Submitted by William Justo Figueiro (williamjf) on 2015-07-21T23:42:56Z No. of bitstreams: 1 71c.pdf: 1998686 bytes, checksum: b4bd035a6fcd37ab1ac6a78b99f08184 (MD5) / Made available in DSpace on 2015-07-21T23:42:56Z (GMT). No. of bitstreams: 1 71c.pdf: 1998686 bytes, checksum: b4bd035a6fcd37ab1ac6a78b99f08184 (MD5) Previous issue date: 2013-03-16 / Nenhuma / Este trabalho considera que a popularização da ciência corresponde ao fenômeno social de comunicação dos conhecimentos provenientes da ciência à sociedade em geral (HILGARTNER, 1990; CORNELIS, 1998; MYERS, 2003; CALSAMIGLIA; DIJK, 2004) e assume a existência de graus de popularização da ciência postulada por Hilgartner (1990) e por Jacobi (1999, 1990, 1988, 1985 e 1984), de acordo com os quais a comunicação da ciência ocorre em vários contextos, desde os mais restritos e especializados até os mais amplos e públicos. Ao sustentar que a popularização da ciência é uma troca de linguagem empreendida por sujeitos que, em uma situação de comunicação específica, possuem determinadas finalidades, este trabalho se afilia à concepção charaudiana de contrato de comunicação, que corresponde a um acordo de identificação das condições de realização da troca de linguagem pelos sujeitos. (CHARAUDEAU, 2008a, 2008b, 2007, 2005, 2004 e 2001b). As variações da comunicação pública da ciência (i) decorrem dos componentes dos contratos de comunicação que organizam as trocas de linguagem e (ii) acarretam diferenças na materialidade linguística dos textos, que são o produto dos atos de comunicação. O objetivo desta pesquisa é verificar o indiciamento de graus de popularização da ciência na mídia pelas categorias linguísticas e discursivas correspondentes à referenciação e ao discurso relatado. Ao se afiliar à concepção construtivista da referência, descrita por Mondada e Dubois (2003) e representada também por Apothelóz e Reichler-Béguelin (1995), por Apothelóz (2003) e por Cavalcante (2011), esta pesquisa assume a sistematização de Apothelóz e Reichler-Béguelin (1995) em relação às operações empregadas pelos interlocutores no processo de evolução da referência e as sistematizações relacionadas aos processos de referenciação propostas por Cavalcante (2011) e especialmente por Apothelóz (2003). Além disso, fundamenta-se sobre a definição semiolinguística de que o discurso relatado corresponde ao ato de enunciação mediante o qual um locutor, em determinado espaço e em determinado tempo, relata a um interlocutor o que foi dito por outro locutor a outro interlocutor em espaço e em tempo distintos. (CHARAUDEAU, 2007). O corpus de análise é constituído por vinte notícias de popularização da ciência publicadas nas revistas Ciência Hoje e VEJA entre os meses de janeiro e junho de 2010. O exame dos textos revela o alinhamento dos procedimentos linguísticos e discursivos da referenciação e do discurso relatado à representação dos sujeitos integrantes da instância de recepção midiática, o que evidencia o atendimento à visada de captação do contrato de comunicação da mídia, mediante a qual a instância de produção midiática deve alcançar os sujeitos da instância de recepção. A descrição dos elementos dos contratos de comunicação das duas instâncias de produção possibilita relacionar a configuração linguística dos textos que resultam das trocas de linguagem, a partir da análise dos procedimentos da referenciação e do discurso relatado, aos graus de popularização da ciência representados pelas revistas Ciência Hoje e VEJA. / This paper considers that the popularization of science corresponds to the phenomenon of social communication of knowledge from science to society in general (HILGARTNER, 1990; CORNELIS, 1998; MYERS, 2003; CALSAMIGLIA; DIJK, 2004) and assumes the existence of degrees of popularization of science as postulated by Hilgartner (1990) and by Jacobi (1999, 1990, 1988, 1985 and 1984), for whom the communication of science occurs in various contexts, from the most restricted and specialized to the most general and public. In claiming that the popularization of science is a language exchange undertaken by individuals who, in a specific communicative situation have certain purposes, this paper is affiliated with the Charaudean idea of a communication contract which corresponds to an agreement to identify the conditions for achieving the exchange of language by individuals. (CHARAUDEAU, 2008a, 2008b, 2007, 2005, 2004 and 2001b). The variations in public scientific communication (i) arise from the components of the contracts of communication that govern the exchange of language and (ii) lead to differences in the linguistic materiality of the texts, which are the products of acts of communication. The objective of this research is to verify the effect of degrees of popularization of science in the media by linguistic and discursive categories corresponding to referral and reported speech. In linking to the constructivist conception of reference, described by Mondada and Dubois (2003) and additionally represented by Apothelóz and Reichler-Béguelin (1995), by Apothelóz (2003) and by Cavalcante (2011), this research assumes the systematization of Apothelóz e ReichlerBéguelin (1995) in relation to the operations employed by the interlocutors in the process of reference evolution and the systematization related to the referencing processes proposed by Cavalcante (2011) and in particular by Apothelóz (2003). In addition, this research is based on the semio linguistic definition in which reported speech corresponds to the act of enunciation in which a speaker, at a given location and time, reports to a third party the content of a discussion between one speaker and another in a different location and time. (CHARAUDEAU, 2007). The corpus of analysis consists of twenty popular science news articles published in the journals Ciência Hoje and VEJA between the months of January and June 2010. Examining the texts reveals the alignment of linguistic and discursive referencing procedures and the reported speech related to the representation of individuals that make up the receiving audience of the media in question. This evidences the objective of securing the communication contract of the media whereby the instance of media production should reach the subjects of the media reception. The description of the elements of the communication contracts of the two instances of production permits the relating of the linguistic configuration of the texts, which results in the exchange of language by way of analysis of the referral procedures and the reported speech, to the degree of popularization of science represented by the magazines Ciência Hoje and VEJA.

