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 19 of 19 for “"Hierarchical clustering analysis"”.
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A Colorimetric Sensor Array for Aqueous Analyses
… analyses, including principal component analysis (PCA) and hierarchical clustering analysis (HCA) were used to analyze the digital databases. This technique has also been successfully applied to the analyses of complex mixtures; various commercial beverages, including sodas, beers and …
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The SUN Action database : collecting and analyzing typical actions for visual scene types
… to have lower overall diversity of responses. A hierarchical clustering analysis reveals a heterogeneous clustering structure, with some categories readily grouping together, and other categories remaining apart even at coarse clustering levels. Finally, two simple classifiers are introduced for …
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Proteomics Study of Pre-Harvest Sprouting in Wheat
… cutting-edge technology called iTRAQ. Proteomic analysis revealed that 190 differentially expressed proteins might be involved in various cellular functions, such as carbohydrate metabolism, nitrogen metabolism, stress response, redox regulation, ATP synthesis, and protein translation, during …
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A Survey on the Microscopical and Chemical Analysis of Synthetic Wig Fibers
… residue was achieved using principal component analysis (PCA) coupled with hierarchical clustering analysis (HCA). Thin-layer chromatography (TLC) indicated there is a wider range of complex dyes that are applied than previously expected.
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Geospatial Modeling of Forest Road Networks and Their Effect on Stream Macroinvertebrate Communities
… and stream reaches. Results of a quadrant analysis and hierarchical clustering analysis showed hypothesized trends for several metrics in Idaho, though the trends were not strong. No trends were observed in Oregon. The variability in results is likely due to limitations of the input …
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The relationship between reported incidents of student discipline and student achievement across four Eastern states
… and Virginia. For the purpose of this study, a hierarchical clustering analysis was used to create five clusters of school divisions (N=1,108) within the four states according to similiarities. To accomplish this task, a data matrix was created, which contains data of the total number of …
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Profiling and putative aroma biomarker identification for flavor in potatoes using a trained sensory panel and HS-SPME GC-MS
… clones (Solanum tuberosum, L.) using sensory analysis paired to aroma compound analysis reveals potential biomarkers for flavor phenotyping. Trained sensory panelists described extensive, significant sensory differences between potatoes including bitter, buttery, creamy, earthy, fruity, …
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DATA-DRIVEN ANALYTICAL MODELS FOR IDENTIFICATION AND PREDICTION OF OPPORTUNITIES AND THREATS
… (DTW), to learn similarity between sequences and Hierarchical Clustering Analysis (HCA), is used to determine which features are relevant for a given prediction problem; and finally, an automated decision based on the input and structured learning from the DTW-HCA is used to build a training …
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The Investigation of Targets for Therapy in Brain Tumours
… history of the patients were analysed using hierarchical clustering analysis (HCA) and principal component analysis (PCA) employing multivariate statistics. Two distinct clusters of samples were found, which separated by the expression of PTEN and PDGFR-a in cluster 1 and predominately …
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Oxidative Phosphorylation: A Critical Feature and Novel Therapeutic Target In Melanoma Brain Metastases
… recently showed via RNA-sequencing (RNA-seq) analysis of clinical samples that melanoma brain metastases (MBMs) have higher expression of oxidative phosphorylation (OXPHOS) genes (including <em>PPARGC1A</em> or <em>PGC1α</em>) than patient-matched extracranial metastases (ECMs). <strong>Thus, …
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RETROSPECTIVE DESCRIPTIVE STUDY ON POST-MARKET MEDICINE QUALITY-RELATED COMPLAINTS AND THE APPLICATION OF FIELD-BASED DETECTION OF POORQUALITY MEDICINES USING NEAR-INFRARED AND RAMAN SPECTROSCOPIC SCREENING METHODS
… handheld spectroscopy with chemometric analysis for rapid detection of substandard medicines using Kenya as a case study. The methodology employed a mixed approach, a literature review, retrospective analysis of pharmacovigilance data (2014-2021), and laboratory analysis of field …
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Proteomic analysis of genetically stratified grade-I meningioma
… digestion and sample preparation for LCMS analysis. Raw mass spectrometry data files were analysed using MaxQuant (1.6.2.10) and Perseus software (1.6.1.3). Quantitative phosphoproteomics was performed using TMT 10plex labelling approach followed by kinase prediction using KinswingR. GO …
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Investigation of chicken embryo metabolism and substrate utilization during later development
… size on embryo metabolism. Principal component analysis of liver and blood metabolites showed separate clusters on both e14 and e20 from 32 and 51 wk-old hens. The separate clusters featured branched-chain amino acid, glycine, serine and threonine metabolism. Clear separation of metabolites was …
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Understanding the socio-economic contributions of different wildlife ranching business models in South Africa
… in response to a large-scale threat. Through a hierarchical clustering analysis of revenue-generating activities, six business models within the wildlife ranching sector were delineated according to their primary focus: ecotourism, trophy hunting, mixed hunting (i.e., biltong and trophy), mixed …
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Implementation of global miRNA biomarker discovery in human plasma
… on MiSeq or NextSeq Illumina systems. Data analysis was performed using both commercial (e.g. CLC Genomics Workbench, Qiagen) and publicly (e.g. STAR aligner and HTSeq) available tools for fastq processing, alignment to reference genome and quantification of miRNAs. A number of packages were …
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Gene expression profiling of patients with Polycythaemia Rubra Vera using cDNA microarrays
… order to obtain a model system for physiological analysis of the PRV-1 protein, transgenic mouse strains were generated which express the human and the murine PRV-1 gene in their haematopoietic system. Expression of the transgene was demonstrated on mRNA as well as on protein level in the two …
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Materials science approach to characterization and prediction of sensory texture in confectionary systems
… with 12 commercial caramel popcorn samples. Hierarchical clustering analysis of the Napping-UFP data set for global, aroma-by-mouth, texture, and taste attributes resulted in the identification of 3 categories of caramel coatings: Small-scale Dark (SD), Large-scale Dark (LD), and Large-scale …
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Peripheral inflammatory and regulatory immune changes in HIV positive to HIV positive renal transplant recipients
… a Paired T-test/Wilcoxon Signed Rank Test. A hierarchical clustering analysis (HCA) was used to identify groups of analytes for which fold change may have been significantly influenced by age, sex, baseline CD4 count at transplantation (TP), number of HLA matches, or time. A mixed effect …