). The number of horned grebes in the studied wetlands had seen a positive development during the wetlands first years. Between 2009 and 2011, the number of horned grebes in the area declined. The numbers were stabilized in 2011, after the establishment of Ekängsdalsgångens wetlands. The conclusion is that newly created, fish-free wetlands provide good conditions for endangered species such as the horned grebe. In addition to this the study also examined the didactic opportunities, based on the curriculum for biology, which excursions offers.

Thesis (PhD) -- Macquarie University, Division of Society, Culture, Media & Philosophy, Department of Anthropology, 2006. / "December 2005". / Bibliography: leaves 327-357. / Characteristics of ritual abuse discourse -- A plethora of theorists (and of differences between them) -- Defining ritual abuse: differences, disputes and bad faith -- Allegations, investigations and trials -- Abuse accomodation and recovered memories -- Moral panic and witch hunt -- Witch craze -- Outsiders, accusations and obligations -- Accusations of ritual abuse in Australia -- Witches and pedophiles -- Conclusion. / Allegations of "ritual abuse" were first made in North America in the 1970s and early 1980s. It was claimed that an extremely severe form of sexual and physical child abuse was being perpetrated by Satanists or the devotees of comparably unorthodox religions. Perpetrators were often supposed to be invloved in other serious criminal activities. Allegations were subsequently made in Britain, Holland, Australia and New Zealand. The thesis examines the bitter debates that these claims provoked, including the dispute about whether ritual abuse "really happens". -- The thesis also contributes to the debate by providing some anthropological insights into why these strange and incredible claims were made and why they were accepted by certain therapists, officials, journalists and members of the public. It is argued that the panic over ritual abuse was a panic about what anthropologists know as "witchcraft" and the thesis makes this argument through an analysis of the events (mainly discursive events) of the panic. The thesis in particular takes up Jean La Fontaine's argument about the similarities between accusations of ritual abuse and those made against "witches" in early modern Europe and in non-Western societies. The similarities between the kinds of people typically accused of perpetrating ritual abuse and those accused of practising witchcraft are considered, with a special emphasis on those cases where accusations were made by adult "survivors" and where alleged perpetrators were affluent and of relatively high social status. The thesis examines how supposed perpetrators of ritual abuse were denied the social support properly due to them and how accusations--and the persecution that followed--achieved certain political, professional and personal ends for survivors and their supporters. -- The thesis also considers similarities between "crazed" witch hunting and the recent spread of the panic about ritual abuse throughout much of the English-speaking West. The peculiar panic about witch-like figures that occurred in Australia -- especially in NSW--is examined. The thesis shows how, at a time when Australians had become very sceptical about claims of ritual abuse, activists were able to incite and affect the latest of a succession of homophobic panics in Australia. / Mode of access: World Wide Web. / 357 leaves ill

Made available in DSpace on 2016-06-02T20:38:28Z (GMT). No. of bitstreams: 1 5873.pdf: 18361989 bytes, checksum: aa84d5e2b78c768ce7e17cd33b8253c9 (MD5) Previous issue date: 2014-03-19 / Universidade Federal de Minas Gerais / The context generated by the productive restructuring associated with financial crises and changes in the Brazilian economy in the late 1990s led to the collapse of many companies and resulted in increased unemployment and increasing instability and insecurity of labor relations. Thus, workers sought other forms of livelihood, including the associated work. ANTEAG (Associação Nacional de Trabalhadores em Empresas de Autogestão e Participação Acionária) [National Association of Self-Management Companies Workers] emerged in this context, with the goal of supporting groups of workers to unite and take control of bankrupt factories in which they worked, preserving their jobs. So, the first recovered factories emerged. At this time, the movement of the Solidarity Economy also begins to grow, and Unisol Brazil (Central de Cooperativas e Empreendimentos Solidários) [Central of Cooperatives and Solidary Enterprises] arises to support various types of solidary economic enterprises, including the recovered factories. Thus, the purpose of our research was to make a general analysis of the current situation of recovered factories in Brazil. To do this, we return to