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Från Ugarit till Uppland : En studie om kontakter mellan Skandinavien och Medelhavsvärlden under den skandinaviska bronsåldern / From Ugarit to Uppland : A study about contacts between Scandinavia and the Mediterranean world during the Scandinavian Bronze AgeMehdi, Ibrahim January 2019 (has links)
This thesis studies the contacts between Scandinavia and the Mediterranean area during the Scandinavian Bronze Age. These contacts have been the topic of controversy for a long time as one side of the debate believes in direct contacts between Scandinavia and the Mediterranean area, and the other side believes that contacts between the two areas could only have been by down the line trading contacts. This thesis then aims to see what evidence there is that the contacts would have been direct or otherwise. This is done by studying the archaeological evidence as well as the pictographic depictions on rock art in Scandinavia and painted pottery from the Mediterranean area, as well as ships and ship technology to understand if Scandinavian ships would have been able to travel to the Mediterranean in the first place. Further, this thesis also studies the urn burials introduced to Scandinavia during the Bronze Age from northern Italy to see the spreading of ideas, as well as isotope analysis of bronze from Sweden and Denmark together with strontium analysis of Bronze Age individuals to form a complete picture about these contacts and how they took place.
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Klasická pěstounská péče (příprava, podmínky, průběh) a problematika kontaktů s biologickými rodiči / The foster care (preparation, conditions, process) and the issue of contacts with biological parentsLIŠKOVÁ FORNOUZOVÁ, Jana January 2019 (has links)
The diploma thesis deals with foster care and contacts with biological parents. The first chapter aims to the importance of family, family ties disorder and the CAN syndrome. The second chapter is focused on the substitute family care and its forms. The third chapter describes the foster care, what are the demands on the personality of the caring person, what the preparation looks like, which are the conditions and course of the foster care. The fourth chapter is focused on the child identity, contacts with biological parents and describes the process of assisted contacts.
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Campo Landeliano / Campo LandelianoBonilha Filho, Sergio de Moraes 14 October 2010 (has links)
Esta dissertação consiste em pesquisa sobre virtualidades possivelmente presentes nas teorias que incentivaram as primeiras tentativas de transmissão eletromagnética sem fios em fins do século XIX, reportando também ao deslocamento dessas teorias em direção a outras áreas do conhecimento. Após breve retrospectiva do processo de invenção do rádio - no qual concorreram esforços de diversos pesquisadores como James Clerk Maxwell, David Edward Hughes, Heinrich Rudolf Hertz, Nikola Tesla, Roberto Landell de Moura e Guglielmo Marconi o estudo revê vasta literatura relacionada ao campo da Parapsicologia, tentando encontrar informações mais detalhadas sobre contatos interdimensionais semelhantes aos descritos por Roberto Landell de Moura, Nikola Tesla e Thomas Alva Edison em depoimentos concedidos à mídia impressa no início dos anos 1900. Finalmente, consiste numa fabulação poética a partir desse contexto. / This is a survey of virtual potentialities of the inventions related to the early development of wireless technology at the end of nineteenth century, as well as its recurrence in other areas of knowledge from there onward. After a brief historical review on the radio invention (involving several scientists as James Clerk Maxwell, David Edward Hughes, Heinrich Rudolf Hertz, Nikola Tesla, Roberto Landell de Moura and Guglielmo Marconi) goes into a wider literature review on the parapsychology field wich brings more detailed information on interdimensional contacts as the ones described by Roberto Landell de Moura, Nikola Tesla and Thomas Alva Edison at newspapers and magazines in the early 1900s. As a result this is also a poetical view about this context.
