O grupo de estafilococos não-aureus (SNA), frequentemente isolados de quartos mamários com mastite subclínica, ápice do teto e ambiente, possue variabilidade ecológica que desafia a compreensão da patogenia a estes atribuída. Os fatores espécie-específicos associados à essa infecção ainda não foram identificados e a susceptibilidade difere entre vacas e quartos e promove diferentes perfis de infecção. Com o objetivo de avaliar a resistência à fagocitose e atividade microbicida, comparou-se a viabilidade, a produção intracelular de espécies reativas de oxigênio (ERO) e a fagocitose de neutrófilos sanguíneos de vacas primíparas e multíparas frente a distintos isolados viáveis de estafilococos. Utilizou-se doze vacas sadias (seis primíparas e seis multíparas) em terço médio de lactação e SO isolados viáveis de estafilococos (38 SNA e 12 Staphylococcus aureus) de diferentes nichos ecológicos. A viabilidade de neutrófilos (P = 0,55), produção de ERO (P = 0,12) e atividade funcional dos fagócitos (P = 0,33) foram semelhantes entre as primíparas e multíparas testadas . Contudo, foram observadas diferenças (P &le;0,05) entre os distintos grupos de espécies e estirpes de estafilococos quanto ao estímulo da produção intracelular de ERO pelos neutrófilos e à fagocitose. S. chromogenes de origens distintas, ápice do teto (P = 0,01), infecção intramamária transiente (P < 0,01) e infecção intramamárias persistente (P < 0,01) estimularam mais a produção de ERO pelos neutrófilos do que as outras espécies. Todos isolados foram fagocitados pelos neutrófilos, mas S. chromogenes resistiram mais eficientemente que as outras espécies de SNA, principalmente, S. chromogenes isolados do ápice do teto (P < 0,01). S. haemolyticus isolados do ápice do teta (P = 0,02) e infecção intramamária transiente (P < 0,01), assim como, S. fleurettii (P < 0,01), foram substancialmente fagocitados do mesmo modo que S. aureus isolado de suabe nasa\\ (P = 0,03). Mais evidente do que possíveis variações entre as respostas mamárias de primíparas e multíparas é a variação entre os SNA. Quanto mais adaptado à mama, maior resistência à fagocitose. / The group of non-aureus staphylococci (NAS), often isolated from mammary quarters with subclinical mastitis, teat apex and environment, has ecological variability that challenges the understanding of the pathogenesis attributed to them. The species-specific factors associated with this infection have not yet been identified and the susceptibility differs between cows and quarters and promotes different infection profiles. In order to evaluate the resistance to phagocytosis and I or microbicidal activity of these pathogens, the viability , intracellular production of reactive oxygen species (ROS) and blood neutrophil phagocytosis of primiparous and multiparous cows were compared to different viable isolates of staphylococci. Twelve healthy cows (six primiparous and six multiparous) were used in the middle third of lactation and 50 viable isolates of staphylococci (38 SNA and 12 Staphylococcus aureus) from different ecological niches. Neutrophil viability (P = 0.55), ROS production (P = 0.12) and phagocyte functional activity (P = 0.33) were similar among the primiparous and multiparous groups tested. However, differences (P &lt;0.05) between the different groups of species and strains of staphylococci were observed for the stimulation of intracellular ROS production by neutrophils and phagocytosis. S. chromogenes of different origins, ceiling apex (P =0.01), transient intramammary infection (P &lt;0.01) and persistent intramammary infection (P &lt;0 .01) further stimulated the production of ROS by neutrophils than species. All isolates were phagocytosed by neutrophils, but S. chromogenes resisted more efficiently than the other SNA species, especially S. chromogenes isolated from the apex of the ceiling (P &lt;0.01). S. haemolyticus isolated from apex to ceiling (P =0.02) and transient (P &lt;0.01) intramammary infection, as well as S. fleurettii (P &lt;0.01), were substantially phagocytosed in the same manner as S. aureus isolated from nasal swab (P = 0.03). More evident than possible variations between mammary responses of primiparous and multiparous is the variation between ANS. The more adapted to the breast, the greater resistance to phagocytosis.