some of the pioneering experiments of recovered companies. Our goal was to understand if and how cooperative and self-managed values are present in these enterprises today. So, we performed a literature review of case studies about recovered factories and visited several experiences of this type, where we conducted observations and interviewed leaders and workers, using semi-structured scripts. In addition, we seek to look at our subject from an international perspective, so we visited Argentina and France. In general, we note that, although the ideals of cooperatives and self-management remain in the speeches of many workers, their enforcement encounters many obstacles in practice. In other words, to be viable, recuperated factories face many pressures in the market, which eventually modify some of your initial goals. / O contexto gerado pela reestruturação produtiva associada às crises financeiras e mudanças na economia brasileira no final dos anos 1990 provocou a falência de muitas empresas e resultou em aumento do desemprego e precarização das relações de trabalho. Assim, os trabalhadores foram levados a buscar outras formas de obter renda, entre as quais, o trabalho associado. A ANTEAG (Associação Nacional de Trabalhadores em Empresas de Autogestão e Participação Acionária) surgiu nesse contexto, com o objetivo de apoiar grupos de trabalhadores a se unirem e assumirem o controle das fábricas falidas onde trabalhavam, preservando seus postos de trabalho. Surgiram, então, as primeiras fábricas recuperadas . Nesse momento, também passa a ganhar força o movimento da Economia Solidária, e é criada a UNISOL Brasil (Central de Cooperativas e Empreendimentos Solidários), que passa a apoiar diversos tipos de empreendimentos econômicos solidários, entre os quais as fábricas recuperadas. Assim, a proposta de nossa pesquisa foi fazer um balanço da situação atual das fábricas recuperadas no Brasil, a partir do retorno a algumas experiências pioneiras de recuperação de empresas. Nosso objetivo foi verificar se e em que medida os valores cooperativos e autogestionários se fazem presentes nesses empreendimentos até hoje. Para tanto, realizamos uma revisão bibliográfica de estudos de caso sobre as fábricas recuperadas e visitamos diversos empreendimentos desse tipo, onde realizamos observações e entrevistamos lideranças e trabalhadores. Além disso, buscamos olhar para nosso tema à luz de uma perspectiva internacional, a partir de visitas à Argentina e a França. De maneira geral, notamos que, embora os ideais do cooperativismo e da chamada autogestão permaneçam presentes nos discursos de muitos trabalhadores, sua efetivação encontra muitos obstáculos na prática, uma vez que, para serem viáveis, as fábricas recuperadas enfrentam muitas pressões do mercado, que acabam por modificar alguns de seus objetivos iniciais.

Les papiers récupérés sont de plus en plus utilisés pour fabriquer du papier recyclé de haute blancheur. La ligne de recyclage inclut entre autres les opérations de désencrage et de blanchiment, le peroxyde d’hydrogène (H2O2) étant le réactif blanchissant le plus utilisé en milieu alcalin (stade P). Son efficacité est toutefois limitée car il est peu ou moyennement réactif sur les fonctions azoïques des colorants papetiers. L’objectif de cette étude était donc d’améliorer l’élimination des colorants azoïques lors d’un stade P.L'amélioration du stade P utilisé en délignification des pâtes chimiques a fait l’objet de nombreuses études. En particulier, l’activation ou la catalyse de H2O2 par des complexes cuivre(II)-phénanthroline (Cu-Phen) présentant des résultats très intéressants, des essais de blanchiment de pâtes désencrées et colorées ont été entrepris. Le système H2O2/Cu-Phen s’est également révélé efficace en décoloration, mais le mécanisme n’avait alors pas été étudié.L’objectif de ce travail était donc de déterminer dans quel cas et pourquoi le complexe cuivre(II)-phénanthroline était capable d’améliorer la décoloration de fibres cellulosiques colorées. Trois questions intermédiaires se sont posées : (1) quel effet Cu-Phen a-t-il sur le colorant isolé? (2) la décoloration d’une pâte de fibres colorées par H2O2 est-elle améliorée par Cu-Phen? (3) par quel mécanisme la décoloration est-elle rendue plus efficace?Le travail a donc été organisé en trois études : (1) caractérisation des colorants sélectionnés et du complexe en l’absence d’oxydant et examen des interactions entre les deux, (2) étude et optimisation paramétrique de H2O2/Cu-Phen pour la décoloration de pâtes colorées, (3) étude du mécanisme d’oxydation en milieu aqueux, en l’absence et en présence de cellulose.Ce travail s’est appuyé sur de nombreuses techniques analytiques (spectroscopies RMN, FTIR, UV-vis et RPE ; ESI-MS) et des calculs de spéciation. Il a prouvé que le complexe Cu-Phen en présence de H2O2 améliorait la décoloration de colorants