Dissertations / Theses on the topic 'Compatibility analysis'
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Kui, Zhiqing. "On the Construction of Multiresolution Analysis Compatible with General Subdivisions." Thesis, Ecole centrale de Marseille, 2018. http://www.theses.fr/2018ECDM0002/document.
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Les schémas de subdivision sont largement utilisés pour la génération rapide de courbes ou de surfaces. Des développements récents ont produit des schémas variés, en particulier non-linéaires, non-interpolants ou non-homogènes.Pour pouvoir être utilisés en compression, analyse ou contrôle de données, ces schémas de subdivision doivent être incorporés dans une analyse multiresolution qui, imitant les analyses en ondelettes, fournit une décomposition multi-échelle d'un signal, d'une courbe ou d'une surface. Les ingrédients nécessaires à la définition d'une analyse multiresolution associée à un schéma de subdivision sont des schémas de décimation et de détails. Leur construction est facile quand le schéma de multiresolution est interpolant.Cette thèse est consacrée à la construction de schémas de décimation et de détails compatibles avec un schéma de subdivision le plus général possible. Nous commençons par une construction générique dans le cas d'opérateurs homogènes (mais pas interpolants) puis nous généralisons à des situations non-homogènes et non-linéaires. Nous construisons ainsi des analyses multiresolutions compatibles avec de nombreux schémas récemment développés. L'analyse des performances des analyses ainsi construitesest effectuée. Nous présentons des applications numériques en compression d'imagesSubdivision schemes are widely used for rapid curve or surface generation. Recent developments have produced various schemes, in particular non-linear, non-interpolatory or non-uniform.To be used in compression, analysis or control of data, subdivision schemes should be incorporated in a multiresolution analysis that, mimicking wavelet analyses, provides a multi-scale decomposition of a signal, a curve, or a surface. The ingredients needed to define a multiresolution analysis associated with a subdivision scheme are decimation scheme and detail operators. Their construction is straightforward when the multiresolution scheme is interpolatory.This thesis is devoted to the construction of decimation schemes and detail operators compatible with general subdivision schemes. We start with a generic construction in the uniform (but not interpolatory) case and then generalize to non-uniform and non-linear situations. Applying these results, we build multiresolution analyses that are compatible with many recently developed schemes. Analysis of the performances of the constructed analyses is carried out. We present numerical applications in image compression
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Howdyshell, James Robert. "Strain Compatibility Analysis in Slope Stability Modeling." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269113810.
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Bocchino, Chris, and William Hamilton. "EASTERN RANGE TITAN IV/CENTAUR-TDRSS OPERATIONAL COMPATIBILITY TESTING." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/607608.
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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, CaliforniaThe future of range operations in the area of expendable launch vehicle (ELV) support is unquestionably headed in the direction of space-based rather than land- or air-based assets for such functions as metric tracking or telemetry data collection. To this end, an effort was recently completed by the Air Force’s Eastern Range (ER) to certify NASA’s Tracking and Data Relay Satellite System (TDRSS) as a viable and operational asset to be used for telemetry coverage during future Titan IV/Centaur launches. The test plan developed to demonstrate this capability consisted of three parts: 1) a bit error rate test; 2) a bit-by-bit compare of data recorded via conventional means vice the TDRSS network while the vehicle was radiating in a fixed position from the pad; and 3) an in-flight demonstration to ensure positive radio frequency (RF) link and usable data during critical periods of telemetry collection. The subsequent approval by the Air Force of this approach allows future launch vehicle contractors a relatively inexpensive and reliable means of telemetry data collection even when launch trajectories are out of sight of land-based assets or when land- or aircraft-based assets are not available for support.
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Šrámek, Ondřej. "Compatibility of Western and Islamic Models of Democracy: A Comparative Analysis." Doctoral thesis, Vysoká škola ekonomická v Praze, 2004. http://www.nusl.cz/ntk/nusl-77113.
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The thesis looks at compatibility of Islam and democracy in a new way. The main method is analysis of political ideologies. A number of models of democracy are identified in both the Western and Islamic context. These are then originally compared in a framework of classification by the source of political sovereignty and political action.
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Tsang, John. "An Approximation Algorithm for Character Compatibility and Fast Quartet-based Phylogenetic Tree Comparison." Thesis, University of Waterloo, 2000. http://hdl.handle.net/10012/1110.
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Phylogenetic analysis, or the inference of evolutionary history is done routinely by biologists and is one of the most important problems in systematic biology. In this thesis, we study two computational problems in the area. First, we study the evolutionary tree reconstruction problem under the character compatibility (CC) paradigm and give a polynomial time approximation scheme (PTAS) for a variation of the formulation called fractional character compatibility (FCC), which has been proven to be NP-hard. We also present a very simple algorithm called the Ordinal Split Method (OSM) to generate bipartitions given sequence data, which can be served as a front-end to the PTAS. The performance of the OSM and the validity of the FCC formulation are studied through simulation experiments. The second part of this thesis presents an efficient algorithm to compare evolutionary trees using the quartet metric. Different evolutionary hypothesis arises when different data sets are used or when different tree inference methods are applied to the same data set. Tree comparisons are routinely done by biologists to evaluate the quality of their tree inference experiments. The quartet metric has many desirable properties but its use has been hindered by its relatively heavy computational requirements. We address this problem by giving the first O(n^2) time algorithm to compute the quartet distance between two evolutionary trees.
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Bèges, Rémi. "Analysis and modeling methods for predicting functional robustness of integrated circuits during fast transient events." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30046/document.
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La miniaturisation des circuits intégrés se poursuit de nos jours avec le développement de technologies toujours plus fines et denses. Elle permet une intégration des circuits toujours plus massive, avec des performances plus élevées et une réduction des coûts de production. La réduction de taille des circuits s'accompagne aussi d'une augmentation de leur sensibilité électrique. L'électronique automobile est un acteur majeur dans la nouvelle tendance des véhicules autonomes. Ce type d'application a besoin d'analyser des données et d'appliquer des actions sur le véhicule en temps réel. L'objectif à terme est d'améliorer la sécurité des usagers. Il est donc vital de garantir que ces modules électroniques pourront effectuer leurs tâches correctement malgré toutes les perturbations auxquelles ils seront exposés. Néanmoins, l'environnement automobile est particulièrement sévère pour l'électronique. Parmi tous les stress rencontrés, les décharges électrostatiques (ESD - Electrostatic Discharge) sont une importante source d'agression électrique. Ce type d'évènement très bref est suffisamment violent pour détruire des composants électroniques ou les perturber pendant leur fonctionnement. Les recherches présentées ici se concentrent sur l'analyse des défaillances fonctionnelles. À cause des ESD, des fonctions électroniques peuvent cesser temporairement d'être opérantes. Des méthodes d'analyse et de prédiction sont requises au niveau-circuit intégré afin de détecter des points de faiblesses susceptibles de générer des fautes fonctionnelles pendant l'exposition à un stress électrostatique. Différentes approches ont été proposées dans ce but. Une méthode hiérarchique de modélisation a été mise au point afin d'être capable de reproduire la forme d'onde ESD jusqu'à l'entrée du circuit intégré. Avec cette approche, chaque élément du système est modélisé individuellement puis son modèle ajouté au schéma complet. Un cas d'étude réaliste de défaillance fonctionnelle d'un circuit intégré a été analysé à l'aide d'outils de simulation. Afin d'obtenir plus de données sur cette faute, une puce de test a été développée, contenant des structures de surveillance et de mesure directement intégrées dans la puce. La dernière partie de ce travail de recherche est concentrée sur le développement de méthodes d'analyse dans le but d'identifier efficacement des fautes par simulation. Une des techniques développées consiste à modéliser chaque bloc d'une fonction individuellement puis permet de chaîner ces modèles afin de déterminer la robustesse de la fonction complète. La deuxième méthode tente de construire un modèle équivalent dit boite-noire d'une fonction de haut-niveau d'un circuit intégré. Ces travaux de recherche ont mené à la mise au point de prototypes matériels et logiciels et à la mise en évidence de points bloquants qui pourront constituer une base pour de futurs travauxMiniaturization of electronic circuits continues nowadays with the more recent technology nodes being applied to diverse fields of application such as automotive. Very dense and small integrated circuits are interesting for economic reasons, because they are cheaper to manufacture in mass and can pack more functionalities with elevated performances. The counterpart of size reduction is integrated circuits becoming more fragile electrically. In the automotive world, the new trend of fully autonomous driving is seeing tremendous progress recently. Autonomous vehicles must take decisions and perform critical actions such as braking or steering the wheel. Those decisions are taken by electronic modules, that have now very high responsibilities with regards of our safety. It is important to ensure that those modules will operate no matter the kind of disturbances they can be exposed to. The automotive world is a quite harsh environment for electronic systems. A major source of electrical stress is called the Electrostatic Discharge (ESD). It is a very sudden flow of electricity of large amplitude capable of destroying electronic components, or disturb them during their normal operation. This research focuses on functional failures where functionality can be temporarily lost after an ESD with various impact on the vehicle. To guarantee before manufacturing that a module and its components will perform their duty correctly, new analysis and prediction methods are required against soft-failures caused by electrostatic discharges. In this research, different approaches have been explored and proposed towards that goal. First, a modelling method for reproducing the ESD waveforms from the test generator up to the integrated circuit input is presented. It is based on a hierarchical approach where each element of the system is modelled individually, then added to the complete setup model. A practical case of functional failure at silicon-level is analyzed using simulation tools. To acquire more data on this fault, a testchip has been designed. It contains on-chip monitoring structures to measure voltage and current, and monitor function behavior directly at silicon-level. The last part of this research details different analysis methods developed for identifying efficiently functional weaknesses. The methods rely heavily on simulation tools, and prototypes have been implemented to prove the initial concepts. The first method models each function inside the chip individually, using behavioral models, then enables to connect the models together to deduce the full function's robustness. It enables hierarchical analysis of complex integrated circuit designs, to identify potential weak spots inside the circuit that could require more shielding or protection. The second method is focused on constructing equivalent electrical black box models of integrated circuit functions. The goal is to model the IC with a behavioral, black-box model capable of reproducing waveforms in powered conditions during the ESD. In summary, this research work has led to the development of several hardware and software prototypes. It has also highlighted important modelling challenges to solve in future works to achieve better functional robustness against electrostatic discharges
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Martinez, Fabien. "Integrating green into business strategies and operations : compatibility analysis and syncretistic perspective." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/46112/.
