Ce travail de thèse porte sur l’étude des mécanismes et des bilans de transfert des pesticides vers les cours d’eau sur deux bassins versants agricoles emboités, de tailles différentes en Gascogne (Sud Ouest de la France) : la Save à Larra (1110 km2).et le Montoussé (3,28 km2) à Auradé. Dans cette région, les pratiques d’une agriculture intensive conduisent à des risques importants pour les ressources en eau, notamment pendant les périodes de crue. C’est pour cela que nous avons porté une attention particulière dans cette étude à ces événements au cours desquels une grande quantité de contaminants sont transportés par les cours d’eau. Quatorze molécules de pesticides (herbicides et fongicides) largement utilisées sur ces bassins versants ont été étudiées grâce à un échantillonnage intensif, notamment en périodes de crue, durant deux années hydrologiques (2007/2008 et 2008/2009). La majorité des molécules étudiées présentent des concentrations qui dépassent les limites autorisées par l’Union Européenne pour l’eau potable (0.1 μg.L-1 pour chaque molécule et 0.5 μg.L-1 pour l’ensemble des molécules), notamment en périodes de crue. L’analyse des hystérésis mises en évidence sur les relations entre les concentrations (pesticides, MES, COD, POC) et les débits du cours d’eau permet de mieux comprendre les mécanismes de transfert des pesticides et de leurs paramètres de contrôle. Ces hystérésis montrent pour un même débit des concentrations différentes en montée et en descente de crue ; elles peuvent être dextres (sens des aiguilles d’une montre) ou senestres (sens inverse) suivant l’origine des molécules et l’écoulement responsable de leur transfert des sols vers les eaux. C’est pourquoi nous avons procédé dans cette étude à une séparation des différentes composantes (ruissellement superficiel, écoulement hypodermique, écoulement de nappe) de l’écoulement fluvial pour mieux comprendre la dynamique de transferts des pesticides et de leurs paramètres de contrôle. On peut ainsi mettre en évidence des relations positives entre MES, COD, COP ou certaines molécules de pesticides et les débits des écoulements de surface (ruissellement superficiel ou écoulement hypodermique suivant les caractéristiques physico-chimiques des molécules). Les calculs de flux des différents pesticides exportés par les cours d’eau montrent que 60 à 90% (suivant les molécules) des transports annuels se font durant les épisodes de crue. Les flux spécifiques (masse exportée par unité de surface) calculés sont plus importants sur le bassin versant de la Save que sur celui du Montoussé et les relations flux spécifiques-débits mettent en évidence des concentrations plus élévées sur la Save où l’utilisation des pesticides est globalement plus importante que sur le Montoussé où les pratiques sont raisonnées. L’analyse des pesticides dans l’eau filtrée et non filtrée nous a permis d’estimer la distribution de chaque molécule entre les phases particulaires et dissoutes (Kd). De plus, les valeurs de flux calculés pour chaque crue nous ont permis d’estimer un Kd moyen pour chaque molécule. Ces valeurs de Kd présentent une très bonne relation avec les valeurs de Kow (coefficient de partage octanol-eau) extraites de la littérature. De même, les pourcentages calculés de chaque pesticide exporté sous forme particulaire sont aussi très bien corrélés au Kow de chaque molécule. / The mechanisms of pesticides transport to stream flow were studied in two agricultural nested catchments of different size in Gascogne region (South West of France): the Save river basin at Larra (1110 km2) and the Montoussé experimental watershed at Auradé (3.28 km2). The intensive agricultural practices used in this region lead to an important risk for water resources by pesticides, especially during storm events. This is why we have paid special attention on storm events when a large quantity of contaminant was transported during hydrological periods. Fourteen molecules of pesticides (herbicides and fungicides) were investigated during the study period. Both of these groups are widely used for agricultural purposed in these catchments. The results achieved over the two years monitoring (2007-2009) enable us to emphasize the principal processes, implied in pesticide transfer on these agricultural catchments. The majority of compounds are detected during storm runoff events. And, the average concentrations of some pesticides are exceeded at the authorization limit of the European Union for pesticide concentrations in drinking water (0.1 µg.L-1 for individual pesticides and 0.5 µg.L-1 for total pesticides). To better understand the mechanisms of pesticide transport hysteresis, patterns on the concentration-discharge relationship (result of different concentration of pesticides in rising and falling limb of storm) were studied. However, clockwise or anticlockwise hysteresis patterns could be observed for some molecules of pesticide and their controlling factors such as dissolved organic carbon (DOC), particulate organic carbon (POC) and total suspended matters (TSM) according to their transfer dynamic in the catchment. We proceeded with hydrograph separation of the main stormflow components (surface runoff, subsurface flow and groundwater) so that the main pesticide routing could be traced for its soil-river transfers. We also came to the conclusion that there is a positive relationship between riverine TSM, DOC and pesticide, concentrations and the discharges of surface or subsurface runoffs according to pesticide properties. Pesticide flux calculation shows between 60 to 90% of the molecule transport takes place during storm periods. Specific flux calculation also demonstrated the higher flux value in Save catchment than in Aurade with higher pesticide concentration for a given specific discharge. The latter result may be due to the more consumption of pesticide in Save catchment. The analyses of pesticides both in filtered and unfiltered water enabled us to estimate the distribution of pesticides into particulate and dissolved phases. Moreover, the pesticide flux values allow calculating average partition coefficients kd between dissolved and particulate fractions which present good relationship with Kow values (octanol-water) extracted from literature. The percentage of each pesticide transported as particulate forms is also well correlated to Kow.