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Inglês é fashion: a interferência da cultura americana na cultura brasileira - reflexões sobre língua e culturaMendes, Kelly Aparecida 22 November 2012 (has links)
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Previous issue date: 2012-11-22 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This essay discusses the theme of the interference of American culture in Brazilian culture,
manifested by words of English Language in the clothing trade in the city of São Paulo. It
aims to analyze the influence of American language and culture in the Brazilian context
focusing on linguistic practices and the relationship between language and culture. The
specific objective is to analyze the words of the English language presents on the names of
shops of three streets in the clothing trade in the city of São Paulo in what regards
grammatical classes and semantic aspects, and the relationship of those words with Brazilian
culture. The analysis will be based on theoretical reflections of scholars on cultural identities
and relationships between language and culture, which are revealing the influences of cultural
contacts promoted by globalization nowadays. In the specific case of this paper, we focus on
the hypothesis that there is an influence of American culture in Brazilian culture that
motivates the preference for words in the English language to compose the names (brands) of
shops, confirmed by the results obtained / Esta dissertação tem como tema a interferência da cultura americana na cultura brasileira,
manifesta pela presença de palavras de língua inglesa no comércio de vestuário na cidade de
São Paulo. Tem como objetivo geral analisar a influência da língua e da cultura americanas no
contexto brasileiro com ênfase nas práticas linguísticas e nas relações entre língua e cultura. O
objetivo específico é analisar as palavras de língua inglesa presentes nos nomes de lojas de
três ruas do comércio de vestuário da cidade de São Paulo no que tange a classes gramaticais
e aspectos semânticos, bem como a relação dessas palavras com a cultura brasileira. A análise
terá como base teórica as reflexões de estudiosos sobre as identidades culturais e a relações
entre língua e cultura, que são reveladoras das influências dos encontros culturais promovidos
pela globalização na atualidade. No caso específico deste trabalho, nos concentramos na
hipótese de que há uma influência da cultura americana na cultura brasileira que motiva a
preferência por palavras de língua inglesa na composição de nomes (marcas) de lojas,
confirmada por meio dos resultados obtidos
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Numerical modeling of dry wear : Experimental study of fretting wear, fretting wear simulations with debris entrapped and industrial applications of fretting wear models / Modélisation numérique de l'usure à sec : Étude expérimentale de l'usure de fretting, simulations d'usure par frottement avec des applications de débris piégés et industrielles de modèles d'usure de frettingDone, Vamshidhar 15 December 2017 (has links)
De nombreux modèles numériques sont proposés dans la littérature en utilisant des méthodes d'éléments finis et d'éléments finis discrets pour étudier l'usure par frottement, ils incluent à peine l'effet des débris d'usure. Ces modèles étant coûteux en termes de calcul, simuler un grand nombre de cycles d'usure par frottement n'est pas réalisable dans la pratique. Une nouvelle méthodologie est proposée qui ne nécessite que des propriétés de matériau en vrac comme les coefficients de frottement / usure et utilise des méthodes semi-analytiques pour simuler l'usure par frottement avec des débris piégés. Dans cette approche, les débris sont supposés être attachés à l'une des surfaces pendant le processus de fretting. Les résultats obtenus à partir de cette approche ont été comparés avec des expériences de fretting. La méthode proposée permet de saisir la profondeur d'usure et la largeur des cicatrices, et les résultats sont très proches de ceux observés dans les expériences. L'assemblage des soupapes des moteurs à combustion subit une usure par frottement en raison d'un phénomène complexe impliquant une rigidité structurelle et une tribologie de contact. L'usure des soupapes a de nombreux effets néfastes sur les performances du moteur. Il provoque une récession de la soupape entraînant des changements dans les connexions du mécanisme d'entraînement de la soupape, ce qui perturbe l'ouverture et la fermeture des soupapes. Avec des normes d'émission strictes, l'utilisation de lubrifiant pour réduire la friction au contact est limitée. Si l'usure à travers la circonférence n'est pas uniforme, il y aura une fuite de gaz et le moteur donne moins de puissance. Il est nécessaire de bien comprendre la raison de l'usure des soupapes et de développer un modèle numérique capable de prédire l'usure par frottement de la soupape pour le nombre d'heures de fonctionnement donné. Des expériences ont été réalisées pour comprendre le mécanisme d'usure et calculer les coefficients d'usure