Dissertationen zum Thema „Au(I) complex“
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Silva, Marcos Afonso da [UNESP]. „Análise complexa e aplicações“. Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153862.
Der volle Inhalt der QuelleRejected by Adriana Aparecida Puerta null (dripuerta@rc.unesp.br), reason: Prezado Marcos, O documento "Análise complexa e aplicações" enviado para a coleção IGCE- Rio Claro foi recusado pelo(s) seguinte(s) motivo(s): - Falta a capa, que é elemento obrigatório e deve vir em primeiro lugar, antes da folha de rosto. - Falta a folha de aprovação, que deve ser solicitada à Seção de Pós-Graduação e deve ser inserida após a ficha catalográfica. O documento enviado não foi excluído. Para revisá-lo e realizar uma nova tentativa de envio, acesse: https://repositorio.unesp.br/mydspace Em caso de dúvidas entre em contato pelo email repositoriounesp@reitoria.unesp.br. Agradecemos a compreensão e aguardamos o envio do novo arquivo. Atenciosamente, Biblioteca Campus Rio Claro Repositório Institucional UNESP https://repositorio.unesp.br on 2018-05-03T16:21:47Z (GMT)
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O objetivo principal deste trabalho é desenvolver um estudo introdutório, porém detalhado, sobre Análise Complexa e algumas de suas aplicações. Apresentamos o corpo dos números complexos, exploramos as funções complexas de uma variável complexa, exibimos parte da teoria das funções analíticas e parte da teoria de integração complexa. Provamos importantes resultados, tais como o Teorema de Cauchy, o Teorema de Taylor, o Teorema dos Resíduos, entre outros igualmente relevantes. Como aplicação da teoria, destacamos a utilização do Teorema dos Resíduos para determinar a transformada inversa de Laplace de uma função F(s).
The main objective of this work is to develop an introductory but detailed study on Complex Analysis and some of its applications. We present the field of the complex numbers, explore the complex functions of a complex variable, exhibit part of the theory of analytic functions, and part of the complex integration theory. We prove important results, such as Cauchy’s Theorem, Taylor’s Theorem, Residue Theorem, among others equally relevant. As an application of the theory, we highlight the use of the Residue Theorem to determine the inverse Laplace transform of a function F(s).
Nascimento, Franciel Araújo do. „Funções trigonométricas complexas: uma abordagem voltada para o ensino médio“. Universidade Federal de Roraima, 2015. http://www.bdtd.ufrr.br/tde_busca/arquivo.php?codArquivo=285.
Der volle Inhalt der QuelleEsta dissertação apresenta um estudo das funções trigonométricas com variável complexa com foco na educação básica. A motivação vem do fato de que se tem dado pouca importância aos números complexos no ensino médio, uma vez que a abordagem atual se restringe às definições, propriedades e exercícios de aplicação teórica e imediata, conforme consta, por exemplo, nos PCNS. Apresenta-se uma abordagem matricial dos números complexos, sem perder de vista a maneira em que esse números são apresentados, como pares ordenados, na matemática básica. Em seguida, apresenta-se as funções com variáveis complexas, suas propriedades e consequentemente um estudo das funções seno, cosseno, tangente, cotangente, secante e cossecante com variável complexa. Comparações entre algumas funções reais e complexas são realizadas. Finalmente, apresenta-se uma aplicação das funções trigonométricas complexa na Física.
This dissertation present a study of trigonometric functions with complex variable with a focus on basic education. The motivation comes from the fact that it has given little importance to complex numbers in school, since the current approach is restricted the settings, properties and theoretical exercises and immediate application, as shown, for example, the NCPS. Presents a approach of the complex numbers through matrix, without losing sight of the way in which those numbers are presented, as ordered pairs, in the basic mathematic. It then presents the functions with complex variables, their properties and consequently a study of sine functions, cosine, tangent, cotangent, secant and cosecant with complex variable. Some comparisons between real and complex functions are performed. Finally, we present an application of complex trigonometric functions in physics.
Gourdon, André. „Synthèse et étude structurale de clusters de fer contenant un hétéroatome du type carbure, nitrure, phosphure“. Paris 6, 1986. http://www.theses.fr/1986PA066404.
Der volle Inhalt der QuelleOliveira, Stanley Borges de. „Números complexos e geometria“. Universidade Estadual da Paraíba, 2014. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2340.
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In the presentdissertation we study complex numbers with a special attention to the geometric aspect. Many geometric problems can be answered using the algebraic notation of complex numbers with their rich geometric interpretations with relative ease. The geometric aspects of the complex numbers are often not taught in high school, not even the trigonometric form (or polar form). Therefore, students do not apply the knowledge of complex numbers to solve geometric problems. In this paper we will approach the complex numbers applied to solve both geometric as algebraic problems, making relate geometric concepts with algebraic concepts of complex numbers, and launched as a proposal to develop the ability of students to relate mathematical content offering opportunity of even better fix the concepts of complex numbers.
No presente trabalho de conclusão de curso trataremos sobre os números complexos com uma atenção especial ao seu aspecto geométrico. Alguns problemas geométricos podem ser solucionados usando a notação algébrica dos números complexos com ajuda das suas ricas interpretações geométricas com certa facilidade. O aspecto geométrico dos números complexos muitas vezes não é ensinado no ensino médio, nem sequer a forma trigonométrica (ou polar). Por essa razão, os alunos não aplicam os conhecimentos de números complexos para resolver problemas geométricos. Em muitos casos, essa abordagem vem a facilitar a resolução das soluções. Neste trabalho faremos uma abordagem dos números complexos aplicados para resolver problemas, ora geométricos, ora algébricos, fazendo relacionar os conceitos geométricos com os conceitos algébricos dos números complexos e vice versa, e lançamos como proposta para desenvolver a habilidade dos alunos em relacionar os conteúdos matemáticos oferecendo oportunidade dos mesmo fixarem melhor conceitos dos números complexos.
Arnold, Rachel Florence. „Complex Analysis on Planar Cell Complexes“. Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/32230.
