Thesis (M. Phil.)--University of Hong Kong, 1997. / Includes bibliographical references (leaf 83-84).

A Boolean matrix is a matrix with elements from the Boolean semiring ({0, 1}, +, x), where the addition and multiplication are as usual with the exception that 1 + 1 = 1. In this thesis we study eight classes of monoids whose elements are Boolean matrices. Green's relations are five equivalence relations and three pre-orders which are defined on an arbitrary monoid M and describe much of its structure. In the monoids we consider the equivalence relations are uninteresting - and in most cases completely trivial - but the pre-orders are not and play a vital part in understanding the structure of the monoids. Each of the three pre-orders in each of the eight classes of monoids can be viewed as a computational decision problem: given two elements of the monoid, are they related by the pre-order? The main focus of this thesis is determining the computational complexity of each of these twenty-four decision problems, which we successfully do for all but one.

Orientadores: Mauro Jose Andrade Tereso, Roberto Funes Abrahão / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola / Made available in DSpace on 2018-08-11T01:58:25Z (GMT). No. of bitstreams: 1 Gemma_SandraFranciscaBezerra_D.pdf: 4151256 bytes, checksum: 28174605e237953b40d28d5e6eb46f3c (MD5) Previous issue date: 2008 / Resumo: A agricultura orgânica tem sido apontada como uma forma de cultivo sustentável do ponto de vista ecológico, econômico e social. No entanto, não se encontram pesquisas que tenham por objetivo discutir a sustentabilidade do ¿homem trabalhador¿ dentro deste sistema; ou seja, não há um corpo de conhecimentos consolidado sobre este tipo de atividade, assim como não existem indicadores, que nos permitam avaliar os impactos que este trabalho pode ter sobre a saúde e o bem estar das pessoas, embora a exclusão da manipulação de biocidas tóxicos já constitua um grande avanço. Nesta pesquisa investiga-se, através da Análise Ergonômica do Trabalho e da Teoria da Complexidade, as características do trabalho humano na agricultura orgânica, e em particular do trabalho dos gestores, focando nos aspectos da organização do trabalho e da tecnologia utilizada, buscando ampliar a compreensão das atividades desenvolvidas, suas dificuldades e estratégias de superação. O gestor da produção orgânica é geralmente administrador e executor do trabalho, assumindo todas as funções administrativas de planejamento, organização, direção e controle de todas as áreas: produção, manutenção, finanças, recursos humanos e comércio, bem como a responsabilidade pelas questões ligadas à certificação, ao reflorestamento e à conservação do solo e da água. Ele necessita ainda pensar a unidade de produção de forma integrada e sistêmica, entendendo-a e tratando-a como um ser vivo, observando e identificando os elementos que o auxiliem na tomada de decisões para enfrentar as múltiplas dificuldades, em um ambiente onde não se dispõe de tecnologia adequada, com poucos recursos financeiros, e sem assessoria técnica. As dificuldades relatadas pelos agricultores são de natureza bastante variada. Vê-se desde aquelas relacionadas com exigências predominantemente físicas, cognitivas e afetivas do trabalho, até aquelas relacionadas mais diretamente com a falta de recursos tecnológicos, organizacionais, materiais, financeiros e humanos. Pode-se concluir que a hipótese inicialmente formulada é verdadeira, ou seja, que o trabalho na agricultura orgânica é complexo, pois incorpora os preceitos ecológicos, econômicos e sociais de sustentabilidade, que podem ser contraditórios entre si. Estes preceitos trazem determinantes específicos de natureza bastante variada que geram contradições e incertezas para o trabalho do agricultor, principalmente para o do gestor da produção. Esta complexidade do trabalho se relaciona com a necessidade de integrar múltiplas dimensões, demandando do gestor o desenvolvimento e a integração de variados saberes a fim de criar uma organização do trabalho dinâmica, como aquela descrita por Edgar Morin, que precisa ser freqüentemente reconstituída devido ao grande número de interações e de relações complementares e antagonistas entre ordem e desordem . Muitas pesquisas ainda precisam ser feitas, especialmente sobre as questões técnico-agronômicas e de saúde e conforto, assim como aquelas relacionadas com a comercialização, certificação e acesso a crédito. Será preciso ainda desenvolver políticas públicas que favoreçam a assistência e suporte técnico adequados. Somente a integração destes vários esforços poderá contribuir para o desenvolvimento deste setor, não somente em termos de produtividade e qualidade, mas também de melhorias para o trabalho e a qualidade de vida dos agricultores / Abstract: The organic agriculture has been indicated as a form of sustainable cultivation under the ecological, economical and social perspectives. However, researches addressing the sustainability of the ¿worker¿ within this system are not available; this means that there is not a consolidated knowledge package about this type of activity, as well as there are no indicators to allow us to evaluate the impact of such work on