Now showing items 88-107 of 415

• #### Elliptic equations: Single boundary measurements ﻿

(Springer, 2017)
In this chapter we consider the elliptic second-order differential equation Au=finΩ,f=f0−∑j=1n∂jfjAu=finΩ,f=f0−∑j=1n∂jfj with the Dirichlet boundary data u=g0on∂Ω.u=g0on∂Ω. We assume that A = div(−a∇) + b ⋅ ∇ + c ...
• #### Enhanced thermal and dielectric performance in ternary $PVDF/PVP/Co_3O_4$ nanocomposites ﻿

(Wiley, 2021-11-11)
The main objective of this research was to prepare high thermal and dielectric performance $PVDF/PVP/Co_3O_4$ nanocomposites (PVDF, oply(vinylidene fluoride); PVP, polyvinylpyrrolidone) using the method of solution mixing. ...
• #### Enhancement of the critical current density in FeO-coated MgB2 thin films at high magnetic fields ﻿

(BEILSTEIN-INSTITUT, 2011-12-14)
The effect of depositing FeO nanoparticles with a diameter of 10 nm onto the surface of MgB2 thin films on the critical current density was studied in comparison with the case of uncoated MgB2 thin films. We calculated the ...
• #### Epileptic foci localization using the inverse source problem for Maxwell's equations ﻿

(Wichita State University, 2020-05)
Consider an application of the inverse source problem for Maxwell's equations to the matter of epileptic foci localization in the human brain. Using a current dipole to model the epileptic focus in the brain, and by ...
• #### Equilibrium configurations for a floating drop ﻿

(Birkhäuser-Verlag, Basel, 2004-12-01)
If a drop of fluid of density ρ1 rests on the surface of a fluid of density ρ2 below a fluid of density ρ0, ρ0 < ρ1 < ρ2, the surface of the drop is made up of a sessile drop and an inverted sessile drop which match an ...
• #### Equivalence testing for mean vectors of multivariate normal populations ﻿

(Wichita State University, 2010-05)
This dissertation examines the problem of comparing samples of multivariate normal data from two populations and concluding whether the populations are equivalent; equivalence is defined as the distance between the mean ...
• #### Estimating cumulative incidence functions when the life distributions are constrained ﻿

In competing risks studies, the Kaplan-Meier estimators of the distribution functions (DFs) of lifetimes and the corresponding estimators of cumulative incidence functions (CIFs) are used widely when no prior information ...
• #### Estimation of a star-shaped distribution function ﻿

(Taylor & Francis LTD, 2017)
A life distribution function (DF) F is said to be star-shaped if F(x)/x is nondecreasing on its support. This generalises the model of a convex DF, even allowing for jumps. The nonparametric maximum likelihood estimation ...
• #### Estimation of distributions with the new better than used in expectation property ﻿

(Elsevier, 2013-05)
A lifetime X with survival function S, mean residual life function (MRL) M, and finite mean μ is said to be new better than used in expectation (NBUE) if M(t)≤μ for all t≥0. We propose a new estimator for S, based on a ...
• #### Examples of discontinuity for the variational solution of the minimal surface equation with Dirichlet data on a domain with a nonconvex corner and locally negative mean curvature ﻿

(Wichita State University, 2013-12)
The purpose of this thesis is to investigate the role of smoothness, specifically the smoothness of the boundary ∂Ω, in the behavior of the variational solution f on a domain Ω to the Dirichlet problem for the Minimal ...
• #### The existence of Morse-Smale diffeomorphisms in the family of Hénon maps ﻿

(Wichita State University, 2009-05)
We consider Hénon maps on ℝ² of the form fa,c(x,y)=(y,y2+c+ax) with real parameters (a, c). Due to the work of S. Hayes and C. Wolf [8], we provide a detailed investigation of the parameters 0 < a < 1 and c = 0. For each ...
• #### Experimental pairwise entanglement estimation for an N-qubit system: a machine learning approach for programming quantum hardware ﻿

(Springer, 2020-11-03)
Designing and implementing algorithms for medium- and large-scale quantum computers is not easy. In the previous work, we have suggested, and developed, the idea of using machine learning techniques to train a quantum ...
• #### Extending the piecewise exponential estimator of the survival function ﻿

(Wichita State University. Graduate School., 2008-04-25)
We propose a new way of extending the piecewise exponential estimator (PEXE) beyond the last observation, where the original PEXE and the Kaplan-Meier estimator (KME) of the true survival function (SF) are undefined. ...
• #### Fairest edge usage and minimum expected overlap for random spanning trees ﻿

(Elsevier, 2021-05)
Random spanning trees of a graph $G$ are governed by a corresponding probability mass distribution (or "law"), $\mu$ defined on the set of all spanning trees of $G$ This paper addresses the problem of choosing $\mu$ in ...
• #### A fast local level set method for inverse gravimetry ﻿

(Global-Science Press, 2011)
We propose a fast local level set method for the inverse problem of gravimetry. The theoretical foundation for our approach is based on the following uniqueness result: if an open set D is star-shaped or x(3)-convex with ...
• #### First measurement of electron neutrino appearance in NOvA ﻿

(American Physical Society, 2016-04-13)
We report results from the first search for $\nu_\mu\to\nu_e$ transitions by the NOvA experiment. In an exposure equivalent to $2.74\times10^{20}$ protons-on-target in the upgraded NuMI beam at Fermilab, we observe 6 events ...
• #### First measurement of muon-neutrino disappearance in NOvA ﻿

(American Physical Society, 2016-03-25)
This paper reports the first measurement using the NOvA detectors of $\nu_\mu$ disappearance in a $\nu_\mu$ beam. The analysis uses a 14 kton-equivalent exposure of $2.74 \times 10^{20}$ protons-on-target from the Fermilab ...
• #### Fischer-Tropsch synthesis: Activity and selectivity of chi-Fe5C2 and circle minus-Fe3C carbides ﻿

(American Chemical Society, 2014-08-10)
Two different iron carbides, Hägg (χ-Fe5C2) and cementite (ϴ-Fe3C) for Fischer-Tropsch synthesis (FTS) was investigated. Both iron carbides were oxidized to Fe3O4 ​during FTS. Hägg carbide (χ-Fe5C2), initially exhibits ...
• #### Fischer-Tropsch synthesis: Deactivation as a function of potassium promoter loading for precipitated iron catalyst ﻿

(Springer, 2014-10)
The effect of potassium promoter loading (0, 0.5, 1.0 and 2.0 atomic ratio) on the performance of precipitated iron catalysts was investigated during Fischer-Tropsch synthesis using a continuously stirred tank reactor. ...