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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 33 for “"matrix models"”.
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Emergent Phenomena in Matrix Models
… work we perform a careful study of different matrix models and particularly the property of emergent phenomena in them. We start discussing a 2-matrix model of Yang-Mills type that exhibits an emergent topology in the strong coupling limit. We use Monte-Carlo simulations to obtain various …
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Statistical inference in high-dimensional matrix models
Matrix models are ubiquitous in modern statistics. For instance, they are used in finance to assess interdependence of assets, in genomics to impute missing data and in movie recommender systems to model the relationship between users and movie ratings. Typically such models are either …
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Regge pole and K-matrix models for two particle reactions
… reactions near 1 BeV/c are studied using the Kmatrix formalism. It is found that the general features of the experimental data, including the I = 1 peak in the total cross section are reproduced without the assumption of a KN resonance. It is found the agreement with experiment is best for the …
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Analysis of supersymmetric field theories via AdS/CFT, brane setups and matrix models
N = 1 theories whose matrix model spectral curve develops Argyres-Douglas singularities are constructed. The large N expansion breaks down at the critical points with domain wall tensions scaling as a fractional power of N. However, there exist double scaling limits that are conjectured to define a …
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A comparison of individual-based and matrix projection models to applied to fish population and community dynamics
Matrix projection models and individual-based models (IBM) are commonly used for the analysis and management of fish populations. Matrix models break down the population into age or stage classes, while IBMs track individuals. I perform a series of quantitative comparisons between the predictions …
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The stochastic operator approach to random matrix theory
Classical random matrix models are formed from dense matrices with Gaussian entries. Their eigenvalues have features that have been observed in combinatorics, statistical mechanics, quantum mechanics, and even the zeros of the Riemann zeta function. However, their eigenvectors are …
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Modeling Effects of Mortality on Indiana Bat (Myotis Sodalis) Populations at Wind Energy Facilities
… on Indiana bat populations over time. Leslie matrix models were used to estimate the growth or decline of a population over time under different scenarios of mortality levels, starting population sizes, methods of incorporating mortality and carrying capacities. Density-independent, …
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Numerical studies of the critical behaviour of non-commutative field theories
We study the critical behaviour of matrix models with builtin SU(2) geometry by using Hybrid Monte Carlo (HMC) techniques. The first system under study is a matrix regularization of the φ4 theory defined on the sphere. We develop a HMC algorithm together with an SU(2) gauge-fixing procedure in …
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The Demography and Community Characterization of he Federally Endangered Herb, Trillium Persistens: A Study Across Its Range Including A Fire-Dependent Habitat
… Census data to construct stage-based demographic matrix models to project population dynamics within each site over 25 years. Projections were determined using a low estimate and high estimate of fecundity. More individuals were found across sites in 2010 compared to 2009, but life stage structure …
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Characteristic polynomials of random matrices and their role in an effective theory of strong interactions
… on the spectral eigenvalue statistics of random matrix models, with applications in effective field theory models of Quantum chromodynamics (QCD). The symmetries of the field theory lead to random matrix ensembles named chiral Gaussian Unitary Ensemble (chGUE(N)) and extensions thereof. The …
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Testing and modeling of photo-electric modulators
… for modulation. I developed analytical and T-Matrix models to extract physical parameters from the transmission scans, such as light transmission, loss in the ring, and index of refraction of the contact section. The modulators worked with an open eye up to frequencies of 600 MHz. A …
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Stability and Change in Goal Orientation and Their Relationship with Performance: Testing Density Distributions Using Latent Trait-State Models
… with Latent Trait-State (LTS) covariance matrix models (Steyer, Ferring, & Schmitt, 1992) this study tested the hypothesis that goal orientation, whether measured as a general trait, a domain-specific trait, or state, is density distribution. In addition, LTS models were hypothesized to …
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Quantum Resources in Quantum Technologies: From Quantum Optimization to Many-Body Physics
… across chaotic to integrable regimes in random-matrix models, highlighting the need for a multifaceted approach in quantum simulation. These investigations provide a deeper understanding of quantum technologies, from optimization to simulation, and lay the foundation for future developments …
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Topics in linear spectral statistics of random matrices
The behavior of the spectrum of a large random matrix is a topic of great interest in probability theory and statistics. At a global level, the limiting spectra of certain random matrix models have been known for some time. For example, the limiting spectral measure of a Wigner matrix is a …
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Computational Methods for the Measurement of Protein-DNA Interactions
… to short DNA sequences. Existing and new models of protein sequence specificty are investigated and their ability to predict genomic locations is evaluated. Public data from a micro-fluidic experiment is used to fit a matrix model of binding specificity for a single transcription factor. …
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Effects of the aquatic to terrestrial habitat ratio on an amphibian predator and its prey
This dissertation explores the effects of varying the composition of aquatic and terrestrial habitats in a landscape: the aquatic to terrestrial ratio) on amphibians that use both the aquatic and terrestrial habitats during their lives. In Chapter 1, I first used meta-analysis and simulations to …
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Eigenvalue statistics for beta-ensembles
Random matrix theory is a maturing discipline with decades of research in multiple fields now beginning to converge. Experience has shown that many exact formulas are available for certain matrices with real, complex, or quaternion entries. In random matrix jargon, these are the cases β = 1, 2 and …
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Impacts of Deer and Honeysuckle on the Endangered Trillium Reliquum and Its Associated Plant Community
… stable trillium populations. Empirical data and matrix models demonstrated that removal of honeysuckle results in significant population increases. This suggests that honeysuckle suppresses T. reliquum emergence. Conservation efforts for T. reliquum should focus on long-term deer population …
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