Dissolved organic matter (DOM) is the largest pool of organic carbon in aquatic systems and an important component of the global carbon cycle. Large amounts of DOM are decomposed within lakes, resulting in fluxes of CO2 and CH4 to the atmosphere. Therefore, there is a considerable interest in understanding the controls of DOM decomposition in freshwaters. There is evidence that in lakes intrinsic controls related to DOM composition are of primary importance, yet our knowledge about molecular drivers of DOM degradation is limited. This thesis addresses the link between chemical composition and reactivity of lake DOM by applying an experimental approach, molecular-level DOM characterization, and kinetic modeling of DOM decay. The first study shows that photoinduced transformations and partial removal of colored aromatic components of DOM have profound effects on DOM degradation kinetics, mediated by the shifts in the relative share of rapidly and slowly degrading DOM fractions. Two following studies estimate exponential decay coefficients for each individual molecular formula identified within bulk DOM. A continuous distribution of exponential decay coefficients is found within bulk DOM, which directly corroborates the central and previously empirically untested assumption behind the reactivity continuum model of DOM decay. Further, individual decay rates are evaluated in connection to specific molecular properties. On average, highly unsaturated and phenolic compounds appear to be more persistent than compounds with higher aromatic content (plant polyphenols and polycondensed aromatics), and aliphatic compounds demonstrate the highest decay rates. The reactivity of aromatics additionally increases with increasing nominal oxidation state of carbon. Molecular analysis further indicates that increasing reactivity of DOM after UV exposure is caused by disintegration of supramolecular complexes. Study IV shows that changes in relative proportion of terrestrial versus algal DOM control degradability of DOM through seasons. Under ice, when algal-derived DOM is maximally depleted, DOM degradation potential converges to similarly low levels, regardless of lake type (productive or humic), and bacterial respiration primarily relies on terrestrial carbon. This suggests a general pattern of baseline metabolism across boreal lakes. I conclude that DOM is a dynamic reactivity continuum and a tight link exists between DOM behavior and compositional properties.

Introdução: O professor enfermeiro é um profissional que tem um importante trabalho transversal na área do ensino de enfermagem. Exercendo a docência universitária, seu trabalho não se reduz ao campo didático-pedagógico, mas pressupõem ofícios com distintos ramos do saber, o que exige instrumentalização diversificada, com o objetivo de formar o profissional enfermeiro para o mundo do trabalho. Todavia, sob a hegemonia contemporânea da lógica neoliberalista, a formação do enfermeiro pode estar mais articulada ao mercado de trabalho, o que concebe um profissional proativo e flexível para a realização de multitarefas. Com o advento do neoliberalismo, a universidade pública tornou-se uma instituição de altíssimo grau de complexidade, um tipo sofisticado e diversificado de organização social, sendo a carreira docente compelida ao paradigma do produtivismo acadêmico. Mediante o interesse de estudar a formação docente e o exercício da docência no ensino de enfermagem de professores enfermeiros universitários atuantes em uma universidade pública e debruçando-se sobre as leituras científicas, compreendeu-se o termo formação docente sob uma visão ampliada, denominado nessa perspectiva desenvolvimento profissional docente (DPD). O DPD se constrói ao longo da carreira docente e pode ser influenciado pela instituição de ensino e contextos políticos. Considerando-se a influência da política neoliberalista sobre a universidade pública brasileira, partiu-se da premissa que o DPD de professores enfermeiros universitários tem profunda relação com o exercício da docência no ensino de enfermagem. Assim, essa pesquisa respondeu a seguinte questão: Como acontece o DPD de professores enfermeiros universitários atuantes em uma universidade pública? Objetivo: Analisar o desenvolvimento profissional docente de professores enfermeiros universitários atuantes em uma universidade pública. Percurso metodológico: Estudo de caso naturalístico, descritivo e exploratório de abordagem qualitativa, realizado junto à Universidade de São Paulo (USP), no curso de Bacharelado e Licenciatura em Enfermagem da Escola de Enfermagem de Ribeirão Preto (EERP). Obtiveram-se dados de fontes primária e secundária. Para a fonte primária utilizou-se como instrumento de coleta de dados uma entrevista semiestruturada, e para a secundária a observação do trabalho docente e a consulta em documentos, os quais, o Curriculum lattes dos professores entrevistados, os planos de ensino das disciplinas ministradas por estes, e o projeto pedagógico do curso. As entrevistas e as observações do trabalho docente foram realizadas pela própria pesquisadora, entre os meses de setembro a dezembro de 2016. As observações aconteceram posteriormente à realização das entrevistas, mediante a técnica observação do tipo observador como participante, sendo descritas em um diário de campo, o que totalizou 200 horas de práticas pedagógicas observadas. A inclusão dos participantes no estudo caracterizou-se por amostragem intencional, obedecendo aos seguintes critérios: ser professor enfermeiro em Regime de Dedicação Integral a Docência e à Pesquisa; ter atuado ou estar atuando em alguma (s) das 23 disciplinas anuais ou semestrais que estavam sendo ofertadas para os graduandos do primeiro ao quinto ano do curso, no segundo semestre letivo do ano de 2016; e ter experiência na docência de no mínimo três anos. Os dados da entrevista semiestruturada foram organizados em quatro categorias temáticas, e analisados através da análise de conteúdo, na modalidade de análise temática. Na análise utilizou-se o referencial teórico de Carlos Marcelo García. A pesquisa somente aconteceu após aprovação por Comitê de Ética. A participação dos professores enfermeiros foi voluntária após aceitação e assinatura do termo de consentimento livre e esclarecido. Foi mantido o sigilo dos participantes e a garantia do anonimato quanto às informações adquiridas. Resultados, análise e discussão: A compreensão sobre as relações que envolvem o professor enfermeiro, e a universidade pública, o currículo, o ensino de enfermagem e a profissionalidade, possibilitaram analisar o desenvolvimento profissional docente desse grupo específico. Participaram da pesquisa 30 professores enfermeiros, com o predomínio de mulheres adultas, com tempo de formação acadêmica superior a 10 anos e experiência profissional na docência e na assistência de enfermagem há mais de cinco anos. A análise e discussão foram construídas em quatro categorias temáticas: A organização da universidade pública como elemento