Der volle Inhalt der QuelleMaster of Science
Reis, Saulo-Davi Soares e. „Navegação em redes espacialmente correlacionadas“. reponame:Repositório Institucional da UFC, 2009. http://www.repositorio.ufc.br/handle/riufc/12888.
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A significant number of real networks have well-defined spatial characteristics. We studied how network with spatially correlated topolgies can influence the processes of navigation through them. For this, we study the behavior of the average shortest-path length to networks defined within Kleinberg’s model [1, 2] to analyze the navigation dictated by rules of global knowledge. The Kleinberg’s model is characterized by allowing long-range connections between two vertices u and v distributed by a power-law probability distribution. For a better understanding of the topological characteristics presented by this family of networks, we applied the epidemic model susceptible-infected-susceptible (SIS) and we found that, we see that the Kleinberg’s model presents the small-world phenomenon only for a certain range of values of the clustering exponent α. We introduced a model of spatially embedded networks, conceptually based on the Kleinberg’s model. This model consist in introduction of a constrain to the distribution of long-range connections. We associate his constrain to a possible cost involved in the process of adding new long-range connections to the network. We studied how this cost constrain affects the navigation through the system, taking as a basis for comparison the work of Kleinberg for navigation with local knowledge, and our results conserning for navigation with global knowledge.
Um número significativo de redes reais apresentam características espaciais bem definidas. Nós estudamos como topologias de redes espacialmente correlacionadas podem influenciar processos de navegação através das mesmas. Para isso estudamos o comportamento do mínimo caminho médio para redes definidas dentro de modelo de Kleinberg para analisar a navegação ditada por regras de conhecimento global. O modelo que Kleinberg caracteriza-se por permitir conexões de longo alcance entre dois vértices u e v distribuídas por uma distribuição de probabilidade em lei de potência. Para um melhor entendimento das características topológicas apresentadas por essa família de redes, nós aplicamos o modelo epidêmico suscetível-infectado-suscetível (SIS), e com isso verificamos que o modelo de Kleinberg apresenta fenômeno de mundo pequeno apenas para uma determinada faixa de valores assumidos pelo expoente de agregação α. Em seguida, introduzimos um modelo de redes espacialmente embutidas, conceitualmente inspirado no modelo de Kleinberg. Este traduz-se na introdução de um vínculo para a distribuição das conexões de longo alcance. Associamos este vínculo a um possível custo envolvido no processo de adição de novas conexões de longo alcance à rede. Estudamos como esse vínculo no custo afeta a navegação na rede, tendo como base de comparação os trabalhos de Kleinberg para a navegação com conhecimento local da topologia, e nossos resultados considerando a navegação com conhecimento global.
Marzak, Saïd. „Complexes du cuivre (i) construits sur le fragment (ms::(4))**(2-) (m=mo,w) : role du ligand thiocyanate dans l'edification de composes heterometalliques a structure infinie“. Paris 6, 1988. http://www.theses.fr/1988PA066401.
Der volle Inhalt der QuelleRies, Michel. „Synthese et reactivite de clusters heterometalliques contenant le ligand assembleur ph : :(2)pch::(2)pph::(2)“. Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13208.
Der volle Inhalt der QuelleDandache, Abbas Anceau François. „Evaluations électriques et temporelles des PLA complexes (COMPLETE) COMplex PLA Electrical and Temporal Evaluator /“. S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00307779.
Der volle Inhalt der QuelleAntiqueira, Lucas. „Relações da estrutura de redes complexas com as dinâmicas do passeio aleatório, de transporte e de sincronização“. Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-13032012-100543/.
Der volle Inhalt der QuelleThe relationship between structure and dynamics was addressed by employing a wide range of different approaches. First, the correlations between degree and activity were studied in various real-world networks. The activity is defined as the proportion of visits to each node in the steady-state regime of the simple random walk. This type of correlation can provide means to assess node activity only in terms of the degree. The concept of accessibility was included in this analysis, showing an intimate relationship (in networks such as the WWW) between the type of correlation and the level of accessibility observed on nodes. A new complex network model founded on growth was also proposed, with new connections being established proportionally to the current activity of each node. This model can be understood as a generalization of the Barabási-Albert model for directed networks. By using several topological measurements we showed that this new model provides, among several other traditional theoretical types of networks, the greatest compatibility with three real-world cortical networks. Additionally, we developed a novel approach considering non-overlapping subgraphs and their interrelationships and distribution through a given network. The main aspect of the methodology is a novel merging procedure developed to assess the relevance of nodes (in relation to the overall subgraph interconnectivity) lying outside subgraphs. Experiments were carried out on four types of network models and five instances of real-world networks, in order to illustrate the application of the method. Furthermore, these results were related to the properties of the transport and spreading processes. Other topic here addressed is the sampling problem in cortical networks. Effects of sampling were quantified using multivariate analysis and classifiers based on structural network measurements. Samples were also evaluated in terms of their dynamical behavior using a synchronization model and the measure of accessibility. By simulating MEG/EEG recordings it was found that sampled networks may substantially deviate from the respective original networks, mainly for small sample sizes. We also report an analysis of the integrated network of Escherichia coli, which incorporates (i) transcriptional regulatory interactions, (ii) metabolic/signaling feedback and (iii) protein-protein interactions. Network outliers, which represent global transcriptional regulators, were identified in the relationship between out-degree and activity. These outliers are highly and widely expressed across conditions, therefore supporting their global nature in controlling many genes in the cell.
Lugan, Noël. „Clusters du ruthenium a ligands assembleurs : stabilite, reactivite“. Toulouse 3, 1987. http://www.theses.fr/1987TOU30156.
Der volle Inhalt der QuelleGontard, Sébastien. „Courbures de métriques invariantes dans les variétés complexes non compactes“. Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAM027/document.