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The embracing of environmental responsibility by for-profit organisations is a latent concern for contemporary social scientists and management scholars. The Organisation for Economic and Co-operative Development recently published alarming predictions about the impact of human (and especially business) activities on the environment. Both management theorists and business practitioners failed to create the premise for, and inform the direction to, environmental sustainable development – although their interest in raising this challenge has significantly grown throughout the last decade. A number of Environmental corporate Social Responsibility (ESR) theorists are calling for a paradigm in which ethical or moral concerns are reintegrated in the practice of management. A more holistic and integrative perspective on corporate environmental and economic sustainability, it is argued, would generate improvements in the practice of ESR. Such a perspective is currently lacking; partly owing to the allegiance of theorists to atomistic and ‘outmoded’ ways of thinking. This thesis articulates a framework for ESR which prescribes the integration of environmental concerns in the day-to-day culture, processes and activities of a firm. Existing research suggests that the construct of a holistic and comprehensive view of ESR integration requires considerations both of business imperatives and of individuals’ cognitions. A compatibility framework is discussed, through which the operational and normative drivers for ESR integration are integrated. Four scenarios of compatibility are proposed: trade-off, ambidexterity, synergy and symbiosis. The theoretical discussion extends to the consideration of ESR integration as a managerial challenge whereby individual agents of management endeavour to balance objective rationale with subjective morale/ethics in the quest for a considerate environmental response. To examine this challenge, the present study suggests a new direction for theory based on the concept of syncretism – a perspective which received little attention outside the fields of culture and religion. The syncretistic framework is the main contribution of this thesis; it advocates the reconciliation of economic imperatives and environmental concerns via the reintegration of corporate objective (or systemic) and subjective (or constructionist) contingencies. To develop/refine the theoretical propositions, the thesis provides empirical evidence from thirty-seven interviews with business consultants and managers in a UK Brewery. The managers were interviewed more than once. The findings indicate that systemic pressures are often put forward as constraints to ESR integration; whether this translates into shareholders disapproval, economic instability, market volatility, etc. They tend to impinge on the normative engagement of business practitioners and provoke an incapacity or reluctance to change, understand, learn and lead towards syncretistic reconciliation. The analysis portrays the UK Brewery as an environmentally proactive, multi-level responsive company. Drawing upon the syncretistic framework, the firm’s proactive approach is argued to be impeded by a number of systemic factors. The syncretistic and compatibility frameworks, it is alleged, provide substance to the creation of a holistic theory of ESR integration for understanding the specific, and broader, causal mechanisms that are at play. KEY WORDS: corporate environmental responsibility, syncretism, sustainability, strategy management, business performance.
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Lundengård, Karl. "Generalized Vandermonde matrices and determinants in electromagnetic compatibility." Licentiate thesis, Mälardalens högskola, Utbildningsvetenskap och Matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-34864.
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Matrices whose rows (or columns) consists of monomials of sequential powers are called Vandermonde matrices and can be used to describe several useful concepts and have properties that can be helpful for solving many kinds of problems. In this thesis we will discuss this matrix and some of its properties as well as a generalization of it and how it can be applied to curve fitting discharge current for the purpose of ensuring electromagnetic compatibility. In the first chapter the basic theory for later chapters is introduced. This includes the Vandermonde matrix and some of its properties, history, applications and generalizations, interpolation and regression problems, optimal experiment design and modelling of electrostatic discharge currents with the purpose to ensure electromagnetic compatibility. The second chapter focuses on finding the extreme points for the determinant for the Vandermonde matrix on various surfaces including spheres, ellipsoids, cylinders and tori. The extreme points are analysed in three dimensions or more. The third chapter discusses fitting a particular model called the p-peaked Analytically Extended Function (AEF) to data taken either from a standard for electromagnetic compatibility or experimental measurements. More specifically the AEF will be fitted to discharge currents from the IEC 62305-1 and IEC 61000-4-2 standards for lightning protection and electrostatic discharge immunity as well as some experimentally measured data of similar phenomena.
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Pan, Weifeng. "EMI failure analysis techniques and noise prediction for trace crossing split planes." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Pan_09007dcc80663d0c.pdf.
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Thesis (Ph. D.)--Missouri University of Science and Technology, 2009.Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 27, 2009) Includes bibliographical references.
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Bouchaala, Afef. "Méthode de modélisation prédictive de boîtiers des circuits intégrés en vue d’anticiper avant design l’immunité au bruit du circuit." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S128.
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Avec la miniaturisation de plus en plus poussée des composants sur silicium, certains phénomènes, connus sous le nom des problèmes de la Compatibilité Électromagnétique peuvent surgir, ils sont les principales causes de la reconception des systèmes intégrés. Ce travail de thèse consiste à développer une méthodologie d'analyse prédictive de la compatibilité électromagnétique pour les systèmes électroniques, par anticipation design. Afin d'aboutir à ce modèle prédictif, différents champs d'investigation ont été mise en place afin d'appréhender l'ensemble du problème. Premièrement, nous avons développé une méthode de prédiction des parasites du boîtier électronique appelée « MCTL Matrix Method ». Cette méthode est issue du principe du prototypage virtuel du boîtier et elle est basée sur des lignes de transmission multiconducteurs. Deuxièmement, nous avons proposé une méthodologie d'analyse de l'immunité du système complet dès les premières phases de la conceptionModern electronic systems require a high-level of integrations. As a result, some phenomena which are known as ElectroMagnetic Compatibility (EMC) issues are arising, and they are the major causes of system redesign. This main objective of this work is to develop a predictive methodology for systems immunity. To do so, different fields have been investigated: first, we have developed a predictive method for package parasites called “MCTL Matrix Method” which is based on a virtual package prototyping and Multiconductor transmission lines. Then we have proposed a new methodology for system immunity at the earliest design stages
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Khan, Zulfiqar A. "EMI/EMC analysis of electronic systems subject to near zone illuminations." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196207323.
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Wang, Xiaochuan. "A Domain Decomposition Method for Analysis of Three-Dimensional Large-Scale Electromagnetic Compatibility Problems." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338376950.
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Wang-Hurst, Kathy Weiquan. "Analysis of Path Loss from a Transmitter in an Aircraft Cabin to an Exterior Fuselage-Mounted Antenna." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/36237.
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It is important to investigate the threat posed to commercial aircraft by on board electronic
transmitters in the passenger cabin and the cargo holds of large transport aircraft. These
transmitters may be in the form of unintentional use of portable electronic devices or even
intentional radio frequency (RF) threat sources from terrorists. Thus, it is of interest to
determine the "interference path loss" (IPL) from a transmitting device inside the cabin
of such aircraft to the antenna terminals of a potential victim system of the aircraft. Past
studies have concentrated on measurements. These efforts to measure IPL directly have
demonstrated that accurate and repeatible measurements are difficult to obtain. Very little
modeling work has been done successfully to understand the IPL on aircraft. In this thesis,
we propose a 3-step methodology to quantify the interference path loss (IPL). We then apply
this methodology to a broad class of aircraft and show results. To validate our results, we
compare our findings to known measurements and discuss possible sources of errors. Finally
we suggest areas of improvement to our analysis and propose future work.Master of Science
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WALLACE, SCOTT DOUGLAS. "APPLICATION OF AN INTEGRATIVE MODEL FOR ASSESSING THE COMPATIBILITY OF WORK FACTORS IN THE WORKPLACE." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin984571708.
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Lopez, Rémy. "Adaptation des méthodes “statistical energy analysis” (sea) aux problèmes d'électromagnétisme en cavités." Toulouse 3, 2006. http://www.theses.fr/2006TOU30045.
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Modéliser des phénomènes électromagnétiques par des méthodes déterministes requiert une division du volume étudié en éléments discrets dont la taille est de l'ordre du dixième de la longueur d'onde. La demande en ressource informatique augmente donc avec la fréquence. De plus, compte tenu de la complexité des problèmes et des incertitudes sur les données d'entrées, il devient illusoire de réaliser un calcul déterministe pour chaque variable analysée. De nouvelles méthodes, dites énergétiques, sont développées pour étudier les systèmes grands devant la longueur d'onde. Elles permettent d'estimer statistiquement la valeur du champ à l'intérieur d'un système. Une de ces techniques, la Statistical Energy Analysis (SEA), développée en acoustique, est transposée ici en électromagnétisme. La SEA permet de décrire les échanges d'énergies entre les différents systèmes composant une structure. L'énergie de chaque système dépend des notions de mode de résonance, de perte et de couplage. Les paramètres liés à ces notions sont évalués analytiquement et numériquement. Une méthode de sous structuration automatique est également présentée Les résultats obtenus semblent confirmer l'intérêt de cette méthodeModeling electromagnetic phenomena by deterministic methods requires a subdivision of the volume under study into a number of discrete elements with sizes of the order of tenth of the wavelength. So, the demand for computer resources significantly grows with increasing frequencies. Moreover, taking into account the complexity of the problems and the uncertainties on the input data, it becomes illusory to make a deterministic calculation for each studied variable. New methods, called energetic methods, were developed to study systems large in front of the wavelength. They allow to estimate statistically the value of the field inside a system One of these methods, the Statistical Energy Analysis (SEA), developed in acoustic, is transposed here in electromagnetism. The SEA allows to describe the exchanges of energy between the different systems of a structure. The energy of each system depends on the concepts of mode of resonance, loss and coupling. The parameters linked with these concepts are assessed by analytical formulae and numerical simulations. An automatic sub structuring method is also presented. The results obtained seem to confirm the interest of this method
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Koo, Ja Yong. "System and IC level analysis of electrostatic discharge (ESD) and electrical fast transient (EFT) immunity and associated coupling mechanisms." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/Koo_09007dcc80557c11.pdf.
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Thesis (Ph. D.)--Missouri University of Science and Technology, 2008.Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 21, 2008) Includes bibliographical references.
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Joaquim, Tony Ramos. "Vegetative compatibility analysis and comparative pathogenicity to potato of soil and potato plant isolates of Verticillium dahlia /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487598748018172.
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Ponge, Julien Nicolas Computer Science & Engineering Faculty of Engineering UNSW. "Model based analysis of time-aware web services interactions." Publisher:University of New South Wales. Computer Science & Engineering, 2009. http://handle.unsw.edu.au/1959.4/43525.
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Web services are increasingly gaining acceptance as a framework for facilitating application-to-application interactions within and across enterprises. It is commonly accepted that a service description should include not only the interface, but also the business protocol supported by the service. The present work focuses on the formalization of the important category of protocols that include time-related constraints (called timed protocols), and the impact of time on compatibility and replaceability analysis. We formalized the following timing constraints: CInvoke constraints define time windows of availability while MInvoke constraints define expirations deadlines. We extended techniques for compatibility and replaceability analysis between timed protocols by using a semantic-preserving mapping between timed protocols and timed automata, leading to the novel class of protocol timed automata (PTA). Specifically, PTA exhibit silent transitions that cannot be removed in general, yet they are closed under complementation, making every type of compatibility or replaceability analysis decidable. Finally, we implemented our approach in the context of a larger project called ServiceMosaic, a model-driven framework for web service life-cycle management.
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Trinkle, Joachim. "Analysis of power ground planes." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0005.
