Dissertations / Theses on the topic 'Nonlinear projection'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 39 dissertations / theses for your research on the topic 'Nonlinear projection.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Lin, Anhua. "Projection algorithms in nonlinear programming." Available to US Hopkins community, 2003. http://wwwlib.umi.com/dissertations/dlnow/3080715.
Full textVallance, Scott, and scottvallance@internode on net. "Trilinear Projection." Flinders University. School of Informatics & Engineering, 2005. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20050714.113416.
Full textBetcke, Marta. "Iterative projection methods for symmetric nonlinear eigenvalue problems with applications." Berlin dissertation.de, 2007. http://www.dissertation.de/buch.php3?buch=5233.
Full textSwinson, Michael D. "Statistical Modeling of High-Dimensional Nonlinear Systems: A Projection Pursuit Solution." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11232005-204333/.
Full textShapiro, Alexander, Committee Member ; Vidakovic, Brani, Committee Member ; Ume, Charles, Committee Member ; Sadegh, Nader, Committee Chair ; Liang, Steven, Committee Member. Vita.
Rehbein, Nicolai [Verfasser]. "Inexact Iterative Projection Methods for Linear and Nonlinear Eigenvalue Problems / Nicolai Rehbein." München : Verlag Dr. Hut, 2020. http://d-nb.info/1219476250/34.
Full textLiao, Chwen Kai. "Adaptive Control of a Camera-Projection System using Vision-Based Feedback." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/79563.
Full textMaster of Science
Rehbein, Nicolai [Verfasser], and Heinrich [Akademischer Betreuer] Voß. "Inexact iterative projection methods for linear and nonlinear eigenvalue problems / Nicolai Rehbein ; Betreuer: Heinrich Voß." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2020. http://d-nb.info/1206999136/34.
Full textCho, Taewon. "Numerical Methods for Separable Nonlinear Inverse Problems with Constraint and Low Rank." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/82929.
Full textMaster of Science
In various research areas, there are many required measurements which can't be observed due to physical and economical reasons. Instead, these unknown measurements can be recovered by known measurements. This phenomenon can be modeled and be solved by mathematics.
Niskanen, M. (Matti). "A visual training based approach to surface inspection." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514270673.
Full textNigro, Paulo Salvador Britto. "An adaptive model order reduction for nonlinear dynamical problems." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-26122014-122046/.
Full textA Redução de ordem de modelo é necessária, mesmo em uma época onde o processamento paralelo é usado em praticamente qualquer computador pessoal. Os recentes métodos de redução de modelo são ferramentas úteis nos dias de hoje para a redução de processamento de um problema. Este trabalho pretende descrever uma combinação entre POD (Proper Orthogonal Decomposition) e vetores de Ritz para uma projecção de Galerkin eficiente que sofre alterações durante o processamento, comparando o desenvolvimento do erro e a taxa de convergência entre o espaço total e o espaço de projeção, além da verificação de estabilidade do espaço de projeção, levando a uma redução de ordem do modelo adaptativo mais eficiente para problemas dinâmicos não-lineares. Esta redução de modelo é assistida por uma formulação secante, que é atualizado pela formula de BFGS (Broyden - Fletcher- Goldfarb - Shanno) com o intuito de acelerar a convergência do modelo, e uma formulação tangente para a correção do espaço de projeção. Além disso, esta pesquisa mostra que este método permite a correção do modelo reduzido com baixo custo, especialmente quando o clássico POD não é mais eficiente para representar com precisão a solução.
Kolhatkar, Tanmay. "Nonlinear dynamic interactions between a rigid attachment bolted to a thin-walled sheet metal structure." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587124580918153.
Full textHijazi, Abdallah. "Implementation of harmonic balance reduce model order equation." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0139/document.
Full textMOR recently became a well-known research field, due to the interest that it shows in reducing the system, which saves time, memory, and CPU cost for CAD tools. This field contains two branches, linear and nonlinear MOR, the linear MOR is a mature domain with well-established theory and numerical techniques. Meanwhile, nonlinear MOR domain is still stammering, and so far it didn’t show good and successful results in electrical circuit simulation. Some improvements however started to pop-up recently, and research is still going on this field because of the help that it can give to the contemporary simulators, especially with the growth of the electronic chips in terms of size and complexity due to industrial demands towards integrating systems on the same chip. A significant contribution in the MOR technique of HB solution has been proposed a decade ago by E. Gad and M. Nakhla. The technique has shown to provide a substantial system dimension reduction while preserving the precision of the output in steady state analysis. This MOR method uses the technique of projection via Krylov, and it preserves the passivity of the system. However, it suffers a number of important limitations in the construction of the pre-conditioner matrix which is ought to reduce the system. The main limitation is the necessity for explicit factorization as a power series of the equation of the nonlinear devices. This makes the technique difficult to apply in general purpose simulator conditions. This thesis will review the aspects of the nonlinear model order reduction technique for harmonic balance equations, and it will study solutions to overcome the above mentioned limitations, in particular using numerical differentiation approaches
Garzon, Alejandro. "Model-based control of cardiac alternans on one dimensional tissue." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37140.
