Дисертації з теми "Partition plan"

Cette thèse se compose de trois parties. La première partie est consacrée aux partitions planes cylindriques, la deuxième aux lambda-déterminants et enfin la troisième aux commutateurs dans les systèmes semi-circulaires. La classe des partitions planes cylindriques est une généralisation naturelle de celle des partitions planes inverses. Borodin a donnée récemment une série génératrice pour les partitions planes cylindriques. Notre premier résultat est une preuve bijective de cette identité utilisant les diagrammes de croissance de Fomin for la correspondance RSK généralisée. Le deuxième résultat est un (q, t)-analogue de la formule de Borodin, qui généralise un résultat d'Okada. Enfin le troisième résultat de la première partie est une description combinatoire explicite du poids de Macdonald intervenant dans cette formule, qui utilise un modèle de chemins non-intersectant pour les partitions planes cylindriques. Les matrices à signes alternants ont ́été découvertes par Robbins et Rumsey alors qu’ils étudiaient les λ-déterminants. Dans la deuxième partie de cette thèse nous démontrons une généralisation à plusieurs paramètres de ce λ-déterminant, généralisant un résultat récent de di Francesco. Comme le λ-déterminant, notre formule est un exemple du phénomène de Laurent. Les systèmes semi-circulaires ont ́été introduits par Voiculescu afin d' ́étudier les algèbres de von Neumann des groupes libres. Dans la troisième partie de la thèse, nous étudions les commutateurs dans l'algèbre engendré par un système semi-circulaire. Nous avons mis en ́évidence une matrice possédant une structure auto-similaire intéressante, qui nous permet de donner une formule explicite pour la projection sur l'espace des commutateurs de degré donnée. En utilisant cette expression, nous donnons une preuve simple du fait que les systèmes semi-circulaires engendrent des facteurs
This thesis is divided into three parts. The first part deals with cylindric plane partitions. The second with lambda-determinants and the third with commutators in semi-circular systems. Cylindric plane partitions may be thought of as a natural generalization of reverse plane partitions. A generating series for the enumeration of cylindric plane partitions was recently given by Borodin. The first result of section one is a new bijective proof of Borodin's identity which makes use of Fomin's growth diagram framework for generalized RSK correspondences. The second result is a (q, t)-analog of Borodin's identity which extends previous work by Okada in the reverse plane partition case. The third result is an explicit combinatorial interpretation of the Macdonald weight occuring in the(q, t)-analog using the non-intersecting lattice path model for cylindric plane partitions. Alternating sign matrices were discovered by Robbins and Rumsey whilst studying λ-determinants. In the second part of this thesis we prove a multi-parameter generalization of the λ-determinant, generalizing a recent result by di Francesco. Like the original λ-determinant, our formula exhibits the Laurent phenomenon. Semicircular systems were first introduced by Voiculescu as a part of his study of von Neumann algebras. In the third part of this thesis we study certain commutator sub algebras of the semicircular system. We find a projection matrix with an interesting self-similar structure. Making use of our projection formula we given an alternative, elementary proof that the semicircular system is a factor

Subject of this diploma thesis is the construction and technological solutions to the main building of biotechnology and biomedicine centre in Vestec. The aim of a thesis is to propose time, technical and technological construction processes of construction. The content of a thesis is the project of site equipment, time and financial plan of construction, assembly machines, studies of realization main technological phase, inspection and test plan for plasterboard partition, technological regulations for plasterboard partition, metal facade and contact insulation system ETICS.

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mathematics, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 235-239).
We present a collection of results about the scaling limits of several models from integrable probability. Our first result concerns the asymptotic behavior of the bottom slice of a Hall-Littlewood random plane partition. We show the latter concentrates around a limit shape and in two different scaling regimes identify the fluctuations around this shape with the GUE Tracy- Widom distribution and the narrow wedge initial data solution to the Kardar-Parisi-Zhang (KPZ) equation. The second result concerns the limiting behavior of a class of six-vertex models in the quadrant, and we obtain the GUE-corners process as a scaling limit for this class near the boundary. Our final result, joint with Ivan Corwin, demonstrates the (long predicted) transversal 2/3 critical exponent for the height functions of the stochastic sixvertex model and asymmetric simple exclusion process (ASEP). The algebraic parts of our arguments involve the construction and use of degenerations and modifications of the Macdonald difference operators to obtain rich families of observables for the models we consider. These formulas are in terms of multiple contour integrals and provide a direct access to quantities of interest. The analytic parts of our arguments include the detailed asymptotic analysis of Fredholm determinants and contour integrals through steepest descent methods. An important aspect of our approach, is the combination of exact formulas with more probabilistic arguments, based on various Gibbs properties enjoyed by the models we study.
by Evgeni Dimitrov.
Ph. D.