people¿s health and well-being, although the exclusion of toxic biocides on handling operations is already considered a big step ahead. In this research, it is investigated through the Ergonomic Analysis of the Work method and the Theory of Complexity, the human work characteristics at the organic agriculture, in particular the work of the managers, focusing the work organization aspects and the technology used, aiming to amplify the comprehension of the performed activities, the difficulties found and the overcoming strategies. The organic production manager is usually not only the administrator but also the executor of the job, assuming all administrative functions with regards to planning, organization, management and control in all areas like production, maintenance, finance, human resources and sales, as well as systems certification, reforesting and water and soil preservation . He still needs to think about the Production Unit in an integrated and systemic way, building knowledge through a very complex approach, understanding it and treating it like a live system, watching and identifying the elements which can help him on decisions making, to face multiple difficulties, in an environment where a suitable technology and technical support are not available, with few financial resources. The difficulties reported by agriculture workers have many different natures, varying from those related mainly to physical, cognitive and affective work demands, to those directly connected to lack of technological, organizational, material, financial and human resources. It is feasible to infer that the originally formulated hypothesis is valid, i.e., that the organic agriculture work is complex, as it incorporates the ecological, economical and social sustainability principles, which may be contradictory among themselves. These sustainability principles carry specific determinants, with several different aspects which bring contradictions and uncertainties to the agriculture worker job, mainly to the production manager. This work complexity is related to the need to integrate multiple dimensions, demanding the manager to develop and integrate diverse knowledge, in order to create a dynamic work organization, as the one described by Edgar Morin, which needs to be frequently remodeled due to the large number of interactions and complementary and opposed relations between order and disorder. Many researches must still be done, mainly about the technical-agronomic and health and comfort questions, as well as those related to sales, certification and credit access. It will be still necessary to develop public policies, to provide the require technical and assistance support. Just the integration of these several efforts can collaborate to the development of this segment, not only in terms of quality and productivity, but also to improve agriculture workers¿ job and quality of life / Doutorado / Planejamento e Desenvolvimento Rural Sustentável / Doutor em Engenharia Agrícola

Thesis (MA (Philosophy))--University of Stellenbosch, 2008. / This thesis sets out to model the notion of group identity in terms of the theory of complexity. It is an attempt to speak meaningfully about a concept that needs to have a sense of stability in order to constitute an ‘identity’, but at the same time has to be able to change in order to adapt to changing circumstances – and indeed does change. This tension between stability and change is seen as a manifestation of the philosophical endeavour of ‘thinking the difference’ which, in this context, is understood to mean that if we are committed to thinking the difference (and thereby undermining the philosophy of the same) for ethical reasons, we have to speak of group identity itself in terms that preserve difference. That entails keeping the tensions inherent to the notion intact, rather than choosing to emphasise one end of the tension, thereby reducing the other. As such, identity is understood as being relational. While modelling group identity as a complex system two important tensions are identified: that of the inside-outside divide that is a function of the boundary-formation of the system and the traditional tension between agency and structure in the formation of identity. The emphasis on difference as constitutive of identity places the argument within poststructuralism as a school of thought. More specifically, the links that have been established between complexity theory and the work of Jacques Derrida is explored to unpack the implications these links would have for group identity. This application is done within the framework of time: first the issues of the past and the memory of the group are investigated to explore whether identity as a complex system can cope with its own tensions. The work of Derrida is employed to show how the memory of a complex system can be understood as the inheritance of the system. This is an ethical understanding which entails responsibility. Understanding the past in this way, it is argued, allows the future to be thought. This is the case, it is argued, because the future must be understood as a Derridean ‘new beginning’ which entails engaging with and deconstructing the past. Finally, this notion