O exame de tomografia computadorizada é um grande aliado na elaboração do diagnóstico, planejamento do tratamento e proservação de lesões malignas do complexo maxilomandibular. Em muitos casos é considerado o exame de eleição para estes fins. Um dos problemas que ocorrem com a TC, é o aparecimento de artefatos devido a restaurações metálicas, implantes osseointegrados ou dispositivos metálicos de fixação óssea. Estes artefatos atrapalham a interpretação das imagens, dificultando a visualização de lesões. O propósito deste estudo foi avaliar imagens de TC com seções de cortes axiais e coronais e determinar se o tipo de seção pode minimizar o problema dos artefatos metálicos dentários. Para isto, dois avaliadores calibrados analisaram 72 imagens (36 em cortes axiais e 36 em cortes coronais) e graduaram quais imagens eram mais bem interpretadas. Os resultados não mostraram diferenças significantes entre os cortes axiais e coronais para se chegar ao diagnóstico, na presença de artefatos metálicos na imagem, assim como demonstrou boa concordância entre os observadores. Conclui-se que a presença dos artefatos metálicos dentários não foi considerada suficiente para impedir a localização de neoplasias de tecido mole. Não foi detectada uma interferência maior de artefatos dentários metálicos tanto nas imagens axiais como nas coronais com relação à interpretação das lesões. A imagem coronal apresentou uma maior interferência em comparação com a imagem axial. Palavras-chave: tomografia computadorizada, artefatos metálicos, neoplasias malignas dos maxilares. / Computed tomography is an important tool to determinate the diagnosis, treatment and follow up malignant lesions of the maxillomandibular complex. In many cases, it is the election exam to all of these purposes. One problem with CT is the artifacts that appear in the presence of metallic restorations, implants and metallic fixation screws or plates. These artifacts lead to misinterpretations of the images, making difficult to visualize lesions in these areas. The aim of this research was to evaluate CT images with different sections (axial and coronal) e to determine if the type of section can minimize the problem of dental metallic artifacts. Two calibrate examiners (oral and maxillofacial radiologists) analyzed 72 images (36 in axial slices and 36 in coronal slices) and graduate which images were best viewed. The results attested that there were no significant differences between axial and coronal images to reach the diagnosis in the presence of dental metallic artifacts, and there were a good concordance with both examiners. We conclude that the presence of dental metallic artifacts wasn’t sufficient to disturb the precise location neoplasm of the soft tissue. It wasn’t detected any dental metallic interference possible to misdiagnosis neither on axial images nor on coronal images. Coronal images presented a higher interference when comparing with axial images.

Les systèmes multi-agents sont des systèmes dans lesquels des entités logiciellesappelées agents interagissent de façon autonome dans des environnements partagés. Ces dernièresannées, de nombreuses recherches sur les organisations multi-agents ont été menées etdivers modèles organisationnels ont été proposés. Cependant, ils n’offrent pas de solution pourune gestion effective de la problématique d’ouverture dans des organisations multi-agents normatives.Dans cette thèse, nous nous sommes intéressées à l’étude de cette problématique etdonc à la spécification des besoins relatifs à la mise en oeuvre de l’ouverture au sein d’organisationmulti-agent. Nous avons ainsi identifié trois propriétés caractéristiques de cette problématique: l’interopérabilité d’une organisation avec son environnement extérieur et interne, lagestion des entrées / sorties et la gestion du contrôle et de la régulation des agents. Pour répondreà ces propriétés, nous avons proposé un langage de modélisation d’organisation (OML)MOISE qui est une extension de Moise+. MOISE permet de spécifier de façon explicite lesprocessus d’entrée / sortie dans une organisation et notamment les exigences relatives auxmissions, buts, et rôles de l’organisation. Nous avons également proposé une infrastructure degestion d’organisation (OMI) ORA4MAS qui s’inspire du méta-modèle Agents et Artifacts(A&A). Nous avons défini le concept d’artefact organisationnel pour implémenter les fonctionnalitéscorrespondant aux spécifications du langage MOISE. Nos propositions ont été illustréesavec une spécification d’organisation de gestion de la construction d’un édifice. La miseen oeuvre des propriétés d’ouverture a été expérimentée avec la gestion des processus d’entrée/ sortie des agents, la négociation des clauses de contrat, la coordination des coopérations desagents à la réalisation des buts de construction d’un édifice, le contrôle des comportements desagents relativement aux normes de l’organisation ainsi que leur régulation. / Multi-Agent Technology concerns the development of decentralized and open systemscomposed of different agents interacting in a shared environment. In recent years, organizationhas become an important in this research field. Many models have been, and are still,proposed. While no concensual model emerges of these different works, it appears that theyall lack the ability to build open and normative organizations in the sense of management ofentry / exit of agents into organization but also decentralized control / regulation of the autonomyof the agents. In this thesis, our objective consists in the definition of a new modeladdressing these requirements. Ours reseaches allow us to extend theMOISE+ organizationalmodeling language (OML) in a new version namming MOISE. In this one we define an Entry/ Exit specification allowing to explicitly specify the ways in which the agents can enter orexit in or from an organisation by providing some requirements according to the missions, thegoals and the roles of the organisation. The organizational management infrastructure (OMI)ORA4MAS proposed take advantage of the Agents and Artifacts (A&A) approach. We definedthe Organizational Artifacts concept as the basic building block of our OMI for themanagement of organized and open MAS. To focus our study, the organizational artifacts willbe defined considering the OML specification of the MOISE model. We experimented ourproposal with the specification of an application aiming to manage the build of a house. Wethen experimented the management of the candidate agents to enter in the organisation and cooperatewith the other to build the house according to a specified social scheme, the specifiednorms and their contract clauses negociated when they will be admitted in the organisation.

