Submitted by Aline Batista (alinehb.ufpel@gmail.com) on 2018-04-18T15:04:36Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_Diorgenes_Yuri_Leal_da_Rosa.pdf: 3317198 bytes, checksum: ffad37e3b8f5606e8102f983c5628ac8 (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-04-19T14:43:29Z (GMT) No. of bitstreams: 2 Dissertacao_Diorgenes_Yuri_Leal_da_Rosa.pdf: 3317198 bytes, checksum: ffad37e3b8f5606e8102f983c5628ac8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-04-19T14:43:40Z (GMT). No. of bitstreams: 2 Dissertacao_Diorgenes_Yuri_Leal_da_Rosa.pdf: 3317198 bytes, checksum: ffad37e3b8f5606e8102f983c5628ac8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-12-22 / Sem bolsa / As infraestruturas computacionais modernas, típicas da Computação Ubíqua, pressupõem características de flexibilidade e de permissividade quanto a conectividade do ambiente. Estas características contribuíram ao longo dos últimos anos com a concretização da emergente Internet das Coisas, a qual estende a demanda de conectividade e, por conseguinte, eleva o tráfego em redes de computadores. Entretanto, os mesmos fatores que permitem estas evoluções também potencializam problemas no que diz respeito a Segurança da Informação. Recorrentemente são implantadas, em redes de computadores, soluções de Segurança da Informação para fins específicos, desenvolvidas em linguagens de sintaxe própria, provendo eventos em formatos também distintos. Estes fatores individualizam a análise destas soluções, o que acaba dificultando a identificação de incidentes. Neste sentido, a Ciência de Situação, enquanto estratégia capaz de integrar eventos de diferentes fontes, torna-se requisito fundamental para a implementação de controles de segurança, permitindo a flexibilidade típica da UbiComp. Considerando isto, a presente dissertação propõe uma abordagem ontológica para Ciência de Situação aplicada ao domínio de Segurança da Informação, denominada EXEHDA-SO (Execution Environment for Highly Distributed Applications - Security Ontology). Por meio de processamento de eventos heterogêneos, provenientes de diferentes fontes contextuais, busca-se uma contribuição a fase de compreensão de Ciência de Situação. O modelo EXEHDA-SO é apresentado em três fragmentos denominados Core, Scope e InterCell Analyzer. De forma a validar o modelo proposto foi desenvolvido um estudo de caso alusivo `a infraestrutura computacional da Universidade Federal de Pelotas. Nesta avaliação, considerando as características de heterogeneidade e distribuição do ambiente, foi possível observar as principais contribuições propostas nesta dissertação. / Modern computing infrastructures, typical of Ubiquitous Computing, assume characteristics of flexibility and permissiveness regarding the connectivity of the environment. These characteristics have contributed over the last few years to the emerging Internet of Things, which extends the demand for connectivity and therefore raises computer networks traffic. However, the same factors that allow these evolutions also potentiate problems with regard to Information Security. Information security solutions for specific purposes are developed in computer networks, developed in their own syntax languages, providing events in different formats. These factors individualize the analysis of these solutions, which brings difficulties to incidents identification. In this sense, Situational Science, as a strategy capable of integrating events from different sources, becomes a fundamental requirement for the security controls implementation, allowing the typical flexibility of UbiComp. Considering this, the present dissertation proposes an ontological approach to Situation Science applied to the Information Security domain, called EXEHDA-SO (Execution Environment for Highly Distributed Applications - Security Ontology). Through the processing of heterogeneous events, coming from different contextual sources, a contribution is made to the understanding phase of Situational Science. The EXEHDA-SO model is presented in three fragments called Core, Scope and InterCell Analyzer. In order to validate the proposed model a case study was developed allusive to Universidade Federal de Pelotas computational infrastructure. In this evaluation, considering the characteristics of heterogeneity and distribution of the environment, it was possible to observe the main contributions proposed in this dissertation.

