Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 6769 for “"Nonlinear"”.
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Discrete Nonlinear Wave Propagation In Kerr Nonlinear Media
… this class of systems since the late 1960's. Nonlinear discrete optics has received a considerable amount of interest in the last few years, triggered by the experimental realization of discrete solitons in a Kerr nonlinear AlGaAs waveguide array by H. Eisenberg and coworkers in 1998. In this …
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Nonlinear eigenvalue problems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1998.
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Nonlinear cable dynamics
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1987.
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Approximate nonlinear estimation.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1968
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Nonlinear traveltime tomography
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1993.
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Nonlinear PID controller
An algorithm to design simple gain scheduled nonlinear PID controllers for nonlinear plants is investigated. Design information is obtained from measurements of the nonlinear plant about selected equilibrium points. Simulations are performed on two different nonlinear CSTR models. The first …
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Nonlinear Behaviors Analysis and Nonlinear Characteristics Diagnosing of Mechanical Vibration Systems
… understanding and effective diagnosis of nonlinear behaviors are important in dynamical analyses of mechanical systems and may provide crucial guidance to the design and control of mechanical systems. In this research, the nonlinear behavior and stability of an elastic suspended cable …
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Iterative nonlinear beam propagation method and its application in nonlinear devices
In this thesis, an iterative nonlinear beam propagation method is introduced and applied to optical devices. This method is based on Hamiltonian ray tracing and the Wigner distribution function. First, wave propagation simulation using Hamiltonian ray tracing is illustrated and verified with …
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Analytical amd experimental aspects of nonlinear normal modes and nonlinear mode localization
In this work, several aspects of nonlinear normal modes (NNMs) and free and forced nonlinear mode localization are investigated. In the first phase of the work, new asymptotic methodologies based on the concept of NNM are developed in order to compute synchronous responses for two classes of …
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Coupled nonlinear dynamical systems
In this dissertation, we study coupled nonlinear dynamical systems that exhibit new types of complex behavior. We numerically and analytically examine a variety of dynamical models, ranging from systems of ordinary differential equations (ODE) with novel elements of feedback to systems of partial …
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Geometrically Nonlinear Aeroelastic Scaling
… methodologies are developed for geometrically nonlinear applications. The new methods are demonstrated by designing an aeroelastically scaled model of a suitably nonlinear full-scale joined-wing aircraft. The best of the methods produce scaled models that closely replicate the target …
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Nonlinear network vector autoregression
… many important macroeconomic time series exhibit nonlinear characteristics. If this non-linear feature is ignored, the conclusion is likely to be wrong by only using linear analysis. Therefore, it is necessary to expand the linear model and propose nonlinear methods. Economic theory also shows …
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Integrable Nonlinear Relativistic Equations
This work focuses on three nonlinear relativistic equations: the symmetric Chiral field equation, Einstein's field equation for metrics with two commuting Killing vectors and Einstein's field equation for diagonal metrics that depend on three variables. The symmetric Chiral field equation is …
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Unconstrained Nonlinear Discrete Search
Made available in DSpace on 2014-12-13T19:55:24Z (GMT). No. of bitstreams: 1 7709001.pdf: 5423846 bytes, checksum: b37256913660fca051eab0333a7a51ac (MD5) Previous issue date: 1976
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Duality for nonlinear filtering
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Theory of nonlinear transducers
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1950.
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Nonlinear design in nanophotonics
In the first part of this thesis, we present a new technique for the design of transformation optics devices based on large-scale optimization to achieve the optimal effective isotropic dielectric materials within prescribed index bounds. In addition to the optimization, a key point is the …
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Twinning and nonlinear optics
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1984.
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TECTURE: A Nonlinear Retrospect
The nature of this hierarchical progression in design can be described as a triadic composition, where this composition has a relationship between one component to the next as a simultaneous progression. The first component plays a major role to the intermediate component, and the intermediate one …
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