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[Truncated introduction] A major contribution of this thesis is the observation that the N port impedance parameters for the distribution planes can be modelled as simple LC series elements in the frequency range over which the interesting interactions between the loading elements and the planes occur. Loosely speaking, the C represents the inter-plane capacitance and the L is associated with a first order frequency trend of the transfer and input impedances associated with the planes. In the literature, values for L have been obtained for power ground plane structures using curve fitting techniques [38]. In this thesis, formulae are developed for L based on the modal summation expression. As for the impedance case, the approach developed in the thesis that removes the singular behaviour, results in computational efficient expressions. Preliminary results on the simple LC model were presented by the author in [42, 43] The results reported in the thesis extend this work in the light of the new impedance model proposed. The simple LC characterisation enables the development of new low frequency expression for the input and transfer impedance for ports on planes loaded with many decoupling capacitors. The expressions are based on a one off frequency independent decomposition of the inductance matrix associated with the placement of the capacitors. The eigen-mode decomposition eliminates the need for matrix inversion at each frequency point and leads to an efficient computational procedure for calculating the impedance of loaded planes. Furthermore, the interaction between the capacitors and planes is clearly seen in the analytical expressions. This has led to new insights regarding the interaction of multiple capacitors with supply planes in terms of location, resonance mechanisms, pole locations and damping. These insights are beneficial to the understanding and optimisation of printed circuit board power distribution systems.
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Bertol, Charise Dallazem. "Alogliptina : caracterização, estudo de compatibilidade, validação de metodologia analítica e estudo de estabilidade para avaliação da qualidade." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/163739.
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Alogliptina (ALG) é um hipoglicemiante oral, que inibe a enzima dipeptidil peptidase – 4 (DPP-4) com alta seletividade e aumenta a secreção de insulina prevenindo a hiperglicemia prandial. Como ALG não está descrita nas farmacopeias, este trabalho objetivou caracterizar a matéria-prima (Capítulo I), desenvolver métodos analíticos (Capítulo II) e avaliar sua estabilidade (Capítulo III), auxiliando no controle de qualidade. No capítulo I, a ALG foi caracterizada através de calorimetria exploratória diferencial (DSC), termogravimetria (TGA) e microscopia eletrônica de varredura (SEM) acoplada a espectrômetro de raios X por dispersão de energia (EDS). A compatibilidade entre a ALG e os excipientes presentes nos comprimidos foi avaliada por DSC, TGA, infravermelho com transformada de Fourier (FTIR), difração de raios-X de pó (XRPD) e microscopia com estágio de aquecimento. ALG apresentou pureza próxima a 99%, com faixa de fusão entre 179,4 e 187,2 °C (pico em 183,3 °C), seguida por decomposição que iniciou em 198,0 °C. Na SEM/EDS, os cristais de ALG mostraram-se predominantemente irregulares e foram detectados traços de impurezas (chumbo e cobre). Alterações na temperatura de fusão da ALG com manitol, estearato de magnésio e nos comprimidos comerciais foram observadas. A microscopia com aquecimento demonstrou que a interação entre manitol e ALG e nos comprimidos é devida à solubilização do fármaco no excipiente fundido, enquanto que na mistura com o estearato de magnésio é devida à fusão do excipiente e do fármaco que ocorrem separadamente, onde o excipiente funde antes que o fármaco. FTIR e XRPD das misturas não detectaram incompatibilidades, somente o aparecimento de bandas adicionais relacionadas aos excipientes. ALG foi compatível com todos os excipientes testados. Estes resultados são importantes para caracterizar, conhecer a estabilidade e a compatibilidade do fármaco. No capítulo II, foram desenvolvidos e validados métodos de cromatografia líquida (LC) indicativos de estabilidade utilizando dois detectores, ultravioleta (UV) e detector de aerossol carregado (CAD) para análise de ALG em comprimidos. Foi utilizada uma coluna C8 (250 mm x 4,6 mm, 5 μm) em modo isocrático, fluxo de 0,8 mL min-1, utilizando acetonitrila e tampão acetato de amônio 10 mM pH 3,5 ajustado com ácido acético (90:10, v/v) como fase móvel e detecção no UV em 275 nm. Os métodos foram lineares no intervalo de 25 - 200 μg mL-1 em ambos os detectores. Os limites de detecção foram de 2,65 e 6,25 μg mL-1 e os de quantificação de 8,84 e 20,85 μg mL-1, respectivamente, para UV e CAD. Os métodos foram precisos e exatos, com desvio padrão relativo menor que 3% e percentuais de recuperação próximos a 100%. Nenhum dos excipientes, ou produtos de degradação interferiu na detecção do fármaco durante os estudos de especificidade. No ensaio de robustez, pequenas alterações no fluxo de fase móvel, pH e concentração de solvente orgânico não afetou significativamente os resultados. O doseamento dos comprimidos obtido com ambos detectores não mostrou diferenças entre si. Os métodos podem ser considerados intercambiáveis e podem ser aplicados como ferramentas para o controle de qualidade de rotina de comprimidos de ALG. No capítulo III foi avaliada a estabilidade térmica da ALG utilizando TGA isotérmica e não isotérmica, e degradação em estufa, analisando as amostras por LC-UV. Na TGA isotérmica a ALG foi submetida a 150, 155, 160, 165, 170 °C, até perda de massa de 10% e os dados foram analisados pelo método de Arrhenius. Na TGA não isotérmica variaram-se as razões de aquecimento, utilizando 2,5, 5,0, 10,0 e 15,0 °C/min até 500 °C. Os dados foram analisados pelo método de Ozawa e de Kissinger. Na degradação em estufa o fármaco foi submetido as temperaturas de 130, 140, 150, 155, 160 e 170 °C. Os parâmetros cinéticos foram obtidos por Arrhenius. ALG segue degradação de zero ordem, onde a velocidade de degradação independe da concentração do reagente. A perda de massa está relacionada à perda química. Os parâmetros cinéticos variaram de acordo com o modelo matemático aplicado. A energia de ativação variou de 26 a 45 kcal/mol. O fármaco degradado demonstrou ser menos tóxico em ensaio de citotoxicidade em células CRIB do que o fármaco não degradado. Os métodos desenvolvidos e a caracterização realizada mostram-se úteis para o adequado controle de qualidade do fármaco.Alogliptin (ALG) is an oral hypoglycemic agent, which inhibits the enzyme dipeptidyl peptidase - 4 (DPP-4) with high selectivity and increase insulin secretion, preventing postprandial hyperglycemia. ALG is not described in any pharmacopeia. In this context, this study aimed to characterize the active pharmaceutical ingredient (Chapter I), to developed assay methods (Chapter II) and to evaluate the stability (Chapter III), assuring the adequate quality control. In Chapter I, ALG was characterized by differential scanning calorimetry (DSC), thermogravimetry (TGA) and scanning electron microscopy (SEM) coupled with energy dispersive spectrometer X-ray (EDS). The compatibility between ALG and the excipients present in the commercial tablets was evaluated by DSC, TGA, Fourier transform infrared (FTIR), X-ray powder diffraction (XRPD) and hot stage microscopy. ALG presented purity close to 99%, with a melting range between 179.4 to 187.2 °C (peak at 183.33 °C), followed by decomposition which began at 198 °C. In the SEM/EDS the crystals of ALG were predominantly irregulars and it were detected traces of impurities (lead and copper). Alterations in melting temperature of ALG with mannitol, magnesium stearate and in tablets were observed. The hot stage microscopy showed that the interactions between mannitol and ALG and in the tablets were due to the solubilization of the drug in the fused excipient, and in the mixture with magnesium stearate, it was due to the melting of the drug and excipient separately, where the excipient started the melting prior of the drug. FTIR and XRPD of the mixtures did not detect incompatibilities, only the appearance of additional bands related to the excipients. ALG was compatible with all excipients tested. These results are important to characterize, to know the drug stability and compatibility. In Chapter II, liquid chromatography (LC) methods indicative of stability were developed and validated using two detectors, ultraviolet (UV) and charged aerosol detector (CAD) for ALG tablets. It was used a C8 column (250 mm x 4.6 mm, 5 um) in isocratic mode, flow rate of 0.8 ml min-1 using acetonitrile and ammonium acetate buffer 10 mM, pH 3.5 adjusted with acid acetic acid (90:10, v/v) as mobile phase and UV detection at 275 nm. The methods were linear in the range of 25 - 200 μg ml-1 in both detectors. Limits of detection were 2.65 and 6.25 μg mL-1, and of quantification were 8.84 and 20.85 μg mL-1, respectively, for UV and CAD. The methods were accurate and precise, with a relative standard deviation lower than 3% and recovery close to 100%. None of the excipients or degradation products showed interference in the drug detection during specificity studies. In the robustness test, small changes in the mobile phase flow, pH and organic solvent concentration did not significantly affect the results. The results for tablets obtained with both detectors showed no differences. The methods may be considered interchangeable, and they can be used as tools for routine quality control of ALG tablets. In Chapter III the thermal stability of the ALG was evaluated using isothermal and non-isothermal TGA, as well as oven, and samples were analyzed by LC-UV. In the isothermal TGA the ALG was subjected to 150, 155, 160, 165, 170 °C until a mass loss of 10% and the data were analyzed by the Arrhenius method. In non-isothermal TGA the heating rates were varied using 2.5, 5.0, 10.0 and 15.0 °C/min until 500 °C. Data were analyzed by the Ozawa and Kissinger method. In oven the drug was subjected to 130, 140, 150, 155, 160, and 170 °C. The kinetic parameters were obtained by Arrhenius. ALG follows zero-order degradation, where the rate of degradation is independent of the concentration of any reagent. Mass loss is related to chemical reactions. The kinetic parameters varied according to the applied mathematical model. The activation energy ranged from 26 to 45 kcal / mol. The degraded drug was shown to be less toxic in cytotoxicity assay using CRIB cells than the non-degraded drug. The methods developed and the characterization performed proved to be useful for adequate quality control tests of the drug.
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Wood, Matthew. "Analysis of near fields and radiation of a printed circuit via hole." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2008. http://theses.library.uwa.edu.au/adt-WU2009.0053.
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Electromagnetic compatibility remains an important topic in the design and manufacturing of printed circuit boards (PCBs). Compatibility of these devices with their surroundings is becoming increasingly difficult as a modern PCB can have hundreds or thousands of parts, operating on many layers, and all at high speed. One such part is a via and its clearance, or via hole, commonly required in multilayer circuits where vertical connections between layers are used. The via hole may be exposed to large electromagnetic fields within the PCB. Although electrically small, the via hole provides a pathway for the fields to excite the exterior, either directly or through coupling to adjacent structures. To quantify this process, the near fields and radiation of an excited via hole are analysed, and are the focus of this thesis. The near fields of the via hole are first decoupled into electric and magnetic fields of the 'static' type. In both cases a series solution for two regions, one outside, and one inside the layers is constructed. The coefficients of the terms of the series are chosen to best satisfy the boundary behaviour of the fields on the conducting surfaces and across the hole. The criteria for assessing quality of the solution is based on the least squares method (LSM). Linear equation systems for both models are derived, and as no numerical integration or discretisation is required, an efficient and robust implementation to find the near fields is developed. Transformation into the far field is then achieved through surface integration of relevant field quantities close to the via hole. The far fields are best viewed as that due to two dipoles, of the magnetic and electric type, with strength and orientation depending on how the via hole is excited. It is shown that the two dipole model is sufficient to find the radiation from a 1mm diameter via hole at a frequency up to 8 GHz. Of further interest is how the choice of via hole dimensions affects the dipole moments and the near fields solved earlier are a key to this understanding.