Der volle Inhalt der QuelleWe study the relationships between geometric properties and metric properties of domains in C^n.More precisely, we are interested in the behavior of holomorphic bisectional curvatures of invariant Kähler metrics, namely the Bergman metric and the Kähler-Einstein metric, near the boundary of bounded pseudoconvex domains with smooth boundary.We prove that at boundary points that are either strictly pseudoconvex or such that the squeezing function of the domain tends to one the holomorphic bisectional curvatures of the Kähler-Einstein metric of the domain tends to the holomorphic bisectional curvatures of the Kähler-Einstein metric of the ball.We also study the holomorphic bisectional curvatures of the Kähler-Einstein metric and of the Bergman metric in some polynomial domains (namely tube and Thullen domains in C^2) which serve as local models at boundary point of finite type. Using these studies we prove that at certain boundary points of smoothly bounded convex domains of finite type there exists a non tangential neighbourhood such the holomorphic bisectional curvatures of the Kähler-Einstein metric are pinched between two negative constants. We also prove that for every smoothly bounded pseudoconvex complete Reinhardt domain of finite type inf C^2 there exists a neighbourhood of the boundary relative to the domain in which the holomorphic bisectional curvatures of the Bergman metric are pinched between two negative constants
Delavaux, Béatrice. „Complexes heterobimetalliques hydrures (ru-m) (m=rh,ir,cu) a ligands bisdiphenylphosphinomethane : synthese et reactivite“. Toulouse 3, 1986. http://www.theses.fr/1986TOU30078.
Der volle Inhalt der QuelleNuel, Didier. „Etude de la reactivite de fragments alkylidynes dans des clusters trinucleaires du fer“. Toulouse 3, 1986. http://www.theses.fr/1986TOU30206.
Der volle Inhalt der QuelleWippler, Jean-Luc. „Une approche paradigmatique de la conception architecturale des systèmes artificiels complexes“. Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX083/document.
Der volle Inhalt der QuelleArchitecting seeks now to be distinct from its original domain, systems engineering, becoming an emergent domain. Far from being recognized as a science or a discipline, its practice is nowadays more and more widespread. However, this practice is still poorly formalized, and insufficiently being taught, lacking a well-established and accessible corpus of knowledge, techniques or approaches.This thesis contributes filling that gap by proposing a paradigm of the architectural design of artificial complex systems. The latter is built based on existing paradigms that are combined, then completed. It aims at providing architects with an effective, even performative framework. It results in an approach of the architectural design structured in four levels.A so-called archetypal level grasps the core principles of any approach of architectural design of artificial complex systems. These principles are derived from various approaches already applied, mainly in the field of system or product design, but also of architectural design of buildings.A so-called general level lies on the principle of a present-future division. In that sense, it differs from engineering approaches that usually rely on a problem-solution dichotomy. It is based on the following main idea: we should consent that when an architect designs, he does not solve problems, but he devises possible and plausible futures, requiring to perceive the present. This vision of the architect's way of working directly impacts the kind of artefacts he handles. We sho how to aggregate these artefacts into models, reflecting either his perception of the present, or his development of futures while progressing through some identified processes.A so-called particular level aims at allowing the storytelling of a given design. To achieve this goal, a notation of the design process is suggested. It lies on some basic mechanisms, one of them being the combination divergence-convergence, called the breathing of the architectural design.At last, a so-called toolbox level, not addressed in this thesis, would consist of various cognitive operations required for the architect in order to accomplish his task of designing (abstraction, questioning, judgement, comparison, decision, etc.)The whole approach is illustrated by an example of an architectural design of a complex system: a Safe City
Reis, Saulo Davi Soares e. „NavegaÃÃo em redes espacialmente correlacionadas“. Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2817.
Der volle Inhalt der QuelleUm nÃmero significativo de redes reais apresentam caracterÃsticas espaciais bem definidas. NÃs estudamos como topologias de redes espacialmente correlacionadas podem influenciar processos de navegaÃÃo atravÃs das mesmas. Para isso estudamos o comportamento do mÃnimo caminho mÃdio para redes definidas dentro de modelo de Kleinberg para analisar a navegaÃÃo ditada por regras de conhecimento global. O modelo que Kleinberg caracteriza-se por permitir conexÃes de longo alcance entre dois vÃrtices u e v distribuÃdas por uma distribuiÃÃo de probabilidade em lei de potÃncia. Para um melhor entendimento das caracterÃsticas topolÃgicas apresentadas por essa famÃlia de redes, nÃs aplicamos o modelo epidÃmico suscetÃvel-infectado-suscetÃvel (SIS), e com isso verificamos que o modelo de Kleinberg apresenta fenÃmeno de mundo pequeno apenas para uma determinada faixa de valores assumidos pelo expoente de agregaÃÃo α. Em seguida, introduzimos um modelo de redes espacialmente embutidas, conceitualmente inspirado no modelo de Kleinberg. Este traduz-se na introduÃÃo de um vÃnculo para a distribuiÃÃo das conexÃes de longo alcance. Associamos este vÃnculo a um possÃvel custo envolvido no processo de adiÃÃo de novas conexÃes de longo alcance à rede. Estudamos como esse vÃnculo no custo afeta a navegaÃÃo na rede, tendo como base de comparaÃÃo os trabalhos de Kleinberg para a navegaÃÃo com conhecimento local da topologia, e nossos resultados considerando a navegaÃÃo com conhecimento global.
A significant number of real networks have well-defined spatial characteristics. We studied how network with spatially correlated topolgies can influence the processes of navigation through them. For this, we study the behavior of the average shortest-path length to networks defined within Kleinbergâs model [1, 2] to analyze the navigation dictated by rules of global knowledge. The Kleinbergâs model is characterized by allowing long-range connections between two vertices u and v distributed by a power-law probability distribution. For a better understanding of the topological characteristics presented by this family of networks, we applied the epidemic model susceptible-infected-susceptible (SIS) and we found that, we see that the Kleinbergâs model presents the small-world phenomenon only for a certain range of values of the clustering exponent α. We introduced a model of spatially embedded networks, conceptually based on the Kleinbergâs model. This model consist in introduction of a constrain to the distribution of long-range connections. We associate his constrain to a possible cost involved in the process of adding new long-range connections to the network. We studied how this cost constrain affects the navigation through the system, taking as a basis for comparison the work of Kleinberg for navigation with local knowledge, and our results conserning for navigation with global knowledge.
Silva, Filipi Nascimento. „Redes complexas: novas metodologias e modelagem de aquisição de conhecimento“. Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-15032010-105321/.