Full textKasnakoglu, Cosku. "Reduced order modeling, nonlinear analysis and control methods for flow control problems." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1195629380.
Full textHong, Je Hyeong. "Widening the basin of convergence for the bundle adjustment type of problems in computer vision." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275067.
Full textCheaytou, Rima. "Etude des méthodes de pénalité-projection vectorielle pour les équations de Navier-Stokes avec conditions aux limites ouvertes." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4715.
Full textMotivated by solving the incompressible Navier-Stokes equations with open boundary conditions, this thesis studies the Vector Penalty-Projection method denoted VPP, which is a splitting method in time. We first present a literature review of the projection methods addressing the issue of the velocity-pressure coupling in the incompressible Navier-Stokes system. First, we focus on the case of Dirichlet conditions on the entire boundary. The numerical tests show a second-order convergence in time for both the velocity and the pressure. They also show that the VPP method is fast and cheap in terms of number of iterations at each time step. In addition, we established for the Stokes problem optimal error estimates for the velocity and pressure and the numerical experiments are in perfect agreement with the theoretical results. However, the incompressibility constraint is not exactly equal to zero and it scales as O(varepsilondelta t) where $varepsilon$ is a penalty parameter chosen small enough and delta t is the time step. Moreover, we deal with the natural outflow boundary condition. Three types of outflow boundary conditions are presented and numerically tested for the projection step. We perform quantitative comparisons of the results with those obtained by other methods in the literature. Besides, a theoretical study of the VPP method with outflow boundary conditions is stated and the numerical tests prove to be in good agreement with the theoretical results. In the last chapter, we focus on the numerical study of the VPP scheme with a nonlinear open artificial boundary condition modelling a singular load for the unsteady incompressible Navier-Stokes problem
Rejoub, Riad A. "Projective and non-projective systems of first order nonlinear differential equations." Scholarly Commons, 1992. https://scholarlycommons.pacific.edu/uop_etds/2228.
Full textDeshmukh, Rohit. "Model Order Reduction of Incompressible Turbulent Flows." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471618549.
Full textAmara, Ashwini. "Object Detection and Tracking Using Uncalibrated Cameras." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1184.
Full textWilfer, Oleg. "Duality investigations for multi-composed optimization problems with applications in location theory." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-222660.
Full textBandarupalli, Sowmya. "Vehicle detection and tracking using wireless sensors and video cameras." ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/989.
Full textZoltan, Pap. "Projektivni postupci tipa konjugovanih gradijenata za rešavanje nelinearnih monotonih sistema velikih dimenzija." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110614&source=NDLTD&language=en.
Full textProjection based CG methods for solving large-scale nonlinear monotone systems are considered in this thesis. These methods combine hyperplane projection technique with conjugate gradient (CG) search directions. Hyperplane projection method is suitable for monotone systems, because it enables simply globalization, while CG directions are efficient for large-scale nonlinear systems, due to low memory. Projection based CG methods are funcion-value based, they don’t use merit function and derivatives, and because of that they are also suitable for solving nonsmooth monotone systems. The global convergence of these methods are ensured without additional regularity assumptions, so they can be used for solving singular systems.Three new three-term search directions of Fletcher-Reeves type and two new hybrid search directions of Hu-Storey type are defined. PCG algorithm with five new CG type directions is proposed and its global convergence is established. Numerical performances of methods are tested on relevant examples from literature. These results point out that new projection based CG methods have good computational performances. They are efficient, robust and competitive with other methods.
Wilson, Michael J. "Nonlinear projectile attitude estimation with magnetometers and angular rate sensors." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 37 p, 2006. http://proquest.umi.com/pqdweb?did=1163250861&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Full textBarbieri, Nicholas. "Engineering and Application of Ultrafast Laser Pulses and Filamentation in Air." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5602.
Full textPh.D.