Η παρούσα διπλωματική εργασία βρίσκεται στον ευρύτερο χώρο της μαθηματικής στατιστικής θεωρίας των γραφημάτων. Κύριος στόχος μας, όπως αναφέρει και ο τίτλος, είναι η μοντελοποίηση γραφημάτων, με απώτερο σκοπό την προσαρμογή, προσομοίωση και διάγνωση αυτών μέσω μοντέλων εκθετικών τυχαίων γραφημάτων. Το πρώτο κεφάλαιο δίνει μια συνοπτική παρουσίαση της διατύπωσης του προβλήματος και της θεωρίας των μοντέλων των εκθετικών τυχαίων γραφημάτων. Η βασική ιδέα είναι να θεωρήσουμε ως τυχαίες μεταβλητές τους δυνατούς δεσμούς μεταξύ των κόμβων ενός δοθέντος γραφήματος. Η γενική μορφή ενός μοντέλου εκθετικά τυχαίου γραφήματος καθορίζεται από κάποιες υποθέσεις σχετικές με τις εξαρτήσεις μεταξύ αυτών των τυχαίων μεταβλητών. Παρουσιάζουμε κάποιες διαφορετικές υποθέσεις εξάρτησης και τα αντίστοιχα μοντέλα, όπως τα γραφημάτα Bernoulli, τα δυαδικώς - ανεξάρτητα και τα τυχαία γραφήματα Markov. Επίσης, εξετάζουμε την ενσωμάτωση των χαρακτηριστικών, που μπορούν να έχουν οι κόμβοι, σε μοντέλα κοινωνικής επιλογής, δηλαδή, σε περιπτώσεις που οι συνδέσεις του γραφήματος μπορούν να προβλέψουν τα χαρακτηριστικά των κόμβων. Συνοψίζουμε κάποιες καινούργιες υποθέσεις εξάρτησης, που είναι πολυπλοκότερες των πρώτων τέτοιων υποθέσεων της σχετικής βιβλιογραφίας. Συζητούμε τις διαδικασίες της στατιστικής εκτίμησης, συμπεριλαμβανομένων των νέων μεθόδων για την εκτίμηση της μέγιστης πιθανοφάνειας Monte Carlo. Τέλος, παρουσιάζουμε τις νέες προδιαγραφές για μοντέλα εκθετικών τυχαίων γραφημάτων, που έχουν προτείνει οι Snijders et al., οι οποίες βελτιώνουν σημαντικά τα αποτελέσματα της προσαρμογής εμπειρικών δεδομένων για εκθετικά μοντέλα ομοιογενών τυχαίων γραφημάτων Markov. Επιπλέον, οι νέες αυτές προδιαγραφές μας βοηθούν να αποφύγουμε το πρόβλημα του σχεδόν-εκφυλισμού, που συχνά παρεμβάλλεται στη διαδικασία της προσαρμογής μοντέλων εκθετικών τυχαίων γραφημάτων Markov, ιδιαίτερα όταν αυτά προέρχονται από εμπειρικά δεδομένα, που έχουν υψηλό βαθμό μεταβατικότητας. Η μελέτη μιας τέτοιας νέας στατιστικής με υψηλότερης τάξης μεταβατικότητα επιτρέπει την εκτίμηση των παραμέτρων των μοντέλων των εκθετικών γραφημάτων σε πολλές (αλλά όχι όλες) περιπτώσεις, στις οποίες διαφορετικά θα ήταν αδύνατο να εκτιμηθούν οι παράμετροι των μοντέλων των ομοιογενών γραφημάτων Markov. Στο δεύτερο, τρίτο και τέταρτο κεφάλαιο της εργασίας εφαρμόζουμε τις παραπάνω μεθόδους, αντιστοίχως, για τρείς αναλύσεις εμπειρικών δεδομένων: το δίκτυο Florentine, το δίκτυο Faux Magnolia High και τα δίκτυα IPRED και SWPAT. Σε αυτά τα κεφάλαια, παρουσιάζουμε τις διαδικασίες της προσαρμογής, προσομοίωσης και διάγνωσης με παράθεση των αντίστοιχων εντολών, χρησιμοποιώντας τα πακέτα statnet - ermg και sna, τα οποία δουλεύουν στο περιβάλλον του πακέτου ελεύθερου λογισμικού R. Τέλος, στο παράρτημα της εργασίας δίνουμε μια σύντομη εισαγωγή στο περιβάλλον R και σε κάποιες γενικές εντολές αυτού. / This specific project has to do with mathematical statistical graph theory. Our main target is to fit, simulate and diagnose models through exponential random graph models. In the first chapter we give a short presentation of the problem and the theory of exponential random graph models. The main idea is to consider each tie of a given network (graph) as a random variable. The general form of an exponential random graph model is defined from some relative assumptions that have to do with the dependence between those random variables. We present some different dependence assumptions and the corresponding models, such as Bernoulli graphs, dyadic-independent and Markov random graphs. We also examine the incorporation of the characteristics that a node may have in social networks. We also discuss the process of statistical estimation, including three new methods for the estimation of Monte Carlo maximum likelihood. Finally, we present new specifications for exponential random graph models, which Snijders et al. have proposed. These new specifications allow us to avoid the problem of degeneration. In the second, third and fourth chapter we apply the above methods in order to analyze Florentine network data, Faux Magnolia High data and IPred And Swpat data. In those chapters, we present the procedures of fit, simulate and diagnose exponential random graph models displaying the corresponding commands of statnet-ergm and sna packages that work in R. Finally we give a short introduction to R and to some relative commands.

