Dissertationen zum Thema „Marches orientées“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Machen Sie sich mit Top-17 Dissertationen für die Forschung zum Thema "Marches orientées" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Sehen Sie die Dissertationen für verschiedene Spezialgebieten durch und erstellen Sie Ihre Bibliographie auf korrekte Weise.
Ducournau, Aurélien. „Hypergraphes : clustering, réduction et marches aléatoires orientées pour la segmentation d'images et de vidéo“. Ecole nationale d'ingénieurs (Saint-Etienne), 2012. http://www.theses.fr/2012ENISE011.
Der volle Inhalt der QuelleGraphs have been successfully used in Pattern Recognition and Computer Vision domains for a number of years, due to their ability to represent relational patterns. However, their main limitation comes from the fact that they are only able to model pairwise affinities between elements of interest. In this work, we focus on exploiting the advantages of hypergraphs, which generalize the graph concept by providing the possibility to model relationships of higher dimension, in the domain of image analysis and more particularly image processing such as image or video segmentation. This thesis mainly focused on how we can represent the image data into a hypergraph-based model, and how we can handle such a representation in a particular application. In many of these applications the problem can be formulated as a partitioning of the underlying hypergraph structure, and consequently we developed a novel hypergraph partitioning and clustering approach (RHC), based on the reduction of the hypergraph structure. Two novel hypergraph reduction algorithms (HR-IH and HR-MST) have been designed for this purpose. The RHC framework has been exploited in different computer vision problems (image segmentation, object-based video segmentation and superpixels generation), for which appropriate hypergraph-based models have been designed. Finally, the notion of directed hypergraph has been introduced in the computer vision domain, by proposing both a directed hypergraph-based representation of the image content (DINH), and an interactive image segmentation algorithm by semi-supervised learning on such a DINH. The latter is formulated in terms of Markov random walks on directed hypergraphs, for which an appropriate transition matrix and important mathematical properties have been developed. Extensive experiments have shown that hypergraphs can in general provide a richer image representation model thangraphs, and that the proposed algorithms are efficient both in terms of segmentation quality and complexity. It has also been shown that using directed hypergraphs can provide an improvement to undirected hypergraphbased structures
Wu, Meng. „Analyses multifractales de certaines moyennes ergodiques non-conventionnelles“. Amiens, 2013. http://www.theses.fr/2013AMIE0116.
Der volle Inhalt der QuelleThis thesis is mainly focused on the study of some multiple ergodic averages from multifractal analysis point of view. In a full symbolic space with finite symbols, for potentials depending only on the first coordinate, we obtain a complete solution to the problem of multifractal analysis of the limit of the multiple ergodic averages. To this end, we develop in this setting a non-invariant and non-linear version of thermodynamic formalism, which has its own interest. We also study v-statistics in saturated systems and we establish a variational principle for the entropy spectrum of the v-statistics. Finally, we study individual behaviors of oriented walks in rd and we give a complete multifractal decomposition of the asymptotic comportments of these oriented walks. In the two first cases mentioned above, new interesting phenomena appear, comparing to the case of classical ergodic averages. In the multiple ergodic average case, there are in general no invariant measure with the same dimension as the level sets. Moreover, the invariant and the mixing spectra differ. For the v-statistics, the entropy spectra may be discontinuous even for holder continuous potentials
Gastebois, Jérémy. „Contribution à la commande temps réel des robots marcheurs. Application aux stratégies d'évitement des chutes“. Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2315/document.
