Kinetic Effects In 2d And 3d Quantum Dots: Comparison Between High And Low Electron Correlation Regimes, 2018 Sacred Heart University

#### Kinetic Effects In 2d And 3d Quantum Dots: Comparison Between High And Low Electron Correlation Regimes, Marlina Slamet, Viraht Sahni

*Marlina Slamet*

Kinetic related ground state properties of a two-electron 2D quantum dot in a magnetic field and a 3D quantum dot (Hooke’s atom) are compared in the Wigner high (HEC) and low (LEC) electron correlation regimes. The HEC regime corresponds to low densities sufficient for the creation of a Wigner molecule. The LEC regime densities are similar to those of natural atoms and molecules. The results are determined employing exact closed-form analytical solutions of the Schrödinger-Pauli and Schrödinger equations, respectively. The properties studied are the local and nonlocal quantal sources of the density and the single particle density matrix; the ...

Conducting Nuclear Security Culture Self-Assessments In Nuclear Research Facilities Using The Iaea Methodology, 2018 National Nuclear Energy Agency of Indonesia (BATAN)

#### Conducting Nuclear Security Culture Self-Assessments In Nuclear Research Facilities Using The Iaea Methodology, Anhar Riza Antariksawan, Khairul Khairul, Heru Umbara, Endang Kristuti, Bayu Purnomo

*International Journal of Nuclear Security*

The National Nuclear Energy Agency of Indonesia (BATAN) has promoted the culture and assessment of nuclear security in Indonesia since 2010. After conducting a successful trial assessment in 2012, BATAN performed a second self-assessment in 2015 in three nuclear facilities. The assessment's methodology followed the guidelines set by the International Atomic Energy Agency (IAEA). The objective of this paper is to demonstrate the techniques used in applying the IAEA methodology and to discuss the primary outcomes of the assessment. The data collection consisted of surveys, interviews, document reviews, and observations. A total of about 50% of the three facilities ...

Data For A Hybrid Fluxgate And Search Coil Magnetometer Concept Using A Racetrack Core, 2018 University of Iowa

#### Data For A Hybrid Fluxgate And Search Coil Magnetometer Concept Using A Racetrack Core, David M. Miles

*Research Data*

No abstract provided.

Templates For Representable Matroids, 2018 Louisiana State University and Agricultural and Mechanical College

#### Templates For Representable Matroids, Kevin Manuel Grace

*LSU Doctoral Dissertations*

The matroid structure theory of Geelen, Gerards, and Whittle has led to a hypothesis that a highly connected member of a minor-closed class of matroids representable over a finite field is a mild modification (known as a *perturbation*) of a frame matroid, the dual of a frame matroid, or a matroid representable over a proper subfield. They introduced the notion of a *template* to describe these perturbations in more detail. In this dissertation, we determine these templates for various classes and use them to prove results about representability, extremal functions, and excluded minors.

Chapter 1 gives a brief introduction to ...

Apotik Jual Obat Aborsi Madiun 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Madiun, 2018 Golden Gate University School of Law

#### Apotik Jual Obat Aborsi Madiun 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Madiun, Apotik Cytotec

*Apotik Cytotec*

Apotik Jual Obat Aborsi Kepanjen 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Kepanjen, 2018 University of South Carolina - Beaufort

#### Apotik Jual Obat Aborsi Kepanjen 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Kepanjen, Apotik Cytotec

*Apotik Cytotec*

Apotik Jual Obat Aborsi Kraksaan 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Kraksaan, 2018 Golden Gate University School of Law

#### Apotik Jual Obat Aborsi Kraksaan 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Kraksaan, Apotik Cytotec

*Apotik Cytotec*

Apotik Jual Obat Aborsi Lamongan 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Lamongan, 2018 Golden Gate University School of Law

#### Apotik Jual Obat Aborsi Lamongan 081901222272 Agen Obat Cytotec Penggugur Kandungan Di Lamongan, Apotik Cytotec

*Apotik Cytotec*

Average Mixing Matrix Of Trees, 2018 University of Waterloo

#### Average Mixing Matrix Of Trees, Chris Godsil, Krystal Guo, John Sinkovic

*Electronic Journal of Linear Algebra*

The rank of the average mixing matrix of trees with all eigenvalues distinct, is investigated. The rank of the average mixing matrix of a tree on n vertices with n distinct eigenvalues is bounded above by ⌈n/2⌉. Computations on trees up to 20 vertices suggest that the rank attains this upper bound most of the time. An infinite family of trees whose average mixing matrices have ranks which are bounded away from this upper bound, is given. A lower bound on the rank of the average mixing matrix of a tree, is also given.

