A data modeling procedure called Mixture model, is introduced beneficial to the characteristics of our data. Mixture models have been proved flexible and easy to use, a situation which can be confirmed from the majority of papers and books which have been published the last twenty years. The models are estimated using a Bayesian inference through an efficient Markov Chain Monte Carlo (MCMC) algorithm, known as Gibbs Sampling. The focus of the paper is on models for network-telecommunication lab data (not time dependent data) and on the valid predictions we can accomplish. We categorize our variables (based on their distribution) in three cases, a mixture of Normal distributions with known allocation, a mixture of Negative Binomial Distributions with known allocations and a mixture of Normal distributions with unknown allocation.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-10-25T11:02:16Z No. of bitstreams: 1 luciahelenaschuchter.pdf: 1363978 bytes, checksum: a8f2b5ccd92b1b263a1cd5b1ca2fd967 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-12-15T12:11:16Z (GMT) No. of bitstreams: 1 luciahelenaschuchter.pdf: 1363978 bytes, checksum: a8f2b5ccd92b1b263a1cd5b1ca2fd967 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-12-15T12:11:28Z (GMT) No. of bitstreams: 1 luciahelenaschuchter.pdf: 1363978 bytes, checksum: a8f2b5ccd92b1b263a1cd5b1ca2fd967 (MD5) / Made available in DSpace on 2016-12-15T12:11:28Z (GMT). No. of bitstreams: 1 luciahelenaschuchter.pdf: 1363978 bytes, checksum: a8f2b5ccd92b1b263a1cd5b1ca2fd967 (MD5) Previous issue date: 2010-03-12 / A presente pesquisa parte da seguinte questão investigativa: no cenário tecnológico e globalizado no qual estão inseridos, busca-se compreender como convivem e interagem, dentro da escola, a Biblioteca Escolar e o Laboratório de Informática, enquanto ambientes de produção de leitura/escrita e conhecimento. Buscou-se fundamentação metodológica na pesquisa qualitativa de abordagem históricocultural, respaldada por Lev S. Vygotsky e Mikhail Bakhtin. O campo de pesquisa se constituiu de duas escolas públicas situadas na cidade de Juiz de Fora/MG. A investigação se desenvolveu por meio dos instrumentos metodológicos: entrevistas semiestruturadas com dois professores-bibliotecários, uma professora responsável pelo laboratório de informática, três professores regentes e duas coordenadoras pedagógicas; análise de documentos; observação e questionário. A análise de dados está organizada em duas categorias: (a) letramentos nas escolas e (b) os sujeitos e a formação continuada: repensando a prática pedagógica. Esta pesquisa aponta para a necessidade de cada instituição escolar construir/perseguir as possibilidades plurais de utilização da biblioteca escolar e do laboratório de informática. Possíveis relações/interações entre estes espaços e sala de aula devem ser promovidas, pois formar alunos leitores e escritores, hoje, não se restringe somente ao impresso ou ao digital. Ambas as formas coexistem e são utilizadas na sociedade. Para que isso ocorra, não basta a existência de recursos “materiais”, como livros e computadores; é preciso uma reflexão coletiva sobre o seu uso, disponibilizar seus acessos, aliados a propostas pedagógicas que tornem seu uso significativo. É também premente promover a formação para o uso técnico e pedagógico das tecnologias disponíveis e presentes no interior da escola a toda comunidade escolar. Considerando a diversidade encontrada entre esses profissionais, as demandas impostas pelo avanço das TIC e as condições espaçotemporais nos ambientes escolares, pode-se pensar numa formação continuada na modalidade a distância. A escola, a universidade e o poder público devem responsabilizar-se pelo desenvolvimento nos docentes e discentes de habilidades de leitura e escrita em diferentes suportes - promovendo os plurais e necessários letramentos - e garantir o acesso desses leitores às novas mídias. Enfim, é tempo de ressignificar a biblioteca escolar e o laboratório de 7 informática, para que se transmutem em espaços coletivos de leitura, escrita, pesquisa, interação, produção de conhecimento e para que sejam frequentados por toda comunidade escolar. / This search takes from inquiry question: in the world-wide and thecnologycal where they are, it looks for understanding how they live together and interact themselves, inside the school, the library and computer lab, as writing, knowledge and reading production place. It was based on qualifier search of cultural-hystoric approach taken place by Lev S Vygotsky and Mikhail Bakhtin. The search field composed itself two public schools in Juiz de Fora city state of Minas Gerais. The study developed itself throughout two methodologic tools: half-structured interview with two library teachers, one teacher head of computer lab, three classroom teachers and two teaching coordinators; analysis of data; observation and quiz. The data analysis is organized into two rates: (a) literacy at schools and (b) people and the continuing education; rethinking the pedagogical practice. This search points to the necessity of each school institution builds/runs after the plural possibilities of