Teses / dissertações sobre o tema "QA0 mode"
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Kergosien, Nina. "Etude de l'intégration de transducteurs piézoélectriques à coeur de matériaux composite de type aéronautique pour le contrôle santé intégré par ondes de Lamb". Electronic Thesis or Diss., Ecully, Ecole centrale de Lyon, 2024. http://www.theses.fr/2024ECDL0008.
Texto completo da fonteSHM systems are currently being developed to check the integrity of aircraft composite materials. These systems will help optimize maintenance by enabling real-time monitoring of structural condition, or spot-checking of parts that are difficult to access using conventional NDT methods. Composite materials offer the possibility of integrating a SHM system directly into the material. In this way, the instrumentation is protected from the environment and surface bonding issues are resolved. The aim of this thesis is to determine the effects of integrating piezoelectric transducers into the core of an aeronautical laminated CFRP composite on their Lamb-wave emission and reception abilities, in order to demonstrate the advantages and disadvantages for the design of a defect detection SHM system. Thin PZT transducers proved to be the most suitable ones for integration, as they can withstand the processing conditions of an autoclave-processed composite (7 bar and 180°C). They are also capable of transmitting and receiving guided waves, which are propagating in the plates. Moreover, the integration method was adapted to preserve the integrity of the PZTs and to optimize their ability to transmit waves in a composite. In order to assess the effectiveness of the integration, electromechanical impedance measurements were made a fast checking process. Characterization of qA0 mode wavefield transmitted by embedded PZT was carried out experimentally. Surface-bonded and embedded PZT were excited at frequencies between 30 and 200 kHz, while out-of-plane displacements were measured with a laser vibrometer. The ability of the embedded PZT to detect a simulated magnet-type defect are also studied in pitch-catch tests, and compared with the behavior of surface-bonded PZT to the composite surface. A dynamic finite element modelling study was then conducted to highlight the physical phenomena induced by the integration of a PZT in the composite core. The direction of the plies in contact with the embedded PZT, the depth of integration and the coupling of the PZT with the composite are influencing the ultrasonic transduction mechanism. Furthermore, it appears that the stresses induced by the PZT actuator cannot be simplified by the pin-force model usually used to load a PZT on an isotropic material surface in flaw detection models. These stresses are not radially oriented and depend on the PZT electrode considered, as well as on the wave generation frequencies
Zhang, Xu. "Modeling & Performance Analysis of QAM-based COFDM System". University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1310148963.
Texto completo da fonteCastro, Sofia Balbina Santos Dias de. "Mode interactions with symmetry". Thesis, University of Warwick, 1993. http://wrap.warwick.ac.uk/4041/.
Texto completo da fonteBehrens, Gundula Ragna. "Mode jumping in MCMC". Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.478942.
Texto completo da fontePotgieter, Marnie. "Cellular effects of Coenzyme Q10 and resveratrol in the SJL/J dysferlinopathy mouse model". Thesis, University of Pretoria, 2010. http://hdl.handle.net/2263/24175.
Texto completo da fonteThesis (PhD)--University of Pretoria, 2010.
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Hill, Andrew Stephen. "O(2) equivariant mode interactions". Thesis, University of Warwick, 1988. http://wrap.warwick.ac.uk/99595/.
Texto completo da fonteGehre, Christian. "Development of a model of the new born child dummy Q0 /". Düsseldorf : VDI-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016244739&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Texto completo da fonteLicitra, Floriana. "Pathophysiological and molecular characterization of a mouse model of ARCA2, a recessive cerebellar ataxia associated to Coenzyme Q10 deficiency". Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAJ096/document.
Texto completo da fonteARCA2 is a form of recessive ataxia characterized by a slow progression of the ataxic phenotype, cerebellar atrophy and mild deficit in Coenzyme Q10. ARCA2 was recently found associated with mutations in the ADCK3 gene that encodes a putativemitochondrial kinase homologous to the yeast Coq8 and the bacterial UbiB proteins, which are required for Coenzyme Q biosynthesis. In order to elucidate the pathophysiology of ARCA2, a constitutive knockout mouse for Adck3 was generated.Adck3-/- mice reproduce many ARCA2 symptoms such as slow progression of the ataxic phenotype and mild Coenzyme Q deficit, suggesting that Adck3-/- mice are a good model to study ARCA2. Strikingly, a morphological and functional impairmentwas found in cerebellar Adck3-/- Purkinje cells, whereas a mild mitochondrial defect was observed in the skeletal muscle of Adck3-/- mice. Interestingly, transcriptomic analyses revealed alteration in a number of molecular pathways implicating ADCK3in novel cellular processes
Wan, Derek. "On the supermarket model with memory". Thesis, London School of Economics and Political Science (University of London), 2012. http://etheses.lse.ac.uk/588/.