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Daneluti, André Luís Maximo. "Estudo termoanalítico envolvendo estabilidade e pré-formulação de ácido fítico livre/emulsão." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-15082013-092040/.
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O presente trabalho teve como objetivo a aplicação da análise térmica para caracterização, avaliação da estabilidade e decomposição térmica do ácido fítico e dos componentes da formulação farmacêutica preparada. Os estudos de pré-formulação de forma farmacêutica semissólida (emulsão), utilizada para o tratamento da hipercromia, e os estudos para determinação de parâmetros cinéticos foram desenvolvidos utilizando-se técnicas termoanalíticas (calorimetria exploratória diferencial, termogravimetria e termogravimetria derivada), análise elementar (C, H e N), espectroscopia de absorção na região infravermelho e potenciometria. Primeiramente, identificaram-se as amostras de ácido fítico e ácido kójico, a partir da análise elementar e espectroscopia de absorção na região infravermelho e potenciometria (apenas no caso do ácido fítico). Foram avaliados, também por espectroscopia no infravermelho e análise elementar, os produtos intermediários da decomposição térmica do ácido fítico. Foi traçado o perfil termoanalítico do ácido fítico e de todos os componentes presentes na emulsão. Devido ao perfil termogravimétrico apresentado pelo ácido fítico, com duas etapas principais de perda de massa (desidratação e decomposição térmica), realizou-se um estudo cinético dessas etapas, empregando métodos termogravimétricos não isotérmico. A partir das curvas TG/DTG e DSC do ácido fítico e das misturas físicas de todos os componentes da emulsão (1:1), constatou-se a interação entre as misturas físicas ácido fítico/EDTA; ácido fítico/ácido kójico; e ácido fítico/óleo de silicone. A partir da espectroscopia de absorção na região infravermelho constatou que apenas a mistura física ácido fítico/ácido kójico teve interação. Os resultados do estudo da cinética de volatilização do BHT, pôde-se estimar o tempo de volatilização da amostra durante o preparo de emulsões. No estudo do comportamento térmico das emulsões, foi possível concluir que a adição de ácido kójico aumenta a estabilidade térmica da emulsão. Na comparação dos resultados da primeira etapa de perda de massa da curva DTG, foi possível constatar que a emulsão de ácido fítico apresentou estabilidade térmica superior em relação às outras emulsões.This study aims the application of thermal analysis for characterization, evaluation of stability and thermal decomposition of phytic acid and components of its pharmaceutical formulation. The pre-formulation studies of pharmaceutical semi-solid (emulsion) used for the treatment of hyperpigmentation and studies for determination of kinetic parameters were developed using thermoanalytical techniques (differential scanning calorimetry, thermogravimetry and derivative thermogravimetry), elemental analysis C, H and N, and infrared absorption spectroscopy and potentiometry. Inicially it was identified samples of phytic acid and kojic acid through the techniques of elemental analysis and infrared absorption spectroscopy and potentiometry (just in case of phytic acid). The intermediate products of thermal decomposition of phytic acid were also evaluated by infrared spectroscopy and elemental analysis. The profile of phytic acid and thermal properties of all components present in the emulsion were cataloged. Due to the thermogravimetric profile presented by phytic acid, with two main stages of mass loss (dehydration and thermal decomposition), it was performed a kinetic study of these steps, using non-isothermal thermogravimetric methods. Starting from curves TG / DTG and DSC acid phytic and physical mixtures of all components of the emulsion (1:1), the interaction was found between the mixtures: phytic acid / EDTA, phytic acid / kojic acid and phytic acid / silicone oil. In infrared spectroscopy found that only physical mixture phytic acid / kojic acid had interaction. By studying the kinetics of volatilization of BHT, it was possible to estimate the time of volatilization of the sample during the preparation of emulsions. In the study of the thermal behavior of the emulsions was concluded that the addition of kojic acid increases the thermal emulsion stability. By comparing the results of the first stage of mass loss DTG curve, it is possible to determine that the emulsion of phytic acid showed a higher thermal stability relative to the others emulsions.
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Penny, Lori Lynn. "The Kodály Method and Tonal Harmony: An Issue of Post-secondary Pedagogical Compatibility." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23132.
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This study explores the topic of music theory pedagogy in conjunction with the Kodály concept of music education and its North-American adaptation by Lois Choksy. It investigates the compatibility of the Kodály Method with post-secondary instruction in tonal harmony, using a theoretical framework derived from Kodály’s methodology and implemented as a teaching strategy for the dominant-seventh chord. The customary presentation of this concept is authenticated with an empirical case study involving four university professors. Subsequently, Kodály’s four-step instructional process informs a comparative analysis of five university-level textbooks that evaluates the sequential placement of V7, examines the procedure by which it is presented, and considers the inclusion of correlated musical excerpts. Although divergent from traditional approaches to tonal harmony, Kodály’s principles and practices are pedagogically effective. By progressing from concrete to abstract, preceding symbolization with extensive musical experience, conceptual understandings are not only intellectualized, but are developed and internalized.
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Skousen, Darrell John. "Design Exploration and Analysis of Carbon-Infiltrated Carbon Nanotube Vascular Stents." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4001.
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The purpose of this research was to design, develop, and test coronary stent designs composed of carbon-infiltrated carbon nanotubes (CI-CNTs). Coronary stents currently have two major complications: restenosis and thrombosis. CI-CNT stents have potential to address both of these issues, and therefore may provide improved clinical outcomes. CI-CNT stent geometry is patterned using high-resolution photolithography that provide advantages in design possibilities.To develop a coronary stent, a standard design process was followed including: background, design specifications, concept generation, development, analysis, and testing. Background research was first completed and general design specifications for coronary stent performance were compiled. Multiple design concepts were generated, evaluated, and finally a design was selected. This stent design was further developed and optimized using analytical tools along with finite element analysis. This stent design used tapered struts in repeating segments to reduce stress and improve radial force. The design was modeled and analyzed as both a flat geometry as well as in a cylindrical configuration. Mechanics of materials equations and geometry specific finite element analysis were used to guide the final coronary stent design. The stent design was tested mechanically, and additional tests were performed to verify the blood compatibility of the CI-CNT material. The flat version of the stent design was manufactured and mechanically tested to verify performance. The performance of the cylindrical stent configuration was analyzed using an FE model of an atherosclerotic artery. This arterial FE model was created and validated by analyzing balloon angioplasty of a common stainless steel stent. The biocompatibility of CI-CNTs was explored and studied. Blood compatibility testing of CI-CNT samples was performed with results comparable in performance to stainless steel. A method of stent deployment was planned, and several other stent design concepts were analyzed. This research demonstrates that a functioning coronary stent can be manufactured from CI-CNTs. The optimized design has potential to address problems currently associated with stents. However, a major challenge for CI-CNT stent designs is meeting the design requirement of sufficient radial force. CI-CNT stents also need to have excellent blood compatibility to justify being used in stent applications.
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Young, William Albert II. "A Team-Compatibility Decision Support System to Model the NFL Knapsack Problem: An Introduction to HEART." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1273158239.
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Ferber, De Vieira Lessa Moisés. "Metodologias para análise de incertezas paramétricas em conversores de potência." Phd thesis, Ecole Centrale de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00999588.
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Le développement de la technologie des semi-conducteurs dans les trente dernières années a augmenté le nombre des nouvelles applications dans lesquelles les dispositifs d'électronique de puissance sont utilisés. L'augmentation de la rapidité de commutation des transistors a permis que la conversion de puissance se produise de façon de plus en plus performante. Cet avantage apporte un nouveau challenge dans la phase de conception, lié à la Compatibilité Électromagnétique. En effet, les impulsions rapides de tension et courant dans les convertisseurs de puissance sont une source d'émissions électromagnétiques conduites indésirables. Des méthodologies de modélisation précises, qui prennent en compte une grande partie des effets parasites, ont été développées pour évaluer le niveau de ces émissions conduites. Lorsque ces méthodologies sont confrontées aux mesures, les résultats sont en concordance dans une large gamme de fréquence, elles peuvent donc être considérées comme des outils fiables de pronostic. Néanmoins, la plupart des paramètres du modèle d'un système électronique ne peuvent pas réellement être déterminés précisément : les conditions d'opération sont souvent mal connues (variations de température ou d'humidité) ; les paramètres caractéristiques des composants présentent une certaine dispersion de production ; des interférences externes sont imprévisibles. Dans ce contexte, il est intéressant de développer des méthodologies de modélisation qui soient capables de prendre en compte des incertitudes paramétriques. Dans cette thèse, deux méthodologies d'analyse d'incertitudes, adaptées aux convertisseurs de puissance, sont proposées. Les incertitudes paramétriques sont modélisées en utilisant des fonctions de densité de probabilité et l'objectif de l'analyse proposée est de déterminer les moments statistiques, la fonction de densité de probabilité ou la limite supérieure probabiliste des émissions conduites d'un convertisseur de puissance quelconque. Des techniques pour aborder les difficultés liées aux non-linéarités, au temps de simulation important et au nombre élevé de dimensions sont discutées. Les méthodologies proposées sont appliquées à des problèmes test et à des problèmes réels, et les résultats sont comparés aux méthodologies classiques. La précision des résultats des méthodologies proposées est similaire aux techniques classiques, mais le temps de calcul est considérablement réduit. Finalement, ce travail ouvre des possibilités de développements nouveaux pour l'analyse des incertitudes des systèmes non-linéaires et à grande échelle.
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Seaver, George A. "An electromagnetic compatibility analysis of the AN/URC-109 HF Wideband Communication System as installed on the LHD-1 Amphibious Assault Ship." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23025.
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The purpose of this study was to evaluate the performance of the AN/URC-109 HF Wideband Communication System as it is to be installed on the LHD-1 Amphibious Assault Ship. The system is configured so that as many as twenty-two HF transmitters can be operated simultaneously. The COSAM II(DECAL/PECAL)Wideband and Narrowband RF Architecture Analysis Program was used in conducting the evaluation. The program was first run in the necessary desired power mode to determine if any of the 506 possible RF coupling paths would have unsatisfactory interference levels and to determine the mean necessary desired power for each receiver. Then the program was run in the system performance score mode to evaluate the performance of each of the twenty-three receivers. Although two of the receivers had marginally unsatisfactory scores, the overall system performance was determined to be satisfactory, with an average performance score of 84%. (Theses) (rh)
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Lopes, De Sousa. "An analysis of the compatibility of Mozambican law with international human rights law relating to people living with HIV in the workplace." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/53147.