Der volle Inhalt der QuelleStudies of complex networks have gained increasing research interest in recent years, in part due to its potential for simple representation of complex systems in various fields of science. The needs of quantitative models representing observed phenomena, as well the development of methods for the characterization of complex networks, is a essential matter for the development and understanding of scientific researches exploring such structures. This work aims to develop and study some new methods for the characterization of complex networks, exploring them in the context of knowledge modeling. Initially, two complex networks were developed, a collaborative network of researchers from the Universidade de Sao Paulo and the other obtained from the database of Wikip´edia articles, considering only those strict related to mathematical theorems. The recently formalized concentric measurements are explored and applied to the described networks, as well to other several theoretical models, providing much more information about the topology of these networks than by the use of traditional measurements. Even more interesting results are obtained by the characterization of the vertices of the collaboration network, which reveal patterns of interdisciplinarity among the many fields of science. A model of knowledge acquisition has also been proposed by the use of simulations of multiple interacting agents walking through a complex network in self-avoiding trajectories. Results of those simulations, performed for the network of Wikipedia and other theoretical models shows that certain sets of parameters and networks perform better in the acquisition of knowledge, through the network of theorems presenting the worst of them. However, unlike what should be expected on the basis of intuition, the agents memories do not play much influence to the speed of acquisition of knowledge. The agent access frequencies of vertices was also been obtained and explored superficially in order to determine where the agents walk more ofen. Several softwares had been developed in this masters thesis project, among these, there is a complex network computational visualization tool, which had become indispensable for the many analysis of the contributions obtained by the use of the other described properties.
Avelar, Clodoaldo Bevilaqua. „O fascinante mundo dos números complexos“. Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/55/55136/tde-16012017-153650/.
Der volle Inhalt der QuelleThis dissertation asserts on the set of complex numbers and brief introduction on Differential Calculus to one Complex Variable Functions. As didactic proposal we present an activity involving complex numbers and geometry that may be applied to teachers in high school level.
Dias, Eduardo de Souza. „Estudo do risco sistêmico em redes interbancárias pela abordagem de sistemas complexos“. Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/100/100132/tde-05012016-225818/.
Der volle Inhalt der QuelleEconomic and financial studies have been changing and searching new methodologies. Since the 2008 subprime crisis, which spread into economies around the globe, new discussions on how it could have been prevented, and paths which countries should follow to emerge from stagflation have been discussed by the academic world towards the complexity subject. In economic terms, some of the criticism of neoclassic economics, mainly due to excessive constrains used by its models, can now be eased, one by one, through agent based modeling. Regarding financial risk understanding and control, complex networks assume fundamental distinction. Models applied so far in financial market risk control dont consider global risk, but only the local one. Many theories on risk diversification are accepted and indeed produce more stable systems, although with little resilience, which means smaller number of crisis, but when it does occur, are more serious ones. This paper suggested an agent based model, using a simple economic system capable of generating crisis. This model was constituted by firms and stochastic demand, using banks to simulate the financial market. These banks were connected though a banking network. In order to test systemic risk, the model performed three tests. First, the maximum leverage allowed was increased and banks were able to achieve higher profits and growth, but from a certain level, the system collapsed with frequent crisis. Second, the average connectivity was increased and banks obtained higher profits, however with more severe crisis. Finally, increasing banking network cluster index, similarly to the first two tests, banks achieved higher growth, but without the undesirable effects caused by risk increase.
Labonnette, Daniel. „Etude des especes du vanadium iv en milieu faiblement acide et alcalin : isopolyanions mixtes mo**(vi)-v**(iv), complexes carbonates de v**(iv)“. Orléans, 1987. http://www.theses.fr/1987ORLE2009.
Der volle Inhalt der QuellePisanty, Alatorre Emilio. „Electron dynamics in complex time and complex space“. Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/43538.
Der volle Inhalt der QuelleHolder, Alexander Joseph. „Experimental studies of complex fluids in complex flows“. Thesis, Swansea University, 2014. https://cronfa.swan.ac.uk/Record/cronfa42995.
Der volle Inhalt der QuelleTa, The Anh. „Topics in Complex and CR geometry“. Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASM007.
Der volle Inhalt der QuelleThis memoir contains research results in complex geometry and CR geometry. The topics include degree bounds for hypersurfaces in Kobayashi hyperbolicity related problems, equivalence problems and construction of normal forms for certain classes of Levi degenerate 5-dimensional hypersurfaces in complex spaces and investigations on the vanishing locus of Cartan CR curvatures on boundaries of some 3-dimensional CR manifolds. The common theme is the use of higher jets in diverse geometric situations to investigate invariants of geometric objects, and the extensive use of symbolic computational programs to help with complicated calculations
Rocha, Luis Enrique Correa da. „Redes acopladas: estrutura e dinâmica“. Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-11092007-183106/.
Der volle Inhalt der QuelleComplex network theory has become very popular because of its interdisciplinarity, conceptual simplicity and wide applicability to model real systems. Although fast growing, there is a number of problems which have not been addressed by using complex networks. For example, few efforts have been directed to systems involving coupling and interaction between different complex networks. In the following monography, we present two fundamental contributions in the study of such systems. The first consists in a model which describes the interaction dynamics between a mass pattern evolving in a regular network with a complex network, which are expected to control the pattern evolution. As soon as a complex network node is activated by the regular network, it requests help from its topological neighbours and activates them. The activation is triggered when the mass concentration overcomes a threshold in the node position and consists in liberating an opposite diffusion intended to eliminate the original pattern. The dynamics is completely related to the structure of the control network. The existence of hubs in the Barabási-Albert model plays a fundamental role to accelerate the opposite mass generation. Conversely, the uniform distribution of neighbours in the Erdös-Rényi network provided an increase in the efficiency when several focuses of the original pattern were distributed in the regular network. The second contribution consists in a model based on interactions between two species (predator and prey) provided by sensitive fields which depends of the Euclidean distance between two agents and on their respective types. Spatio-temporal patterns emerge in the system which are directly related to the attraction intensity between same species agents. To understand the dynamics evolution and quantify the information transfer through different clusters, we built two complex networks where the nodes represent the agents. In the first network, the edge weight is given by the Euclidean distance between two agents and, in the second network, by the amount of time two agents become close one another. By following a merging process, another network is obtained whose nodes correspond to spatial groups defined by a weight thresholding process in the first network. Some configurations favor the preys survival, while predators efficiency are improved by other ones.
