Tesis sobre el tema "Auxiliary dynamics"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte los 20 mejores tesis para su investigación sobre el tema "Auxiliary dynamics".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Explore tesis sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.
Liu, Jie. "State Estimation for Linear Singular and Nonlinear Dynamical Systems Based on Observable Canonical Forms". Electronic Thesis or Diss., Bourges, INSA Centre Val de Loire, 2024. http://www.theses.fr/2024ISAB0002.
Texto completoThis thesis aims, on the one hand, to design estimators for linear singular systems usingthemethod of modulation functions. On the other hand, it aims to develop observersfor a class of nonlinear dynamical systems using the method of canonical formsof observers. For singular systems, the designed estimators are presented in the formof algebraic integral equations, ensuring non-asymptotic convergence. An essentialcharacteristic of the designed estimation algorithms is that noisy measurements of theoutputs are only involved in integral terms, thereby imparting robustness to the estimatorsagainst perturbing noises. For nonlinear systems, the main design idea is totransform the proposed systems into a simplified form that accommodates existingobservers such as the high-gain observer and the sliding-mode observer. This simpleformis called auxiliary output depending observable canonical form.For the linear singular systems, we transform the considered system into a formsimilar to the Brunovsky’s observable canonical form with the injection of the inputs’and outputs’ derivatives. First, for linear singular systems with single input and singleoutput, the observability condition is proposed. The system’s input-output differentialequation is derived based on the Brunovsky’s observable canonical form. Algebraicformulas with a sliding integration window are obtained for the variables in differentsituations without knowing the system’s initial condition. Second, for linear singular systemswith multiple input and multiple output, an innovative nonasymptotic and robust estimation method based on the observable canonical form by means of a set of auxiliary modulating dynamical systems is introduced. The latter auxiliary systems are given by the controllable observable canonical with zero initial conditions. The proposed method is applied to estimate the states and the output’s derivatives for linear singular system in noisy environment. By introducing a set of auxiliary modulating dynamical systems which provides a more general framework for generating the requiredmodulating functions, algebraic integral formulas are obtained both for the state variables and the output’s derivatives. After giving the solutions of the required auxiliary systems, error analysis in discrete noisy case is addressed, where the provided noise error bound can be used to select design parameters.For the nonlinear dynamical systems, we propose a family of "ready to wear" nonlineardynamical systemswith multiple outputs that can be transformed into the outputauxiliarydepending observer normal forms which can support the well-known slidingmode observer. For this, by means of the so-called dynamics extension method anda set of changes of coordinates (basic algebraic integral computations), the nonlinearterms are canceled by auxiliary dynamics or replaced by nonlinear functions of themultiple outputs. It is worth mentioning that this procedure is finished in a comprehensible way without resort to the tools of differential geometry, which is user-friendly for those who are not familiar with the computations of Lie brackets. In addition, the efficiency and robustness of the proposed observers are verified by numerical simulations in this thesis. Second, a larger class of "ready to wear" nonlinear dynamicalsystems with multiple inputs and multiple outputs are provided to further extend anddevelop the systems proposed in the first case. In a similar way, by means of the corresponding auxiliary dynamics and a set of changes of coordinates, the provided systems are converted into targeted nonlinear observable canonical forms depending on both the multiple outputs and auxiliary variables. Naturally, this procedure is still completed without resort to geometrical tools. Finally, conclusions are outlined with some perspectives
Plank, Jack R. "Nuclear Thermal Propulsion Cool-Down Phase Optimization Through Quasi-Steady Computational Analysis, and the Effect of Auxiliary Heat Removal Systems". The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618934609976051.
Texto completoMcCord, Christopher George. "Data-driven dynamic optimization with auxiliary covariates". Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122098.
Texto completoThesis: Ph. D., Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 183-190).
Optimization under uncertainty forms the foundation for many of the fundamental problems the operations research community seeks to solve. In this thesis, we develop and analyze algorithms that incorporate ideas from machine learning to optimize uncertain objectives directly from data. In the first chapter, we consider problems in which the decision affects the observed outcome, such as in personalized medicine and pricing. We present a framework for using observational data to learn to optimize an uncertain objective over a continuous and multi-dimensional decision space. Our approach accounts for the uncertainty in predictions, and we provide theoretical results that show this adds value. In addition, we test our approach on a Warfarin dosing example, and it outperforms the leading alternative methods.
