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1
Mathisen, Sindre. "Design criteria for offshore feed barges." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18480.
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The fish farming industry faces some problems for the future as the escaping of fish and fish lice. One solution to these problems could be to move the farms further offshore. The main focus of the industry is on the cages the fish is held in, but the feed barge is the brain of a fish farm. Before offshore fish farming is an acceptable solution for the future the design criteria for the feed barge has to be sufficient for more exposed areas.Some regulations both for fish farming and the oil industry have been evaluated. The conclusion from the evaluation of the regulations is that the regulation for floating fish farms is the least strict regulation. The purpose of this report is to enlighten the need for new thinking for design criteria for offshore feed barges by doing a hydrodynamic analysis in HydroD by using WADAM and potential theory applied to a panel model. The computer program is a recognized program developed by DNV. The model in this report is a design which is believed to be the best design for exposed areas. The model is analyzed in both hydrostatic and hydrodynamic conditions. The hydrostatic analyses conclude that the barge is stable and valid for operation in Norwegian waters. For the hydrodynamic analysis it as assumed two different locations with different wave data to enlighten the need to design a barge to a specific location. There is also assumed extra restoring as simulation of mooring. The result from the hydrodynamic analyses is used to evaluate the required freeboard for each location and the motions and accelerations of the barge. The results show that the barge in both locations will experience water on deck already for significant wave height of 2 meters, which actually is low even for the regulations today. The rotation and acceleration results are compared against limits for human tolerance and they show that there is a need for evaluating this in the design criteria.The conclusion is that the regulation valid today for fish farming is insufficient for offshore fish farming and that it is possible to look towards the offshore industry for leads on how the regulations should be formed. For the future it would be appropriate to change the design criteria and design of the feed barge if the fish farming is to be moved further offshore.
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Brunes, Sebastian. "Apartment Barges : Aa Comfort and Safety Analysis." Thesis, KTH, Aeronautical and Vehicle Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11035.
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This report presents the results of a study of the comfort and safety concerning apartment barges. The most common discomforts are due to vertical and lateral accelerations and high roll angles which are thorough described. A rough risk analysis for apartment barges is performed. If a certain risk is high and it is impossible to eliminate or reduce the probabilities of occurrence, precautions to minimise the consequences are described. The iterative planning process described briefly below is used on the two example projects: Bällstaviken and Pampas Marina.
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Douma, A. M. "Aligning the operations of barges and terminals through distributed planning." Enschede : University of Twente [Host], 2008. http://doc.utwente.nl/60220.
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Tramoni, Marie-Pierre. "Etude expérimentale et théorique du roulis des barges a la résonance." Nantes, 1992. http://www.theses.fr/1992NANT2060.
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Une étude théorique et expérimentale du mouvement des barges utilisées en offshore pétrolier a été réalisée. La défaillance de la théorie potentielle linéarisée pour le calcul du mouvement de roulis de ces bateaux a été imputée à l'émission de tourbillons et a la non-linéarité des efforts excitateurs. Dans le but d'évaluer la part respective prise au mouvement par ces deux effets, une analyse expérimentale et une étude numérique ont été réalisées. Les deux campagnes d'essais en canal à houle ont permis d'étudier l'influence des paramètres géométriques sur le mouvement. Les simulations numériques ont été destinées à tester l'impact de la modélisation des phénomènes non-linéaires sur le calcul des mouvements
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JUNIOR, MAURO AUGUSTO MARTINS. "RISK-BASED MAINTENANCE AND INSPECTION APPLIED TO OFFSHORE SERVICE BARGES: PROPOSITION OF A METHOD FOR DECISION-MAKING." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=22103@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROA Manutenção e Inspeção Baseada em Risco (IBR) compreende a utilização de ferramentas de cálculo de engenharia como análise estrutural por elementos finitos, análise de corrosão e fadiga, análise de risco e confiabilidade estrutural, de forma integrada, a fim de elaborar os planos de inspeção de maneira racional otimizada. No caso de inspeção de balsas para serviço offshore, particularmente da estrutura do convés principal da balsa, técnicas de análise de risco podem ser aplicadas para que se possam determinar os intervalos de inspeção de cada elemento da estrutura. Como resultado final, tem-se um plano de inspeção otimizado e aplicado à realidade estrutural da unidade. A presente dissertação tem por objetivo propor um método de predição baseado em IBR para aperfeiçoamento de processos de tomada de decisão referentes à manutenção de balsas para serviço offshore de uma grande empresa brasileira do setor de petróleo e gás natural. Apresenta-se um estudo de caso focalizando uma aplicação do método de predição em uma das balsas de serviço offshore da empresa – a Balsa de Serviço 3 (BS-3). Os resultados do estudo de caso permitem afirmar que a adoção de ferramentas de inspeção baseada em risco podem aumentar o TLV (Tempo Limite de Vida) das balsas de serviço offshore. Como consequência, os benefícios potenciais são: redução das incertezas associadas; identificação de avarias devido à deterioração estrutural; redução de custos de manutenção; e, principalmente, diminuição do tempo da paralisação das balsas de serviço.
Risk-Based Inspection (RBI) involves the use of engineering calculation tools such as finite element structural analysis, corrosion and fatigue analysis, risk analysis and structural reliability in an integrated framework, in order to develop inspection plans in a rational and optimized manner. RBI attempts to map the structure degradation curve, in deterministic or probabilistic way. Once defined the degradation curve for the different areas of the structure, risk analysis techniques are applied to determine inspection intervals concerning each element of the structure. As final result, it is possible to obtain an optimized inspection plan applied to the structural reality of the unit. The objective of this dissertation is to propose a prediction method, based on RBI, to improve the decision-making process focusing on maintenance of offshore service barges of a large oil and gas company in Brazil. It presents a case study concerning an application of this prediction method in one of the offshore service barges of this company – Offshore Service Barge 3 (BS-3). The results show that the adoption of preventive inspections can enlarge the TLV (Time Limit of Life) of this type of unit. As a consequence, the potential benefits are: reduction of uncertainties; identification of faults due to structural deterioration; maintenance costs reduction; and, decreasing of time breakdowns concerning barge services.
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Twine, Karen Gemma. "Conservation of barbel (Barbus barbus) in the River Great Ouse." Thesis, University of Hull, 2013. http://hydra.hull.ac.uk/resources/hull:8222.
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There have been growing fears relating to the distribution and a perceived lack in natural recruitment of barbel in European rivers. This project reviewed existing literature, examined the suitability of Environment Agency data to assess barbel populations and designed investigations to identify possible bottlenecks in recruitment focusing on all life history stages and environmental influences, with the intention of developing a practical management plan for the River Great Ouse fishery that can be applied to other rivers. This study examined seasonal movements of 20 wild barbel via radio telemetry in a nine kilometre river stretch on the upper Great Ouse, recording weekly movements over an 18 month period. The project aimed to ascertain the effects of environmental influences on movement and habitat use. Radio tracking over 100 consecutive days throughout the spring periods in 2010 and 2011 gave an understanding of their daily movements, identified barriers limiting longitudinal movements and located active spawning gravels. Health of spawning gravels was assessed by monitoring changes in diatom growth and hyporheic water quality during the embryonic development stage. Representative freeze core samples from spawning gravels were used to assess fine sediment infiltration. Larval drift measured the number of larvae leaving the spawning grounds, a range of methodologies were used to capture 0+ to 3+ barbel. Habitat and feeding preferences were then evaluated. It was found that temperature and flow impacted movement, individuals moved through the entire river stretch, despite the presence of a weir that was previously thought of as impassable. Variations in sediment loading were found between spawning habitats, but fine sediment and organic matter were improved with gravel jetting. Larval drift and electric fishing were found to be the most effective methods for catching young barbel, but the necessary habitats to support these young fish were not readily available within the study stretch.
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Gutmann, Roberts Catherine. "Population ecology and behaviour of European barbel Barbus barbus, a recreationally important, translocated fish." Thesis, Bournemouth University, 2018. http://eprints.bournemouth.ac.uk/30876/.
