Alors que le transport fluvial et les ports fluviaux ont contribué au développement des métropoles, ils ont respectivement connu depuis 1945 une chute des trafics et une déconnexion progressive du tissu urbain. Les modes de production et de distribution des marchandises suivent aujourd'hui une logique routière, mais les politiques de transport, européennes, nationales et métropolitaines, encouragent de plus en plus le recours à des échanges plus durables. L'Ile-de-France, qui se distingue des pays de l'Europe du Nord en termes d'infrastructures et comme en termes de débouchés portuaires, connait néanmoins une croissance des trafics fluviaux. Cette croissance est à mettre en lien avec la présence d'une grande métropole fluviale et d'un ensemble de sites portuaires. Cette thèse met en évidence l'organisation portuaire et des échanges fluviaux à l'échelle de l'Ile-de-France et de l'axe Seine. Elle montre l'originalité de cette organisation en Europe et le fait qu'elle ne se retrouve pas dans d'autres grandes villes européennes. Pour établir ce fait, il s'avère utile de recourir à la fois à l'analyse statistique des trafics portuaires et à des entretiens auprès des acteurs portuaires et métropolitains pour cerner les contradictions entre leurs attentes et leurs démarches respectives. Les résultats soulignent une adaptation des sites portuaires aux besoins de la métropole, par l'autorité portuaire qui a encouragé la spécialisation des trafics et leur mise en réseau, afin de justifier leur présence dans les territoires urbains. L'autorité portuaire Ports de Paris a ainsi dû développer une politique d'aménagement et d'insertion urbaine de ses sites à l'échelle régionale. Cependant, le manque de coordination et de compréhension entre les acteurs portuaires et urbains est le principal frein, pour l'acceptabilité des sites portuaires dans les territoires métropolitains

Sistemas de transmissão de energia elétrica em corrente contínua e alta tensão baseados em tecnologia de conversores a fonte de tensão (VSC-HVDC), ao contrário de linhas de transmissão em corrente alternada, operam como elementos de controle de variáveis elétricas, podendo ser úteis na estabilidade do sistema de potência. Mas apesar desta vantagem, sistemas VSC-HVDC possuem limitações no desempenho estável, o que enseja o desenvolvimento de uma metodologia para mapeamento de suas zonas de operação estável e possíveis regiões de instabilidade. Inicialmente estudou-se os detalhes da tecnologia VSC-HVDC tais como o funcionamento da eletrônica de potência e estratégias de controle utilizadas. Em seguida, investigou-se os modelos de geradores síncronos para interconexão com o lado CA das estações conversoras do VSC-HVDC. E, finalmente, aplicou-se a tecnologia VSC-HVDC sobre um modelo de sistema de potência com uma estação conversora localizada em um porto offshore e uma outra no continente, próxima à rede de alta tensão em corrente alternada. Simulações e análise deste sistema foram executadas considerando várias condições operacionais. O gráfico de potência gerada e consumida, obtido pela aplicação da metodologia, apresenta grande potencial de uso prático como por exemplo sua implementação na interface homem-máquina da estação de operação do porto offshore, provendo informação em tempo real de alto nível ao operador do sistema elétrico do porto offshore e consequentemente aumentando sua consciência situacional quanto a proximidade dos limites de instabilidade. / High voltage direct current power transmission systems based on voltage source converters (VSC-HVDC), as opposed to alternating current ones, operates as elements of control of electrical variables, being useful for stability of power system. Besides this advantage, VSC-HVDC systems have limitations in stable performance, which instigates the development of a methodology for mapping its operational zones of stability and possible regions of instability. The author initially studied the details of the VSC-HVDC technology such as the power electronic principles and the control strategies used on this research. Subsequently, the author investigated synchronous generator models for interconnection on the AC side of the VSC-HVDC converter stations. Finally, the author applied the VSC-HVDC technology on a model of power system with two converter stations, one located on an offshore port and the other on the shore, next to an alternating current high voltage power grid. Simulations and analysis of this system were carried out considering various operational conditions. The graphic of generated and consumed power on offshore port, obtained by the application of the methodology for mapping operational zones, presents a great potential of being implemented in the man-machine interface of an operation workstation, thus providing high level online information for the operator of the offshore port electrical system and consequently improving its situational awareness of the proximity to instability limits.