inerente ao desenvolvimento profissional docente; O currículo como elemento intrínseco ao desenvolvimento profissional docente; O desenvolvimento profissional docente de professores enfermeiros universitários, e as expectativas da profissão quanto as oportunidades de cursos de formação e carreira docente; e o desenvolvimento profissional docente de professores enfermeiros universitários, e as atividades acadêmicas e didáticas que envolvem o ensino de enfermagem. Compreendeu-se que os professores enfermeiros universitários entendem a função primordial da universidade pública como instituição social, contudo consentem com a sua função hegemônica contemporânea enquanto organização social, e percebem a sua estrutura física como elemento contribuinte para o DPD. Evidenciou-se o currículo do curso como elemento de instigação e divergências entre os professores, assim como, a necessidade de haver formação e o compartilhamento de discussões sobre o desenvolvimento do mesmo. Os professores enfermeiros envolvem-se com o processo de ensinar; exercem docência no ensino de enfermagem desempenhando suas práticas pedagógicas em instalações apropriadas; e têm dificuldades quanto à disponibilidade de tempo para preparar antecipadamente suas atividades de ensino. Apresentam discordância em relação à articulação entre projeto pedagógico, planos de ensino e o desenvolvimento de práticas pedagógicas; articulam o ensino, a pesquisa e a extensão; e demonstraram discrepâncias quanto ao uso de estratégias de ensino e de referenciais teóricos para fundamentar o preparo de suas práticas pedagógicas. Por fim, os professores enfermeiros compreendem o DPD como elemento que abarca a carreira docente e que influencia positivamente e negativamente sobre o exercício da docência no ensino de graduação em enfermagem, e apontam a necessidade de ter na universidade indicadores de avaliação, que incentivem a capacitação do professor na área do ensino. Considerações Finais: O desenvolvimento profissional docente de professores enfermeiros universitários pode exercer influência sobre o exercício da docência, beneficiando ou não o ensino de enfermagem. Espera-se com este estudo ter possibilitado reflexões sobre o exercício da docência de professores enfermeiros universitários mediante a perspectiva da visão ampliada da formação docente, assim como ter contribuído para modificações junto ao contexto do ensino de enfermagem. Em tempos de neoliberalismo recomenda-se ampliar o campo de discussão e pesquisa sobre o DPD, envolvendo a educação em enfermagem em universidades públicas / Introduction: The nurse professor is a professional with an important transversal job in nursing teaching. Besides being university professors, their work is not only didactic-pedagogical, but also in distinct positions in the realm of knowledge, what demands diversified instrumentation aiming to enable the professional nurse to work in the job market. Nevertheless, under the contemporaneous hegemony of neoliberal logic, the nurse formation is found more articulated to the job market, what conceives a proactive professional to multitask. With the advent of neo-liberalism, the public university became an extremely complex institution; a sophisticated and diversified social organization where the career in teaching is compelled to the paradigm of academic productivity. Owing to the interest in studying the teacher formation and teaching practice in nursing by university nurse professors working in a public university, and based on extensive scientific reading, the term teacher formation was better understood within a broader perspective as teacher professional development. The teacher professional development is built along with a career in teaching which can be influenced by the educational institution and political contexts. Considering the influence of neo-liberalist politics on the Brazilian public university, it was noted that the teacher professional development of university nurse professors has a deep relation with the teaching practice in nursing. Hence, this research answered the following question: How is the teacher professional development of university nurse professors working in a public university? Objective: Analyze the teacher professional development of university nurse professors working in a public university. Methodology: Study of a naturalistic case, descriptive and exploratory with a qualitative approach carried out along with São Paulo University (USP), in a nursing college course leading to a Bachelor of Education degree from Ribeirão Preto nursing school (EERP). Therefore, primary and secondary source data was obtained. For the primary source data collection a semi-structured interview was carried out, and for the secondary source data collection, teacher practice observation and documentation verification were chosen, which comprises the analysis of the Curriculum Lattes of the interviewed teachers, teaching practice plans of the ministered subjects and the pedagogical project of the course. The interviews and teacher practice observations were performed by the researcher between September and December 2016. The observations were posterior to the interviews by means of participant observer technique being depicted in a field diary, what totaled 200 hours of observed pedagogical practice. The participants\' inclusion in the study characterized by intentional sampling complied with the following criteria: being a nurse professor in Full Time Dedication Regime to the Teaching and Research; having worked or been working in one or some of the 23 annual or semi-annual disciplines which were being offered to the graduate students of the first and fifth year of the course in the second semester of the school year of 2016; having experience in teaching of at least three years. The semi-structured interview data was organized in four thematic categories and verified through content analysis in the thematic analysis modality. In the analysis, Carlos Marcelo Garcia\'s theoretical reference was used. The research was put into execution after the approval of the Ethics Committee. The nurse professors had a voluntary participation after acceptance and signature of the agreement term free and elucidated. Moreover, the secrecy of the applicants was maintained and the anonymity of the information gathered guaranteed. Result, analysis and discussion: The understanding about the relationship between the nurse professor and the public university, the curriculum, the teaching in nursing and professionalism permitted the analysis of the teacher professional development of this specific group. Thus, 30 nurse professors participated in the research with the preponderance of adult women, college graduated for over 10 years with professional experience in teaching and nursing assistance for over 5 years. The analysis and discussion were built in four thematic categories: - The organization of the public university as an inherent element to the teacher professional development; - The