of the future as a new beginning is unpacked. It is defined as the group’s singular opportunity to allow for ‘real’ change, change that is only possible if the system is disrupted by its outside. It is argued that the complex system as a very particular open system can accommodate the possibility of the ‘new beginning’. This understanding of the system and its outside is brought in relation to Derrida’s understanding of the economy of the system and the future as a ‘new kind of writing’. The implications of this theory for the notion of autonomy are briefly addressed. In order to test the theory, the argument is applied throughout to the example of the Afrikaner as a group identity. In conclusion, suggestions are made as to how the Afrikaner could understand itself and its memories in order for the group identity to survive meaningfully and – more importantly – ethically.

Superdense coding and quantum teleportation are two phenomena which were not possible without prior entanglement. In superdense coding, one sends n bits of information using n/2 qubits in the presence of shared entanglement. However, we show that n bits of information cannot be sent with less than n bits of communication in LOCC protocols even in the presence of prior entanglement. This is an interesting result which will be used in the rest of this thesis. Quantum teleportation uses prior entanglement and classical communication to send an unknown quantum state. Remote state preparation (RSP) is the same distributed task, but in the case that the sender knows the description of the state to be sent, completely. We study the communication complexity of approximate remote state preparation in which the goal is to prepare an approximation of the desired quantum state. Jain showed that the worst-case error communication complexity of RSP can be bounded from above in terms of the maximum possible information in an encoding [18]. He also showed that this quantity is a lower bound for communication complexity of exact remote state preparation [18]. In this thesis, we characterize the worst-case error and average-case error communication complexity of remote state preparation in terms of non-asymptotic information-theoretic quantities. We also utilize the bound we derived for the communication complexity of LOCC protocols in the first part of the thesis, to show that the average-case error communication complexity of RSP can be much smaller than the worst-case.

In program analysis, unknown properties for terms are typically represented symbolically as variables. Bound constraints on these variables can then specify multiple optimisation goals for computer programs and nd application in areas such as type theory, security, alias analysis and resource reasoning. Resolution of bound constraints is a problem steeped in graph theory; interdependencies between the variables is represented as a constraint graph. Additionally, constants are introduced into the system as concrete bounds over these variables and constants themselves are ordered over a lattice which is, once again, represented as a graph. Despite graph algorithms being central to bound constraint solving, most approaches to program optimisation that use bound constraint solving have treated their graph theoretic foundations as a black box. Little has been done to investigate the computational costs or design e cient graph algorithms for constraint resolution. Emerging examples of these lattices and bound constraint graphs, particularly from the domain of language-based security, are showing that these graphs and lattices are structurally diverse and could be arbitrarily large. Therefore, there is a pressing need to investigate the graph theoretic foundations of bound constraint solving. In this thesis, we investigate the computational costs of bound constraint solving from a graph theoretic perspective for Information Flow Analysis (IFA); IFA is a sub- eld of language-based security which veri es whether con dentiality and integrity of classified information is preserved as it is manipulated by a program. We present a novel framework based on graph decomposition for solving the (atomic) bound constraint problem for IFA. Our approach enables us to abstract away from connections between individual vertices to those between sets of vertices in both the constraint graph and an accompanying security lattice which defines ordering over constants. Thereby, we are able to achieve significant speedups compared to state-of-the-art graph algorithms applied to bound constraint solving. More importantly, our algorithms are highly adaptive in nature and seamlessly adapt to the structure of the constraint graph and the lattice. The computational costs of our approach is a function of the latent scope of decomposition in the constraint graph and the lattice; therefore, we enjoy the fastest runtime for every point in the structure-spectrum of these graphs and lattices. While the techniques in this dissertation are developed with IFA in mind, they can be extended to other application of the bound constraints problem, such as type inference and program analysis frameworks which use annotated type systems, where constants are ordered over a lattice.