qui peuvent être utilisés dans le modèle numérique. Un modèle d'usure numérique est construit qui capture la rigidité structurelle de l'ensemble de soupape et le mécanisme d'usure au contact du siège. / Many numerical models are proposed in the literature using finite element and finite discrete element methods to study fretting wear, they barely include the effect of wear debris. These models being computationally expensive, simulating large number of fretting wear cycles is not practically feasible. A new methodology is proposed which needs only bulk material properties like friction/wear coefficients and uses semi-analytical methods to simulate fretting wear with entrapped debris. In this approach, debris are assumed to be attached to one of the surfaces during the fretting process. The results obtained from this approach were compared with fretting experiments. The proposed method permits to capture the wear depth and scar width, and results are very close to that observed in the experiments. Valve assembly of combustion engines undergo fretting wear due to a complex phenomenon involving structural stiffness and contact tribology. Valve wear has many detrimental effects on the engine performance. It causes valve recession leading to changes in connections of valve drive train in turn disturbing the opening and closing of valves. With stringent emission norms, usage of lubricant to reduce friction at the contact is restricted. If the wear across the circumference is not uniform, there will be leakage of gas and the engine gives lesser power output. There is a need to thoroughly understand the reason for valve wear and develop a numerical model that can predict valve fretting wear for the given number of operating hours. Experiments were performed to understand the wear mechanism and derive wear coefficients that can be used in the numerical model. A numerical wear model is built that captures structural stiffness of the valve assembly and wear mechanism at seat contact.
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Le circuit tribologique : Un outil d'optimisation du 3ème corps / The tribological circuit : An optimization tool for the 3rd bodyRolland, Julian 25 June 2018 (has links)
La plupart des montres mécaniques sont composées d’un échappement à ancre Suisse. Cet organe se situe à la fin du rouage et sert à entretenir et à compter les oscillations du balancier-spiral. Par l’intermédiaire de l’interface ancre / roue d’échappement, il est soumis à des sollicitations parfois extrêmes induisant un rendement faible, d’environ 35%. En outre, le maintien du lubrifiant au contact est délicat et les frottements occasionnés peuvent provoquer une usure prématurée des éléments du système. La première partie de ce travail a consisté au développement d’une démarche d’investigation et de compréhension du fonctionnement du contact entre l’ancre et la roue d’échappement par l’intermédiaire des concepts du triplet et du circuit tribologique. Une visualisation en temps réel du contact, par caméra rapide, a ainsi permis d’obtenir l’évolution de la vitesse réelle des corps en contact. Parallèlement, l’analyse des composants à différents instants de fonctionnement ont conduit à la détermination des débits de 1er et 3ème corps. Par ailleurs, afin de mieux comprendre le comportement tribologique local du contact, un modèle dynamique par éléments finis de l’échappement à ancre Suisse a été développé. A la suite de cette étude, un scénario relatif à la vie du contact a été proposé afin de décrire les différentes phases de fonctionnement de l’échappement. Malgré le rôle clé de la couche de 3ème corps formée pendant le vieillissement par l’activation du débit source, elle génère un débit d’usure qui peut être néfaste pour le mécanisme de montre. Ce résultat amène, par conséquent, à la nécessité de formuler et de réaliser un troisième corps « optimisé ». Dans une seconde partie, une optimisation du comportement de ce 3ème corps a donc été recherchée afin d’atteindre (à terme) une fiabilité à 10 ans et une usure contrôlée. Pour ce faire, deux technologies de lubrification du contact, i.e. fluide et solide, ont été utilisées. La lubrification fluide a été améliorée par texturation des surfaces. La puissance et le nombre de tirs laser ont ainsi été fixés afin de respecter les formes et dimensions des textures imaginées pour le triplet tribologique étudié. Afin de s’affranchir de l’assèchement en lubrifiant fluide du contact au cours du temps, une lubrification solide a été introduite par imprégnation de solides lamellaires et dépôt d’un revêtement « dur » sur la roue d’échappement. Grâce au circuit tribologique et par l’intermédiaire de la création d’un débit source initial et d’un débit d’usure faible, une première optimisation de la couche de 3ème corps formée a été intuité. Une meilleure compréhension du contact entre l’ancre et la roue d’échappement a été apportée. Cette compréhension a permis de passer d’une démarche essais / erreurs existante à une démarche scientifique de proposition de solutions pour l’optimisation du triple / Most of