In the second chapter, we develop an approach for solving dynamic optimization problems with covariates that uses machine learning to approximate the unknown stochastic process of the uncertainty. We provide theoretical guarantees on the effectiveness of our method and validate the guarantees with computational experiments. In the third chapter, we introduce a distributionally robust approach for incorporating covariates in large-scale, data-driven dynamic optimization. We prove that it is asymptotically optimal and provide a tractable general-purpose approximation scheme that scales to problems with many temporal stages. Across examples in shipment planning, inventory management, and finance, our method achieves improvements of up to 15% over alternatives. In the final chapter, we apply the techniques developed in previous chapters to the problem of optimizing the operating room schedule at a major US hospital.
Our partner institution faces significant census variability throughout the week, which limits the amount of patients it can accept due to resource constraints at peak times. We introduce a data-driven approach for this problem that combines machine learning with mixed integer optimization and demonstrate that it can reliably reduce the maximal weekly census.
by Christopher George McCord.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center
Gibson, Hannah Cameron. "Auxiliary placement in Rangi : a dynamic syntax perspective". Thesis, SOAS, University of London, 2012. http://eprints.soas.ac.uk/16637/.
Texto completoJenkins, Kerry. "Development of dynamic resolutions for asymmetric synthesis". Thesis, University of Sussex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241636.
Texto completoAstley, Marcus Robert. "Orchestrated stakeholder dialogue : its place in dynamic capability theory and its practical value for business". Thesis, London Metropolitan University, 2015. http://repository.londonmet.ac.uk/921/.
Texto completoYong, Woon Yik. "On the dynamic thermal and thermoelastic contact interaction between a rotor and an auxiliary bearing". Thesis, University of Bath, 2006. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428356.
Texto completoVanzini, Marco. "Auxiliary systems for observables : dynamical local connector approximation for electron addition and removal spectra". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX012/document.
Texto completoThis thesis proposes an innovative theoretical method for studying one-electron excitation spectra, as measured in photoemission and inverse photoemission spectroscopy.The current state-of-the-art realistic calculations rely usually on many-body Green’s functions and complex, non-local self energies, evaluated specifically for each material. Even when the calculated spectra are in very good agreement with experiments, the computational cost is very large. The reason is that the method itself is not efficient, as it yields much superfluous information that is not needed for the interpretation of experimental data.In this thesis we propose two shortcuts to the standard method. The first one is the introduction of an auxiliary system that exactly targets, in principle, the excitation spectrum of the real system. The prototypical example is density functional theory, in which the auxiliary system is the Kohn-Sham system: it exactly reproduces the density of the real system via a real and static potential, the Kohn-Sham potential. Density functional theory is, however, a ground state theory, which hardly yields excited state properties: an example is the famous band-gap problem. The potential we propose (the spectral potential), local and frequency-dependent, yet real, can be viewed as a dynamical generalisation of the Kohn-Sham potential which yields in principle the exact spectrum.The second shortcut is the idea of calculating this potential just once and forever in a model system, the homogeneous electron gas, and tabulating it. To study real materials, we design a connector which prescribes the use of the gas results for calculating electronic spectra.The first part of the thesis deals with the idea of auxiliary systems, showing the general framework in which they can be introduced and the equations they have to fulfill. We then use exactly-solvable Hubbard models to gain insight into the role of the spectral potential; in particular, it is shown that a meaningful potential can be defined wherever the spectrum is non-zero, and that it always yields the expected spectra, even when the imaginary or the non-local parts of the self energy play a prominent role.In the second part of the thesis, we focus on calculations for real systems. We first evaluate the spectral potential in the homogeneous electron gas, and then import it in the auxiliary system to evaluate the excitation spectrum. All the non-trivial interplay between electron interaction and inhomogeneity of the real system enters the form of the connector. Finding an expression for it is the real challenge of the procedure. We propose a reasonable approximation for it, based on local properties of the system, which we call dynamical local connector approximation.We implement this procedure for four different prototypical materials: sodium, an almost homogeneous metal; aluminum, still a metal but less homogeneous; silicon, a semiconductor; argon, an inhomogeneous insulator. The spectra we obtain with our approach agree to an impressive extent with the ones evaluated via the computationally expensive self energy, demonstrating the potential of this theory
SOUZA, Regina Machado de. "Um instrumento para auxiliar o produtor na tomada de decisão quanto à data de venda da soja". Universidade Federal de Goiás, 2010. http://repositorio.bc.ufg.br/tede/handle/tde/405.