azoïques, avec ou sans fibres cellulosiques. Il a été mis en évidence que la phénanthroline agissait comme un stabilisant permettant d’ajuster la solubilité, la stabilité et le potentiel d’oxydo-réduction du cuivre(II), mais qu’elle n’était pas indispensable. De plus, le pH du milieu est également un paramètre clé, jouant à la fois sur l’activité du complexe et sur ses interactions avec le substrat. Le substrat (colorant mais aussi cellulose) s’est trouvé fortement dégradé par ce système H2O2/Cu-Phen. Les résultats corroborent l’hypothèse de l’oxydation du substrat par les radicaux hydroxyles issus de la décomposition de H2O2, plutôt que par H2O2 lui-même, ce mécanisme étant l’une des étapes d’un cycle catalytique.La recherche menée et les résultats obtenus sont applicables non seulement à l’amélioration du blanchiment des pâtes désencrées, mais aussi au traitement d’effluents colorés dans les industries du papier et du textile. / Today, recovered papers are reused for the manufacture of bright paper after deinking and fiber bleaching, which generally starts with an alkaline hydrogen peroxide stage (H2O2). However, the efficiency of H2O2 is often limited due to its low reactivity on the azo groups of paper dyes contained in recovered papers. The goal of this study was to improve the removal of these azo dyes by H2O2.The improvement of H2O2 bleaching has been studied thoroughly in the context of chemical pulp delignification. In particular, the activation or catalysis of H2O2 by copper(II)-phenanthroline complexes (Cu-Phen) was found to be very effective. This inspired a preliminary bleaching study on deinked pulp and dyed pulp, and resulted in significant improvement of dye removal, which gave birth to our project.The purpose of this work was to determine to what extent copper(II)-phenanthroline could improve the hydrogen peroxide color-stripping of dyed cellulosic fibers, and how. To answer this question, three intermediate issues were addressed: (1) does Cu-Phen alone have an effect on the dye? (2) does Cu-Phen improve the color-stripping of a dyed pulp by H2O2? (3) how does the H2O2/Cu-Phen system enhance the dye-color-stripping efficiency?This work was thus divided into three studies: (1) the selected dyes and the complex were characterized in the absence of any oxidant and the interactions between the two were examined, (2) the H2O2/Cu-Phen system was applied on two dyed pulps to assess their color-stripping potential and to attempt to optimize it, and (3) the oxidation mechanism was investigated via trials in aqueous solution, with and without cellulose.Using several analytical techniques (NMR, FTIR, UV-vis and EPR spectroscopy; ESI-MS) and speciation calculations, this work proved that the Cu-Phen complex enhanced H2O2 for the color-stripping of azo dyes, with and without fibers. It also provided evidence that phenanthroline acted as a stabilizer to adjust the solubility, stability and redox potential of copper(II), but may not be indispensable. The substrate (dyes but also cellulose) was strongly degraded by the H2O2/Cu-Phen system. The results of the mechanistic study supported the hypothesis of substrate oxidation by radicals produced via decomposition of H2O2 rather than by hydrogen peroxide itself. This mechanism, strongly dependent on the pH, is probably part of a catalytic cycle.Finally, along with further research proposed based on our conclusions, this thesis should contribute to the improvement of deinked pulp bleaching as well as wastewater treatment in the pulp and textile industries.

For 2010 the European Union has a goal to increase the share of renewable energyware to 12%. For 2020 the goal is 20%. One of visions to reach this is to raise the share of solid biofuels. Politicans all over ideologycal spectrum collectively propagate, that farming and waste management sector industry has developed ways to produce solid recovered fuels with reliable qualities, which are used successfully regarding economic and environmental aspects. One of prerequisites to reach this will be to achieve the standardization of solid biofuels. This leads to a need for flexible market, which is attainable only by common understanding concerning terminology, sampling and test methods. European energetically non-intensive industries and settlements are looking for ecologically friendly alternative fuels in order to save fossil fuels. And by doing so, enforce the development of fitting technical norms to facilitate the meeting of offer and demand for the product. Pressed biofuels like pellets are today playing the key role for the small house market as well as for large scale coal substitution in local power plants. The thesis is a part of scientific contemplation MSM 06/2/4a solved by professors S.Kužel and L.Kolář and is trying to answer the question: ``Is combustion of solid biofuels ecologically friendly?{\crqq}