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 194 for “"Degeneracy"”.
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Degeneracy control in geometric programs
Degenerate geometric data (e.g., three points on a line, four points on a circle) is known to create all sorts of special cases, some easy and some complicated, that have to be considered in implementations of geometric algorithms. Traditionally, the designers of algorithms coped with these …
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Pervasive degeneracy and epistasis in a protein-protein interface
Signal transduction pathways rely on transient yet specific protein-protein interactions. How a limited set of amino acids can enforce cognate protein interactions while excluding undesired pairings remains poorly understood, even in cases where the contacting residues have been identified on both …
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Reducing the Compositional and Structural Degeneracy of Planetary Interiors
… types of intrinsic degeneracies – compositional degeneracy and structural degeneracy – prevent precise characterization. In this thesis, I develop a planetary interior code package, CORGI, incorporating state-of-the-art physical properties of planet-forming materials. Using CORGI, I eliminate …
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A Problem From Hamiltonian Mechanics With Time -Periodic Coefficients, Small Noise, and Degeneracy
We consider a two-dimensional weakly dissipative dynamical system with time-periodic co-efficients. Their time average is governed by a degenerate Hamiltonian whose set of critical points has an interior. The dynamics of the system is studied in the presence of three time scales. The periodic …
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Naturalism Against Nature: Kinship and Degeneracy in Fin-de-siècle Portugal and Brazil
… as incidences of national, racial and sexual “degeneracy”. The thesis thus draws links between contemporaneous disquiet about the nation’s race and bloodline; the various “homosexual scandals” that rocked the period; the considerable prevalence of incest and non-normative desire in the …
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Some Results on the Degeneracy of Entire Curves and Integral Points in the Complements of Divisors
In this dissertation, we first discuss some of the important results in Nevanlinna Theory and Diophantine Approximation Theory. Next, a result by the author and Min Ru \cite{LR} is presented. In chapter 3, we extend the Second Main Theorem to the case of holomorphic curves into algebraic varieties …
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Of Mammoths, Mastodons, Megalonyxes, And The Nation: Jefferson And The Question Of American Degeneracy, 1780-1812
<p>Thomas Jefferson ranks among the most famous and most studied presidents, but few historical studies have focused on his scientific endeavors, particularly his work in natural history. By analyzing several of his writings, including the <em>Notes on the State of Virginia</em> and letters that …
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Group theoretic properties of some Schröedinger equations : systematic derivation
… as: a) geometrical groups; b) dynamical degeneracy groups; c) dynamical groups</p><p>The geometrical group arises simply from the spatial symmetry of the system. Although the geometrical groups are very useful, they are not very interesting from the physical viewpoint.</p><p>On the other …
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A High Order Correction of the Energy of a One Dimensional Model of an H2+ Molecule
… with this angular momentum, splitting the energy degeneracy of the two directions of motion about the internuclear axis. Performing a Born-Oppenheimer approximation of such a system will break the relevant energy degeneracy at eighth order. This degeneracy breaking is known as L-doubling.
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Various Manifestation of Non -Abelian Statistics in Condensed Matter Systems
… Laughlin states is reflected in its topological degeneracy, it is natural to expect non-Abelian statistics to have some effect on topological degeneracy. To study the topological degeneracy of the Moore-Read nu = 5/2 quantum Hall state on a torus, we construct the wave functions of this state in …
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Single top channel in association with H→bb̄ production at ATLAS : a feasible study
A degeneracy in the minima of the profile likelihood function of the Higgs boson coupling to fermions and bosons, where boson couplings are assumed to be positive, is reported by both ATLAS and CMS. Although one minimum lies in the region of positive fermionic coupling scale factors, consistent …
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Exceptional surfaces as topological obstructions in dynamical systems
… Thereafter we discuss classical eigensystem degeneracy and analyse its topological properties as an exceptional surface (ES). Upon identifying the limitations of this formalism in higher dimensional systems, we develop a formulation of an "edge insertion" describing a singular adjustment made …
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Symplectic cohomology and duality for the wrapped Fukaya Category
… Lagrangians in a Liouville manifold. Under a non-degeneracy condition implying the existence of enough Lagrangians, we show that natural geometric maps from the Hochschild homology of W to symplectic cohomology and from symplectic cohomology to the Hochschild cohomology of W are isomorphisms, in a …
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Prediction of Microstructural and Conformational Evolutions through Application of Steepest-Entropy-Ascent Quantum Thermodynamics
… the energy spectrum of a modeled system, namely degeneracy. The degeneracy, or density of states, is the number of unique system configurations for a given energy level. Calculating this quantity is often difficult, limiting many solid-state material studies to the few systems with analytical …
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The role of binary stars in searches for extrasolar planets by microlensing and astrometry
… with more extreme mass ratios. Problem of degeneracy in photometric light curve solution between binary lens and binary source microlensing events was studied on simulated data, and data observed by the PLANET collaboration. The fitting code BISCO using the PIKAIA genetic algorithm …
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Excess Porteous, Coherent Porteous, and the Hyperelliptic Locus in M3
… formula to determine an expression for a certain degeneracy locus of this map. One would like to extend their idea in order to compute an expression for the divisor associated to the closure of the hyperelliptic locus, in the Chow ring of the moduli space of stable curves (of genus 3.) Recent work …
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Localisation faible de la lumière dans un gaz d´atomes froids
… contribution, we study the impact of the degeneracy of the atomic dipole transition on weak localisation of light. The non-scalar components of the atomic scattering operator are characteristic of the internal structure, and strongly modify the interference properties of multiple light …
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Variable neighbourhood search based heuristic for K-harmonic means clustering
… the final solution. Hence, I present a removing degeneracy code for KHM. I also apply VNS to improve the code of KHM after removing the evidence of degeneracy.
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Coloring and Packing Problems for D-Degenerate Graphs
… We also show that other than maximum degrees, degeneracy of graphs is also important in packing.
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