Made available in DSpace on 2016-04-26T20:22:57Z (GMT). No. of bitstreams: 1 Pedro Ivo Vieira Silva.pdf: 1191357 bytes, checksum: 3a6554abd56f10bcc6d4a9b9aa98e671 (MD5) Previous issue date: 2014-07-07 / The following study deals with the exploitation of Private Port Terminals (TUP) and the treatment given by the new port statute (Law n. 12.815/2013). The study has three main aims. The first one brings the authorization as a legal instrument of public service concession for an exploitation in a more flexible system. The second one aims specifically the port authorization and the logic of the new port statute focusing on how the State interfere the exploration of TUPs. The third and last one regard the regulatory asymmetry between public and private port terminals from the perspective of public policy brought by the new port statute / O presente estudo trata da exploração de Terminais Portuários de Uso Privado (TUPs) e o tratamento conferido pelo novo marco legal de 2013 (Lei n. 12.815). O estudo possui três objetivos centrais. O primeiro é compreender melhor a utilização da autorização como instrumento de outorga de serviço público para sua exploração em um regime mais aberto, flexível e regido majoritariamente pelo direito privado. O segundo é analisar especificamente a autorização portuária dentro da lógica do novo marco legal com foco nas principais hipóteses de ingerência estatal na liberdade de exploração dos TUPs. O terceiro e último objetivo procura desenvolver a assimetria regulatória existente entre os terminais públicos e privados sob a perspectiva da política pública trazida pelo novo marco regulatório

Rome et Éphèse sont deux villes portuaires emblématiques de la Méditerranée antique ; la première fut le centre de l’Empire romain et la seconde devint la capitale romaine d’Asie mineure à la fin du 1er s. av. J.-C. Leur rayonnement économique et commercial en Méditerranée reposa notamment sur leur système portuaire. Cette étude a pour vocation de retranscrire le développement économique de ces deux cités par le signal des paléo-pollutions. Pour mener à bien ces travaux, nous avons prélevé des carottes dans les archives sédimentaires des bassins portuaires sur lesquels les isotopes du plomb ont été mesurés. La reconstitution des paléo-environnements par la géochimie élémentaire a été un préalable indispensable. Sur le temps long, la dynamique des masses d’eau portuaires fut visiblement soumise à la progradation des systèmes deltaïques, ainsi qu’aux interventions humaines qui modifièrent les environnements aquatiques initialement ouverts et bien oxygénés au profit de milieux fermés en déficit de dioxygène. Ce confinement des bassins portuaires franchit un seuil irréversible pour la navigation dès lors qu’un régime épilimnique se mit en place en raison d’une trop faible profondeur de la colonne d’eau. Les niveaux de contamination au plomb ont relativement bien enregistré l’état de santé économique de Rome et d’Éphèse qui évolua notamment au gré des périodes de prospérité et de troubles. Cependant, l’évolution des conditions environnementales et les multiples dragages semblent avoir altéré une partie de ces enregistrements. Les données isotopiques du plomb, converties en paramètres géologiques (Tmod, μ et к), nous ont également permis d’émettre des hypothèses sur les sources d’approvisionnement en minerais de plomb à l’origine de ces pollutions. On peut en retenir que les stratégies d’alimentation en plomb à l’époque romaine furent locales. En effet, il semble assez logique que ces deux cités aient dominé les espaces économiques environnants avec lesquelles elles étaient en contact. En revanche, alors que l’entrée dans le Moyen Âge s’accompagne du déclin de Rome, Éphèse retrouve sa prospérité passée avec l’importation de plomb hercynien d’Europe de l’Ouest produit massivement à la suite de la révolution économique médiévale. / Rome and Ephesus are two iconic harbor cities of the ancient Mediterranean; the first was the center of the Roman Empire and the second became the Roman capital of Asia Minor at the end of the 1st c. BC. The economic and commercial influence of these two ports in the Mediterranean depended heavily on their harbor systems. The aim of this study is to discern the economic development of Rome and Ephesus from the geochemical signals of the pollution they were exposed to. To this end, we drilled cores through the sedimentary archives of the two ancient harbors and measured major and trace element concentrations and Pb isotope compositions. Both harbors were subject to delta progradation, Rome by the Tiber and Ephesus by the Caÿster, which changed the aquatic environments from being initially open and well oxygenated to becoming closed and anoxic. The harbor basins finally shut down for shipping when an epilimnic system came into place due to too shallow a depth of the water column. Although changing environmental conditions and multiple dredgings appear to have altered some parts of the geochemical record, the pollution levels of lead quite accurately reflect the state of the economic health of Rome and Ephesus, which evolved the most during periods of prosperity and disorder. Pb isotope data, converted into geological parameters (Tmod, μ and к), further allowed deducing the provenance of the geological sources of lead ores at the origin of the pollution. Based on these results, it appears that lead ore supplies during the Roman period were of local origins, reflecting how Rome and Ephesus dominated the surrounding economic areas with which they were in contact. However, while the beginning of the Middle Ages is accompanied by a decline of Rome, Ephesus regains its past prosperity with the importation of Hercynian lead from western Europe. It was produced massively as a result of the medieval economic revolution that Europe experienced from the 10th century onward.