Un déficit de la cognition sociale incluant l’attribution d’états mentaux, la perception sociale et la perception des émotions est l’une des caractéristiques les plus handicapantes de la schizophrénie. Les résultats d’une étude par Hardy-Baylé et al. (2003) suggèrent que les difficultés des schizophrènes (SZ) à attribuer des intentions aux autres seraient dues à l’incapacité à utiliser l’information contextuelle. Certaines études (Ivanko & Pexman, 2003; Pexman & Olineck, 2002b) démontrent que des facteurs comme le degré d’incongruité entre le contexte et l’énoncé, l’intonation de la voix et les caractéristiques des personnages peuvent influencer la compréhension de l’intention ironique chez les sujets sains (CT). L’objectif de cette étude est de manipuler des informations contextuelles afin de déterminer si le type de métier du locuteur est un indice social facilitant la compréhension de l’intention du locuteur (théorie de l’esprit ; TdE) et de la perception sociale chez les patients SZ. Trente participants SZ appariés avec trente participants CT ont été recrutés. Ils ont été évalués sur la compréhension de l’ironie et sur la mémoire de travail. Les histoires étaient développées selon deux conditions de métier: un métier favorisant la compréhension de l’ironie (e.g. comédien) et un métier ne favorisant pas la compréhension de l’ironie (e.g. prêtre). Les résultats montrent que les patients SZ ont un trouble de TdE et ils ne semblent pas sensibles aux stéréotypes contrairement aux participants CT. Toutefois, les résultats indiquent que les participants SZ n’ont pas de déficit concernant la perception sociale. / Individuals with schizophrenia (SZ) have a deficit in social cognition including mental state attribution, social perception and emotional perception. The results of a study by Hardy-Baylé et al. (2003) suggest that their inability to infer intentions and beliefs to others may result from their inability to use contextual information. Studies (Ivanko & Pexman, 2003; Pexman & Olineck, 2002b) showed that several factors such as level of incongruity between context and speaker’s utterance, vocal inflections and character’s features can influence the comprehension of an ironic intent among healthy (HT) subjects. The aim of this study is to manipulate contextual information to determine if stereotypes (type of speaker’s occupation) are social factors that cue comprehension of speaker’s intention (theory of mind; ToM) and social perception in schizophrenia. Thirty SZ patients and thirty HT participants were recruited for this study. Participants were tested on working memory and irony comprehension. Each story had been manipulated with two conditions of speaker’s occupation: occupation that cues ironic intent (e.g. actor), and occupation that does not cue ironic intent (e.g. priest). The results showed that SZ patients have an impaired ToM and are not sensitive to stereotypes as CT participants. However, the results revealed that SZ participants do not have a deficit in social perception.

Un déficit de la cognition sociale incluant l’attribution d’états mentaux, la perception sociale et la perception des émotions est l’une des caractéristiques les plus handicapantes de la schizophrénie. Les résultats d’une étude par Hardy-Baylé et al. (2003) suggèrent que les difficultés des schizophrènes (SZ) à attribuer des intentions aux autres seraient dues à l’incapacité à utiliser l’information contextuelle. Certaines études (Ivanko & Pexman, 2003; Pexman & Olineck, 2002b) démontrent que des facteurs comme le degré d’incongruité entre le contexte et l’énoncé, l’intonation de la voix et les caractéristiques des personnages peuvent influencer la compréhension de l’intention ironique chez les sujets sains (CT). L’objectif de cette étude est de manipuler des informations contextuelles afin de déterminer si le type de métier du locuteur est un indice social facilitant la compréhension de l’intention du locuteur (théorie de l’esprit ; TdE) et de la perception sociale chez les patients SZ. Trente participants SZ appariés avec trente participants CT ont été recrutés. Ils ont été évalués sur la compréhension de l’ironie et sur la mémoire de travail. Les histoires étaient développées selon deux conditions de métier: un métier favorisant la compréhension de l’ironie (e.g. comédien) et un métier ne favorisant pas la compréhension de l’ironie (e.g. prêtre). Les résultats montrent que les patients SZ ont un trouble de TdE et ils ne semblent pas sensibles aux stéréotypes contrairement aux participants CT. Toutefois, les résultats indiquent que les participants SZ n’ont pas de déficit concernant la perception sociale. / Individuals with schizophrenia (SZ) have a deficit in social cognition including mental state attribution, social perception and emotional perception. The results of a study by Hardy-Baylé et al. (2003) suggest that their inability to infer intentions and beliefs to others may result from their inability to use contextual information. Studies (Ivanko & Pexman, 2003; Pexman & Olineck, 2002b) showed that several factors such as level of incongruity between context and speaker’s utterance, vocal inflections and character’s features can influence the comprehension of an ironic intent among healthy (HT) subjects. The aim of this study is to manipulate contextual information to determine if stereotypes (type of speaker’s occupation) are social factors that cue comprehension of speaker’s intention (theory of mind; ToM) and social perception in schizophrenia. Thirty SZ patients and thirty HT participants were recruited for this study. Participants were tested on working memory and irony comprehension. Each story had been manipulated with two conditions of speaker’s occupation: occupation that cues ironic intent (e.g. actor), and occupation that does not cue ironic intent (e.g. priest). The results showed that SZ patients have an impaired ToM and are not sensitive to stereotypes as CT participants. However, the results revealed that SZ participants do not have a deficit in social perception.