Numerical And Analytical Bounds On Threshold Error Rates For Hypergraph-Product Codes, 2018 University of Nebraska - Lincoln

#### Numerical And Analytical Bounds On Threshold Error Rates For Hypergraph-Product Codes, Alexey Kovalev, Sanjay Prabhakar, Ilya Dumer, Leonid P. Pryadko

*Faculty Publications, Department of Physics and Astronomy*

We study analytically and numerically decoding properties of finite-rate hypergraph-product quantum low density parity-check codes obtained from random (3,4)-regular Gallager codes, with a simple model of independent X and Z errors. Several nontrivial lower and upper bounds for the decodable region are constructed analytically by analyzing the properties of the homological difference, equal minus the logarithm of the maximum-likelihood decoding probability for a given syndrome. Numerical results include an upper bound for the decodable region from specific heat calculations in associated Ising models and a minimum-weight decoding threshold of approximately 7%.

A Comparison Of The Predictive Ability Of Logistic Regression And Time Series Analysis On Business Credit Data, 2018 Kennesaw State University

#### A Comparison Of The Predictive Ability Of Logistic Regression And Time Series Analysis On Business Credit Data, Lauren Staples

*Grey Literature from PhD Candidates*

The credit industry creates models to determine the risk of lending money to consumers as well as to commercial customers. These models are heavily regulated in the U.S. as well as in other countries. Model inputs must be explainable to customers as well as to regulators. Two such modeling approaches that are currently commonly used are logistic regression models and time series models. This paper steps through the preprocessing and model building of these two models on a large commercial data set and compares the predictive ability of these two methods. The two models achieved similar accuracy results: the ...

Two Results In Drawing Graphs On Surfaces, 2018 Louisiana State University and Agricultural and Mechanical College

#### Two Results In Drawing Graphs On Surfaces, Joshua E. Fallon

*LSU Doctoral Dissertations*

In this work we present results on crossing-critical graphs drawn on non-planar surfaces and results on edge-hamiltonicity of graphs on the Klein bottle. We first give an infinite family of graphs that are 2-crossing-critical on the projective plane. Using this result, we construct 2-crossing-critical graphs for each non-orientable surface. Next, we use 2-amalgamations to construct 2-crossing-critical graphs for each orientable surface other than the sphere. Finally, we contribute to the pursuit of characterizing 4-connected graphs that embed on the Klein bottle and fail to be edge-hamiltonian. We show that known 4-connected counterexamples to edge-hamiltonicity on the Klein bottle are hamiltonian ...

Correlation Matrices With The Perron Frobenius Property, 2018 Wilfrid Laurier University

#### Correlation Matrices With The Perron Frobenius Property, Phelim P. Boyle, Thierno B. N'Diaye

*Electronic Journal of Linear Algebra*

This paper investigates conditions under which correlation matrices have a strictly positive dominant eigenvector. The sufficient conditions, from the Perron-Frobenius theorem, are that all the matrix entries are positive. The conditions for a correlation matrix with some negative entries to have a strictly positive dominant eigenvector are examined. The special structure of correlation matrices permits obtaining of detailed analytical results for low dimensional matrices. Some specific results for the $n$-by-$n$ case are also derived. This problem was motivated by an application in portfolio theory.

Founders, Feminists, And A Fascist -- Some Notable Women In The Missouri Section Of The Maa, 2018 Missouri University of Science and Technology

#### Founders, Feminists, And A Fascist -- Some Notable Women In The Missouri Section Of The Maa, Leon M. Hall

*Leon M. Hall*

In the history of the Missouri Section of the MAA, some of the more interesting people who influenced the growth and development of the section through the years were and are women. In this chapter, we discuss the contributions of a few (certainly not all) of these women to the Missouri Section and mathematics as a whole, including Emily Kathryn Wyant (founder of KME), Margaret F. Willerding (who dealt with sexism in the 1940s), Maria Castellani (an official in Mussolini’s Italy before coming to America), and T. Christine Stevens (co-founder of Project NExT). Without them, and others like them ...

Improving Shewhart Control Chart Performance In The Presence Of Measurement Error Using Multiple Measurements And Two-Stage Sampling, 2018 Auburn University Montgomery

#### Improving Shewhart Control Chart Performance In The Presence Of Measurement Error Using Multiple Measurements And Two-Stage Sampling, Kenneth W. Linna

*Journal of International & Interdisciplinary Business Research*

The usual Shewhart control chart efficiently detects large shifts in the mean of a quality characteristic and has been extensively studied in the literature. Most proposed alternatives to the Shewhart chart aim to improve either the signal performance for smaller mean shifts or reduce the sampling effort required to detect a larger shift. Measurement error has been shown in the literature to result in reduced power to detect process shifts. The combination of multiple measurements and two-stage sampling is considered here as a strategy for both regaining power lost due to measurement error and specifically tuning the charts for shifts ...