Paula, Demétrius Ribeiro de. „Dinâmica de redes neurais e formação de agregados em redes complexas“. reponame:Repositório Institucional da UFC, 2006. http://www.repositorio.ufc.br/handle/riufc/9649.
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The process by which news trends and ideas propagate in social communities can have a profound impact in the life of individuals. To understand thi process, we introduce a competitive cluster growth model in complex networks. In our model, each cluster represents the set of individuals with a certain opinion or preference. We investigate how the cluster size distribution depends on the topology of the network and how it is affected by the number of initial seeds dispersed in the structure. We study our model using different network models, namely, the Erdos-Renyi geometry, the preferential attachment model, and the so-called Apollonian network. This last complex geometry displays a cluster size distribution that follows a power-law with an exponent 1.0. Similar results have been obtained for the distributions of number of votes per candidate in the proportional elections for federal representation in Brazil. In the second part of this work, we investigate the temporal behavior of neural networks with small world topology and in networks built according to the preferential attachment model. In the first case we study the effect of the range of connections on the behavior of the time series. In both topologies, we detect the existence of cycles and investigate how their periods depend on the size of the system.
Este dissertação foi dividida em duas partes, na primeira parte nós propomos um modelo de crescimento competitivo de gregados em redes complexas para simular a propagação de idéias ou opiniões em comunidades. Investigamos como as distribuições de tamanhos de agregados variam com a topologia de construção da rede e com o número de sementes aleatoriamente dispersas na estrutura. Para tal, analisamos redes do tipo de Erdos-Rényi, redes de contato preferencial e a chamada rede Apoloniana. Esta última apresenta distribuições de tamanho de agregado em forma de uma lei de potência com um expoente aproximadamente 1. Resultados similares são observados com as distribuições obtidas para as frações de votos por candidato às eleições proporcionais para deputados no Brasil. Na segunda parte, analisamos o comportamento temporal da atividade neural em redes com características de mundo pequeno e em redes construídas segundo o modelo do contato preferencial. Nesta primeira topologia, estudamos como a série temporal se comporta com a variação do alcance das conexões. Em ambas as topologias, observamos a formação de períodos e investigamos como estes variam com o tamanho da rede.
Tahiri, Mohamed. „Phtalocyanines de fer(i) et de fer(0) : synthese, structure et reactivite“. Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13043.
Der volle Inhalt der QuelleVisweshwaran, Sai Prasanna. „The role of a trimeric coiled coil protein in WASH complex assembly“. Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS291/document.
Der volle Inhalt der QuelleThe Arp2/3 complex generates branched actin networks, which produces a pushing force that helps the cell to remodel its membranes. The WASH complex activates the Arp2/3 complex at the surface of endosomes and thereby, facilitates the membrane scission of the transport intermediates containing internalized receptors such as α5β1 integrins. Hence, by promoting integrin recycling, the WASH complex plays a crucial role in tumor cell invasion during cancer progression. However, how cells assemble the WASH complex at first is unknown. Here we report the identification of the first assembly factor of the WASH complex. We identified HSBP1 in a proteomics screen for proteins binding to precursor forms of subunits, but not to the fully assembled WASH complex. Through biochemical reconstitution and molecular modeling, we found that HSBP1 associates with the precursor CCDC53 trimer, dissociates it and forms a heterotrimer that will eventually contribute a single CCDC53 molecule to the assembling WASH complex. The role of HSBP1 in WASH complex assembly is well conserved since WASH is similarly destabilized upon HSBP1 knock-down in mammalian cells or upon HSBP1 knock-out in Dictyostelium amoeba. In line with the defective assembly of the WASH complex, the HSBP1 knock-out closely phenocopies WASH knock-out in amoeba. In human mammary carcinoma cells, HSBP1 depletion results in impaired integrin recycling to the plasma membrane leading to the defective development of focal adhesions and reduced invasion abilities. Moreover, HSBP1 was found to localize at the centrosome and was required for the polarization associated with the migration. On the other end, in mammary breast tumors, we found that HSBP1 was often overexpressed and that its overexpression was associated with increased levels of the WASH complex and with poor prognosis for breast cancer patients. Hence, HSBP1 is a conserved assembly factor that controls the levels of the WASH complex
Kleineberg, Kaj Kolja. „Evolution and ecology of the digital world: A complex systems perspective“. Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/400404.
Der volle Inhalt der QuelleEsta tesis está dedicada a los retos de un mundo interconectado que ha emergido a partir de la reciente revolución digital en el que servicios digitales se desarrollan y compiten en la ausencia de control central. Por tanto, herramientas, ideas y técnicas de análisis de sistemas complejos son útiles y especialmente adecuadas para describir la evolución y competencia entre redes sociales online. El éxito del Internet ha conectado individuos a escalas sin precedentes y la Web 2.0 promociona hoy en día colaboración global y el intercambio de ideas casi instantáneo. Sin embargo, la dominación de unos pocos poderosos monopolios de información representa un peligro para la libertad de ideas y decisiones de individuos. Por tanto, dos factores son esenciales para un futuro próspero en la era digital: diversidad digital y decentralización. En cuanto al primero, hemos introducido modelos basados en observaciones empíricas que permiten entender mejor la dinámica y las interacciones competitivas de las redes sociales online, los sistemas claves en el cosmos de la Web 2.0. En particular, nuestros descubrimientos revelan las condiciones en las cuales la diversidad digital se puede sostener. Con respecto al segundo, el diseño de arquitecturas descentralizadas contiene retos específicos, entre los que nos dirigimos especialmente a la búsqueda y navegación basada exclusivamente en conocimiento local. Hemos revelado en qué condiciones la existencia de muchas redes interaccionando facilita estas tareas. Afortunadamente, muchos sistemas reales cumplen estas condiciones. Para concluir, desde una perspectiva a nivel de sistema, un futuro próspero en el mundo digital compuesto por un paisaje digital diverso con arquitecturas descentralizadas en constante interacción es posible, pero no seguro. En esta situación, la conciencia, así como la creación de los incentivos adecuados, son retos importantes que nuestra sociedad debe afrontar. Crear conciencia suficiente e incentivos correctos para crear ese futuro sigue siendo un reto para la sociedad.