This research sought to explore the patterns of co-authorship collaboration between African and international authors who have published together in journals relating to the field of social psychology. Bibliographic data was used to extract and produce social network maps of academic co-author collaborations in which one of the authors was African or affiliated to an author from an African country. These patterns of collaboration were analysed using social network analysis and it was found that, on average, African authors are poorly interconnected with other international authors in the field of social psychology and are also poorly interconnected with other African authors across the continent. It is likely that these structures of collaboration constrain the ability of African authors to produce their own relevant knowledge within the field of social psychology, in that their collaborations are limited and usually mediated by international connections. This pattern of interconnection makes it more likely that African social psychologists will operate within paradigms generated by academics in international and well-resourced countries and militates against the development of African paradigms. / Thesis (M.Soc.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2014.

隨著網路資訊技術的進步，同時也建構了人與人之間知識傳遞與情感維繫的各種不同社會網路形式與空間，透過瞭解人際之間的社會網路運作，不僅關係個人是否能成功實現目標，亦可協助組織解決問題與意識傳遞及運行。加上近年來「性別主流化」(Gender mainstreaming)政策影響，從過往兩性到現今多元性別的轉變，希望建立尊重多元性別的態度及平等相處的互動。本研究試圖將多元性別族群意識傳遞與社會網路分析技術做結合，以社會網路分析方法，來描述網路上多元性別族群意識傳遞之社會活動的特徵與其意義，對多元性別族群網路使用者的網上集體行為進行剖析，以社會網路分析方法呈現，從人與人的互動分析中，探討多元性別族群意識如何傳遞。並延續看見尊重多元性別做努力，不僅瞭解性別的多樣差異，更重要的是結合資訊管理方式，營造一個資訊管理融合社會多元性別族群友善的環境與資源連結。 / With the advancement of Internet and information technology, various online social platforms have been constructed for interpersonal affiliation and knowledge dissemination. Understanding how the interpersonal social network works helps not only a person fulfill goals but an organization resolve problems and spread its ideas. In recent years, under the influences of the gender mainstreaming policy, the idea of two genders has shifted to the idea of various genders with the hope to encourage a tolerant attitude toward LGBTIQ community and promote equal interaction among all people. The study intends to combine the dissemination of LGBTIQ community awareness and social network analysis. The intention is to depict online dissemination of LBGT community awareness and to dissect the collective behaviors of LGBTIQ community with social network analysis. The analysis of interpersonal interaction is employed to see how the LGBTIQ community awareness has been disseminated. The result not only helps understand differences among genders but also gives insights to know that the most important is to combine LGBTIQ community awareness with information management with the purpose to create a friendlier environment for LBGTIQ community combined with information management.