mechanical watches are composed of a Swiss lever escapement. This mechanism is located at the end of the gear train and consist in counting and maintaining the oscillations of the balance wheel. It is subject to extreme solicitations, mostly located at the interface anchor / escapement wheel, inducing a low yield of about 35%. Besides, the difficulty of keeping lubricant within the contact can create wear and induce harmful consequences for the system. The first part of this work involved developing an investigation and understanding approach of the contact between the anchor and the escapement wheel through the concepts of Tribological triplet and circuit. A real-time visualization of the contact, through high-speed camera, succeeded in obtaining the evolution of the real speed of contact bodies. At the same time, components’ observations at different operating times resulted in the evaluation of 1st and 3rd bodies’ flows. Furthermore, in order to understand the local tribological behavior of the contact, a dynamic finite element model of the Swiss lever escapement was developed. Following this study, a scenario of the contact life was proposed in order to outline the different phases of the functioning of the escapement. Despite the key role of the 3rd body layer formed during aging by activating the source flow, it generates a wear rate that can be harmful to the watch mechanism. Therefore, it is necessary to formulate and realize an “optimized” third body. In a second part, an optimization of this 3rd body’s behavior was sought in order to reach a 10-years’ reliability and a stabilized wear. To do this, two lubrication technologies of the contact, i.e. fluid and solid, were used. Fluid lubrication has been improved by surface texturing. The power and the number of laser pulses were determined in order to respect the shapes and dimensions of the textures designed for the studied tribological triplet. To overcome the drying up of lubricant along time, the solid lubrication was investigated by impregnation of lamellar solids and deposition of a “hard” coating on the escapement wheel. Thanks to the Tribological circuit and through the creation of an initial source flow and a low wear flow, a first optimization of the 3rd body’s layer formed has been assumed. A better understanding of the contact between the anchor and the escapement wheel has been provide. This understanding made it possible to go from an existing trial / error approach to a scientific approach for the optimization of the Tribological triplet. A stabilization of the wear and an optimized’s third body were obtained by impregnating a MoS2 solid lubricant on the escapement wheel.t. Une stabilisation de l’usure et un troisième corps « optimisé » ont ainsi été obtenus.
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A transmission-error-based gear dynamic model : Applications to single- and multi-mesh transmissions / Modèle dynamique d'engrenages basé sur l'erreur de transmission : Applications à des transmissions simple et multi-étagesSainte-Marie, Nina 09 December 2016 (has links)
Les spectres de bruit mesurés en cabine d’hélicoptère montrent que la boîte de transmission principale (BTP) est un des principaux contributeurs au bruit perçu par les usagers. Elle génère en effet plusieurs raies émergeant fortement du bruit large bande et dont les fréquences se situent dans la plage de sensibilité maximale de l’oreille humaine. Dans un contexte d’amélioration permanente du confort acoustique des usagers, un modèle numérique est développé pour prédire le comportement dynamique des BTP. Les équations du mouvement sont écrites sur la base de fonctions du temps représentatives des excitations générées par l’engrènement (raideur d’engrènement et erreurs de transmission). Plusieurs éléments de validation sont présentés pour confirmer la pertinence de la formulation proposée. Différents résultats numériques et expérimentaux de la littérature sont utilisés à des fins de comparaison, montrant que le modèle s’applique aux systèmes à simple étage de réduction, par engrenage cylindrique ou spiro-conique. La validation est ensuite étendue aux systèmes à deux étages de réduction et les résultats confirment que la formulation basée sur les erreurs de transmission permet de tenir compte des corrections de profil. Finalement, le modèle est utilisé pour diverses applications. Premièrement, l’influence des erreurs de pas sur le comportement dynamique de transmissions par engrenages est discutée, ainsi que l’influence combinée du niveau de chargement appliqué. Dans un second temps, la relation entre l’erreur de transmission dynamique et différents coefficients dynamiques est étudiée. Le contenu spectral de la réponse au niveau des roulements est ensuite analysé pour des systèmes à deux engrènements cylindriques et l’influence de différents paramètres est discutée. Enfin, une application est réalisée sur un système comprenant un engrenage cylindrique et un engrenage spiro-conique. Les phénomènes de couplage entre les étages successifs sont mis en évidence ainsi que la contribution