Der volle Inhalt der QuelleBig walking robots are complex multi-joints mechanical systems which crystallize the human will to confer their capabilities on artefacts, one of them being the bipedal locomotion and more especially the balance keeping against external disturbances. This thesis proposes a balance stabilizer under operating conditions displayed on the locomotor system BIP 2000.This anthropomorphic robot has got fifteen electrically actuated degree of freedom and an Industrial controller. A new software has been developed with an object-oriented programming approach in order to propose the modularity required by the emulated and natural human symmetry. This consideration leads to the development of a mathematical tool allowing the computation of every modelling of a serial robot which is the sum of multiple sub robots with already known modelling. The implemented software also enables the robot to run offline generated dynamic walking trajectories and to test the balance stabilizer.We explore in this thesis the feasibility of controlling the center of gravity of a multibody robotic system with electrostatic fields acting on its virtual counterpart in order to guarantee its balance. Experimental results confirm the potential of the proposed approach
Leroux, Philippe. „Description algèbrique des graphes orientés pondérés et applications“. Phd thesis, Université Rennes 1, 2003. http://tel.archives-ouvertes.fr/tel-00007375.
Der volle Inhalt der QuelleWang, Lei. „A study of the performance of market oriented reforms in the chinese telecom industry“. Thesis, Evry-Val d'Essonne, 2013. http://www.theses.fr/2013EVRY0027/document.
Der volle Inhalt der QuelleWith the advent of information economy people all over the world have a higher and more extensive demand on the communications industry. Since the 1980s there has emerged a dominant trend in countries around the world to deregulate the telecom industry and introduce market-oriented reforms. Up until the 1980s the Chinese telecom industry was still monopolized by the government and the country’s market-oriented reforms in the industry lagged behind many other rapidly developing nations. The problem of high expense, low service quality, and insufficient service capacity made it urgent to open up the Chinese telecom market. Compared to other competitive industries it can be said that the telecom industry comprehensively and strategically influences the overall harmonious and sustainable development of a national economy. Reform in the telecom industry covers a wide range of areas and is closely associated with the national welfare and people’s livelihood. As such it attracts great attention from the public at large. Compared to other industries in China whichare also regulated by the government, China’s telecom industry (the first to carry our market-oriented reforms in the country) is relatively mature as such it can be said that its future reform provides a reference point for market-oriented reforms in other industries as well in the country. Taking this fact into consideration the present thesis chooses market-oriented reforms and the performance of that reform in China’s telecom industry as our research objective. We consider this to be an essential element for the harmonious economic and social development of modern China. It is therefore an urgent issue to be addressed. The whole thesis consists of six chapters and its main content and structure are as follows: Taking into account the characteristics of competition – regulation – reform as a starting point, the thesis utilizes natural monopoly theory, effective competition theory, and industrial organization theory as the conceptual and theoretical basis for our work.It reviews previous work completed in the area then conducts an in-depth analysis of the foundation, development, and characteristics of modern telecom industry, laying atheoretical foundation for studying the performance of market-oriented reform in China’s telecom industry. Secondly, taking into consideration the impact of institutional factors on industrialorganization, the present thesis puts forward a regulation–structure–conduct –performance (RSCP) theoretical framework based on China’s national conditions and takes effective competition as the goal of China’s telecom industry reform. Thirdly, the thesis groups, in a chronological manner, China’s telecom reform into four different phases (since the beginning of the reform and opening up of the economy) which have been identified as: monopoly operation, policy support, introducing competition, and preliminary perfect competition. It then conducts an analysis of the reform background, reform procedure, and reform measures. By analyzing the current situation in China’s telecom industry reform, the thesis attempts to evaluate the performance of the reform in China’s telecom industry. The thesis then calculates the performance index of China’s telecom industry reform and conducts a statistical analysis and hypothesis testing based on correlation analysis and multiple linear regression models respectively. The result shows that market-oriented reform in China’s telecom industry, to some degree, promotes the development of China’s telecom industry, effectively reduces the expenses in telecom services, boosts the number of telecom service users, and optimizes telecom service structure. These positive developments notwithstanding, the study also finds that service quality and capacity are yet to be significantly improved in China’s telecomindustry
Devanne, Anne-Sophie. „Marcheurs en montagne et expérience de l'espace. Une analyse de la construction du rapport à l'espace, à travers la pratique de la marche dans les Pyrénées“. Phd thesis, ENGREF (AgroParisTech), 2005. http://tel.archives-ouvertes.fr/tel-00130902.