Paula, DemÃtrius Ribeiro de. „Dynamics of neural networks and cluster growth in complex networks“. Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=206.
Der volle Inhalt der QuelleEste dissertaÃÃo foi dividida em duas partes, na primeira parte nÃs propomos um modelo de crescimento competitivo de gregados em redes complexas para simular a propagaÃÃo de idÃias ou opiniÃes em comunidades. Investigamos como as distribuiÃÃes de tamanhos de agregados variam com a topologia de construÃÃo da rede e com o nÃmero de sementes aleatoriamente dispersas na estrutura. Para tal, analisamos redes do tipo de Erdos-RÃnyi, redes de contato preferencial e a chamada rede Apoloniana. Esta Ãltima apresenta distribuiÃÃes de tamanho de agregado em forma de uma lei de potÃncia com um expoente aproximadamente 1. Resultados similares sÃo observados com as distribuiÃÃes obtidas para as fraÃÃes de votos por candidato Ãs eleiÃÃes proporcionais para deputados no Brasil. Na segunda parte, analisamos o comportamento temporal da atividade neural em redes com caracterÃsticas de mundo pequeno e em redes construÃdas segundo o modelo do contato preferencial. Nesta primeira topologia, estudamos como a sÃrie temporal se comporta com a variaÃÃo do alcance das conexÃes. Em ambas as topologias, observamos a formaÃÃo de perÃodos e investigamos como estes variam com o tamanho da rede.
The process by which news trends and ideas propagate in social communities can have a profound impact in the life of individuals. To understand thi process, we introduce a competitive cluster growth model in complex networks. In our model, each cluster represents the set of individuals with a certain opinion or preference. We investigate how the cluster size distribution depends on the topology of the network and how it is affected by the number of initial seeds dispersed in the structure. We study our model using different network models, namely, the Erdos-Renyi geometry, the preferential attachment model, and the so-called Apollonian network. This last complex geometry displays a cluster size distribution that follows a power-law with an exponent 1.0. Similar results have been obtained for the distributions of number of votes per candidate in the proportional elections for federal representation in Brazil. In the second part of this work, we investigate the temporal behavior of neural networks with small world topology and in networks built according to the preferential attachment model. In the first case we study the effect of the range of connections on the behavior of the time series. In both topologies, we detect the existence of cycles and investigate how their periods depend on the size of the system.
Roberts, James Scott. „Suspended complex“. Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/45217.
Der volle Inhalt der QuelleMaster of Architecture
GU, JIN. „Game Complex“. Thesis, KTH, Arkitektur, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277849.
Der volle Inhalt der QuelleLi, Ji. „Ribbon Complex“. Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/46331.
Der volle Inhalt der QuelleMaster of Architecture
Dublin, Marina. „Complex Simplicity“. VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/2962.
Der volle Inhalt der QuelleHenderson, Michael E. Keller Herbert Bishop Keller Herbert Bishop. „Complex bifurcation /“. Diss., Pasadena, Calif. : California Institute of Technology, 1985. http://resolver.caltech.edu/CaltechETD:etd-03262008-112516.
Der volle Inhalt der QuelleHenry, Marc. „Application du concept d'electronegativite aux processus d'hydrolyse et de condensation en chimie minerale“. Paris 6, 1988. http://www.theses.fr/1988PA066293.
Der volle Inhalt der QuelleDeforzh, Evgeny. „Le complexe IMP3 protège ses ARNm cibles de la répression traductionnelle dépendante de Argonaute/GW182/miRNA“. Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS203/document.
Der volle Inhalt der QuelleRNA-binding proteins of the IMP family (IGF2 mRNA-binding proteins 1-3) are conserved oncofetal proteins, regulating transport, stability and decay of multiple mRNAs. IMPs are involved in embryonic developement and tumorigenesis by controlling cell proliferation, differentation, migration, polarization and many other important aspects of cell function. IMP-3 is hardly detectable in normal adult tissues, but is overexpressed in many cancers, where it has been reported as a marker of tumor aggressiveness, rapid growth, and bad prognosis for patients. In our research we utilized a rhabdomyosarcoma (RMS) cell line RD, where IMPs were first described as IGF-2 mRNA regulating proteins. We aimed to elucidate the mechanism by which IMP3 regulates the expression of cyclins D1 and D3, thereby contributing to the understanding of oncogenic processes in RMS.In this study, we show that IMP3 regulates the expression of cyclin D1 and D3 in a significant manner in vivo. We also demonstrate that in the absence of IMP3, the mRNAs of the cyclins are exported to the cytoplasm and associated with polyribosomes, but not translated. IMP3 inhibition does not influence the stability of cyclin mRNAs. We demonstrate that in human cancer cells, IMP3 interacts with multiple RNA-binding proteins, and that a number of these IMP-3 partners impacts on the expression of cyclins D1 and D3. These observations suggest the existence of a regulatory IMP-3 containing RNP complex on the 3’UTR of mRNAs of cyclin D1 and D3. Our results show that an inhibition of two key proteins of RNA-induced silencing complex (RISC) (AGO2 and GW182/TNRC6) rescues the expression of cyclin D1 and D3 proteins, which is significantly decreased in the absence of IMP3 or its protein partners ILF3/NF90 and PTBP1. Therefore, IMP3 and RISC complexes can compete for cyclin mRNAs translational repression/activation. We also identified a number of miRNAs that can be involved in this process, and characterized functionally important regions within 3’ UTRs of the cyclins, where the competition between IMP-3 and RISC complexes takes place. Our results are consistent with the existence of IMP3 - containing multiprotein complex, which is associated with 3’UTRs of the cyclins and regulates their translation by protecting them from miRISC-dependent translational repression
Gomes, de Lima Bernardes Miriam. „Réactivité de complexes organométalliques mono- et dinucléaires : synthèse de thiolato-composés du molybdène, du tungstène et du cobalt : étude de la formation de liaisons c-c dans la sphère de coordination du métal“. Brest, 1986. http://www.theses.fr/1986BRES2008.