curriculum as an intrinsic element to the teacher professional development; - The teacher professional development of university nurse professors and the profession\'s expectations regarding graduation course opportunities and career in teaching; - The teacher professional development of university nurse professors and the didactic-academic activities that involve the teaching in nursing. It was inferred that the university nurse professors comprehend the primordial function of the public university as a social institution. Nonetheless, they consent with their contemporaneous hegemonic position while social organization, and perceive the university material structure as a contributing factor to the teacher professional development. In addition, the curriculum was noted as an instigating and diverging element among the professors, they felt the necessity of educating themselves and sharing ideas about its development. The nurse professors get involved in the teaching process, teach nursing executing their pedagogical practices in appropriate environments, but they have difficulty as for time availability to prepare their teaching activities beforehand. The group presents disagreement regarding articulation between pedagogical project, teaching plans and pedagogical practice development. Furthermore, they coordinate teaching, the research and extension, but demonstrate discrepancies concerning teaching strategy use and theoretical references to fundament their pedagogical practices. Lastly, the nurse professors understand the teacher professional development as an element that encompasses the teaching career and that influences positively or negatively the teacher practice in the nursing graduation. The group also utters the need of assessment indicators at the university which motivates the empowerment of the professor in the teaching area. Final Considerations: The teacher professional development of university nurse professors can influence the teaching practice, benefitting or not the nursing education. It is expected that this study has fomented reflections about the teaching practice of university nurse professors under a broader perspective of the teacher formation, as well as having contributed to modifications in the field of nursing teaching. In neo-liberalism times, it is recommended that the discussion field and the teacher professional development research be expanded involving nursing education in public universities

Made available in DSpace on 2016-04-04T18:30:01Z (GMT). No. of bitstreams: 1 Aurea Lucia Magalhaes Cardoso.pdf: 1484578 bytes, checksum: f28a47fce4b565618c130682c2366c38 (MD5) Previous issue date: 2014-02-26 / The present study aimed to analyze the role of language in its highest psychological function in mediating the formation of indigenous teaching process, seeking to understand their influence on the way of being and acting of individuals and the processing and maintenance of culture. Through the indicators of meaning, we seek to understand the aspects involved in training for the teaching that takes place mainly with non-native teachers, using the English language as a mediator of the process. This study is located within the School Psychology spectrum, and adopted as a theoretical and methodological contribution to Historic-Cultural Psychology,whose main representative Vigotski. The context researched was from the Course Teaching Indigenous Tam?'kan in the State of Roraima, and the form of construction of the information with the students in classroom were observed and semi- structured interviews with 10 students of the course, subjects in this study and three interviews with three leaders of the course in question, which we call informants . The process that analyzing elects contextual clipping that participants tall about experience as a guiding principle of our postulations and focusing on family, school life, training in teaching of professional activities. The results indicate positive meaning about teaching profession and the great appreciation of teachers who are committed and able to transform the reality they experience in educational communities as well as community action and themselves. As a result, it was found that the settings of meanings about teaching are forged by numerous contradictions experienced by students from an early age, embracing the influence of history and cultures that permeate their experiences and life. These contradictions descends from attribution that indigenous community and society give the teachers on the one hand, and the community and society they collect of these same professionals on the other hand, such as knowing different themes; remain committed to their communities, to have mastery of the indigenous language and strive for building habits and universal behavior. / A presente pesquisa teve por objetivo analisar o papel da l?ngua enquanto fun??o psicol?gica superior na media??o do processo de constitui??o da doc?ncia ind?gena, buscando compreender sua influ?ncia no modo de ser e agir dos sujeitos e na transforma??o e manuten??o da cultura. Por meio dos indicadores de sentidos, buscamos compreender os aspectos implicados na forma??o para o magist?rio, que se realiza em grande parte por professores n?o ind?genas, utilizando-se da l?ngua portuguesa como mediadora do processo. Este estudo se localiza dentro do espectro da Psicologia Escolar, e adotou como aporte te?rico-metodol?gico a Psicologia Hist?rico-cultural, que tem como principal representante Vigotski. O contexto da pesquisa foi o Curso Magist?rio Ind?gena Tam? kan, no Estado de Roraima, e a forma de constru??o das informa??es com os estudantes foram observa??es de aulas e dez entrevistas semiestruturadas com os estudantes do curso, sujeitos desta pesquisa e tr?s entrevistas com tr?s dirigentes do curso em quest?o, os quais denominamos de informantes. Como procedimento de an?lise, elegemos recortes contextuais de que participam os sujeitos tomando a viv?ncia como eixo norteador de nossas postula??es e focalizando a fam?lia, a vida escolar, a forma??o no magist?rio e a atividade profissional. Os resultados sinalizam sentidos positivos sobre a profiss?o de professor e a grande valoriza??o da doc?ncia como a??o compromissada e capaz de transformar a realidade educacional que vivenciam nas comunidades, assim como a pr?pria comunidade e a si pr?prios. Ainda como resultados, constatou-se que as configura??es de sentidos sobre a doc?ncia s?o forjadas em meio a in?meras contradi??es vivenciadas pelos estudantes desde muito cedo, abarcando a influ?ncia da hist?ria e das culturas que permeiam suas experi?ncias e viv?ncias. Essas contradi??es derivam da atribui??o que a comunidade e a sociedade ind?gena conferem aos professores, por um lado, e da cobran?a desta mesma comunidade e sociedade a estes profissionais, tais como: conhecer diferentes temas, manter o compromisso com suas comunidades. ter o dom?nio da l?ngua ind?gena e primar pela constru??o de h?bitos e condutas universais.