Der volle Inhalt der QuelleLapujade, Anne. „Définition d'un méta-modèle et préservation de son intégrité dans la méta-atelier de conception de systèmes de formation MATIF [Marchés à terme d'instruments financiers]“. Toulouse 1, 1997. http://www.theses.fr/1997TOU10001.
Der volle Inhalt der QuelleOur goal is to design and to develop a meta-case (computer assisted software engineering) tool to design training systems. Our meta-case tool allows us to generate design tools based on a training system design method. To reach this goal, we developed a dual problematic : firstly we designed a method meta-model, specific to the educational domain that is based on three components (meta-concepts, meta-rules and metaformalisms) and secondly, we developed a complete set of rules concerning the method meta-model. These rules have three objectives : to ensure the designer's modelling integrity, to define the meta-case design process and to help the expert to use the meta-case tool
Almeida, Ana Catarina Dias Nunes de. „Migração silenciosa. Marcas do pensamento estético do Extremo Oriente na poesia portuguesa contemporânea“. Doctoral thesis, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, 2012. http://hdl.handle.net/10362/7342.
Der volle Inhalt der QuelleNa viragem do séc. XIX para o séc. XX, sobretudo através de Wenceslau de Moraes e de Camilo Pessanha, a literatura e a poesia portuguesas acompanharam o interesse pela poesia do Extremo Oriente que afectou igualmente outras literaturas europeias. Porém, uma influência mais alargada e regular apenas se consolidou desde a década de 1980 em diante. O conjunto de poetas envolvidos e a qualidade e continuidade da sua obra permite falar de uma migração silenciosa de preceitos formais, de obsessões temáticas e de modos de figuração oriundos da poesia chinesa e japonesa. Esse processo lento e subtil está a mudar a relação com a tradição poética e traz consigo novos modos de entender a escrita poética, que requerem a tentativa de leitura sistemática aqui conduzida. O pensamento Zen é igualmente analisado, dado ser claramente parte activa no interesse constante dos poetas portugueses contemporâneos pela poesia clássica e contemporânea escrita na China e no Japão.
Kamal-Idrissi, Assia. „Optimisation des réseaux aériens : analyse et sélection de nouveaux marchés“. Thesis, Université Côte d'Azur, 2020. https://tel.archives-ouvertes.fr/tel-03177526.
Der volle Inhalt der QuelleIn the airline industry, problems are various and complicated. Solving these problems aims at reducing costs and maximizing revenues. Revenues can be increased while improving the quality of service. For example, one way is to catch new passengers on existing flight connections or on new markets. The selection of new markets consists in determining network structure to operate, and to estimate passengers flow, their choice of itineraries as well as incomes and costs incurred by these decisions. Our research is about improving market planner engine. Milanamos develops an application for the analysis and simulation of markets intended for air-ports and airlines. It offers its customers a decision-making tool to analyze historical data andto simulate markets in order to find an economic opportunity. This project takes place earlierin the decision process. Thanks to a thorough data analysis, the air transport network could be modelized as a time-independent graph and stored in the Neo4j graph database. We then defined the Flight Radius problem which resolution allows to determine a sub-network centered around a flight for which market shares of the flight are meaningful. Several methods have beenproposed based on queries or on shortest path algorithms combined with acceleration and parallelism techniques. Our algorithms identify some new markets for a flight. Combining graph theory with databases offers new opportunities for analyzing and studying large networks
Gomes, Gisele de Cassia. „Tradução, adaptação transcultural e exame das propriedades de medida da Escala ¿ Performance-Oriented Mobility Assessment¿ (POMA) para uma amostragem de idosos brasileiros institucionalizados“. [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/253622.