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The intentional introduction of fish species into new environments for enhancing recreational angling is common. The intentional translocation of European barbel Barbus barbus into the middle River Severn in 1956 resulted in their establishment and dispersal throughout the catchment, including its tributary, the River Teme, where they supported high catch rates until the mid-2000s. Anecdotal evidence suggests that since then, there have been large declines in catch rates in the Teme and thus in the size of the adult population. However, data to evidence this were lacking, with minimal ecological data available. The aim of this research was to thus generate new knowledge on the ecology of this invasive B. barbus population in the River Teme to provide baseline information that could be used as a basis for fishery and river management. The focus of the research was initially on understanding the reproduction of B. barbus in the river, with focus on the quality of the spawning substrate and the temporal and spatial production of 0+ fish in the river via their reproduction. This was followed by investigating the B. barbus trophic relationships with other cyprinid species, and in relation to angling. In addition, the tracking of B. barbus in the lower river provided insights into the behaviours of individual fish. The majority of the spawning gravels analysed in the River Teme had generally low fine sediment content and organic matter compared to other lowland rivers, with this potentially important for B. barbus larval emergence and survival. The spawning of B. barbus involves construction of a nest (‘redd’) that results in large volumes of sediments being moved and thus they can have a zoo-geomorphic impact on sediments. Spawning in the Teme B. barbus population utilised a protracted spawning strategy, as per their native range, with this strategy also utilised by chub Squalius cephalus and minnow Phoxinus phoxinus. These results suggest some consistency with the pre-adaptation hypothesis, whereby the non-indigenous B. barbus utilised traits in the new range that it utilises in their indigenous range, providing considerable advantages for invasion success. Investigations into the trophic interactions of the B. barbus with other fishes revealed that, in general, there were consistent patterns of partitioning in their trophic and isotopic niches, with little evidence to suggest high inter-specific competitive interactions. Stomach contents analyses revealed that whilst the 0+ fishes were all primarily generalist in their diet, B. barbus was the most specialist out of the four analysed fishes, with the trophic niche of invasive B. barbus being highly dissimilar to S. cephalus and dace Leuciscus leuciscus. Stable isotope studies then suggested these patterns of inter-specific niche partitioning remained through the life of these fishes, but with some dietary convergence when larger fishes (generally > 400 mm) had diets composed of high proportions of angler bait based on marine fishmeal. Acoustic tagging of B. barbus in the lower river tracked their movements over a 12 month period and revealed that two weirs provided substantial impediments to their movements. There were also considerable differences between the size of the home ranges of individuals, but with this explained more by their method of capture (angling versus electric fishing) than any other variable, suggesting inherent differences in the behaviour of individuals that affect their vulnerability to angler capture. These results thus provide considerable new knowledge on this invasive B. barbus population that can be utilised to better manage populations both in the River Teme and elsewhere in their range. They revealed considerable differences in the behavioural ecology of individuals, but with their invasive population generally having minimal impact on other fishes in the river.
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Basic, Tea. "Applied ecology and management of a European barbel Barbus barbus population of a lowland river." Thesis, Bournemouth University, 2017. http://eprints.bournemouth.ac.uk/27994/.
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Freshwaters represent some of the most degraded ecosystems in the world, with approximately 56% of the European rivers being sufficiently altered by human activities to modify the composition of their biological communities. River fish communities are often used to indicate this altered status due to their ecological, recreational and economic value. In lowland rivers, habitat alterations include impoundments and activities such as channel straightening, impacting aspects of fish behaviour and lifecycle completion. Species such as European barbel B. barbus are particularly affected due to their propensity for long-distance migrations and requirements of high quality gravels for spawning. Consequently, B. barbus populations throughout Europe are increasingly threatened. Barbus barbus is indigenous to eastern flowing rivers in England, including the River Great Ouse that has been historically subjected to multiple alterations in channel morphology for flood defence and impoundments for land drainage. The river’s B. barbus population is now restricted to the upper reaches where they represent a key resource for angling, yet temporal and spatial data on their populations suggest relatively low abundances in recent years. Over the last 30 years, the regulatory authority responsible for their management (Environment Agency) have managed the population through a combination of enhancement stocking using hatchery-reared fish and habitat improvement schemes, especially gravel jetting of spawning substrates. There is, however, little knowledge on the effectiveness of these. Consequently, this research investigates B. barbus in rivers in England generally and the Great Ouse specifically by assessing the efficacy of stocking and habitat works to enhance populations. The initial research has focused on using scales from historical surveys on the fish communities of three rivers (including the Great Ouse) to determine the trophic relationships of the fishes using stable isotope analysis. Outputs indicated that scales can be used for this analysis and revealed that rather than sharing food resources with functionally similar species such as chub Squalius cephalus, B. barbus occupied distinct isotopic (trophic) space. Their diet was then assessed using stable isotope analysis on B. barbus scales from four English rivers to determine their major food resources. Results indicated that angling heavily modified B. barbus diet, with introduced bait (as pelletized fishmeal) being the most important dietary component. The next phase of the research built of these outputs of both these studies and assessed the impact and efficacy of enhancement stocking of hatchery-reared B. barbus. In both semi-controlled and wild conditions, analyses suggested that enhancement stocking with B. barbus has minimal detrimental consequences for other fishes such as S. cephalus, with strong patterns of trophic niche partitioning. Nevertheless, the efficacy of enhancement stocking might be limited, with low numbers of recaptured stocked B. barbus recorded in the study, with a concomitant genetic study revealing negligible introgression of stocked B. barbus genes into the population, despite the stocking activities. Given that enhancement stocking has been of limited success to improve B. barbus population abundance in the Great Ouse catchment, their spawning habitats were assessed in the river, including whether the physicochemical properties of the sediments and hyporhic water were limiting. Whilst results indicated good quality of hyporehic water, the subsurface sediment was high in fine content, particularly sand. Gravel jetting, a method to clear spawning gravels of fine content, was shown to only provide short term benefits (e.g. 3 months) in reducing this content of fines, with this benefit only apparent in surface sediments and not in the subsurface. An ex-situ experiment to assess the tolerance of B. barbus eggs and larvae to sand content in spawning substrata indicated no effect of high sand content on egg to emergence survival rates, but it did significantly decrease the timing of larval emergence from gravels. This early emergence of B. barbus larvae from substrates with high sand content could potentially impact their subsequent survival in the wild. Thus, the current management strategies employed in the River Great Ouse to enhance the B. barbus populations appear to have limited success, largely failing to meet their objectives. Thus, more holistic management approaches are outlined and suggested for implementation.
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Decamp, Eleanor Sian. "Performing barbers, surgeons and barber-surgeons in early modern English literature." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:42cdcea1-56b8-4d3d-961f-d2a3e7fa0d13.
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This study addresses the problem critics have faced in identifying contemporary perceptions of the barber, surgeon and barber-surgeon in early modernity by examining the literature, predominantly the drama, from the period. The name ‘barber-surgeon’ is not given formally to any character in extant early modern plays; only within the dialogue or during stage business is a character labelled the barber-surgeon. Barbers and surgeons are simultaneously separate and doubled-up characters. The differences and cross-pollinations between their practices play out across the literature and tell us not just about their cultural, civic and occupational histories but also about how we interpret patterns in language, onomastics, dramaturgy, materiality, acoustics and semiology. Accordingly, the argument in this study is structured thematically and focuses on the elements of performance, moving from discussions of names to discussions of settings and props, disguises, stage directions and semiotics, and from sound effects and music, to voices and rhetorical turns. In doing so, it questions what it means in early modernity to have a developed literary identity, or be deprived of one. The barber-surgeon is a trope in early modern literature because he has a tangible social impact and an historical meaning derived from his barbery and surgery roots, and consequently a richly allusive idiom which exerted attraction for audiences. But the figure of the barber-surgeon can also be a trope in investigating how representation works. An aesthetic of doubleness, which this study finds to be diversely constructed, prevails in barbers’, surgeons’ and barber-surgeons’ literary conception, and the barber-surgeon in the popular imagination is created from opposing cultural stereotypes. The literature from the period demonstrates why a guild union of barbers and surgeons was never harmonious: they are opposing dramaturgical as well as medical figures. This study has a wide-ranging literary corpus, including early modern play texts, ballads, pamphlets, guild records, dictionaries, inventories, medical treatises and archaeological material, and contributes to the critical endeavours of the medical humanities, cultural materialists, theatre historians and linguists.
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Padovezi, Carlos Daher. "Conceito de embarcações adaptadas à via aplicado à navegação fluvial no Brasil." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-26112003-154811/.
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É elaborada uma proposta de procedimentos de projetos de comboios fluviais adaptados às condições existentes das vias navegáveis, a partir de uma visão ampliada da necessidade de obtenção de menores custos de transporte, com níveis adequados de segurança e de respeito ao meio ambiente. Uma análise das inter-relações técnicas entre hidrovias e embarcações, assim como dos condicionantes e implicações do conceito de embarcações adaptadas às vias navegáveis, orientou a elaboração do modelo. Este foi estruturado em módulos, com o objetivo de reproduzir, um a um, os fatores mais importantes que influenciam a eficiência, a segurança e o nível de interferência ambiental do transporte de cargas por comboios. Um programa computacional foi desenvolvido como instrumento de aplicação do modelo, consolidando os procedimentos propostos para a escolha das melhores alternativas de projeto e de operação de comboios. Resultados experimentais com comboios em escala real e com modelos em tanques de provas, foram utilizados para validação dos procedimentos adotados. Dados de acidentes com comboios em várias hidrovias do mundo foram utilizados como bases para avaliações de risco. O modelo foi aplicado aos casos de transportes de soja pela hidrovia Tietê-Paraná e pelo rio Araguaia, exemplificando as formas de análise e de escolha das alternativas de soluções de projeto. Ao final, os resultados obtidos comprovaram a utilidade da adoção de um enfoque mais abrangente do processo de projeto de comboios fluviais.It is proposed a procedure model for design of barges push-tow adapted to waterway actual conditions, with the purpose of minimize transportation costs but always making verifications of navigation safety and ambient interferences levels. An analysis of inter-relations on inland waterways and cargo ships and, also, detailed conditionings and implications of waterway adapted ships concept, was used for model elaboration. It was structured in blocks to reproduce, one to one, the most important factors that modify efficiency, safety and environmental interference levels of barges push-tow cargo transportation. A computational program was developed to consolidate the proposed model and to apply procedures to choose best design and operational alternatives. Results of full scale and towing tank tests with push-tows were used to verify the mathematical and semi-empirical models. Barges push-tows accidents data from waterways of the world was used as risk model basis. To evaluate its effectiveness, the model was applied to bulk grain transportation cases by Tietê-Paraná waterway and by Araguaia river. The results shows that the special emphasis on three factors (efficiency, safety and ambient) improves the quality of barges push-tow design process.
