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 185 for “"spectral data"”.
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Quantitative spectral data acquisition and analysis with modular smartphone assemblies
… design is optimized for sensitivity and spectral resolution. Calibration techniques are developed to enable robust data collection across different phone models with minimal equipment. Novel algorithms for robust calibration with minimal equipment are described and implemented. The …
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Functional Data Models for Raman Spectral Data and Degradation Analysis
Functional data analysis (FDA) studies data in the form of measurements over a domain as whole entities. Our first focus is on the post-hoc analysis with pairwise and contrast comparisons of the popular functional ANOVA model comparing groups of functional data. Existing contrast tests assume …
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Multi Spectral Data Analysis for Diagnostic Enhancement of Pediatric Spinal Cord Injury
… qualitative analysis of the acquired imaging data. Quantitative analysis of patients with SCI is an important issue in both diagnostic and treatment planning. Hence in this work new multispectral magnetic resonance (MR) image based approaches were developed for high-throughput extraction of …
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GlySpy: A software suite for assigning glycan topologies from sequential mass spectral data
… new approaches are required. GlySpy uses data derived from sequential mass spectrometry (MSn), in which a precursor molecule is fragmented to form products, each of which may then be fragmented further, gradually disassembling the glycan. GlySpy resolves the structures of the original …
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Transform-based quantum potential reconstruction from sparse spectral data: generalized Bertlmann-Martin moment inequalities
… potential V(r) can be reconstructed from limited spectral information under explicit modeling assumptions. This dissertation develops and validates a reproducible, transform-based framework for reconstructing ground-state radial densities rho(r) = |R(r)|^2 and central potentials V(r) from discrete …
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Studies on new approaches of chiral discrimination for chiral analysis by regression modeling of spectral data.
… latent or structured information from the spectral data, which might contain interference and/or redundant information from the reaction matrix. Evaluation of the above approach using a test set of samples gave results with root-mean-square errors (RMSEs) of 0.0012-0.042. In the second …
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From purification, spectroscopy, and microscopy of carbon dots to synthesis modeling and AI-assisted spectral data extraction
… physical modeling, and AI-assisted data curation. Part A develops and applies rigorous purification and fractionation to disentangle bottom-up products of CD synthesis from confounding small molecules; it then combines ensemble spectroscopy with single-particle fluorescence (Eric …
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Archaeological remote sensing: visualisation and analysis of grass-dominated environments using airborne laser scanning and digital spectral data
The use of airborne remote sensing data for archaeological prospection is not a novel concept, but it is one that has been brought to the forefront of current work in the discipline of landscape archaeology by the increasing availability and application of airborne laser scanning data (ALS). It is …
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Predictive models in near-infrared spectroscopic analysis for blood hemoglobin prediction
… bands typically very broad, leading to complex spectral data makes the NIRS useful for analysis. Different types of predictive models such as linear, nonlinear, and hybrid predictive models were commonly used to predict component of interest from NIRS spectral data. However, different predictive …
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Automatic selection of optimal window size and shape for texture analysis
… Maximum Likelihood classification scheme against spectral data and texture from fixed-size windows to determine if there were any improvements in classification accuracy. Three different types and scales of data, including SPOT, SIR-C, and ADAR, were used to test the robustness of this …
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Infrared investigation of some octahedral organometalic [sic] carbonyls
Electrochemical and infrared spectral data for a number of octahedral systems of the type LM(CO)₅ (M=Cr, Mo) and W; L=pyridine and quinoline), L₂M(CO)₄ (M=Cr, Mo, and W; L₂ =ethylenediamine, (pyridine)₂, and bipyridyl), (LM(CO)₄)₂ (M=Cr, Mo, and W; L=As(CH₃)₂ and P(CH₃)₂) and (LFe(CO)₃)₂ (L=SCH₃ , …
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Solution Properties of Some Iron and Copper Macrocycles.
… 4-methyl pyridine were determined from visible spectral data, and in dimethyl sulfoxide (DMSO) were obtained from atomic absorption analysis. Kinetic data for the dissociation of FePc in pyridine is reported. Magnetic susceptibilities of FePc in pyridine, 2-methylpyridine, 3-methylpyridine, and …
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DeMeo taxonomy : categorization of asteroids in the near-infrared
… classes based on Principal Component Analysis of spectral data over the visible and near-infrared wavelengths, specifically the 0.45 to 2.45 micron range. Principal Component Analysis was used by both Tholen (1984) and Bus (1999) to create taxonomies on visible data. There is no pre-existing …
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Improving Identification of Area Targets by Integrated Analysis of Hyperspectral Data and Extracted Texture Features
Hyperspectral data were assessed to determine the effect of integrating spectral data and extracted texture features on classification accuracy. Four separate spectral ranges (hundreds of spectral bands total) were used from the VNIR-SWIR portion of the electromagnetic spectrum. Haralick texture …
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Spectral processing and wind estimation with Jicamarca mesospheric radar data
… complex processing on increasingly large sets of data. These advances have allowed for more accurate processing techniques to be applied to more data than was possible in the past. Presented in this thesis is an improved method of spectral processing using least-squares nonlinear curve fitting …
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Modeling and Simulation of Radiation from Electronic Transitions in Hypersonic Atmospheric Reentry Flow
… for certain species of interest. The spectral data required as inputs – electronic transition rates, energies, and wavelengths – for atomic nitrogen, oxygen, and hydrogen are obtained from a database maintained by NIST. Vibrational and rotational transitions of diatomic molecules are …
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Investigation of Closed-Loop Control of Polyatomic Molecules
… Experimental results that are based on mass spectral data, in this thesis includes ionization/fragmentation of DMMP and CH2BrI in strong femtosecond laser fields, coherent control using closed-loop optimization method for bond dissociation in both DMMP and CH2BrI, as well as application of …
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Advancement of fiber image guide based snapshot imaging spectrometer technology for bioimaging and environmental applications
Hyperspectral imaging spectrometers provide detailed and continuous spectral data in addition to spatial information found in commercial RGB or monochromatic cameras. The addition of spectral information can provide valuable insight in many fields such as but not limited to biomedical imaging, …
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Approaches towards C-10-hydroxylated analogues of narciclasine
… intramolecular formation of ring B. Experimental data and spectral data are provided for the novel compounds.
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