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 “"Extraction methods."”.
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Evaluating Term Extraction Methods for Domain Analysis
This study compared the vocabularies created by various domain experts and the source documents selected by them to create the vocabulary. The results indicate that there is similarity among the vocabularies created and the source documents selected. Also, the relationship between the overlap …
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Segmentation and Feature Extraction Methods for Ocular Modalities
… vascular pattern enhancement techniques, feature extraction methodologies and feature enhancement methods for CV recognition. We introduce a new sclera segmentation algorithm using morphological properties of human eye in visible spectrum. This study demonstrates the effective use of the …
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Evaluation of TIN extraction methods for various terrain textures
… terrain analyses. In particular 1 compare TIN extraction methods. A TIN extraction method is a method in which points are selected from a raster Digital Elevation Model (DEM) in order to construct a TIN. Evaluations of TIN extraction methods have been performed in the past. However, none have …
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Microplastics in saltmarshes: developing extraction methods and examining past accumulation
… The aim of this study is to develop a suitable extraction methodology to investigate temporal trends in the concentration and type of microplastic pollution in saltmarsh sediments, from the mid-20th century to the present day. Two cores were taken from a radionuclide-dated saltmarsh in NW …
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GNSS pre-correlation waveform feature extraction methods for multipath-afflicted signal classification
… amplified or attenuated. Different feature extraction methods were studied and assessed according to their suitability to characterize multipath-contaminated waveforms. Namely, the methods of Generalized Hurst Exponent, Detrended Fluctuation Analysis, Correlation Dimension, Fuzzy Entropy and …
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Extraction methods for multidirectional driving point accelerance and transfer point accelerance matrices
… of numerical-experimental hybrid measurement methods are proposed and evaluated for finding the multidirectional driving point and transfer point accelerance matrices in both 2D and 3D. These methods are tested for their robustness under conditions of noisy data. A 2D implementation, called a …
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Sample Collection and DNA Extraction Methods for Environmental DNA Metabarcoding in Headwater Streams
… and is also known as environmental-DNA (eDNA). Methods optimized for specific environments may be able supplement insight to local taxa richness. With the advent of high throughput sequencing and the proliferation of sequence data in public repositories, insights to the biodiversity of …
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Profiling studies of five Namibian indigenous seed oils obtained using three different extraction methods
… quality characteristics among three different extraction techniques, namely the traditional extraction method, machine-operated cold pressing and Soxhlet extraction. The oils studied were Citrullus lanatus (Kalahari melon) oil, Schinziophyton rautanenii (Schinz) Radcl.-Sm. (Manketti) nut oil, …
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New Covariance-Based Feature Extraction Methods for Classification and Prediction of High-Dimensional Data
… sets, it is often necessary to implement feature extraction methods in order to capture relevant discriminating information useful for the purposes of classification and prediction. The relevant information can typically be represented in lower-dimensional feature spaces, and a widely used …
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Comparing Extraction Methods in Sample Preparation for the Quantification of Cannabinoids in Industrial Hemp
… Farm Bill does not, however, specify standard methods for sample preparation or quantification of cannabinoids (including THC) in Cannabis. Extraction efficiency of phytochemicals is well-known to depend on the solvent and extraction method used. In this project, we evaluated the effect of …
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Are Mussel Shells Environmental DNA Time Capsules? A Comparison Of Extraction Methods For Obtaining DNA From Shell Material.
… prompted a study to test the ability of several extraction methods to isolate DNA from museum mussel specimens. The purpose of this study was to determine if four DNA extraction methods had influence on total DNA yield (ng/mg) from mussel tissue. The hinge ligaments of freshwater mussels ranging …
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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
… the suitability of simplified bioaccessibility extraction test (SBET) and the stomach phase of unified bioaccessibility method (UBMSG) to measure bioaccessible PTE in PM10 collected on filter dynamic measurement system (FDMS) filters used worldwide. Analytes were As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, …
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Production of high quality soybean oil and meal: Studies on extraction methods, processing steps, deep-fat frying and optimization of extrusion aided screw pressing
… of this research were to evaluate the effects of extraction methods, processing steps, frying time and optimization of extrusion aided screw pressing on the quality of soybean oil and meal. The Crude soybean oil was obtained by commercial hexane solvent extraction (SE), or extrusion aided screw …
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Accurate and Robust Localization of Duplicated Region in Copy-Move Image Forgery
… types of the forgeries and possible detection methods. Region duplication is an efficient operation to create image manipulation. In this type of tampering a region in an image is copied and moved onto a different area of the same image. Post processing approaches, such as possible geometrical …
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N-ary Cross-sentence Relation Extraction: From Supervised to Unsupervised Learning
Relation extraction is the problem of extracting relations between entities described in the text. Relations identify a common "fact" described by distinct entities. Conventional relation extraction approaches focus on supervised binary intra-sentence relations, where the assumption is relations …
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A methodological investigation into the roots of the resurrection plant, Xerophyta viscosa, for further proteomic analyses
… to various proteomic techniques. Three protein extraction methods were investigated, of which one method, was the most suited in isolating total protein from the root tissues of X. viscosa.
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Predicting Maize Yield, Nutrient Concentration and Uptake in P and K Fertilized Soils: Pressurized Hot Water and Other Alternatives to Mehlich I Extraction in Guatemala Soils
… with minimal validation. For example, Mehlich-I extraction of phosphorus (P) currently used extensively in Guatemala may not be suitable for its broad range of soils. At least four alternatives are available but are relatively untested [Bray 1, Mehlich III, Olsen and pressurized hot water (PHW)]. …
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Automated Detection of Maternal Vascular Malperfusion Lesions in Human Placentas Diagnosed with Preeclampsia and Fetal Growth Restriction Using Machine Learning
… placenta. Current placental clinical pathology methods involve a manual visual examination of histology sections, a practice that can be resource-intensive and demonstrate moderate-to-poor inter-pathologist agreement on diagnostic outcomes, dependant on the degree of pathologist sub-specialty …
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