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 40 for “"Local structures"”.
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Improve KL -Divergence Language Models in Information Retrieval Using Corpus Local Structures
In summary, this thesis studies KL-divergence from different perspectives and proposes several new models to address the existing problems in KL-divergence language models. It results in more effective retrieval models, which should potentially benefit all retrieval applications.
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Local Structures of Niobium-Containing Cation-Disordered Rocksalt Materials: Cobalt-Free Cathodes for Lithium-Ion Batteries
… with electrochemical cycling to probe the local and long-range structures of these compounds, and their evolution with charge and discharge. The occurrence of short-range cation order in Li1.25Nb0.25Mn0.5O2 is reported and rationalised based on the principle of electroneutrality, combined …
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Think global, act local when estimating a sparse precision matrix
… potentials for small cliques and fuses the local structures to form a sparse yet globally robust model of the entire distribution. Identification of appropriate local structures is done through stochastic discrete optimization. The algorithm is implemented in Matlab and benchmarked against …
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Spatial Organization of Multicellular Living Systems
… structural characteristics emerge from the local organization of neighboring cells. Analogous to classical physics where transformations in the local structure give rise to phases and phase transitions, the changes in local structures in multicellular assemblies can be essential for a …
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Common Techniques in Graceful Tree Labeling with a New Computational Approach
… This approach leverages information about the local structures present in a given tree in order to construct a suitable labeling. It has been shown to work for many small cases and thoughts on how to extend this approach for larger trees are put forth.
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Fingerprinting analysis of non-crystalline pharmaceutical compounds using high energy X-rays and the total scattering pair distribution function
… researchers. However, little is known about local ordering in non-crystalline pharmaceuticals due to the lack of reliable experimental probes, hindering the clinical application of these compounds. The powerful tools of crystallography begin to lose their potency for structures on the …
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Smoothness- transferred random field
… to capture the relationship between neighboring local regions, while data energy for the evidence from local regions. Usually, the smoothness energy is constructed in terms of a fixed set of filters or basis which can be learned from training examples and steered to local structures in test …
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The Kaleidoscopic Unsaid: Voice, Memory, and Body of the Afro-Americas
… the power structure shifts and moves within the local structures, I show how Black subjects constantly navigate a self-representation that is malleable and constantly shifting that both re-inscribes and resists the power schema. In the first chapter I demonstrate how the Autobiografía de un …
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Structural Investigations of Highly Strictive Materials
… sub-micron or nano scale, resulting in diverse local structures and different physical properties. In this work, I have investigated domain and local structures of NBT-x%BT crystals, KNN ceramics and Fe-xat.%Ga alloys under various conditions, mainly by scanning probe and electron transmission …
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Computer simulation and topological modeling of radiation effects in zircon
… using the concepts of primitive-rings and local clusters, were developed and used to differentiate crystalline and non-crystalline atoms in various zircon structures. Since primitive-rings and local clusters are general concepts applicable to all materials, and the algorithms to …
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An investigative research into merger of school programmes in the Department of Education in Vhembe District for the academic years 2010 to 2016
… that proper consultation with relevant local structures like traditional leaders in particular is crucial to ensure that the merging of schools is implemented with minimal challenges. Correct interpretation, implementation of policies and effective monitoring of programmes should be …
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CNT-reinforced polymer nanocomposite by molecular dynamics simulations
… CNTs, interactions in the interfacial region and local molecular changes in polymer due to the vicinity of the CNTs. Strong adhesive interactions between the matrix and CNT leads to good compatibility preventing the aggregation of the reinforcements and results in optimal mechanical response. Even …
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Implicit Learning of Spatial Context in Adolescents and Adults with Autism Spectrum Disorder
… abilities, such as superior processing of local structures (Happé & Frith, 2006; Mottron, Dawson, Soulières, Hubert, & Burack, 2006), may also show intact or even superior learning of visuospatial information. In a series of experiments, with adolescents and adults with ASD and a comparison …
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Learning Spatio-Temporal Correlations from Dynamic and Sparse Data
… of spatial distributions by embedding global and local structures directly in the spatial reference frame. This interdisciplinary thesis provides a novel perspective on how to connect spatio-temporal learning methods and dynamic environments, using oceanographic use cases as an example. This …
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Topology and geometry-based methods for quantifying the complexity of protein structures
… Vassiliev measure) to quantify three-dimensional structures of tau filaments in the Protein Data Bank, this research provides a new classification of tauopathies based on the global and local structures of different tau filaments. This novel classification reveals more subtle differences in the …
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Timing and emplacement of the Philipsburg batholith, SW Montana, and a comparison of two magnetic fabric techniques
… investigates the relationship of magma flow to local structures in the Philipsburg Batholith, a Late Cretaceous intrusion that cross-cuts the Georgetown-Princeton Thrust in the Flint Creek Range of southwest Montana. Well defined, mostly subhorizontal AMS fabrics were measured from 119 sites in …
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Beyond Relief and Rehabilitation: The Role of NGOs in Kenya's Development, 1924--2000
… and civil servants, and the ensuing tensions in local structures and institutions. It investigates how these NGOs strive to 'indigenize' their work developmentally in order to foster 'sustainable development' and how local dynamics and environments influence them, and vise versa. The dissertation …
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On the Use of Network Control Techniques in Pursuit of Influence Spread in Complex Networks
… the relationship between different global and local network structures and the number of driver nodes needed to control a given structure. This reveals what structures are easier to control and the resources needed to control them. The first component of the thesis highlights how differing …
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Ab Initio Study of Amorphous Zeolitic Imidazolate Framework (A-ZIF) and Pyrophosphate crystals
… of five pyrophosphate crystals with very complex structures are studied. Existing structures from single-crystal X-ray diffraction shows short O-H bonds, which are rectified by density functional theory (DFT) calculations. The complex interplay of the minor differences in specific local structures …
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THE PETROLOGY AND GEOCHEMISTRY OF HIGH CASCADE VOLCANICS IN SOUTHERN WASHINGTON: MOUNT ST. HELENS VOLCANO AND THE INDIAN HEAVEN BASALT FIELD (TRACE ELEMENT, ISOTOPES, MINERALOGY)
… of volcanic rock types in relation to local structures in the Cascade Range of southern Washington and northern Oregon suggests that crustal structure may influence the degree of evolution of specific volcanic fields. Two associations are observed: (1) Significant amounts of dacitic, as …
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