library use and the computer lab. Relationship/interactions possible between these place and the classroom must be promoted once to construct writers and reader students, nowadays, it does not limit itself only to the printed matter or to the digital one. Both of them live together and they are used in society. For this occurring, the existence of “material” sources is not enough, like books and computers; It is needed a commom reflexion about its use, to become available its access related to educational offers wich becomes its use meaningful. It is also urgent promoting the graduation for the tecnico and educational use of the technologies, available and present inside the school for all school community. Considering the found diversity among the workers, the imposed requirement by advance of TIC and the time-space conditions on school places. It can think about continuing education on distance modality. The school, the university and the government must be blame themselves by development on docent and discents of writing and reading habilities into supports different. Advancing the required and plural literacies and certifies the access of these readers to the new media. Finally, it is time to reframe the school library and the computer lab, for they transmute themselves into collective spaces of reading, writing, search, interaction, knowledge production and for they will be attended by all school community.

Submitted by Miriam Lucas (miriam.lucas@unioeste.br) on 2017-09-01T18:50:57Z No. of bitstreams: 2 Alexandre_Muriana_2017.pdf: 20692087 bytes, checksum: b9e7bd41ba1e6d96ffb463c5d18eaad3 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-09-01T18:50:57Z (GMT). No. of bitstreams: 2 Alexandre_Muriana_2017.pdf: 20692087 bytes, checksum: b9e7bd41ba1e6d96ffb463c5d18eaad3 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-05-19 / This work reports a set of activities developed under didactic proposal based on teaching by inquiry in an open laboratory with a group of high school students from a State School of Paraná, Brazil. In these activities the students evaluated, through a sequence of questions, basic concepts about electricity through the construction of circuits with lamps as resistors and other materials of easy access. The approach used is analternative to the traditional approach based on the use of chalk board and chalk. Aims to verify the contributions of a didactic proposal based on research teaching for the conceptual evolution on electricity in high school students. The research under taken was of a qualitative approach of applied nature with exploratory objectives and, as far as the procedural basis, it was figured as an action research. The data collection instruments were pieces that presented questions to be answered in consonance with the stages of teaching by research in open laboratory recommended in the literature. The observation of there action of the students to the situations to which they were exposed demonstrated that the proposal is motivating, because the students carry out the activities with enthusiasm and curiosity. It also demonstrated that previous ideas were built, reaching a deeper degree of elaboration than their previous conceptions. The evidence of learning, such as the level of elaboration of concepts and the use of specific terms in written argumentative interactions, evidences that the proposal was effective for the conceptual evolution on electrodynamics for the screen group. / Este trabalho relata um conjunto de atividades desenvolvidas sob proposta didática baseada no ensino por investigação em laboratório aberto junto a um grupo de estudantes do Ensino Médio de um Colégio Estadual do Paraná. Nestas atividades os estudantes avaliaram, mediante uma sequência de questões, conceitos básicos sobre eletricidade através de construção de circuitos com lâmpadas como resistores e outros materiais de fácil acesso.A abordagem utilizada é uma alternativa à abordagem tradicional baseada na utilização de quadro e giz, e tem como objetivo verificar as contribuições de uma proposta didática baseada no ensino por investigação para a evolução conceitual sobre eletricidade em alunos do ensino médio. A pesquisa empreendida foi de abordagem qualitativa de natureza aplicada com objetivos exploratórios e, quanto à base procedimental, figurou-se como uma pesquisa-ação. Os instrumentos de coleta de dados foram fichas que traziam questões a serem respondidas em consonância com as etapas do ensino por investigação em laboratório aberto preconizadas na literatura. A observação da reação dos estudantes frente às situações às quais foram expostos demonstrou que a proposta é motivadora, pois os alunos realizam as atividades com entusiasmo e curiosidade. Demonstrou também que as ideias prévias foram reconstruídas, atingindo um grau de elaboração mais aprofundado do que suas concepções prévias. Os indícios de aprendizagem, como o nível de elaboração dos conceitos e a utilização de termos específicos nas interações argumentativas registradas de modo escrito, evidenciam que a proposta se mostrou eficaz para a evolução conceitual sobre eletrodinâmica para o grupo em tela.

