Depuis son invention, l'électricité joue un rôle essentiel dans notre vie quotidienne. L'apparition des premières installations de production d'électricité à la fin du XIXème siècle a ouvert la voie au système électrique et à ses sous-systèmes. Les consommateurs d'énergie électrique exigent un service fiable en termes de stabilité et de sécurité du réseau électrique. Depuis la libéralisation des marchés, les producteurs d'énergie électrique, les fournisseurs de services publics et d'équipements, en tant qu'acteurs principaux, suivent une tendance émergente pour satisfaire les demandes des consommateurs. Cette tendance implique l'amélioration des technologies, l'innovation et le respect des normes et des réglementations gouvernementales. Tous ces efforts ont été qualifiés de concept de réseaux intelligents (Smart Grid en anglais) qui évolue pour répondre aux demandes futures.Les sous-stations numériques modernes et futures façonnent des nœuds essentiels dans le réseau électrique, où la stabilité du flux d'énergie électrique, la conversion des niveaux de tension et la protection de l'équipement du poste de commutation figurent parmi les principaux rôles de ces nœuds. La norme prometteuse CEI 61850 et ses composants apportent de nouvelles fonctionnalités aux systèmes d'automatisation des postes. L'utilisation de la communication Ethernet dans ces systèmes réduit la quantité de connexions câblées qui réduit l'encombrement de l'équipement de la sous-station, des dispositifs et de leur câblage.L'intégration des nouvelles fonctionnalités CEI 61850 au niveau des sous-stations requiert des compétences multidisciplinaires. Par exemple, considérons les tâches de protection et de contrôle de la puissance d'un côté et les technologies de l'information et de la communication de l'autre. La dépendance entre les fonctions d'automatisation des sous-stations et les réseaux de communication à l'intérieur d'une sous-station pose de nouveaux défis aux concepteurs, intégrateurs et testeurs. Ainsi, étudier la fiabilité des fonctionnalités du système, par exemple, les schémas de protection, exige de nouvelles méthodes d'essai où les méthodes conventionnelles ne sont pas applicables. Les nouvelles techniques devraient fournir des moyens d'évaluer les performances des systèmes conçus et de vérifier leur conformité aux exigences des normes.Afin d'améliorer la fiabilité du système conçu, ce travail vise à développer des méthodes pour tester les systèmes d'automatisation de sous-station CEI 61850, en particulier sur les processus et les niveaux de la baie, dans une plate-forme dédiée aux tâches de recherche. Cette plate-forme incorpore des dispositifs de pointe et des cartes de test qui aideront à observer simultanément les interactions dynamiques des transitoires de puissance et les perturbations du réseau de communication. Les données obtenues lors des tests expérimentaux seront utilisées pour diagnostiquer les défaillances et classer leurs causes afin de les supprimer et d'améliorer la fiabilité du système conçu. / Since its invention, Electricity has played a vital role in our everyday life. The appearance of the first power production facilities in the late nineteenth century paved the way for the electrical power system and its subsystems. Consumers of electric power demand dependable service in terms of power grid stability and safety. Since the liberalization of the markets, producers of electric power, utilities and equipment suppliers, as principal players, are following an emerging trend to satisfy consumers’ demands. This trend involves improving technologies, innovating and respecting standards requirements and governments’ regulations. All these efforts termed as the concept of the Smart Grid that is evolving to meet future demands.Modern and future digital substations shape essential nodes in the grid, where stability of electric power flow, converting of voltage levels and protecting switchyard equipment are among the primary roles of these nodes. The promising standard IEC 61850 and its parts, bring new features to the substation automation systems. The use of Ethernet based communication within these systems reduces the amount of hardwired connections that results in lowering footprint of substation equipment, devices and their cabling.Integration of the new IEC 61850 features at the substation levels requires multidiscipline competences. For instance, consider power protection and control tasks from one side and information and communication technologies from the other side. Dependency between substation automation functions and communication networks inside a substation brings new kinds of challenges to designers, integrators and testers. Thus, investigating the dependability of the system functionalities, e.g. the protection schemes, requires new methods of testing where conventional methods are not applicable. The new techniques should provide means to evaluate performance of designed systems and checking their conformance to the standards requirements.In order to improve the designed system dependability, this work aims to develop methods for testing the IEC 61850 enabled substation automation systems, especially on the process and the bay levels, in a platform dedicated for research tasks. This platform incorporates state-of-art devices and test-set cards that will help to simultaneously observe dynamic interactions of the power transients and communication network perturbations. Data obtained during the experimental tests will be used for diagnosing of failures and classifying their causes in order to remove them and enhance dependability of the designed system.