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The objective of this study is to analyze the compatibility of Mozambican legislation concerning HIV and AIDS (Law 5/2002 of 5 February 2002, Law 23/2007 of 1 August 2007, Law 12/2009 of 12 March 2009 and Law 19/2014 of 27 August 2014) with international human right standards for the protection of the fundamental rights and freedom of people living with HIV (PLHIV) in the workplace, in Mozambique. In particular, it critically looks at issues surrounding freedom of thought and conscience, criminalization of transmission of HIV and its impact on the human rights of PLHIV at the workplace, as well as issues of gender equality and discrimination and stigmatization under Mozambican law.
The study attempts to offer some technical and legal solutions to these problems in order to fill the existing gaps in the law, with the intention of bringing the local legal framework in to conformity with the international human rights law that protects PLHIV at the workplace.
Several challenges impeded the attainment of the objective of the study. The main challenge was the lack of literature that focuses on the subject. The study concludes that there is the need to incorporate fundamental principles of human rights, such as those of equality and non-discrimination, the right to freedom to movement and freedom of conscience into Mozambican legislation concerning HIV and AIDS in the workplace.Mini Dissertation (LLM)--University of Pretoria, 2015.
Centre for Human Rights
LLM
Unrestricted
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Toma, Lucian Adrian. "Compatibilités fonctionnelles des systèmes mécaniques déformables=Functional Compatibility of the Flexible Mechanical Systems." Lyon, INSA, 1997. http://www.theses.fr/1997ISAL0010.
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La conception des systèmes mécaniques nécessite une prévision fine du comportement mécanique. En particulier, la proposition d'une architecture de machine doit être qualifiée par une détermination des mobilités et des hyperstatismes. Dans ce travail, on propose une méthodologie d'analyse des mobilités et des hyperstatismes, développée pour l’étude des mécanismes 3D multi-boucles. L'analyse des hyperstatismes menée sur la base d'une décomposition topologique, alors que les mobilités sont déterminées à partir d'une analyse globale du système, conditions réelles telles que déformabilité au système, jeux dans liaisons, sont prises en compte. Les déplacements sont obtenus avec des outils de calcul par éléments finis (ASSYM, SPIRO). Une analyse fonctionnelle du système mécanique étudiée est alors menée avec le lo giciel MOBI écrit sur la base de la méthodologie précédente. Les systèmes mécaniques sont ainsi analysés par des logiciels de calcul spécialisés, qui échangent leurs données et résultats dans le contexte d'une conception intégrée. Des études de fonctionnement de systèmes mécaniques industriels ont été menées. Les résultats numériques ainsi trouvés caractérisent la fonctionnalité du système mécanique dans les conditions réelles de travail. Des verifications expérimentales ont confirmé la méthodologie proposéeThe design of mechanical systems needs a fine definition of the mechanical behaviour. Particularly, the proposal of a machine architecture must be qualified by the determination of redundant constraints and mobility. In this work, we propose a methodology of mobility and redundant constraint analysis, developed from the study of spaced multiple close loops mechanisms. The analysis of the redundant constraints is develop on the basis of a topological decomposition of the mechanism, while motilities are determined from a global anal' sis of the s stem. Real conditions like the system flexibility and the clearances of joints are taken into account. Displacements are obtained with calculation tools based on the finite element method (ASSYM, SPIRO). A functional ~ analysis of the mechanical system is developed with the software MOBI, developed from the methodology presented before. Mechanical systems are thus analyzed by specialized software that exchange their data and results in the context of an integrated conception. Studies of industrial systems have been made. The numerical results founded, characterize the functionality of the mechanical system in actual working conditions. Experimental verifications have confirmed this methodology
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Neto, Helio Salvio. "Estudo de compatibilidade fármaco/excipiente e de estabilidade do prednicarbato por meio de técnicas termoanalíticas, e encapsulação do fármaco em sílica mesoporosa do tipo SBA-15." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/9/9139/tde-22042010-112457/.
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Nos últimos 30 anos, a incidência da dermatite atópica aumentou de 4 para 12% em toda população mundial, acarretando um aumento significativo nos custos envolvidos no seu tratamento, tanto para as famílias, quanto para os sistemas de saúde. Para a dermatite atópica que ocorre de maneira suave à moderada, os corticosteróides de uso tópico são usualmente utilizados. Dentre eles, o prednicarbato se destaca por ser um potente agente antiinflamatório e por ter um baixo potencial em causar atrofia de pele. Neste trabalho, inúmeras técnicas de análise e de caracterização, em especial as técnicas de DSC e TG, foram utilizadas para auxiliar no desenvolvimento racional de uma formulação farmacêutica semi-sólida de uso tópico contendo o prednicarbato como ingrediente ativo. Diversas aplicações da análise térmica voltada à tecnologia farmacêutica foram apresentadas. A estrutura química do produto sólido intermediário originado na primeira etapa do processo de decomposição térmica do prednicarbato foi determinada a partir da associação dos resultados termoanalíticos àqueles obtidos pelas técnicas de RMN, CLAE-EM/EM e espectroscopia de absorção na região do infravermelho. Avaliando-se os resultados, foi possível correlacionar à etapa de decomposição térmica do fármaco com a eliminação do grupo químico carbonato ligado ao seu C17. As curvas TG/DTG das misturas físicas 1:1 entre o prednicarbato e os excipientes álcool estearílico e estearato de glicerila mostraram uma redução da temperatura em que o processo de decomposição térmica do fármaco se inicia (Tonset TG), enquanto que para a mistura prednicarbato/pirrolidona carboxilato sódio, a presença do excipiente pouco interferiu no início do processo ( ΔTMáx dm / dt=0 DTG = 3 ºC), mas originou um aumento da taxa de decomposição (ΔTpico DTG = 35 ºC). A alteração da estabilidade térmica do prednicarbato evidenciada no estudo de compatibilidade com o excipiente estearato de glicerila foi também observada na avaliação da Ea desta reação de decomposição. A redução do valor da Ea da reação de decomposição do fármaco na mistura binária em relação à amostra do fármaco isolado confirmou a alteração. Os resultados obtidos no estudo cinético a partir do método não-isotérmico (OZAWA, 1965) e isotérmico (equação de Arrhenius) apresentaram semelhante redução percentual do valor de Ea, aproximadamente igual a 45%. A análise térmica também foi utilizada na avaliação da amostra proveniente do processo de encapsulação do prednicarbato em sílica mesoporosa altamente ordenada do tipo SBA-15. Com a redução da taxa de decomposição térmica do fármaco encapsulado (Δm600-850ºC TG = 20%) foi possível atribuir à encapsulação, uma função protetora. Os resultados obtidos pela técnica de adsorção de N2 confirmaram a presença do prednicarbato no interior dos poros da sílica. Assim como a função protetora fornecida pela sílica ao prednicarbato, a avaliação comparativa entre os perfis de liberação do fármaco livre e encapsulado permitiu atribuir à encapsulação o diferente perfil de liberação observado. Deste modo, a partir dos resultados obtidos no decorrer deste trabalho, foi possível observar que a análise térmica atuou como parte integrante de diversas etapas do extenso processo que envolve o desenvolvimento de um medicamento.In the last 30 years the incidence of atopic dermatitis increased from 4 to 12% around the world, resulting in a significant increase in costs involved to its treatment, both for families and for health systems. For atopic dermatitis that occurs on a weak to moderate way, the topical corticosteroids are frequently used. Among them, the prednicarbate has special attention due to its potent anti-inflammatory activity and due to its low potential in causing skin atrophy. In this work, several analytical and characterization techniques, especially the DSC and TG, were used to assist in the rational development of a semi-solid pharmaceutical formulation for topical use containing prednicarbate as active ingredient. A lot of applications of thermal analysis focused on pharmaceutical technology were presented. The elucidation of chemical structure of the solid product formed at the first thermal decomposition step of the prednicarbate was performed using the thermoanalytical results and results obtained by NMR, HPLC-MS/MS and infrared spectroscopy. Assessing the results, it was possible to correlate the thermal decomposition step of prednicarbate with to elimination of carbonate group bonding to its C17, and subsequent formation of double-bond between C17 and C16. The TG/DTG curves of the binaries mixtures between the drug and stearyl alcohol and glyceryl stearate showed a significant change in the first thermal decomposition step of prednicarbate. For the 1:1 physical mixture between prednicarbate and sodium pirrolidone carboxylate, the TG/DTG curves showed an increase in the thermal decomposition rate of the drug (ΔTpico DTG = 35 ºC), but the presence of pirrolidone almost did not interfere at the beginning of this first thermal decomposition stage (ΔTMáx dm / dt=0 DTG = 3 ºC). The change of thermal stability of prednicarbate observed in the compatibility study with glyceryl stearate excipient was also observed during the evaluation of Ea value of this decomposition reaction. The reduction of Ea value to this reaction in binary mixture, when compared with Ea obtained by the sample of the prednicarbate alone, confirmed this modification. The results obtained in kinetic study using the isothermal method (Arrhenius equation) and non-isothermal method (OZAWA, 1965) showed a similar reduction of Ea value, approximately equal to 45%. Thermal analysis was also used in the assessment of sample from loading process of prednicarbate in mesoporous silica type SBA-15. The reduction observed in the rate of thermal decomposition reaction to the drug-loaded (Δm600-850ºC TG = 20%) allowed attributing the protective function to the loading. The results obtained by N2 absorption technique confirmed the presence of drug absorption into SBA-15 pores. The comparative evaluation of drug release profiles between prednicarbate free and loaded allows assigning to loading the different release profile observed. Therefore, the results obtained in this work showed thermal analysis as an important tool in several stages of the extensive process that involves the development of a pharmaceutical formulation.
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Al-Jerafi, Wasim Yahya. "Yemen's ratification of the New York Convention : an analysis of compatibility and the uniform interpretation of Articles V(1)(a) and V(2)(b)." Thesis, University of Leicester, 2013. http://hdl.handle.net/2381/28010.
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The United Nations Convention on the Recognition and Enforcement of Foreign Arbitral Awards, also known as the New York Convention, is the backbone of the universal mechanism for the enforcement system of foreign arbitral awards. Despite its universal success, Yemen has yet to ratify the Convention. Although Yemen is introducing new legislation on international arbitration, this legislation fails to provide clear guidance on the grounds for refusal of enforcement of foreign arbitral awards, unlike those listed in Article V of the New York Convention, which constitutes the core of the Convention. This thesis aims to examine the grounds of invalidity of arbitration agreements, and the public policy violation embodied in Articles V(1)(a) and V(2)(b) of the Convention. It adopts doctrinal and functional comparative approaches that comprise theoretical discussion and interpretation, as well as application by the courts of contracting States- paying particular attention to English legal practice. This thesis then also critically analyses the corresponding provisions under the new Yemeni legislation. Through a careful comparative analysis, the thesis also seeks to evaluate the degree of compatibility between the grounds’ applications and the relevant principles in operation in Yemen, which are derivative from Islamic Shari 'ah law. The thesis finds that the new Yemen’s legislation on international arbitration has several shortcomings regarding the specific areas of the study, and it makes a set of recommendations for legislative improvement. Moreover, the thesis demonstrates how the Convention is compatible with Shari’ah principles, thereby showing that there are no considerable barriers to its ratification by Yemen. Ultimately, in order to rectify the shortcomings in Yemen’s impending legislation on international arbitration, it is recommended that the Yemeni government considers ratifying the New York Convention. This progressive step will help Yemen adopt a pro-enforcement policy towards foreign arbitral awards and establish Yemen as an arbitration-friendly jurisdiction.