des deux engrènements au contenu spectral de la réponse aux roulements. / Noise measurements have shown that helicopters main gearboxes highly contribute to the overall cabin noise. Gear mesh vibrations propagate through the shafts to the rolling element bearings and the casing which becomes a source of radiated noise. The latter is characterized by high-amplitude tones emerging from broadband noise whose frequencies lie in the range of maximum human ear sensitivity. In the context of continuous improvement in the acoustic comfort of helicopter passengers, it is therefore necessary to analyse and optimize gearbox vibrations in order to reduce casing noise radiations. The research work presented in this memoir is focused on the development of a numerical model dedicated to the prediction of gear system dynamic behaviour, comprising several gear stages and different types of gears. This model relies on classic beam and lumped parameter elements along with specific two-node gear elements for both cylindrical (spur, helical) and spiral-bevel gears. The equations of motion are developed based on time-varying functions representative of mesh excitations which comprise: (a) mesh stiffness functions, (b) quasi-static transmission error under load, and (c) kinematic (or no-load) transmission error. A number of comparisons with benchmark numerical and experimental results from the literature are presented which demonstrate that the proposed approach is sound as far as single-stage systems with spur, helical or spiral-bevel gears are considered. Validations are then extended to double-stage gears and, here again, it is confirmed that the proposed transmission error based formulation is accurate and can account for tooth shape modifications. In the second part of the memoir, several examples of application are presented and commented upon. First, the combined influence of tooth pitch errors and load on the dynamic behaviour of gear transmissions is tackled. An extended three-dimensional model and a reduced torsional version are then confronted in order to investigate the dependency between dynamic transmission errors and mesh force / root stress dynamic factors. Further investigations on bearing dynamic response in two-stage spur gear systems are conducted and the particular contributions of profile modifications are analysed. Finally, a system combining a cylindrical gear and a spiral-bevel gear is considered and particular attention is paid to the dynamic couplings between the various meshes and their influence on bearing dynamic responses.
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Damage mechanism related to plasticity around heterogeneous inclusions under rolling contact loading in hybrid bearings ceramic/steel / Étude des mécanismes d'endommagement liés à la présence d'hétérogénéités dans un contact élasto-plastique, hybride céramique/acierAmuzuga, Kwassi 16 December 2016 (has links)
La durée de vie des pièces mécaniques en contact est fortement affectée par la présence d'hétérogénéités dans le matériau, comme des renforts (fibres, particules), des précipités, des porosités, ou encore des fissures. Des hétérogénéités dures et de formes complexes peuvent créer des surcontraintes locales, initiatrices de fissures par fatigue à proximité de la surface de contact. Une analyse quantitative des surcontraintes créées par les hétérogénéités est nécessaire à la compréhension des mécanismes d'endommagement. Cette étude s'applique à des roulements de ligne d'arbre qui font partie des éléments critiques de moteurs en aéronautique. Elle vise à déterminer précisément la distribution du champ de pression sur l'aire effective de contact et à prédire le profil et l'évolution des champs de contraintes/déformations à chaque passage de la charge sur un volume élémentaire représentatif prenant en compte le gradient de dureté, la présence de carbures et l'existence des contraintes initiales d'origine thermochimique. Une partie de l’étude est consacrée au développement d’un solveur du problème de contact roulant élasto-plastique avec présence d’hétérogénéité par les méthodes semi analytiques assurant un excellent gain en temps et ressources de calculs. Ensuite, un algorithme homogénéisation a été conçu pour analyser le comportement effectif d’un massif élasto-plastique hétérogène sous indentation. Enfin une partie expérimentale est dédiée à la caractérisation microstructurale des aciers étudiés dans le but de déterminer leurs propriétés. Les analyses des résultats de cette étude concourent à soutenir que bien que les inclusions de particules non métalliques soient responsables de la haute résistance de ces matériaux, certaines d’entre elles (celles de longueur dépassant les dizaines de micromètre ou celles qui forment des chaines dans une direction particulière) deviennent, au cours des cycles de fatigue, les principales sources d’endommagement depuis l’échelle locale jusqu’à la rupture globale de la structure. / The lifetime of contacting mechanical parts is strongly affected by the presence of heterogeneities in their materials, such as