Der volle Inhalt der QuelleReis, Elohim Fonseca dos 1984. „Criticality in neural networks = Criticalidade em redes neurais“. [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276917.
Der volle Inhalt der QuelleDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin
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Resumo: Este trabalho é dividido em duas partes. Na primeira parte, uma rede de correlação é construída baseada em um modelo de Ising em diferentes temperaturas, crítica, subcrítica e supercrítica, usando um algorítimo de Metropolis Monte-Carlo com dinâmica de \textit{single-spin-flip}. Este modelo teórico é comparado com uma rede do cérebro construída a partir de correlações das séries temporais do sinal BOLD de fMRI de regiões do cérebro. Medidas de rede, como coeficiente de aglomeração, mínimo caminho médio e distribuição de grau são analisadas. As mesmas medidas de rede são calculadas para a rede obtida pelas correlações das séries temporais dos spins no modelo de Ising. Os resultados da rede cerebral são melhor explicados pelo modelo teórico na temperatura crítica, sugerindo aspectos de criticalidade na dinâmica cerebral. Na segunda parte, é estudada a dinâmica temporal da atividade de um população neural, ou seja, a atividade de células ganglionares da retina gravadas em uma matriz de multi-eletrodos. Vários estudos têm focado em descrever a atividade de redes neurais usando modelos de Ising com desordem, não dando atenção à estrutura dinâmica. Tratando o tempo como uma dimensão extra do sistema, a dinâmica temporal da atividade da população neural é modelada. O princípio de máxima entropia é usado para construir um modelo de Ising com interação entre pares das atividades de diferentes neurônios em tempos diferentes. O ajuste do modelo é feito com uma combinação de amostragem de Monte-Carlo e método do gradiente descendente. O sistema é caracterizado pelos parâmetros aprendidos, questões como balanço detalhado e reversibilidade temporal são analisadas e variáveis termodinâmicas, como o calor específico, podem ser calculadas para estudar aspectos de criticalidade
Abstract: This work is divided in two parts. In the first part, a correlation network is build based on an Ising model at different temperatures, critical, subcritical and supercritical, using a Metropolis Monte-Carlo algorithm with single-spin-flip dynamics. This theoretical model is compared with a brain network built from the correlations of BOLD fMRI temporal series of brain regions activity. Network measures, such as clustering coefficient, average shortest path length and degree distributions are analysed. The same network measures are calculated to the network obtained from the time series correlations of the spins in the Ising model. The results from the brain network are better explained by the theoretical model at the critical temperature, suggesting critical aspects in the brain dynamics. In the second part, the temporal dynamics of the activity of a neuron population, that is, the activity of retinal ganglion cells recorded in a multi-electrode array was studied. Many studies have focused on describing the activity of neural networks using disordered Ising models, with no regard to the dynamic nature. Treating time as an extra dimension of the system, the temporal dynamics of the activity of the neuron population is modeled. The maximum entropy principle approach is used to build an Ising model with pairwise interactions between the activities of different neurons at different times. Model fitting is performed by a combination of Metropolis Monte Carlo sampling with gradient descent methods. The system is characterized by the learned parameters, questions like detailed balance and time reversibility are analysed and thermodynamic variables, such as specific heat, can be calculated to study critical aspects
Mestrado
Física
Mestre em Física
2013/25361-6
FAPESP
Brown, James Ryan. „Complex and almost-complex structures on six dimensional manifolds“. Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4466.
Der volle Inhalt der QuelleThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 26, 2007) Vita. Includes bibliographical references.
Duvefelt, Sabine, und Carolina Sjölander. „Multiple Discrimination : Addressing Complex Discrimination in a Complex Society“. Thesis, Örebro University, Department of Behavioural, Social and Legal Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-1912.
Der volle Inhalt der QuelleAbstract
This thesis show how the European Community, through legislation and case law, is addressing the problem of multiple discrimination and what the possible solutions to it are.
Multiple discrimination describes a situation where an individual experiences discrimination on more than one ground. This can occur in two different ways; additive or intersectional. Additive discrimination describes a situation where an individual is discriminated against on more than one ground and these grounds are added on top of each other. Intersectional discrimination explains how an individual’s multiple identities may be the cause of discrimination in such a way that the grounds for discrimination cannot be considered separately.
Expanding the list of grounds in Article 13 EC could help multiple discrimination claims but cannot be seen as the exclusive solution to such a complex problem. Many more problems surround multiple discrimination claims. One is to find an adequate comparator in order to prove discrimination. Another is that the case law shows a higher rate of success for plaintiffs claiming only one ground of discrimination even if they have experienced multiple discrimination, causing a disparity between the facts of the case and the reality experienced by the plaintiffs.
In conclusion, such a complex matter cannot be solved by one simple solution but the Community would benefit from an explicit prohibition as well as a common definition of multiple discrimination.
Kandaiah, Nishani. „Flow splitting of rheologically complex fluids under complex conditions“. Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412537.
