Search results
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Title
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An Integrated Phylogeographic Analysis of the Bantu Migration
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Author
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Ford, Colby
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Date Created
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2018
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Subjects--Topical
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Computer science, Mathematics, Genetics
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Description
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"Bantu" is a term used to describe lineages of people in around 600 different ethnic groups on the African continent ranging from modern-day Cameroon to South Africa. The migration of the Bantu people, which occurred around 3,000 years ago, was in...
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Title
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ESTIMATES FOR THE NUMBER OF EIGENVALUES OF NON-SELF-ADJOINT OPERATORS
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Author
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Hulko, Artem
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Date Created
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2018
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Subjects--Topical
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Mathematics
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Description
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In this dissertation we find estimates for the total number of eigenvalues of non-self-adjoint operators. We consider five different operators, three of them discrete and two continuous. Discrete operators are as follows: Schrödinger operator defi...
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Title
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Improving Semiparametric Estimation of Longitudinal Data with Covariance Function
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Author
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Fang, Fang
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Date Created
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2018
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Subjects--Topical
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Mathematics, Statistics, Biometry
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Description
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In this dissertation, we aim to improve efficiency of estimation in longitudinal data under generalized semi-parametric varying-coefficient models.First, we investigate a profile weighted least square approach for model estimation by utilizing wit...
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Title
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Limit Cycles in Two Dimensional Systems of Ordinary Differential Equations
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Author
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Rowe, Ashley
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Date Created
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2018
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Subjects--Topical
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Mathematics
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Description
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This thesis concerns cycles, i.e., topological ovals, in the phase portraits of systems of first order ordinary differential equationsin the plane, with an emphasis on limit cycles, cycles that are isolated from all other cycles. These are of fund...
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Title
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OPTION VALUATION UNDER A REGIME-SWITCHING MODEL USING THE FAST FOURIER TRANSFORM
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Author
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Sohrabi, Elham
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Date Created
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2018
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Subjects--Topical
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Finance, Mathematics
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Description
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In this dissertation, we consider European-style commodity options and futures options where the logarithm of the underlying commodity price dynamics is governed by the regime-switching Ornstein-Uhlenbeck model. A semi-analytical approach to value...
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Title
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THE BRAID INDICES OF ALTERNATING LINKS
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Author
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Liu, Pengyu
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Date Created
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2018
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Subjects--Topical
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Mathematics
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Description
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It is well known in knot theory that any link can be represented by a closed braid and the braid index of a link is the invariant defined as the minimum number of strands in any closed braid representing the link. It is difficult in general to det...