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 126 for “"Arrival Time"”.
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Photon Arrival Time Quantum Random Number Generation
… We previously proposed that by instead using the time interval between detections, much more random information could be extracted per detection event. Specifically, instead of only one bit per detection, in principle one could extract as many bits as the measurement time resolution would allow. …
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Sequential bayesian filtering for spatial arrival time estimation
… proposed. The focus here is on inversion using arrival times of identified paths within recorded time-series. After a short study of a linearization techniques employing such features and numerical issues on their implementation, we turn our attention to the need for accurate extraction of …
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Bus arrival time prediction using stochastic time series and Markov chains
… users with reliable information about bus arrival times at bus stops has become increasingly attractive. Due to the fact that bus operation parameters and variables are highly stochastic, modeling prediction of bus travel and arrival times has become one of the many challenging tasks. …
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Device-type Profiling using Packet Inter-Arrival Time for Network Access Control
… Filtering Technique (IFT) that uses packet Inter-Arrival Time (IAT) data for smartphones, tablets and laptops to profile and identify abnormal patterns based on device-types. The IFT is composed of three data mining algorithms, namely K-means clustering, clustering-based multivariate gaussian …
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Optimal arrival time and airspeed selection in the presence of wind uncertainty
… on these meteorological predictions, ensuring timely and efficient arrivals at destination airports remains an ongoing challenge; primarily due to the inaccuracies and uncertainties inherent in such forecasts. This challenge is further compounded in scenarios involving multiple aircraft, where …
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Development of Arrival Time Based Uniform Delay Models for Oversaturated Signalized Intersections
… queue conditions. Statistical comparisons for Arrival Type 6 were not conducted since there might not be practical meaning for Arrival Type 6 in oversaturated traffic conditions. The results of sensitivity analysis for the proposed model to various green to cycle ratios showed that delay …
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Joint hypocenter-velocity inversion of local earthquake arrival time data in two geothermal regions
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1991.
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Automatic P-wave Picking of Microseismic Events in Underground Mines
This thesis investigates microseismic P-wave arrival time detection performance of automatic picking algorithms, as well as the handpicking performance of human experts. The data set used in this project was collected from Malmberget mine (LKAB, Sweden) and the handpicked P-wave arrivals were …
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An Examination of the Variability of Migratory Timing Statistics Estimated From Catch and Effort Observations
<p>The estimate of the mean arrival time based on catch or CPUE of fishes migrating into a fixed harvest area is a function of the number of days fished. Simulation studies using chinook salmon catch and effort data from the Yukon River delta, Alaska indicate that fishing effort concentrated at the …
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MODELING THE INFLUENCE OF THE HETEROGENEOUS SUBSTRATE ON THE TRANSPORT OF THE JET FUEL SOLUTE PLUME, KIRTLAND AIR FORCE BASE, ALBUQUERQUE, NEW MEXICO
… resulted in a faster than average breakthrough time while, if low conductivity materials were placed in the travel path, particles were either forced to divert around the low K material, which added time and changed the direction of travel, or were forced by the hydraulic gradient to move …
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Analysis of shock propagation in the magnetosheath
… events in the solar wind were calculated. The time of their arrival at a spacecraft in the magnetosheath was determined. The predicted arrival time, assuming a constant shock speed from the spacecraft in the solar wind to the spacecraft in the magnetosheath is then compared to the actual …
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Ankunftszeitbestimmung ultrakurzer XUV Pulse von FLASH durch Kreuzkorrelation mit ultrakurzen NIR Pulsen
… can be performed. Currently, the ultimate time resolution given by the pulse duration of both pulses is not achievable due to unpredictable shot-to-shot arrival time fluctuations of the FLASH pulses. The temporal resolution will be significantly improved, if the random delay fluctuations …
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Automatic First Break Detection by Spectral Decomposition Using Minimum Uncertainty Wavelets
… and whose interpretation can consume a lot of time. The transforma- tion in the computational efficiency suggests the involvement of computers in interpreting the measured data. We suggest a new method of first break detec- tion that is based on time-frequency spectral decomposition method and …
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Seismic Data Processing and Interpretation via Deep Learning
… 4) in seismic interpretation.Picking the first arrival times of shot gathers is a time-consuming but important procedure in seismic data processing. The first part of my dissertation (Chapter 2) uses deep learning algorithms to pick the first arrival times of shot gathers. First, the first …
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Impacts of short-time scale water column variability on broadband high-frequency acoustic wave propagation
… and vertical stratification over variable time scales. The impacts of short-time scale water column variability on acoustic wave propagation include coherent and incoherent surface reflections, wavefront arrival time delay, focusing or defocusing of the intensity of acoustic beams and …
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Charge Collection Studies on Integrated Circuit Test Structures using Heavy-Ion Microbeams and MEDICI Simulation Calculations
… Laboratories. A new technique, Diffusion Time Resolved IBICC, is first proposed in this work to measure the average arrival time of the diffused charge, which can be related to the first moment (or the average time) of the arrival carrier density at the junction. A 2D device simulation …
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Low-Power High-Performance Dynamic Circuit Design for Ultra-Deep Submicron Technology
… due to gate-to-source voltage and input arrival time difference.
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Asymptotic Behavior of Finite-Time Ruin Probability in a By-Claim Risk Model with Constant Interest Rate
… We assume that the claim size and the inter-arrival time satisfy a certain dependent structure with some additional assumptions on their distribution functions. Furthermore, we give relevant preparation of theory and compare several existing risk models and dependent structures. In this way, …
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Seismological structure of the Carpathian-Pannonian region of central Europe
… tomographic inversion of P and S-wave relative arrival-time residuals from teleseismic earthquakes, reveal the velocity structure of the mantle to a depth of 850 km throughout the Carpathian-Pannonian region. The tomographic models reduce the P-wave rms residual by 71% from 0.446 s to 0.130 s, …
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