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Binti, Md Isa Yusramizza. "Harm reduction in the context of drug use in Malaysia, a critical analysis of its justification and its compatibility with the criminal justice approach." Thesis, Lancaster University, 2015. http://eprints.lancs.ac.uk/76877/.
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The emergence of a harm reduction approach for drug users has prompted extensive debate in many countries. However, in Malaysia the pertinent issues regarding the bases of such an approach and its consonance with the criminal justice approach have received little attention. This thesis examines the justifications for the harm reduction approach in Malaysia, its compatibility with the existing criminal justice approach and ways of reconciling both approaches in the event of conflicts between them within a socio-legal sphere of analysis. Building on philosophical and scientific judgements, this thesis argues that Malaysia should implement the harm reduction approach and argues that it is congruent with public health ethics, utilitarianism, human rights protection and the Islamic principles of ‘hajiyyat’ (needs), ‘darurah’ (necessity) and ‘al-∂arar al-ashaddyuzalu bi’l-∂arar al-akhaff’(tolerating a lesser harm to eliminate a greater one). The approach also fits in with the abstinence orientation adopted within drug prohibition policy and the confines of the international drug control conventions. The Methadone Maintenance Therapy (MMT) and Needle and Syringe Exchange Programme (NSEP) harm reduction measures are further justified by their efficacy and cost-effectiveness in decreasing drug use and HIV pathogen transmission. This thesis also argues that any alleged unintended adverse consequences of harm reduction are limited or absental together. Moreover, with regard to the issue of compatibility between the harm reduction and criminal justice approaches, this thesis emphasises that there are significant theoretical and practical conflicts between the two approaches as they are currently understood and practised in Malaysia. The tensions arises principally from law enforcement practices, predominantly the street-level policing activities, reflecting the lack of commitment of criminal justice actors to the harm reduction strategy, despite the existence of government initiatives to support harm reduction. The thesis suggests important options for reconciling both approaches, particularly at a conceptual level. Finally, this thesis argues for incorporating the harm reduction approach as an important component of overall drug policy under a sustained prohibitionist framework.
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Kouassi, Attibaud. "Propagation d'incertitudes en CEM. Application à l'analyse de fiabilité et de sensibilité de lignes de transmission et d'antennes." Thesis, Université Clermont Auvergne (2017-2020), 2017. http://www.theses.fr/2017CLFAC067/document.
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De nos jours, la plupart des analyses CEM d’équipements et systèmes électroniques sont basées sur des approches quasi-déterministes dans lesquelles les paramètres internes et externes des modèles sont supposés parfaitement connus et où les incertitudes les affectant sont prises en compte sur les réponses par le biais de marges de sécurité importantes. Or, l’inconvénient de telles approches est qu’elles sont non seulement trop conservatives, mais en outre totalement inadaptées à certaines situations, notamment lorsque l’objectif de l’étude impose de prendre en compte le caractère aléatoire de ces paramètres via des modélisations stochastiques appropriées de type variables, processus ou champs aléatoires. Cette approche probabiliste a fait l’objet ces dernières années d’un certain nombre de recherches en CEM, tant au plan national qu’au plan international. Le travail présenté dans cette thèse est une contribution à ces recherches et a un double objectif : (1) développer et mettre en œuvre une méthodologie probabiliste et ses outils numériques d’accompagnement pour l’évaluation de la fiabilité et l’analyse sensibilité des équipements et systèmes électroniques en se limitant à des modélisations stochastiques par variables aléatoires ; (2) étendre cette étude au cas des modélisations stochastiques par processus et champs aléatoires dans le cadre d’une analyse prospective basée sur la résolution de l’équation aux dérivées partielles des télégraphistes à coefficients aléatoires.L’approche probabiliste mentionnée au point (1) consiste à évaluer la probabilité de défaillance d’un équipement ou d’un système électronique vis-à-vis d’un critère de défaillance donné et à déterminer l’importance relative de chacun des paramètres aléatoires en présence. Les différentes méthodes retenues à cette fin sont des adaptations à la CEM de méthodes développées dans le domaine de la mécanique aléatoire pour les études de propagation d’incertitudes. Pour le calcul des probabilités de défaillance, deux grandes catégories de méthodes sont proposées : celles basées sur une approximation de la fonction d’état-limite relative au critère de défaillance et les méthodes de Monte-Carlo basées sur la simulation numérique des variables aléatoires du modèle et l’estimation statistique des probabilités cibles. Pour l’analyse de sensibilité, une approche locale et une approche globale sont retenues. Ces différentes méthodes sont d’abord testées sur des applications académiques afin de mettre en lumière leur intérêt dans le domaine de la CEM. Elles sont ensuite appliquées à des problèmes de lignes de transmission et d’antennes plus représentatifs de la réalité.Dans l’analyse prospective, des méthodes de résolution avancées sont proposées, basées sur des techniques spectrales requérant les développements en chaos polynomiaux et de Karhunen-Loève des processus et champs aléatoires présents dans les modèles. Ces méthodes ont fait l’objet de tests numériques encourageant, mais qui ne sont pas présentés dans le rapport de thèse, faute de temps pour leur analyse complèteNowadays, most EMC analyzes of electronic or electrical devices are based on deterministic approaches for which the internal and external models’ parameters are supposed to be known and the uncertainties on models’ parameters are taken into account on the outputs by defining very large security margins. But, the disadvantage of such approaches is their conservative character and their limitation when dealing with the parameters’ uncertainties using appropriate stochastic modeling (via random variables, processes or fields) is required in agreement with the goal of the study. In the recent years, this probabilistic approach has been the subject of several researches in the EMC community. The work presented here is a contribution to these researches and has a dual purpose : (1) develop a probabilistic methodology and implement the associated numerical tools for the reliability and sensitivity analyzes of the electronic devices and systems, assuming stochastic modeling via random variables; (2) extend this study to stochastic modeling using random processes and random fields through a prospective analysis based on the resolution of the telegrapher equations (partial derivative equations) with random coefficients. The first mentioned probabilistic approach consists in computing the failure probability of an electronic device or system according to a given criteria and in determining the relative importance of each considered random parameter. The methods chosen for this purpose are adaptations to the EMC framework of methods developed in the structural mechanics community for uncertainty propagation studies. The failure probabilities computation is performed using two type of methods: the ones based on an approximation of the limit state function associated to the failure criteria, and the Monte Carlo methods based on the simulation of the model’s random variables and the statistical estimation of the target failure probabilities. In the case of the sensitivity analysis, a local approach and a global approach are retained. All these methods are firstly applied to academic EMC problems in order to illustrate their interest in the EMC field. Next, they are applied to transmission lines problems and antennas problems closer to reality. In the prospective analysis, more advanced resolution methods are proposed. They are based on spectral approaches requiring the polynomial chaos expansions and the Karhunen-Loève expansions of random processes and random fields considered in the models. Although the first numerical tests of these methods have been hopeful, they are not presented here because of lack of time for a complete analysis
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Loreggia, Fabio. "The ban of religious symbols in primary and secondary schools in France : A short analysis of its compatibility with Pettit’s theory of liberty as non-domination." Thesis, Uppsala universitet, Filosofiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-357913.
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Jeyisanker, Kalyani. "Analysis of Water Seepage Through Earthen Structures Using the Particulate Approach." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002783.
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Mustaffa, Aminuddin. "Rights of children in criminal proceedings : a comparative analysis on the compatibility of the Malaysian juvenile justice system with the standards of the Convention on Rights of Children (CRC)." Thesis, Lancaster University, 2017. http://eprints.lancs.ac.uk/86691/.
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The rights of children in conflict with the law has always been a central subject of juvenile justice which attracts an intense academic, political and media interest and debate. In this respect, the United Nations Convention on Rights of Children (CRC), which was adopted on 20th November 1989, has laid down international standards and legal framework on rights of children under juvenile justice. The CRC’s standards on this matter have served as a useful guideline and benchmark to state parties in determining and assessing the rights of children in criminal proceedings. As a country that has ratified the CRC in 1995, Malaysia is duty-bound to strive towards full implementation of the requirements of the CRC. This study will specifically focus on examining the legal rights of children in criminal proceedings under both the CRC’s standards and the Malaysian juvenile justice system. Using the CRC’s standards as a guideline and a benchmark, the study aims to assess the rights of children in criminal proceedings under the current Malaysian juvenile justice system. The study will attempt to critically and comparatively analyze to what extent the Malaysian juvenile justice system on the rights of children in criminal proceedings measure up with the CRC’s standards. The study concludes that legal reform of current legal framework and policy is necessary to improve and strengthen rights of children in criminal proceedings under Malaysian juvenile justice system. Aiming towards full implementation of the CRC’s standards on this aspect, the study provides recommendations and suggestions to be considered in respect of certain imprecision and loopholes in laws as well as policy under the existing Malaysian juvenile justice system.
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Noga, Aljosa. "THE TRAGEDY OF OUTER SPACE AS A GLOBAL COMMONS AND PUBLIC INTERNATIONAL LAW : An Analysis of the Law Governing Outer Space and its Compatibility with Behavioral Economic Models on Resource Extraction." Thesis, Örebro universitet, Institutionen för juridik, psykologi och socialt arbete, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-36216.
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This thesis examines the compatibility of public international law with behavioral economic models on resource extraction, specifically those theories that express what tragedy and fears one ought to expect from such endeavors. The reason behind the analysis is to examine the rigidity and ability of the law to cope with resource extraction in outer space. As will be shown in this thesis, the law as it stands today is inadequate to cope with such fears for primarily four reasons. Firstly, the principle of freedom entitles States to exploit resources in outer space and can thus enable tragedy, i.e. overexploitation of resources. Secondly, sovereignty entitles States to act selfishly when extracting resources because sovereignty at its core amounts to a right for States to conduct any functions they see fit, as long as no violations of international law occur. Thirdly, States are not obliged to cooperate for the sake of resource management, since obligations to cooperate under customary law and treaty law do not stretch that far. And lastly, general international law is the channel for finding solutions in order to prevent tragedy to outer space as a resource domain, but at the present, there are no norms that can cope with the fears expressed in the discourse on the commons.
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Sartori, Carlos Antonio França. "Aspectos de compatibilidade eletromagnética em estruturas atingidas por descargas atmosféricas." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-30032001-153420/.