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Larue, Bruno. "Déversement élastique des barres maintenues latéralement." Nancy 1, 2005. http://docnum.univ-lorraine.fr/public/SCD_T_2005_0185_LARUE.pdf.
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Ce travail s'articule autour de trois axes. Le premier à caractère fondamental concerne le développement d'une base théorique pour l'étude du déversement des profils maintenus latéralement en translation et en rotation. Le deuxième concerne la détermination de l'expression analytique du moment critique de déversement. Plusieurs calculs ont été menés en parallèle avec deux logiciels dont les principes de recherche de l'état critique sont complètement différents. L'un, développé dans le cadre de ce travail, utilise la résolution numérique du système d'équations différentielles. L'autre, nommé LTBEAM et développé au C. T. I. C. M. , est basé sur la méthode des éléments finis. Les écarts entre deux résultats numériques sont toujours restés inférieurs à 1 %. Le troisième axe plus pragmatique concerne la proposition d'une méthode alternative basée sur l'étude du flambement autour d'un axe imposé d'une section équivalentThis work is articulated around three axes. The first relates to the development of a new consistent theory of the lateral buckling of the profiles restrained laterally in translation and rotation. The second relates to the determination of the analytical expression of the critical buckling moment. Several calculations were carried out in parallel with two software whose princip les of research of the critical state are completely different. One, developed in this work, uses the numerical resolution of the system of differential equations. The other, named LTBEAM and developed by the C. T. I. C. M. , is based on the finite element method. The differences between two numerical results always remained lower than 1 %. The third more pragmatic relates to the proposaI of an alternative method based on the study of buckling around an enforced axis of an equivalent section continuously restrained at one flange
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Youssefzadeh, Ameneh. "Les bardes bakhsi du khorassan iranien." Paris 10, 1997. http://www.theses.fr/1997PA100111.
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La recherche presente la tradition des bardes bakhshi du nord du khorassan, region dont l'histoire explique pour une bonne part la richesse culturelle. Le personnage le plus representatif de la vie musicale y est le bakhshi, barde descendant d'une lignee de chanteurs/narrateurs que l'on retrouve dans toute l'asie centrale ou il assumait deux roles : dans l'un, chaman guerisseur ; dans l'autre, barde accompagne d'un dotar (luth a long manche a deux cordes). Rencontre au khorassan, ce dernier est a meme de chanter en trois langues : persan, turc et kurde. La presence du bakhshi est fort ancienne. Musicien professionnel attache jadis a la cour des rois ou des potentats locaux, il se produit aussi (et aujourd'hui encore) lors de rejouissances villageoises ou un grand respect l'entoure pour son art, sa science et sa grande memoire. Dans son repertoire figure principalement de longs poemes narratifs, appeles dastan (litteralement : recit), a caractere epique ou romantique ou alternent passages en prose et chansons en vers. La litterature persane classique, en tant que modele, y a exerce une notable influence. Le repertoire du bakhshi compte egalement des quatrains populaires et des poemes de poetes locaux (tels ja'far qoli, poete kurde du xixe siecle). Une analyse musicale du corpus recueilli sur le terrain permet de degager les regles generales de cette musique qui, par exemple, recourt a des melodies types. Est enfin fournie une description de la situation de la musique en iran apres la revolution islamique, detaillant l'influence qu'elle exerce sur la pratique des bardes qui, apres de difficiles annees de censure islamique, commencent a recevoir un debut de reconnaissance officielle, meme si celle-ci sert aussi des buts politiques et nationalistesThis research deals with the tradition of the bakhshi bards of northern khorasan, a region with a rich cultural background largely explained by its history. The most representative figure of its musical life is the bakhshi, a bard descended from a line of singers/narrators also found all over central asia, where they assumed two functions : that of the shaman healer, and that of the bard accompanied by the dotar (a long-necked luth with two strings). The latter are to be found in khorasan, where most of them can sing in three languages : persian, turkish and kurdish. The bakhshi is of a very ancient background. A professional musician formerly attached to the court of kings or local potentates, he also performs (even today) at village feasts, where he is highly respected for his art, his knowledge and his good memory. His repertoire mainly includes long narrative poems called dastan (literally : stories). They are epic or romantic and have alternate prose passages and songs in verse. Their models can be traced back to classical persian literature, which influenced them to a great extent. The repertoir of the bakhshi also contains popular quatrains and poems by local poets (such as ja'far qoli, a 19th century kurdish poet. A musical analysis of the locally collected corpus reveals the general rules of this music which, for exemple, uses melodic types. There follows a description of the situation of music in iran after the islamic revolution, showing the influence the latter exercised on the bards. After some difficult years of islamic censorship, they are beginning to enjoy official recognition, although this also serves political and nationalistic purposes
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Karlsen, Stefan Hjønnevåg. "Barge transportation of heavy objects." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11575.
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The topic for this master thesis is transportation of heavy platform modules on barges. The goal is to find the short-term extreme accelerations, or design accelerations, that are limiting for the feasibility of the transportation operation. Motion response analyses have been performed for six different combinations of barges and module weights as follows: Barge Module300 feet 1000 tonnes 300 feet 3000 tonnes 400 feet 1000 tonnes 400 feet 5000 tonnes 600 feet 5000 tonnes 600 feet 8000 tonnes It has been observed that the roll acceleration is overestimated in non-viscous motion analyses of barge type vessels. Thus for the first case an additional analysis including viscous roll damping has been performed. The software used to perform the analyses and the theory used has been reviewed. The following programs are described: Genie – modelling of the barge (hull, ballast tanks) HydroD (WADAM) – modelling of environment, hydrodynamic analysis by source technique Postresp – combination and printing of motion characteristics Matlab – statistical postprocessing, calculation of design accelerations The founding theories are linear potential wave theory and source technique. The viscous roll damping, which in reality is non-linear, was estimated in a linearised form using strip theory and empirical data. Based on the calculated motion characteristics, the design accelerations are estimated by short-term statistics, meaning the extreme accelerations are estimated in 3 hour seastates. This was performed for four different significant wave heights and all relevant wave periods. The accelerations are calculated in the system centre of gravity, module centre of gravity and top and bottom corners of the module. The limiting criterion of a barge transportation is normally the forces the seafastening can withstand, thus the acceleration on the seafastening has been examined closer. Aker Solutions have roughly defined the seafastening capacity by setting absolute limits for the accelerations in the longitudinal, transverse and vertical direction. Compared to the criteria for accelerations given by Aker Solutions, the results proved that the acceleration in the transverse direction is the limiting factor. Beam seas close to the roll eigenperiod gave the highest accelerations on the seafastening both in the transverse and vertical direction, suggesting that these accelerations are governed by the roll motion. When viscous roll damping was included, there was a significant reduction in the transverse acceleration, and a slightly smaller reduction in the vertical acceleration on the seafastening compared to the non-viscous case. However, the transverse acceleration was still the most critical with respect to the given criteria. There was little or no effect of viscous roll damping on longitudinal design accelerations. Design accelerations for a 1000 tonne module were found for two different barges, a 300 feet barge and a 400 feet barge. The accelerations proved significantly smaller on the 400 feet barge, especially in the transverse direction. A 5000 tonne module was also tested on two different barges, a 400 feet barge and a 600 feet barge. As in the preceding comparison, the accelerations were significantly larger on the smaller barge. Thus, for a given load, switching to a larger barge can give a large reduction in the acceleration. There are indications that the results achieved are conservative, including the case with viscous roll damping. However, this is only an indication. The viscous roll damping is difficult to estimate correctly and therefore a suggestion could be to investigate the validity of the viscous roll damping model through model tests. A certain reduction in the roll acceleration was observed when the load was increased for the 300 feet barge, without giving an increase in the roll angle extremes. This indicates that for some cases a decrease in the metacentric height can, provided that the stability is sufficient, contribute to a decrease in the roll acceleration without increasing the extreme roll angle. In high sea states, non-linear effects can become significant. The resulting effect on roll acceleration is unknown. Hence, it could be advantageous to investigate the extent of these effects using a non-linear calculation model.
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Guichon, Jean-Michel. "Modélisation, caractérisation, dimensionnement de jeux de barres." Phd thesis, Grenoble INPG, 2001. http://tel.archives-ouvertes.fr/tel-00599651.
