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 788 for “"Nonlinearity."”.
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Nonlinearity engineering with the Quarton
… and applications of a new technique we call "nonlinearity engineering" using a recent superconducting qubit, the Quarton. In traditional nonlinear optics, nonlinear effects are usually weak perturbations to linear interactions. Similarly, microwave quantum optics with superconducting circuits …
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Characterization of nonlinearity parameters in an elastic material with quadratic nonlinearity with a complex wave field
… in an elastic half-space with a quadratic nonlinearity in its stress-strain relationship. Different boundary conditions on the surface are considered that result in both one- and two-dimensional wave propagation problems. The goal of the research is to examine the generation of second-order …
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The Effect of Receiver Nonlinearity and Nonlinearity Induced Interference on the Performance of Amplitude Modulated Signals
All wireless receivers have some degree of nonlinearity that can negatively impact performance. Two major effects from this nonlinearity are power compression, which leads to amplitude and phase distortions in the received signal, and desensitization caused by a high powered interfering signal at …
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CMOS current amplifiers : speed versus nonlinearity
This work deals with analogue integrated circuit design using various types of current-mode amplifiers. These circuits are analysed and realised using modern CMOS integration technologies. The dynamic nonlinearities of these circuits are discussed in detail as in the literature only linear …
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An investigation of giant Kerr nonlinearity
… of an atomic system exhibiting a giant Kerr nonlinearity. The atomic energy level scheme involves four energy levels. A three level A subsystem in the atom exhibits the effect of electromagnetically induced transparency (EIT), reducing the spontaneous emission noise. The fourth level leads to …
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Holey optical fibres for high nonlinearity devices
… incorporation in optical devices based on fibre nonlinearity. The development of the fabrication technique to produce such a fibre is discussed, and the fibres produced are characterized and used in device applications, proving the advantages of HF technology in the implementation of highly …
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Radiation Pressure induced Nonlinearity in Micro-droplet
… potentially lead to single-photon level optical nonlinearity. Specifically, we experimentally characterize a droplet (D~500um) of index matching fluid submerged in the water as a high-Q optical resonator, where we use an optical fiber taper to couple light into the droplet through non-contact …
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Third Order Nonlinearity In III-Nitride Microwave Switches
… Intermodulation distortions occur due to device nonlinearity when multiple input frequencies produce undesired output signals. 3rd order intermodulation product is very important because it occurs in the frequency range close to that of fundamental signals and is impossible to filter out. The …
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Nonlinearity and Gestalt Therapy : Back to the Beginning
<p>Gestalt methods are explored in the context of the nonlinear view. The original Lewinian equations are updated to the current notions of nonlinear dynamics and current Gestalt Therapy theory. Ordinary differential equations and nonlinear processes are applied some of the key features of Gestalt …
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Hypertext navigation: Nonlinearity of exploration and its correlates
… patterns with an emphasis on the measurement of nonlinearity of navigation and whether navigation patterns are related to individual differences in such things as verbal aptitude, prior knowledge, and epistemic beliefs and preferences. Also, this study examined the effects on navigation patterns …
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Ultrasonic reflection mode imaging of the acoustic nonlinearity parameter
The problem of mathematically modeling the nonlinear interaction of ultrasound beams is addressed. The counterpropagation model is studied and a new model, called the copropagation reflection model, is proposed. The new model shows that the copropagation of the probe and the reflected pump leads to …
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Thermal nonlinearity in radio frequency piezoelectric laterally vibrating resonators
Made available in DSpace on 2017-08-10T19:16:14Z (GMT). No. of bitstreams: 2 LU-THESIS-2017.pdf: 5134611 bytes, checksum: 3b05e47a1c68b4bc9eb2973a7e4ae2cb (MD5) LICENSE.txt: 4207 bytes, checksum: a0a71b79182cbf402ee538e2881f18eb (MD5) Previous issue date: 2017-04-27
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Particle Transport in Confinement: Nonlinearity, Compressibility, and Steric Effects
Water with particulates flowing through various confinements is ubiquitous, both in natural and synthetic systems, such as biological cell membranes, porous media, and micro-/nanofluidic devices. Understanding the detailed transport mechanism of both, water and particulates in such systems, is the …
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Terahertz-field-induced nonlinearity in phonons, electrons and spins
In this thesis, I describe work aimed at understanding nonlinear material responses initiated by strong terahertz (THz) field excitation. I discuss two aspects of nonlinear THz spectroscopy in condensed-matter materials: developments of experimental THz capabilities and spectroscopy methods and …
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Development and applications of dispersion controlled high nonlinearity microstructured fibres
… aspects of dispersion controlled high nonlinearity all silica holey fibre, including design, fabrication, sample applications, and modelling.<br/><br/>Microstructured fibre fabrication allows for great flexibility in core and cladding structure designs, with the large available …
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Synchronization, Variability, and Nonlinearity Analysis: Applications to Physiological Time Series
… thesis, we study synchronization, variability, nonlinearity analysis and their applications in physiological time series. For synchronization analysis, we explore both intensity and directionality of interaction. We propose a computational method to specify frequency ratio n : m, detect the …
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Nonlinearity as Care: Black, Feminist, and Queer Temporalities of History
<p>In this dissertation, I offer a study of the dominant framework of history in the United States and its linear-progressive temporality, and suggest that such a temporality (seemingly paradoxically) forecloses futures that disrupt patterns of historical violence. I argue that the creation of …
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Vibro-acoustic dynamics in the presence of uncertainty and nonlinearity
… to linear systems. However, it is typical for nonlinearity to arise in real engineering systems. This may be localised, for instance, in a joint of a structure due to mechanisms like friction, or more distributed in a component, such as in cases of geometric nonlinearity or material hysteresis. …
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Mechanical metamaterials for wave control: Effects of modularity and nonlinearity
DSpace SAF Submission Ingestion Package generated from Vireo submission #16927 on 2022-01-12 at 13:04:55
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