Ensinar é sem dúvida um dos grandes desafios do século XXI. A busca por alternativas ao tradicional sistema de ensino mostra a necessidade de mudanças, que é inerente à sociedade do conhecimento em contínua evolução. Desta forma, esta pesquisa pretende investigar se as ações desenvolvidas na Escola E. E. Arnolfo Azevedo pelo projeto Laboratório de Ciências e sua interação com a Universidade por meio do programa de Préiniciação Científica contribuem para a construção e manutenção de um modelo que busca a melhoria da qualidade do ensino e aprendizagem em ciências exatas e biológicas nas Escolas Públicas. Foram utilizados questionários qualitativos e quantitativos para construção dos gráficos em forma de barras e linhas de tendência, associando estes dados ao referencial proposto por meio da triangulação. Assim, os resultados indicam que a participação dos alunos nos respectivos projetos: Laboratório e a Pré-iniciação científica, promovem significativa mudança de comportamento associado à dedicação e responsabilidade com os estudos representada pela melhora significativa em seu rendimento escolar e conseqüente melhora na qualidade do ensino na área de ciências naturais. / Teaching is undoubtedly one of the greatest challenges of the 21st century. The search for alternatives to the traditional teaching system shows the need for changing, which is inherent to knowledge society in continuous development. Therefore, this research deals with the investigation whether the actions carried out in the Project of the Laboratory of Sciences at E.E. Arnolfo Azevedo and its interaction with the University through Scientific Pre-Initiation Program have contributed to the construction and maintenance of a model which seeks to improve the teaching and learning quality in Exact and Biological Sciences in Public Schools. Qualitative and quantitative surveys were used to build graphs of trend lines and error bars, associating these data with the proposed framework through triangulation. The results indicate that the students\' participation in the respective projects (Laboratory and Scientific Pre-Initiation) has promoted meaningful behavior change associated with studies dedication and responsibility represented by the significant improvement in their school performance and, consequently, in the teaching quality in Natural Sciences area.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2018-08-23T19:21:12Z No. of bitstreams: 1 cinthialopesdeoliveira.pdf: 4439401 bytes, checksum: 049a4099c9658cf167c16933e8ee01aa (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-09-03T15:58:36Z (GMT) No. of bitstreams: 1 cinthialopesdeoliveira.pdf: 4439401 bytes, checksum: 049a4099c9658cf167c16933e8ee01aa (MD5) / Made available in DSpace on 2018-09-03T15:58:36Z (GMT). No. of bitstreams: 1 cinthialopesdeoliveira.pdf: 4439401 bytes, checksum: 049a4099c9658cf167c16933e8ee01aa (MD5) Previous issue date: 2018-08-09 / Este trabalho tem o objetivo de pesquisar os modos de produção dos romances, em especial Crônica da casa assassinada (1959) à luz dos manuscritos e da escrita confessional do escritor Lúcio Cardoso (19121968) desenvolvendo a hipótese dos diários como uma proposta de laboratório de escrita. Pretende, ainda, observar os desdobramentos das temáticas como morte, loucura, solidão, violência, religiosidade e a paixão sem medidas, responsáveis pela entrega das personagens cardosianas à situações-limite, reflexo do desmascaramento da hipocrisia e das convenções sociais da época, por meio de uma linguagem rica em símbolos e imagens. Conclui-se que a paisagem como uma representação das sensações e impressões das personagens, bem como, a simbologia das cores, podem revelar uma extensão do drama existencial das personagens Através do estudo das convergências entre a plasticidade da linguagem dos romances e a representação das pinturas pretende-se estabelecer o elo entre a tessitura e a textura dos textos, caracterizando a fragmentação e a variabilidade multifacetária das obras cardosianas. / This work aims to find all modes of production of novels, in particular Crônica da casa assassinada (1959), under the light of the manuscripts and writing confessional of the writer Lúcio Cardoso (1912-1968) and to develop the hypothesis of the diaries are as writing lab. It also intends to observe the unfolding of themes as death, madness, loneliness, violence, religion and passion without measures, because these themes are responsible for the surrender of cardosianas characters to limit-situations, it reflects the unmasking of hypocrisy and social conventions, by means of a language rich in symbols and images. It concludes to be the landscape as representation of the feelings and impressions of the characters, as well as the symbolism of colors, can be an extension of the existential drama of the characters. Through the study of the convergence between the plasticity of the novels language and the representation of paintings, it aims to establish the link between the tessitura and the texture of the texts, featuring the fragmentation and the multifaceted variability Cardoso’s works.