Redes Definidas por Software ajudam a simplificar a programabilidade da rede ao desacoplar o plano de controle dos dispositivos de encaminhamento, e implementá-lo em um controlador logicamente centralizado. Apesar de permitir uma separação de conceitos mais clara, essa característica cria também uma relação de dependência entre controlador e dispositivos. Falhas no plano de controle prejudicam a visibilidade do estado da rede no controlador e podem tornar a rede inutilizável caso os dispositivos de encaminhamento sejam isolados. A relevância deste problema motivou uma série de propostas, incluindo a distribuição física de instâncias de controle e a delegação de tarefas aos dispositivos de encaminhamento. Esta dissertação contém a proposta e a avaliação de uma arquitetura que usa redes celulares de dados (4G) como enlaces reservas para o plano de controle. Nenhum trabalho anterior explorou esta ideia, apesar da pesquisa recente envolvendo Redes Definidas por Software e redes sem fio. A avaliação experimental permite uma melhor compreensão ao responder três perguntas: (i) Como o comportamento do tráfego do plano de controle é afetado pelas características de enlaces celulares, (ii) quão rapidamente o plano de controle é migrado para o enlace reserva quando uma falha ocorre e (iii) como funções de rede que dependem do estado da rede em um instante se comportam em tal arquitetura. Apesar da já esperada maior latência dos enlaces celulares, esta arquitetura mantém o funcionamento parcial de tarefas que dependem de visão global da rede quando falhas ocorrem nos enlaces primários, de maneira simples e com custo acessível. O grau de manutenção de tais tarefas é diretamente relacionado com sua dependência da rapidez de reação do plano de controle a eventos de rede. O principal benefício de prevenir a partição do plano de controle é a manutenção de uma visão global consistente da rede.
Software Defined Networks simplify network programmability by detaching the control plane from forwarding devices and deploying it into a logically centralized controller. While this allows a clearer separation of concerns, it also creates a dependency between them. Failures in the control plane break the controller view of the network state and could render the network unusable if forwarding devices cannot be reached. The relevance of this problem has led to a range of proposals, including physical distribution of controller instances and delegation of concerns to forwarding devices. This dissertation features the proposal and evaluation of an architecture that leverages cellular data networks (4G) as control plane backup links. No previous work has explored this idea, despite the recent research intersecting SDN and wireless networks. The experimental evaluation provides insights towards answering three research questions: (i) How is the behavior of control plane traffic affected by the characteristics of cellular links, (ii) how quickly is the control plane handed over to the backup link when a failure occurs and (iii) how well do network functions that rely on a snapshot of the network state behave on such an architecture. Despite the expected higher latency of cellular links, this architecture maintains partial functionality of tasks that depend on global network awareness when failures occur in primary control links in a simple, affordable fashion. The degree to which the functionality of these tasks is maintained is directly related to its dependency on the timeliness of control plane reaction to network events. The main benefit of preventing control plane partition is to maintain a consistent global view of the network.

L'emulation logicielle des directeurs de commande numerique des machines-outils est un moyen efficace pour faciliter la mise au point de programmes piece et leur validation. Ces derniers sont verifies, mais aussi optimises, au moyen d'une serie de tests geometriques et technologiques. Pour affiner cette validation, nous proposons un ensemble d'applications liees a l'usinage de poches, une tache frequemment rencontree dans la fabrication de pieces mecaniques. Nous avons pour cela procede a la modelisation geometrique des trajectoires de l'outil de coupe par application du partitionnement du plan. Un graphe planaire decrivant les informations geometriques et topologiques implicitement definies par les trajectoires de l'outil est obtenu. L'utilisation de cette methode connue de la geometrie algorithmique a cependant necessite dans notre contexte industriel l'elaboration de traitements specifiques. D'une part, afin de determiner les points d'intersection dans le cas des chevauchements (complet ou incomplet) entre les aretes, et d'autre part, afin de modeliser les configurations geometriques de l'usinage qui sont a l'origine de la non connexite du graphe decrivant le partitionnement. Ainsi une representation complete des trajectoires de l'outil (traces) est obtenue. Afin de quantifier les recouvrements des surfaces balayees par l'outil, nous avons introduit le concept d'histoire d'une cellule du partitionnement. Pour chaque region de la poche, le nombre de passages de l'outil est determine. Ainsi, nous avons donne a la representation geometrique des regions de la poche une semantique liee a l'usinage. Ce concept nous permis de determiner la quantite de matiere enlevee le long d'une trajectoire, les passes d'usinage a vide et la variation de la largeur radiale le long de la trajectoire globale de l'outil. Nous avons propose aussi l'extraction de caracteristiques de forme a partir du modele geometrique de la piece usinee. Enfin, pour mettre en evidence la complexite globale de l'algorithme, nous etudions les complexites des differentes etapes de construction du partitionnement. Puis, nous procedons a une evaluation experimentale en presentant differents resultats concernant des exemples realistes issus d'un systeme de cfao.