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La conception de jeux de barres nécessite le développement de modèles et d'outils informatiques spécifiques à ce domaine du génie électrique afin d'être compatible avec les méthodes de dimensionnement existantes. Les principales grandeurs utiles lors d'une conception sont : les courants circulant dans chaque conducteur ainsi que les grandeurs directement liées aux courants telle que la puissance dissipée sous forme de pertes joules. Les autres grandeurs recherchées découlent de la connaissance du courant: l'induction magnétiques et les efforts éîectrodynamiques. Dans un premier temps une approche qualifiable de conventionnelle est menée afin d'obtenir des modèles pouvant être utilisés dans des environnements de dimensionnement. Cette approche permet de présenter les difficultés matérielles ou théoriques rencontrées avec ces méthodes. Dans un second temps l'approche proposée afin d'évaluer le courant électrique est présentée et validée à l'aide d'une maquette et de simulations éléments finis. Lorsque le courant est connu, il est possible de mettre en place les méthodes de calcul permettant d'évaluer l'induction magnétique ainsi que les efforts éîectrodynamiques, puis de valider ces calculs à l'aide de simulation éléments finis. Finalement la méthodologie d'optimisation est présentée et deux optimisations sur des cas réels sont présentées.
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Golomb, Liorah Anne. "Peter Barnes and the nature of authority." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0013/NQ35163.pdf.
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Maas, Korey D. "Robert Barnes (1495-1540) as historical theologian." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422474.
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Kirscher, Marie-Agnès. "Maurice barres. Ecriture et creation de soi." Lille 3, 1992. http://www.theses.fr/1992LIL30012.
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Barres a toujours affirme que son oeuvre, d'une seule venue, procedait toute des fictions reunies sous le titre de culte du moi, dont l'ecriture avait decide de sa vie. Or, deroutee par ces ecrits precoces, la critique a pris le parti d'en diffuser une lecon reductrice ou elle s'est resignee a les tenir pour indechiffrables. Soumis a une interrogation patiente, informee par les methodes d'analyse textuelle recentes, ils s'ouvrent a l'interpretation et revelent en effet le sens de l'oeuvre et du destin. Une causalite psychique personnelle que la psychanalyse permet d'elucider, unie a l'epreuve du nihilisme radical, etablissent barres dans un site philosophique proche de celui de nietzsche, evide de toute transcendance et de toute imposition universelle, ouvert a la question ontologique. La logique de la philosophie d'e. Weil eclaire son geste decisif. Barres mise son salut, a la faveur de l'ecriture, sur la "libre creation de soi" de la personnalite, et s'emploie a etendre a la communaute les benevides de sa methode de gestion de ses conflits intimes. Comment l'ecriture, concue comme pratique poetique et auto-poetique, instruit l'accomplissement personnel de barres dans la sphere de la vie privee et celle des activites sociales et politiques, comment aussi la creation esthetique supplee a l'inaccomplissement attenant a la finitude humaine dont il a un sentiment aigu; comment, non sans defaillances, mais avec perseverance, barres s'achemine vers une sagesse tragique, dechiree, reconciliee et conciliatrice, et s'eleve a "l'amour" du poete, en charge du "regne de la terre" (heidegger) et de la parole qui en recueille en beaute l'eclosion, tel est l'objet de cette etudeBarres always maintained that his work, inspired by one single surge, entirely originated from the works of fiction gathered under the title le culte du moi, the writing of which had determined his life. Now, put off by these early writings, critics have resolved to spread a reducing interpretation of them, or they have resigned themselves to considering them to be unintelligible. Subjected to a patient scruting, enlightened by the recent methods of textual analysis, they let themselves be interpreted and in fact, disclose the meaning of his work and destiny. A personal psychic causality which psychoanalysis enables one to elucidate, along with the test of radical nihilism, place barres in a philosophical sphere close to nietzsche's, devoid of all transcendancy and of all universal pressure, open to the ontological search. The logique de la philosophie by e. Weil sheds light on his decisive stance. Barres stakes his salvation by the help of writing, on the "free creation of self" of the personnalite, and devotes his energy extending to the community the benefits of his method of managing his internal conflicts. How writing, conceived as a poetic and self-creating practice, commands barres's personal achievements in the field of private life and in that of social and political activities, how aesthetic creation compensates for the non-fulfilment inherent in human finitude-of which he is acutely aware; how, in spite of failures, but perseveringly, barres progresses towards a tragic, torn, reconciled and reconciling wisdom, and rises to the "love" of the "poet", in charge of the "kingdom of the earth" (heidegger) and of the work that reaps its blossoming in beauty, such is the purpose of this study
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Wexler, Thomas. "Collective Expressions: The Barnes Foundation and Philadelphia." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1383558977.
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Linttell, Anne E. Carleton University Dissertation English. "Darkness in the work of Djuna Barnes." Ottawa, 1994.
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Bénard, Pierre. "Le tour d esprit de maurice barres." Paris 4, 1987. http://www.theses.fr/1987PA040173.
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La facon de penser de maurice barres montre l'empreinte d'une ecrivain qui n'a pas cesse, quoi qu'il eut dit, d'interroger le toute l'oeuvre de barres, celui de chercher dans le silence et la vie, bref, le secret d'une destinee. La conception monistique, l'illuminisme, la reverie s'unissent dans une synthese etrange, d'ou procede le "tour d'esprit" d'un penseur constamment porte a sur voiles, que sont les autres et les choses - des lueurs d'un mystere aux "fatalites" de notre constitution psychique, n'empruntera pas les voies d'une "dialectique" jugee presomptueuse et sterile. .Maurice barres's thinking shows the combined influences of psycho cism; for barres never really ceased - whatever he said about it him- self - questioning germanic genius. The descent into "mothers"' king- barres's main concern, as shown in all his writings, was always
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Mignot, Ludovic. "Des Codes barres pour les langages rationnels." Phd thesis, Rouen, 2010. http://www.theses.fr/2010ROUES038.
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Les expressions rationnelles et les automates finis sont des objets mathématiques permettant de représenter les langages rationnels. Le lien enttre ces structures est le sujet de nombreux thèmes de recherche. Chacun de ces modèles présente avantages et inconvénients. Nous nous proposons d'établir de nouveaux opérateurs, les multi-tildes-barres, permettant de créer un modèle d'expression rationnelle simple, utilisant l'union, la concaténation et l'étoile de Kleene. Les multi-tildes-barres sont basées sur des opérations relativement simples sur les langages, l'ajout et l'élimination du mot vide. Nous étendons les méthodes de conversion classiques entre expressions rationnelles simples et automates finis aux expressions utilisant ces nouveaux opérateurs. Nous montrons également que le pouvoir de factorisation de ces nouvelles expressions est exponentiellement plus grand que celui des expressions rationnelles simples.
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Mignot, Ludovic. "Des Codes Barres pour les Langages Rationnels." Phd thesis, Université de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00794580.
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Les expressions rationnelles et les automates finis sont des objets mathématiques permettant de représenter les langages rationnels. Le lien entre ces structures est le sujet de nombreux thèmes de recherche. Chacun de ces modèles présentent avantages et inconvénients. Nous nous proposons d'établir de nouveaux opérateurs, les multi-tildes-barres, permettant de créer un modèle d'expression se situant entre la structure d'automate et celle d'expression rationnelle simple, utilisant l'union, la concaténation, et l'étoile de Kleene. Les multi-tildes-barres sont basées sur des opérations relativement simples sur les langages, l'ajout et l'élimination du mot vide. Nous étendons les méthodes de conversion classiques entre expressions rationnelles simples et automates finis aux expressions utilisant ces nouveaux opérateurs. Nous montrons également que le pouvoir de factorisation de ces nouvelles expressions est exponentiellement plus grand que celui des expressions rationnelles simples.
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Gutierrez, Casaverde Ana Isabel, Chávez Luis Enrique Ramírez, Vilogrón Shirley Kay Shibata, Gamarra Jhossellin Guiliana Valenzuela, and Raya José Andrés Vásquez. "Barber Truck." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653206.
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El objetivo del proyecto es implementar un Barber truck, a través del cual se satisfaga de manera distinta el creciente mercado de la belleza y cosmética masculina. Si bien, el rubro de la barbería es competitivo, los competidores prestan servicios que no difieren mucho entre sí. Por ello, el proyecto busca implementar una barbería rodante de nivel superior, donde la principal tarea será trabajar al detalle con cada cliente. El servicio de barbería móvil “Barber Truck Lima” está enfocado al público masculino entre los 18 y 39 años de los distritos de Independencia, Los Olivos y San Martín de Porres, en los sectores socioeconómicos A, B y C. Teniendo en cuenta la necesidad encontrada, el servicio de una barbería móvil pretende ser una ayuda para aquellos caballeros que cuidan su imagen personal y desean organizar mejor su tiempo en relación con el servicio de corte de cabello y barbería. Por ello, nos enfocamos en brindar un servicio ajustado a las necesidades del hombre moderno sin perder de vista los cuidados y atenciones que pueden encontrarse en las barberías tradicionales.The objective of the project is to implement a Barber truck, in which it is hoped to satisfy in a different way the growing market for men's beauty and cosmetics. Although this market is growing in general, the competitors can be standardized in their presentation and services and do not differ much from each other. The project seeks the implementation of a higher level rolling barbershop, where the main task will be to work on every detail. The mobile barber service "Barber Truck Lima" is focused on the male public between 18 and 39 years old who live or frequent the districts of Independencia, Los Olivos and San Martín de Porres in socioeconomic sectors A, B and C. Taking into account the need to find the service of a mobile barber shop seeks to be an aid to those gentlemen who are constantly taking care of their personal image and who want to better organize their time in relation to the haircutting and barber service they access. Provide a service that meets the needs of modern man without losing sight of all the care and attention that can be found in traditional barbershops.