reinforcements (fibers, particles), precipitates, porosities, or cracks. Hard heterogeneities having complex forms can create local overstress that initiating fatigue cracks near the contact surface. The presence of heterogeneities influences the physical and mechanical properties of the material at microscopic and macroscopic scales. A quantitative analysis of the over-stresses generated by heterogeneities is necessary to the comprehension of the damage mechanisms. The present study is applied to rolling bearings which are the critical elements of the aero-engine's mainshaft. The performance required for these bearings, led SKF Aerospace to introduce a new technology of hybrid bearing with ceramic rolling elements on high-strength steels having experienced a double surface treatment (carburizing followed by nitriding). The study aims to precisely determine the pressure field distribution on the effective contact area and to predict the profile and the evolution of the stress/strain fields at each loading cycle on a representative elementary volume that takes into account the gradient of hardness, the presence of carbides and the existence of an initial compressive stress from thermochemical origin. A major part of this study is devoted to develop a heterogeneous elastic-plastic rolling contact solver, by semi-analytical methods ensuring an excellent saving of calculation time and resources. Thereafter, a homogenization algorithm was built to analyze the effective behavior of a heterogeneous elastic-plastic half-space subjected to an indentation loading. Finally, an experimental part is dedicated to the microstructure characterization of the studied steels with intent to determine their properties. A description of the carbides behavior inside the matrix during micro-tensile tests was carried out under SEM in-situ observation. In the scheme of all analyses conducted in the present work, it can be argued that, although the heterogeneities (such as carbides or nitrides) are responsible for the high resistance of the studied materials, some of them (those whose length exceeds tens of micrometer or those which form stringers in a particular direction) become, over fatigue cycles, the main sources of damage, from their local scale up to the macroscopic failure of the structure.
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Simulation of the contact between a rough surface and a viscoelastic material with friction / Simulation du contact entre une surface rugueuse et un matériau viscoélastique avec frottementBugnicourt, Romain 28 November 2017 (has links)
Les pneus sont un organe déterminant dans la tenue de route des véhicules. Cette thèse porte sur la modélisation du contact entre la bande de roulement d'un pneumatique et une route sèche, afin de comprendre les différents phénomènes physiques mis en jeu ainsi que leurs rôles relatifs dans le frottement. La rugosité multi échelle des sols routiers les rendent difficiles à modéliser avec une simulation par élements finis standard. En utilisant l'hypothèse que la gomme de la bande de roulement est très grande devant la taille des rugosités, elle peut être considérée comme un massif semi-infini. Il est alors possible de résoudre efficacement le problème de contact en ne discrétisant que la surface du massif de gomme. Cette résolution est faite à l'aide d'un algorithme de Gradient Conjugué, au cours duquel les calculs matriciels sont effectués par Transformée de Fourier Rapide (FFT). La viscoélasticité de la gomme est prise en compte en régime transitoire. Les interactions à l'interface entre la gomme et le sol sont modélisés par une loi de frottement ainsi que par une énergie d'adhésion. Les résultats montrent le rôle primordial de la viscoélasticité qui, couplée à la rugosité multi-échelle du sol, modifie la surface du contact au cours des différents étapes de mise en glissement d'un pneumatique, faisant ainsi varier le frottement. / Tires are a key component for the handling and safety of personal vehicles. In this thesis a model of the contact between the tire tread and a dry road is described. It aims at understanding the different physical phenomena taking place in such a contact and their relative role in tire friction. Modeling the multiple scales of road roughness is difficult using a standard Finite Element Method. The hypothesis that the rubber of the tire tread is very large compared to the largest scale of surface roughness is made, so that it can be considered as a semi-infinite half-space. This way, the contact problem can be solved by discretizing the rubber surface only. The solver is a specific Conjugate Gradient iterative method, in which the matrix-vector products are performed with Fast Fourier Transforms. Transient viscoelasticity is accounted for with a step-by-step approach. The algorithm is able to model surface interactions such as Coulomb friction and adhesion. Results show the crucial role played by viscoelasticity. Coupled with the road roughness, it changes the contact surface during the different steps of tire sliding, which in turns impacts friction.