Texto completoThis word aimeded to develop a friendly computational tool that, given the expectation of the producer in relation to soybean prices at a future date, help them decide whether or not it‟s worth waiting to sell their produce at that future date or sell in the current date. This work relied mainly with the System Dynamics methodology for model building and testing of Box-Jenkins to obtain the price expectations. The model also allows deriving the likely minimum price to be received by the producer in order to justify its decision to postpone its sale. We found no empirical evidence capable of sustaining the existence of a priori a better time to sell soybeans.
Este trabalho desenvolveu um instrumento computacional amigável que pudesse, dada a expectativa do produtor em relação ao preço da soja em uma data futura, auxiliá-lo a decidir se vale a pena ou não esperar para vender sua produção naquela data futura ou vendê-la na data atual. Para tanto, contou principalmente com a metodologia System Dynamics para construção do modelo e a análise de Box-Jenkins para obtenção das expectativas de preços. O modelo desenvolvido, também, permite auferir o provável preço mínimo a ser recebido pelo produtor, a fim de que possa justificar sua decisão em postergar sua venda. Não foram encontradas evidências empíricas capazes de sustentar a existência a priori de uma melhor data para se vender a soja.
Esna, Ashari Esfahani Alireza. "Détection active de pannes dans les systèmes dynamiques en boucle fermée". Thesis, Paris Est, 2010. http://www.theses.fr/2010PEST1060.
Texto completoThe aim is to develop a novel theory of robust active failure detection based on multi-model formulation of faults. The original method was already proposed by the Metalau group of INRIA. We have continued to work on the extension of this approach to more general cases. The focus is on the effects of feedback on the previous approach. The multi-model approach is still used to model the normal and the failed systems; however the possible advantages of using linear dynamic feedback in the construction of the auxiliary signal for robust fault detection is considered and the results are compared to the previously developed open-loop setup. An original formulation of the active fault detection problem using feedback is developed. The norm of the auxiliary signal is considered as a possible cost criterion. Also, we have considered a more general cost function that has already been used for measuring the performance of feedback configurations in Linear Control Theory. We have given a complete solution to this problem. In order to find a complete solution, several mathematical problems are solved
Rancruel, Diego Fernando. "Dynamic Synthesis/Design and Operation/Control Optimization Approach applied to a Solid Oxide Fuel Cell based Auxiliary Power Unit under Transient Conditions". Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/26277.
Texto completoPh. D.
Ferreira, Cassio Marins. "O uso do geoGebra como ferramenta auxiliar na compreens?o de resultados de geometria pouco explorados no ensino b?sico". Universidade Federal Rural do Rio de Janeiro, 2015. https://tede.ufrrj.br/jspui/handle/jspui/1391.
Texto completoMade available in DSpace on 2017-01-25T10:55:06Z (GMT). No. of bitstreams: 1 2015 - Cassio Marins Ferreira.pdf: 2336646 bytes, checksum: ec3b1734c73a206999579144e063ab1f (MD5) Previous issue date: 2015-08-28
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
This work intends to present the Dynamic Geometry software GeoGebra to elementary school students. It uses the GeoGebra as a tool for building a step by step procedure to convince students of the veracity of results that have simple statements, but not trivial proofs. The following theorems were worked: Morley's Theorem, Hipparchus Theorem, Stewart's Theorem, Menelaus Theorem and 9-Point Circle Theorem. Demonstrations are held strictly in the traditional way, and in parallel it is used the GeoGebra software, thus giving a playful view of the statements. It is understood that this approach will be more attractive, enabling a better understanding of the theorems by students. The work culminates with the application of a motivational test to a class of basic education after a class in which they worked the 9-Point Circle using GeoGebra
Este trabalho tem a inten??o de apresentar o softwarede Geometria Din?micaGeoGebra ao aluno do Ensino B?sico. Utiliza-se o GeoGebra como ferramenta para a constru??o din?mica de um passo-a-passo para convencer os alunos da veracidade de resultados que possuem enunciados simples, mas demonstra??es n?o triviais. Foram trabalhados os seguintes teoremas: Teorema de Morley, Teorema de Hiparco, Teorema de Stewart, Teorema de Menelau e Teorema do C?rculo de 9 Pontos. As demonstra??es s?o realizadas rigorosamente, da forma tradicional, e em paralelo ? feito o uso do softwareGeoGebra, dando assim uma vis?o l?dica das demonstra??es. Entende-se que esta abordagem ser? mais atrativa, possibilitando uma melhor compreens?o dos teoremas pelos alunos. O trabalho culmina com a aplica??o de um teste motivacional a uma turma do Ensino B?sico ap?s uma aula em que se trabalhou o Teorema do C?rculo dos 9 Pontos utilizando-se o GeoGebra
Beltran, Royo César. "Generalized unit commitment by the radar multiplier method". Doctoral thesis, Universitat Politècnica de Catalunya, 2001. http://hdl.handle.net/10803/6501.
