[pt] Um avanço importante gerado pela tecnologia de TV digital é a possibilidade de interatividade com os usuários, realizada por meio do assim chamado canal de retorno. As redes ad hoc têm um grande potencial para atender esse tipo de serviço, pois podem ser empregadas em diversas áreas geográficas e idealmente de forma independente de infra- estrutura. Isso diminui o seu custo e propícia o aumento da velocidade de implantação deste tipo de rede. Uma das principais questões técnicas a serem resolvidas no contexto das redes móveis ad hoc é a necessidade de algoritmos eficientes para a realização do roteamento dos pacotes. O projeto Terminodes, desenvolvido pelo Instituto Federal de Tecnologia da Suíça, desenvolveu um protocolo de roteamento que utiliza a informação de localização. Este método de roteamento é freqüentemente proposto como um meio para prover escalabilidade em redes ad hoc distribuídas sobre áreas geográficas extensas. O roteamento baseado em localização é difícil quando há áreas de exclusão na topologia da rede e os nós são móveis ou freqüentemente desconectados para fins de economia de bateria. Portanto, a investigação da robustez do protocolo para esses casos é fundamental para avaliar seu uso em redes que podem servir como canal de retorno de TV digital. / [en] An important advance generated by the technology of digital TV is the possibility of interactivity with the users, what is done by means of the return channel. The mobile ad hoc networks have a great potential to provide this type of service, because it can ideally be used in diverse geographic areas and independent of any infrastructure. This minimizes the costs and the time needed to implement the network for this canal. One of the main questions techniques in the context of the mobile ad hoc networks is the necessity of efficient routing algorithms. The Terminodes project, developed by the Federal Institute of Technology of Switzerland, developed a routing protocol that is based in location information. This routing method frequently is a way to provide scalability in large ad hoc networks. The routing based on location is difficult when it has areas of exclusion in the topology of the network and the nodes are mobile or they are frequently disconnected to save battery. Therefore, assess the robustness of the protocol for these cases is basic to evaluate its use in networks for the digital TV return channel.

En cas de catastrophes importantes, telles qu’un tremblement de terre ou un incendie, l’efficacité des forces de la sécurité civile nécessite une bonne coordination des différents groupes d’intervention. Suivant la nature et l’importance du sinistre, l’infrastructure des moyens de communications classique peut être détruite. Les forces d’intervention ont donc besoin de nouveaux outils de communication dits réseaux de circonstance. Ces réseaux posent de nouveaux problèmes de routage, pour maintenir la connectivité, mais aussi d’allocation de ressources, particulièrement importante dans un contexte de sécurité où les communications doivent être garanties. Dans une première partie, nous avons abordé la problématique de l’allocation de ressources dans les réseaux de circonstance utilisant le partage TDMA. Nos solutions visent une répartition équitable des canaux et prennent en compte une zone d’interférence double de celle de transmission.Evaluer de nouvelles politiques dans des réseaux déployés sur des scènes de catastrophe nécessite de nouveaux modèles de mobilité. Nous avons donc également développé un nouveau modèle de mobilité spécifique au déplacement des équipes de la sécurité civile. / When a major disaster occurs, such as an earthquake or fire, the efficiency of the rescue workers depends of the coordination between the different emergency teams. This coordination needs reliable communication equipments. In such a situation, however, the infrastructure for wireless communication is generally destroyed or unusable. It is therefore necessary to find adapted communication tools for the rescue workers known as opportunistic networks. These networks pose new challenging problems such as, for instance, resource allocation which is particularly important for the QoS satisfaction. In the first part of our thesis, we addressed the problem of resource allocation in ad hoc networks using the TDMA access mechanism. Our solutions aim to perform a fair distribution of channels and take into account an interference area twice as large as the transmission range. Evaluation of new policies for opportunistic networks deployed in disaster areas requires new mobility models. We developed a novel mobility model dedicated to the movement of rescue workers. Our model includes the group mobility and some characteristics of human mobility. It also incorporates a mechanism to circumvent obstacles presents in the simulation area.