Dans un contexte industriel où le partenariat d’entreprises devient une réponse stratégique aux exigences accrues du marché, le contrat d’approvisionnement apparaît progressivement comme un élément-clé de la gestion d’une chaîne logistique. La contribution de cette thèse comporte deux volets. Au plan méthodologique, il s’agit de fournir à l’entreprise un cadre d’analyse support à la contractualisation, permettant de relier clause, risque et performance en vue de définir, par une démarche instrumentée, les clauses pertinentes en adéquation avec le contexte industriel et la relation d’approvisionnement. Au plan des outils, un modèle de planification avec prise en compte des contraintes contractuelles et une plateforme de simulation ont été développés. Deux types de contrats d’approvisionnement (contrat d’engagement sur des quantités par période et contrat d’engagement sur des quantités par horizon) ont été simulés, mettant en évidence l’impact de ces derniers sur la performance locale (vue partenaire) et globale (vue de la chaîne logistique). / In high competitive industrial context where the collaborative partnership becomes a strategic answer to face the increased market requirements, supply contract gradually appears to be a key element in supply chain management. The contribution of this thesis is twofold. In one hand, methodological approach aims at providing deciders with contracting framework support that links clause, risk and performance in order to define, by instrumented approach, the relevant clauses to commit in adequacy with industrial context and supplying relationship. In the other hand, planning model including contractual constraints and simulation platform are developed. Two types of supply contracts (commitments on quantities per period and commitments on quantities per horizon) are simulated, highlighting the impact of these one on local performance (partner view) and global performance (supply chain view)

Made available in DSpace on 2018-06-04T19:14:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-10-27 / Objetivo: O objetivo principal deste trabalho foi analisar como se desenvolve a gestão do trabalho em saúde à luz do PCCS, comparando com as Diretrizes instituídas pelo Ministério da Saúde para a elaboração do PCCS e pelo Programa Desprecariza SUS em dois municípios da grande São Paulo. Métodos: Tratou-se de uma pesquisa de abordagem qualitativa, que utilizou da pesquisa bibliográfica, de campo e documental, e de técnicas para coleta de dados, como entrevistas semiestruturadas com os gestores das SMS pesquisadas, e grupos focais com profissionais da saúde vinculados que atuam nas UBS e Hospital. A análise dos dados levou em consideração a proposta da Análise de Conteúdo de Bardin, a partir dos núcleos temáticos, núcleos de sentido e as categorias objetos de estudo. Resultados: Verificou-se que os PCCS dos municípios estudados atendem às Diretrizes Nacionais do PCCS, contemplando premissas do Desprecariza SUS no combate ao vínculo precário. Contudo, verificou-se que o PCCS é pouco conhecido pelos servidores, além de apresentar fragilidades nos critérios de evolução do servidor quanto à avaliação de desempenho e às políticas de educação permanente, tidas como premissas de valorização e reconhecimento deste profissional pelo MS. Constatou-se também que existem diferenças no tratamento de servidores estatutários e celetistas, não inclusão de categorias profissionais que atuam também na saúde; o não reconhecimento da qualificação/formação como um dos pilares para evolução, gerando consequentemente, insatisfação e frustração quanto às políticas de pessoal praticadas em ambos os municípios. Conclusão: Os PCCS dos municípios estudados não consideram as condições de trabalho como fatores primordiais às politicas de pessoal e que de certo modo, compõem o cotidiano profissional e impactam diretamente na avaliação de desempenho e na progressão profissional, mesmo que dialoguem com as premissas do Desprecariza SUS. As possibilidades de implantação de um PCCS que permita o reconhecimento e a valorização profissional devem ser repensadas a partir dos seus diferentes atores sociais, não apenas em busca da evolução, mas na luta contra qualquer fator de precarização das relações de trabalho. Unir vontade política e o debate sobre as formas de se fazer política de pessoal no SUS constitui o primeiro passo para tratar a carreira em saúde como um projeto profissional e estável. / Objective: The main objective of this work was to analyze how develops health work management in the light of the PCCS, comparing with the guidelines established by the Ministry of Health for the preparation of the PCCS and the “Desprecariza Sus” Program in two municipalities of Greater São Paulo. Methods: This was a qualitative research, using the bibliographical research; documentary and field, and of techiniques for data collection, such as semi-structured