Neste trabalho estudamos as iteradas de aplicações do plano no plano. Usando as técnicas da dinâmica simbólica em aplicações do plano no plano, tendo sempre por base a teoria de amassamento de Milnor e Thurston e o formalismo da dinâmica simbólica desenvolvido por Sousa Ramos, abordamos diferentes aspectos qualitativos da dinâmica das aplicações de Lozi. Assim, através da dinâmica simbólica introduzida por Yutaka Ishii, começamos por refor-mular a fronteira do espaço dos parâmetros correspondente às aplicações de Lozi equivalentes à ferradura de Smale. No seguimento, apresentamos um método que permite a construção da bacia de atracção para o atractor de uma qualquer aplicação de Lozi. Ainda usando a dinâmica simbólica para as aplicações de Lozi, apresentamos um método que fazendo uso de expansões em fracções contínuas, nos permite calcular o maior dos expoentes de Lyapunov de uma aplicação de Lozi. Com a introdução do conceito de ponto crítico e subsequentemente de sequência de amassamento para as aplicações de Lozi, partimos para uma a construção de uma partição de Markov do seu espaço de fases. Desse modo, é possível a caracterização completa do espaço dos parâmetros através da introdução do conceito de curva de amassamento, que mostramos serem curvas isentrópicas. Consequentemente, obtemos a descrição em termos da entropia topológica da família das aplicações de Lozi. ### Abstract - In this work, we study the iterations of two dimensional maps. Using symbolic dynamics techniques for two dimensional maps, based on both the kneading theory of Milnor and Thurston and the formalism of symbolic dynamics developed by Sousa Ramos, we studied the qualitative aspects of the dynamics of Lozi maps. Thus, through the symbolic dynamics introduced by Yutaka Ishii, through the correction of symbolic sequence that characterized the first tangency between stable and unstable manifolds, we reformulate the border for the Smale horseshoes. Following this work, we present a method that allows the construction of the basin of attraction for the Lozi attractor. Even using the symbolic dynamics, we introduce a new method, using continuous fractions expansions that allow us to compute the largest Lyapunov exponent. Through the kneading sequence for Lozi map, we characterize the region in the parameter space were we have the kneading curves and we also give a method to the construction of a partition of Markov for the Lozi attractors. Consequently we characterize the topological entropy for the Lozi map, and costruct a new topological invariant, the second invariant.

The thesis deals with a technological project of Polymer System Centre in Zlín. It focuses on financial documentation and a time schedule of the construction. The technological project in detail focuses on implementation of a fabric of the Polymer System Centre. The thesis includes a technical report which suggests procedure of the construction. The technological documentation includes a plan of the construction site arrangement, a time schedule, a financial plan for the construction, a budget, a technological report suggesting partitions made of magnesium slabs, a control plan, a test plan and health and safety plan.

Les plasmides pSci de Spiroplasma citri GII3 possèdent une structure mosaïque avec de nombreuses régions conservées. Des dérivés du plasmide pSci2 ont été produits par délétions successives et leur capacité de réplication a été évaluée. Le plus petit réplicon obtenu ne contient plus qu’une CDS (pE) et ses régions flanquantes. L’inactivation dans un vecteur navette du gène pE est suffisante pour abolir la réplication de ce plasmide dans S. citri. Des dérivés des pSci ont été introduits efficacement dans S. kunkelii et S. phoeniceum, deux spiroplasmes phytopathogènes pour lesquels aucun outil génétique n’était disponible jusqu’à présent. La stabilité des dérivés des pSci a également été évaluée par leur capacité à persister en l’absence de pression de sélection. L’instabilité ségrégationnelle des plasmides dans lesquels soj a été délété ou inactivé indique que la protéine de partition Soj/ParA est essentielle au maintien des plasmides pSci. L’incompatibilité sélective entre un plasmide pSci et ses dérivés a été exploitée pour produire une collection de souches possédant des profils plasmidiques différents. L’analyse des phénotypes d’acquisition et de transmission de plusieurs de ces mutants suggère que la CDS traG portée par le pSci6 est essentielle à la transmission de S. citri GII3. En revanche, les plasmides pSci1-5, codant les protéines adhésine-like ScARPs, ne sont indispensables ni à l’acquisition ni à la transmission. Dans le cadre de ce travail, plusieurs outils génétiques ont été adaptés aux mollicutes. Le promoteur Pxyl/tetO2 a été utilisé pour contrôler l’expression du gène de la spiraline chez S. citri et M. agalactiae. Enfin, un système de linéarisation de plasmide in vivo basé sur l’expression de l’endonucléase I-SceI a été utilisé pour l’élimination de plasmides pSci chez S. citri
Plasmids pSci from Spiroplasma citri GII3 display a mosaic gene organization with highly conserved regions. Through successive deletions, various pSci2 derivatives were constructed and assessed for their ability to replicate. The smallest functional replicon consists of one single CDS (pE) and its flanking, intergenic regions. Furthermore, shuttle (S. citri/E. coli) plasmids, in which the pE gene was disrupted, failed to replicate in S. citri, suggesting that PE is the replication protein. S. citri plasmids were efficiently introduced into S. kunkelii and S. phoeniceum, two plant pathogenic spiroplasmas, the transformation of which had never been described before. Studying stability of various pSci-derived plasmids in the absence of selection pressure strongly suggests the occurrence of an active partition system involving the soj-like gene. Selective incompatibility between a given pSci plasmid and its derivatives was used to remove plasmids from the wild-type strain. As a result, a collection of S. citri GII3 mutants differing in their plasmid contents was produced. Experimental transmission of these mutants through injection to or ingestion by the leafhopper vector will provide new insights into the role of plasmid encoded determinants in the biology of S. citri. First data indicated that pSci6 traG is required for insect transmission of S. citri GII3. In contrast, pSci1-5, encoding adhesin-like proteins, are not essential for both transmission and acquisition. In the frame of this work, new genetic tools have been adapted for use in mollicutes. The tetracycline inducible promoter, Pxyl/tetO2, was used to control spiraline gene in S. citri and M. agalactiae. Also, an in vivo linearization system based on the expression of the I-SceI-endonuclease was used to remove pSci plasmids from S. citri

