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 18 of 18 for “"Observed signal"”.
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Approximate signal reconstruction from partial information
… not represent an optimal way in which to code a signal in terms of theoretical rate distortion bounds. A signal may be coded more efficiently if side information is included with the signal during transmission. This side information can then be used to reconstruct the image at some later time. In …
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Structural and plasmonic properties of gold nanocrystals
… are in addition to the other more commonly observed effects such as nanocrystal shape. With such a wide number of variables in play, a series of studies breaking down each of these components and their contribution to the observed enhancement is warranted. In this thesis, a series of …
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A case study in robust quickest detection for hidden Markov models
… abrupt changes in the statistical behavior of an observed signal in real-time. The literature has focused much attention on the problem for i.i.d. observations. In this thesis, we assess the feasibility of two HMM quickest detection frameworks recently suggested for detecting rare events in a real …
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A quasi-model-independent search strategy for new high-pT physics at Tevatron Run II
… measure of the "interestingness" of any observed signal. This algorithm will also be used with small modifications at the Large Hadron Collider at CERN. In addition, a new detector simulation, TurboSim, was tested for physics analysis use for the first time.
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In Vivo Fluorometric Assessment of the Skin Microcirculation
… to describe the fluorescein dermofluorometer signal in terms of the local blood flow and capillary permeability. The fluorescein signal is characterized by a wash-in time constant dependent on both the blood flow and permeability. Under flow-limited conditions the wash-in time constant is …
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Fluctuations in dc SQUIDs: Quantum Noise Effects, Low Frequency Noise, and Single Electron Trapping
We have studied the signal and noise properties of extremely sensitive dc SQUIDs composed of submicron area tunnel junctions. At high frequencies, the flux resolution is expected to be limited by intrinsic quantum fluctuations, making these devices prime candidates for ideal quantum-limited …
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Quantum recurrent neural networks for filtering
… (pdf) for the measurements of the observed system. In this thesis, a filter isdesigned based on the principles of quantum mechanics where the schrodinger waveequation (SWE) plays the key part. This equation is transformed to fit into the neuralnetwork architecture. Each neuron in …
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Nonlinear Doppler Warp Correction for Acoustic OFDM
… breaks down is that the Doppler effect that the signal undergoes can be modelled with a simple shift in frequency, since the signals used to communicate in a UWA channel are effectively wideband. In this work the Doppler Effect that a signal undergoes is modelled as a nonlinear time warp. A …
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Optimal and Suboptimal Signal Detection-On the Relationship Between Estimation and Detection Theory
… Group (MIG) while the maximum information of the observed signal is preserved. We prove that any invariant test with respect to the MIG is CFAR. Then, we introduce the UMP-CFAR test as the optimal CFAR bound among all CFAR tests. In the third part, the asymptotical optimality of the CFAR tests is …
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DRINKING INDUCED BY SECOND-ORDER FOOD SCHEDULES: MULTIPLE CONTROLLING FACTORS
… lick bouts.</p><p>In Experiment 2, auditory signals informed animals, throughout each component, of the outcome (food or stimulus presentation) to follow the component. A clear discrimination in lever-pressing between pre-food and pre-stimulus signals was observed. Signal effects on drinking …
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Essays on Corporate Finance Theory and Dynamic Games
… Our model also predicts that, due to endogenous signal manipulation, too much transparency can inhibit learning. As the players get arbitrarily patient, the principal elicits no useful information from the observed signal. In Chapter 3, joint work with Dan Luo, we study SPACs in a continuous-time …
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Target localization in passive and active systems : performance bonds
… of localization techniques as a function of signal-to-noise ratio (SNR) and of system parameters. To this end, lower bounds on the maximum likelihood estimator (MLE) performance are studied. The Cramer-Rao lower bound (CRLB) for coherent passive localization of a near-field source is derived. …
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Emergency care assessment tool for health facilities: a validity study in Cameroon
… These interventions are referred to as signal functions for the six sentinel conditions that occur prior to death: respiratory failure, shock, altered mental status, severe pain/trauma, and dangerous fever. A signal function represents the culmination of knowledge of interventions, …
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Towards single Ce ion detection in a bulk crystal for the development of a single-ion qubit readout scheme
… made of the number of ions contributing to an observed signal. A trial experiment to investigate whether the signal was emitted by a single Ce ion was carried out, but was unsuccessful. Potential reasons why the experiment failed are presented.
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Scalable functional validation of next generation SoCs
… application level to select high-quality signals that are most beneficial for post-silicon debug and diagnosis. We apply a feature engineering based machine learning technique on the observed signal data to develop an automatic, scalable, and efficient post-silicon debug and diagnosis …
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System Design, Noise Reduction, and Improved Dimension Reconstruction for High Performance Ellipsometry
… noise induced errors are studied, including signal strength, the signal sampling frequency, and the first-order coefficient between the signal variance and mean. This thesis then proposes a signal demodulation method in spectroscopic ellipsometry based on maximum likelihood, in order to …
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Plasmon supported defect absorption in amorphous silicon thin film solar cells and devices
… an external quantum efficiency (EQE) signal is observed for photon energies below the bandgap of a-Si:H. States must be present that allow transitions for sub-bandgap energies. By a variation of the Ag NP position within the applied devices the role of interface states is evaluated. It …