Made available in DSpace on 2016-04-29T14:17:34Z (GMT). No. of bitstreams: 1 Ana Carla Junqueira Meirelles Roberto.pdf: 946039 bytes, checksum: 140b95ab8262410bb8a4e9fba7d968dd (MD5) Previous issue date: 2008-10-03 / This thesis is the result of a study about the theory of complexity which has as creator and sistematizator the French sociologist Edgar Morin. The main objective of this study is to research the possibility of a social worker professional intervention, in light of the theory of complexity, and the object of study is to conduct an analysis on the professional practice, from such theoretical and methodological proposal. We, therefore, carried out a survey with social workers attached to the Reference Centre for Social Welfare Vila Industrial, São José dos Campos. The study attempted to identify the most significant components that the subjects in question attach to professional practice, as well as the necessary underlying knowledge for the exercise of professional intervention. A multidimensional methodology of research was employed, attempting to understand the phenomena in its scale with the willingness to experience and interact in the context investigated, observe and be observed, seeking to identify the contents able to clarify the subject under study. Through statements, the study attempted to find the connections and expressions of different ways of thinking about professional practice, linking them to possible contributions which the theory of complexity could bring to Social Service. This is, therefore, a qualitative research which was being built on the way. It could be observed that the daily life of social workers shows the need for a broader theoretical apparatus in order to meet the demands brought by the users; Nowadays, the theory of complexity represents a significant contribution to acknowledge the difficult reality of contemporary subject / Esta dissertação é resultado de um estudo teórico realizado sobre a teoria da complexidade, que tem como idealizador e sistematizador o sociólogo francês Edgar Morin. O objetivo principal deste estudo é investigar a possibilidade da intervenção profissional do assistente social à luz da teoria da complexidade e o objeto de estudo consiste em realizar uma análise sobre a prática profissional, a partir desta proposta teórico-metodológica. Para tal, realizamos uma pesquisa com assistentes sociais vinculados ao Centro de Referência da Assistência Social - Vila Industrial, do município de São José dos Campos. Procuramos identificar os componentes mais significativos que estes sujeitos atribuem à prática profissional, assim como, os conhecimentos subjacentes necessários para o exercício da intervenção profissional. Utilizamos a metodologia multidimensional de pesquisa procurando apreender os fenômenos em sua amplitude, com a disposição para vivenciar e interatuar no contexto investigado, observar e ser observado, procurando identificar os conteúdos capazes de esclarecer o objeto em estudo. Através dos depoimentos procuramos as conexões e expressões das diferentes formas de pensamento sobre a prática profissional, articulando-as às contribuições possíveis que a teoria da complexidade pode trazer ao Serviço Social. Trata-se, portanto, de uma pesquisa qualitativa que foi se construindo no caminho. Constatamos que o cotidiano dos assistentes sociais revela a necessidade de um aparato teórico mais abrangente para alcançar as demandas trazidas pelos usuários; a teoria da complexidade representa hoje, uma contribuição significativa para reconhecer a difícil realidade do sujeito contemporâneo

Ce travail a été développé dans le cadre du projet européen FACETS-ITN, dans le domaine des Neurosciences Computationnelles. Son but est d’améliorer la compréhension des réseaux de neurones stochastiques de taille finie, pour des sources corrélées à caractère aléatoire et pour des matrices de connectivité biologiquement réalistes. Ce résultat est obtenu par l’analyse de la matrice de corrélation du réseau et la quantification de la capacité de codage du système en termes de son information de Fisher. Les méthodes comprennent diverses techniques mathématiques, statistiques et numériques, dont certaines ont été importés d’autres domaines scientifiques, comme la physique et la théorie de l’estimation. Ce travail étend de précédents résultats fondées sur des hypothèses simplifiées qui ne sont