Trabajo de investigación
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Shin, Ery. "Modernism and the queer : Djuna Barnes/Gertrude Stein." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:71b77d1c-7981-497a-a5c5-8113f5d08c7f.
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Djuna Barnes and Gertrude Stein may appear unrelated to one another at first glance. We have an impoverished upstate New Yorker versus relatively comfortable Californian, bisexual romantic nomad versus lesbian monogamist, nihilist versus life-affirming enthusiast, and agnostic-atheist versus secular Jew. When they are referenced together (which happens rarely), it is usually in the context of their Parisian exploits. But a closer look reveals more vital affinities. Both writers remain problematically situated in the modernist canon. Both were inspired by visual art. Both struggled to get published during their lifetimes. Both disassociated themselves from mainstream feminist movements, preferring subtler, more idiosyncratic ways of questioning the status quo. Both held a sustained interest in the queer and, as this dissertation seeks to demonstrate, imagined that theme in original ways—Barnes, through loss; Stein, through phenomenology. Writing out of the spirit of Christian martyrdom, Barnes revels in queer suffering and its transfiguring potential: queers extravagantly lose (themselves), fail, and suffer, yet such ordeals aren’t without value. The first half of my dissertation, thus, appraises Barnes’ “queer negativity” in general before pondering how its masochistic energies push against those authorities that would negate the queer. Chapter One analyzes Barnes’ mythical-seeming transgendered figures who encounter profound failure, despite the imaginative freedom emanating from their ahistorical surroundings. Barnes’ sense of queer failure intensifies in Chapter Two, where same-sex desire invokes the abject by symbolically collapsing psychic boundaries between lovers and refusing reproductive futurity. Both chapters contextualize the moral inversion that becomes the focus of Chapter Three: how does such nihilism tragically ennoble the queer and endow it with insurgent impulses? Without taking a self-consciously queer activist stance, Barnes draws on what Gilles Deleuze would later enunciate as an inverted affect regime: the power of punishment to enforce repressive sexual regulations through pain and hence to bridle perversion becomes inverted when punishment opens the portal to pleasure, when pleasure relocates to sites of perversion. If Barnes writes as a romantic martyr, Stein looks at the queer through a phenomenologist’s eyes. The reciprocity between social conditioning and consciousness, in particular, remains an urgent concern throughout her career. To be “queer,” one often breaks away from a lifetime of habituated orientations toward sex and gender. But queerness cannot wholly bracket the norms that have been left behind. It exists in relation to what it queers. Foregrounding this discussion, Chapter Four examines how Stein’s modernism, phenomenology, and queer criticism intersect. Chapter Five investigates how “Miss Furr and Miss Skeene,” “Many Many Women,” and The Making of Americans reorient us from the “straight” and narrow. Yet this reorientation remains partial. Not all heteronormative biases can be shed, as is evident in The Making of Americans’ classist undertones running through its “singular” queer vision. The sixth chapter further tests the limits of reorientation as such. Ida’s Ida desperately wants to live a queer life, but discovers that she cannot if she approaches queerness as a radically separatist ideal. A solipsistic universe where she can entirely withdraw from society through sleep, silence, or soliloquy remains a fantasy. Ida’s internal conflict, in turn, mirrors Stein’s struggle to enact aesthetic modes that prove just as impossible to practice, being devoted to eliminating memory, emotions, personal identity, and social awareness.
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Formichella, Marc. "Functional equations among Barnes' integrals and hypergeometric series." Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3315801.
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White, David Elliot. "Simulation-based Optimization of Coal Barge Scheduling." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-01082008-080147/.
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In an attempt to improve the process of supplying coal by way of water to Progress Energyâs Crystal River power plant, a simulation-based technique was developed to find the best schedule of coal barges. The technique uses discrete event simulation principles to find the best solution based on two criteria: minimal demurrage cost and maximal coal tons moved. Many factors are taken into account including channel capacity, tide dependencies, weather delays, periods of scheduled down time, and percentage of trips to each coal terminal. The same technique is also used for long range planning in the decisions of capital allocation of equipment, barge contracts, and coal supplier contracts. A Graphical User Interface coupled with Visual Basic .Net (VB .Net) code is used to implement the approach in a user-friendly and maintainable environment.
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Bissell, Michelle L. "The Barest Rib." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1257255944.
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Barge, Uwe. "Technische, ökologische und ökonomische Kriterien für die Wahl von Gesteinskörnungen zum Bau und zur Erhaltung von ungebundenen Deckschichten im Waldwegebau." [S.l. : s.n.], 2000. http://webdoc.sub.gwdg.de/diss/2001/barge/barge.pdf.
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Wozniak, Hervé. "Morphologie et dynamique des galaxies barres de type precoce." Paris 7, 1991. http://www.theses.fr/1991PA077270.
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Les barres stellaires visibles dans plus d'un tiers des galaxies a disque posent de nombreux problemes, notamment concernant leur structure dynamique. Leurs proprietes globales, telles que leur luminosite, leur masse, etc. , sont tres mal connues ce qui gene considerablement la construction de modeles dynamiques realistes et auto-consistants. Nous avons donc porte notre effort sur des galaxies barrees de type precoce (classees sbo) de facon a n'etudier que des barres debarrassees de structures accompagnatrices tels les bras spiraux, les bandes de poussieres, etc. La relative simplicite de ces objets (bulbe, barre, disque) n'empeche en rien une grande variete morphologique. Aussi, nous avons construit un echantillon contenant 17 galaxies de type sbo parmi un ensemble d'une trentaine de galaxies observees au 60 cm d'hawaii par m. J. Pierce (d. A. O. ), au 1. 54 m danois de l'eso par a. Bosma (observatoire de marseille) et au 120 cm de l'ohp par nous-meme. Dans un premier temps, nous avons etudie la morphologie des barres. Les isophotes des barres ayant un aspect plus rectangulaire qu'elliptique, nous avons cherche a caracteriser de maniere objective l'ecart entre l'isophote reelle et l'ellipse qu'on lui ajuste. Pour cela, un parametre de forme (c) a ete introduit dans l'equation de l'ellipse afin d'ajuster des formes allant du losange (c tendant vers 1) au rectangle (c tendant vers l'infini) en passant par l'ellipse (c egale 2). Il a ete ainsi montre que le parametre de forme atteint un maximum pres de la fin de la barre, ce maximum valant pour notre echantillon entre 2,5 et 5,5. Apres soustraction du bulbe, l'excentricite de la barre decroit avec le rayon. Sur un cinquieme de la longueur de la barre, l'excentricite peut decroitre de 0,7-0,9 a 0,5 vers la fin de la barre. Des resultats similaires ont ete obtenus sur des barres issues de simulations numeriques. Ces ecarts a l'ellipticite presents dans la distribution de masse doivent evidemment avoir des repercussions sur la dynamique interne des etoiles et du gaz de la barre. Toutefois, jusqu'a present, aucun modele n'a serieusement pris en compte l'aspect reel des barres, adoptant generalement une distribution elliptique de masse (notamment les ellipsoides de ferrers) ou une expression du potentiel ne contenant qu'une perturbation de symetrie d'ordre 2. Aussi, plutot qu'introduire arbitrairement une composante quadrupolaire ou d'ordre superieure dans le potentiel, nous avons choisi de mesurer directement les composantes de fourier du potentiel sur des images corrigees de l'inclinaison sur le plan du ciel. Dans la mesure ou, selon differents arguments independants, les barres semblent etre des structures de faible epaisseur, il suffit de resoudre l'equation de poisson dans le plan de l'image. Le rapport masse-luminosite est suppose constant dans le bulbe et la barre, ce qui est compatible avec nos mesures de gradient d'indice de couleur. Les potentiels ainsi calcules ont permis de mettre en evidence certaines lacunes des modeles traditionnels. On retrouve evidemment le fait que les modeles ne prennent pas en compte la rectangularite de la distribution de masse. D'autre part, il apparait que la variation de l'excentricite de la barre joue un role tres important qui ne peut etre entierement reproduit par des modeles a excentricite constante. Par exemple, nous avons essaye d'ajuster par une methode de moindres carres le potentiel d'un ellipsoide de ferrers a celui calcule pour ngc 936. Il s'avere qu'il est impossible d'ajuster les composantes m=2 et m=4 avec un seul et meme modele. Le potentiel de l'une des galaxies de l'echantillon (ngc 936) a ete etudie plus en detail. Les equations du mouvement ont ete integrees afin de trouver les familles d'orbites periodiques et de construire des diagrammes caracteristiques. La serie de fourier du potentiel a ete tronquee afin d'etudier les changements qu'introduisent chacune des composantes. Ainsi, trois configurations de potentiel ont ete utilisees: un potentiel compose uniquement de la partie axisymetrique (m=0), l'ajout de la composante m=2 et enfin, l'addition de la composante m=4. Les diagrammes caracteristiques ont ete completes par des surfaces de sections calculees dans les memes configurations afin d'evaluer l'importance des regions de l'espace des phases occupees par les orbites piegees, semi-ergodiques ou ergodiques. Les orbites periodiques calculees montrent que ni celles de la famille x1, ni celles de la famille 4/1, deux familles sur lesquelles on peut construire la forme rectangulaire de la densite de masse dans les modeles traditionnels, ne peuvent, dans notre cas, contribuer au squelette de la barre. En effet, ces orbites sont generalement instables ou n'ont pas la bonne geometrie. Aussi, afin de reproduire la forme rectangulaire, il semble necessaire d'invoquer soit la superposition d'orbites asymetriques de la famille 3/1, soit des orbites semi-ergodiques confinees par un cantori autour de la x1, soit des or
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Guessab, Benaceur. "Contribution au calcul en plasticité des structures à barres." Grenoble 1, 1992. http://www.theses.fr/1992GRE10201.
