Дисертації з теми "Oscillations"
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Kuzovkov, Vladimir, Guntars Zvejnieks, Olaf Kortlüke, and Niessen Wolfgang von. "Forced oscillations in self-oscillating surface reaction models." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-195406.
Повний текст джерелаKuzovkov, Vladimir, Guntars Zvejnieks, Olaf Kortlüke, and Niessen Wolfgang von. "Forced oscillations in self-oscillating surface reaction models." Diffusion fundamentals 2 (2005) 27, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14357.
Повний текст джерелаAndes, Derek. "Orbital oscillations." Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/919.
Повний текст джерелаFraser, Geoffrey Alan. "Nonradial oscillations in Spica." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24667.
Повний текст джерелаScience, Faculty of
Physics and Astronomy, Department of
Graduate
Rangavajhula, Krishna C. "Nonstationary oscillations through bifurcations." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23875.pdf.
Повний текст джерелаReid, Giles Adrian. "Neutrino Oscillations in Astrophysics." Thesis, University of Canterbury. Physics and Astronomy, 2010. http://hdl.handle.net/10092/4935.
Повний текст джерелаPennequin, Denis. "Contrôle optimal et oscillations." Paris 1, 2000. http://www.theses.fr/2000PA010061.
Повний текст джерелаTodd, Thomas. "Robust oscillations in cells." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685923.
Повний текст джерелаAmon, Axelle. "Dynamique temporelle des oscillateurs paramétriques optiques continus : oscillations multimodes, oscillations en rafales et chaos." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2003. http://tel.archives-ouvertes.fr/tel-00004477.
Повний текст джерелаSchwabedal, Justus Tilmann Caspar. "Phase dynamics of irregular oscillations." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2011/5011/.
Повний текст джерелаMany natural systems embedded in a complex surrounding show irregular oscillatory dynamics. The oscillations can be parameterized by a phase variable in order to obtain a simplified theoretical description of the dynamics. Importantly, a phase description can be easily extended to describe the interactions of the system with its surrounding. It is desirable to define an invariant phase that is independent of the observable or the arbitrary parameterization, in order to make, for example, the phase characteristics obtained from different experiments comparable. In this thesis, we present an invariant phase description of irregular oscillations and their interactions with the surrounding. The description is applicable to stochastic and chaotic irregular oscillations of autonomous dissipative systems. For this it is necessary to interrelate different phase values in order to allow for a parameterization-independent phase definition. On the other hand, a criterion is needed, that invariantly identifies the system states that are in the same phase. To allow for a parameterization-independent definition of phase, we interrelate different phase values by the phase velocity. However, the treatment of stochastic oscillations is complicated by the fact that different definitions of average velocity are possible. For a better understanding of their differences, we analyse effective deterministic phase models of the oscillations based upon the different velocity definitions. Dependent on the application, a certain effective velocity is suitable for a parameterization-independent phase description. In this way, continuous as well pulse-like interactions of stochastic oscillations can be described, as it is demonstrated with simple examples. On the other hand, an invariant criterion of identification is proposed that generalizes the concept of standard (Winfree) isophases. System states of the same phase are identified to belong to the same generalized isophase using the following invariant criterion: All states of an isophase shall become indistinguishable in the course of time. The criterion is interpreted in an average sense for stochastic oscillations. It allows for a unified treatment of different types of stochastic oscillations. Using a numerical estimation algorithm of isophases, the applicability of the theory is demonstrated by a signal of regular human respiration. For chaotic oscillations, generalized isophases can only be obtained up to a certain approximation. The intimate relationship between these approximate isophase, chaotic phase diffusion, and unstable periodic orbits is explained with the example of the chaotic roes oscillator. Together, the concept of generalized isophases and the effective phase theory allow for a unified, and invariant phase description of stochastic and chaotic irregular oscillations.
Jentsch, L., and D. Natroshvili. "Thermoelastic Oscillations of Anisotropic Bodies." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199800871.
Повний текст джерелаRorrer, Ronald Alvin Lee. "Frictional oscillations in elastomeric sliding." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134509/.
Повний текст джерелаBalmforth, N. J. "The theory of stellar oscillations." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358576.
Повний текст джерелаSelbach, Arndt. "Flames with imposed air oscillations." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326245.
Повний текст джерелаRoopun, Anita Kumari. "Cortical network oscillations in vitro." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426852.
Повний текст джерелаColenso, Richard Arthur. "Simulations of neocortical columnar oscillations." Thesis, Open University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412407.