Dans ce travail, nous avons introduit le concept sous-jacent de PUFEM et la formulation de base lié à l'équation de Helmholtz dans un domaine borné. Le processus d'enrichissement de l'onde plane de variables PUFEM a été montré et expliqué en détail. L'idée principale est d'inclure une connaissance a priori sur le comportement local de la solution dans l'espace des éléments finis en utilisant un ensemble de fonctions d'onde qui sont des solutions aux équations aux dérivées partielles. Dans cette étude, l'utilisation des ondes planes se propageant dans différentes directions a été favorisée car elle conduit à des algorithmes de calcul efficaces. En outre, nous avons montré que le nombre de directions d'ondes planes dépend de la taille de l'élément PUFEM et la fréquence des ondes à la fois en 2D et 3D. Les approches de sélection de ces ondes planes sont également illustrés. Pour les problèmes 3D, nous avons étudié deux systèmes de distribution des directions d'ondes planes qui sont la méthode du cube discrétisé et la méthode de la force de Coulomb. Il a été montré que celle-ci permet d'obtenir des directions d'onde espacées de façon uniforme et permet d'obtenir un nombre arbitraire d'ondes planes attachées à chaque noeud de l'élément de PUFEM, ce qui rend le procédé plus souple.Dans le chapitre 3, nous avons étudié la simulation numérique des ondes se propageant dans deux dimensions en utilisant PUFEM. La principale priorité de ce chapitre est de venir avec un schéma d'intégration exacte (EIS), résultant en un algorithme d'intégration rapide pour le calcul de matrices de coefficients de système avec une grande précision. L'élément 2D PUFEM a ensuite été utilisé pour résoudre un problème de transmission acoustique impliquant des matériaux poreux. Les résultats ont été vérifiés et validés par la comparaison avec des solutions analytiques. Les comparaisons entre le régime exact d'intégration (EIS) et en quadrature de Gauss ont montré le gain substantiel offert par l'EIE en termes de temps CPU.Une 3D exacte Schéma d'intégration a été présenté dans le chapitre 4, afin d'accélérer et de calculer avec précision (jusqu'à la précision de la machine) des intégrales très oscillatoires découlant des coefficients de la matrice de PUFEM associés à l'équation 3D Helmholtz. Grâce à des tests de convergence, un critère de sélection du nombre d'ondes planes a été proposé. Il a été montré que ce nombre ne pousse que quadratiquement avec la fréquence qui donne lieu à une réduction drastique du nombre total de degrés de libertés par rapport au FEM classique. Le procédé a été vérifié pour deux exemples numériques. Dans les deux cas, le procédé est représenté à converger vers la solution exacte. Pour le problème de la cavité avec une source de monopôle située à l'intérieur, nous avons testé deux modèles numériques pour évaluer leur performance relative. Dans ce scénario, où la solution exacte est singulière, le nombre de directions d'onde doit être choisie suffisamment élevée pour faire en sorte que les résultats ont convergé.Dans le dernier chapitre, nous avons étudié les performances numériques du PUFEM pour résoudre des champs sonores intérieurs 3D et des problèmes de transmission d'ondes dans lequel des matériaux absorbants sont présents. Dans le cas particulier d'un matériau réagissant localement modélisé par une impédance de surface. Un des critères d'estimation d'erreur numérique est proposé en considérant simplement une impédance purement imaginaire qui est connu pour produire des solutions à valeur réelle. Sur la base de cette estimation d'erreur, il a été démontré que le PUFEM peut parvenir à des solutions précises tout en conservant un coût de calcul très faible, et seulement environ 2 degrés de liberté par longueur d'onde ont été jugées suffisantes. Nous avons également étendu la PUFEM pour résoudre les problèmes de transmission des ondes entre l'air et un matériau poreux modélisé comme un fluide homogène équivalent
In this work, we have introduced the underlying concept of PUFEM and the basic formulation related to the Helmholtz equation in a bounded domain. The plane wave enrichment process of PUFEM variables was shown and explained in detail. The main idea is to include a priori knowledge about the local behavior of the solution into the finite element space by using a set of wave functions that are solutions to the partial differential equations. In this study, the use of plane waves propagating in various directions was favored as it leads to efficient computing algorithms. In addition, we showed that the number of plane wave directions depends on the size of the PUFEM element and the wave frequency both in 2D and 3D. The selection approaches for these plane waves were also illustrated. For 3D problems, we have investigated two distribution schemes of plane wave directions which are the discretized cube method and the Coulomb force method. It has been shown that the latter allows to get uniformly spaced wave directions and enables us to acquire an arbitrary number of plane waves attached to each node of the PUFEM element, making the method more flexible.In Chapter 3, we investigated the numerical simulation of propagating waves in two dimensions using PUFEM. The main priority of this chapter is to come up with an Exact Integration Scheme (EIS), resulting in a fast integration algorithm for computing system coefficient matrices with high accuracy. The 2D PUFEM element was then employed to solve an acoustic transmission problem involving porous materials. Results have been verified and validated through the comparison with analytical solutions. Comparisons between the Exact Integration Scheme (EIS) and Gaussian quadrature showed the substantial gain offered by the EIS in terms of CPU time.A 3D Exact Integration Scheme was presented in Chapter 4, in order to accelerate and compute accurately (up to machine precision) of highly oscillatory integrals arising from the PUFEM matrix coefficients associated with the 3D Helmholtz equation. Through convergence tests, a criteria for selecting the number of plane waves was proposed. It was shown that this number only grows quadratically with the frequency thus giving rise to a drastic reduction in the total number of degrees of freedoms in comparison to classical FEM. The method has been verified for two numerical examples. In both cases, the method is shown to converge to the exact solution. For the cavity problem with a monopole source located inside, we tested two numerical models to assess their relative performance. In this scenario where the exact solution is singular, the number of wave directions has to be chosen sufficiently high to ensure that results have converged. In the last Chapter, we have investigated the numerical performances of the PUFEM for solving 3D interior sound fields and wave transmission problems in which absorbing materials are present. For the specific case of a locally reacting material modeled by a surface impedance. A numerical error estimation criteria is proposed by simply considering a purely imaginary impedance which is known to produce real-valued solutions. Based on this error estimate, it has been shown that the PUFEM can achieve accurate solutions while maintaining a very low computational cost, and only around 2 degrees of freedom per wavelength were found to be sufficient. We also extended the PUFEM for solving wave transmission problems between the air and a porous material modeled as an equivalent homogeneous fluid. A simple 1D problem was tested (standing wave tube) and the PUFEM solutions were found to be around 1% error which is sufficient for engineering purposes