Avec le succès des communications sans fil, il devient possible d'accéder au réseau partout et à tout moment sans avoir recours à connecter physiquement les appareils communicants à une infrastructure. Les nœuds (ordinateurs portables, smartphones, etc) peuvent analyser les différents canaux radio afin de pouvoir s'associer à un réseau sans fil disponible (station de base, point d'accès, etc.). Un avantage indéniable de ses technologies sans fil est la possibilité d'être mobile tout en restant connecté. Cependant, la mobilité est une tâche difficile à gérer car elle doit être abordée à différentes couches pour être transparente aux utilisateurs. Dans les MANET (Mobile Ad hoc Network), les protocoles de routage utilisent des métriques pour sélectionner les meilleures routes. Les métriques peuvent refléter la qualité de la liaison sans fil et aider à gérer la mobilité.Mais, un retard important entre l'estimation des métriques et leur inclusion dans le processus de routage rend cette approche inefficace.Les travaux de cette thèse s'intéressent à la proposition de nouvelles méthodes de calcul des métriques de routage pour gérer le problème de la mobilité dans les réseaux ad hoc. Les nouvelles métriques doivent refléter la qualité du lien et être sensibles à la mobilité en même temps. Nous considérons les métriques classiques, en particulier ETX (Expected Transmission Count) et ETT (Expected Transmission Time). Nous introduisons de nouvelles méthodes pour anticiper les valeurs de ces métriques en utilisant des algorithmes de prédiction. Nous utilisons une approche Cross layer, qui permet l'utilisation conjointe de l'information à partir des couches 1, 2 et 3. La validation de nouvelles méthodes de calcul des métriques de routage nécessite une évaluation au travers d'un véritable banc d'essai. Nous avons donc également mis en œuvre les nouvelles métriques de routage dans un testbed afin d'évaluer et de comparer leurs performances avec les métriques classiques. / With the success of wireless communications, it becomes possible to access the network anywhere at any time without the need for physically connect communicating devices in an infrastructure. The nodes (laptops, smartphones, etc.) can analyze different radio channels to be able to associate with an available wireless network (base station, access point, etc.). An undeniable advantage of wireless technologies is the ability to be mobile while staying connected. However, mobility is difficult to manage because it must be addressed at different layers to be transparent to users. In MANET (Mobile Ad hoc Network) routing protocols use metrics to select the best routes. The metric can reflect the quality of the wireless link and help manage mobility.But a significant delay between the estimate metrics and their inclusion in the routing process makes this approach ineffective.The work of this thesis are interested in proposing new methods for calculating routing metrics to manage the problem of mobility in ad hoc networks. The new metrics should reflect the quality of the link and be sensitive to the mobility simultaneously. We consider the classical metrics, particularly ETX (Expected Transmission Count) and ETT (Expected Transmission Time). We introduce new methods to predict the values of these metrics using prediction algorithms.We use a cross layer approach, which allows the joint use of information from layers 1, 2 and 3. The validation of new methods for calculating routing metrics requires evaluation through a real bench test. So we also implemented new routing metrics in a testbed to assess and compare their performance with classical metrics.