Texto completoThis thesis report is structured as follows. Chapter 1 describes the state of the art of the UC and GUC problems. The formulation of the classical short-term power planning problems related to the GUC problem, namely the economic dispatching problem, the OPF problem, and the UC problem, are reviewed. Special attention is paid to the UC literature and to the traditional methods for solving the UC problem. In chapter 2 we extend the OPF model developed by professors Heredia and Nabona to obtain our GUC model. The variables used and the modelling of the thermal, hydraulic and transmission systems are introduced, as is the objective function. Chapter 3 deals with the Variable Duplication (VD) method, which is used to decompose the GUC problem as an alternative to the Classical Lagrangian Relaxation (CLR) method. Furthermore, in chapter 3 dual bounds provided by the VDmethod or by the CLR methods are theoretically compared.
Throughout chapters 4, 5, and 6 our solution methodology, the Radar Multiplier (RM) method, is designed and tested. Three independent matters are studied: first, the auxiliary problem principle method, used by Batut and Renaud to treat the inseparable augmented Lagrangian, is compared with the block coordinate descent method from both theoretical and practical points of view. Second, the Radar Sub- gradient (RS) method, a new Lagrange multiplier updating method, is proposed and computationally compared with the classical subgradient method. And third, we study the local character of the optimizers computed by the Augmented Lagrangian Relaxation (ALR) method when solving the GUC problem. A heuristic to improve the local ALR optimizers is designed and tested.
Chapter 7 is devoted to our computational implementation of the RM method, the MACH code. First, the design of MACH is reviewed brie y and then its performance is tested by solving real-life large-scale UC and GUC instances. Solutions computed using our VD formulation of the GUC problem are partially primal feasible since they do not necessarily fulfill the spinning reserve constraints. In chapter 8 we study how to modify this GUC formulation with the aim of obtaining full primal feasible solutions. A successful test based on a simple UC problem is reported. The conclusions, contributions of the thesis, and proposed further research can be found in chapter 9.
NASCIMENTO, Eimard Gomes Antunes. "Avaliação do software geogebra como instrumento psicopedagógico de ensino em geometria". http://www.teses.ufc.br, 2012. http://www.repositorio.ufc.br/handle/riufc/3081.
Texto completoSubmitted by Maria Josineide Góis (josineide@ufc.br) on 2012-07-06T12:04:55Z No. of bitstreams: 1 2012_Dis_EGANascimento.pdf: 1109485 bytes, checksum: 2166a7f6639ae4cd68fe3dc82b971e3a (MD5)
Approved for entry into archive by Maria Josineide Góis(josineide@ufc.br) on 2012-07-09T12:44:46Z (GMT) No. of bitstreams: 1 2012_Dis_EGANascimento.pdf: 1109485 bytes, checksum: 2166a7f6639ae4cd68fe3dc82b971e3a (MD5)
Made available in DSpace on 2012-07-09T12:44:46Z (GMT). No. of bitstreams: 1 2012_Dis_EGANascimento.pdf: 1109485 bytes, checksum: 2166a7f6639ae4cd68fe3dc82b971e3a (MD5) Previous issue date: 2012
This current study presents the assessment on Geogebra free software for teaching geometry, as a psycho-pedagogical approach, highlighting resources that facilitate integration and use of program with professors and students’ learning topics. The software can be applied from earlier primary-school students to college ones as well as distance education programs by using internet. Geogebra is a free dynamic mathematic software and multiple-platform for all learning levels, combining geometry, algebra, tables, plotting, graphics, statistics and one-system calculation. The geometry presented was guaranteed and assigned as dynamic geometry and interactive (GDI) that is it, a computer implementation such as: rulers, drawing, square, calipers. Those tools provide motion by keeping construction properties in a static state though, in addition, dynamic motions in order to transforming the computer into a mathematics laboratory where one can perform several technological practices. The study about teaching and learning on geometry and algebra configures itself by means of a descriptive research with exploiting characteristics and almost experimental. The established steps follow as: - re-conception of teaching and learning of mathematics; re-dimension of theories and researches on evaluation. The study of case about assessment of programs on near-by qualitative methodology, in which data and the interface between several presentation of data analysis. We have concluded that the software is innovator and well measured by students and professors who have already used that technology for acquiring knowledge on mathematics and consequently for using in algebra and geometry. Currently, the program is in a long run a great insight and well known throughout.