Abstract The subject of this thesis is the characterization of chemical reactions and adsorption by means of remote detection (RD) method of nuclear magnetic resonance (NMR). The thesis consists of three related topics: In the first one, novel RD NMR based methods for characterizing chemical reactions were presented. In the second topic RD NMR methods were used to study the performance of new kind of microfluidic reactors. The third project concentrated on the development of a novel way to quantify the adsorption of flowing gas mixtures in porous materials. Even though all the topics cover quite different areas of research, they have few common nominators: remote detection NMR, microfluidics and method development. Microfluidic devices are of interest for many areas of science (such as molecular biology, disease diagnosis, chemistry) as they offer great promises for future technologies. Small dimensions enable, among many other things, the benefits of small sample volumes, large surface to volume ratio, efficient heat exchange and precise control of flow features and chemical reactions. The efficient evolution of microfluidic processes requires also the development of new innovative ways to characterize the performance of microfluidic devices. In this work, remote detection NMR is utilized for the purpose. RD is a method where the encoding and detection of information are separated physically. In many cases, the encoding and detection are performed with two separate RF coils while a fluid is passing through the studied system. In the first part of the thesis work, we introduced the concept of remote detection exchange (RD-EXSY) NMR spectroscopy. We demonstrated that the RD-EXSY method can provide unique chemical information. Furthermore, the time-of-flight (TOF) information, which is a natural side product of the experimental setup used, can be converted into indirect spatial information, showing the active reaction regions in a microfluidic device. Additionally, we demonstrated that by applying the principles of Hadamard spectroscopy in the encoding of the indirect spectral dimension we were able to produce with high efficiency RD-EXSY TOF images with direct spatial information. This allows even more accurate characterization of the active regions. The second topic concentrates on the development of microfluidc hydrogenation reactors. In the project atomic layer depositon (ALD) method was used for the first time to deposit both catalyst nanoparticles and support material on the surface of wall-coated microreactors. As a model reaction continuous flow propene hydrogenation into propane was studied by means of remote detection NMR. Reaction yield, mass transport phenomena and the activity of the catalyst surface were determined from the RD NMR data. Thirdly we presented a novel method for gas adsorption measurements in porous materials using RD TOF NMR. Traditional adsorption measurements are carried out at static conditions for a single gas component, as multi-component adsorption measurements are challenging and time-consuming. We investigated adsorption of continuously flowing propane and propene gases as well as their mixture in packed beds of mesoporous materials. The unique time-of-flight information obtained using the RD NMR method was utilized in the determination of flow velocity, which was then converted into amount of adsorbed gas.

Seit nunmehr sechs Jahren beschäftigen wir uns ganz gezielt mit der Schnittstelle von Emotion und Design. Alles begann mit der Frage: Warum sprechen uns gewisse Dinge an (und andere nicht) und warum entwickeln wir bei bestimmten Produkten einen starken Besitzwunsch? Dabei geht es uns nicht um Marketingtricks, sondern um die Frage: Können wir den emotionalen Ausdruck von Gestaltung gezielt steuern und wenn ja, wie? Diese Vision keimte erstmals 2010 mit einem hochschulinternen Essay mit dem Thema „Auswirkungen frühkindlicher Prägung auf die Produktgestaltung“ auf. Diverse Experteninterviews nährten den Forscherdrang für eine 300-seitige Masterthesis und mündeten in der Gründung des Design- und Strategiebüros hoch E. Die einstige Kernfrage wurde zur Mission. In unserem büroeigenen Labor intensivieren wir seither die interdisziplinäre Vernetzung, um die Erkenntnisse auf diesem Fachgebiet zu bündeln und weiter zu entwickeln. Als Unternehmer, Dozenten, Betreuer von Absolventenarbeiten, sowie als Sprecher und Berater in Seminaren und Workshops, vermitteln wir unsere praktische Erfahrung und die dazugehörige theoretisch-methodische Basis. Dies ist ein kurzer Einblick in unsere Wirkungsgebiete, welche unsere Motivation für eine fortwährende Auseinandersetzung mit und an der Schnittstelle Emotion und Design Literaturverzeichnis befeuern.