Este trabalho, com origem na clínica institucional do Centro de Atenção psicossocial Álcool e Drogas (CAPS-AD) e a ela destinada, tem como intuito principal oferecer a possibilidade de reflexão a respeito de aspectos do funcionamento psíquico do toxicômano, de hipóteses sobre o desenvolvimento infantil de um dependente químico e de modos como estes aspectos se reeditam na relação transferencial-contratransferencial. Desde o início da produção teórica de Freud, a dependência química é objeto da investigação psicanalítica, embora ele não tenha realizado estudos específicos voltados a essa forma de sofrimento psíquico. Olievenstein, referência francesa no tratamento da dependência química, afirmou que, no desenvolvimento de sujeitos toxicômanos, não existe uma infância específica, mas certo trauma comum a todos. Esta hipótese, fundamental para o presente estudo, reconstrói os primeiros momentos identificatórios do adicto, em referência ao estádio do espelho lacaniano. A partir da vivência com pacientes de CAPS-AD pude apreender aspectos das manifestações referenciadas ao estádio do espelho partido, ao se atualizarem no âmbito da relação terapêutica, fosse diretamente comigo, como psicanalista, ou com a instituição. Por meio da contratransferência e a compreensão do afeto que dela parta, o analista pode dar novos contornos e suporte para a manifestação transferencial, viabilizando o apoio para a reparação de experiências que não encontraram via de simbolização anteriormente. É justamente a decifração desses processos que legitima e especifica o lugar da psicanálise em instituições como os CAPS-AD / This work, which has its institutional origins on the work and observations I developed at the Psychosocial Attention Center Alcohol and Drugs (CAPS AD) clinic and aims at supporting clinical work, reflects on the aspects of the psychic functioning of the drug addict, hypotheses on the development of a child drug addict and ways the psychic aspects observed repeat in the transference-countertransference relationship. Addiction is the object of psychoanalytic investigation since the early theoretical work of Freud, although Freud himself has not conducted specific studies regarding this form of psychological distress. Olievenstein, French reference in the treatment of chemical addictions, found that drug addict subjects do not present one similar type of childhood development, but do have in common one type of trauma: the Broken Mirror Stag a development from the Lacanian Mirror Stage. This hypothesis - the presence of a common trauma - is fundamental for this study since it elucidates the first identificatory moments of an addict. From the experience with CAPS - AD patients and through the the therapeutic relationship, I could learn aspects of the manifestations referred as the broken mirror stage. Through the countertransference and understanding the affection that might originate from this phenomenon, the analyst can give a new shape and support for the manifestation of transference, enabling support for repairing experiences that have not found healing through previous symbolizations. It is precisely the deciphering of these processes that legitimizes and specifies the place of psychoanalysis in institutions like the CAPS -AD

L’objectif de cette thèse est la gestion de la QdS des systèmes publier/souscrire sur MANET. Ceci provoque un maintien permanent de la connectivité entre les parties communicantes du système. Plus précisément, les contributions de cette thèse, sont organisées autour de deux grands axes relatifs aux modules de monitoring et d’analyse de la QdS de ces systèmes dans un contexte ad-hoc. Ceci englobe les etapes de collecte des paramètres de QdS au cours du fonctionnement du système, et de détection des dégradations pouvant l’affecter.Contrairement à ce qui existe dans la littérature, notre module d’analyse, basé sur des méthodes statistiques, se base sur des seuils adaptatifs qui tiennent en comptes de la dynamicité du réseau et des changements affectant le contexte ad-hoc. En outre, le module d’analyse proposé offre à l’utilisateur une variété de choix entre une analyse réactive, proactive et hybride. Notre module permet aussi une localisation des pannes une fois détectées ou prédites. Des expérimentations menées à l’aide du simulateur Jist/Swans ont montré l’efficacité des modules developpés. De plus, une mesure des paramètres de performance du système avant et après introduction des modules développés a montré leur efficacité. Finalement, une étude de la complexité spatiale et temporelle du module analytique proposé a été réalisée. / Mobile ad-hoc networks (MANET) is a set of nodes, communicating meaning wireless channel without any centralized control. The main characteristic of MANET is the frequent mobility of its nodes leading to some dynamic changes of topology. Nodes mobility in such networks introduces possible disconnections between adjacent nodes, and more generally quality of service (QoS) degradation issues that do not fit well with QoS requirements of QoS sensitive applications. Publish/subscribe communicating system has been proposed at the middleware layer in order to communicate mobile entities in MANET. Such system is a decoupled interaction between publishers (or producers) and receivers (or consumers).Our goal in this thesis is to provide a QoS management for publish/subscribe systems when deployed on MANET while assuming a best effort flux at the routing layer. This thesis proposes an analytical model for latency aware publish/subscribe systems on mobile ad-hoc networks. The proposed approach combines both proactive and reactive statistical analysis.On the one hand, the reactive analysis, suitable for multimedia applications, detects failures by approximating latency series with Gumbel distribution. On the other hand, the proactive analysis, suitable for crisis management applications, forecasts failures occurrence relying on Auto Regression or Auto Regressive Integrated Moving Average Formulas. Finally, a hybrid analysis was proposed by dynamically switching from reactive to predictive forms of analysis whenever quality of service violations are noticed. In order to extract failure cause, we refer to the correlation method once failure was detected or predicted. Simulations done, using Jist/Swans simulator, under different scenariosproved the efficiency and accuracy of the proposed scheme.