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Le calcul en plasticite des structures a barres est base sur la schematisation du milieu continu tridimensionnel en un milieu unidimensionnel, dit milieu generalise. Dans ce dernier milieu, l'etat de contraintes est defini par les six sollicitations (ou contraintes generalisees) qui agissent sur une section droite de la barre. Le comportement plastique du milieu generalise est defini par la donnee d'un critere de plasticite fonction des contraintes generalisees. Ce critere est obtenu classiquement a partir de distributions de contraintes plastiquement admissibles sur une section droite de la barre. Les charges limites calculees dans le milieu unidimensionnel en utilisant les criteres classiques ne peuvent etre situees relativement a celles obtenues dans le formalisme du milieu tridimensionnel. Une nouvelle methode pour la determination des criteres de plasticite en variables generalisees est proposee dans ce travail. Cette methode consiste en l'etude des chargements supportables d'un troncon de barre soumis a des conditions aux limites cinematiques particulieres. Le choix de telles conditions a pour but d'autoriser un retour licite en vitesse de deplacement du milieu unidimensionnel vers le milieu tridimensionnel. De ce fait le sens des charges limites obtenues dans le milieu generalise se trouve-t-il bien precise. La methode proposee est appliquee dans le cas de barres a section rectangulaire et en double te. Les criteres qui en decoulent sont compares aux criteres classiques ainsi que les charges limites de structures, determinees dans le cadre propose et le cadre classique
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Henke, Christoph. "Vergangenheitsobsessionen : Geschichte und Gedächtnis im Erzählwerk von Julian Barnes /." Trier : WVT, Wissenschaftlicher Verl. Trier, 2001. http://catalogue.bnf.fr/ark:/12148/cb38899872z.
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Crespin, Laurent. "Sélection et dispersion dans la zone d'hybridation entre "Barbus barbus" et "Barbus meridionalis" (Ciprinidae) : capture/recapture et marqueurs allozymiques." Montpellier 2, 1996. http://www.theses.fr/1996MON20043.
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Les zones d'hybridation sont des laboratoires naturels pour l'etude des phenomenes selectifs qui preservent l'integrite des especes biologiques. Deux cyprinides, le barbeau commun et le barbeau meridional ont donne naissance a la zone d'hybridation de la lergue (affluent de l'herault, france, chapitre i) que nous avons etudiee a la fois par une approche classique de genetique des populations (allozymes) et par la methode de capture/recapture en milieu naturel. Cette zone d'hybridation presente des clines allozymiques concordants mais non coincidents (chapitre ii). Les genotypes hybrides analyses sont recombines (tres peu de f1). Les differents echantillons etudies ne presentent pas d'ecart significatifs forts par rapport aux proportions d'hardy-weinberg. Le desequilibre de liaison mis en evidence est important. L'analyse genetique d'un retrocroisement male b. Barbus x femelle f1 (male b. Meridionalis x femelle b. Barbus) a demontre l'existence d'une distorsion de segregation en faveur des alleles de barbus meridionalis a la f1 et d'un phenomene d'affinite meiotique (chapitre iii). La liaison entre les marqueurs genetiques (allozymes) et les marqueurs morphologiques (diverses mesures) est forte. L'analyse de la survie in natura a permis de montrer que les hybrides subissaient une faible contreselection (chapitre iv). La dispersion ecologique et la dispersion efficace semblent fortes (chapitre v). Nous proposons un scenario de fonctionnement de la zone d'hybridation base sur l'ensemble de ces considerations (chapitre vi)
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Konstantinou, Dimitrios S. "Random wave analysis of Ship/Ramp/Barge response." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA384865.
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Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, Sept. 2000."September 2000." Thesis advisor(s): Papoulias, Fotis A. Includes bibliographical references (p. 125). Also available online.
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Jung, Kwang-Hyo. "Experimental study on rectangular barge in beam sea." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2249.
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This study presents laboratory observations of flow characteristics for regular waves passing a rectangular barge in a two dimensional wave tank. The rectangular barge was fixed and free to roll (one degree of freedom) in a beam sea. Particle image velocimetry (PIV) was employed to measure the velocity field in the vicinity of the structure. The mean velocity and turbulence properties were obtained by phase-averaging the velocity profiles from repeated test runs. The quantitative flow characteristics were represented to elucidate the coupled interactions between the regular wave and the barge in roll motion or fixed condition. Additionally, the turbulence properties including the turbulence length scale and the turbulent kinetic energy budget were investigated to characterize the flow pattern due to the wave interaction. Because all the data including wave elevations, roll motion, and dynamic pressure were synchronized with velocity profiles, the results between the roll motion and the fixed condition were compared. The viscous effects due to the flow separation depend on the relative relation between the wave water particle motion and the roll motion of the barge. The viscous damping mechanism that reduces the roll motion at the roll natural period wave is illustrated. It shows that the vortex flow was mainly induced by the roll motion. For wave periods longer than the roll natural period, the flow was separated in different directions accompanying the roll natural period wave. The longer waves may help the roll motion with the vortex flow predominantly separated by the wave water particle motion rather than the barge motion. This may be called the viscous exciting effect. Moreover, the variations of dynamic pressures near the corners were measured and analyzed along with the viscous effect for both the roll motion and the fixed barge cases.
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Hajiarab, Mohammad. "Roll damping prediction of a free floating barge." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/1903.
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Traditionally the problem of calculating the motion responses of a ship in a seaway has been formulated in frequency domain in terms of linear potential theory. By using the potential flow method in roll calculation, the fluid is assumed to be ideal, irrotational and viscous effects are neglected. Experiments have shown that the roll amplitude responses of rectangular bodies floating in beam waves are overestimated when calculated by potential flow method. This is largely attributable viscous effects [1]. For this reason seakeeping calculation methods introduce empirical factors to account for viscous effects. On the other hand, much of the nonlinear forces and moments experienced by ship in a seaway may be due to the viscous effects leading to flow separation and generation of vortices [2]. One approach to modelling flow separation and vortex shedding is to solve the Navier-Stokes equations. However, for moving bodies in the presence of a free surface at high Reynolds numbers (which implies the use of fine computational meshes) the software and hardware resources required, supposing the problem is even viable, are often so large as to be prohibitive. Another approach is to use methods based on vortex dynamics for modelling separated flows about bluff bodies. These methods were developed as a means of modelling high Reynolds number flows in which the vorticity is confined to small sub-domains of otherwise irrotational flows [2]. This work concerns development of a purely theoretical model for estimating the roll response of vessels that takes these effects into account. The objective of this thesis is to develop a model including viscous effects that can be used in seakeeping and survivability calculations. The idea being proposed is to match a local discrete vortex based method to a global model of a body floating with six degrees of freedom. A software is developed that can be bolted on to conventional seakeeping software so that the motions of sharp edged bodies floating in waves can be calculated without recourse to empirical methods. The theoretical approach to predict roll damping for a three-dimensional barge shaped floating vessel in the frequency domain is described here. The approach consists of matching a simple discrete vortex method (DVM) describing local separated flow, to an inviscid three-dimensional seakeeping code. Model tests have been carried out to validate the theoretical model and the associated add-on software. As demonstrated in this report, there is a good agreement between the model test RAO and the damped RAO indicating the theoretical method provides a good estimate of the viscous damping of the vessel due to vortex shedding from its edges. Although viscous damping in sway and heave motions is not as significant as for the roll for a barge the same methodology can be used to calculate viscous damping for both sway and heave as well. As tangential relative fluid velocities are used in this method the same final relative velocities can be used to calculate skin friction damping component. In this study skin friction damping is considered to be negligible and is ignored in the final calculated damped RAO.
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Wiryawiwatt, Charupan. "Museum of royal barge : the kingdom of Thailand /." Thesis, Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25955809.
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Thesis (M. Arch.)--University of Hong Kong, 1997.Includes special report study entitled: Water : the scientific and spiritual reading of water and its influences in Thai culture. Includes bibliographical references.
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Stépanian, Alexis. "Evolution morphodynamique d'une plage macrotidale à barres : Omaha beach (Normandie)." Phd thesis, Université de Caen, 2002. http://tel.archives-ouvertes.fr/tel-00003997.