O estudo tem por objetivo avaliar o software livre Geogebra para o ensino aprendizagem de geometria, como uma ferramenta psicopedagógica, com destaque aos recursos que facilitam a integração e uso do programa com os conteúdos curriculares, professores e alunos. O software pode ser aplicado desde as séries inicias do ensino fundamental, em estudos universitários e em cursos a distância via internet. O Geogebra é um software sobre matemática dinâmica, gratuito e de multi-plataforma para todos os níveis de ensino, que combina geometria, álgebra, tabelas, gráficos, estatística e cálculo em um único sistema. A geometria que apresenta foi validada e designada como Geometria Dinâmica e Interativa (GDI), isto é, uma implementação computacional das tecnologias usadas, tais como: régua, compasso, esquadro e transferidor os quais permitem que os modelos construídos, apesar de estáticos, sejam movidos mantendo as propriedades da construção, acrescenta ainda movimentos dinâmicos e transforma o computador em um laboratório matemático, onde se pode executar várias práticas tecnológicas. O estudo sobre o ensino-aprendizagem da geometria e álgebra se configura por meio de uma pesquisa descritiva de caráter exploratório e quase-experimental. O trabalho desvela a realidade empírica por meio da metodologia quali-quantitativa, na qual se coteja os dados e a interface entre as variáveis qualitativas e quantitativas, mediante os princípios do estudo de caso único com apresentação da análise dos dados. Conclui-se que o programa, além de inovador, é bem aceito pelos alunos e professores que se apropriam desta tecnologia para a aquisição de saberes e conhecimentos em matemática e, por via de consequência, da geometria e álgebra. Atualmente, o programa está em grande expansão e bem divulgado em todo no mundo.
Salazar, Jesus Victoria Flores. "Gênese instrumental na interação com Cabri 3D: um estudo de transformações geométricas no espaço". Pontifícia Universidade Católica de São Paulo, 2009. https://tede2.pucsp.br/handle/handle/11397.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
This thesis has the purpose of observing how students from the 2nd year of High School make use of geometric transformations of space when interacting with the environment of Dynamic Geometry Cabri 3D, as well as what kind of reasoning they use when developing activities concerning this content. Thereby, this work intends to answer the following questions: How do students make use of the tools and/or resources of Cabri 3D in order to learn the geometric transformations of space? How does the integration of Cabri 3D interfere in the process of learning these geometric transformations? The methodology adopted used aspects of Didactics Engineering, according to Artigue (1988). The theoretical foundation was the Instrumental Approach of Rabardel (1995) to enable the understanding of how students interact with Cabri 3D and which contents they make use of during the development of a sequence of activities. In addition, the theory of Register of Semiotics Representation of Duval (1995) was used, specifically the apprehensions of a figure. The analyses of the activities which involve notions of geometrical transformation of space helped us realize other possibilities that the instruments can give the subjects as well as different ways of organizing the actions. Moreover, the activities made the development of different strategies easier for students who used the Cabri 3D and students established relationships between the software and mathematical knowledge. We verified the occurrence of Instrumental Genesis, because the students actions showed pre-established schemes or the development of new schemes. At the same time, the use of Cabri 3D helped the perceptive apprehension of the figures and allowed to become dynamic. This way, Cabri 3D permitted the dynamic figural register, facilitated the positional modification and the other modifications of figures, and their visualization
