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 17 of 17 for “"Spectral Matching"”.
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Spectral Matching of Musical Instrument Tones
… a particular tone. Previous FM and wavetable matching methods have used trial-and-error or computationally expensive techniques in matching sounds.
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Algorithm for Spectral Matching of Earthquake Ground Motions using Wavelets and Broyden Updating
This study focuses on creating a spectral matching algorithm that modifies the real strong ground motions in the time domain by adding wavelets adjustment to the acceleration time series. The spectral matching procedure is at its core a nonlinear problem, thus a nonlinear solving method was …
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Computational Analysis of LC-MS/MS Data for Metabolite Identification
… the putative identifications. Third, an MS/MS spectral matching algorithm is proposed based on support vector machine classification. The approach provides an improved retrieval performance in spectral matching, especially in the presence of data heterogeneity due to different instruments or …
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Assessing The Biophysical Naturalness Of Grassland In Eastern North Dakota With Hyperspectral Imagery
… areas dominated by introduced grasses using hyperspectral imagery.</p> <p>Hyperspectral imageries from the Hyperion sensor on EO-1 were acquired in late spring and late summer on 2009 and 2010. Field spectra for widely distributed species as well as smooth brome grass and Kentucky blue grass were …
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Improving the Performance and Precision of Bioinformatics Algorithms
… Match) is a hidden Markov model approach to spectral matching, in which many examples of a peptide fragmentation spectrum are summarized in a generative probabilistic model that captures the consensus and variation of each peak's intensity. Experimental results show that HMMatch can identify …
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Analyzing geological materials under martian conditions using laser-induced breakdown spectroscopy : plasma fundamentals, sample classification, and trace element quanitification
… of distance, sample classification based on a spectral matching technique called Partial Least Square-Discriminant Analysis, and the quantification of several trace elements (Li, Rb, Sr, and Rb) using ChemCam spectra. Trace element abundances and implications for geological processes on Mars …
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Earth observation technologies for improved agricultural decision support systems in South Africa
… integrating unsupervised learning techniques and spectral matching algorithms, enabling accurate identification (OA = 0.84, p-value = 0.01) of major crop species across South Africa’s diverse agricultural landscapes. Additionally, the study employed multi-temporal MODIS satellite imagery to …
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Optimization of capillary GC/FTIR for complex sample analysis
… identify eluting components by infrared spectral matching to quality vapor phase library file spectra. Gas chromatography-mass spectrometry (GC-MS) data are also included for the same jet fuel samples to directly compare extent of information provided and relative spectroscopic …
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One-dimensional site response analyses in potentially liquefiable soil profiles
… compares validated soil profile subject to spectrally-matched pulse and non-pulse motions, emphasizing the inclusion of pulse motions with distinctive characteristics in ground motion suites for non-linear dynamic analysis. However, spectral matching may lead to undesired alterations in …
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Abiotic and Biotic Polymer Degradation to Inform Sustainable Design
… mobile phase pH, fragmentation analysis, and spectral matching) were essential to improve structure elucidation and determine acid-base properties (pKa) and hydrophobicity (logKow and logD). The experimental findings emphasized large deviations of oligomers hydrophobicity from computational …
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Developing next generation, non-toxic, inorganic materials for photovoltaics and thin-film transistors
… power conversion efficiency. Owing to improved spectral matching with indoor light spectra, BiOI devices improve in efficiency to 4.37% under 1000 lux white light emitting diode indoor illumination, and millimetre-area BiOI devices are sufficient to power novel carbon nanotube inverters. The …
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Influence of insertion/donning instruction on frequency-specific sound attenuation achieved with ear canal caps and earmuffs with implications for industrial noise application
… may differ. The example of HPD-machinery noise matching illustrates that the attenuation/spectral matching procedure may indeed be a feasible way of selecting optimal protection for workers.
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Algorithms for spectral and spatio-spectral feature selection and classification for tunable sensors : theory and application
… and test new customized algorithms for infrared spectral imaging and remote sensing of terrestrial features and objects, with particular focus on a general class of sensors with noisy and overlapping spectral bands. While the principal driver of this dissertation is the bias-tunable …
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Application of Wavelet Transform to Endurance Time Analysis Method for Performance-based Seismic Design
… real earthquakes. Instead of using scaling and spectral matching of real earthquakes, artificial earthquakes capable of mimicking both the physical conditions and qualities of real earthquakes should be generated for use in seismic analysis and design.</p> <p>The dynamic response of a system is …
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Rational Procedure for Damage Based Serviceability Design of Steel Buildings Under Wind Loads and a Simple Linear Response History Procedure for Building Codes
… and scaling of ground motions, the use of spectral matched ground motions, design for dependent actions, and the scaling of responses with the response modification coefficient (R) and the deflection amplification factor (Cd).
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Optical and electrical characterization of high-concentration photovoltaic systems = Caracterización óptica y eléctrica de sistemas fotovoltaicos de alta concentración
… simulator presented is classified as Class A(spectral match to AM1.5D)-B(spatial uniformity of the irradiance)-A(temporal stability). Procedures for a meaningful use of the solar simulator were then developed. A discussion on appropriate light sensors for irradiance and spectrum is presented. …