A noção de rede social e os métodos em análise em redes sociais (ARS) tem atraído considerável interesse e curiosidade para a comunidade científica nestas últimas décadas, assim como a crescente fascinação pública sobre as relações mais complexas da sociedade moderna. A ARS está baseada na importância de relações entre a interação de unidades. Numa análise de rede social a observação dos atributos sociais de um ator pode ser entendida como padrão ou como uma estrutura de relação entre as unidades. Desta forma, quando empregados a uma perspectiva de rede, é possível estudar os padrões de estruturas relacionais diretamente, sem referência a atributos dos indivíduos envolvidos. Na análise convencional de redes sociais a distância geográfica (ou geoespacial) não tem efeito mapeado na rede. Quando utilizada, esta informação normalmente adquire caráter de um atributo complementar associado individualmente a cada ator (ou aglomerados de atores) da própria rede. O objetivo deste trabalho é demonstrar, numa escala local (de maneira mais granular) como o posicionamento geoespacial dos atores, considerado como elementos da rede, pode desvendar aspectos significativos do comportamento destes que não seriam revelados em análises convencionais. No estudo de caso utilizou-se ainda conceitos de outras disciplinas, como a Matemática e a Física, para verificar a capilaridade do fluxo da informação da rede em três perspectivas distintas: a social, a espacial e a socioespacial. O trabalho descreve o campo emergente de pesquisa em ARS, abordando também questões fundamentais sobre como estas diferentes perspectivas podem trazer resultados mais assertivos para orientar uma tomada de decisão no mercado. / The notion of social network and methods of analysis in social networks (SNA) has attracted considerable interest and curiosity to the scientific community in recent decades, as well as a growing public fascination about the more complex relationships of modern society. ARS is based on the importance of relations between the interaction of units. In social network analysis the observation of the attributes of a social actor can be understood as standard or as a structure of relationship between the units. Thus, when used at a network perspective, one can study the patterns of relational structures directly, without reference to attributes of the individuals involved. In the conventional analysis of social networks, geographical distance (or geospatial) has no effect on the mapped network. When used, this information usually takes the character of an additional attribute associated with the individual actor (or clusters of actors) of the network itself. The objective of this study is to demonstrate a "local level" (in a more "granularity") as the geospatial positioning of the actors, considered as elements of the network, can unlock significant aspects of their behavior that would not be revealed in conventional analysis. In the case study is also used concepts from other disciplines such as mathematics and physics, to verify the capillary flow of network information in three different perspectives: social, geospatial and sociospatial. The paper describes the emerging field of research in ARS, also addressing fundamental questions about how different perspectives can bring results more assertive for making initial decision.

Submitted by Aelson Maciera (aelsoncm@terra.com.br) on 2017-10-25T18:10:45Z No. of bitstreams: 1 DissWAO.pdf: 2144900 bytes, checksum: 1ae2b51ca6cabfb039762c2dbf9522d6 (MD5) / Approved for entry into archive by Ronildo Prado (producaointelectual.bco@ufscar.br) on 2017-10-31T11:20:14Z (GMT) No. of bitstreams: 1 DissWAO.pdf: 2144900 bytes, checksum: 1ae2b51ca6cabfb039762c2dbf9522d6 (MD5) / Approved for entry into archive by Ronildo Prado (producaointelectual.bco@ufscar.br) on 2017-10-31T11:20:23Z (GMT) No. of bitstreams: 1 DissWAO.pdf: 2144900 bytes, checksum: 1ae2b51ca6cabfb039762c2dbf9522d6 (MD5) / Made available in DSpace on 2017-10-31T11:45:30Z (GMT). No. of bitstreams: 1 DissWAO.pdf: 2144900 bytes, checksum: 1ae2b51ca6cabfb039762c2dbf9522d6 (MD5) Previous issue date: 2017-06-30 / Outra / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / The present study has the objective to investigate the network conformation of scientific collaboration's postdegree program in Sducation located in Brazil's Southwest. Use it in two methodologies, the social media analysis and the bibliometry. The scientific production was collected in lattes plataform deriving from curriculum of accredited teachers in 15 postdegree programs. Considering datas by two last tests of CAPES (triennia 2007-9 2010-2). The bibliographic records was extracted between scriptlattes software. The Vantage Point® software and UCINET was used to systematization and analysis of the results. Found that the area published on average 60% of articles in collaboration and there is a decrease (5%) in articles with authors individual. there is a uniform distribution of articles between the strata Qualis, ranging from 10% to 15%. according to the Qualis area, 14% of articles not total score for the program. there is a diversity in the profile of collaboration of the programs, some have more than 70% of its production in collaboration, and others with a maximum of 40%. the protagonists in collaboration scientific are programs level 6 (ufscar-and and) and level 