This thesis is an attempt to gather and discuss the archaeological and osteological results that has been found in stone ship settings on Gotland. The bone material from five ship settings, one stone setting and a cairn from the bronze age complex at Rannarve in Klinte parish on Gotland has been osteologically analysed during this study to further expand the osteological results that are available from ship settings on Gotland and try to interpret this site. The aim is to try to find what artefacts and bone patterns that can be distinguished from the material found within ship settings. What patterns can be seen in artefacts, age, sex and burial contexts that has been found in ship settings? What are the most common patterns? / Den här uppsatsen är ett försök till att samla och diskutera vilka arkeologiska och osteologiska resultat som påträffats i skeppssättningar på Gotland. Benmaterialet från fem skeppssättningar, en stensättning och ett röse i Rannarve i Klinte socken på Gotland har analyserats osteologiskt för att utöka de osteologiska resultaten som finns tillgängliga för skeppssättningar på Gotland samt för att försöka tolka platsen. Målet är att försöka se vilka föremål och benmönster som går att urskilja från materialet och se vilka mönster som finns mellan fynd, ålder, kön och gravkontext i de olika skeppssättningarna, samt vilka mönster som är de mest vanliga.

Les hydrocarbures aromatiques polycycliques (HAP) dans l'atmosphère sont largement étudiés depuis de nombreuses années, en raison de l'impact sanitaire de ces composés sur l'homme. Du fait de leurs propriétés physico-chimiques, les HAP se répartissent dans les phases gazeuses et particulaires. Cette partition gaz-particule influe sur leur devenir (transport et réactivité) et sur leur impact sanitaire. Ceci rend nécessaire le prélèvement simultané dans les deux phases. Par ailleurs le parlement européen (directive fille n°2004/107/CE) a récemment décidé qu'ils devaient faire l'objet d'une surveillance et le benzo(a)pyrène (BaP) a été choisi comme étant représentatif de cette classe de composés. Dans les cas d'une étude gaz-particule des HAP ou d'un suivi réglementaire (du B(a)P en phase particulaire) la mesure est généralement effectuée par préleveur conventionnel haut volume. Or, de nombreux auteurs ont montré que ce type de préleveur engendrait de multiples artefacts. <br />Ce travail a pour objectif d'améliorer la mesure biphasique des HAP (et plus généralement des composés organiques semivolatils) en validant un tube dénudeur préalablement calibré en laboratoire. Pour cela nous avons réalisé plusieurs campagnes de terrain afin de comparer le préleveur dénudeur au préleveur conventionnel. Les résultats nous ont permis d'observer des différences parfois très importantes entre les préleveurs notamment pour les HAP les plus réactifs (dont le BaP). Ceci semble indiquer une dégradation des HAP particulaires sur le filtre du préleveur conventionnel tandis que le filtre du préleveur dénudeur est protégé des oxydants gazeux par le tube dénudeur. Néanmoins, l'ampleur de cette dégradation n'est pas une fonction linéaire de la quantité d'oxydants. Elle semble être influencé par d'autres paramètres, tels que l'état de "vieillissement" de la particule. Enfin nous avons conçu et réalisé un dispositif expérimental permettant d'étudier la dégradation potentielle des HAP à l'intérieur du tube durant le prélèvement. Cette étude a été réalisée pour le naphtalène avec l'ozone comme oxydant.