Der volle Inhalt der QuelleAzevedo, Laura Rosa Kugler de [UNESP]. „Informação, ação e relações colaborativas: uma perspectiva filosófica da complexidade“. Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/145531.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A presente dissertação intitulada “Informação, ação e relações colaborativas: uma perspectiva filosófica da complexidade” tem por objetivo realizar um estudo de hipóteses do paradigma da complexidade envolvendo a comunicação entre seres humanos. O problema central que direciona a presente reflexão pode ser assim enunciado: Qual é o papel dos padrões informacionais na ação colaborativa dos seres humanos, concebidos como sistemas complexos? Esse problema será inicialmente analisado a partir da hipótese elaborada por Bateson, segundo a qual relações de dependência se estabelecem entre seres vivos, criando vínculos específicos e dinâmicos entre eles quando há reciprocidade em suas relações. Recorremos também às hipóteses formuladas por Weaver em 1948 sobre a natureza de problemas característicos do domínio da complexidade. O presente trabalho está organizado em três capítulos. No primeiro, investigamos aspectos da Teoria dos Sistemas Complexos que nos auxiliam a analisar o conceito de Informação, com ênfase na noção de Padrões Informacionais. No capítulo 2, investigamos a Virada Naturalista na filosofia e a importância da experiência para a filosofia, que passou a ganhar espaço com essa Virada, proporcionada pela revolução iniciada por Darwin na biologia. As noções de Padrões Informacionais e de Duplo-Vínculo são apresentadas no capítulo 2, que tem como ponto fundamental o estudo da relação comunicativa entre seres vivos. No capítulo 3, analisamos hipóteses de teorias que explicitam relações de amizade, presenciais e virtuais, entre pessoas, focalizando o estudo de relações colaborativas propiciadas pelo estabelecimento de padrões informacionais.
This dissertation, entitled “Information, action and collaborative relationships: a philosophical perspective of complexity” aims to conduct a study of hypotheses of the complexity paradigm involving communication between humans. The central problem that directs this reflection can be so stated: What is the role of informational patterns in the collaborative action of human beings, conceived as complex systems? This problem will be initially analyzed from the hypothesis elaborated by Bateson, according to which dependency relationships are established between living beings, creating specific and dynamic links between them when there is reciprocity in their relationships. We also investigate the assumptions made by Weaver in 1948 about the nature of problems dealing with complexity. This dissertation is organized into three chapters. In the first one, we investigated aspects of the Theory of Complex Systems that help us to analyze the concept of Information, emphasizing the notion of Informational Patterns. In chapter 2, we investigate the Naturalistic Turn in philosophy and the importance of experience to philosophy, which went on to gain space with this Turn, provided by the revolution initiated by Darwin in biology. The notions of Informational Patterns and Double-Bind are presented in the chapter 2 that presents the result of a study of the communicative relationship between living beings. In chapter 3, we analyze assumptions of theories that explain relations of friendship and virtual friendship between people, focusing on the study of collaborative relationships offered by the establishment of informational patterns.
Mammass, Driss. „Sur le theoreme de polya-carlson concernant les series de puissances a coefficients entiers dans c**(n)“. Toulouse 3, 1988. http://www.theses.fr/1988TOU30097.
Der volle Inhalt der QuelleBennegueouche, Souad. „Invariance de certaines inegalites polynomicales harmoniques par rapport aux applications holomorphes“. Toulouse 3, 1989. http://www.theses.fr/1989TOU30013.
Der volle Inhalt der QuelleGutierrez, Guillen Gabriela. „Qualitative study of physical phenomena through geometry of complex foliations“. Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK012.
Der volle Inhalt der QuelleThrough an in-depth exploration of the underlying geometry, we provide a full mathematical description of the tennis racket effect, which is a geometric phenomenon observed in free rotational dynamics of rigid bodies. We examine the existence, origin, and robustness of this effect using the interplay between complex and real geometries. We also detect signatures of physical constraints on the moments of inertia of the body, in the geometric structure of the tennis racket effect. The analysis is extended to closely related phenomena such as the Dhzanibekov effect, the monster flip, and the Montgomery phase.The second part of the thesis focuses on Hamiltonian monodromy, which is the simplest topological obstruction to the existence of global action-angle coordinates for a completely integrable system. We show that the use of spectral Lax pairs provides a complex geometric structure that enables the study of Hamiltonian monodromy and the calculation of the corresponding monodromy matrix.Throughout this research work, we adopt a general framework that employs complex foliations to provide a geometric structure for the problems under study, leading to a deeper understanding of these phenomena
Santos, Marcus Vinicio de Jesus. „Transformação de Möbius“. Universidade Federal de Sergipe, 2016. https://ri.ufs.br/handle/riufs/6499.
Der volle Inhalt der QuelleO objetivo deste trabalho é estudar transformações de Möbius arbitrárias por meio de transformações complexas mais simples, a saber: a Translação, a Rotação, a Homotetia (Contração e Dilatação) e a Inversão. Os resultados obtidos foram aplicados em círculos e retas. No final, damos a alternativa de estudar transformações de Möbius via matrizes.
EL, AMOURI HANZ. „Synthese et reactivite catalytique de composes homo- et heterobinucleaires“. Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13156.
Der volle Inhalt der QuelleZhu, C. Z. „Some results in complex approximation with sequences of complex exponents“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ39903.pdf.
Der volle Inhalt der QuelleZhang, Xiangwen. „Complex Monge-Ampere equation and its applications in complex geometry“. Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107800.
Der volle Inhalt der QuelleDans cette thèse, il est question de l'étude des équations de type Monge-Ampère complexes. On y présente une analyse basée sur les différentes techniques utilisées dans la théorie des équations aux dérivées partielles ainsi que certaines applications géométriques. En premier lieu, nous présentons l'estimation à priori des équations de type Hessienne complexes sur des variétés hermitiennes. Ces estimations sont indispensables à la résolution de ces équations par le biais des méthodes de continuité. Au fait, nous établirons des estimations sur la première et la seconde dérivée des équations Monge-Ampère complexes de la même manière faite par Yau sur les variétés kählériennes.Au troisième chapitre, nous étudions la régularité de Hölder intérieure des dérivées secondes de la solution pour les équations de type Monge-Ampère complexes. De plus, en visant la généralisation de ce type de résultats de régularité à des géométries plus généralee, on a obtenu une estimation de deuxième ordre de type Bedford-Taylor classique et une version locale des estimations de Calabi de troisième ordre sur des variétés hermitiennes. Les deux derniers chapitres de cette thèse sont consacrés aux problèmes géométriques reliés aux équations de type Monge-Ampère complexes. Nous donnons quelques résultats sur la représentation non négative pour la classe de frontière du cône de Kähler et l'existence des métriques généralisée Kähler-Einstein.
James, Eric. „The NGO-Military Complex and the Complex Emergency in Afghanistan“. Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509051.
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