Cette thèse porte sur l’étude des systèmes de lois de conservation couplés par une interface mobile. Un modèle dynamique d’un procédé d’extrusion obtenu à partir des bilans de masse, de taux d’humidité et d’énergie est proposé. Ce modèle exprime le transport de la matière et de la chaleur dans une extrudeuse par des systèmes d’équations hyperboliques définis sur deux domaines complémentaires variant dans le temps. L’évolution des domaines est dictée par une Equation aux Dérivées Ordinaires (EDO) issue du bilan de masse total dans une extrudeuse. Par le principe des applications contractantes l’existence et l’unicité de la solution pour cette classe de système sont prouvées. Le problème de stabilisation de l’interface mobile est aussi abordé en utilisation le formalisme des systèmes à retard. La méthode des caractéristiques permet de représenter le système composé des équations issues du bilan de masse par un système à retard sur l’entrée. Au moyen d’un contrôleur prédictif la position de l’interface est stabilisée autour d’un point équilibre. La dernière partie de ce travail est dédiée à l’étude des systèmes Hamiltoniens à ports frontière couplés par une interface mobile. Ces systèmes augmentés de variables couleur qui sont des fonctions caractéristiques du domaine peuvent s’exprimer comme des systèmes Hamiltoniens à ports frontière / This thesis is devoted to the analysis of Partial Differential Equations (PDEs) which are coupled through a moving interface. The motion of the interface obeys to an Ordinary Differential Equation (ODE) which arises from a conservation law. The first part of this thesis concerns the modelling of an extrusion process based on mass, moisture content and energy balances. These balances laws express heat and homogeneous material transport in an extruder by hyperbolic PDEs which are defined in complementary time-varying domains. The evolution of the coupled domains is given by an ODE which is derived from the conservation of mass in an extruder. In the second part of the manuscript, a mathematical analysis has been performed in order to prove the existence and the uniqueness of solution for such class of systems by mean of contraction mapping principle. The third part of the thesis concerns the transformation of an extrusion process mass balance equations into a particular input delay system framework using characteristics method. Then, the stabilization of the moving interface by a predictor-based controller has been proposed. Finally, an extension of the analysis of moving interface problems to a particular class of systems of conservations laws has been developed. Port-Hamiltonian formulation of systems of two conservation laws defined on two complementary time-varying intervals has been studied. It has been shown that the coupled system is a port-Hamiltonian system augmented with two variables being the characteristic functions of the two spatial domains

Sistemas de transmissão de energia elétrica em corrente contínua e alta tensão baseados em tecnologia de conversores a fonte de tensão (VSC-HVDC), ao contrário de linhas de transmissão em corrente alternada, operam como elementos de controle de variáveis elétricas, podendo ser úteis na estabilidade do sistema de potência. Mas apesar desta vantagem, sistemas VSC-HVDC possuem limitações no desempenho estável, o que enseja o desenvolvimento de uma metodologia para mapeamento de suas zonas de operação estável e possíveis regiões de instabilidade. Inicialmente estudou-se os detalhes da tecnologia VSC-HVDC tais como o funcionamento da eletrônica de potência e estratégias de controle utilizadas. Em seguida, investigou-se os modelos de geradores síncronos para interconexão com o lado CA das estações conversoras do VSC-HVDC. E, finalmente, aplicou-se a tecnologia VSC-HVDC sobre um modelo de sistema de potência com uma estação conversora localizada em um porto offshore e uma outra no continente, próxima à rede de alta tensão em corrente alternada. Simulações e análise deste sistema foram executadas considerando várias condições operacionais. O gráfico de potência gerada e consumida, obtido pela aplicação da metodologia, apresenta grande potencial de uso prático como por exemplo sua implementação na interface homem-máquina da estação de operação do porto offshore, provendo informação em tempo real de alto nível ao operador do