Made available in DSpace on 2016-04-04T18:30:07Z (GMT). No. of bitstreams: 1 Magda Machado Ribeiro Venancio.pdf: 3761943 bytes, checksum: 075d3e05b292777f8f4dcef14aab04e5 (MD5) Previous issue date: 2016-02-15 / The following research was derived from a participative study and with the theoretical and methodological contribution from the historical-cultural psychology had as its goal to investigate the influence of activities which have ethics and aesthetics as its base. The goal was to change the student s vision about the humanizing dimension of one s profession in a teacher s initial education s course. Thirty fifth semester pedagogy students from a night course in a private College in S?o Paulo state took part in this research. Mediator artistic materials, especially music, were used as a psychological instrument to promote critical reflexion. The data was collected in four interventional situations in which the participants produced drawings and critical texts. The observations of the situations which involved the use of the materials have been registered in the Field Journal. The reading from the produced material including the Field Journal s content resulted in information that was gathered within a significant nucleus. This promoted knowledgeable understanding in regards to teaching and work which is related to teaching. All of which were configured by the participants. The research has revealed that affectionateness assumes prevalence in the way the future teachers will conceive their teaching skills adopting the view that teaching is still seen as a mission, that welcomes the pain and attenuates the social exclusion besides evincing the appropriation of the education s official speech in order to justify the importance of the school education. / A presente pesquisa, de natureza, com o aporte te?rico-metodol?gico da psicologia hist?rico-cultural teve como objetivo investigar a influ?ncia de atividades que t?m como base a ?tica e a est?tica para a amplia??o de vis?o dos estudantes sobre a dimens?o humanizadora de sua profiss?o que vise ? doc?ncia cr?tica em um curso de forma??o inicial de professores. Participaram da pesquisa trinta alunas do quinto semestre do per?odo noturno de um curso de Pedagogia, de uma Faculdade privada, de uma cidade do interior do Estado de S?o Paulo. Materialidades art?sticas mediadoras, em especial a m?sica, foram utilizadas como instrumento psicol?gico promotor de reflex?es cr?ticas. Os dados foram obtidos em quatro situa??es interventivas, nas quais as participantes produziram desenhos e textos escritos. Foram registradas em Di?rio de Campo as observa??es das situa??es que envolveram o uso das materialidades. A leitura do material produzido e do conte?do dos Di?rios de Campo resultou em informa??es que foram agrupadas em n?cleos de significa??o, possibilitando a aproxima??o dos sentidos sobre a doc?ncia e sobre o trabalho docente, configurados pelas participantes. A pesquisa revelou que a afetividade assume preval?ncia no modo de conceber a doc?ncia pelos futuros professores; que a doc?ncia ainda ? vista como miss?o, que acolhe a dor e atenua a exclus?o social, al?m de evidenciar a apropria??o do discurso oficial da educa??o para justificar a import?ncia da educa??o escolar e da doc?ncia.