This thesis describes the implementation of the proposed project, which concerns the reconstruction of the existing building of shopping center and restaurant. To built-in an atrium area, outdoor terraces and extension of the second storey superstructure of the building will be realized the project of the Retirement Home. This work contains a summary technical report, processing of technological regulations, report building equipment, design of the main building machines and mechanisms, assessment services, occupational health and safety plan, itemized budget and schedule subject to Retirement Home.

Heightened concerns for cleaner air and increasingly more stringent regulations on sulphur content in transportation fuels will make desulphurization more and more important. The sulphur problem is becoming more serious in general, particularly for diesel fuels as the regulated sulphur content is getting an order of magnitude lower, while the sulphur contents of crude oils are becoming higher. This thesis aimed to develop a desulphurisation process (based on oxidation followed by extraction) with high efficiency, selectivity and minimum energy consumption leading to minimum environmental impact via laboratory batch experiments, mathematical modelling and optimisation. Deep desulphurization of model sulphur compounds (di-n-butyl sulphide, dimethyl sulfoxide and dibenzothiophene) and heavy gas oils (HGO) derived from Libyan crude oil were conducted. A series of batch experiments were carried out using a small reactor operating at various temperatures (40-100 °C) with hydrogen peroxide (H2O2) as oxidant and formic acid (HCOOH) as catalyst. Kinetic models for the oxidation process are then developed based on 'total sulphur approach'. Extraction of unoxidised and oxidised gas oils was also investigated using methanol, dimethylformamide (DMF) and N-methyl pyrolidone (NMP) as solvents. For each solvent, the 'measures' such as: the partition coefficient (KP), effectiveness factor (Kf) and extractor factor (Ef) are used to select the best/effective solvent and to find the effective heavy gas oil/solvent ratios. A CSTR model is then developed for the process for evaluating viability of the large scale operation. It is noted that while the energy consumption and recovery issues could be ignored for batch experiments these could not be ignored for large scale operation. Large amount of heating is necessary even to carry out the reaction at 30-40 °C, the recovery of which is very important for maximising the profitability of operation and also to minimise environmental impact by reducing net CO2 release. Here the heat integration of the oxidation process is considered to recover most of the external energy input. However, this leads to putting a number of heat exchangers in the oxidation process requiring capital investment. Optimisation problem is formulated using gPROMS modelling tool to optimise some of the design and operating parameters (such as reaction temperature, residence time and splitter ratio) of integrated process while minimising an objective function which is a coupled function of capital and operating costs involving design and operating parameters. Two cases are studied: where (i) HGO and catalyst are fed as one feed stream and (ii) HGO and catalyst are treated as two feed streams. A liquid-liquid extraction model is then developed for the extraction of sulphur compounds from the oxidised heavy gas oil. With the experimentally determined KP multi stage liquid-liquid extraction process is modelled using gPROMS software and the process is simulated for three different solvents at different oil/solvent ratios to select the best solvent, and to obtain the best heavy gas oil to solvent ratio and number of extraction stages to reduce the sulphur content to less than 10 ppm. Finally, an integrated oxidation and extraction steps of ODS process is developed based on the batch experiments and modelling. The recovery of oxidant, catalyst and solvent are considered and preliminary economic analysis for the integrated ODS process is presented.