pas réaliste d’un point de vue biologique et qui peuvent être pertinents pour la compréhension des principes de travail liés cerveau. De plus, ce travail fournit les outils nécessaires à une analyse complète de la capacité de traitement de l’information des réseaux de neurones, qui sont toujours manquante dans la communauté scientifique. / The brain is the most complex system in the known universe. Its nested structure with small-world properties determines its function and behavior. The analysis of its structure requires sophisticated mathematical and statistical techniques. In this thesis we shed new light on neural networks, attacking the problem from different points of view, in the spirit of the Theory of Complexity and in terms of their information processing capabilities. In particular, we quantify the Fisher information of the system, which is a measure of its encoding capability. The first technique developed in this work is the mean-field theory of rate and FitzHugh-Nagumo networks without correlations in the thermodynamic limit, through both mathematical and numerical analysis. The second technique, the Mayer’s cluster expansion, is taken from the physics of plasma, and allows us to determine numerically the finite size effects of rate neurons, as well as the relationship of the Fisher information to the size of the network for independent Brownian motions. The third technique is a perturbative expansion, which allows us to determine the correlation structure of the rate network for a variety of different types of connectivity matrices and for different values of the correlation between the sources of randomness in the system. With this method we can also quantify numerically the Fisher information not only as a function of the network size, but also for different correlation structures of the system. The fourth technique is a slightly different type of perturbative expansion, with which we can study the behavior of completely generic connectivity matrices with random topologies. Moreover this method provides an analytic formula for the Fisher information, which is in qualitative agreement with the other results in this thesis. Finally, the fifth technique is purely numerical, and uses an Expectation-Maximization algorithm and Monte Carlo integration in order to evaluate the Fisher information of the FitzHugh-Nagumo network. In summary, this thesis provides an analysis of the dynamics and the correlation structure of the neural networks, confirms this through numerical simulation and makes two key counterintuitive predictions. The first is the formation of a perfect correlation between the neurons for particular values of the parameters of the system, a phenomenon that we term stochastic synchronization. The second, which is somewhat contrary to received opinion, is the explosion of the Fisher information and therefore of the encoding capability of the network for highly correlated neurons. The techniques developed in this thesis can be used also for a complete quantification of the information processing capabilities of the network in terms of information storage, transmission and modification, but this would need to be performed in the future.

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No. of bitstreams: 3 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao Alexandre R Faur.pdf: 12647516 bytes, checksum: 6404faa3bd2610ced658aad9d4114bf2 (MD5) Produto Alexandre R Faur.pdf: 78712171 bytes, checksum: cf7d03389c7cb23233e302bb4416d153 (MD5) / Nesse trabalho tem-se por hipótese que os alunos se sentem excluídos das decisões curriculares e do planejamento das atividades de aula, e também não veem significado nos conteúdos científicos que fazem parte da abordagem tradicional, marcadamente positivista. Além disso, constata-se a dificuldade em estabelecerem conexões entre os conceitos científicos escolares e sua aplicabilidade cotidiana. Tais fatos são componentes importantes no entendimento do fracasso recorrente na Química enquanto componente curricular. A fim de melhor compreender essa questão, esse trabalho procurou referência na Teoria da Complexidade de Edgar Morin e no movimento CTS para a educação em ciências, com o objetivo de elaborar e avaliar as contribuições de uma metodologia onde as temáticas se constituem em objetos centrais de estudos de onde emanam os conceitos/saberes científicos necessários ao