Der volle Inhalt der QuelleDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação
Made available in DSpace on 2018-08-03T19:21:24Z (GMT). No. of bitstreams: 1 Gomes_GiseledeCassia_M.pdf: 1097827 bytes, checksum: 29d853ef4709e1b780a9a2d9e7767696 (MD5) Previous issue date: 2003
Mestrado
Koch, Marcel [Verfasser], und Christian [Akademischer Betreuer] Engwer. „Generating block-structured kernels for low order finite element methods : a high-performance oriented view / Marcel Koch ; Betreuer: Christian Engwer“. Münster : Universitäts- und Landesbibliothek Münster, 2021. http://d-nb.info/123663246X/34.
Der volle Inhalt der QuelleIshizuka, Marise Akemi. „Tradução para o português e validação do teste POMA II \"Performance-Oriented Mobility Assessment II“. Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5144/tde-12012009-142854/.
Der volle Inhalt der QuelleFalls in elderly people are multi factorial events that represent great importance for gerontologists, since they appear with high morbidity and death rates in this age range.This research has the main purpose of performing the trans-cultural translation, validation and adaptation of POMA II (Performance-Oriented Mobility Assessment II) to Brazilian Portuguese and, as secondary purposes, to assess its reproducibility and association between this and other similar functional tests; to calculate its sensitivity and specificity and its predicitive validity.At first, the POMA II test was brought to Portuguese and translated again into English. After the adequacies between the translators, a new Portuguese version was elaborated. The new version was assessed by an experts Committee comprised of doctors with knowledge in the area and by a linguistics professor for cultural adaptations. This version was applied by 15 professionals from the healthcare industry to verify the test applicability and comprehension and in a group of 20 elderly people to verify the level of comprehension of each item. The ultimate version, after the inclusion of a few suggestions, was assessed regarding its validity and its fidelity through its application in elderly individuals residing in a long permanence elderly residence and community elderly individuals (GAMIA- Grupo de Atendimento Multidisciplinar ao Idoso Ambulatorial). POMA II has presented a good intra and inter-rater correlation (r between 0.702 to 0.972, except for gait domain of the GAMIA= 0.510 group) as well as a good correlation with similar functional tests (between 0.500 and 0.920 all with p<0.001), in addition to significant internal consistency (Cronbach of 0.890 and 0.832). The test presented a significant correlation with the related years falls (p= 0.033) but this correlation was poor (r= -0.282). The test showed a good divergent validity (p< 0.001), which showed that the two groups were different. The sensivity was 61% and the specificity was 66%. We have concluded that POMA II is a reliable test with good intra and inter rater correlations, consistent to measure the same phenomenon and with good concurrent validity. However, the predictive validity, specificity and sensitivity of the test showed moderate correlations
Carriere, Thomas. „Towards seamless value-oriented forecasting and data-driven market valorisation of photovoltaic production“. Thesis, Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLM019.
Der volle Inhalt der QuelleThe decarbonation of electricity production on a global scale is a key element in responding to the pressures of different environmental issues. In addition, the decrease in the costs of the photovoltaic (PV) sector is paving the way for a significant increase in PV production worldwide. The main objective of this thesis is then to maximize the income of a PV energy producer under uncertainty of market prices and production. For this purpose, a probabilistic forecast model of short (5 minutes) and medium (24 hours) term PV production is proposed. This model is coupled with a market participation method that maximizes income expectation. In a second step, the coupling between a PV plant and a battery is studied, and a sensitivity analysis of the results is carried out to study the profitability and sizing of such systems. An alternative participation method is proposed, for which an artificial neural network learns to participate with or without batteries in the electricity market, thus simplifying the process of PV energy valuation by reducing the number of models required
Duhaze-Pradines, Loric. „Reachability problems for general rotor walks in graphs“. Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASG051.