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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Recent advances in telecommunications, collaborated with the development of image and video processing and acquisition devices has lead to a spectacular growth of the amount of the visual content data stored, transmitted and exchanged over Internet. Within this context, elaborating efficient tools to access, browse and retrieve video content has become a crucial challenge. In Chapter 2 we introduce and validate a novel shot boundary detection algorithm able to identify abrupt and gradual transitions. The technique is based on an enhanced graph partition model, combined with a multi-resolution analysis and a non-linear filtering operation. The global computational complexity is reduced by implementing a two-pass approach strategy. In Chapter 3 the video abstraction problem is considered. In our case, we have developed a keyframe representation system that extracts a variable number of images from each detected shot, depending on the visual content variation. The Chapter 4 deals with the issue of high level semantic segmentation into scenes. Here, a novel scene/DVD chapter detection method is introduced and validated. Spatio-temporal coherent shots are clustered into the same scene based on a set of temporal constraints, adaptive thresholds and neutralized shots. Chapter 5 considers the issue of object detection and segmentation. Here we introduce a novel spatio-temporal visual saliency system based on: region contrast, interest points correspondence, geometric transforms, motion classes' estimation and regions temporal consistency. The proposed technique is extended on 3D videos by representing the stereoscopic perception as a 2D video and its associated depth

Cette thèse est consacrée à l'étude de certaines propriétés d'exemples de classes de processus déterminantaux. Dans une première partie, nous nous intéressons aux processus déterminantaux reliés aux niveaux de Landau supérieurs du laplacien magnétique dans le disque unité. Nous donnons une estimation précise de la variance asymptotique du nombre de points dans un disque dont le rayon tend vers 1 -. Dans une deuxième partie, nous introduisons les déformations de Christoffel d'ensemble polynômiaux orthogonaux discrets, en multipliant la mesure d'orthogonalité sous-jacente par un polynôme positif. Nous montrons que les déformations de Christoffel de l'ensemble de Charlier convergent vers des déformations du processus de Bessel discret ; nous montrons également que les déformations de Christoffel des z-mesures sont des processus déterminantaux dont nous explicitons le noyau ; enfin, nous établissons que les déformations de Christoffel des z-mesures non-dégénérées convergent vers des déformation du processus avec le noyau Gamma. Dans une dernière partie, nous établissons une loi des grands nombre pour les motifs locaux de partitions planes aléatoires, généralisant à deux dimensions un phénomène apparaissant pour les mesures de Schur unidimensionnelles
This thesis studies several aspects of classes of determinantal processes. In a first part, we introduce determinantal processes arising from the higher Landau levels in the unit disk. We give a precise asymptotic for the variance of the number of points inside a disk of which the radius tends to one -. In a second part, we introduce the Christoffel deformations of discrete orthogonal polynomial ensembles, by multiplying the underlying orthogonality measure by a positive polynomial. We prove that the Christoffel deformatons of the Charlier ensemble converge towards deformations of the discrete Bessel process ; we also establish that Christoffel deformations of the z-measures are determinantal point process with an explicit kernel ; we eventually prove that the Christoffel deformations of the non-degenerate z-measures converge to a modification of the process with the Gamma kernel. In the last part, we establish a law of large numbers for local patterns in random plane partitions, generalizing in dimension two a phenomenon that occurs for a class of one dimensional Schur measures