A formação territorial do Brasil foi marcada por duas grandes características: a grande extensão das propriedades e a indefinição quanto aos seus limites. Se em um primeiro momento a sua aquisição se dava por concessões feitas pela Coroa Portuguesa, ou pela simples ocupação, com o passar do tempo também surgiram vendas entre os próprios particulares. Com estas características, uma questão inevitável surge já no final do século XIX na doutrina e jurisprudência brasileiras: havendo divergência entre a área tratada e a efetivamente apurada, a quem cabe a responsabilidade? O primeiro problema é o do direito aplicável: Ordenações ou Direito Subsidiário? E, neste último caso, qual seria o direito? Os Códigos Civis de 1916 e de 2002 trouxeram em seu bojo artigos tratando especificamente da questão. Contudo, permaneceram dúvidas, em especial quanto à natureza da proteção concedida às partes chave de todo o sistema. O presente trabalho pretende demonstrar, com base em subsídios históricos, que a solução tradicionalmente adotada a cisão das vendas entre ad corpus e ad mensuram é inadequada, propondo um outro modo, resgatado do passado, de se compreender o tema. / The territorial evolution of Brazil is regarded by two important characteristics: the great extension of the land properties, and the unclear definition of its limits. At first, the acquisition of land occurred by concession of the Portuguese monarchy or simply by the territorial occupation. Later on, there would be a land trade between commoners. By the end of the nineteenth century, the characteristics of the land occupation bring about an unavoidable question to the legal thinkers and court decisions: who should be responsible in case of divergence between the contracted dimensions and the found dimensions ? The first problem regards the applicable law. Portuguese \"Ordenações do Reino\" or the \"Direito Subsidiário\"? And, on the latter case, what would be the solution? The Brazilian civil codes of 1916 and 2002 brought within articles regarding the question. Nevertheless, there is still uncertainty, especially concerning the nature of the legal protection given to the parts - the key of the whole system. The aim of the present work is to demonstrate that, based on the historical facts, the solution traditionally adopted - the division of the purchasing agreements, between ad corpus and ad mensuram selling - is inappropriate. In addition, the work proposes a distinctive way of understanding the topic, based on the past.