interviews with the managers of SMS search and focus groups with health professionals to working in UBS and hospital. The data analysis took into account the proposal of the content analysis of Bardin, from thematic core, core of meaning and the categories objects of study. Results: The PCCS of the studied municipal districts meet the Nacional Guidelines of PCCS, contemplating the premises “Desprecariza SUS” ind the fight against precarious link. However, the PCCS is little known by the severs, in addition to weaknesses in the evolution of criteria about the server the performance evaluation and permanent education policies, perceived as assumptions of valuation and recognition of professional by MS. It was noted also that there are differences in the treatment of statutory and “celetistas” servers, non-inclusion of categories the health; the non-recognition of the qualification/training as one of the pillars for development, generating therefore, dissatisfaction and frustration with regard to personnel policies practiced in both municipalities. Conclusion: The PCCS of the studied municipal districts do not consider the working condition as key factor to personal policies and that in a way, make up the everyday professional and impact directly on performance evaluation and professional progression, even though discussion with the premises of “Desprecariza SUS”. The possibilities of deplouing a PCCS allowing the recognition and the professional valuation shoud be reconsidered from the different social actors, not only in search of evolution, but in the fight against any factor of precariousness of work relationships. Unite political will and the debate on the ways to make personnel policy in the SUS is the first step to treat health career like as a professional and stable project. / BV UNIFESP: Teses e dissertações

Made available in DSpace on 2014-06-11T19:27:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-01-17Bitstream added on 2014-06-13T19:47:46Z : No. of bitstreams: 1 toledo_srb_me_rcla.pdf: 855056 bytes, checksum: b779cbe22ff2d6d9fd1d85017263989c (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Indicadores são ferramentas importantes para a tomada de decisões e para o empoderamento da população, na construção de melhores condições de vida. Sua utilização é uma forma de quantificar os resultados de ações de governo para, juntamente com análises e ações políticas, compor um método de avaliação global da gestão pública. Este trabalho teve por objetivo construir indicadores que avaliem a capacidade de gestão ambiental urbana dos governos locais das cidades médias paulistas, considerando que esta deve ser uma gestão essencialmente integrada aos demais setores da administração, desde sua estrutura administrativa até a participação da comunidade nas instâncias institucionais, garantindo avanços significativos na proteção ao meio ambiente. Foram consideradas três dimensões institucionais - normativa, participativa e financeira - para elaboração de índices parciais que, posteriormente, foram condensados em um indicador síntese, o Índice de Capacidade de Gestão - ICG, apresentado em três categorias, alta, média e baixa. Como decorrência, foi realizado o ranqueamento destas cidades. Na sua aplicação, é possível agregar informações quantitativas e qualitativas de várias dimensões, conferindo maior consistência às análises locais e regionais das cidades médias, configurando-se, portanto, como um importante subsídio ao planejamento regional e em avaliações de desempenho da gestão pública municipal. / Indicators are important tools for decision-making and the empowerment of the population looking for better life conditions. Their use is a way to quantify the government actions results for, jointly with subjective and politics analysis, compose a method of global evaluation of the public management. The purpose of this work is to verify the possibility to construct indicators capable to evaluate the capacity of urban environmental management by local governments of São Paulo medium cities. Considering that must be a management essentially integrated to the others sectors of the administration, since the administrative structure up to community participation in the institutional instances, guaranteeing advancements towards environmental protection. Three institutional dimensions - normative, participatory and financial - were considered for partial index elaboration that were condensed in a synthesis indicator, the Index of Management Capacity - ICG, presented in three categories, high, medium and low, and in the ranking of medium cities. In its application, it is possible to add quantitative and qualitative informations of several dimensions, granting bigger consistency to the local and regional analysis of medium cities. Therefore, this index configuring itself as an important subsidy to the regional planning and management performance evaluations.