Made available in DSpace on 2016-04-04T18:33:20Z (GMT). No. of bitstreams: 1 ADELIR APARECIDA MARINHO DE BARROS.pdf: 1605388 bytes, checksum: 8a4be0423f45ce8f53a13acb21056ec3 (MD5) Previous issue date: 2015-02-19 / This research aimed to identify which of teaching knowledge is mobilized by the Early Childhood Education teachers in the development of teaching practices and analyze this revealed knowledge and mobilized by teachers of this phase in relation to the educational needs of children aged four months to five years and eleven months age. In characterizing the plurality of teacher knowledge, according to Dermeval Saviani (2009), they are of Attitudinal knowledge, Critical-Contextual, specific, pedagogical and didactic-Course. However, in this study, among them, was elected as cutout for analysis, Didactic Know-Curricular and Pedagogical Knowledge. For this analysis, we selected episodes of the pedagogical practices of four teachers, subjects in this study. The study was based on qualitative research, whose theoretical and methodological framework was characterized in the historical-cultural perspective approach in teaching history-criticism. To collect empirical data, we used to: two questionnaires applied to one direction of the two selected school units and other applied to teachers of these schools, with a view to the selection of research subjects, on-site observations of the pedagogical practices of teachers of Education Children and semi-structured interviews. As a result of research in the analysis of the observed episodes, proved the Didactic-Curricular knowledge and pedagogical gifts in the context of pedagogical practices of teachers, in which human development concepts are inserted described by Vygotsky, ie the social experience and the historical experience. It is considered therefore that the teachers take ownership of human cultural production in the context of their initial training and throughout his professional career. Hopefully, with this study, contribute to raising the profile of teacher knowledge - developed over the initial and vocational training course - that teachers mobilize in relation to children and their peers. Knowledge marked by the professional context, the meanings and feelings in the relationship that each teacher establishes with his own practice. / Esta pesquisa objetivou identificar quais saberes da doc?ncia s?o mobilizados pelos professores de Educa??o Infantil no desenvolvimento das pr?ticas pedag?gicas e analisar esses saberes revelados e mobilizados por docentes dessa etapa de ensino em rela??o ?s necessidades educativas de crian?as de quatro meses a cinco anos e onze meses de idade. Na caracteriza??o da pluralidade dos saberes da doc?ncia, de acordo com Dermeval Saviani (2009), eles se constituem dos saberes Atitudinal, Cr?tico-Contextual, Espec?fico, Pedag?gico e Did?tico-Curricular. Por?m, neste estudo, entre eles, elegeu-se, como recorte para an?lise, o Saber Did?tico-Curricular e o Saber Pedag?gico. Para tal an?lise, selecionou-se epis?dios das pr?ticas pedag?gicas de quatro professoras, sujeitos desta pesquisa. O estudo baseou-se na abordagem qualitativa de pesquisa, cujo referencial te?rico-metodol?gico pautou-se na perspectiva Hist?rico-Cultural com abordagem na pedag?gica Hist?rico-Cr?tica. Para coleta do material emp?rico, utilizou-se de: dois question?rios um aplicado ? dire??o das duas unidades escolares selecionadas e outro aplicado ?s professoras dessas escolas, com vistas ? sele??o dos sujeitos da pesquisa, de observa??es in loco das pr?ticas pedag?gicas das professoras de Educa??o Infantil e das entrevistas semiestruturadas. Como resultado da pesquisa na an?lise dos epis?dios observados, revelaram-se os saberes Did?tico-Curricular e Pedag?gico presentes no contexto das pr?ticas pedag?gicas das professoras, nas quais est?o inseridos os conceitos de desenvolvimento humano descritos por Vygotsky, ou seja, a experi?ncia social e a experi?ncia hist?rica. Considera-se, assim, que as professoras se apropriam da produ??o cultural humana no contexto de sua forma??o inicial e no decorrer de sua trajet?ria profissional. Espera-se, com este estudo, contribuir para dar maior visibilidade aos saberes da doc?ncia desenvolvidos ao longo da trajet?ria de forma??o inicial e profissional , que os professores mobilizam na rela??o com as crian?as e com seus pares. Saberes marcados pelo contexto profissional, nos significados e sentidos presentes na rela??o que cada professor estabelece com sua pr?pria pr?tica.

Submitted by Luis Ricardo Andrade da Silva (lrasilva@uefs.br) on 2015-09-17T01:12:39Z No. of bitstreams: 1 Disserta??o_SANTOS,+Nandyara+Souza_2015.pdf: 1636495 bytes, checksum: ba67341b42e1967506e8b4cc2a28e6cc (MD5) / Made available in DSpace on 2015-09-17T01:12:39Z (GMT). No. of bitstreams: 1 Disserta??o_SANTOS,+Nandyara+Souza_2015.pdf: 1636495 bytes, checksum: ba67341b42e1967506e8b4cc2a28e6cc (MD5) Previous issue date: 2015-04-17 / This dissertation is the result of an empirical research, with a qualitative approach, conducted as one of the requirements of the Master in Education Degree of the Universidade Estadual de Feira de Santana. It discusses the role of pedagogical counseling in pedagogical training of higher education professors, seeing it as referent to professional development. The research was based on the emerging paradigm of science (SOUSA SANTOS, 1995), characterized by complexity and transdisciplinarity (MORAES and VALENTE, 2008) in dialogue with the Theory of Social Representations (Moscovici, 2003; 2013) (JODELET, 2001). It also dialogued with the reflections of the higher education teaching field (Cunha, 1998; Ristoff, 2006), the pedagogical training of the university teaching professionals (Vasconcelos, 2000; PIMENTA and ANASTASIOU, 2002; TARDIF, 2007; SOARES and CUNHA, 2010), and pedagogical counseling (LUCARELLI, 2002 and 2008; CUNHA, 2012 and 2014) and arouse from the following research question: according to the representations of teachers of a private university of Bahia, which are the contributions from the pedagogical counseling sector for the professional development of these subjects? Empirical research was performed at a private college of Bahia, and seven undergraduate courses professors of the allusive institution of higher education participated. In order to constitute the corpus of research, we conducted