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 284 for “"Large-range"”.
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Design and control of high-speed and large-range atomic force microscope
… capable of high-speed imaging while maintaining large out-of-plane and lateral scan ranges. The primary contributions of this thesis include the design and implementation of a high-speed and large-range AFM; design, implementation and control of a multi-actuated nano-positioner; development of a …
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Design and Control of Versatile High-Speed and Large-Range Atomic Force Microscopes
… nano-positioners are designed with high-speed, large-range or low-cost characteristics for different scanning needs. Coated active cantilever probes are developed for AFM imaging in specialized opaque environments. Multiple algorithms for scanner control, automatic tuning, and image formation …
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A Novel Long-Range Passive UHF RFID System over Twisted-pair Cable
… However, due to its high cost, limited read range, and uncertain reliability, its adoption still lags, especially in large-scale organisations. Even though an RFID distributed antenna system (DAS) can greatly improve the detection range and read rate of a single reader when system uses …
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A dynamic circuit-based model for ferromagnetic materials
… reluctance machines are able to operate over a large range in speed. A fully loaded SRM is typically designed to saturate the ferromagnetic material that comprises the stator and rotor of the machine whereas a lightly loaded machine does not. Therefore, the model of the machine should be able to …
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Estudo sobre a qualidade da resposta dinâmica do Método de Superposição dos Modos de Lanczos
… Superposition Method for structures submitted to large range of excitation periods is carried out. The unbalanced equation of motion, or residual, was evaluated from global parameters to address the response quality of a modal superposition method with load-dependent basis generated by …
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Approximation formulas for the incomplete beta-function
… difficulty in fitting the function over a larger area. This thesis, other than the area fitted, has pointed out some of the problems that must be solved before adequate approximations over a large range can be developed.
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Analysis of Buckled and Pre-bent Columns Used as Vibration Isolators
… transmissibility of the supported load over a large range of frequencies. Effective models reduce the motion of the supported load over a large range of frequencies.
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A Dynamic Application Analysis Framework
… ahead of time and using it to facilitate a large range of runtime analyses and optimizations. We demonstrate one such analysis by performing swift, safe analysis during profiling of threaded, dynamically linked, adaptively compiled applications. In our framework, we focus on one such …
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Nonlinear beam-based vibration energy harvesters and load cells
… tests verified the spring theory for a large range of oscillator parameters. Various human motion energy harvester configurations that use the nonlinear spring were numerically optimized for power, robustness, and adaptivity. Based on the optimization results, both the nonlinear and …
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Numerical Simulations of Supercavitating Propellers and Hydrofoils
… are validated against experimental data for a range of operating conditions and their discrepancies from experimental trends are quantified. The predicted solutions from both methods closely overlap with experimental data and contain an experimental error in the order of 10% for a large range …
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Design of a two-stage multi-state experimental biogas reactor
… of a lab-scale experimental reactor with a large range of functionality. The design permits many different environmental conditions, allowing anaerobic digestion to be thoroughly studied with one setup.
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The Application of Tapping Techniques in Compositions for the Solo Electric Bass
… musical material, including; contrapuntal forms, large range discrepancies, high velocity monophonic lines, and many others. The intent of this paper is to provide a resource in which knowledge regarding the limitations and possibilities of the technique can be obtained and empower composers in …
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AREA-INTENSITY RELATIONSHIPS AND BRIGHTNESS
… is to quantify spatial summation effects for a large range of stimulus sizes at two suprathreshold luminance levels and two stimulus presentation methods (binocular and haploscopic). Two experiments were performed. In the first experiment, the brightness matching technique was employed and in …
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Mathematical demography of the Cape vulture
… Vulture Gyps coprotheres is one of the world's largest avian scavengers and was once widely distributed in southern Africa, to which it is endemic. It has suffered major changes of fortune in recorded history and has, at least twice, undergone large range contractions and expansions in the Cape …
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Optical system for high-speed Atomic Force Microscope
… scanner moves in the X-Y plane at 1KHz over a large range of 50x50 microns. To achieve these requirements, we evaluated a number of design concepts among which the lever method and the fiber collimator method were selected. Experiments were performed to characterize the performance of the …
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Factors affecting piston ring friction
… concentrated on the oil control ring friction. A large range of ring land widths and tensions, liner finish, and oil viscosity were investigated both experimentally and numerically to reveal how different factors affect the piston ring friction. A floating liner engine (FLE) was modified for …
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Classical Hamiltonian dynamics of a particle interacting with the vibrational modes of a one-dimensional medium
… modes of the local medium are important to a large range of physical processes. The complex behavior and underlying properties of polaron dynamics has been the focus of much research for many years. Since the exact quantum mechanical dynamics of the interacting particle/many-oscillator system …
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Rapid Solidification and Undercooling of Aluminum-Germanium Alloys: Characterization and Control of Microstructure (Metastability, Metallic Glass, Electron Microscopy)
… the liquid or semi-solid state over a fairly large range while observing directly the various solidification microstructures. Further, a heating stage may be used either to measure the liquid undercoolings achieved upon slowly cooling or to select substrate temperatures (and so affect the …
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Stochastic acoustic ray tracing with dynamically orthogonal equations
… processes and the need to provide results on a large range of scales. Furthermore, the ocean itself is an inherently dynamic environment within the multiple scales. Even if we could measure the exact properties at a specific instant, the ocean will continue to change in the smallest temporal …
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Design and implementation of cantilever probe holder for tapping mode atomic force microscopy
… implemented in a previously designed high-speed, large-range atomic force microscope (AFM). This AFM used a cantilever probe holder that was only capable of contact mode operation, placing limitations on imaging speed and increasing the risk of probe tip damage. Therefore, the focus of this thesis …
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