Made available in DSpace on 2016-04-27T19:31:02Z (GMT). No. of bitstreams: 1 Cleonice Elias da Silva.pdf: 1450941 bytes, checksum: 7db5ba4ea50f7f3c058645bcd8f288b1 (MD5) Previous issue date: 2015-02-27 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This research aimed to analyze the film Rio, 40 Degrees (Nelson Pereira dos Santos, 1955) and the mobilization occurring between Brazilian intellectuals after censorship by the colonel and chief of police Geraldo Menezes Cortes. To study this mobilization we analyze texts published in the Brazilian press in the second half of 1955. The sources of this research correspond to the film and the press articles published in that period. An important guiding principle for reflection that we present are the questions raised by Marcelo Ridenti (2000, 2010) about the appreciation of the people in the Brazilian culture and the revolutionary brazilianness. We propose a new analytical bias to think the film as historical and aesthetic document, this bias concerns the aesthetic and ideological project of national-popular. In the case of mobilization that emerged after the censorship of the film, we stated that it gave discussions on film production in Brazil, touting the issues surrounding the early '50s Cinema Congress, the main one, the defense of national cinema. However, the proportions assumed by the mobilization in support of the release of the film, printed a new dynamic in discussions of the Cinema Congress / Esta pesquisa tem como objetivo analisar o filme Rio, 40 Graus (Nelson Pereira dos Santos, 1955) e a mobilização surgida entre os intelectuais brasileiros após a sua censura pelo coronel e chefe de polícia Geraldo Menezes Côrtes. Para estudar essa mobilização, analisaremos textos publicados na imprensa brasileira no decorrer do segundo semestre de 1955. As fontes desta pesquisa correspondem ao filme e aos textos da imprensa publicados no referido período. Um eixo norteador importe para a reflexão que apresentamos são as questões trazidas por Marcelo Ridenti (2000, 2010) sobre a valorização do povo na cultura brasileira e a brasilidade revolucionária. Proporemos um novo viés analítico para pensar o filme como documento histórico e estético. Esse viés diz respeito ao projeto estético e ideológico do nacional popular. Tratando-se da mobilização surgida após a censura do filme, afirmaremos que ela proporcionou discussões sobre a produção de filmes no Brasil, agenciando questões presentes nos congressos de cinema de inícios dos anos 50, sendo a principal delas a defesa do cinema nacional. Todavia, as proporções assumidas pela mobilização em defesa da liberação do filme imprimiram uma nova dinâmica nas discussões realizadas nos congressos de cinema

The paper compares electricity production between the semi-submersible and the spar-buoy floating wind turbine systems under normal, stochastic and extreme wind conditions at Utsira Nord site located on the Norwegian continental shelf in the North Sea. The analysis of complex behavior of the floating wind turbine system and the fluid-structure interaction is performed in aero-servo-hydro-elastic code ASHES. The results indicate a slightly better energy performance of the semi-submersible than the spar in all load cases but one. The pitch and heave degrees of freedom are evaluated as the most relevant for the power output. It is shown that pitch and heave platform motions have smaller displacement in the semi-submersible floater than in the spar under average environmental conditions and at the rated wind speed operating range. The simulation also confirmed that the energy yield is very sensitive to the magnitude of the loads: the spar performed best under mild environmental conditions, while the semi-submersible was better under medium environmental conditions. Small difference in energy yield is attributed to the same baseline blade and external controller properties used for both floaters where generator torque was kept constant to limit the power excursions above the rated power. The method proposed under this paper has demonstrated that a good approximation of the energy performance of the floating wind turbine system can be performed in a fast and effective manner.

