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 110 for “"Single-pass"”.
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Online clustering with single-pass topology based fuzzy clustering algorithm
… computational efficiency. An unsupervised one-pass clustering method that efficiently adapts to data distribution and evaluation is proposed. This method, Topology-Based Fuzzy Clustering (TFC), uses the topology of data to discover clusters. TFC uses the method of Growing Neural Gas (GNG) …
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A single-pass grid-based algorithm for clustering big data on spatial databases
… in memory. This thesis presents a new algorithm, SingleClus, that is performing clustering on a 2-dimensional dataset with a single pass of the dataset. Moreover, it optimizes the amount of disk I/0 operations while making modest use of main memory. Therefore it is theoretically optimal in terms …
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Estimating forest attributes using laser scanning data and dual-band, single-pass interferometric aperture radar to improve forest management
… laser scanning (lidar) data or dual-band, single-pass interferometric synthetic aperture radar data (from GeoSAR) alone or both in combination (Chapter 4). In situ measurements of LAI, mean height, height to live crown, and stem density were made on 109 (LAI) or 110 plots (all other …
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On the power of nondeterminism in small two-way finite automata
… of 1NFAs. We prove that the most natural single-pass 2DFA algorithm for deciding B fails, "single-pass" meaning that the automaton is bound to terminate as soon as it reaches an endmarker for the first time. On the way, we introduce the notion of dilemmas as an interesting general tool for …
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On the performance characteristics of multiple pass hydrogen fluoride chemical laser master oscillator/power amplifiers
… as a function of input power, the number of passes through the gain media, location of the optical axis of the input beam and oscillator/amplifier flow field match/mismatch. The amplification ratio is an inverse function of the input power (intensity) and, for maximum amplification, the peak …
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Gaseous Heat Transfer in Cross Flow
… carried out into gas phase heat transfer in a single-pass cross flow heat exchanger supplied by NU-WAY ECLIPSE Ltd., to find reasons whyover design occured when standard correlations were used....
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Implementation and analysis of a bayesian approach to topographic reconstruction with multiple antenna synthetic aperture radar interferometry
… aperture radar (SAR) interferometry is a single-pass interferometry technique for topographic mapping. A Bayesian model-base approach to topographic recontruction with multiple-antenna SAR interferomety, proposed by Dr. A. J. Wilkinson, is implemented and analysed in this dissertation.
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A machine learning approach to wind estimation and uncertainty using remote dropsondes and deterministic forecasts
… altitude, unguided airdrops without making two passes over a drop zone (DZ). During conventional high altitude drops, aircrews fly over a DZ, release a dropsonde, compute a payload release point, loop back to the DZ, and release a payload. This work proposes a machine learning method that …
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A Parameterized Approach to Partitioning Between Focused and Diffuse Heat Output and Modeling Hydrothermal Recharge at The East Pacific Rise 9°50´N
… thesis. To address these issues, I first use a single-pass modeling approach using a variety of observational data in a simple parametric scale analysis of a hydrothermal vent field to determine fundamental parameters associated with the circulation and magmatic heat transfer for a number of …
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Energy-Efficient Real-Time Hardware Acceleration for Gaussian Fitting
… involving Gaussian Mixture Models (GMMs), Single-Pass Gaussian Fitting (SPGF) algorithm, allowed for real-time 3D mapping with minimal memory and energy requirements due to its single-pass processing of input data. To further decrease demonstrated energy results, we propose the design of an …
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Multiple transducer synthetic aperture sonar interferometry for emulating SAR interferometry
Multiple transducer single-pass synthetic aperture sonar interferometry in air is a technique that can emulate topographic mapping techniques that have not been implemented using radar or that are relatively expensive and difficult to obtain in practice for the radar engineer who wishes to test …
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Extraction methods for assessing the bioaccessibility of potentially toxic elements in urban airborne particulate matter by inductively coupled plasma mass spectrometry
… 14.5 μg L-1, respectively.New closed-loop and single-pass dynamic models for the SBET and UBMSG either coupled or not with ICP-MS were successfully applied to determine bioaccessible PTE in real and simulated PM10 samples. Accuracy of models was ascertained by mass balance, and verified by …
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In-situ photocatalytic remediation of organic contaminants in groundwater
… by a hydraulic performance study, which encompasses single and double pass flow studies. The single pass flow study involves the photocatalytic oxidation (PCO) of MB and MTBE, while the double pass flow study was focused on the PCO of MTBE only. The double pass can simulate two serially …
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Reliability diagnostic strategies for series systems under imperfect testing
… and type II error probabilities are included and single-pass sample paths are required. The model accounts for the expected costs of testing components, false positive termination, and no-defect-found outcomes. Based on the model, a heuristic was developed to construct the cost minimizing testing …
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The comparative ecology of highrate plastic, conventional mineral and mixed plastic mineral media in the treatment of domestic sewage in percolating filters.
… ascertain whether the loading to a conventional single pass filter could be increased by replacing the surface layer of mineral medium with a 750mm layer of random plastic medium, which has greater surface area and voidage. This would allow greater film accumulation and subsequent removal of …
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Evaluation of Brook Trout (Salvelinus fontinalis) Introductions and Re-introductions Into Four Virginia Blue Ridge Mountain Streams
… Hollow and Sweet Run were new introductions. Single pass electrofishing (EF) surveys were conducted with a backpack electrofisher five times during the study. Selected trout > 70 mm but < 100 mm and all trout > 100 mm received a Biomark® 134.2 kHz passive integrated transponder (PIT) tag to …
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Affinity Maturation of the D1.3 Antibody Using Yeast Surface Display and Flow Cytometry
… sorted YSD with the D1.3/M3 antibodies, a single-pass enrichment factor of 125-fold (+/-65-fold) was achieved, indicating excellent differentiation between clones of only slightly different affinity. Optimal equilibrium affinity screening of a randomly mutated D1.3 library was performed …
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Design and utilization of chiral selectors for enantioselective membrane transport
… purities exceeding 95% have been obtained in a single pass through the system. For data collection, sample sizes were limited to gram quantities of racemate. However, it is clear that the present system could be used to resolve larger samples and that the continuous (as opposed to batch) process …
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Optimizations to a massively parallel database and support of a shared scan architecture
… to share processing of many queries in a single pass through the data ("shared scans"). Our experiments exhibit orders of magnitude improvement in query throughput for both, skewed and non-skewed workloads, for shared scans as opposed to serial execution.
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Wastewater Disinfection with HYDROFLOW Technology
… a hydraulic detention time of 10 minutes and a single pass through the HydroFLOW unit, the E. coli removal efficiency was negligible. Further research is needed to determine the most economical and efficient reactor configuration in order to make the HydroFLOW unit competitive with conventional …
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