Browsing Mathematics, Statistics, and Physics by Title
Now showing items 78-97 of 464
-
Constraints on the distance moduli, helium, and metal abundances, and ages of globular clusters from their RR Lyrae and non-variable horizontal branch stars. II. multiple stellar populations in 47 Tuc, M3, and M13
(IOP Publishing, 2017-11-10)We present a new set of horizontal branch (HB) models computed with the MESA stellar evolution code. The models adopt alpha-enhanced Asplund et al. metal mixtures and include the gravitational settling of He. They are used ... -
Construction and solution of an inverse problem posed by "Piekara’s Chair"
(Wichita State University, 2008-05)The article "Piekara's Chair: Mechanical Model for Atomic Energy Levels" by Zofia Golab-Meyer presents a model of the real-world problem of determining classical energy states suitable for high school or undergraduate ... -
Construction industrial multivariate statistical analysis based on real estate market in USA
(Wichita State University, 2016-04-29)This project mainly focus on how the land market value, in terms of GDP, CPI, construction cost index and unemployment rate, inflation rate, population and purchasing manage index, enables a relationship with the real ... -
Continuation from discrete sets and inverse problems
(Wichita State University, 2023-07)It is well known that every smooth surface S is at least locally generated by the Dirac equation with real potential. In this dissertation, we study the inverse problem of recovering this potential and surface based on ... -
Continuation of solutions of elliptic systems from discrete sets with application to geometry of surfaces
(Wichita State University, 2018-07)We obtain new estimates of stability for continuation of solutions of elliptic inequali- ties | ∂u|2 < = a|u|2 from finite discrete sets. For this we use Hormander's type of Carleman estimates for ∂-bar with boundary ... -
A convergent algorithm for a generalized multivariate isotonic regression problem
(Springer, 2012-02)Sasabuchi et al. (Biometrika 70(2):465-472, 1983) introduces a multivariate version of the well-known univariate isotonic regression which plays a key role in the field of statistical inference under order restrictions. ... -
Convex configurations for solutions to semilinear elliptic problems in convex rings
(Taylor & Francis Group, LLC, 2006-05)For a given convex ring and an L 1 function f:Ω × → + we show, under suitable assumptions on f, that there exists a solution (in the weak sense) to with {x Ω: u(x) > s} Ω1 convex, for all s (0, M). -
Covariance matrices for second-order vector random fields in space and time
(IEEE, 2011-05-01)This paper deals with vector (or multivariate) random fields in space and/or time with second-order moments, for which a framework is needed for specifying not only the properties of each component but also the possible ... -
Covariance matrix functions of isotropic vector random fields
(Taylor & Francis Group, 2014-05-15)An isotropic scalar or vector random field is a second-order random field in (d > 2), whose covariance function or direct/cross covariance functions are isotropic. While isotropic scalar random fields have been well developed ... -
Covariance structures of Gaussian and log-Gaussian vector stochastic processes
(Wichita State University, 2012-12)Although the covariance structures of univariate Gaussian and log Gaussian stochastic processes have been extensively studied in the past few decades, the development of covariance structures for Gaussian and log-Gaussian ... -
Coverage probability of tolerance levels
(Wichita State University, 2018-12)In this thesis the ideas of the tolerance limit and coverage probabilities are explored in the context of the A-basis and B-basis for composite materials. The breaking strength of composite materials are random variables ... -
Crack detection in a three dimensional body
(2006-05)We propose a method of analyzing a crack in a three dimensional body. We treat the problem as an inverse problem and apply Green’s Theorem, Trace Theorem, and the Fredholm Alternative. We model the problem using Helmholtz ... -
Curvature and symmetries of closed four-manifolds with a lower curvature bound
(Wichita State University, 2020-05)This thesis details homeomorphism classi cation theorems for closed, simply connected, Riemannian 4-manifolds admitting an isometric circle action. We proceed by imposing progressively weaker curvature conditions, which ... -
Deep underground neutrino experiment (DUNE) near detector conceptual design report
(MDPI, 2021-09-29)The Deep Underground Neutrino Experiment (DUNE) is an international, world-class experiment aimed at exploring fundamental questions about the universe that are at the forefront of astrophysics and particle physics research. ... -
Deformations of Q-curvature II
(Springer, 2022-02-11)This is the second article of a sequence of research on deformations of Q-curvature. In the previous one, we studied local stability and rigidity phenomena of Q-curvature. In this article, we mainly investigate the volume ... -
Derivation and regularization of corrections to propagators and vertices for cubically interacting scalar field theories
(Wichita State University, 2013-05)This thesis, a mainly expository work, attempts to give all the calculational details for some popular models in scalar quantum eld theory that serve a mostly pedagogical purpose. Starting with a real scalar eld with ... -
Design, construction and operation of the ProtoDUNE-SP liquid argon TPC
(IOP Publishing, 2022-01-04)The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first ... -
Development of a neutrino detector capable of operating in space
(Elsevier B.V., 2023-02-01)The vSOL experiment to operate a neutrino detector close to the Sun is building a small test detector to orbit the Earth to test the concept in space. This detector concept is to provide a new way to detect neutrinos ... -
Development, thermal and dielectric investigations of $PVDF-Y_2O_3$ polymer nanocomposite films
(Springer, 2021-04-03)This work involves preparing $PVDF-Y_2O_3$ polymer nanocomposites to improve thermal and dielectric properties. X-ray diffraction, SEM, FTIR, TGA and dielectric measurements were applied for these films. The cubic crystal ... -
Effect of gallium additions on reduction, carburization and Fischer-Tropsch activity of iron catalysts
(Springer US, 2018-07)Undoped and gallium-doped iron oxide catalysts (100Fe, 100Fe:2Ga, and 100Fe:5Ga) were prepared by following a continuous co-precipitation technique using ammonium hydroxide as precipitant. The catalysts were characterized ...