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 20 for “"Methods: Statistical"”.
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An Evaluation of Mold in Public Schools in the City of Richmond, VA
… Documentation was done for the sampling methods. Statistical analysis was run on the data received. Tables of results were made, discussions done and conclusions drawn from the laboratory results.The null hypothesis for this study is that "Total inside mold counts are not elevated above …
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Multidimensional Spatial Characterization of Plant Invasions in 'El Pinacate y Gran Desierto de Altar' Biosphere Reserve
… geographic information systems, field methods, statistical analysis, and remote sensing modeling at multiple spatial and temporal scales to predict and test the current and potential distribution of the invasives over dynamic landscapes.Predicted probability of invasion was influenced …
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African Caribbean educational experiences in Preston: A case study
… the use of both quantitative and qualitative methods. Statistical Package for Social Sciences (SPSS) is used to analyse the survey data while Nvivo is used to analyse the interviews conducted. Both packages yielded significant results. The research concludes that while racism remains a …
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Deep Learning for Code Generation using Snippet Level Parallel Data
… interest in the application of deep learning methods for software engineering tasks has surged. A variety of different approaches like transformer based methods, statistical machine translation models, models inspired from natural language settings have been proposed and shown to be effective …
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Short term load forecasting based on hybrid artificial neural networks and particle swarm optimisation
… error is minimised. There are various methods that are used for short term load forecasting, namely; statistical methods and computational intelligence methods. Statistical methods are known as the regression methods which forecast the future electrical load based on historic time …
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The HI Lyman-alpha opacity at redshift 2.7 < z < 3.6
Most of the baryonic matter in the Universe resides in a diffuse gaseous phase in-between galaxies consisting mostly of hydrogen and helium. This intergalactic medium (IGM) is distributed in large-scale filaments as part of the overall cosmic web. The luminous extragalactic objects that we can …
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Star-forming Galaxies and Quenched Systems throughout Cosmic Time
This thesis delves into the investigation of star-forming galaxies and quenched systems at high redshifts, exploring their evolution and properties throughout cosmic time. Firstly, I utilise the foreground lensing of massive galaxy clusters in the Hubble Frontier Fields to probe the high-redshift …
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Heart Rate Variability analysis in patients undergoing local anesthesia
… data base. After the validation stage these methods were then used to analyse the data from the locally anaesthetised patients. The ECG R-wave peak detection was carried out using the wavelet transform with first derivative of Gaussian smoothing function as the mother wavelet. The algorithm …
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Improving the Capability of Preliminary Aircraft Design Methodology by Incorporating Numerical Methods into Segments of a Proven Statistical Method
… identify any potential limitations of Roskam’s statistical aircraft flight performance estimation method, and to provide processes capable of improving those limitations. This project was conducted in collaboration with Diamond Aircraft Industries, and as any other general aviation manufacturer …
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Decision value of confidence intervals versus significance testing in surgical research: a mixed methods study
The misuse and misinterpretations of statistical analyses in medical research have been discussed for several decades and many authors have suggested this has led to poor clinical decision-making. Significance testing, the conventional statistical approach in medical research, has been suggested to …
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Ecological Factors Influencing Infection Rates of the Birch Polypore Inonotus obliquus in the Laurentian Mixed Forest Province
… infection rates tend to be anecdotal or lack statistical rigor to guide new research and provide management guidelines ensuring sustainable harvest. Here I determine factors influencing conk formation at tree level by constructing a generalized linear mixed-effects model to predict host …
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Seepage monitoring and diagnosis of distresses in an earth embankment dam using probability methods
… stages. A number of investigation and monitoring methods exist for the detection of seepage, with varying degrees of technological and implementation complexity. This research, focuses on the Electrical Resistivity Monitoring Method (ERM), and develops a condition assessment process that allows 1) …
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Failure to Reject the p-value is Not the Same as Accepting it: The Development, Validation, and Administration of the KPVMI Instrument
The purpose of this study was to investigate on a national scale the baseline level of p-value fluency of future researchers (i.e., doctoral students). To that end, two research questions were investigated. The first research question, Can a sufficiently reliable and valid measure of p-value …
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Hidden states, hidden structures: Bayesian learning in time series models
This thesis presents methods for the inference of system state and the learning of model structure for a number of hidden-state time series models, within a Bayesian probabilistic framework. Motivating examples are taken from application areas including finance, physical object tracking and audio …
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Multilevel Monte Carlo simulation of soft matter using coarse-grained models
… in length-scales between an atomistic, statistical mechanical model of the material and its mesoscopic structures. To facilitate simulations in such situations, one often relies on a coarse-grained description that integrates out microscopic degrees of freedom, yielding a model that is …
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Identifizierung und Charakterisierung entwicklungsabhängig hochregulierter Gene im Innenohr der Ratte
Durch die außergewöhnlichen Sinnesleistungen benötigt das Säugetiergehör eine Vielzahl spezifischer Proteine. Bislang ist nur ein Teil dieser Proteine bekannt und in ihrer Funktion für das Innenohr beschrieben worden. <br>In dieser Arbeit wurden Gene identifiziert, die während der postnatalen …
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Variational Inference in Dynamical Systems
… not yet observed in our data. The framework of statistical inference gives us the tools to do so, yet, for many systems of interest, performing inference exactly is not computationally or analytically tractable. The contribution of this thesis, then, is twofold: first, we uncover two sources of …
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Collective dynamics in lattice models far from equilibrium
In this thesis, we explore the large-scale collective dynamics of lattice models that are far from equilibrium due to disorder, external driving, metastability and activity. First, we investigate the non-equilibrium behaviour of the three-dimensional random field Ising model at finite temperature, …
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Statistical Inference and the Sum of Squares Method
Statistical inference on high-dimensional and noisy data is a central concern of modern computer science. Often, the main challenges are inherently computational: the problems are well understood from a purely statistical perspective, but key statistical primitives -- likelihood ratios, …
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Polynomial methods in statistical inference: Theory and practice
… In this dissertation, we apply the polynomial methods to several statistical questions with rich history and wide applications. The goal is to understand the fundamental limits of the problems in the large domain regime, and to design sample optimal and time efficient algorithms with provable …