Résumé confidentiel / Résumé confidentiel

Microfluidics has seen an explosion in growth in the past few years, providing researchers with new and exciting lab-on-chip platforms with which to perform a wide variety of biological and biochemical experiments. In this work, a volume quantification tool is developed, demonstrating the ability to measure the volume of individual cells at high resolution and while enabling microfluidic sample manipulations. Care is taken to maximise measurement sensitivity, range and accuracy, though novel use of buoyancy and dynamically tunable microchannels. This first demonstration of a microfluidic tunable volume sensor meant volume sensing over a much wider range, enabling the detection of ̴ 1 µm3 E.coli that would otherwise go undetected. Software was written that enables pressure-driven flow control on the scale of individual cells, which is used to great success in (a) sorting cells based on size measurement and (b) monitoring the growth of cells. While there are a number of macroscopic techniques capable of sorting cells, microscopic lab-on-chip equivalents have only recently started to emerge. In this work, a label-free, volume sensor operating at high resolution is used in conjunction with pressure-driven flow control to actively extract particle/cell subpopulations. Next, a microfluidic growth monitoring device is demonstrated, whereby a cell is flowed back and forth through a volume sensor. The integration of sieve valves allows cell media to be quickly exchanged. The combination of dynamic trapping and rapid media exchange is an important technological contribution to the field, one that opens the door to studies focusing on cell volumetric response to drugs and environmental stimuli. This technology was designed and fabricated in-house using soft lithography techniques readily available in most biotechnology labs. The main thesis body contains four scientific articles that detail this work (Chapters 2-5), all published in peer-reviewed scientific journals. These are preceded by an introductory chapter which provides an overview to the theory underlying this work, in particular the non-intuitive physics at the microscale and the Coulter principle.

Ce travail étudie la préférence pour le pouvoir, de sa définition à sa rencontre en laboratoire ou sur le terrain, de manière expérimentale. Nous construisons cette thèse autour de trois questions : qu'est-ce que le pouvoir et la préférence pour le pouvoir ? Comment l'identifier, en la distinguant des autres types de préférences sociales ? Quels sont les éléments, conditions d'expériences ou situation des sujets, qui l'affectent ? Nous définissons le pouvoir comme une capacité à caractère dispositionnel, qui peut être mise en application, ou non. Ceci nous permet de définir ensuite la notion de préférence pour le pouvoir qui n'est autre qu'une version formalisée de celle de volonté de puissance que l'on rencontre depuis l'antiquité. Nous définissons alors quatre types de préférence : préférence pure ou instrumentale pour le pouvoir potentiel ou effectif. Dans la deuxième partie nous construisons un modèle de pouvoir que nous testons en laboratoire. Nous identifions cette préférence pour le pouvoir sous ses quatre aspects, ce qui est le résultat central de ce travail. Nous cherchons ensuite à comprendre ce qui impacte cette préférence, pour observer que seul le genre a un effet important. Nous mesurons enfin cette préférence, pour découvrir qu'il peut exister une relation importante de corrélation entre préférence pure pour le pouvoir potentiel et pour le pouvoir effectif. La troisième partie a pour but d'étudier ces comportements de préférence pour le pouvoir chez des décideurs dans le cadre du monde synthétique d'Eve Online qui, nous l'observons, constitue à ce titre un bon substitut au laboratoire. De manière contre intuitive, nos observations montrent que les décideurs du monde virtuel ne manifestent pas plus de préférence pour le pouvoir que les autres sujets. / The goal of this thesis is to study preference for power from its definition to laboratory and field experiments. We construct this thesis around three questions: What are power and preference for power ? How to identify this preference and how to distinguish it from other social preferences ? What are the elements, experimental conditions and settings that have an impact on it ? We define power as a dispositional capacity. Hence, preference for power is a formalized version of the power motive and we distinguish four types: pure or instrumental preference for potential or effective power. In the second part of this thesis, we design a model of power and we test it in the laboratory. We identify the four types of preference for power which is the central result of this work. Then, we show that treatment effects are almost nonexistent whereas we find a strong gender effect. We finally measure this preference and find a strong correlation between pure preference for potential power and for effective power. The aim of the third part is to study this behavior in a decision maker population of the Eve Online synthetic world. We first show that field experiments in Eve Online are a good proxy for the lab. We then observe that decision makers don't manifest a stronger preference for power that other subjects.