Au cours des dernières décennies, la complexité croissante des systèmes de production et de leur commande a rendu crucial le besoin d’utiliser les méthodes formelles pour faire face aux problèmes relatifs au contrôle, à la fiabilité, au diagnostic des fautes et à l’utilisation optimale des ressources dans les installations de production. Cela concerne en particulier les systèmes automatisés de production (SAP), caractérisés par des cycles technologiques complexes qui doivent s’adapter à des conditions changeantes. Les SAP modernes sont des sous-systèmes interconnectés tels que des machines à commande numérique, des stations d'assemblage , des véhicules guidés automatisés (AGV), des cellules robotisées, des convoyeurs et des systèmes de contrôle par ordinateur. Les fabricants utilisent des machines automatisées et des contrôleurs pour assurer des produits de qualité plus rapidement et plus efficacement. Aussi, ces systèmes automatisés peuvent fournir des informations essentielles pour aider les gestionnaires à prendre les bonnes décisions. Cependant, en raison de la grande flexibilité des SAP, des défaillances telles qu’un mauvais assemblage ou le dépôt d’une pièce dans un tampon inapproprié peuvent se produire lors du fonctionnement du système. De tels dysfonctionnements diminuent la productivité du système générant ainsi des pertes économiques et des effets perturbateurs sur le système. En conséquence, le problème de l’optimisation des performances des SAP est impératif.Cette thèse se focalise sur l’évaluation et l’optimisation des performances des systèmes de production automatisés via le modèle des réseaux de Pétri temporisés. / In the last decades, there has been a constant increase in the awareness of company management about the importance of formal techniques in industrial settings to address problems related to monitoring and reliability, fault diagnosis, and optimal use of resources, during the management of plants. Of particular relevance in this setting are the so-called Automated Manufacturing Systems (AMSs), which are characterized by complex technological cycles that must adapt to changing demands. Modern AMSs are interconnected subsystems such as numerically controlled machines, assembly stations, automated guided vehicles, robots, conveyors and computer control systems. Manufacturers are using automated machines and controls to produce quality products faster and more efficiently. Meanwhile, these automated systems can provide critical information to help managers make good business decisions. However, due to the high flexibility of AMSs, failures such as a wrong assembly or a part put in a wrong buffer may happen during the operation of the system. Such failures may decrease the productivity of the system which has an economical consequence and can cause a series of disturbing issues. As a result, the performance optimization in AMSs are imperative. This thesis focuses on the performance evaluation and performance optimization of automated manufacturing systems using timed Petri nets models.