No description available.

Nesta pesquisa foram estudadas morfologias e posições do relevo que apresentam solos e depósitos com regimes hídricos caracterizados pela saturação temporária ou permanente, tendo os seguintes objetivos: (i) caracterização dos solos e depósitos presentes no setor inferior de vertentes e em fundos de vale, incluindo planícies fluviais, com ênfase em suas propriedades hidromórficas; (ii) identificação de graus de hidromorfia nos solos e depósitos desses setores e morfologias, e representação de sua variabilidade espacial; (iii) elaboração de proposições a respeito do regime de saturação hídrica nos setores estudados e de sua relação com os graus de hidromorfia identificados; (iv) elaboração de proposições sobre tendências espaciais hidrodinâmicas associadas à inundação fluvial nas áreas de planície. Sob o aspecto metodológico, a pesquisa foi desenvolvida de acordo com os princípios da abordagem geossistêmica, apresentando uma análise integrada que buscou identificar as inter-relações entre as variáveis pesquisadas. Para tal estudo, foram selecionados dois perfis transversais na Alta Bacia Hidrográfica do Rio Cotia, que abrangeram o setor inferior de vertentes e fundos de vale, um deles com planície fluvial. Ao longo desses perfis transversais foram realizados os seguintes levantamentos e procedimentos: (i) levantamento morfométrico e construção de gráficos dos perfis; (ii) descrição dos atributos morfológicos dos solos e depósitos; (iii) monitoramento dos níveis dágua do lençol freático ou lençol suspenso nos pontos de descrição. A caracterização e análise detalhadas das propriedades hidromórficas revelaram gradações de intensidade nas mesmas, e, a partir dessa base, desenvolveu-se uma proposta para classificação dos solos e depósitos segundo graus de hidromorfia. Foram construídas representações gráficas bidimensionais que ilustraram a sucessão vertical e lateral de horizontes pedogenéticos e camadas com diferentes graus de hidromorfia ao longo dos setores e morfologias estudadas. Desta maneira, foram identificadas tendências gerais no que se refere à distribuição espacial dos graus de hidromorfia e à relação desses graus com o regime de saturação hídrica. Um dos padrões identificados consistiu no aumento do grau de hidromorfia dos perfis verticais de solos e depósitos com o aumento da profundidade, que está associado a um maior tempo de duração das condições de saturação hídrica nos horizontes mais profundos. Também foram observadas diferenças significativas na intensidade das propriedades hidromórficas das vertentes, quando comparadas às áreas de fundos de vale, incluindo a planície fluvial. Neste sentido, foram identificados graus de hidromorfia mais baixos nos horizontes A e B dos pontos localizados nas vertentes, e graus mais elevados nos horizontes A e B dos pontos localizados nos fundos de vale. Essas diferenças na ocorrência dos graus de hidromorfia foram atribuídas a distintos regimes de saturação hídrica, sendo que, de maneira geral, os horizontes pedogenéticos e as camadas com graus de hidromorfia elevados estão sujeitos a condições de saturação hídrica de maior duração ou permanentes, quando comparados àqueles que possuem graus de hidromorfia mais baixos, nos quais os eventos de saturação hídrica tem menor duração e/ou ocorrem com menor frequência. Com relação às proposições referentes à inundação fluvial na planície estudada, foram identificadas morfologias que recebem preferencialmente os fluxos fluviais da inundação e apresentam taxas de deposição mais elevadas, e setores com taxas de deposição mais baixas nos quais a inundação é menos frequente e há predomínio da deposição de sedimentos finos. / In this research we studied morphologies and relief positions with soils and deposits with moisture regimes characterized by temporary or permanent water saturation, with the following objectives: (i) characterization of soils and deposits located in lower slope sectors and valley bottoms, with an emphasis on their hydromorphic properties; (ii) identification of degrees of hydromorphy in the soils and deposits of these sectors and morphologies, and representation of their spatial variability; (iii) development of propositions about the regime of water saturation in the studied areas and its relationship with the degrees of hydromorphy; (iv) development of propositions about the hydrodynamics of floods in the studied floodplain. Regarding the methodological aspect, the research was conducted according to the principles of the geosystemic approach, presenting an integrated analysis which considered the inter-relations among the studied variables. For this study, we selected two cross profiles in the Cotia Drainage Basin, comprising lower slope sectors and valley bottoms, including a floodplain. Along these cross profiles, the following surveys were conducted: (i) topographic survey and construction of cross section graphics; (ii) description of the morphological attributes of soils and deposits, including detailed description of their hydromorphic properties; (iii) monitoring the water levels of the water table and perched water tables in the sites of description. The detailed characterization and analysis of the hydromorphic properties revealed gradations of intensity in them, and, based primarily on this, we developed a proposal for classification the soils and deposits of the study area according to degrees of hydromorphy. We built two-dimensional graphical representations which illustrated vertical and lateral successions of pedogenetic horizons or layers with different degrees of hydromorphy. Thus, general trends were identified in respect to the spatial distribution of the degrees of hydromorphy and in respect to its relationship with the regime of water saturation. One of the patterns identified consisted in the increase of the degree of hydromorphy in the soil profiles with increasing depth, associated with a longer duration of water saturation conditions in the deeper horizons. It were also observed significant differences in the intensity of the hydromorphic properties of the slopes, when compared to the valley bottom areas, including the floodplain. In this regard, lower degrees of hydromorphy were identified in the A and B horizons in the slope sectors, and higher degrees in the A and B horizons in the valley bottom areas. Such differences in the degree of hydromorphy were ascribed to distinct regimes of water saturation, considering that, in general, the horizons and layers with higher degrees of hydromorphy are subject to water saturation conditions of longer duration, when compared to those classified according to lower degrees of hydromorphy, in which the water saturation events have shorter duration and/or have lower frequency. Concerning the propositions about the hydrodynamics of floods in the studied floodplain, we identified morphologies that preferentially receive the overflowing river flows and have higher deposition rates, and sectors with lower deposition rates, where flooding is less frequent and there is a predominance of fine sediments deposition.