Automation And Enhancements To The Erau Oscom System Space Situational Awareness, 2018 Embry-Riddle Aeronautical University

#### Automation And Enhancements To The Erau Oscom System Space Situational Awareness, Sergei Bilardi, Patrick Rupp, Yevgeniy Lischuk, Joseph Stroup

*Beyond: Undergraduate Research Journal*

OSCOM, Optical tracking and Spectral characterization of CubeSats for Operational Missions, is a system developed at Embry-Riddle Aeronautical University to produce time-resolved photometry of small satellites using commercial-off-the-shelf hardware. OSCOM has been able to observe resident space objects (RSOs) as small as CubeSats using a Celestron 11” RASA and a CMOS machine vision camera from Allied Vision. By obtaining photometric measurements of satellites, a light curve can be constructed and used to help determine satellite characteristics such as spin rate, satellite state, and even satellite attitude. To enhance the OSCOM system’s ability to observe small satellites, there is ongoing ...

The Transmuted Exponentiated Additive Weibull Distribution: Properties And Applications, 2018 Benha University, Egypt

#### The Transmuted Exponentiated Additive Weibull Distribution: Properties And Applications, Zohdy M. Nofal, Ahmed Z. Afify, Haitham M. Yousof, Daniele Cristina Tita Granzotto, Francisco Louzada

*Journal of Modern Applied Statistical Methods*

A new generalization of the transmuted additive Weibull distribution is proposed by using the quadratic rank transmutation map, the so-called transmuted exponentiated additive Weibull distribution. It retains the characteristics of a good model. It is more flexible, being able to analyze more complex data; it includes twenty-seven sub-models as special cases and it is interpretable. Several mathematical properties of the new distribution as closed forms for ordinary and incomplete moments, quantiles, and moment generating function are presented, as well as the MLEs. The usefulness of the model is illustrated by using two real data sets.

Optimal Model Selection For Truncated Data Among Non-Nested Competitive Models, 2018 Malayer University, Malayer, Iran

#### Optimal Model Selection For Truncated Data Among Non-Nested Competitive Models, Parisa Torkaman

*Journal of Modern Applied Statistical Methods*

Selecting a model for incomplete data is an important issue. Truncated data is an example of incomplete data, which sometimes occurs due to inherent limitations. The maximum likelihood estimator features and its asymptotic distribution are studied, and a test statistic among non-nested competitive model of incomplete data is presented, which can select an appropriate model close to the true model. This close-to-true model under the null hypothesis of the equivalency of two competitive models against alternative hypothesis is selected.

An Inferential Method For Determining Which Of Two Independent Variables Is Most Important When There Is Curvature, 2018 University of Southern California, Los Angeles

#### An Inferential Method For Determining Which Of Two Independent Variables Is Most Important When There Is Curvature, Rand Wilcox

*Journal of Modern Applied Statistical Methods*

Consider three random variables *Y*, *X*_{1} and *X*_{2}, where the typical value of *Y*, given *X*_{1} and *X*_{2}, is given by some unknown function *m*(*X*_{1}, *X*_{2}). A goal is to determine which of the two independent variables is most important when both variables are included in the model. Let *τ*_{1} denote the strength of the association associated with *Y* and *X*_{1}, when *X*_{2} is included in the model, and let *τ*_{2} be defined in an analogous manner. If it is assumed that *m*(*X*_{1}, *X*_{2}) is given ...

Single Missing Data Imputation In Pls-Based Structural Equation Modeling, 2018 Texas A & M International University, Laredo

#### Single Missing Data Imputation In Pls-Based Structural Equation Modeling, Ned Kock

*Journal of Modern Applied Statistical Methods*

Missing data, a source of bias in structural equation modeling (SEM) employing the partial least squares method (PLS), are commonly handled with deletion methods such as listwise and pairwise deletion. Missing data imputation methods do not resort to deletion. Five single missing data imputation methods are considered employing the PLS Mode A algorithm of which two hierarchical methods are new. The results of a Monte Carlo experiment suggest that Multiple Regression Imputation yielded the least biased mean path coefficient estimates, followed by Arithmetic Mean Imputation. With respect to mean loading estimates, Arithmetic Mean Imputation yielded the least biased results, followed ...