The main requirement of the user with regard to the constructive system is to have the guarantee of that this is really safe, that is, that it really comes to take care of to the requirements of structural security. The evaluation of structural performance, is one of the forms to determine if the system is really safe; the ideal would be that all and any constructive system, before being launched in the market, it was submitted to the performance evaluations leading in consideration the requirements of the users: security, habitability and support; only in such a way, if it would have the guarantee of that possible problems presented during the evaluation, they would not be repassed the users, being corrected in its initial stage. Therefore, in this work, the performance evaluation happened of inverse form, where the constructive system was evaluated by means of assays of field after the residences being concluded. The carried through assays of field had looked for to evaluate the structural performance of the residences of soil-cement and cellular concrete through the assays of verification of resistance the impacts, occupation loads, verification of the behavior of the leaf (door) submitted the abnormal maneuvers and evaluation through the criteria of the state has limited of use. In such a way, the behavior of these residences through the comparison could be evaluated enters the gotten results in the assays of field and the criteria established for the Projects of Norms of the ABNT nos 02.136.01.001, 02.136.01.002 e 02.136.01.004 (ABNT, 2004) 2004 that it evaluates the performance of residences, well as, to verify the constructive systems that had not taken care of to the established criteria, indicating its imperfections, guaranteeing with this not the occurrence of these in future constructions. / A principal exigência do usuário com relação ao sistema construtivo é ter a garantia de que este é realmente seguro, ou seja, que venha realmente a atender aos requisitos de segurança estrutural. A avaliação de desempenho estrutural, é uma das formas para determinar se o sistema é realmente seguro; o ideal seria que todo e qualquer sistema construtivo, antes de ser lançado no mercado, fosse submetido às avaliações de desempenho levando em consideração as exigências dos usuários: segurança, habitabilidade e sustentabilidade; somente desta forma, se teria a garantia de que possíveis problemas apresentados durante a avaliação, não seriam repassados aos usuários, sendo corrigidos em sua etapa inicial. Neste trabalho, a avaliação de desempenho aconteceu de forma inversa, onde o sistema construtivo foi avaliado por meio de ensaios de campo depois das unidades habitacionais estarem concluídas. Os ensaios de campo realizados procuraram avaliar o desempenho estrutural das unidades habitacionais de solo-cimento e concreto celular através da verificação da resistência a impactos, cargas de ocupação, verificação do comportamento da folha (porta) submetida a manobras anormais e avaliação através dos critérios do estado limite de utilização. Desta forma, pôde-se avaliar o comportamento destas residências através da comparação entre os resultados obtidos nos ensaios de campo, e os critérios estabelecidos pelos Projetos de Normas nos 02.136.01.001, 02.136.01.002 e 02.136.01.004 (ABNT, 2004) que apresentam os métodos para avaliar o desempenho de edifícios habitacionais, bem como verifica os sistemas construtivos que não atenderam aos critérios estabelecidos, indicando suas falhas, garantindo com isso a não ocorrência destas em construções futuras. / Mestre em Engenharia Civil

O setor de saúde suplementar no Brasil passou por transformações a partir da regulação do mercado pela Lei 9.656/98 e a criação da ANS – Agência Nacional de Saúde Suplementar, em 2000. A regulação trouxe avanços consolidando critérios para a entrada no mercado e funcionamento das OPS – Operadoras de Planos de Assistência à Saúde. A ANS criou o Programa de Qualificação da Saúde Suplementar, com o objetivo de melhorar a qualidade dos serviços prestados pelas OPS e privilegiar a transparência dos resultados da avaliação do desempenho do setor. Para avaliar e ter controle constante do desempenho das OPS, a ANS selecionou indicadores econômico-financeiros para classificar a dimensão da qualidade econômico-financeira