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O objetivo deste trabalho é apresentar uma metodologia de cálculo da distribuição de correntes e dos campos eletromagnéticos e tensões induzidas associadas em estruturas atingidas diretamente por descargas atmosféricas que, agregada à filosofia geral de compatibilidade eletromagnética (CEM), constitua uma abordagem inovadora e abrangente quando comparada às recomendações de proteção contra descargas atmosféricas atuais. Propõe-se, portanto, desenvolver uma metodologia que: · Constitua uma ferramenta de auxílio nas tomadas de decisões, aplicável desde a etapa de definição da arquitetura da estrutura e do leiaute dos equipamentos até a definição final da configuração do sistema de proteção contra descargas atmosféricas (S.P.C.D.A); · Possibilite a implementação de uma filosofia de proteção dos equipamentos e sistemas elétricos e eletrônicos contra descargas atmosféricas na qual se integre as recomendações tradicionais às necessidades atuais relacionadas à área de compatibilidade eletromagnética; · Seja abrangente e com grau de precisão satisfatório, quando comparadas com as recomendações atuais, com possibilidade de exploração dos valores das grandezas elétricas envolvidas no domínio do espaço e do tempo, e · Apresente simplicidade na implementação em computadores pessoais.The main purpose of this work is to present a suitable method for calculating the current distribution, the electric and magnetic field, and the induced voltage on electric circuits regarding a structure directly struck by lightning. Moreover, when the method is used together with the electromagnetic compatibility (EMC) requirements, it can provide the designer with a new and helpful methodology meeting the recent aspects or the state of the art on lightning protection systems (L.P.S). Thus, a methodology is proposed, which provides the L.P.S. design team with: · The availability to take technical decisions in all steps of the project, from the definition of the architecture of the structure to the definition of the best layout of L.P.S.; · Recommendations to achieve the EMC of the electric and electronic system, in addition to the traditional ones; · Reliable numerical results concerning simulations in the space and time-domain, and · Simple implementation in personal computers.
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Bienaise, Solène. "Tests combinatoires en analyse géométrique des données - Etude de l'absentéisme dans les industries électriques et gazières de 1995 à 2011 à travers des données de cohorte." Phd thesis, Université Paris Dauphine - Paris IX, 2013. http://tel.archives-ouvertes.fr/tel-00941220.
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La première partie de la thèse traite d'inférence combinatoire en Analyse Géométrique des Données (AGD). Nous proposons des tests multidimensionnels sans hypothèse sur le processus d'obtention des données ou les distributions. Nous nous intéressons ici aux problèmes de typicalité (comparaison d'un point moyen à un point de référence ou d'un groupe d'observations à une population de référence) et d'homogénéité (comparaison de plusieurs groupes). Nous utilisons des procédures combinatoires pour construire un ensemble de référence par rapport auquel nous situons les données. Les statistiques de test choisies mènent à des prolongements originaux : interprétation géométrique du seuil observé et construction d'une zone de compatibilité.La seconde partie présente l'étude de l'absentéisme dans les Industries Electriques et Gazières de 1995 à 2011 (avec construction d'une cohorte épidémiologique). Des méthodes d'AGD sont utilisées afin d'identifier des pathologies émergentes et des groupes d'agents sensibles.
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Roy, Amitava. "Dynamic and transient modelling of electrolysers powered by renewable energy sources and cost analysis of electrolytic hydrogen." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/10973.
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Hydrogen energy sector has gained significant attention worldwide but one of the key enabling components for its success would be cheaper and sustainable hydrogen production. Hydrogen could be produced directly from natural gas or coal etc; alternatively it could be produced by electrolysis of water powered by renewable energy sources, nuclear energy or fossil fuel. Wind energy is growing rapidly, which can produce cheap hydrogen. Electrolysers can be employed to control the frequency of the electricity grid while also making fuel as a by-product. This thesis concerns the intricacies of hydrogen production by electrolysers from renewable energy sources. A generalised, input-based mathematical model of the electrolyser has been developed for various subsystems, such as current-voltage, Faraday efficiency, gas production, gas purity, differential pressure, temperature subsystem, parasitic losses, gas losses and efficiencies at various stages of operation. Some empirical equations have been developed and some adjusted parameters have been used in the model. The model has been tested and verified against the experimental measurements. A generic method has been developed for modelling the Faraday efficiency. Model simulations have been carried out to investigate the sensitivity of the results to the value of the capacitance and how this affects the dynamic response of the electrolyser. A new sizing method of the electrolyser has been developed for a stand-alone energy system such as the HARI project. The electrolyser model has also been simulated for maximum and efficient hydrogen production in a directly coupled mode of electrolysers with solar PV arrays without the maximum power point (MPP) tracker, which leads to an interesting finding that "electrolysers should not be operated at MPP". It has also been found that the dynamic and intermittent power supply from renewables can damage the stability of electrolysers and reduce the energy capture. This is especially true for pressurised electrolysers, which are favoured by the industry at present. The in-depth theoretical and practical analysis of several aspects confirms - contrary to industry trends - that "Pressurised electrolysers are less energy efficient, less durable, more costly and not adequately compatible for renewable energy powered operation, especially in the stand-alone energy systems, compared to atmospheric electrolysers".
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Suchý, Marek. "Analýza rizik v procesu posuzování shody výrobků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229760.
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This Master’s thesis deals with the new approach and global policies and their consequences on the process of conformity assessment. Furthermore, the modules those are used for this assessment and risk analysis, which is essential in this process. The practical part is focused on an analysis of risks to the submersible pump sets series U with electric motor TU-85.
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Liu, Yaqing. "Transient Response of Grounding Systems Caused by Lightning: Modelling and Experiments." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4556.
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Moreau, Maxime. "Modélisation haute fréquence des convertisseurs d'énergie : application à l'étude des émissions conduites vers le réseau." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00579671.
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Ces travaux de recherche portent sur la problématique CEM (Compatibilité Electromagnétique) en électronique de puissance. Cette étude s'intéresse particulièrement à la modélisation HF (haute fréquence) des convertisseurs d'énergie dans le but d'étudier la propagation des perturbations conduites vers le réseau avec ou sans l'utilisation du RSIL (Réseau Stabilisateur d'Impédance de Ligne). Une première partie présente les outils de modélisation des sources de perturbation dans les convertisseurs statiques.La seconde partie est consacrée à la modélisation HF d'un système d'entraînement à vitesse variable. L'onduleur de tension triphasé est représenté par trois générateurs équivalents afin de reconstituer le découpage des tensions de sortie. Un modèle HF du câble blindé de 4 conducteurs tenant compte de la dissymétrie est ensuite proposé. Les résultats de simulation ont été validés par des relevés expérimentaux. La comparaison montre qu'il est possible de modéliser correctement le comportement HF du dispositif jusqu'à 20MHz.Une troisième partie porte sur la propagation des perturbations conduites vers le réseau sans RSIL. Il a fallu pour cela déterminer et modéliser l'impédance du réseau. L'influence du pont redresseur à diodes sur la propagation des perturbations de mode commun a ensuite été étudiée. Les résultats de simulation montrent que l'impact de ces perturbations sur la tension réseau est prépondérant lorsque le pont redresseur est à l'état bloqué. Les résultats expérimentaux ont permis de valider cette étude. Ce travail se termine par une étude préliminaire sur l'association de deux convertisseurs connectés localement à une même source d'énergie
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Řezníček, Zdeněk. "Numerická analýza vlivu elektromagnetických polí na malá letadla." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233656.
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This thesis deals with numerical analyses of electromagnetic fields on small aircraft with composite parts as an innovative way for assessment of their inherent protection against electromagnetic effects of outside environment in all development stages. It is concentrated for procedures of creation of geometrically and materially complex models for simulating calculations in the time as well as frequency domains, execution of the simulations itself and comparisons of results between the internal electromagnetic calculations and executed experimental tests. Achieved results were verified on a simplified reference model of aircraft's fuselage and two aircraft prototypes VUT100 and EV-55 of the company Evektor, spol. s r. o.
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Ponge, Julien. "Model based analysis of Time-aware Web Services Interactions." Clermont-Ferrand 2, 2008. http://www.theses.fr/2008CLF21840.
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Les services web gagnent de l'importance en tant que cadre facilitant l'intégration d'applications au sein et en dehors des frontières des entreprises. Il est accepté que la description d'un service ne devrait pas seulement inclure l'interface, mais aussi le protocole métier supporté par le service. Dans le cadre de ce travail, nous avons formalisé la catégorie des protocoles incluant des contraintes de temps (appelés protocoles temporisés) et étudié l'impact du temps sur l'analyse de compatibilité et de remplaçabilité. Nous avons formalisé les contraintes suivantes : les contraintes Clnvoke définissent des fenêtres de disponibilités tandis que les contraintes Mlnvoke définissent des délais d'expiration. Nous avons étendu les techniques pour l'analyse de compatibilité et de remplaçabilité entre protocoles temporisés à l'aide d'un mapping préservant la sémantique entre les protocoles temporisés et les automates temporisés, ce qui a défini la classe des automates temporisés de protocoles (PTA). Les PTA possèdent des transitions silencieuses qui ne peuvent pas être supprimées en général, et pourtant ils sont fermés par calcul du complément, ce qui rend décidable les différents types d'analyse de compatibilité et de remplaçabilité. Enfin, nous avons mis en oeuvre notre approche dans le cadre du projet ServiceMosaic, une plate-forme pour la gestion du cycle de vie des services web
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Almohsen, Fatma Khaled. "The compatibility of the Kuwait Project with the constitutional oil ownership concepts in the state of Kuwait : a critical and comparative legal analysis of the oil ownershp concepts of the United Kingdom and the state of Kuwait, with an analytical assessment of their application to the "Kuwait Project"." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=196003.
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Hindering important petroleum projects in Kuwait by the parliament under the pretext of preventing the violation of the oil ownership concepts included in the constitution is almost turning into a phenomenon. According to the Kuwaiti constitution, the natural resources are owned by the state, and consequently foreign oil ownership of national reserves is prohibited (Article 21 of the constitution). In addition, exploiting the national natural resources by other party than the state, though it is legally possibly, is restricted by several conditions (Article 152 of the constitution). The national petroleum project concerns the re-involvement of the international oil companies (IOCs) to develop production capacity from Kuwait’s northern oil fields, which is commonly known as the ‘Kuwait Project’, has met a considerable opposition by the parliament, and consequently has not been yet signed, in spite of the completion of its technical, financial and legal framework. The reason for opposing this project is that it, arguably, may include provisions contradicting with the constitutional framework for the exploitation of petroleum in Kuwait. Whether or not Kuwait’s oil ownership concepts stand as an obstacle to developing Kuwait’s oil production capacity requires examining the application of these concepts to the ‘Kuwait Project’. Such analysis will lead to accurately determine the effectiveness of these concepts when applied in practice and to identify aspects of possible incapability in addressing related issues.
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PEREIRA, CARPES JUNIOR WALTER. "Modelisation tridimensionnelle par elements finis destinee aux analyses de propagation d'ondes et de compatibilite electromagnetique." Paris 11, 2000. http://www.theses.fr/2000PA112140.
