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 2334 for “"high frequency"”.
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High frequency surface estimation
Mountain generation can be considered a part of the general theory of surface estimation; In this thesis, two methods have been presented to generate fractals--fast Fourier method and a new generalized stochastic subdivision method. Also, a new surface estimation method has been introduced that …
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High Frequency Transmission Spectroscopy
High Frequency Transmission Spectroscopy is a novel technique for the characterization of a wide range of materials in a diverse set of problem domains. HFTS has potential implications for problem domains such as semiconductor manufacturing and counterfeit detection, disease/infection screening, …
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A high frequency bridge
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1925
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High Frequency Study of Magnetic Nanostructures
<p>The work in this thesis is divided in three parts. In part one we developed electrodeposition method of Nickel Nanowire in commercial AAO template in constant current (Galvanostatic) mode, further we tried to estimate the growth rate from theory, from saturation magnetization and direct …
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A Standalone High Frequency Receiver System
The High Frequency Receiver System (HFRS) is a mobile, autonomous, Linux-based RF recording system that is designed to pick up ionosonde sounding signals from 1—10 MHz. Systems are designed for quick deployment and capable of remaining deployed in the field for up to a month. The design motivation …
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Order Behavior In High Frequency Markets
… on three aspects of flash crashes: crash frequency, crash triggers, and the impact on market quality once the crash has seceded.</p>
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High frequency activity preceding epileptic seizures
High frequency activity (>100 Hz, HFA) is suggested to be related to seizure genesis, but the mechanism of the HFA is not clear. In the present work HFAs and epileptic features including electrographic seizures (trains of hypersynchronous population spikes lasting ~46 sec) and interictal discharges …
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High Frequency LTCC based Planar Transformer
<p>As we move towards high power and higher frequency related technology, conventional wire-wound magnetics have their own limitations which has led path to the development of planar based magnetic materials. Nowadays more planar magnetic technology has been employed because it is easier to …
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High frequency surface wave radar demonstrator
High Frequency Surface Wave Radar (HFSWR) is used around the globe for the mapping of sea currents and coastal monitoring of the Exclusive Economic Zone. Decision to build an HF radar at the University of Cape Town (UCT) was made by Daniel O’Hagan and Andrew Wilkinson in February 2015 immediately …
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Spectral analysis of high-frequency finance
… a set of spectral techniques, including a frequency-specific correlation and a frequency decomposition of trading strategy profits. Then, we demonstrate the application of these techniques in an empirical analysis of high-frequency dynamics over the years 1995-2014. Our results consist of …
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Developing high-frequency equities trading models
… there are opportunities to generate alpha in the high frequency environment of the US equity market, using Principal Component Analysis (PCA hereafter) as a basis for short term valuation and market movements prediction. The time frame of trades and holding periods we are analyzing oscillate …
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High-Frequency Electronics for Contactless Dielectrophoresis
… This work presents two methods for providing the high-voltage and high-frequency signal necessary to generate a non-uniform electric field in the sample channel of a cDEP device. The first method, an oscillator-based system, was able to produce DEP trapping and pearl-chaining of THP-1 and MCF-7 …
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High Frequency Magnetic Core Loss Study
… core loss. The core loss depends on the AC flux frequency, amplitude, waveform, DC bias and temperature. These dependences are nonlinear and difficult to predict. How to measure, model and analyze the core loss is a challenge for decades. In this dissertation, two new core loss measurement …
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High-frequency quasi-resonant converter techniques
… quasi-resonant (QRC) converters are suitable for high-frequency operations with much improved performances and equipment power density. Employing the duality principle, the duality relationship between these two families of quasi-resonant converters are derived. The establishment of the duality …
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High Frequency Ethernet Cabling Analysis and Optimization
… the actual performance obtained. The need for higher bandwidth to accommodate increasing demand for multimedia services and data centers network infrastructure led to the formation of IEEE P802.3bq to create standards for 40GBASE-T over twisted pair cables. The 40GBASE-T is expected to offer …
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Cavity Flows Control by High Frequency Forcing
… recently discovered that exciting the flow at high frequencies it is possible to suppress or weaken the undesired effects in a wide range of flow conditions. Additionally, this forcing can be generated by a simple Von Karman wake. In this way both advantages, simplicity and a wide operational …
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High frequency titrations in acetic acid media
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Chemistry, 1954
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