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Ce travail concerne la morphodynamique de la plage macrotidale Omaha beach en Normandie. L'objectif est d'étudier l'évolution morphologique des barres intertidales à partir de mesures topographiques et hydrodynamiques selon deux échelles temporelles complémentaires. A court-terme (échelle du cycle tidal à la semaine), la morphologie est conditionnée par l'intensité de l'agitation modulée par les cycles tidaux. En faible agitation, la migration des barres vers le haut de plage est générée par des transferts de sables du revers vers le talus dans la zone de swash et de déferlement. Une augmentation de l'agitation s'accompagne d'une intensification du courant de retour et peut entraîner l'érosion des barres de la partie supérieure de la plage. A moyen terme (échelle mensuelle à annuelle), les barres intertidales présentent un comportement morphodynamique séquentiel. Les phases d'accrétion correspondent à des périodes de faible agitation pendant lesquelles les barres se construisent et migrent vers le haut de plage à une vitesse inférieure à 1 m par jour. A l'inverse, les phases de destruction résultent des tempêtes dont l'action érosive est modulée par le niveau tidal et la morphologie pré-existante. L'alternance de ces phases est liée à l'exposition particulière de la plage d'Omaha beach vis à vis des vents dominants. Une dynamique longitudinale des barres et des chenaux de drainage associés est également mise en évidence. C'est un facteur de déstabilisation des barres qui fragilise leur résistance à l'action des tempêtes. De plus, la présence des barres et leur évolution morphologique est la traduction topographique de réorganisations d'un stock sableux intertidal stable. Les conditions d'apparition, de migration et de destruction des barres intertidales ainsi identifiées, l'évolution morphodynamique d'Omaha beach est alors schématisée sous la forme d'un modèle d'évolution et une hypothèse de formation des barres intertidales sur les estrans macrotidaux est proposée
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Frödin, Ellen. "Hatten, dockan, capen, byrån : ting och tinglighet hos Djuna Barnes." Thesis, Stockholms universitet, Avdelningen för litteraturvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-96807.
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The inhuman element in Djuna Barnes’s works has been widely acknowledged. So far the research has, however, concerned itself primarily with animality, thus neglecting the importance of things and thingliness in her texts. In this essay I outline a new way of approaching Barnes were things are taken into account as a vital element in her literary world, using theories on prostheses, fetishes and souvenirs. In Nightwood and four of the short stories, ”A Night Among the Horses”, ”Aller et Retour”, ”Cassation”, and ”The Grande Malade”, I examine clothing, interiors, collections, statues and dolls as objects that in different ways harbour meaning, dream, riddle, memory, history, longing and desire. The aim is not at translating these objects; my concern is not so much with what they mean, as how they mean; how they are used and thus how they interact with the characters.
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Armond, Kate. "Wyndham Lewis and Djuna Barnes : modernist writers and German expressionism." Thesis, University of East Anglia, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.577645.
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This thesis considers the impact of German Expressionism on Anglo-American writers by focusing on the work of Wyndham Lewis and Djuna Barnes. Chapter One analyses Wassily Kandinsky's play Yellow Sound, and his theories of art, alongside Wyndham Lewis' Vorticist drama Enemy of the Stars. I trace similarities between the techniques used by both writers to develop awareness of spatial composition and non- representational form. Chapter Two rejoins Lewis in 1919 as he approaches the topic of art's potential to rehabilitate a war-torn society, and I argue that an examination of the work of Expressionist architects such as Bruno Taut and Paul Scheerbart allows insights into a particularly unusual moment in Lewis's career. By analysing the intellectual and ideological context of an architectural project with similar concerns, prejudices and goals, it is possible to see Lewis' pamphlet as an exceptional phase in his writing in which he teeters on the brink of approving political engagement for the arts and echoes many of the ideas promoted by Germany's Activist programme. These images of a revolutionary utopian architecture can be traced to Lewis' construction of the Magnetic City in The Human Age. Chapters Three and Four explore Djuna Barnes' novel Nightwood in the context of Waiter Benjamin's The Origin of German Tragic Drama, acknowledging connections between seventeenth-century and Expressionist aesthetic forms at the time of Barnes' arrival in Berlin. Chapter Five considers the details of the Weimar stage and Schrei performance techniques and their particular significance for Barnes' portrayal of Dr. O'Connor and Robin Vote. The study concludes by reappraising the connections discovered between modernism and Expressionism in the context of Georg Lukacs' critique of the movment.
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McDonaugh, Karen Louise. "Subjection and subversion : a critical reading of Djuna Barnes' 'Nightwood'." Thesis, Cardiff University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399234.
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McNeary, Nora K. "Performative Identity in Djuna Barnes' The Ladies Almanack and Nightwood." Scholarship @ Claremont, 2016. http://scholarship.claremont.edu/scripps_theses/848.
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This thesis discusses performative identity in Djuna Barnes' The Ladies Almanack and Nightwood. Barnes' characters create and perform their identities as an attempt to escape or subvert patriarchal norms and societal prejudices. In analyzing the marginalized performative identity categories (race, class, gender, sexuality), one can glean an understanding of the complex social tensions present during Barnes' era, and understand the socially constructed, confining nature of identity itself.
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Frech-Fuccellaro, Marie-Thérèse. "Utilisation des barres d'ancrage en prothèse adjointe de grande étendue." Nantes, 1985. http://www.theses.fr/1985NANT1508.
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Godo, Emmanuel. "Poetique de venise : maurice barres et le lieu de l'ecriture." Lille 3, 1995. http://www.theses.fr/1995LIL30003.
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"c'est a venise que j'ai decide toute ma vie" ecrit barres en prefacant sa trilogie du culte du moi, en 1892. Venise represente en effet le lieu fondateur de son experience d'ecrivain. D'abord ville de l'individualisme triomphant, de la reclusion orgueilleuse et de l'edification de soi, venise devient progressivement la ville des miasmes, du pourrissement et de la volupte morbide. Cette metamorphose de la figure de la ville, corollaire de l'enracinement lorrain de barres, permet de rendre compte de l'evolution profonde de l'oeuvre mais en meme temps de sa coherence. Melange de fascination et de repulsion, de desir et de rejet, le rapport de barres a venise ressemble a celui qu'il entretient avec l'ecriture. La these etudie les diverses figurations de venise dans l'oeuvre - venise egotiste d'un homme libre (1889), venise romanesque de l'ennemi des lois (1892) et de l'appel au soldat (1900), venise poetique d'amori et dolori sacrum (1903) - et montre comment chacune propose une reflexion sur l'acte meme d'ecrire, ses procedures et ses enjeux"venice is the place where my whole life was decided" barres wrote in his introduction to his trilogy le culte du moi in 1892. As a matter of fact venice represents the founding place of his experience as a writer. Being first a city of triumphant individualism, of proud reclusion and edification of the self, venice gradually becomes the city of miasma, of the rotting away and of morbid voluptuousness. This evolution of the re-creation of venice, which appears as a consequence of the newly-discovered awareness of the author's lorrainese roots, enables us to understand the profound change in his work as well as its coherence. Being a mixture of fascination and repugnance, also of desire and rejection, the relationship barres builds up with venice looks very much like the one he develops with the writing process. This thesis studies the various representations of venice in barres'works - the egotistic venice in un homme libre (1889), the novelistic venice in l'ennemi des lois (1892) and l'appel au soldat (1900), the poetical venice in amori et dolori sacrum (1903) - and it also shows how each one of them provides a reflexion on the writing process itself in all its bearings
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Daoud, Rokn Aldin. "Une formulation variationnelle mixte pour la torsion des barres composites." Toulouse, INSA, 1991. http://www.theses.fr/1991ISAT0001.
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Ce travail presente une formulation variationnelle mixte du type des moindres carres permettant de traiter les problemes de la torsion uniforme des barres composites. Par une transformation geometrique, on ramene un probleme anisotrope a un probleme isotrope equivalent. La methode proposee associe, dans la section droite transformee, la methode cinematique de saint-venant en torsion et la methode statique utilisant respectivement la fonction de gauchissement et une fonction de contraintes; elle introduit une fonctionnelle intermediaire dont la minimisation est equivalente a la resolution simultanee de ces deux problemes. L'analogie avec l'elasticite plane anisotrope permet de traiter numeriquement le probleme par la voie des elements finis, moyennant un comportement equivalent. La methode donne, par un calcul unique, les grandeurs physiques et geometriques inconnues du probleme. Les resultats des cas tests ont ete compares a d'autres resultats (analytiques, numeriques, experimentaux). La concordance entre les valeurs montre d'une part la validation de la formulation proposee, d'autre part que l'on dispose d'un programme de calcul permettant de resoudre facilement le probleme
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Racila, Laurentiu Daniel. "Existence et cinématique des mécanismes articulés spatiaux à six barres." Besançon, 2006. http://www.theses.fr/2006BESA2052.