5 (ufscar). the level 7 and most of the level 6 do not appear prominently. there are no greater approach between teachers of the programs for publication, for having higher level. the higher the average articles by program, the greater the possibility of publication joint. specific areas of education with other areas of knowledge (psychology, health, biology, etc.), impact the shape of the scientific production. / O presente estudo teve como objetivo investigar a configuração das redes de colaboração científica dos Programas de Pós-Graduação em Educação localizados no Sudeste do Brasil. Utilizou-se de duas metodologias, a Análise de Redes Sociais e a Bibliometria. A produção científica foi coletada na Plataforma Lattes oriunda dos currículos de docentes de credenciados em 15 programas de pós-graduação considerando dados das duas últimas avaliações da Capes (triénios 2007-9 e 2010-2). Os registros bibliográficos de 4.826 artigos foram extraídos através do software ScriptLattes. Os softwares Vantage Point® e UCINET foram usados para sistematização e análise dos resultados. Constatou que a área publicou em média 60% dos artigos em colaboração e há uma diminuição (5%) nos artigos com autores individuais. Há uma distribuição uniforme dos artigos entre os estratos Qualis, com variação entre 10% e 15%. De acordo com o Qualis da área, 14% dos artigos não somam pontuação para o programa. Existe uma diversidade no perfil de colaboração dos programas, alguns possuem mais de 70% da sua produção em colaboração, e outros com no máximo 40%. Os protagonistas na colaboração científica são os programas nível 6 (UFSCar-EE) e nível 5 (UFSCar). Os de nível 7 e maioria do nível 6 não aparecem com destaque. Não há uma maior aproximação entre os docentes dos programas para publicação, por terem maior nível. Quanto maior a média de artigos por programa, maior a possibilidade de publicação conjunta. Áreas específicas da educação com outras áreas de conhecimento (psicologia, saúde, biologia, etc.), impactam a forma da produção científica.

A noção de rede social e os métodos em análise em redes sociais (ARS) tem atraído considerável interesse e curiosidade para a comunidade científica nestas últimas décadas, assim como a crescente fascinação pública sobre as relações mais complexas da sociedade moderna. A ARS está baseada na importância de relações entre a interação de unidades. Numa análise de rede social a observação dos atributos sociais de um ator pode ser entendida como padrão ou como uma estrutura de relação entre as unidades. Desta forma, quando empregados a uma perspectiva de rede, é possível estudar os padrões de estruturas relacionais diretamente, sem referência a atributos dos indivíduos envolvidos. Na análise convencional de redes sociais a distância geográfica (ou geoespacial) não tem efeito mapeado na rede. Quando utilizada, esta informação normalmente adquire caráter de um atributo complementar associado individualmente a cada ator (ou aglomerados de atores) da própria rede. O objetivo deste trabalho é demonstrar, numa escala local (de maneira mais granular) como o posicionamento geoespacial dos atores, considerado como elementos da rede, pode desvendar aspectos significativos do comportamento destes que não seriam revelados em análises convencionais. No estudo de caso utilizou-se ainda conceitos de outras disciplinas, como a Matemática e a Física, para verificar a capilaridade do fluxo da informação da rede em três perspectivas distintas: a social, a espacial e a socioespacial. O trabalho descreve o campo emergente de pesquisa em ARS, abordando também questões fundamentais sobre como estas diferentes perspectivas podem trazer resultados mais assertivos para orientar uma tomada de decisão no mercado. / The notion of social network and methods of analysis in social networks (SNA) has attracted considerable interest and curiosity to the scientific community in recent decades, as well as a growing public fascination about the more complex relationships of modern society. ARS is based on the importance of relations between the interaction of units. In social network analysis the observation of the attributes of a social actor can be understood as standard or as a structure of relationship between the units. Thus, when used at a network perspective, one can study the patterns of relational structures directly, without reference to attributes of the individuals involved. In the conventional analysis of social networks, geographical distance (or geospatial) has no effect on the mapped network. When used, this information usually takes the character of an additional attribute associated with the individual actor (or clusters of actors) of the network itself. The objective of this study is to demonstrate a "local level" (in a more "granularity") as the geospatial positioning of the actors, considered as elements of the network, can unlock significant aspects of their behavior that would not be revealed in conventional analysis. In the case study is also used concepts from other disciplines such as mathematics and physics, to verify the capillary flow of network information in three different perspectives: social, geospatial and sociospatial. The paper describes the emerging field of research in ARS, also addressing fundamental questions about how different perspectives can bring results more assertive for making initial decision.

