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 “"time-sequential"”.
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Design of sampling and interpolation systems with applications to medical imaging
… this dissertation. The first investigation is of time-sequential sampling. A novel theory of time-sequential sampling is developed which links time-sequential sampling with generalized multidimensional sampling. This theory includes conditions for time-sequential patterns, temporal uniformity, and …
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Towards a unified treatment of 3D display using partially coherent light
… form of 3D display, implemented with multiple time-sequential diffracting screens. The mode-selection algorithm determines an optimal set of diffracting screens to display within the flicker-fusion rate of a viewer's eye. It is demonstrated both through simulation and experiment that this …
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The Study of Serial Histochemical Changes in Laser-related Post-inflammatory Hyperpigmentation
… factors are regulated by laser surgery, time-sequential immunohistochemical studies were performed with Q-switched alexandrite laser (QSL)-irradiated skin of four healthy subjects. Skin biopsies were performed at baseline first and then immediately, 2, 7 and 21 or 28 days after the …
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Sequential, Simultaneous and Optimal Approaches to Segmentation: Theory and Application
… variables should be fed in groups of a few at a time (sequential process) or all at one time (simultaneous process) has not been sufficiently examined.
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The morphology of the Kakumbi concave bank bench on Luangwa river
… is mapped and traced from topographical maps and time sequential aerial photographs between 1956 and 1982. The physical character of the bench is also determined from the analysis of particle sizes of sediment samples collected in the field.The results of the analysis show that the bench consists …
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Resilient Navigation through Jamming Detection and Measurement Error Modeling
… and augment GPS for a more resilient PNT. Time-sequential estimation improves navigation accuracy and allows for the augmentation of GNSS with other difficult-to-interfere sensors. Safety-critical navigation applications (e.g., GNSS/INS-based aircraft localization) that use time-sequential …
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Towards a poly-phon-ic environment
… within the piece that relate to various time lengths and musical instruments when particular musical motives, specifically melodic lines, play against one another. An interdependent relationship between the lines, a vertical association, is referred as harmony, while an interdependent …
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Distribution System Reliability Evaluation Using Both Analytical And Simulation Approaches
… thesis also illustrates the application of the time sequential Monte Carlo simulation technique to complex radial distribution system reliability evaluation. A simulation procedure is illustrated and a computer program has been developed using the simulation approach to evaluate both the average …
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State space modelling of extreme values with particle filters
… their distribution can change gradually over time. Sequential Monte Carlo methods known as particle filters provide an approach to inference for such models whereby observations are added to the fit sequentially. Though originally developed for on-line inference, particle filters, along with …
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The perceived urgency and detection time of multi-tone and frequency-modulated warning signals in broadband noise
… which affect the perceived urgency and detection time of auditory warning signals. These elements included pulse format (multitone sequential, multitone simultaneous, and rising sawtooth frequency-modulated pulse formats), pulse level (65 dBC and 79 dBC), and time between pulses (0 ms, 150 ms, and …
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A sequential evaluation of left ventricular function in asymptomatic and symptomatic patients with chronic severe aortic regurgitation
… conditions. This study was a prospective, sequential evaluation of left ventricular function using both non-invasive and invasive techniques in symptomatic and asymptomatic patients with isolated chronic, severe (4+) AR at cardiac catheterisation. The aims of the study were to (I) Identify …
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Next Generation Computer Controlled Optical Surfacing
… The CCOS process is optimized to vary the dwell time of the tool on the workpiece according to the desired removal and the calibrated tool influence function (TIF), which is the shape of the wear function by the tool. This study investigates four major topics to improve current CCOS processes, …
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Postmarket sequential database surveillance of medical products
… with regard to the Sentinel System's novel sequential database surveillance capabilities. Sequential database surveillance is a "near real-time" sequential statistical method to evaluate pre-specified exposure-outcome pairs. A "signal" is detected when the data suggest an excess risk that is …
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Real-Time Machine Learning for Quickest Detection
… Cyber-Physical Systems (CPS) require real-time machine learning for control and decision making. One promising solution is to use deep learning to discover useful patterns for event detection from heterogeneous data. However, deep learning algorithms encounter challenges in CPS with …
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Particle Filtering for Stochastic Control and Global Optimization
… provides an ideal paradigm to model discrete-time sequential decision making under uncertainty and partial observation. However, POMDPs usually do not admit analytical solutions, and are computationally very expensive to solve most of the time. While many efficient numerical algorithms have …
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Ranging-Image-Based Methodologies to Enhance LiDAR Processing Efficiency
… is a paramount factor to be considered. In real-time applications, reduced computational requirements enable the deployment of cost-effective hardware solutions, facilitating broader system implementation across transportation networks while maintaining operational reliability. For offline …
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HTS Magnets: Modelling, Charging and Large Scale Applications
… The management algorithm is tested using a time-sequential Monte Carlo analysis that not only shows the optimality of the proposed algorithm but also demonstrates the placement of HTS energy storage. Despite the low capacity factor and high capital cost, HTS energy storage is key in …
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Distortion-optimal parallel MRI with sparse sampling: from adaptive spatio-temporal acquisition to self-calibrating reconstruction
… support. We develop a highly-accelerated real-time dynamic MRI technique, dubbed PARADISE, which incorporates a physiologically-driven sparse support model in the joint spatial domain and temporal frequency dimension. The imaging scheme gains its acceleration from: (i) sparsity of the support …