Der volle Inhalt der QuelleIn this thesis, we focus on the algorithmic properties of a cellular automaton known as rotor walks. This model has been introduced in two distinct ways. Firstly, as a fundamental operation within another cellular automaton known as Sandpiles, which models the collapse of a sand pile when it becomes too high. Secondly, due to its resemblance to well-studied stochastic models, such as random walks. Indeed, numerous structural properties of random walks (hitting times, cover times, etc.) are analogous to those of this completely deterministic automaton called the rotor walk. The main motivation for this thesis stems from this "derandomization" of a random process. More precisely, a rotor walk corresponds to the movement of a particle on a directed graph following the following rule: initially, an order (a numbering) is fixed on the outgoing arcs of each vertex of the graph. Once the starting position of the particle is defined, each time it is on a vertex, it leaves through the arc with the lowest value that it has not already used. Of course, if all arcs have been used, the process restarts with the lowest value arc. There is a multitude of accessibility problems on rotors, and we aim to compile a list of them in this thesis. We also provide complexity results for some of these problems. Subsequently, we turn our attention to a specific accessibility problem: ARRIVAL. Considering a graph with sinks such that there is a directed path between each vertex of the graph and at least one of these sinks, a rotor walk inevitably terminates. Unfortunately, the number of steps before this process concludes can be exponential. In 2017, Dorhau et al. introduced a problem called ARRIVAL, which seeks to determine if the particle successfully reaches a given sink. They demonstrated that it belongs to the complexity classes NP and co-NP. Being a strong candidate for polynomial algorithm resolution, we investigate this problem on a subclass of graphs where the step count of the process can be exponential: Tree-like multigraphs. These are multigraphs whose underlying undirected graph is a tree. In this context, we show that this problem can be solved in linear time, extending these results to decision versions of the ARRIVAL problem, known to be respectively NP-complete and PSPACE-complete
Lanchier, Nicolas. „Systemes de particules multicolores“. Phd thesis, Université de Rouen, 2005. http://tel.archives-ouvertes.fr/tel-00164594.
Der volle Inhalt der QuelleChicot, Julien. „Strategic use of public procurement for innovation : rationales, instruments and practices“. Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAE012/document.
Der volle Inhalt der QuelleAn increasing number of OECD countries has adopted measures to encourage the use of public procurement to foster innovation. However, implementation of public procurement of innovation (PPI) is lagging behind policy discourse. The ambition of this dissertation is to address this discrepancy by assisting in the design of PPI initiatives, that is, by identifying the innovation-related failures that PPI can overcome, and the most appropriate policy instruments and practices for achieving this objective. We define eight PPI ideal-types according to the type of meso-level market of system failures they address. These failures can relate to users, producers or to their mutual interactions. We confront them with macro-level failures, and determine accordingly the contribution of each PPI ideal-type to distinct mission-oriented policies. Our typology provides a unified PPI framework associating their rationales with their design. Therefore, it contributes to policymaking, and to policy evaluation and analysis. Some PPI categories aim to spur innovation by stimulating the formation of markets. We employ an evolutionary approach to analyse the influence of PPI at the different stages of the dynamic process of market formation through a series of selected existing case studies. We demonstrate that PPI can underpin the different phases of knowledge coordination for market formation, by ensuring appropriate interactions between users and producers early in the public procurement procedure. The literature on private procurement nevertheless shows that early supplier involvement is subject to a number of micro-level failures having their root in procurement practices. Based on interviews with public procurers and suppliers, we identify relevant collaboration failures related to the standard PPI and competitive dialogue procedures. We highlight differences in these failures and their loci between the two procedures. Furthermore, public procurers and suppliers appear to have different perception of the causes of the failures they have encountered. Finally, our findings discuss the influence of the legal framework on PPI and suggest additional PPI procedures and strategies that are favoured by suppliers to varying extents. In sum, our research identifies innovation-related failures at different levels that PPI can resolve, and relevant instruments to help PPI initiative to achieve their objectives. Furthermore, it advocates a dynamic approach considering failures, instruments, and practices at different stages of public procurement procedures, and market formation and public procurer-supplier collaboration processes
Moriceau, Melissa. „Comment la méditation pleine conscience a conquis l’Occident : une étude de cas montréalaise sur les conditions d’importation d’une pratique aux origines orientales“. Thèse, 2018. http://hdl.handle.net/1866/20369.
Der volle Inhalt der Quelle