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Parmi la grande diversité des mécanismes articulés, les mécanismes surcontraints à liaisons rotoïdes occupent une place spéciale car ils ne suivent pas les critères habituels de mobilité. Ils sont composés de quatre, cinq ou six barres montées en boucle fermée. S’il existe un seul mécanisme spatial surcontraint 4r et un seul 5r, on rencontre différentes familles de mécanismes 6r. Depuis le xixè siècle, ces derniers font l’objet de nombreuses publications exposant leurs propriétés géométriques et cinématiques. Dans ce mémoire, après un bref historique sur l’utilisation des mécanismes à travers les âges, une analyse cinématique complète de ces mécanismes est présentée. Les équations de fermeture, les équations d’entrée – sortie et les coordonnées géométriques des points représentatifs des mécanismes sont obtenues suivant une méthode originale de calcul qui confirme et étend les résultats déjà publiés. Une application industrielle des mécanismes surcontraints 6r est présentée. Nous montrons qu’il est possible de réaliser un translateur à partir de la structure d’un 6r spatial. L’actionneur de translation obtenu présente un grand avantage car c’est toute une surface, en réalité trois points définissant un plan, qui est en translation. Une étude géométrique et cinématique a été faite pour cette architecture de translateur, afin de mettre en évidence l’influence des différents paramètres géométriques, la précision du déplacement du plan en translation en fonction des variables de commande du mécanisme. Une simulation cao ainsi qu’un prototype de ce translateur ont été réalisées pour confirmer l’exactitude des calculs effectués et valider l’utilité d’un tel produitOverconstrained mechanisms with revolute joints occupy a special place in the big diversity of the articulated mechanisms because they don't follow the usual mobility criterion. They are composed of four, five or six bars in a single loop. If only one 4r and one 5r overconstrained mechanism exists, there exist many 6r oveconstrained mechanisms. Since the 19th century, these mechanisms were the subject of numerous publications exposing their geometrical and kinematical properties. In this memory, after a brief historic on the use of mechanisms over the time, a complete kinematics analysis of these mechanisms is presented. An original calculation method that confirms and spreads the already published results is used to find the loop closure equations, the input-output equation and the representative coordinate points of the mechanisms. An industrial application for the 6r overconstrained mechanisms is also presented. We show that it is possible to achieve a translator from the structure of a 6r overconstrained mechanism. The translator’s platform has the great advantage to present a big surface in the translation defined with good precision by three support points. A geometrical and kinematical study has been made for this translator, underlining the influence of geometrical parameters and the precision of platform displacements according to the different commands variables. A cad simulation and a prototype model have been made to verify the calculus and to validate the utility of this translator
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Dulou, Cyril (19. "Interactions houle-sédiments : application à la formation des barres littorales." Aix-Marseille 1, 2000. http://www.theses.fr/2000AIX11024.
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Le sujet principal de ce travail concerne la genese et la stabilite des corps sedimentaires qui, sur une majorite des avant-cotes sableuses, resultent d'un forcage hydrodynamique et qui participent a l'equilibre general des littoraux sableux. L'interaction houle-fond meuble est etudiee experimentalement a l'aide d'un canal a houle de petite taille. Une houle monochromatique ou bichromatique partiellement stationnaire ou progressive est generee au-dessus d'un fond de sediment monodisperse et non-cohesif. Grace a une instrumentation adaptee, des mesures spatio-temporelles de l'evolution du fond et de l'enveloppe de la vague ont permis d'observer differents mecanismes de formation des barres littorales. Par soucis de simplicite, la premiere partie de cette etude est consacree a la zone faiblement non-lineaire precedent la zone de deferlement. Cependant, le role des interactions non-lineaires onde-onde a ete mis en evidence dans la formation des barres en plus du role de la reflexion, en tirant profit d'un artefact initial du canal qu'etait la generation d'une onde parasite par le batteur. Ces resultats ont montre la predominance du premier harmonique dans la formation des barres. Pour se rapprocher du cas naturel, le deferlement a ete introduit. L'utilisation de trois granulometries differentes a permis de modeliser le transport par charriage et par suspension qui ont conduit a des directions de migration de barres differentes. Enfin, dans le cas du transport par suspension, les resultats trouves hors zone de deferlement permettent une meilleure comprehension du role des non-linearites des vagues sur la formation des barres en presence de deferlement.
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Brun, Arnaud. "Evaluation des propriétés de matériaux viscoélastiques par barres de Kolsky." Bordeaux 1, 2000. http://www.theses.fr/2000BOR12276.
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Le but de l'étude est de développer des méthodes permettant d'obtenir fréquence par fréquence les propriétés mécaniques de matériaux viscoélastiques linéaires isotropes ou anisotropes dans la gamme des fréquences audibles. La méthode des barres de KOLSKY ou de HOPKINSON qui permet d'atteindre cette plage de fréquences a été étendue au cas de barres viscoélastiques. Les propriétés viscoélastiques de la barre sont alors obtenues par la mesure du coefficient de propagation complexe qui dépend de la vitesse de phase et de l'atténuation du matériau constitutif de la barre. La force normale et la vitesse particulaire axiale d'une section droite de la barre peuvent ainsi être déterminées en tout point de celle-ci. Dans le cas de barres possédant une impédance mécanique non-uniforme inconnue, une méthode est développée. Elle permet d'atteindre simplement, sans connaissance a priori de la forme de la variation d'impédance de la barre, 1a force normale et la vitesse particulaire axiale à l'extrémité de celle-ci. Cette méthode peut notamment être utilisée lors d'essais en température. Afin de déterminer les propriétés viscoélastiques de matériaux composites qui ne se conforment pas facilement sous la forme de barre longue, une méthode permettant de caractériser des éprouvettes de faibles longueurs (10 à 20 cm) est présentée. Elle utilise une barre d'entrée longue instrumentée servant de dispositif de mesures au bout de laquelle est collée l'éprouvette à caractériser. Une étude de sensibilités a permis de déterminer avec précision le couple [barre d'entrée] / [méthode de résolution du problème inverse] à choisir en fonction de la gamme de fréquences d'obtention des propriétés viscoélastiques. Un dispositif expérimental original est alors construit permettant d'atteindre les fréquences comprises entre 100 Hz et 40 kHz. Cette méthode a été validée sur un polymère isotrope (PVC) et a été appliquée avec succès à un composite Verre/Époxy.
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Pracht, Philippe. "Etude des mécanismes à 4 barres : une application en productique." Besançon, 1988. http://www.theses.fr/1988BESA2028.
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Pracht, Philippe. "Etude des mécanismes à quatre barres une application en productique /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37617705x.
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Marques, André. "Optimização da gestão de bares nas unidades do Exército." Master's thesis, Academia Militar. Direção de Ensino, 2010. http://hdl.handle.net/10400.26/7044.
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Tendo em conta a conjuntura económica actual e o clima de instabilidade e crise financeira, é deveras importante para qualquer organização que se façam esforços no sentido de se seguir uma política de contenção de recursos.
De facto, para minimizar os sintomas e minimizar as repercussões deste meio, a esfera de defesa deve ser de tal forma global, que deve albergar desde sujeitos singulares, até às
maiores organizações. Assim, a referida política de contenção de recursos deve ser vista como um meio de sustento mais ou menos garantido. É neste âmbito de minimização de despesas e maximização de receitas que o objectivo deste trabalho surge. Mesmo sabendo que a organização, Exército, não tem fins lucrativos, não possui também a missão de criar prejuízos desnecessários. Assim, deve ter-se em mente que a crise abala qualquer sujeito, como já referido.
Contudo, as actividades principais e vitais de qualquer entidade não devem ser postas em causa com o argumento da crise. Desta forma, é necessário verificar-se através de estudos qual ou quais as actividades que são fonte de despesas dispensáveis e, com esforço, transforma-las em lucro ou, pelo menos, em actividades não dispendiosas.
No lote destas actividades, encontram-se os bares das unidades do Exército e, assim, este trabalho revela o que de possível poderá ser feito para atingir o seu objectivo: reduzir algumas verbas desnecessariamente desembolsadas pelo Exército e transformá-las em fonte de receitas. Provavelmente “uma gota no Oceano”, contudo “Roma não se fez num dia…”Abstract Studying the actual economic environment and financial crisis, is very important for any organization to make efforts to follow a policy of resource contention. Indeed, to minimize the symptoms and repercussions of this situation, the sphere of defense should be so comprehensive that it should accommodate from singular persons, to the largest organizations. As such, the containment resources policy should be seen as a mean of supporting more or less guaranteed. It is in this context to minimize costs and maximize revenue that the purpose of this work arises. Even though the organization, Army, has not the objective of making profits, it has not also the task of creating unnecessary costs. Therefore, it can not be forgotten that the crisis touches any subject, as already mentioned. However, the main activities and vital to any entity should not be challenged because of the crisis. Thus, it is necessary to verify through studies which of the activities that are a source of unnecessary expenditure and, with effort, transform them into profit or at least, in non expensive activities. In the lot of these activities, are the bars of the Army units and so, this work reveals that the possible will be done to achieve its objective: to reduce some unnecessary funds disbursed by the Army and turn them into a source of revenue. In resume, an analysis is made of several possible models for the management of bars of the Army - from the traditional use of the Army Human Resources (bartenders) to the hiring of specialized entities (Outsourcing) - comparing and concluding about the most beneficial for the National Treasury