Texto completo da fonteGopal, Pillay Khuneswari. "Model selection and model averaging in the presence of missing values". Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6834/.
Texto completo da fonteGuo, Chuan. "The stochastic volatility Markov-functional model". Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/91418/.
Texto completo da fonteMcGrory, Clare Anne. "Variational approximations in Bayesian model selection". Thesis, University of Glasgow, 2005. http://theses.gla.ac.uk/6941/.
Texto completo da fonteCarr, Ben. "Model subgroups of finite soluble groups". Thesis, University of Warwick, 1998. http://wrap.warwick.ac.uk/111070/.
Texto completo da fonteAlessandrini, Marco. "Evaluation of the effects of coenzyme Q10 and succinate in a rotenone-induced complex I deficient rat model / by Marco Alessandrini". Thesis, North-West University, 2006. http://hdl.handle.net/10394/491.
Texto completo da fonteThesis (Ph.D. (Biochemistry))--North-West University, Potchefstroom Campus, 2007.
Zhou, Yan. "Bayesian model comparison via sequential Monte Carlo". Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/62064/.
Texto completo da fonteUnderhill, Nick. "Efficient and context-dependent Bayesian model selection". Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/89267/.
Texto completo da fontePatrascoiu, Octavian. "Model driven language engineering". Thesis, University of Kent, 2005. https://kar.kent.ac.uk/14352/.
Texto completo da fonteZhang, Fan. "Parameter estimation and model fitting of stochastic processes". Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/51576/.
Texto completo da fonteAdamou, Maria. "Bayesian optimal designs for the Gaussian Process Model". Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/373881/.
Texto completo da fonteChen, Weiwei. "A coupled left ventricle and systemic arteries model". Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/7037/.
Texto completo da fonteMonks, Thomas. "Comparing model reuse with model building : an empirical study of learning from simulation". Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/55525/.
Texto completo da fonteOverstall, Antony Marshall. "Default Bayesian model determination for generalised linear mixed models". Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/170229/.
Texto completo da fonteHollmann, Claudia. "A cognitive human behaviour model for pedestrian behaviour simulation". Thesis, University of Greenwich, 2015. http://gala.gre.ac.uk/13831/.
Texto completo da fonteSammut, Fiona. "Using generalized linear models to model compositional response data". Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/89876/.
Texto completo da fonteVeerapen, Parmaseeven Pillay. "Recurrence relationships and model monitoring for Dynamic Linear Models". Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/109386/.
Texto completo da fonteWang, Jinghua. "A hybrid model for large scale simulation of unsteady nonlinear waves". Thesis, City University London, 2016. http://openaccess.city.ac.uk/14575/.
Texto completo da fonteKaraki, Muath. "Composition operators on model spaces". Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/25834.
Texto completo da fonteThis thesis concerns the study of composition operators on model spaces. Let φ be an analytic function on the unit disc into itself and let θ be an inner function, that is a holomorphic function bounded by 1 such that the radial limits on the unit circle are of modulus 1 almost everywhere with respect to Lebesgue measure. With this function θ, we associate the model space Kθ, defined as the set of functions f ∈ H2, which are orthogonal to the subspace θH2. Here, H2 is the Hardy space on the unit disc. These subspaces are important in operator theory because they are used to model a large class of contractions on Hilbert space. The first problem which we are interested in concerns the compactness of the composition operator Cφ as an operator on H2 into H2. Recently, Lyubarskii and Malinnikova have obtained a nice criterion for the compactness of these operators which is related to the Nevanlinna counting function. This criterion generalizes the classical criterion of Shapiro. In the first part of the thesis, we generalize this result of Lyubarskii-Malinnikova to a more general class of subspaces, known as de Branges-Rovnyak spaces or some subspaces of them. The techniques that are used are particular Bernstein type inequalities of these spaces. The second problem in which we are interested in this thesis concerns the invariance of Kθ under Cφ. We present a group structure on the unit disc via the automorphisms which fix the point 1. Then, through the induced group action, each point of the unit disc produces an equivalence class which turns out to be a Blaschke sequence. Moreover, the corresponding Blaschke products are minimal solutions of the functional equation ψ∘φ=λψ , where λ is a unimodular constant and φ is an automorphism of the unit disc. These results are applied in the invariance problem of the model spaces by the composition operator.
Smaus, Jan-Georg. "Modes and types in logic programming". Thesis, University of Kent, 1999. https://kar.kent.ac.uk/21739/.
Texto completo da fonteShiers, N. L. "Gaussian latent tree model constraints for linguistics and other applications". Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/80590/.