Повний текст джерелаFox, Sarah. "Oscillations memory and Alzheimer's disease." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/oscillations-memory-and-alzheimers-disease(bbacb2f0-74f3-4071-b02f-19c0c5570227).html.
Повний текст джерелаEvesque, Stéphanie Marie-Noelle. "Adaptive control of combustion oscillations." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620985.
Повний текст джерелаGranqvist, Emma. "Patterns of symbiotic calcium oscillations." Thesis, University of East Anglia, 2012. https://ueaeprints.uea.ac.uk/42339/.
Повний текст джерелаKeer, Lucy. "Neutron star oscillations from starquakes." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/363269/.
Повний текст джерелаConrad, Emery David. "Mathematical Models of Biochemical Oscillations." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/32781.
Повний текст джерелаMaster of Science
Allen, Sue. "Rapid oscillations in cataclysmic variables." Master's thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/16374.
Повний текст джерелаCoherent and quasi-periodic rapid oscillations have been seen in the optical and X-ray light curves of more than 30 cataclysmic variables to date. The observational characteristics of these oscillations are reviewed, and current models discussed. To put the observations in context, a detailed review is given of the canonical model of cataclysmic variables and the variations that give rise to its various sub-classes. Observations of two systems of particular interest are presented, and their contributions to the modelling of rapid oscillations are discussed. High-speed photometry of the very bright nova-like variable CPD-48°1577 (IX Velorum) is shown to reveal low-amplitude oscillations with periods between 24 and 31 seconds. The oscillations are present in more than half of the runs, making this variable an attractive target for simultaneous observations in different wavelength bands. The dwarf nova Z Cha is one of four cataclysmic variables which show rapid oscillations as well as primary eclipses. Photometry of z Cha, archived at the University of Cape Town over a period of ten years, is searched for rapid oscillations. Two runs show oscillations, with periods of 24 and 28 seconds. They exhibit eclipse-related phase changes which show qualitative repetition within a run, but significant long-term variation. This behaviour has not been seen in any other cataclysmic variable, and makes z Cha a potentially powerful discriminating tool for models of oscillation and superoutburst.
Nakagawa-Yoshikawa, Harunori. "Instabilités des interfaces sous oscillations." Paris 6, 2006. http://www.theses.fr/2006PA066303.
Повний текст джерелаHoubad, Mekki. "Oscillations, feuilletages, lois de Burger." Rennes 1, 2010. http://www.theses.fr/2010REN1S099.
Повний текст джерелаIn this work, we construct large amplitude oscillating waves which are local solutions on some open domain of the time-space of both the three dimensional Burger equations (without source term) and the incompressible Euler equations (without pressure). The solutions are mainly characterized by the fact that the corresponding Jacobian matrices are nilpotent. Our approach consists in performing some nonusual WKB analysis. The main difficulity is to understand what is the geometry of the phases brought into play
Rönnqvist, Kim. "Multimodal characterisation of sensorimotor oscillations." Thesis, Aston University, 2013. http://publications.aston.ac.uk/19564/.
Повний текст джерелаMönke, Gregor. "Stochastic oscillations in living cells." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17211.
Повний текст джерелаIn this work two signaling pathways, involving the tumor suppressor p53 and the second messenger Ca2+ , are to be discussed and modelled. The tumor suppressor p53 shows a pulsatile response in single cells after induction of DNA double strand breaks (DSBs). Except for very high amounts of damage, these pulses appear at irregular times. The concept of excitable systems is employed as a convenient way to model such observed dynamics. An application to biomolecular reaction networks shows the need for a positive feedback within the p53 regulatory network. Exploiting the reported ultrasensitive dynamics of the upstream damage sensor kinases, leads to a simplified excitable kinase-phosphatase model. Coupling that to the canonical negative feedback p53 regulatory loop, is the core idea behind the construction of the excitable p53 model. A detailed bifurcation analysis of the model establishes a robust excitable regime, which can be switched to oscillatory dynamics via a strong DNA damage signal. Driving the p53 model with a stochastic DSB process yields pulsatile dynamics which reflect different experimental scenarios. Intracellular Ca 2+ concentration spikes arise from a hierarchic cascade of stochastic events. An analytical solution strategy, employing a semi-Markovian description and involving Laplace transformations, is devised and successfully applied to a specific Ca2+ model. The new gained insights are then used, to construct a new generic Ca2+ model, which elegantly captures many known features of Ca2+ signaling. In particular the experimentally observed relations between the average and the standard deviation of the inter spike intervals (ISIs) can be explained in a concise way. Finally, the theoretical considerations allow to calculate the stimulus encoding relation, which governs the adaption of the Ca 2+ signals to varying extracellular stimuli. This is predicted to be a fold change response and new experimental results display a strong support of this idea.