semistructured interviews, with exmanent type questions (JOVCHELOVITCH and BAUER, 2002). Parts of meaning were organized, analyzed and discussed from the theoretical and methodological principles of Content Analysis (BARDIN, 2011). As achieved results, we observed that the professors consider teaching in higher education as a complex activity, with their professional identity oscillating between vocation and professionalism, and some teachers believe that dominion of methods and techniques is sufficient for the act of teaching. Regarding the pedagogical training for teaching in higher education, we note that the professionalization of professors is shrouded in many forces, sometimes favorable, sometimes antagonistic, which further complicates the situation of teaching in university settings, since the lack of teacher training hinders the establishment of a professional identity. Finally, in discussing the role of pedagogical counseling, we testify that the performance of the ASPED is a very controversial topic, incorporating from punctual, urgent issues aimed at meeting the market needs of a private institution, through the pedagogical training of professors, to monitoring professors in curriculum reform processes of undergraduate courses, reviewing assessment practices in education and the registration and promotion of innovative teaching practices. / A presente disserta??o, resultado de uma pesquisa emp?rica, de abordagem qualitativa, realizada como um dos requisitos do Mestrado em Educa??o da Universidade Estadual de Feira de Santana, problematiza o papel do assessoramento pedag?gico na forma??o pedag?gica de professores da educa??o superior, tomando a como referente ao desenvolvimento profissional. A investiga??o, lastreada no paradigma emergente da ci?ncia (SOUSA SANTOS, 1995), caracterizado pela complexidade e transdisciplinaridade (MORAES e VALENTE, 2008) em di?logo com a Teoria das Representa??es Sociais (MOSCOVICI, 2003; 2013), (JODELET, 2001), com as reflex?es no campo da doc?ncia na educa??o superior (CUNHA, 1998; RISTOFF, 2006), da forma??o pedag?gica dos profissionais do magist?rio superior (VASCONCELOS, 2000; PIMENTA e ANASTASIOU, 2002; TARDIF, 2007; SOARES e CUNHA, 2010) e do assessoramento pedag?gico (LUCARELLI, 2002 e 2008; CUNHA, 2012 e 2014), partiu da seguinte quest?o de pesquisa: de acordo com as representa??es de professores de uma faculdade da rede privada da Bahia, quais as contribui??es do setor de assessoramento pedag?gico para o desenvolvimento profissional desses sujeitos? O locus de realiza??o da pesquisa emp?rica foi uma faculdade da rede privada da Bahia, sendo que os sujeitos colaboradores foram um total de 07 professores de cursos de gradua??o da alusiva institui??o de educa??o superior. A fim de constituir o corpus da pesquisa, realizamos entrevistas semiestruturadas, com quest?es do tipo exmanente (JOVCHELOVITCH e BAUER, 2002). As por??es de sentido foram organizadas, analisadas e discutidas a partir dos pressupostos te?rico-metodol?gicos da An?lise de Conte?do (BARDIN, 2011). Como resultados alcan?ados pudemos observar que os professores consideram a doc?ncia na educa??o superior como uma atividade complexa, com identidade profissional que oscila entre a voca??o e a profissionaliza??o, sendo que alguns professores acreditam que o dom?nio de m?todos e t?cnicas ? suficiente para o ato de ensinar. No que se refere ? forma??o pedag?gica para a doc?ncia na educa??o superior, notamos que a profissionaliza??o dos professores ? envolta em muitas for?as, ?s vezes favor?veis, ?s vezes antag?nicas, o que torna ainda mais complexa a situa??o da doc?ncia no magist?rio superior, vez que a falta de forma??o pedag?gica dificulta a constitui??o de uma identidade profissional. Por ?ltimo, ao discutirmos o papel do assessoramento pedag?gico, testemunhamos que a atua??o da ASPED ? um tema bastante controverso, incorporando desde as quest?es pontuais, emergenciais que visam o atendimento das necessidades mercadol?gicas de uma institui??o privada, passando pela forma??o pedag?gica dos professores, pelo acompanhamento de docentes nos processos de reformula??o curricular dos cursos de gradua??o, pela revis?o das pr?ticas de avalia??o na educa??o e pelo registro e fomento de pr?ticas pedag?gicas inovadoras.

Since 1984, public service occupations in New Zealand have been subordinated to the over-determined bureaucratic structures of contemporary managerialism. The reactions of front-line public servants to New Management’s unfamiliar ‘market-place’ imperatives and the concomitant loss of occupational autonomy have received very little rigorous qualitative analysis. This study addresses that shortfall, taking as its cue a key question in the sociology of ‘profession’—what arouses or subdues the inclination of bureaucratised occupations to professionalise as a means of reclaiming autonomy? It explains the nature and meaning of strategies adopted by front-line practitioners in New Zealand’s Department of Conservation (DOC) to defend their marginalised work conventions and collegial culture. Symbolic interactionist analysis shows that profoundly personal values and beliefs connect vocationally motivated practitioners with their ‘mission’ (to conserve natural and cultural heritage). These powerful intuitive connections play a crucial role in subduing interest in resistance and organised strategic action, principally by converting conservation labour into the pursuit of personal fulfilment. Practitioners respond to managerial intrusions on their core work (the source of their fulfilment) by defending these personal connections rather than group interests. As a result of this introversion, perceptions of ‘community’ and occupational identity are disorganised and become a further reason for inaction. Practitioners resolve the conflict between self-interested pursuit of fulfilment and the altruistic goals of conservation by negotiating an unspoken bargain with DOC’s authority structures. The ‘pay-offs’ for deferral to managerial authority win the space to pursue fulfilment through immersion and conspicuous achievement in work, obviating the need for more concerted defensive action. Accordingly, managerialism has not acted as a professionalising catalyst for this group. NB: The abstract has been revised by the author in the electronic version of this thesis, since the print edition was published.