Submitted by Biblioteca de Pós-Graduação em Geoquímica BGQ (bgq@ndc.uff.br) on 2017-12-18T15:08:18Z No. of bitstreams: 1 Dissertação_Verônica de Souza Gomes_UNIRIO_2017.pdf: 2390659 bytes, checksum: 1d9ff7f83da9d70b3a822a7bacc7743b (MD5) / Made available in DSpace on 2017-12-18T15:08:18Z (GMT). No. of bitstreams: 1 Dissertação_Verônica de Souza Gomes_UNIRIO_2017.pdf: 2390659 bytes, checksum: 1d9ff7f83da9d70b3a822a7bacc7743b (MD5) / Universidade Federal Fluminense. Instituto de Química. Programa de Pós-Graduação em Geoquímica, Niterói, RJ / Esta pesquisa tem por objetivo investigar a estrutura científica do Programa de Pós-Graduação em Geociências (Geoquímica) da Universidade Federal Fluminense, tendo como referência os atores científicos, a fim contextualizar e verificar o desempenho do PPG-Geo/UFF, e contribuir com o alinhamento às diretrizes do SNPG. Tem-se como premissa que a complexidade da pesquisa científica envolve uma organização social dos atores na forma de rede. Neste sentido, a pesquisa é um estudo de caso, que parte de uma fase exploratória, que adota como metodologia uma pesquisa documental, Análise de Reses Sociais (ARS) e aplicação de questionário. O resultado contribui sistematicamente para identificar os atores que sustentam o campo científico da Geoquímica na UFF e suas comunidades epistêmicas, o conhecimento das práticas de produção e compartilhamento do conhecimento e de informações considerando a Política de Pós-Graduação no Brasil. Por fim, a contribuição da pesquisa para o campo da Geoquímica está representada na construção de diretrizes, entre elas a identificação de projetos já existentes a fim de atender a demanda do SNPG em relação à Educação Básica; ampliação da visibilidade do Programa por meio da implantação da plataforma ‘SOMOS UFF’; complementar a inserção de itens importantes para ampliação do conhecimento e da visibilidade no site do Programa; e o fortalecimento dos elos com a biblioteca, em busca de uma relação maior entre pesquisador e bibliotecário. Conclui-se que através das pesquisas, atividades desenvolvidas, relações estabelecidas, entre outros meios, o PPG-Geo/UFF na sua área de atuação vem contribuindo fortemente para o progresso da Ciência. / This research aims to investigate the scientific structure of the Graduate Program in Geosciences (Geochemistry) of Universidade Federal Fluminense, with reference to the scientific actors, in order to contextualize and verify the performance of PPG-Geo/UFF, and contribute to the alignment with the SNPG guidelines. The premise is that the complexity of scientific research involves a social organization of the actors in the form of network. In this sense, the research is a case study, which starts from an exploratory phase, which adopts as methodology a documentary research, Social Network Analysis (SNA) and questionnaire application. The result contributes systematically to identify the actors who sustain the scientific field of Geochemistry at UFF and their epistemic communities, knowledge production practices and knowledge sharing and information considering postgraduate policy in Brazil. Finally, the contribution of research to the field of Geochemistry is represented in building guidelines, including the identification of existing projects in order to meet the demand of SNPG in relation to basic education; increasing the visibility of the program through the implementation of the platform ‘We are UFF’; complementing the insertion of important items for broadening knowledge and visibility on the site of the Program; strengthening links with the library in search of a larger relationship between researchers and librarians. Concluding that through research, activities developed, relations established, among other means, the PPG-Geo/UFF in its area of action has been contributing strongly to the progress of S

Os dados espaciais têm sido utilizados para o monitoramento ambiental de consequências de acidentes com produtos químicos no transporte de produtos perigosos. A Infraestrutura de Dados Espaciais (IDE), que foi criada para a disponibilização e uso de dados espaciais, esbarra na ausência de políticas para dar suporte a essa realização. O objetivo principal deste trabalho é explorar o uso da teoria de Análise de Rede Social (ARS) para diagnosticar a articulação entre as organizações do setor, e discutir as políticas e acordos institucionais vigentes e criar um esquema conceitual de uma IDE para gerenciamento de acidentes relacionados ao Transporte Rodoviário de Produtos Perigosos (TRPP). Neste contexto, esta pesquisa identificou as instituições que tratam do tema TRPP, para que informações