Texto completo da fonteDunbar, Oliver. "A diffuse interface model of surfactants in multi-phase flow". Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/99133/.
Texto completo da fonteThan, Soe Muang. "Vibration-based finite element model updating and structural damage identification". Thesis, University of Greenwich, 2013. http://gala.gre.ac.uk/11451/.
Texto completo da fonteGibiansky, Ekaterina. "Population pharmacokinetics : model-free approach and nonlinear mixed-effects modelling". Thesis, University of Greenwich, 1999. http://gala.gre.ac.uk/8654/.
Texto completo da fonteTouloupou, Panayiota. "Bayesian inference and model selection for partially observed stochastic epidemics". Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/88361/.
Texto completo da fonteJaeg, Tiphaine. "Exploring the mitochondrial function in muscle and molecular dysregulation in cerebellum in a mouse model for ARCA2, a recessive ataxia with coenzyme Q10 deficiency". Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAJ082/document.
Texto completo da fonteARCA2, a rare form of recessive ataxia, is characterized by early onset progressive ataxia, cerebellar atrophy and a mild Coenzyme Q10 deficiency. Most of the patients show additional neurological signs such as epilepsy and exercise intolerance. Mutations in the COQ8A gene lead to ARCA2. COQ8A is suggested as being an unorthodox protein kinase like, with a regulatory role in CoQ biosynthesis, in mammals. To better understand ARCA2, a constitutive Coq8a knock-out (KO) mouse model was generated, which recapitulates most of the patient’s symptoms. Here we report the use of cellular models and the affected tissues to uncover the molecular signature of COQ8A loss and CoQ deficit. Despite CoQ deficit in the muscle, no mitochondrial bioenergetics defect was uncovered. In parallel, we have identified, by RT-qPCR, a key set of genes that are dysregulated in cerebellum, very early on in the pathology. We are currently investigating these pathways to uncover the link with COQ8A function. Altogether, our experiments will shed light on the early molecular events that lead to ARCA2 and may help draw a link between COQ8A function, CoQ pools and the symptoms observed in patients
Rama, Krishnan. "Fermion flavour observables : renormalisation invariants and model building using discrete symmetries". Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/56802/.
Texto completo da fonteTạ, Ngọc Trí. "Results on the number of zero modes of the Weyl-Dirac operator". Thesis, Lancaster University, 2009. http://eprints.lancs.ac.uk/30804/.
Texto completo da fonteMacdonald, Craig. "The voting model for people search". Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/609/.
Texto completo da fonteUluat, Mehmet Fatih. "Model-based Approach To The Federation Object Model Independence Problem". Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608672/index.pdf.
Texto completo da fonteKasal, Ozcan. "Model Theory Of Derivation Spaces". Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611715/index.pdf.
Texto completo da fonteNazar, Faizan Q. "Electronic structure of defects in the Thomas-Fermi-von-Weizsäcker model of crystals". Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/91552/.
Texto completo da fonteLee, Min Cherng. "Multiple imputation for missing data and statistical disclosure control for mixed-mode data using a sequence of generalised linear models". Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/366481/.
Texto completo da fonteSchweigler, Mario. "A unified model for inter- and intra-processor concurrency". Thesis, University of Kent, 2006. https://kar.kent.ac.uk/14444/.
Texto completo da fonteZakaria, Mohamed Ramzy. "The hybrid model, and adaptive educational hypermedia frameworks". Thesis, University of Nottingham, 2004. http://eprints.nottingham.ac.uk/14247/.
Texto completo da fontePasos, Jose E. "Mean-variance optimal portfolios for Lévy processes and a singular stochastic control model for capacity expansion". Thesis, London School of Economics and Political Science (University of London), 2018. http://etheses.lse.ac.uk/3771/.
Texto completo da fonteAl-Karkhi, Tahani. "Population dynamics and pattern formation in an info-chemical mediated tri-trophic plankton model". Thesis, University of Essex, 2018. http://repository.essex.ac.uk/22828/.
Texto completo da fonteFinch, Sam. "The random cluster model on the tree : Markov chains, random connections and boundary conditions". Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/47385/.
Texto completo da fonteVasquez, Louella J. "High precision multifractal analysis in the 3D Anderson model of localisation". Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/3811/.
Texto completo da fonteRizzo, Michael. "A model for flexible telephone services based on negotiating agents". Thesis, University of Kent, 1996. https://kar.kent.ac.uk/21341/.
Texto completo da fonteKister, Alexander Karl. "Sample path large deviations for the Laplacian model with pinning interaction in (1+1)-dimension". Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/79699/.
Texto completo da fonteKokkola, N. "A double-error correction computational model of learning". Thesis, City, University of London, 2017. http://openaccess.city.ac.uk/18838/.
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