sistema elétrico do porto offshore e consequentemente aumentando sua consciência situacional quanto a proximidade dos limites de instabilidade. / High voltage direct current power transmission systems based on voltage source converters (VSC-HVDC), as opposed to alternating current ones, operates as elements of control of electrical variables, being useful for stability of power system. Besides this advantage, VSC-HVDC systems have limitations in stable performance, which instigates the development of a methodology for mapping its operational zones of stability and possible regions of instability. The author initially studied the details of the VSC-HVDC technology such as the power electronic principles and the control strategies used on this research. Subsequently, the author investigated synchronous generator models for interconnection on the AC side of the VSC-HVDC converter stations. Finally, the author applied the VSC-HVDC technology on a model of power system with two converter stations, one located on an offshore port and the other on the shore, next to an alternating current high voltage power grid. Simulations and analysis of this system were carried out considering various operational conditions. The graphic of generated and consumed power on offshore port, obtained by the application of the methodology for mapping operational zones, presents a great potential of being implemented in the man-machine interface of an operation workstation, thus providing high level online information for the operator of the offshore port electrical system and consequently improving its situational awareness of the proximity to instability limits.

University of Macau / Faculty of Social Sciences and Humanities / Department of Government and Public Administration

L'espace portuaire industriel et logistique français est largement héritier de la période des Trente Glorieuses. Celle-ci a vu naître les zones industrialo-portuaires, initiées, gérées, exploitées par l'État au travers d'établissements dédiés, les ports autonomes. Ce système est déstabilisé par la globalisation de l'industrie maritime et la libéralisation du secteur portuaire, entamées dans les années 1980. Ces deux tendances participent à la diffusion à l'échelle mondiale du modèle de gestion dit landlord port, selon lequel l'exploitation portuaire est confiée à des opérateurs privés. Les entités publiques gestionnaires de ports (ou autorités portuaires) voient quant à elles leur champ d'action recentré autour de l'aménagement et de la gestion de leur domaine. En France, la réforme portuaire de 2008 sanctionne cette transition; les grands ports maritimes se substituent aux ports autonomes. Cette thèse appréhende les effets de ces mutations sur la production et la gestion de l'espace portuaire, saisies à partir des pratiques des autorités portuaires des grands ports français. Tout en restant placées sous le contrôle de l'État, celles-ci voient leur autonomie et leurs compétences s'élargir. Il en découle un déploiement spatial et une diversification de leurs interventions, traditionnellement centrées sur la construction et l’entretien des infrastructures portuaires. La trajectoire de l'aménagement portuaire fait écho à celle d'autres espaces infrastructurels (ferroviaires, aéroportuaires). Elle met en lumière les continuités et les ruptures qui marquent l'action de l'État au cours des dernières décennies dans l'aménagement du territoire. / Legacies from the Glorious Thirty still contribute to shape French industrial and logistic port spaces to a large extent, from morphological, economic and institutional point of views. During this period, maritime industrial development areas have been created. There were managed and operated by the state, through dedicated public bodies named ports autonomes. The globalization of the maritime industry and the liberalization of the port sector which started during the 1980s have unsettled this system. These two tendencies have led to the adoption of the "landlord port" management model by main ports worldwide. In this model, port operation is conducted by private enterprises while public port management entities (or port authorities) focus on planning, developing and managing land in the port area. In France, this transition occurred with the port reform of 2008, through which ports autonomes became grands ports maritimes. This PhD research aims at understanding the effects of these changes on port land planning, development and management, through the analysis of the practices of the port authorities of French main seaports. The latter are still under the control of the state, but their autonomy and their competencies have been enlarged. While they traditionally focus on the construction and the maintaining of port infrastructures, their interventions tend to spread in space and to diversify. The trajectory of port space management and development echoes that of other infrastructural spaces (rail or airport spaces). This work contributes to shed light on the continuities and ruptures of state intervention in territorial planning and development in the last decades.