Doctorate
Physics
Sciences
Physics
Eveson, S. P. "Theory and application of Hilbert's projective metric to linear and nonlinear problems in positive operator thoery." Thesis, University of Sussex, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316513.
Full textAlves, Renan Santos. "O impacto da política fiscal sobre a atividade econômica ao longo do ciclo econômico: evidências para o Brasil." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/12/12138/tde-15092017-114100/.
Full textThis paper aims to investigate whether government spending multipliers are different according to the state of the business cycle for the Brazilian economy during the period 1999:I-2016:II. In order to do so we use Jordà\'s Local Projection Method to estimate impulse response functions and fiscal multipliers under two different regimes: recession and expansion. To define the different regimes we use several variables commonly used in the literature: the output gap, the capacity utilization level, the GDP growth rate, the unemployment rate and CODACE. The nonlinear model estimations result in larger multipliers, after one and two years, in periods of economic recession than in periods of economic expansion, regardless of the variable chosen to differentiate regimes. However, the multipliers do not seem to be statistically different between regimes. Unfortunately, as observed by Ramey and Zubairy (2017), long historical series are fundamental for the adequate estimation of fiscal multipliers and their absence for the Brazilian economy does not allow anyone to say much about the subject.
Drouot, Adrien. "Stratégies de commande pour la navigation autonome d'un drone projectile miniature." Phd thesis, Université de Lorraine, 2013. http://tel.archives-ouvertes.fr/tel-00921953.
Full textBachouch, Achref. "Numerical Computations for Backward Doubly Stochastic Differential Equations and Nonlinear Stochastic PDEs." Thesis, Le Mans, 2014. http://www.theses.fr/2014LEMA1034/document.
Full textThe purpose of this thesis is to study a numerical method for backward doubly stochastic differential equations (BDSDEs in short). In the last two decades, several methods were proposed to approximate solutions of standard backward stochastic differential equations. In this thesis, we propose an extension of one of these methods to the doubly stochastic framework. Our numerical method allows us to tackle a large class of nonlinear stochastic partial differential equations (SPDEs in short), thanks to their probabilistic interpretation. In the last part, we study a new particle method in the context of shielding studies
Lorenz, Haik. "Texturierung und Visualisierung virtueller 3D-Stadtmodelle." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5387/.
Full textThis thesis concentrates on virtual 3D city models that digitally encode objects, phenomena, and processes in urban environments. Such models have become core elements of geographic information systems and constitute a major component of geovirtual 3D worlds. Expert users make use of virtual 3D city models in various application domains, such as urban planning, radio-network planning, and noise immision simulation. Regular users utilize virtual 3D city models in domains, such as tourism, and entertainment. They intuitively explore photorealistic virtual 3D city models through mainstream applications such as GoogleEarth, which additionally enable users to extend virtual 3D city models by custom 3D models and supplemental information. Creation and rendering of virtual 3D city models comprise a large number of processes, from which texturing and visualization are in the focus of this thesis. In the area of texturing, this thesis presents concepts and techniques for automatic derivation of photo textures from georeferenced oblique aerial imagery and a concept for the integration of surface-bound data into virtual 3D city model datasets. In the area of visualization, this thesis presents concepts and techniques for multiperspective views and for high-quality rendering of nonlinearly projected virtual 3D city models in interactive systems. The automatic derivation of photo textures from georeferenced oblique aerial imagery is a refinement process for a given virtual 3D city model. Our approach uses oblique aerial imagery, since it provides a citywide highly redundant coverage of surfaces, particularly building facades. From this imagery, our approach extracts all views of a given surface and creates a photo texture by selecting the best view on a pixel level. By processing all surfaces, the virtual 3D city model becomes completely textured. This approach has been tested for the official 3D city model of Berlin and the model of the inner city of Munich accessible in GoogleEarth. The integration of surface-bound data, which include textures, into virtual 3D city model datasets has been performed in the context of CityGML, an international standard for the exchange and storage of virtual 3D city models. We derive a data model from a set of use cases and integrate it into the CityGML standard. The data model uses well-known concepts from computer graphics for data representation. Interactive multiperspective views of virtual 3D city models seamlessly supplement a regular perspective view with a second perspective. Such a construction is inspired by panorama maps by H. C. Berann and aims at increasing the amount of information in the image. Key aspect is the construction's use in an interactive system. This thesis presents an approach to create multiperspective views on 3D graphics hardware and exemplifies the extension of bird's eye and pedestrian views. High-quality rendering of nonlinearly projected virtual 3D city models focuses on the implementation of nonlinear projections on 3D graphics hardware. The developed concepts and techniques focus on high image quality. This thesis presents two such concepts, namely dynamic mesh refinement and piecewise perspective projections, which both enable the use of all graphics hardware features, such as screen space gradients and anisotropic texture filtering under nonlinear projections. Both concepts are generic and customizable towards specific projections. They enable the use of common computer graphics effects, such as stylization effects or procedural textures, for nonlinear projections at optimal image quality and interactive frame rates. This thesis comprises essential techniques for virtual 3D city model processing. First, the results of this thesis enable automated creation of textures for and their integration as individual attributes into virtual 3D city models. Hence, this thesis contributes to an improved creation and continuation of textured virtual 3D city models. Furthermore, the results provide novel approaches to and technical solutions for projecting virtual 3D city models in interactive visualizations. Such nonlinear projections are key components of novel user interfaces and interaction techniques for virtual 3D city models, particularly on mobile devices and in immersive environments.