do Programa. Pretendeu-se com este estudo verificar se os indicadores econômico-financeiros, selecionados pela ANS são relevantes para avaliar e classificar o desempenho das OPS, comparando-os com os indicadores econômico-financeiros tradicionais recomendados pela literatura, selecionados com a utilização da técnica estatística de AF - Análise Fatorial. A pesquisa foi desenvolvida com os dados das demonstrações contábeis referentes ao ano de 2004, de 211 OPS, das modalidades de medicina de grupo, cooperativa médica, filantropia e autogestão, disponíveis no banco de dados da ANS. Calcularam-se os indicadores para as 211 OPS, sendo utilizados para os estudos estatísticos o programa Excel®, da Microsoft®, e o software SPSS® 13.0. Aplicou-se inicialmente a AF ao conjunto de 10 indicadores, para redução e seleção dos mesmos, que foram sintetizados a 2 fatores principais. Aplicou-se também a AF ao conjunto de 8 indicadores utilizados pela ANS, para verificar a possibilidade de redução e chegou-se ao resultado de 2 fatores principais. Observou-se que os fatores encontrados pela AF em ambas as aplicações estão constituídos por 5 indicadores, que poderão compor a avaliação e classificação do desempenho econômico-financeiro dessas empresas. Em seguida, fizeram-se as classificações das OPS, sendo a primeira com os indicadores tradicionais selecionados pela AF e a segunda com os indicadores utilizados pela ANS. As classificações obtidas segundo os indicadores utilizados pela ANS, foram comparadas às classificações utilizando os indicadores tradicionais apontados pela AF. Observou-se que há proximidade entre as classificações das OPS, considerando os resultados obtidos. Assim, conforme a amostra trabalhada e análises realizadas, considerou-se que os indicadores utilizados pela ANS são relevantes para avaliar e classificar o desempenho das OPS. / The private health sector in Brazil has gone through changes since the passing of Law 9656, and the creation of ANS - Agencia Nacional de Saúde Suplementar (National Supervisor for Private Health Assistance) in the year 2000, both responsible for the implementation of market regulation. This led to criteria for the creation and functioning of OPS’s – Operadoras de Plano de Saúde (HMO’s). ANS created the Program of Qualification of Private Health Providers, aiming at improving the quality of services rendered by the OPS’s and at priviledging transparency in the results of the evaluation of the system. In order to evaluate and constantly control the performance of OPS’s, ANS selected economic and financial indicators to classify the extent of the financial and economic quality of the Program. This study aimed at examining whether these traditional indicators selected by ANS are relevant in the evaluation of the performance of OPS’s, in comparison with the indicators suggested by the literature in the area, and selected by means of the statistic technique of FA – Factor Analysis. The research took into account data provided by financial statements relating to 2004, of 211 OPS’s including group assistance, medical cooperative, philanthropy and self-management, with data available in the ANS database. The indicators were used with the 211 OPS’s, and the statistic studies were carried out with the use of Excel, by Microsoft, and the software SPSS 13.0. Initially, FA was applied to the set of 10 indicators, so as to reduce and select them, and they were narrowed down to two main factors. FA was also applied to the set of 8 indicators used by ANS, to check the possibility of reduction, and the result reached was 2 main factors. The study showed that the factors found by FA in both uses consisted of 5 indicators, which may compose the evaluation and classification of economic and financial performance of these enterprises. After that, the OPS’s were first classified with the traditional indicators selected by FA, and then with the indicators used by ANS. The classification obtained according with the indicators used by ANS was compared with the one obtained through the traditional indicators appointed by FA. The results obtained point to very close classification of OPS’s. Thus, according to the sample used and the analises performed, we can consider that the indicators chosen by ANS are relevant to evaluate and classify the performance of OPS’s.

CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / INTRODUÃÃO. O rÃpido envelhecimento populacional traz desafios para que os indivÃduos atinjam uma longevidade ativa e saudÃvel. Os cÃnceres de pele sÃo problemas clÃnicos comuns e quando nÃo identificados prontamente sÃo causa importante de morbidade e mortalidade na populaÃÃo geriÃtrica. A identificaÃÃo mais sistemÃtica de casos de cÃncer de pele na prÃtica clÃnica torna-se, entÃo, fundamental, particularmente no nÃvel primÃrio de atenÃÃo à saÃde. OBJETIVO. Avaliar o desempenho dos mÃdicos do Programa de SaÃde da FamÃlia na de identificaÃÃo de casos de cÃncer de pele em idosos do municÃpio de Fortaleza, CearÃ. MATERIAL E MÃTODOS. Realizou-se estudo transversal para avaliar o desempenho na identificaÃÃo de cÃncer de pele por mÃdicos do Programa de SaÃde da FamÃlia de duas maneiras. Primeiro, por meio do exame clÃnico de uma amostra de 200 pacientes com idade igual ou superior a 60 anos, atendidos nas Unidades BÃsicas de AtenÃÃo à SaÃde da FamÃlia e Comunidade, que foi independentemente examinada por 20 mÃdicos do Programa de SaÃde da FamÃlia e por um dermatologista, O exame do dermatologista e o exame histopatolÃgico das lesÃes foram utilizados como padrÃo-ouro de referÃncia. Segundo, mediante a anÃlise, por 33 mÃdicos residentes em Medicina de FamÃlia e Comunidade, de 14 fotografias de lesÃes cutÃneas de pacientes idosos. RESULTADOS. O exame clÃnico realizado por mÃdicos do Programa de SaÃde da FamÃlia, como teste diagnÃstico da presenÃa de cÃncer de pele, apresentou uma sensibilidade de 21,4% (IC de 95%, 0,0%-42,9%), uma especificidade de 82,3% (IC de 95%, 76,8%-87,8%), valor preditivo positivo de 8,3 % (IC de 95%, 0,0% - 17,4%) e valor preditivo negativo de 93,3% (IC de 95%, 82,6% - 100,0%). O desempenho dos mÃdicos residentes de Medicina de FamÃlia e Comunidade na identificaÃÃo de casos positivos teve uma sensibilidade de 62,77% (IC de 95%, 56,2%-69,3%) e uma especificidade de 71,8% (IC de 95%, 65,6%-78,1%), valor preditivo positivo de 8,3 % (IC de 95%, 14,0%-29,2%) e valor preditivo negativo de 95,9% (IC de 95%, 95,1%-96,8%). Por meio da anÃlise de fotografias, observou-se com uma sensibilidade mÃdia de 51,5% para identificaÃÃo de carcinoma basocelular, de 62,1% na identificaÃÃo de carcinoma espinocelular, e de 87,8% na identificaÃÃo de melanoma. CONCLUSÃO. O desempenho dos mÃdicos do Programa de SaÃde da FamÃlia na identificaÃÃo de cÃncer de pele requer aperfeiÃoamento, dado que a grande maioria dos casos nÃo està sendo diagnosticada quando da consulta mÃdica. O treinamento destes profissionais no reconhecimento de lesÃes neoplÃsicas de pele pode efetivamente contribuir para reduÃÃo da morbidade e eventual mortalidade destas condiÃÃes clÃnicas

Dans cette thèse, nous étudions les problèmes d'incertitudes dans les modèles probabilistes et tentons de déterminer leur impact sur l'analyse de performances et le dimensionnement des systèmes. Nous considérons deux aspects du problème d'imprécision. Le premier, consiste à étudier des chaînes en temps discret dont les probabilités ou taux de transition ne sont pas parfaitement connus. Nous construisons de nouveaux algorithmes de calcul de bornes par éléments sur les vecteurs de distribution stationnaires de chaînes partiellement spécifiées. Ces algorithmes permettent de déterminer des bornes par élément à chaque étape de calcul. Le second aspect étudié concerne le problème de mesures de traces de trafic réelles dans les réseaux. Souvent très volumineuses, la modélisation des traces de trafic est généralement impossible à effectuer de façon suffisamment précise et l'adéquation avec une loi de probabilité connue n'est pas assez réaliste. Utilisant une description par histogramme du trafic, nous proposons d'appliquer une nouvelle méthode d’évaluation de performance des réseaux. Fondée sur la comparaison stochastique pour construire des bornes optimales de supports réduits des histogrammes de trafics et sur la notion de monotonie stochastique des éléments de réseau, cette méthode permet de définir, de manière très pertinente, des garanties sur les mesures de performance. Nous obtenons en effet des bornes stochastiques supérieures et inférieures sur la longueur du tampon, les pertes, etc. L'intérêt et l'impact de notre méthode sont présentés sur diverses applications : éléments de réseau, AQM, réseaux de files d'attente, file avec processus d'arrivée non-stationnaire, etc / This thesis is devoted to the uncertainty in probabilistic models, how it impacts their analysis and how to apply these methods to performance analysis and network dimensioning. We consider two aspects of the uncertainty. The first consists to study a partially specified Markov chains. The missing of some