<p>Real-time MRI scanning is used to visualize tissue and organs in motion. The real-time approach requires new interaction techniques to facilitate interaction with the scanning plane. The aim of this thesis is to investigate the use of input with six degrees of freedom – 6DOF. An overview over existing 6DOF input devices is given. Three devices are chosen for implementation and evaluation, Flock of Birds, SpaceBall and SpaceMouse. </p><p>A simulator application is developed to test the different input devices. The simulator purpose is to imitate the real-time scanning situation. To be able to evaluate speed andaccuracy of the different interaction techniques, methods for measuring time and error are developed. A statistical survey is done on two different tasks to gather data of the interaction. The data is analyzed and the result is that the test subjects find the SpaceMouse superior to the other devices thanks to its kinesthetic feed-back properties and ergonomic benefits. However, the statistical data shows that Flock of Birds is the fastest device and no great difference is showed in accuracy between Flock of Birds and SpaceMouse. SpaceBall was the device that generated the least satisfying data.</p>

The research presented in this thesis describes a substantial part of the design of a prototypical surgical training simulator. The results are intended to be applied in future simulators used to educate and train surgeons for bone milling operations. In earlier work we have developed a haptic bone milling surgery simulator prototype based on three degrees-of-freedom force feedback. The contributions presented here constitute an extension to that work by further developing the haptic algorithms to enable six degrees-of-freedom (6-DOF) haptic feedback. Such feedback is crucial for a realistic haptic experience when interacting in a more complex virtual environment, particularly in milling applications.The main contributions of this thesis are:The developed 6-DOF haptic algorithm is based on the work done by Barbic and James, but differs in that the algorithm is modified and optimized for milling applications. The new algorithm handles the challenging problem of real-time rendering of volume data changes due to material removal, while fulfilling the requirements on stability and smoothness of the kind of haptic applications that we approach. The material removal algorithm and the graphic rendering presented here are based on the earlier research. The new 6-DOF haptic milling algorithm is characterized by voxel-based collision detection, penalty-based and constraint-based haptic feedback, and by using a virtual coupling for stable interaction.Milling a hole in an object in the virtual environment or dragging the virtual tool along the surface of a virtual object shall generate realistic contact force and torque in the correct directions. These are important requirements for a bone milling simulator to be used as a future training tool in the curriculum of surgeons. The goal of this thesis is to present and state the quality of a newly developed 6-DOF haptic milling algorithm. The quality of the algorithm is confirmed through a verification test and a face validity study performed in collaboration with the Division of Orthopedics at the Karolinska University Hospital. In a simulator prototype, the haptic algorithm is implemented together with a new 6-DOF haptic device based on parallel kinematics. This device is developed with workspace, transparency and stiffness characteristics specifically adapted to the particular procedure. This thesis is focuses on the 6-DOF haptic algorithm. / QC 20120226