entendimento do tema que se propõe, visando ainda superar o modelo tradicional. Para tal, realizou-se um estudo baseado no desenvolvimento do currículo do 3º ano do ensino médio de um colégio da rede estadual na cidade do Rio de Janeiro, através de uma concepção metodológica, centrada no protagonismo dos alunos, na contextualização, na horizontalização das relações e no uso de recursos didáticos diversificados, sempre visando a busca pelo conhecimento pertinente, capaz de instigar o interesse dos alunos pelas ciências. Adicionalmente, a fim de trazer maior consistência às conclusões sobre aprendizagens, buscou-se comparar o desempenho da turma submetida à proposta com outra, de características individuais e socioeconômicas semelhantes, que teve aulas de Química tradicionais, ou seja, verticalizadas, centradas no professor e com a disciplinarização e hiperespecialização dos tópicos, conforme rege o paradigma ainda vigente. O fruto dessa pesquisa explicitou uma melhora no desempenho dos alunos submetidos à metodologia baseada na Complexidade/CTS, com maior grau de aproveitamento em avaliações formais, sobretudo quando comparado aos que permaneceram no modelo tradicional. Concomitantemente, pode-se observar, através de entrevistas e diagnoses, que os discentes revelaram sua predileção por esse tipo de abordagem, com destaque para a possibilidade de opinar na condução do processo de ensino-aprendizagem. Em decorrência do estudo realizado foi elaborada uma publicação, voltada aos docentes de Química, que compila as principais etapas dessa metodologia, com sugestões que vão desde a proposição das temáticas, passando pelos textos de apoio e culminando com as atividades lúdicas propostas em cada momento planejado do processo de ensino-aprendizagem em estudo. / In In this work, it is hypothesized that students feel excluded from curricular decisions and planning of class activities, and also see no meaning in the scientific content that is part of the traditional, positivist approach. In addition, the difficulty in establishing connections between the scholarly scientific concepts and their everyday applicability is verified. Such facts are important components in the understanding of recurring failure in Chemistry as a curricular component. In order to better understand this issue, this work sought reference in Edgar Morin's Theory of Complexity and the CTS movement for science education, with the objective of elaborating and evaluating the contributions of a methodology where the themes are central objects of studies from which emanate the concepts / scientific knowledge necessary to understand the theme that is proposed, aiming to overcome the traditional model. To do this, a study was carried out based on the development of the curriculum of the 3rd year of high school in a state school in the city of Rio de Janeiro, through a methodological conception, centered on the protagonism of students, contextualization, horizontalization of relationships and the use of diversified didactic resources, always seeking the search for relevant knowledge, capable of instigating students' interest in science. In addition, in order to bring greater consistency to the conclusions about learning, it was sought to compare the performance of the group submitted to the proposal with another, with similar individual and socioeconomic characteristics, which had traditional chemistry classes, ie, verticals, centered on the teacher and with the disciplinarization and hyperspecialization of topics, according to the paradigm still in force. The result of this research revealed an improvement in the performance of students submitted to the methodology based on Complexity / CTS, with a higher degree of use in formal evaluations, especially when compared to those that remained in the traditional model. Concomitantly, it can be observed through interviews and diagnoses that the students showed their preference for this type of approach, with emphasis on the possibility of opining in the conduction of the teaching-learning process. As a result of the study, a publication was prepared, aimed at Chemistry teachers, which compiles the main stages of this methodology, with suggestions ranging from the proposition of the themes, through the supporting texts and culminating with the proposed ludic activities at each planned moment of the teaching-learning process under study.