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Cette these porte sur le developpement de modeles numeriques bases sur les elements finis pour les analyses de propagation d'ondes et de compatibilite electromagnetique. Elle concerne des modelisations tridimensionnelles dans les domaines frequentiel et temporel. Les formulations developpees sont basees sur la resolution de l'equation d'onde en termes du vecteur champ electrique. Les elements d'arete sont utilises pour l'interpolation du champ sur des maillages conformes composes de tetraedres. L'analyse de problemes a domaine ouverte est faite en utilisant la condition aux limites absorbante de silver-muller pour la troncature du volume de calcul. Dans la formulation temporelle, les derivees par rapport au temps sont discretisees avec la methode de newmark, qui permet d'obtenir un schema pas a pas dans le temps inconditionnellement stable et avec une precision d'ordre deux. Le memoire est compose de cinq chapitres. Le chapitre premier presente le probleme general de la propagation d'ondes ainsi que sa discretisation avec les elements finis d'arete. Dans le second chapitre, la methode est validee dans l'etude de la propagation d'une onde en milieux dielectriques classiques et en milieu plasma. Le rayonnement d'une petite antenne est aussi etudie. Le chapitre trois presente l'application de la formulation temporelle associee a des techniques de traitement du signal dans l'obtention des frequences propres de cavites resonnantes. Dans le chapitre quatre, les formulations frequentielle et temporelle sont appliquees et comparees dans l'analyse du couplage d'une onde incidente avec un fil conducteur place a l'interieur d'un boitier metallique possedant une ouverture. Des approximations sont faites de facon a restreindre le domaine de calcul au volume du boitier. Dans le chapitre cinq, qui traite aussi de problemes de couplage onde/structure, des formulations plus generales, utilisant des conditions absorbantes, sont proposees.
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Qian, Zicheng. "p-adic and mod p local-global compatibility for GLn(ℚp)." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS137/document.
Full textAbstract:
Cette thèse est consacrée à deux aspects du programme de Langlands local p-adique et de la compatibilité local-global p-adique.Dans la première partie, j'étudie la question de savoir comment extraire, d'un certain sous-espace Hecke-isotypique de formes automorphes modulo p, suffisament d'invariants d'une représentation galoisienne. Soient p un nombre premier, n>2 un entier, et F un corps à multiplication complexe dans lequel p est complètement décomposé. Supposons qu'une représentation galoisienne automorphe continue r-:Gal(Q-/F)→GLn(F-p) est triangulaire supérieure et suffisament générique ( dans un certain sens ) en une place w au-dessus de p. On montre, en admettant un résultat d'élimination de poids de Serre prouvé dans [LLMPQ], que la classe d'isomorphisme de r-|_Gal(Q-p/Fw) est déterminée par l'action de GLn(Fw) sur un espace de formes automorphes modulo p découpé par l'idéal maximal associée à r- dans une algèbre de Hecke. En particulier, on montre que la partie sauvagement ramifiée de r-|_Gal(Q-p/Fw) est déterminée par l'action de sommes de Jacobi ( vus comme éléments de Fp[GLn(Fp)] ) sur cet espace.La deuxième partie de ma thèse vise à établir une relation entre les résultats précédents de [Schr11], [Bre17] and [BD18]. Soient E une extension finie de Qp suffisamment grande et ρp: Gal(Q-p/Qp)→GL3(E) une représentation p-adique semi-stable telle que la représentation de Weil-Deligne WD(ρp) associée a un opérateur de monodromie N de rang 2 et que la filtration de Hodge associée est non-critique. On sait que la filtration de Hodge de ρp dépend de trois invariants dans E. On construit une famille de représentations localement analytiques Σ^min(λ, L1, L2, L3) qui dépend de trois invariants L1, L2, L3 dans E et telle que chaque représentation contient la représentation localement algébrique Algotimes Steinberg déterminée par ρp. Quand ρp provient, pour un groupe unitaire convenable G/Q, d'une représentation automorphe π de G(A_Q) avec un niveau fixé U^p premier avec p, on montre ( sous quelques hypothèses techniques ) qu'il existe une unique représentation localement analytique dans la famille ci-dessus qui est une sous-représentation du sous-espace Hecke-isotypique associé dans la cohomologie complétée de niveau U^p. On rappelle que [Bre17] a construit une famille de représentations localement analytiques qui dépend de quatre invariants (voir (4) dans [Bre17]) avec une propriété similaire. On donne un critère purement de théorie de représentation: si une représentation Π dans la famille de Breuil se plonge dans un certain sous-espace Hecke-isotypique de la cohomologie complétée, alors elle se plonge nécessairement dans une Σ^min(λ, L1, L2, L3) pour certains choix de L1, L2, L3 dans E qui sont déterminés explicitement par Π. De plus, certains sous-quotients naturels de Σ^min(λ, L1, L2, L3) permettent de construite un complexe de représentations localement analytiques qui "réalise" l'objet dérivé abstrait Σ(λ, underline{L}) defini dans [Schr11]This thesis is devoted to two aspects of the p-adic local Langlands program and p-adic local-global compatibility.In the first part, I study the problem of how to capture enough invariants of a local Galois representation from a certain Hecke-isotypic subspace of mod p automorphic forms. Let p be a prime number, n>2 an integer, and F a CM field in which p splits completely. Assume that a continuous automorphic Galois representation r-:Gal(Q-/F)→GLn(F-p) is upper-triangular and satisfies certain genericity conditions at a place w above p, and that every subquotient of r-|_Gal(Q-p/Fw) of dimension >2 is Fontaine-Laffaille generic. We show that the isomorphism class of r-|_Gal(Q-p/Fw) is determined by GLn(Fw)-action on a space of mod p algebraic automorphic forms cut out by the maximal ideal of a Hecke algebra associated to r-, assuming a weight elimination result which is now a theorem to appear in [LLMPQ]. In particular, we show that the wildly ramified part of r-|_Gal(Q-p/Fw) is determined by the action of Jacobi sum operators ( seen as elements of Fp[GLn(Fp)] ) on this space.The second part of my thesis aims at clarifying the relation between previous results in [Schr11], [Bre17] and [BD18]. Let E be a sufficiently large finite extension of Qp and ρp be a p-adic semi-stable representation Gal(Q-p/Qp)→GL3(E) such that the Weil-Deligne representation WD(ρp) associated with it has rank two monodromy operator N and the Hodge filtration associated with it is non-critical. We know that the Hodge filtration of ρp depends on three invariants in E. We construct a family of locally analytic representations Σ^min(λ, L1, L2, L3) of GL3(Qp) depending on three invariants L1, L2, L3 in E with each of the representation containing the locally algebraic representation Algotimes Steinberg determined by ρp. When ρp comes from an automorphic representation π of G(A_Q) with a fixed level U^p prime to p for a suitable unitary group G/Q, we show ( under some technical assumption ) that there is a unique locally analytic representation in the above family that occurs as a subrepresentation of the associated Hecke-isotypic subspace in the completed cohomology with level U^p. We recall that [Bre17] constructed a family of locally analytic representations depending on four invariants ( cf. (4) in [Bre17] ) with a similar property. We give a purely representation theoretic criterion: if a representation Π in Breuil's family embeds into a certain Hecke-isotypic subspace of completed cohomology, then it must equally embed into Σ^min(λ, L1, L2, L3) for certain choices of L1, L2, L3 in E determined explicitly by Π. Moreover, certain natural subquotients of Σ^min(λ, L1, L2, L3) give a true complex of locally analytic representations that realizes the derived object Σ(λ, underline{L}) [Schr11]. Consequently, the family of locally analytic representations Σ^min(λ, L1, L2, L3) give a relation between the higher L-invariants studied in [Bre17] as well as [BD18] and the p-adic dilogarithm function which appears in the construction of Σ^min(λ, L1, L2, L3) in [Schr11]
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Golovanov, Cristian. "Développement de formulations éléments finis 3D en potentiel vecteur magnétique : application à la simulation de dispositifs électromagnétiques en mouvement." Phd thesis, Grenoble INPG, 1997. http://tel.archives-ouvertes.fr/tel-00904770.
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Modélisation des équations électromagnétiques 3D couplées avec les circuits d'alimentation électrique et le déplacement de parties mobiles, dans le cas de machines électriques tournantes. La formulation choisie utilise, comme inconnue principale, le potentiel vecteur magnétique nonjaugé, int~rpolé sur des éléments finis d'arête. Le caractère compatible de la formulation est assuré par l'introduction d'un potentiel vecteur électrique pour représenter le courant source, tant pour les inducteurs filaires maillés que pour les inducteurs filaires non-maillés. Le circuit électrique d'alimentation est analysé par la méthode des potentiels électriques intégrés dans le temps et les systèmes électrique et magnétique sont résolus simultanément. La connexion entre les parties mobiles est les parties fixes se fait par une technique d'interpolation des maillages, adaptée aux éléments d'arête. Des méthodes numériques spécifiques ont été développées et implantées, notamment pour l'intégration en pas-à-pas dans le temps du système temporel du premier ordre et pour la résolution du système matriciel résultant. L'ensemble des développements effectués a été validé sur un moteur à réluctance variable.
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Behar, Rehala Houari. "Modélisation et caractérisation des boucles : application à la mesure en champ proche des fuites par ouverture dans les liaisons filaires à blindage." Aix-Marseille 3, 2002. http://www.theses.fr/2002AIX30076.
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Les équipements électroniques à haut niveau de sécurité exigent de nos jours des tests de compatibilité électromagnétique de plus en plus performants. Pour détecter les défauts de blindage l'industrie recherche des méthodes non destructives applicables aux câbles de liaison inter-équipements. C'est à ce problème technologique que la thèse est consacrée. La première partie de notre travail analyse tout d'abord les caractéristiques en émission en champ lointain des boucles élémentaires. Elle est complétée par l'étude des différentes méthodes utilisées pour la calibration des boucles, et plus particulièrement par la méthode du champ standard à base de bobines d'Helmholtz. La deuxième partie a concerné la détection, par l'utilisation de sonde de champ proche, des fuites électromagnétiques émises par une ouverture dans le blindage tressé d'un câble coaxial. Deux types de mesures, manuelles et par banc automatisé, sont présentées. Les différents résultats expérimentaux sont discutésThe electronics systems of high level of safety require nowadays increasingly powerful tests of electromagnetic compatibility. To detect the defects of shielding, industry seeks non-destructive methods applicable to the inter-equipment connecting cables. It is with this technological problem that the thesis is devoted. The first part of our work analyses first the far field emission characteristics of the elementary loops. It is supplemented by the study of the various methods used for the calibration of the loops, and more particularly by the method of the standard field using Helmholtz coils. The second part related to detection, by the use of near-field probe, of the electromagnetic leaks emitted by an aperture in the braided shielding of a coaxial cable. Two types of measurements, manual and by automated Scanner are presented. The experimental results are discussed