The use of Web sites by terrorist groups has been evident since the mid 1990s. Security experts and researchers have identified terror-related Internet activity as a growing area of concern, especially following the attacks of September 11, 2001. Terrorist groups using the Internet pose two distinct threats. The first is cyberterrorism: terrorists using the Internet destructively and directly to bring about harm to persons or property, including, attacks on Web sites. The second is the use of the Internet as a communication medium to further the cause of terrorism or a particular organization. As of 2008, Weimann (2008b) estimated that over 6,000 terrorist Web sites exist, but the definition of a terrorist Web site is not always clear. This study analyzed the content of 30 "extremist" sites and defined those as sites that endorse hatred and violence towards the United States and its allies by sharing their hatred and actively promoting their ideologies online. This research examined the source of the message, the message content, the types of receivers intended, the channels used to communicate the message, the purpose of the message, and the effects of the message. Results indicate that a major purpose of the organizations is to justify their actions to skeptics. The organizations have built a virtual extremist community with each other and outside members where their sum is greater than their total. The actual impact of these sites is difficult to measure. However, while Web 2.0 features are employed on these sites, this study argues that censorship and forum rules restrict members from engaging in a real dialogue thus limiting the potential of recruiting moderates.

Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-04-23T12:35:07Z No. of bitstreams: 1 Leila Friedrich.pdf: 945666 bytes, checksum: 6bd01ba22dfd6b6e880b4f9a131adaee (MD5) / Made available in DSpace on 2013-04-23T12:35:07Z (GMT). No. of bitstreams: 1 Leila Friedrich.pdf: 945666 bytes, checksum: 6bd01ba22dfd6b6e880b4f9a131adaee (MD5) Previous issue date: 2006 / As tubulações de aço carbono, para a produção e transporte de produtos químicos, apresentam limitações como resistência à ação da corrosão, sob ação do calor, causando desgaste. Por esse motivo se faz o uso de revestimentos que reduzem o contato da superfície com o meio corrosivo. No entanto, os revestimentos usados para o escoamento de fluídos têm ainda que apresentar uma menor interação com a superfície, uma menor tensão interfacial. Uma grande aplicação destes revestimentos é em dutos de petróleo, devido às obstruções ocasionadas à medida que o óleo escoa através do duto, pois este perde calor para o meio e conseqüentemente se dá à deposição de compostos parafínicos. Análises destes revestimentos com a técnica PLF-FI são de suma importância para avaliar a tensão interfacial dinâmica, pois esta técnica difere das tradicionais para a caracterização da superfície, por ser um método não destrutível e dinâmico. Para a confecção das amostras alguns tempos e temperaturas de cura foram aplicados. Neste presente trabalho, avaliamos quais as superfícies apresentam menor molhabilidade sob condições de fluxo com a superfície, visando um menor número de ocorrências de obstruções das tubulações e paradas para manutenções. Os valores de polarização máxima são verificados para as amostras curadas numa faixa de temperatura entre 120°C a 140°C e tempos de 6 a 10 horas, e sendo estes as variáveis de processo mais indicadas para a produção em alta escala. O presente trabalho foi organizado em 5 capítulos, apresentando-se no Capítulo 1 uma introdução do estudo realizado para a otimização do processo de cura em resinas epóxi modificada com agentes de cura a base de amina. No capítulo 2, apresenta-se uma revisão das tubulações, resina epóxi, a composição, e a cura dos revestimentos. No 12 capítulo 3, revisam-se as técnicas de análises e descrevem-se todas as técnicas experimentais realizadas. No capítulo 4, discutem-se os resultados adquiridos pelas técnicas utilizadas. No capítulo 5, relatam-se as conclusões deste trabalho. / Salvador

Livestock farms have recently experienced a significant growth in their size and this is due to the increase in animal products. This has a technical impact on farmers' daily activities. As there are more animals, it becomes more difficult for the farmers to monitor, take care of and ensure the animals are treated in a healthy manner. The purpose of this study is to examine how farmers are affected by the use of the Precision Livestock Farming (PLF) systems and how they have come to accept the technology. The study will take up an important aspect of the impact and effect of PLF. The aim of the study is to find out how farmers are affected by PLF systems in regard to Ease of Use (EOU) and Usefulness. A total of five semi-structured interviews consisting of two researchers, one product advisor, one support worker and one farmer were conducted. An observation was also conducted along with the farmer and support worker. During the interviews, the participants answered our questions regarding PLF and its EOU and Usefulness. The data was analyzed using a thematic analysis and the results showed that PLF systems are important and useful but need further EOU development. Furthermore, the results showed that the poorly designed user interfaces impact the farmers’ attitude and intention towards using the system, which also affects their attitude towards the Usefulness of the PLF systems. The research confirms the importance of including farmers under the development phase of PLF systems. Lastly, this research might be the foundation for further research on how to improve and develop a more user-friendly PLF system.

Cette thèse de doctorat porte sur la première crèche parentale bilingue anglais-français établie dans la ville de Strasbourg, France. En utilisant une approche ethnographique, cette recherche examine le lien qui existe entre la politique linguistique identifiée et les facteurs sociaux. La problématique de recherche a été formulée ainsi : comment fonctionne une structure éducative bilingue dédiée à la petite enfance du point de vue des politiques linguistiques, quelles sont les implications du choix de la politique une personne, une langue (UPUL) sur les pratiques des acteurs éducatifs et des familles au sein de la crèche en question, et quel est le lien entre le bilinguisme déclaré de la structure et le multilinguisme des familles ? Enfin l’étude des choix de langues dans un contexte tel que celui de la petite enfance apporte-t-elle une compréhension nouvelle de la notion de politique linguistique éducative ? De plus, cet effort de recherche vise à combler une lacune dans les études de LP qui, dans une certaine mesure, sont concentrées soit sur le cadre familial, soit sur le cadre de l’éducation formelle. / This doctoral thesis focuses on the first parental English-French bilingual crèche established in the multilingual city of Strasbourg, France. Using an ethnographic approach, this research looks into the relationship of language policy with social factors. With the one person, one language (OPOL) policy as this ECEC setting’s identified language policy (LP), my aim is to understand its language policy processes. Primarily informed by Spolsky’s tripartite LP conceptualisation, I seek to analyse the following: the declared language policy or what the proponents say about how they manage languages; the perceived language policy or what they believe about OPOL; and the practiced language policy or what they do and how they implement the said LP. Moreover, following Johnson (2009), I also address the multilayered dimension of LP and look at the agents, goals, processes and discourses involved in the creation of this crèche. Moreover, this research endeavour aims to address a gap in LP studies that to a certain extent have focused on either family or formal educational settings.