Existing terrestrial carbon accounting models have mainly investigated atmosphere-vegetationsoil stocks and fluxes but have largely ignored the hydrological flux of organic carbon. It is generally assumed that biomass and soil carbon are the only relevant pools in a landscape ecosystem. However, recent findings have suggested that significant amounts of organic carbon can dissolve (dissolved organic carbon or DOC) or particulate (particulate organic carbon or POC) in water and enter the hydrological flux at the catchment scale. A significant quantity of total organic carbon (TOC) sequestered through photosynthesis may be exported from the landscape through the hydrological flux and stored in downstream stocks.¶ This thesis presents a catchment-scale case study investigation into the export of organic carbon through a river system in comparison with carbon that is produced by vegetation through photosynthesis. The Cotter River Catchment was selected as the case study. It is a forested catchment that experienced a major wildfire event in January 2003. The approach is based on an integration of a number of models. The main input data were time series of in-stream carbon measurements and remotely sensed vegetation greenness. The application of models to investigate diffuse chemical substances has dramatically increased in the past few years because of the significant role of hydrology in controlling ecosystem exchange. The research firstly discusses the use of a hydrological simulation model (IHACRES) to analyse organic carbon samples from stream and tributaries in the Cotter River Catchment case study. The IHACRES rainfall-runoff model and a regionalization method are used to estimate stream-flow for the 75 sub-catchments. The simulated streamflow data were used to calculate organic carbon loads from concentrations sampled at five locations in the catchment.¶ The gross primary productivity (GPP) of the vegetation cover in the catchment was estimated using a radiation use efficiency (RUE) model driven by MODIS TERRA data on vegetation greenness and modeled surface irradiance (RS). The relationship between total organic carbon discharged in-stream and total carbon uptake by plants was assessed using a cross-correlation analysis.¶ The IHACRES rainfall-runoff model was successfully calibrated at three gauged sites and performed well. The results of the calibration procedure were used in the regionalization method that enabled streamflow to be estimated at ungauged locations including the seven sampling sites and the 75 sub-catchment areas. The IHACRES modelling approach was found appropriate for investigating a wide range of issues related to the hydrological export of organic carbon at the catchment scale. A weekly sampling program was implemented to provide estimates of TOC, DOC and POC concentrations in the Cotter River Catchment between July 2003 and June 2004. The organic carbon load was estimated using an averaging method.¶ The rate of photosynthesis by vegetation (GPP) was successfully estimated using the radiation use efficiency model to discern general patterns of vegetation productivity at sub-catchment scales. This analysis required detailed spatial resolution of the GPP across the entire catchment area (comprising 75 sub-catchment areas) in addition to the sampling locations. Important factors that varied at the catchment scale during the sampling period July 2003 – June 2004, particularly the wildfire impacts, were also considered in this assessment. ¶ The results of the hydrologic modelling approach and terrestrial GPP outcome were compared using cross correlation and regression analysis. This comparison revealed the likely proportion of catchment GPP that contributes to in-stream hydrological flux of organic carbon. TOC Load was 0.45% of GPP and 22.5 - 25% of litter layer. As a result of this investigation and giving due consideration to the uncertainties in the approach, it can be concluded that the hydrological flux of organic carbon in a forested catchment is a function of gross primary productivity.

Manure contains nutrients for crop growth; however, overapplication, with time, can result in excess nutrients in soil, which can subsequently be lost in surface runoff. <p>The general purpose of this research is to study the effect of liquid hog manure, applied as an agricultural fertilizer, on water chemistry of surface runoff from rainfall simulation tests. Specifically the research focuses on runoff water chemistry comparisons between lands receiving hog manure at different rates, via different injection methods, and upon different slope positions. <p>To examine these objectives, soil nutrient supply rates (P, NH4-N, and NO3-N) of the 0 5 cm depth of soil adjacent to rainfall simulation positions, and runoff water chemistry (TP, OP, NH4-N, NO3-N, DOC, Cl- and coliforms) during rainfall simulation tests were collected before and after manure addition. <p> Generally, manure application did increase soil NH4-N and NO3-N supply rates, and runoff NH4-N concentration. Soil P supply rate and runoff TP concentration were not affected by the manure addition; however, runoff OP concentration at one site (Perdue) increased significantly due to manure addition. The manure treatments applied in this study did not cause any significant increases in fecal or total coliform in runoff from rainfall simulation tests conducted 7 8 months after manure application. None of the water quality parameters exceeded the Guidelines for Canadian Drinking Water Quality. <p> Manure injection method (regular versus low soil surface disturbance) had consistent effects on runoff chemistry, but application rate did not. The regular disturbance method had significantly higher concentrations of water quality parameters than the low disturbance method. <p> The position of the test on the slope did not result in any consistent trends in runoff chemistry, whether before or after manure addition. Foot slope positions had higher soil NH4-N supply rates than upper slope positions, both before and after manure addition. Soil NH4-N, NO3-N, and P supply rates between landscape positions were not likely influenced by manure addition. <p> Regression tests between soil nutrient supply rates and runoff chemistry indicate that soil NH4-N supply rates are a good index to predict runoff NH4-N concentration, but soil P did not predict runoff P.