Mirandés, Rivera Estefania de. "Bloch oscillations of ultracold atoms." Paris 6, 2006. http://www.theses.fr/2006PA066622.
Повний текст джерелаVidal, Alexandre. "Relaxation et oscillations en salves." Paris 6, 2007. http://www.theses.fr/2007PA066670.
Повний текст джерелаWilquet, Gaston. "Masses, mélange et oscillations de neutrinos." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211058.
Повний текст джерелаThe experimental situation concerning the measurements of neutrinos masses, mixing and oscillation is reviewed, as well as of the underlying phenomenology. A particular attention is given to the CERN experimental program to which I took or take part, CHARM-II, CHORUS and OPERA. In the last chapter, I try to put into perspective the medium and long term experimental programme.
Agrégation de l'enseignement supérieur, Orientation sciences
info:eu-repo/semantics/nonPublished
Chang, Tien Fu. "Wave-induced oscillations in arbitrary harbours." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0006/MQ31552.pdf.
Повний текст джерелаDendis, Alexandros. "Oscillations of a multi-string pendulum." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FDendis.pdf.
Повний текст джерелаThesis Advisor(s): Fotis Papoulias. "June 2007." Description based on title screen as viewed on August 13, 2007. Includes bibliographical references (p. 133). Also available in print.
Bell, Nicole F. "Neutrino oscillations and the early universe /." Connect to thesis, 2000. http://eprints.unimelb.edu.au/archive/00000697.
Повний текст джерелаUgueto, Luis. "Experimental study of density waves oscillations." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22654.
Повний текст джерелаDe, Zilwa Shane Ranel Noel. "Combustion oscillations in sudden-expansion flows." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322706.
Повний текст джерелаRobertson, David. "Transverse oscillations of interacting coronal loops." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538010.
Повний текст джерелаTullet, Peter Francis. "ULF oscillations in the terrestrial magnetosphere." Thesis, Lancaster University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543976.
Повний текст джерелаSchwartzman, David John. "The Functional Role of Gamma Oscillations." Thesis, Oxford Brookes University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515265.
Повний текст джерелаWilsch, Anna. "Neural oscillations in auditory working memory." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-177313.
Повний текст джерелаElevant, Jessica. "CP-violation in Supernova Neutrino Oscillations." Thesis, Linköpings universitet, Teoretisk Fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-109922.
Повний текст джерелаWilson, Sean Odell. "Nonlinear oscillations of a triatomic molecule." Thesis, Monterey California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/5664.
Повний текст джерелаude decreases if the difference of the frequency of the two modes is reduced. We consider the simplest case of a symmetric rectilinear molecule where the coupling has a cubic nonlinearity in addition to a linear restoring force. Approximate analytical results are in good agreement with numerical simulations of the exact equations of motion, although in some cases the actual behavior fundamentally deviates from the perturbative theory. Two physical demonstrations of the instability are described, where the apparatus are a system of gliders coupled by springs and magnets on an air track. Possible quantum mechanical implications are discussed. This work is a fundamental generalization of the parametric instability of two linearly coupled nonlinear oscillators that was reported in a previous investigation.
Jörg, David Josef. "Genetic Oscillations and Vertebrate Embryonic Development." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-159034.
Повний текст джерелаLawrence, Yvonne Millicent. "Intracellular calcium oscillations in mouse oocytes." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240642.
Повний текст джерелаGrosart, Kirsty. "Oscillations and stability of rotating superfluids." Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433829.
Повний текст джерелаKohutova, Petra. "Magnetohydrodynamic oscillations in solar coronal rain." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/106944/.
Повний текст джерелаYang, Qian. "Oscillations in stochastic multi-species interactions." Thesis, University of Bath, 2018. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761013.
Повний текст джерелаHändel, Chris. "Fluctuations and Oscillations in Cell Membranes." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-200703.
Повний текст джерелаKuridze, D. "Magnetohydrodynamic oscillations in chromospheric fine structures." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678708.
Повний текст джерелаAndrews, David Jeremy. "Planetary-period oscillations in Saturn's magnetosphere." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/9995.
Повний текст джерелаBurley, Jonathan Mark Anderson. "Magmatism and glacial cycles : coupled oscillations?" Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:c55a6d98-d222-46de-8500-1ad44d05be75.
Повний текст джерелаSmith, Thomas Charles Brannam. "Thermally driven oscillations in dynamic applications." Thesis, University of Cambridge, 2006. https://www.repository.cam.ac.uk/handle/1810/284059.
Повний текст джерела