Science centres have been identified as an important resource in encouraging teenagers to choose higher education in science and technology. This is of interest to society, since there seems to be a problem in getting sufficient numbers to do so. And accomplishing this is sometimes described as a fatal question for a nation’s future prosperity and development. Still, there is an international trend where teenagers fail to visit science centres.   Through research, little is known about what is interesting or useful to the public, as well as how to reach those who are ‘unengaged’. Considering teenagers as exponents for what distinguishes today’s society makes their apparent unwillingness to participate in science centres interesting to study with regards to what culture, history and ideology these centres were initially produced. Hence, from this point of view, what is missing in science centres that would make them interesting for the young people of today?   Many studies of learning in science centres have come to focus on visitors who visit voluntarily and how well the embedded messages in the exhibits have been acknowledged by these visitors. This study focuses instead on teenagers who are reluctant to participate in science centres, with their perspective of science centres as the point of departure, specifically what kind of social activities are formed in their encounters with science centre exhibits. This encounter is regarded as an encounter between the two different practices of the science centre and the teenagers. The applied theoretical perspective is mainly assembled from socio-cultural theories of learning.   This research is a microanalytic study of five teenagers who were equipped with video cameras and asked to film a visit to the local science centre, Teknikens Hus. The films were later discussed in a focus-group interview consisting of the teenagers and the researcher. Visual ethnography provided the theoretical framework for this research design.   The results showed that the teenagers want to use exhibits to have the authority of interpretations and the possibilities to contribute to the meaning of the activity. At the same time, they want to use the exhibits in a way that the activities become places for developing social identity. To negotiate the meaning of the exhibits there is a need for an openness that may be constrained by too inflexible and limiting exhibit designs. This pattern is described as two different forms of participation in the exhibits; ignoring or extending the intended meaning of the exhibits. Meaningfulness also demands a closeness created by connections between the exhibit and the user’s personal experiences. This pattern is described as two different ways in which the teenagers identified the exhibits; exhibits which they dissociated from or to which they had an ongoing relationship. Providing a space for negotiation seems crucial to inviting teenagers into opportunities of meaningful experiences, even more significant than any specific physical feature in the exhibit.   The teenagers’ agenda, in which forming practices where they can express themselves and contribute to the meaning seem to be very important, appears not to be greatly enabled by science centre exhibits. In this situation they learn to not participate. Science and technology represented in this matter show a ‘ready-made’ world that they cannot change. The missing link in learning in science centres is here described as the part of the meaning making process where the teenagers get to re-negotiate the meaning of the activities in the centre and use the exhibits as tools to accomplish this.

Cette recherche porte sur les conséquences de la création du barrage des Trois Gorges (Chine). Une enquête de terrain menée au cœur du Réservoir, dans le district de Yunyang (Chongqing), a permis d’étudier différents registres interprétatifs et formes de résilience (par sublimation, dramatisation ou immanence) développés tant par les habitants que par les autorités pour appréhender les bouleversements récents et faire face à ce contexte de profonde rupture. Cette étude interroge, d’un point de vue anthropologique, la perception sociale du barrage et de ses conséquences topographiques, écologiques, économiques et sociales (notamment impliquées par le déplacement, l’éclatement social et familial) aussi bien que les processus de reconfigurations territoriales et de reconstruction de l’espace régional et local après la montée des eaux. Elle traite également des modalités de réinscription au sein des territoires transformés, alors que le district est séparé de son ancienne entité administrative régionale de référence, le Sichuan, et qu’une partie de la population est forcée de quitter définitivement la région. Ces thèmes sont envisagés par le biais d’un angle d’approche particulier, celui de la manipulations « d’artefacts culturels ». Le culte rendu aux divinités (et notamment à Zhang Fei, héros national divinisé localement), l’emploi de toponymes, de concepts, le récit d’adages, de mythes, de légendes et de chansons, l’interprétation géomantique et architecturale, ou encore l’évocation portant sur l’histoire, constituent autant de biais, sujets à des interprétations et à des reconstructions circonstancielles de la part des habitants et des autorités, pour mettre en mot le bouleversement et agir sur la nouvelle réalité / This research explores the conceptualization and the experience of the consequences brought about by the Three Gorges Dam (China) construction. Through my fieldwork conducted at the core of the Reservoir, in Yunyang County (Chongqing), I have studied different modalities of interpretation and of resilience developed both by the local population and by the authorities trying to understand and deal with this profound disruption. Through an anthropological point of view, this study analyzes the social perceptions of the Dam, its topographical, ecological, economical and social (forced migration, breaking up of families) consequences. It consider as well the territorial reconfiguration and reconstruction after the rising of the water while the county is being pulled out from its ancient regional administration - Sichuan, and a part of the local population is being forced to leave the county for good. These themes are considered through a specific approach: the analyze of cultural artifacts such as the cults of gods (in particular Zhang Fei, a national hero locally deified), the use of toponyms, concepts, adages, myths, legends, geomancy, or retail of the past. In many ways those ways are interpreted and adapted by the Yunyang people and by its government to “narrate” the upheaval