Today’s telecommunication cabinets use Electro Magnetic Compliance (EMC) screens in order to reduce electromagnetic noise that can cause some miss functions in electronic equipment. Many radio base stations (RBSs) use a 90-degree building architecture: the flow inlet is perpendicular to the EMC screen, which creates a complex flow, with a 90-degree air turn, expansions, compressions, perforated plates and PCBs. It is of great interest to study how the EMC screen interacts with the rest of components and analyze the total pressure drop and how much the flow pattern changes due to the placement of the screen. Velocity, pressure and temperature measurements as well as flow pattern visualizations have been carried out to gain good insight into the flow and heat transfer characteristics in a subrack model of an RBS. Furthermore, these measurements have been very useful for validating detailed CFD models and evaluating several turbulence models. Nowadays, industrial competition has caused a substantial decrease in the time-to-market of products. This fact makes the use of compact models in the first stages of the design process of vital importance. Accurate and fast compact models can to a great extent decrease the time for design, and thus for production. Hence, to determine the correlations between the pressure drop and flow pattern on the PCBs as a function of the geometry and the Reynolds number, based on a detailed CFD parametric study, was one objective. Furthermore, the development of a compact model using a porous media approach (using two directional-loss coefficients) has been accomplished. Two correlations of these directional loss coefficients were found as a function of the geometry and Reynolds number. / QC 20100630

High-quality preschool education produces substantial long-term educational, social, and economic benefits, but large benefits occur only when teachers are professionally prepared and adequately compensated. Qualifying the teacher candidates depends on many interrelated components of a teacher education. The aim of this study is to evaluate the student selection policy, decision-making policy, recruitment policy, teacher candidates&rsquo / educational profiles, faculty development and assignment policy, curriculum and instruction, and the graduates&rsquo / competences from the perspectives of the faculty members in the preschool teacher education program. For this purpose, decision-oriented program evaluation CIPP model is taken as a framework. In order to reach in-depth and detailed information from the participants, study is designed as a qualitative phenomenological research. Participants are selected through purposeful sampling strategies that include criterion sampling and snowball sampling procedures from the population of 150 academicians in the 55 preschool teacher education program in Turkey. Data is collected through semi-structured interviews and open-ended questionnaires from 58 participants. According to the content analysis, findings indicated that there is need for the additional tests in the student selection, improvement in the faculty development policy, accreditation, faculty initiative in curriculum planning and implementing, alternative strategies in practicum, and collaboration of the local authorities and the faculties in the recruitment policy of the graduates. In this respect, it is believed that the findings will pave the way for the program developers to reform the program accordingly, will give further insights about the real experiences of the academicians and take their suggestions to improve the program and will help the researchers to raise some new questions about the preschool teacher education program to investigate.

High-quality preschool education produces substantial long-term educational,social, and economic benefits, but large benefits occur only when teachers are professionally prepared and adequately compensated. Qualifying the teacher candidates depends on many interrelated components of a teacher education. The aim of this study is to evaluate the student selection policy, decision-making policy, recruitment policy, teacher candidates&rsquo / educational profiles, faculty development and assignment policy, curriculum and instruction, and the graduates&rsquo / competences from the perspectives of the faculty members in the preschool teacher education program. For this purpose, decision-oriented program evaluation CIPP model is taken as a framework. In order to reach in-depth and detailed information from the participants, study is designed as a qualitative phenomenological research. Participants are selected through purposeful sampling strategies that include criterion sampling and snowball sampling procedures from the population of 150 academicians in the 55 preschool teacher education program in Turkey. Data is collected through semi-structured interviews and open-ended questionnaires from 58 participants. According to the content analysis, findings indicated that there is need for the additional tests in the student selection, improvement in the faculty development policy, accreditation, faculty initiative in curriculum planning and implementing, alternative strategies in practicum, and collaboration of the local authorities and the faculties in the recruitment policy of the graduates. In this respect, it is believed that the findings will pave the way for the program developers to reform the program accordingly, will give further insights about the real experiences of the academicians and take their suggestions to improve the program and will help the researchers to raise some new questions about the preschool teacher education program to investigate.