Cette thèse répond à une problématique de commande frontière d’une conduite acoustique dont l’actionnement est assuré par un réseau d’actionneurs/capteurs co-localisés constituant une peau active. Pour faire face au caractère intrinsèquement multiphysique de ce problème vibro-acoustique, nous avons choisi dans cette thèse d’employer une approche hamiltonienne à ports, approche structurée basée sur la représentation des échanges entre différents domaines énergétiques au sein d’un système et entre différents systèmes. Nous avons proposé une modélisation hamiltonienne à ports de l’équation d’onde interconnectée à la frontière au système d’actionnement distribué, correspondant à une formulation 2D du problème physique. Nous avons développé une méthode de discrétisation spatiale basée sur l’utilisation de différences finies sur plusieurs grilles en quinconce qui préserve la structure hamiltonienne à ports de l’équation d’onde. Cette méthode permet en outre d’interconnecter facilement le système discrétisé avec d’autres sous-systèmes, dans le but de mettre en place un actionnement par exemple. Son principal avantage sur d’autres méthodes préservatives de structure réside dans sa simplicité de mise en œuvre qui découle de l’utilisation de différences finies. Concernant la commande du système vibro-acoustique, nous avons proposé une méthode de synthèse de loi de commande distribuée pour les systèmes régis par deux lois de conservation en 1D. L’originalité de cette méthode réside en le fait qu’elle repose sur le calcul d’invariants structuraux (fonctions de Casimir) exploités afin de modifier la structure du système en boucle fermée. Les conditions d’application sur un système 2D sont étudiées et des résultats numériques valident les lois de commande synthétisées. / This thesis deals with the boundary control of an acoustic by a network of co-localised sensors/actuators which constitutes a smart skin. In order to cope with this multiphysical problem, we chose to place our study in the framework of port-Hamiltonian systems, a structured approach based on the representation of energy exchanges between different energy domains between different systems of subsystems. We proposed a port-Hamiltonian model of the wave equation interconnected through its boundary to the distributed actuation system, which corresponds to a 2D formulation of the physical problem. We developed a spatial discretization method based on the use of finite differences on several staggered grids that preserve the port-Hamiltonian structure of the wave equation. This method also permits to easily interconnect the discretized system with other subsystems, which is convenient for instance for control purposes. Its main advantage over other structure preserving methods is its simplicity of implementation which stems from the use of finite differences. In order to control the vibro-acoustic system, we proposed a control law synthesis method for systems governed by two conservation laws in 1D. The originality of this method lies in the fact that it relies on the computation of structural invariants (Casimir functions) exploited in order to modify the structure of the system in closed loop. The conditions of application of these laws on a 2D system are studied and numerical results validate the synthesized control laws.

