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 35 for “"Sequential sampling"”.
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An ARM-based sequential sampling oscilloscope
Sequential equivalent-time sampling allows a system to acquire repetitious waveforms with frequencies beyond the Nyquist rate. This thesis documents the prototype of a digital ARM-based sequential sampling oscilloscope with peripheral hardware and software. Discussed are the designs and obstacles …
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Sequential Sampling Designs for Estimating Software Reliability
… during testing is a shortcoming of a fixed sampling scheme. We applied sequential sampling schemes to make allocation decisions dynamically throughout the testing process. Under these sampling schemes, we can refine the allocation of test cases sequentially based on the information gained as …
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Hybrid adaptive sequential sampling for reliability-based design optimization
… In this thesis, a new hybrid adaptive sequential sampling strategy has been developed to substantially improve the efficiency of the surrogate model development process. The developed sampling strategy combines local sampling that focuses on regional model fidelity improvements with …
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GLR Control Charts for Process Monitoring with Sequential Sampling
… is to investigate GLR control charts based on a sequential sampling scheme (SS GLR charts). Phase II monitoring is considered and the goal is to quickly detect a wide range of changes in the univariate normal process mean parameter and/or the variance parameter. The performance of the SS GLR …
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Adaptive sequential sampling for extreme event statistics in ship design
… to irregular waves and coupled it with a sequential sampling algorithm which allows the accurate results to be determined for meager computational cost. This thesis discusses the results of applying this approach directly to ship motions and loading conditions using a modified version of …
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Sequential sampling and analysis of precipitation in the Shenandoah Valley
… establishment and operation of a developmental sequential rain sampler in the Shenandoah Valley. It also reports the results obtained from the rainwater analysis precipitation at and this the determination rural site is of whether the acidic or not. Rainwater collection was conducted …
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Uses of the Hypergeometric Distribution for Determining Survival or Complete Representation of Subpopulations in Sequential Sampling
… we apply the hypergeometric distribution to sequential sampling in order to determine a surviving subcategory as well as study the problem of and complete representation of the subcategories within the population.</p>
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Design of sampling and interpolation systems with applications to medical imaging
… aspects concerning the theory and design of sampling and interpolation systems are investigated in 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 …
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Neural Substrates of Human Perceptual Decision-Making
… perceptual decision-making can be explained by sequential sampling models, which assume that we make decisions by accumulating sensory evidence over time until a decision threshold is reached and the response is executed. Although these models are designed to explain behavioural data, the …
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Process Monitoring with Multivariate Data:Varying Sample Sizes and Linear Profiles
… is to take samples of fixed size at regular sampling intervals for each variable. In the first part of this dissertation, MEWMA control charts based on sequential sampling schemes with two possible stages are investigated. When sequential sampling with two possible stages is used, …
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First and Second Order Efficiency of Sequential Designs in a Nonlinear Situation with Applications
… so far, namely, designing the experiment sequentially, is appropriate. In this study, the problem of estimating a nonlinear function of the parameters, in particular, the product of finitely many parameters, is investigated and generalized under the umbrella of one-parameter exponential …
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Drift Diffusion Analyses Of Preferential Choice
… options. In a collection of three essays, we use sequential sampling models to formally describe preference accumulation processes underlying various choice problems. The models we propose are based on the drift diffusion model (DDM), which is a benchmark sequential sampling model for studying …
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Development, implementation, and economic evaluation of an integrated pest management program for alfalfa in Virginia
Three sampling methods for estimating abundance of alfalfa weevil (AW) larvae (Hypera postica Gyllenhal) were evaluated for both accuracy and precision. Calibration equations were developed to convert intensity estimates of AW larvae among sampling methods. Greenhouse experiments evaluating the …
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Optimization of Multidimensional Nuclear Magnetic Resonance Spectroscopy, for Resolution and Sensitivity, Through Application of Radial Sampling
… 50 kDa. However, as protein size increases the sampling and sensitivity limited regimes become apparent. As a consequence, the orthogonal linear sampling requirements of conventional multidimensional NMR spectroscopy, combined with increased signal averaging require a longer acquisition time …
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Consistency and Uniform Bounds for Heteroscedastic Simulation Metamodeling and Their Applications
… metamodeling techniques, particularly from the sequential prediction perspective, are lacking. Second, sequential heteroscedastic metamodel-based level-set estimation (LSE) methods are scarce. Third, the increasingly high computational cost required by heteroscedastic Gaussian process-based LSE …
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Sequential Designs with Application in Software Engineering
… testing process. We started with a fully sequential sampling scheme to estimate the reliability of a software system using partition testing. We have shown both theoretically and through simulation that the proposed scheme always performs at least as well as fixed sampling approaches where …
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Towards Rheumatic Heart Disease vaccine development: Defining host immune responses to Group A Streptococcal infection in Cape Town
… responses and, rather, recommends the use of sequential sampling and testing sera against a panel of GAS antigens. Study IV provided evidence-based support for the utility of GAS-shared antigens and M peptides in documenting the characteristics of human immune responses following GAS …
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Somatic Mutation Detection in Leukemia-Derived Circulating DNA: Utility in Monitoring Clonal Dynamics and Disease Response in Pediatric Acute Lymphoblastic Leukemia
… the invasiveness of the BM biopsy hinders the sequential sampling, but also, the currently implied techniques are associated with a lack of sensitivity to detect subclones other than the major diagnostic clone. Somatic mutation detection in circulating-tumor DNA (Ct-DNA) offers a new venue for …
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Copula-Based Zero-Inflated Count Time Series Models
… zero-inflated counts and the errors is studied. Sequential sampling likelihood inference is performed. To evaluate the proposed method, simulated and real-life data examples are provided and studied. For the second class, Markov zero-inflated count time series models based on a joint distribution …
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