Browsing Mathematics, Statistics, and Physics by Title
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Stability of continuation and obstacle problems in acoustic and electromagnetic scattering
(Wichita State University, 201012)Study of the Cauchy problem for Helmholtz equation is motivated by the inverse scattering theory and more generally by remote sensing. In this dissertation the increased stability of the Cauchy problem for Helmholtz ... 
Stability of coupled strings vibration system due to different boundary conditions
(IEEE, 19930602)We study the rate of convergence of a coupled wave systems under two different boundary conditions, energy absorbing in two ends for one and free or fixed boundary controls in two ends for the other one. We will observe ... 
Stability of inviscid vortices behind a circular cylinder
(American Physical Society, 20051121)In a previous work (JFM 409(2000), 1327 famillies of vortex patches in equilibrium with flow past a circular cylinder which is uniform at infinity were found using iterations for a nonlinear Poisson equation. These included ... 
The stabilization of a linearized selfexcited wave equation by an energy absorbing boundary
(IEEE, 19920624)We study the linrized selfexcited wave quation tt  A £ P(s) tg=0, where P(s)>0, P(r)eL(f), in a bounded domain 0cRI with smooth bounar r whee boun y dampig is prst. coniering the prtii Fr 1r.).of he bouM~ ron which ... 
Stationary and isotropic vector random fields on spheres
(Springer, 201208)This paper presents the characterization of the covariance matrix function of a Gaussian or secondorder elliptically contoured vector random field on the sphere which is stationary, isotropic, and mean square continuous. ... 
Stationary random fields in space and time with rational spectral densities
(IEEE, 200703)This paper introduces three spatio–temporal stationary random fields with simple correlation functions and rational spectral densities. The correlation functions have similar forms, but are defined on different space–time ... 
Stationary time series resulting from certain positive definite kernels and simulation via highorder vector autoregressive models
(Wichita State University, 201305)Vector autoregressive models have traditionally been used to model and forecast multivariate time series data, predicting future values based on previous observations. In this thesis, we introduce some multivariate time ... 
Status and latest results from MIPP
(Elsevier, 201212)We briefly review the need for high quality hadron production data. The Main Injector Particle Production experiment (MIPP) at Fermilab collected data in 2005/2006 and published final results on forward neutron production ... 
Steady axisymmetric vortex flows with swirl and shear
(Cambridge University Press, 20081001)A general procedure is presented for computing axisymmetric swirling vortices which are steady with respect to an inviscid flow that is either uniform at infinity or includes shear. We consider cases both with and without ... 
Steady axisymmetric vortex flows with swirl and shear
(Cambridge University Press, 200810)A general procedure is presented for computing axisymmetric swirling vortices which are steady with respect to an inviscid flow that is either uniform at infinity or includes shear. We consider cases both with and without ... 
Stellar modeling with lowtemperature onthefly opacity
(Wichita State University, 202105)Accurate stellar modeling requires using our understanding of phenomena far smaller than humans can observe to study some of the largest objects in the universe. One quantity that bridges this gap is the mean opacity, ... 
Stellar models of multiple populations in globular clusters  I. The main sequence of NGC 6752
(Oxford University Press, 20150111)We present stellar atmosphere and evolution models of mainsequence stars in two stellar populations of the Galactic globular cluster NGC 6752. These populations represent the two extremes of lightelement abundance ... 
Stochastic monotonicity of a distribution family associated with matrix projections and its applications
(Wichita State University, 201912)This dissertation defines a distribution family based on the distribution of a random variable associated with the projections of a normally distributed random matrix with un known mean onto a linear space and onto a ... 
Stochastic representations of isotropic vector random fields on spheres
(Taylor & Francis Group, 2016)A stochastic representation is derived for a vector random field that is stationary, isotropic, and mean square continuous on a sphere or unit circle. The established stochastic representation is an infinite series involving ... 
Stress testing the vectorbosonfusion approximation in multijet final states
(American Physical Society, 20180822)We consider electroweak Higgs plus three jets production at NLO QCD beyond strict VBF acceptance cuts. We investigate, for the first time, how accurate the VBF approximation is in these regions and within perturbative ... 
Strict Whitney arcs and tquasi selfsimilar arcs
(Wichita State University, 201805)A connected compact subset E of RN is said to be a strict Whitney set if there exists a realvalued C1 function f on RN with ∇f E ≡ 0 such that f is constant on no nonempty relatively open subsets of E. We prove that ... 
Structural analysis and cations distribution of nanocrystalline Ni1xZnxFe1.7Ga0.3O4
(Elsevier B.V., 20140909)Nanostructured Ni1xZnxFe1.7Ga0.3O4, with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5 were prepared by citrate method and were investigated using Xray diffraction and Mossbauer spectroscopy. The structure characterized using Xray ... 
Student's t vector random fields with powerlaw and loglaw decaying direct and cross covariances.
(Taylor & Francis, Inc, 20130101)This article deals with the Student's t vector random field, which is formulated as a scale mixture of Gaussian vector random fields, and whose finitedimensional distributions decay in powerlaw and have heavy tails. There ... 
Study of Morin transition in hematite (a Fe₂O₃) nanoparticles by Mössbauer spectroscopy
(Wichita State University, 202007)The change in magnetic properties of hematite (a Fe₂O₃) nanoparticles were investigated by observing the change of Morin transition fraction at different temperatures. Xray diffraction, transimission electron microscope ... 
A study of particular coordinate systems
(Wichita State University, 201105)This thesis is a study of the properties and relationships between isothermal, harmonic and characteristic coordinate systems. The proof of the existence of isothermal and characteristic coordinates on a manifold which ...