<p> </p><p>Flickor med AD/HD upptäcks ofta inte i tid vilket kan ge konsekvenser inom flera områden under uppväxten. Syftet med denna uppsats var att bidra till en ökad förståelse kring hur diagnosen AD/HD kan påverka livet under uppväxten för flickor. Sex vuxna kvinnor med AD/HD intervjuades för denna studies syfte. Studien grundade sig i kvalitativ metod med hjälp av fenomenologisk tolkning samt meningskoncentrering vid sammanställning och analys av intervjumaterialet. Undersökningen fokuserade på sex centrala teman; diagnosens betydelse, skola, fritid, familjen, jämnåriga relationer och självuppfattning. Resultatet förtydligade att dessa centrala teman är betydelsefulla områden för en flicka med AD/HD under uppväxten. Ett fastställande av diagnosen AD/HD spelar en central roll gällande förståelse och hjälp från omgivningen. Studien visade på att flickor med AD/HD har vissa svårigheter i relationer till lärare, jämnåriga samt familj under uppväxten. För majoriteten av respondenterna har mamman varit det viktigaste stödet under uppväxten. Det har framkommit att familj och lärare har svårt att förstå samt att hantera flickor med AD/HD. Flickor med AD/HD har olika grad av svårigheter och tillgångar i skolarbetet samt i vardagen. I studien framgick det att undervisningsformen har betydelse för en flicka med AD/HD. Självuppfattningen hos en flicka med AD/HD kan påverkas av samhällets syn på hur en flicka ska vara. I studien framgick det tydligt att flertalet av respondenterna upplevt sig som en pojkflicka under uppväxten. Studien visade även på förekomst av psykisk ohälsa hos flickor med AD/HD under uppväxten.</p>

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<p><em>A Quick Test </em>(AQT)<em> Färg och Form</em> är ett test av snabb automatiserad benämning avsett att detektera kognitiva störningar. Det består av tre delar som var och en utgörs av 40 visuella stimuli som skall benämnas så snabbt som möjligt. Tidigare studier har indikerat att AQT skiljer personer med Alzheimers sjukdom från friska kontroller med högre precision än det ofta använda <em>Mini-Mental-Testet </em>(MMT). I denna studie undersöktes för första gången om AQT-resultat kunde predicera diagnosen hos en konsekutiv serie patienter vid en minnesklinik samt relationen mellan AQT-resultat och biomarkörer (likvorproteiner) för neurodegenerativ sjukdom. 492 svarsblanketter från <em>AQT Färg och Form</em> analyserades och diagnostisk prediktion samt korrelation med nivån av likvorproteiner fastställdes för de 374 första patienterna i serien. Resultaten tyder på att <em>AQT Färg och Form</em> kan vara känsligt för vissa lindriga kognitiva sviktsymptom som förekommer hos personer remitterade för minnesbesvär men inte alltid känsligt för lindriga grader av demens. AQT-data korrelerade måttligt med nivån av patologiska likvorproteiner, troligen avspeglande förhöjda nivåer i Alzheimergruppen. Ytterligare forskning på konsekutiva fallserier behövs för att fastställa testets diagnostiska diskriminationsförmåga i klinisk praxis.</p> / <p><em>A Quick Test </em>(AQT)<em> Color-Form </em>is a test that uses rapid automatized naming in order to identify cognitive impairment. It is divided into three parts, each of which consists of 40 stimuli that are to be named as quickly as possible. Previous studies have indicated that AQT separates patients with Alzheimer’s disease from normal controls with higher accuracy than the commonly used <em>Mini-Mental State Examination </em>(MMSE). The purpose of this study was to investigate, for the first time, whether AQT results collected from a consecutive series of patients at a Memory Clinic would be able to predict the diagnosis. Another aim was to study the possible relation between AQT results and Cerebrospinal Fluid (CSF) biomarkers for neurodegenerative diseases. 492 forms from <em>AQT Color-Form</em> tests were analyzed and diagnostic prediction and correlation with level of CSF biomarkers were determined for the first 374 patients. The results imply that <em>AQT Color-Form</em> may be sensitive to some symptoms of benign memory impairment that is found in patients admitted to a Memory Clinic, but that it is not always sensitive to mild degrees of dementia. Further research consecutive series of patients is needed in order to determine the diagnostic abilities of discrimination in clinical practice.</p>

The requirements of modern e-learning techniques change. Aspects such as community interaction, flexibility, pervasive learning and increasing mobility in communication habits become more important. To meet thesechallenges e-learning platforms must provide support on mobile learning. Most approaches try to adopt centralized and static elearning mechanisms to mobile devices. However, often technically it is not possible for all kinds of devices to be connected to a central server. Therefore we introduce an application of a mobile e-learning network which operates totally decentralized with the help of an underlying ad hoc network architecture. Furthermore the concept of ad hoc messaging network (AMNET) is used as basis system architecture for our approach to implement a platform for pervasive mobile elearning.