138f. / Submitted by Oliveira Santos Dilzaná (dilznana@yahoo.com.br) on 2013-08-16T13:01:10Z No. of bitstreams: 1 Dissertação Final Henrique Campos de Oliveira.pdf: 3181552 bytes, checksum: e92c6e461e4f28e41309e956df2db3f4 (MD5) / Approved for entry into archive by Ana Portela(anapoli@ufba.br) on 2013-08-16T18:08:54Z (GMT) No. of bitstreams: 1 Dissertação Final Henrique Campos de Oliveira.pdf: 3181552 bytes, checksum: e92c6e461e4f28e41309e956df2db3f4 (MD5) / Made available in DSpace on 2013-08-16T18:08:54Z (GMT). No. of bitstreams: 1 Dissertação Final Henrique Campos de Oliveira.pdf: 3181552 bytes, checksum: e92c6e461e4f28e41309e956df2db3f4 (MD5) Previous issue date: 2011 / CAPES / Esta dissertação busca descrever como ocorreu o processo decisório de incorporação do Porto Sul à Agenda do Governo do Estado da Bahia. Desse objetivo geral se destacam as seguintes questões específicas: Quais os grupos participantes, preponderantes na incorporação do Porto à agenda da política pública de infraestrutura de transporte? Quais eventos na esfera política proporcionaram a incorporação desse porto à agenda do estado? Como se procedeu a relação entres os principais grupos participantes? Para responder a essas questões, o estudo foi baseado na perspectiva analítica tradicional dos múltiplos fluxos de Kingdon (2003), sobre o processo decisório de agenda do Governo Federal estadunidense, nas áreas de saúde e transporte. A partir desse referencial adotado, foi elaborado um mapa analítico com apoio também, na literatura específica sobre políticas públicas de portos, levantada por meio de pesquisa bibliográfica extensiva, no banco de tese da Capes e nas bibliotecas da UFBA e USP. Bem como se buscou evidenciar a trajetória histórica de concepção de portos na RLS. A pesquisa empírica é caracterizada com um estudo de caso, no qual foram realizadas entrevistas semiestruturadas, com 28 participantes, identificados pela metodologia, bola de neve e pela literatura levantada. A análise das entrevistas foi realizada em três dimensões: o fluxo percepção do problema; o jogo de interesses; e delineamento das soluções. Ao final do trabalho, pode-se afirmar que o fluxo percepção do problema apresenta maior convergência com a incorporação do porto à agenda estadual, devido a eventos como a viabilidade da mina e a produção de grãos do oeste. O fluxo, jogo político, converge com a janela, por conta do alinhamento existente entre o Governo Estadual e Federal. Nesse fluxo, há limitações devido a interesses geopolíticos contra a construção do porto na RLS. Já o fluxo referente ao delineamento das soluções técnicas é o mais fragilizado pela participação consistente, tanto dos grupos de contestação local, quanto dos organismos de controle institucional, que acabam também, atuando na dimensão correspondente ao jogo de interesses. This paper seeks to describe the decision making process as it did to incorporate the South Port to the agenda of the Government of the State of Bahia. From this general aim is highlight the following specific questions: What are the predominant groups participating in the merger of the Port to the agenda of public policy for transportation infrastructure? What events in the political incorporation provided that port to the agenda of the state? As we proceeded the relationship as between the main groups involved? To answer these questions, the study was based on traditional analytical perspective of multiple streams of Kingdon (2003) on decision-making agenda of the federal government in health care and transportation. From this point of view adopted, an analytical map was produced with support also in the specific literature on public policies ports raised through extensive literature on the bank of the Capes and the thesis of the university libraries and USP. Well as it sought to highlight the historical trajectory design of ports in RLS. Empirical research is characterized with a case study in which interviews were conducted semi-structured interviews with 28 participants identified by the snowball method and raised in the literature. The analysis of interviews was conducted in three dimensions: perception of the flow problem, the game of interest, and design solutions. At the end of the work, it can be stated that the flow perception of the problem is more convergence with the incorporation of the port state to the agenda due to events such as the viability of the mine and the production of grain from the west. The political game flow converges with the window because of the alignment between the state and federal government. In this flow there are limitations due to geopolitical interests against the construction of the port in RLS. Since the flow for the design of technical solutions is most weakened by the consistent participation of both groups to challenge local and institutional control of bodies that also end up playing the game in the corresponding dimension of interest / Salvador