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No. of bitstreams: 3 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação Josiane Azevedo.pdf: 4270264 bytes, checksum: 0c1934d5bd72e20f7ffb8963af555162 (MD5) Produto Josiane Azevedo.pdf: 1788989 bytes, checksum: 120cc185fe9d0dde545a594a8273b766 (MD5) / Este trabalho tem como objetivo investigar a possível contribuição da Teoria da Complexidade para a prática do professor de Química. O mesmo tece uma crítica à fragmentação do ensino e possibilita a reflexão sobre possíveis inseguranças do docente ao trabalhar assuntos que envolvam conteúdos de outras áreas. Para nortear essa investigação foram realizados pesquisas e planejamentos que possibilitaram a confecção de uma sequência didática com o tema: Água e Meio Ambiente, composta por cinco etapas. Essa sequência didática foi aplicada em quatro turmas do Ensino Médio do Colégio Estadual Walter Orlandini, localizado na cidade de São Gonçalo/RJ. Atividades foram propostas com o intuito de possibilitar um ambiente de reflexão da prática e que exigisse do docente a construção de relações das diversas áreas do conhecimento. A sequência didática iniciou-se com uma dinâmica em grupo que proporcionou a interação entre a turma e o docente. Na segunda etapa tivemos a aula de introdução ao conhecimento de Química, trazendo para o debate assuntos como senso comum, conhecimento cientifico, pesquisa científica e a importância da Química no cotidiano. Na terceira etapa inserimos o subtema “Tratamento de efluentes”, contextualizando os conteúdos de Química que estavam sendo trabalhados. Na quarta etapa apresentamos uma situação problema que foi o fato do município de São Gonçalo ter sido conhecido como uma cidade pesqueira, o que mudou com a poluição da Baia de Guanabara. Na quinta e última etapa realizamos um júri-simulado utilizando a situação problema da etapa anterior e uma reportagem da internet sobre uma fábrica de sardinhas em conserva na cidade de São Gonçalo, que foi interditada por lançar seus efluentes diretamente na Baía de Guanabara, sem seu devido tratamento. Julgamos que a aplicação da sequência realizou uma abordagem CTSA (Ciência, Tecnologia, Sociedade e Ambiente), permitindo construir um ambiente de reflexão e aprendizado crítico. O trabalho oportunizou ao docente refletir sobre sua prática, pois no planejamento e execução das atividades, o mesmo precisou reformular seu pensamento, de forma a não focar somente nos conteúdos de Química, mas construir relações com outras áreas do conhecimento. Como produto da pesquisa foi desenvolvido um material para professores de Química composto pela sequência didática, leituras e vídeos sugeridos para reflexão da prática do docente. Todas as atividades são adaptáveis à realidade de cada escola e tem o intuito de inspirar outros professores na formulação de novas atividades. / The current project is based on Edgar Morin's Theory of Complexity, which states that science is not separable from its social and historical context. Scientific knowledge must belong to the whole society, which must be able to relate it to their daily lives. We have as main objective to analyze and evaluate the possible contributions of the complex through for the teaching of Chemistry in high school. To guide this research were carried out research and planning that enabled the creation of a didactic sequence composed of Five stages. This didactic sequence was applied in four high school classes of the Walter Orlandini School, located in the city of São Gonçalo / RJ. Activities were proposed with the aim of stimulating student participation and the formation of a critical census of the students. The didactic sequence begins in the first stage with a group dynamics that aimed at the interaction between the class and the teacher. In the second stage the scientific initiation was carried out, bringing to the debate subjects such as common sense, scientific knowledge, scientific methodology and the importance of Chemistry in everyday life. In the third step, we inserted the theme generator “Effluent treatment”, contextualizing the contents of Chemistry that were being worked on. Using the generator theme, a problem situation in the classroom was worked on in the fourth stage, which was the fact that the city of São Gonçalo was known as a fishing city, which changed with the pollution of Guanabara Bay. In the fifth and last stage we performed a jury-simulated using the problem situation of the previous stage and based on an internet report that reported on a factory of canned sardines in São Gonçalo that had been banned for releasing its efluents directly into Guanabara Bay without its due treatment. The present project realized a STSE approach (Science, Technology, Society and Environment), allowing to construct reflection environment and critical learning. The reflections on the practice of teaching was a strong point of the project, allowing that through the complex thought there were changes in the same.