Liao, Ho-En. "Nonlinear system identification via stochastic projection methods." 1993. http://catalog.hathitrust.org/api/volumes/oclc/30707403.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 139-149).
Coleman, Patrick. "Interactive control of nonlinear projection for complex animated scenes." 2004. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=94943&T=F.
Full textChiang, Cheng-Min, and 江政旻. "Automatic Image Distortion Correction for Projection on Nonlinear Surfaces." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/c9amsj.
Full text國立臺北科技大學
機電整合研究所
101
In this study, the virtual scene projected through the projector to the windshield of a car has been corrected by automatic image vision processing to create a surround effect so that the driver will be immersed in a vivid virtual reality. Curved screen projection technology is widely used in the entertainment system, surround movies, virtual reality and then industry. Projection on a curved screen always to produce nonlinear distortion correction which requires tremendous human resources to correct and do not have much flexibility of operation. Therefore, this study analyzed the relationship between screen virtual scenes and real cameras to identify the projected image space corresponding calibration marks, and use the digital image processing technology, such as Canny edge detection and Hough transform, identify each feature marks that needed to corrected to automatically. By using computer instead of a human operator, the present study can save resources as well as to improve the correction efficiency and accuracy.
Tang, Chengcheng. "Design with Nonlinear Constraints." Diss., 2015. http://hdl.handle.net/10754/583926.
Full textRewieÅski, MichaÅ. "A Trajectory Piecewise-Linear Approach to Model Order Reduction and Fast Simulation of Nonlinear Circuits and Micromachined Devices." 2002. http://hdl.handle.net/1721.1/4020.
Full textSingapore-MIT Alliance (SMA)
Müller, Boris. "Brownian Particles in Nonequilibrium Solvents." Doctoral thesis, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0005-12E6-3.
Full textShih-Shou, LO, and 羅仕守. "The Nonlinear Analysis of Angular Motion of Projectile." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/13585852929313847362.
Full text中正理工學院
應用物理學系研究所
86
The flight stability analysis is very important in design of projectiles. As for nonlinear aerodynamic characteristics of the projectiles, the linear theory may become invalid. The objective of the present work is to build a nonlinear model for analysis of the angular motion and the dynamic behaviors of projectiles. In the present study, firstly, a non-dimensionalized set of equations for governing the angular motion of projectiles is developed. To account for the nonlinearities of the system, the involved aerodynamic derivatives, i.e. static stability, aerodynamic damping and lagging, and Magnus moment derivatives are considered as functions of attitude angles. Time evolutions of angle-of-attack and side-slipping angle are obtained by solving nonlinear equations by using forth-order Runge-Kutta scheme. Phase diagrams, power spectra and water-fall diagrams are used as tools for analysis of dynamic behaviors of the system. By investigating a typical projectile, it is found that the results with the nonlinear aerodynamic derivatives may be different from those in the linear analysis at some conditions. The frequencies of the angular motion are strongly influenced by a dimensionless spin rate, while the other parameters only have little effects.
Krčmář, Jindřich. "Teorie elektron-fononové interakce v modelovém otevřeném kvantovém systému." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-300533.
Full textWilfer, Oleg. "Duality investigations for multi-composed optimization problems with applications in location theory." Doctoral thesis, 2016. https://monarch.qucosa.de/id/qucosa%3A20674.
Full textOchoa, Mayorga Victor Manuel. "Geometric approach to multi-scale 3D gesture comparison." Phd thesis, 2010. http://hdl.handle.net/10048/1530.
Full text