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Uma \'tão pesada cruz\': o governo da Angola portuguesa nos séculos XVI e XVII na perspectiva de Fernão de Sousa (1624-1630) / Its such a heavy cross: the Portuguese Angolas government in the Sixteenth and Seventeenth centuries from the perspective of Fernão de SousaIto, Alec Ichiro 26 August 2016 (has links)
Exercitando um escopo de análise histórico e eclético, a presente dissertação versará sobre o funcionamento de um sistema administrativo misto, arquitetado no formato de nodos interconectados, ou apenas rede, em prol da manutenção de um espaço jurisdicional ultramarino. Nessa empreitada, seremos guiados por duas traves-mestras: a primeira é o interesse nos fenômenos advindos dos contatos intersociais, a segunda é a análise perscrutada da documentação inserida nas Fontes para a história de Angola do século XVII, organizadas por Beatrix Heintze. Problematizando algumas das situações coetâneas pelas quais passavam a expansão portuguesa na África Centro-Ocidental, bem como nos debruçando sobre algumas das indagações levantadas por uma historiografia recente, defenderemos que havia uma série de movimentos ambivalentes e ambíguos no que tangia ao governo do domínio ultramarino da Angola portuguesa. Sucintamente, chamaremos atenção para a importância dos procedimentos e resoluções políticoadministrativas adotados naquele domínio, analisando as maneiras de arregimentação e condução de uma máquina de guerra portuguesa, destacando a importância da participação política de atores e sujeitos centro-africanos nos rumos políticos das chamadas conquistas e abordando as relações institucionais e econômicas entre Luanda e os entrepostos portugueses instalados no interior. Por excelência, as hierarquias internas e os contatos sociais e políticos luso-africanos foram gestados em um ambiente conflituoso, entrecortado por tensões sociais, atritos institucionais e embates políticos. Em ultima instância, concluiremos que ocorriam justaposições e aglutinações entre as formas de dominação e intermediação que faziam parte do funcionamento político e institucional da Angola portuguesa, contanto que duas precondições fossem atendidas: o engrandecimento da exploração economia através do tráfico transatlântico e a penetração institucional e política do continente. / Considering an eclectic and historical scope of analysis, this dissertation will argue about the execution of a mixed administrative system, based on institutional nodes interconnected in a form of network system, operated on the behalf of an overseas jurisdictional space. Our efforts will be engaged with two mainstreams: the first is our interest in the phenomena related with some inter-social contacts, the second is the analytical research of the Fontes para a história de Angola do século XVIIs documentation, organized by Beatrix Heintze. Casting some questions related to the different situations concerned with the Portuguese Expansion in the West Central Africa, as well as reflecting some inquiries posed by the recent historiography, here we stand for a settle of ambivalent and ambiguous series of movements emerged from the Portuguese Angolas overseas domain, calling up for the importance of some political and institutional forms of proceedings. They were all managed in order to resolve some issues related with the Portuguese Angola, paying attention to the recruitment and mobilizations of the Portuguese war machine, elucidating how the local political actors interacted with the conquistas and how was carried out the institutional and economical relations between Luanda and the interior entrepôts. All the internal hierarchies and luso-african contacts was settled down in a conflictive environment, crossed through social tensions, institutional frictions and political shocks. Finally, we conclude that some forms of domination and intermediation in the Portuguese Angola were sustained by a correlation between juxtapositions and agglutinations, but only if two demands were attended: the enlargement of the economical exploitation through the transatlantic slave trade and the institutional and political penetration of the African continent.
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