Les progrès récents en matière de télécommunications, collaboré avec le développement des dispositifs d'acquisition d’images et de vidéos a conduit à une croissance spectaculaire de la quantité des données vidéo stockées, transmises et échangées sur l’Internet. Dans ce contexte, l'élaboration d'outils efficaces pour accéder aux éléments d’information présents dans le contenu vidéo est devenue un enjeu crucial. Dans le Chapitre 2 nous introduisons un nouvel algorithme pour la détection de changement de plans vidéo. La technique est basée sur la partition des graphes combinée avec une analyse multi-résolution et d'une opération de filtrage non-linéaire. La complexité globale de calcul est réduite par l’application d'une stratégie deux passes. Dans le Chapitre 3 le problème d’abstraction automatique est considéré. Dans notre cas, nous avons adopté un système de représentation image-clés qui extrait un nombre variable d'images de chaque plan vidéo détecté, en fonction de la variation du contenu visuel. Le Chapitre 4 traite la segmentation de haut niveau sémantique. En exploitant l'observation que les plans vidéo appartenant à la même scène ont les mêmes caractéristiques visuelles, nous introduisons un nouvel algorithme de regroupement avec contraintes temporelles, qui utilise le seuillage adaptatif et les plans vidéo neutralisés. Dans le Chapitre 5 nous abordons le thème de détection d’objets vidéo saillants. Dans ce contexte, nous avons introduit une nouvelle approche pour modéliser l'attention spatio-temporelle utilisant : la correspondance entre les points d'intérêt, les transformations géométriques et l’estimation des classes de mouvement
Recent advances in telecommunications, collaborated with the development of image and video processing and acquisition devices has lead to a spectacular growth of the amount of the visual content data stored, transmitted and exchanged over Internet. Within this context, elaborating efficient tools to access, browse and retrieve video content has become a crucial challenge. In Chapter 2 we introduce and validate a novel shot boundary detection algorithm able to identify abrupt and gradual transitions. The technique is based on an enhanced graph partition model, combined with a multi-resolution analysis and a non-linear filtering operation. The global computational complexity is reduced by implementing a two-pass approach strategy. In Chapter 3 the video abstraction problem is considered. In our case, we have developed a keyframe representation system that extracts a variable number of images from each detected shot, depending on the visual content variation. The Chapter 4 deals with the issue of high level semantic segmentation into scenes. Here, a novel scene/DVD chapter detection method is introduced and validated. Spatio-temporal coherent shots are clustered into the same scene based on a set of temporal constraints, adaptive thresholds and neutralized shots. Chapter 5 considers the issue of object detection and segmentation. Here we introduce a novel spatio-temporal visual saliency system based on: region contrast, interest points correspondence, geometric transforms, motion classes’ estimation and regions temporal consistency. The proposed technique is extended on 3D videos by representing the stereoscopic perception as a 2D video and its associated depth

碩士
崑山科技大學
環境工程研究所
102
With the rapid development of social economy and industry, the growing burden on the environment, but also spawned all kinds of environmental pollution problems, the biological material in the removal of toxic chemicals has great potential, especially in water-soluble heavy metals, the biological materials with fast response, good adsorption capacity and materials readily available and so on. Therefore, the use of aquatic plants to absorb and accumulate heavy metals have properties and adopt floating plants reproduce prolifically easily obtained - Salvinia natans and water hibiscus as adsorbent material. This study mainly studied in different heavy metals (Cu, Pb, Zn) solution to be cultured water hibiscus, Salvinia natans, explore the transmission characteristics and distribution of water lotus root, stem and leaf tissues of heavy metals, in addition, studies in different containing heavy metals (Cu, Pb, Zn) be a solution of water adsorption material Furong, Furong water adsorption material to explore the root, stem, leaf tissue heavy metal adsorption characteristics of the distribution. The results show that, since the cultivation of aquatic plants per plant roots, stems, leaves will be different weight distribution, which affects the total absorption of plant tissue content, can not reasonably comparison, thus further copper content per unit weight of the organization to be more reasonable to explore . Water Lotus single metal Cu, Pb, Zn, respectively, when cultured, the overall organization of the metal per unit weight distribution, with Cu, Zn Pb as compared to multi-display hibiscus water absorption of Cu and Zn easier to accumulate, in addition, its transmission rate in copper 20mg / L, while 80 mg / L culture, the order of roots> leaves> stems, but at 100 mg / L when the order of stem> root> leaf. Containing Cu, Pb, Zn heavy metal solutions were mixed Salvinia adsorption material, including different types and concentrations of heavy metals in the adsorption amount of roots, stems, leaves the organization varies.

A thesis submitted in fulfillment of the requirements for the degree of Doctor of Philosophy (by production of original research) in Mathematics School of Mathematics University of the Witwatersrand Johannesburg December 2012
Generating functions and asymptotic analysis have been used in four di er- ent situations to establish new results for extremely well studied structures. Later in this thesis a more detailed individual abstract for each of these studies is provided. The four situations are: A. Durfee square areas in integer partitions. B. A study of the relationship between integer compositions and their constituent partitions by specifying the asymptotic expectation of the number of such partitions in arbitrary composition. C. Similar to B above but focusing more on the generating functions rather than on the expectations derived therefrom. D. In the area of plane partitions with additional structure imposed upon them.

碩士
國立交通大學
電子工程學系 電子研究所
102
Currently, big data analysis is a heated topic around the world. A data-driven machine learning algorithm aims for fast learning and high accuracy is promising in the big data trend. In order to realize fast learning techniques suitable for big data analysis, this thesis proposed an accelerating engine which goals are achieving high parallelism and high bandwidth efficiency with low area cost. Due to the huge data transmission requirement, we designed a bit-plane payload architecture to maximum input bandwidth efficiency, which can process 64 input data in parallel in a single node. According to the implementation results, an energy efficiency of 1.86 mJ/Gb/Query with 16.9 Gb/sec throughput performance can be achieved under pattern N = 106, D=210 at the maximum operating frequency equals to 265 MHz.