transitions in the exact system because of its complexity can be solved by constructing bounding systems where worst-case transitions are defined to obtain an upper or a lower bound on the performance measures. We propose to develop new algorithms which give element-wise bounds of the steady-state distribution for the partially specified Markov chain. These algorithms are faster than the existing ones and allow us to compute element-wise bounds at each iteration.The second aspect studied concerns the problem of the measurements of real traffic trace in networks. Exact analysis of queueing networks under real traffic becomes quickly intractable due to the state explosion. Assuming the stationarity of flows, we propose to apply the stochastic comparison method to derive performance measure bounds under histogram-based traffics. We apply an algorithm based on dynamic programming to derive optimal bounding traffic histograms on reduced state spaces. Using the stochastic bound histograms and the monotonicity of the networking elements, we show how we can obtain, in a very efficient manner, guarantees on performance measures. We indeed obtain stochastic upper and lower bounds on buffer occupancy, losses, etc. The interest and the impact of our method are shown on various applications: elements of networks, AQM, queueing networks and queue with non-stationary arrival process

L'explosion de demande de bande passante est une conséquence de l'augmentation du volume de trafic. Il est important de proposer des mécanismes pour transférer le trafic entre les réseaux interconnectés de manière efficace. D'autre part, il est prévu que les réseaux d'accès (optiques et mobiles) constituent les plus grands consommateurs d'énergie dans les réseaux optiques pour les dix prochaines années. Cette situation et l'impact croissant des réseaux sur l'environnement ont fait devenir l'efficacité énergétique dans les réseaux de télécommunications un thème important de recherche. Cette thèse se concentre donc sur la proposition de nouvelles solutions aux problèmes liées à l'augmentation du volume de trafic dans différentes segments des réseaux. Tout d'abord, nous avons étudié différents schèmes de transfert du trafic entre les réseaux interconnectes en utilisant la synchronisation. Puis, nous avons exploré la possibilité d'offrir différents services dans les réseaux intégrés optiques-mobiles. Nous avons présenté une nouvelle architecture pour la conception de l'unité de réseau optique (ONU). Ensuite, nous nous sommes focalisés sur l'économie de l'énergie et des solutions efficaces pour l'allocation de bande passante ont été proposées. Nous avons également proposé un algorithme qui fournit l'efficacité énergétique pour les récepteurs sans fil dans les ONUs hybride. Une analyse des performances en utilisant modèles de files d'attente a été présentée. Finalement, nous avons analysé le trafic hétérogène dans l'ONU hybride, et nous avons proposé un cadre pour un algorithme d'ordonnancement qui puisse mettre à jour les règles de service de façon dynamique / A big growth in the number of subscribers is increasing the traffic volume passing through each sector in a telecommunication network. Mechanisms are required to solve the traffic shift problem between two sectors of the network in an efficient way. Additionally, it is expected that the access networks (optical and wireless) will constitute the largest energy consumers among the networks for the next ten years. This situation and the increasing impact of networks on the environment have made become the energy efficiency in telecommunication networks an important theme for researches. This dissertation hence focuses on the proposition of novel solutions for deal with the problems due to the growing of traffic in different segments of the network. Firstly, we have studied the traffic shift between interconnected networks by using the synchronization as technique to solve this problem. Secondly, we have explored the possibility of provisioning different services over the integration of optical-wireless technologies, which has been considered as a promising candidate for the deployment of high-speed access networks. Architecture of design for the Optical Network Unit (ONU) is presented. Then, energy efficiency has been focused and effective bandwidth management solutions have been proposed. We have also proposed an energy efficiency algorithm for wireless receiver at hybrid ONUS. A performance analysis by queuing models was presented for the implementation of proposed solutions. Finally, we have analyzed the heterogeneous traffic at hybrid ONU, and we have proposed a framework for a scheduling algorithm considering the characteristics of different traffic sources