sobre o interesse no uso e compartilhamento de dados espaciais através de uma IDE pudessem ser coletadas através de entrevistas, e desta forma, consolidadas. As entrevistas foram aplicadas de forma presencial em 39 instituições. A aplicação da teoria Análise de Rede Social (ARS) pôde diagnosticar o fluxo dos dados entre as instituições através da representação gráfica das redes de disponibilização e utilização de dados espaciais entre as organizações participantes. A partir de então, foram analisados e discutidos os acordos vigentes para compartilhamento de dados espaciais. Os resultados compilados permitiram propor um esquema conceitual de uma IDE para apoio a desastres envolvendo o TRPP, para, então, prover a elaboração de metodologia para o suporte ao diagnóstico da articulação entre os diversos atores de uma IDE. A finalidade é a possível a formulação de políticas para disponibilização de dados espaciais para tomada de decisões preventivas e de enfrentamento de desastres. Os resultados indicaram que as 39 instituições compartilham dados espaciais entre si, ainda que nem sempre por acordos formais preestabelecidos. Constatou-se ainda que há um grande anseio por parte das instituições que fazem o gerenciamento de acidentes envolvendo o TRPP para que haja mecanismos legais para compartilhamento de dados estruturantes para planejamento territorial - para que o uso desses dados possa auxiliar na preparação, prevenção, gerenciamento e socorro imediato aos incidentes que envolvem o TRPP. / Spatial data have been used for environmental monitoring of chemical accidents on the road transportation of dangerous goods. The Spatial Data Infrastructure (SDI) has been created to availability and use of spatial data, however, it emphasizes that there are no policies to support this realization. The main aim of this work is to create a conceptual scheme of a Spatial Data Infrastructure (SDI) for management of transport of Dangerous Goods by road, focusing on the political context. It was identified the institutions that deal with the subject of road transportation of hazardous materials, Moreover the interviews could be consolidated. The interviews were administered by face, in 39 institutions. Interview data were ran in software UCINET, 2000 to obtain metrics related to centrality measures. The application of the theory of Social Network Analysis (ARS) could recognize the flow of data between institutions through the enrolled institutions. Furthermore, it was analyzed the network availability and use aspects of spatial data sharing between the organizations. Besides, the compiled results allowed to propose a conceptual scheme of a SDI to support technological disasters with road transportation of hazardous materials throw the SNA theory applied to investigation of spatial data sharing between different stakeholders to make prevention and risk management of the sector. Therefore, the analysis of the theory of Social Network Analysis (ARS) found that 39 (thirty-nine) institutions share spatial data between themselves, but not always in formal agreements previously established. It was further observed that there is a great desire on the part of the institutions that make the management of the accidents of this kind of transportation mode, so there are legal frameworks for data sharing for land cover uses, as a result the use of such data can be shared between different stakeholders to assist the preparedness, mitigation, response and recovery from incidents related to road dangerous goods transportation.

The field of social network analysis has expanded from the field of social science to the fields of human factors and ergonomics. There is a theory that suggest that one can use the social network methods and create an information network which describes the network from an information sharing perspective and and there are also theories which describes how social network analysis can be used study cognitive maps (mental models). This thesis touches both of these subjects in an attempt to investigate how social network analysis can be used together with real-time information as a data source to investigate the cognitive maps of individuals and comparing these maps with an organisations expected structure based on protocols. The study conducted showed that it was indeed possible to change the social network analysis method into an information based network which explains the origin of a mental model and to study information be- haviour, in a network, but there are still variables which needs to be studied further (e.g. failed information sharing and temporal aspects of information sharing).