碩士
國立中興大學
森林學系所
102
In this study, the crude wood vinegars were made from Cryptomeria japonica by using steel kiln heated to 350℃ and 500℃ respectively, under the heating rate of 100℃/hr and holding time of 1 hr. The wood vinegars were obtained by setting the crude wood vinegar for 3 months. And then the ether-extracted wood vinegar, acidic, phenolic and neutral fractions of wood vinegars were obtained by partition method using ether, NaHCO3(aq), H2SO4(aq) and NaOH(aq) as a chemical agent. The fundamental properties of wood vinegars and organic ingredients of acidic compounds, phenolic compounds and neutral compounds as well as the application of organic compounds on promoting the growth of seedling and plant filed experiment of vegetable were examined. The results indicated that the wood vinegars from C. japonica produced by pyrolysis temperature 350℃and 500℃ had a moisture content of 87.9-89.1%, Gardner color value of 9.7-9.9, specific gravity of 1.0122-1.0151, pH of 2.6, organic acid content of 3.59-4.35% and soluble tar content of 0.37-1.58%. The results also showed that the phenolic fraction was the highest content, followed by the acidic fraction for the wood vinegar with pyrolysis temperature of 500℃. However, the acidic fraction was the highest content, followed by the phenolic fraction for the wood vinegar with pyrolysis temperature of 350℃. In addition, the neutral fraction content was the least content for both wood vinegars obtained from pyrolysis temperature of 350℃ and 500℃. The main organic compounds of both wood vinegars were acetic acid. The main compound in acidic fraction was acetic acid, followed by propanoic acid and butanoic acid; in phenolic fraction was phenol and 2-methoxy-phenol; in the neutral fraction the main compounds were furfural and cyclopentenone derivatives for both wood vinegars, while 2-furanmethanol and 1-(2-furanyl)- ethanone were the major compounds for both wood vinegars. The 105 and 107 times dilution of ether-extracted wood vinegar which obtained from the wood vinegar with pyrolysis temperature of 500℃ could promote the seedling growth of Brassica chinensis L., Brassica campestris L. and Lactuca sativa L. The seedling index (1) were 0.1707, 0.1634 and 0.1036 respectively which were diluted 105 times. The results also founded that the phenolic fraction with different concentrations in this study would inhibit the seedling growth of B. chinensis L. and B. Campestris but which did not affect the growth of L. sativa L. However, the acidic fraction could increase the number of leaves of seedling; the phenolic and neutral fractions could promote the root growth of the seedling. As a conclusion, the major promotion effectives on the seedling growth is due to the whole ingredients of the wood vinegar. In the plant field experiment, the phenolic and acidic fractions which were diluted 105 times could promote the growth of the Brassica rapa L. Chinensis Group. And the fresh weight which were 24.00 and 20.76 g respectively. The growth of the Brassica rapa chinensis (L.) Hanelt which were watered by acidic fraction and ether-extracted wood vinegar could be promoted significantly. The results also showed that the four kinds of agent could reduce the nitrate concentrations on the plant. Both of the ether-extracted wood vinegar and the acidic fraction could increase the growth of the stem height and the total solid content for Solanum Lycopericum L. However, the neutral fraction could inhibit the growth of the stem height, but the total solid content was not affect. The Zea mays L. which was watered by ether-extracted wood vinegar had the largest fresh weight of the fruit. However, using the neutral, phenolic and acidic fractions were no significant to enhance the fruit weight to of Z. mays L., but the grain of corn was full and the length of corn without grain were less than that of the control. As a conclusion, the C. japonica wood vinegar and its derivative fractions used in the plant field experiment were not only to promote the growth of the vegetables, but also to increase the growth of the fruits.

Yes
The extraction of bioactive compounds, produced by plant cell cultures, directly from their culture medium, which contains other by-products, is a great challenge. Resveratrol extraction from its grapevine cell cultures is considered here as an example to improve the extraction processes from plant cell cultures using solubility parameters. Successive liquid-liquid extraction (LLE) processes were exploited to extract resveratrol from the culture medium with an extraction ratio approaching 100%, high selectivity and minimum amounts of solvents. The calculations of partition coefficients as a function of solubility parameters demonstrated that benzyl benzoate is the most suitable intermediate solvent to extract resveratrol from its aqueous medium. The calculations also illustrated the high ability of methanol and ethanol to extract resveratrol from benzyl benzoate. The physicochemical properties of benzyl benzoate and processing conditions were exploited to separate it from aqueous media and organic solvents. The agitation method, component ratios and extraction time were studied to maximize the extraction yield. Under the best studied conditions, the recovery of resveratrol from different culture media approached ∼100% with a selectivity of ∼92%. Ultimately, the improved extraction processes of resveratrol are markedly efficient, selective, rapid and economical.
Mohammad Amin Mohammad gratefully acknowledges CARA (The Council for At-Risk Academics, Stephen Wordsworth and Ryan Mundy) for providing the financial support for an academic fellowship.