Amber in Bohemia in the Bronze Age - Abstract Amber found in archeaological contexts like any sensitive instrument can show the total span of meanings of different historic, economic, cultural, cult, and social traditions and systems of values in the prehistoric Europe. The work synthetically analyzes and evaluates the presence of amber finds in Bohemia during the Bronze Age. Attention is devoted relations to sites and amber artefacts demonstrating the probable course of "amber route". On the path leading from the Baltic coast to the Balkans and Italy and further into the eastern Mediterranean seen as a string, or rather a network of relations, most malleable and flexible, distributed among communities, which is also subject while reflecting internal and external influences, changes and developments. It reflects new amber artefacts and new results of IR spectroscopy. Its results shows, that amber did not came to Bohemia only from the north - from Baltic region; its results proved also rumanit amber. Work is a comprehensive evaluation and interpretation of participation Bohemia in the distribution network of leading amber in the wider European area. Study of the amber and its distribution gives evidence, that there existed vivid exchange, based on variety of connections with distant region sof northern...

The objective of my diploma thesis was to find out the way the chosen corporate culture is realised in use and what it's impact on company employees. The diploma thesis resulted in a compact summary of the company corporate culture as well as gave suggestions how to improve imperfections in given areas. For this particular analysis of the corporate culture in Vodafone CZ company I have created a concept of procedure and a selection of techniques usable for information acquisiton neccessary for current situation diagnose of corporate culture in the given company.

This dissertation explores value-creation in interaction design through practical collaborations with studio craftspersons. A focus is on the meaning of “preciousness” from a design perspective – what I refer to as Making Preciousness –  which highlights aspects of material properties, design processes, and the attitude to the design space. Theoretically, the work takes inspiration from the Japanese philosophy of Wabi-Sabi, which is based on the fact that things are impermanent, incomplete, and imperfect. This reflects a view of preciousness beyond notions of practical use, luxury or monetary cost. In addition to theoretical studies, I engaged in practice-based research at the intersection of interaction design and studio crafts, in the domains of leather, silversmith and textile crafting. Through an approach that blends these practices with the making of interactive artefacts, preciousness for interaction design was explored. Through this work, I extract three qualities, all of which are closely linked to attributes and values ​​embedded in the craft practices examined. I refer to these as resourceful composition, material sensuality and the aiming for mattering artefacts. Resourceful composition refers to approaching a design space “resourcefully”, meaning that the designer actively values and uses the specific qualities of materials and tools consciously, for what they are suitable for. Material sensuality is about appreciating the sensory experience of interacting with materials, arriving through particular material qualities, such as texture, temperature or smell, but also interactive qualities. Aiming for mattering artefacts involves actively designing for impermanence, incompleteness and imperfection, and through that contributing to notions of preciousness through use, care, ownership and interaction between users and artefacts over time. The attitude of making preciousness can be seen as tying together materials and making with user experiences of computational artefacts. For interaction design, this points towards making processes in which computation and material knowledge, craftsmanship and aesthetic intentions are placed at the core. These values ​​relate to cultural, but also sensual experiences, which can be seen as under-explored in the design of interactive products. / <p>QC 20171213</p>

This thesis explores how cognitive artefacts contribute to the process of reaching common ground within collaborative groups through a study of both Clark's theory of Common Ground and of how artefacts are understood to be used, both by individuals and as seen in distributed cognition. This was accompanied by an ethno-methodologically inspired study in the natural setting of a kitchen to observe how artefacts are used when negotiationg common ground. After the study's completion, participants were interviewed in order to establish whether common ground was successfully established ant to look for consistency between obeservations from the study and how the participants motivate their actions. The study was analysed in order to find patterns, of which four distinct kinds were indentified; these categories were then related to facts established in the study of Common Ground and artefacts.