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.
Results
Showing 1 to 20 of 28 for “"statistical behavior"”.
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Two-photon fluctuation correlation spectroscopy: Method and applications to protein aggregation and intracellular diffusion
… of microscopic systems. The method monitors the statistical behavior of spontaneous equilibrium fluctuations in number occupation of a fluorescent species in a subvolume of a sample. Microscopic models have been developed which relate observed statistical fluctuations in fluorescence observables …
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A case study in robust quickest detection for hidden Markov models
… the problem of detecting 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 …
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Higher-order moments of entanglement estimators over generic state ensembles
… entanglement capacity. This work focuses on the statistical behavior of the entanglement indicators over two generic state ensembles -- the Hilbert-Schmidt ensemble and the fermionic Gaussian ensemble. For the Hilbert-Schmidt ensemble, expressions of the first three exact cumulants of von Neumann …
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Anomalous statistical properties and fluctuations on multiple timescales
… class of systems. Once the type of anomalous statistical behavior is classified, one might ask what the dynamical origin of the effects is. Especially the property of long range temporal correlations (the Joseph effect) is discussed in detail. In measurements, they might arise from different …
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Multimedia Security and Copyright Protection
… the Encryption Algorithm, which utilizes the statistical behavior of MPEG compressed video. The statistical analysis of MPEG compressed video streams shows that the plain-text of compressed video has its own unique properties and is very different from text and other data types. This …
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A trajectory equation for walking droplets : hydrodynamic pilot-wave theory
… complex walker dynamics give rise to a coherent statistical behavior with wave-like features. We characterize the progression from quantized orbits to chaotic dynamics as the vibrational forcing is increased progressively. We then describe the dynamics of a weakly-accelerating walker in terms of …
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Lévy processes in credit risk and market models
… real-life financial data provides a different statistical behavior than that implied by these models. Lévy processes are an appropriate tool to increase accuracy of models in finance. They have been used to model stock prices, and term structures of interest rates, thus allowing more accurate …
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Man-made impulsive noise on the 137 MHz VHF LEOSAT channel
… frequencies and below. This thesis examines the statistical behavior of man-made noise through a series of in situ measurements, and implements a statistical-physical mathematical model to provide bit-error rate (BER) predictions for system designers. The model is also applied in an attempt to …
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A Behavior-based Approach Towards Statistics-Preserving Network Trace Anonymization
… focused on traffic content, analysis based on statistical behavior patterns within network traffic has, so far, been under-explored. This thesis proposes a new behavior-based approach towards network trace source-anonymization, motivated by the concept of anonymity-by-crowds, and conditioned on …
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Simulation of High Frequency Waves Reflected From a Turbulent Ionosphere for Spread Spectrum Systems
… coherence function is computed to determine the statistical behavior of the received signal. The coherence bandwidth resulting from this computation is used to assess the ionospheric effects on HF spread spectrum systems.
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Statistical aspects of optimal transport
… and more. In this thesis, we study several statistical problems at the forefront of applied optimal transport, prioritizing statistically and computationally practical results. We begin by considering one of the most popular applications of OT in practice, the barycenter problem, providing …
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Model-based spectral inference in noisy physical time series: applications in laser linewidth estimation and precision magnetometry
… temporally correlated noise, and limited statistical res- olution, particularly in low-SNR regimes. Standard approaches frequently overlook physical structure and fail to propagate uncertainty properly, motivating inference methods that integrate domain-specific knowledge, parametric …
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Characterization and modeling of ESD events and near-field scanning calibration structures
… to electronic touchscreens is investigated. The statistical behavior of the induced currents is determined for different parameters such as a change in glass thickness, indium tin oxide layer equivalent resistance, sensor spacing to the ground plane, ESD generator air discharge polarity and test …
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An Investigation of Carrier Recovery Techniques for PSK Modulated Signals in CDMA and Mulipath Mobile Environments
… ML phase estimator is proposed. The statistical behavior of this new structure as well as the related squaring estimator are examined and are shown to be equivalent to the stochastic performance of classical closed-loop techniques. Candidate receivers based upon closed- and open-loop …
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Bayesian Methods for Source Separation in Magnetoencephalography
… a mixture prior which incorporates the different statistical characteristics of the sources of interest and the noise sources. In addition, we propose a novel depth-scanning algorithm to identify and localize deep focal sources, overcoming the tendency of MEG inverse methods to explain all data …
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Estimation of the In-Cylinder Air/Fuel Ratio of an Internal Combustion Engine by the Use of Pressure Sensors
… least-squares problem. Both methods show good statistical behavior. Estimation error variances are inversely proportional to the number of pressure samples used for the estimation as predicted by the central limit theorem.
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Εντοπισμός και γραμμική απόκριση ηλεκτρονίων στο άτακτο πλέγμα
… by allowing for the calculation of their statistical behavior through the probability distributions mentioned above. We investigate likewise the conductivity properties thoroughly and from various points of view, since it is a very important field in which few exact results exist, …
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A Ray-Based Investigation of the Statistical Characteristics and Efficient Representation of Multi-Antenna Communication Channels
… transfer. Ray-tracing methods predict the behavior of wireless channels using a model of the propagation environment and are a low-cost alternative to direct measurements. We use ray tracing simulations to validate the statistical time and angle of arrival characteristics of an indoor …
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Skeletal Muscle Response During the Isometric Phase of an Unrestricted Isotonic Contraction (Electromyography, Electromechanical Delay)
… to the concentric contraction phase using a statistical model. The model was based upon the anatomical, physiological and mechanical relationships of the involved variables. Fifteen male subjects performed a series of 10 elbow extensions from three initial joint positions and four normalized …
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The Billiard problem
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T14:31:27Z No. of bitstreams: 1 1985_friedman.pdf: 2886336 bytes, checksum: acbf489631db3b034fef2d07a0005622 (MD5)
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