Esta tese teve por objetivo observar como estudantes do segundo ano do Ensino Médio apropriam-se das transformações geométricas no espaço, quando interagem com o ambiente de Geometria Dinâmica Cabri 3D, bem como qual raciocínio mobilizam quando desenvolvem atividades que abrangem esse conteúdo. Assim, a pesquisa pretendeu responder às seguintes questões: de que maneira, os estudantes apropriam-se das ferramentas e/ou recursos do Cabri 3D na aprendizagem das transformações geométricas no espaço? Como a integração do Cabri 3D interfere no processo de aprendizagem dessas transformações geométricas? A metodologia do estudo apoiou-se nos pressupostos da Engenharia Didática de Artigue (1988). O referencial teórico baseou-se na Abordagem Instrumental de Rabardel (1995a) para compreender como os alunos interagem com o Cabri 3D e quais conteúdos mobilizam no desenvolvimento da sequência de atividades e na teoria dos Registros de Representação Semiótica de Duval (1995), especificamente, nas diferentes apreensões de uma figura. A análise das atividades ajudou a perceber outras possibilidades que os instrumentos podem oferecer aos sujeitos e as diferentes maneiras de organizar suas ações. Além disso, as atividades facilitaram o desenvolvimento de distintas estratégias no uso do Cabri 3D e o estabelecimento de relações entre o software e os conhecimentos matemáticos dos estudantes. Constatou-se a ocorrência do processo de Gênese Instrumental, visto que as ações dos alunos evidenciaram esquemas de utilização preestabelecidos ou o desenvolvimento de novos esquemas. Ao mesmo tempo, o uso do Cabri 3D facilitou a apreensão perceptiva das figuras e permitiu dinamizá-las. Nesse sentido, o Cabri 3D propiciou o registro figural dinâmico, facilitou a modificação posicional e as outras modificações das figuras, além de auxiliar em sua visualização
Benhani, El mehdi. "Sécurité des systèmes sur puce complexes hétérogènes". Thesis, Lyon, 2020. http://www.theses.fr/2020LYSES016.
Texto completoThe thesis studies the security of the ARM TrustZone technology in the context of complex heterogeneous SoCs. The thesis presents hardware attacks that affect elements of the SoCs architecture and it also presents countermeasure strategies
Pechková, Jana. "Dynamika změn kvality cukrovky po mimokořenové výživě a aplikaci pomocných rostlinných přípravků =:The dynamics of changes in the quality of sugar beet after foliar feeding and application of auxiliary plant preparations /". Doctoral thesis, 2018. http://www.nusl.cz/ntk/nusl-425051.
Texto completoWen, Yue. "DC-DC Converter with Improved Dynamic Response and Efficiency Using a Calibrated Auxiliary Phase". Thesis, 2011. http://hdl.handle.net/1807/31631.
Texto completoMorin, Michaël. "Étude numérique de la formation du complexe protéique formé du canal potassique humain Kv4.2 et de sa sous-unité bêta DPP6.2". Thèse, 2018. http://hdl.handle.net/1866/22211.
Texto completoSarmento, Miguel da Fonseca Botelho Rodrigues. "Exploration of innovative products in airline services". Master's thesis, 2020. http://hdl.handle.net/10071/21409.
Texto completoDevido à forte concorrência inerente à indústria da aviação, combinada com baixos lucros e custos operacionais significativos, as companhias aéreas necessitam captar receitas adicionais para serem financeiramente sustentáveis. Este trabalho de pesquisa examina as companhias aéreas procurando perceber as necessidades dos passageiros e as oportunidades que daí surjam. Em colaboração com a TAP Air Portugal, o caminho passa pela inovação na venda de "ancillaries" aumentando a proposta de valor ao cliente e vendendo mais nos canais diretos. Assim, a jornada de viagem do passageiro é analisada tentando perceber as suas preferências ao longo deste processo. A relação do passageiro com as companhias aéreas nomeadamente aos níveis de confiança, fiabilidade e aceitação de novos produtos e serviços são explorados. Por último, foi também analisada a possibilidade de as companhias aéreas revenderem os bilhetes de avião. Através da criação e execução de um inquérito online foram obtidos dados relativamente a 300 passageiros que usualmente viajam de avião de modo a explorar as suas necessidades e potenciais inovações em produtos e serviços. Assim, através de analises estatísticas, foram apuradas as razões que levam os passageiros a não adquirir o seu bilhete de avião diretamente com a companhia aérea. Foi apurado que os passageiros não estão satisfeitos com a informação que obtêm e que sentem a necessidade em serem devidamente aconselhados ao fazerem as suas viagens. Foi também apurado que os passageiros demonstram um nível positivo de aceitação para trocarem o seu bilhete de avião, para uma data próxima, se forem reembolsados para o fazer.