Digital Commons Network^™

Reducing Math Anxiety In The Secondary Classroom, Haley Scheldorf

Honors Capstones

Capstone submitted as a graduation requirement for the BSU Honors Program.

Genseed-Hmm: A Tool For Progressive Assembly Using Profile Hmms As Seeds And Its Application In Alpavirinae Viral Discovery From Metagenomic Data, João M.P. Alves, Andre L. De Oliveira, Tatiana O.M. Sandberg, Jaime L. Moreno-Gallego, Marcelo A.F. De Toledo, Elisabeth M.M. De Moura, Liliane S. Oliveira, Alan M. Durham, Dolores U. Mehnert, Paolo M. De A. Zanotto, Alejandro Reyes, Arthur Gruber

Open Access Publications

No abstract provided.

Hyperthermic Laser Ablation Of Recurrent Glioblastoma Leads To Temporary Disruption Of The Peritumoral Blood Brain Barrier, Eric C. Leuthardt, Chong Duan, Michael J. Kim, Jian L. Campian, Albert H. Kim, Michelle M. Miller-Thomas, Joshua S. Shimony, David D. Tran

Open Access Publications

No abstract provided.

The Fallacy Of Univariate Solutions To Complex Systems Problems, Christina N. Lessov-Schlaggar, Joshua B. Rubin, Bradley L. Schlaggar

Open Access Publications

No abstract provided.

Metastatic Granulosa Cell Tumor Of The Testis: Clinical Presentation And Management, Anand Mohapatra, Aaron M. Potretzke, Brent A. Knight, Min Han, Robert S. Figenshau

Open Access Publications

No abstract provided.

A Critical Evaluation Of The Down Syndrome Diagnosis For Lb1, Type Specimen Of Homo Floresiensis, Karen L. Baab, Peter Brown, Dean Falk, Joan T. Richtsmeier, Charles F. Hildebolt, Kirk Smith, William Jungers

Open Access Publications

No abstract provided.

Ua44/4 Wku Undergraduate Advising Handbook, Wku Academic Advising & Retention Center

WKU Administration Documents

WKU handbook for advising students in choosing and completing coursework leading to a degree.

Providing Hands-On Training With Bioinformatics Databases: A Collaboration Between Vcu Libraries & Wright Center For Clinical And Translational Research, Karen H. Gau, Julie A. Arendt, Amy Olex, Aaron R. Wolen

VCU Libraries Faculty and Staff Presentations

Background
With the goal of increasing specialized services for researchers, Virginia Commonwealth University (VCU) Libraries sent its basic science librarians to an intensive training on bioinformatics databases, “A Librarian’s Guide to NCBI.” VCU’s Wright Center for Clinical and Translational Research (Wright CCTR) was expanding the educational component of its bioinformatics support around the same time. This year, the librarians partnered with the Wright CCTR to offer an introductory bioinformatics database workshop introducing researchers to genetic/genomic databases.

Methods
For one week in June, sessions were conducted introducing up to 30 faculty and staff to The Cancer Genome Atlas and NCBI’s Gene, …

Status Of The U.S. Long-Term Ecological Research Network, Robert B. Wade, Long Term Ecological Research Network

Long Term Ecological Research Network

Contains a brief history and overview of the Long Term Ecological Research Network from 1983-2016.

Turning On The Lights: Transcending Energy Poverty Through The Power Of Women Entrepreneurs, Leslie C. Gray, Alaina Boyle, Victoria Yu

Miller Center Fellowship

Solar lanterns offer affordable, high-quality lighting in developing countries. A number of organizations, including social enterprises, make solar lanterns available to rural households as an alternative to candles or kerosene lamps. One of the most successful of these organizations is Solar Sister.

Solar Sister, a social enterprise operating in Tanzania, Uganda, and Nigeria, is dedicated to eradicating energy poverty through the economic empowerment of women. In addition to economically empowering its women entrepreneurs, the business model of Solar Sister also cultivates sales networks built on trust in last-mile distribution methods.

While Solar Sister has previously conducted research regarding its many …

2016-2017 Live At Lynn Season Program, Lynn University

Live at Lynn Programs

No abstract provided.

Latina/O Gender And Sexuality, Deena J. González, Ellie D. Hernández

History Faculty Scholarship

Gender and sexuality among US Latina/o populations encompass a continuum of experiences, historical, cultural, religious, and lived. Gender and sexuality varied by culture or ethnicity and by era across the many different Latino populations descended from Latin Americans. Latino national histories, born inside the thirty-three different Latin American countries in existence today, are united in one irrefutable link to the conquest, by Spain. The Spanish and Portuguese warred against many indigenous empires, towns, and communities encountered in 1519, and the wars continued subsequently into the 1800s, during the colonization of the Americas by other countries, including the United States.

Electronic Structure And Stability Of The Ch3Nh3Pbbr3 (001) Surface, Xin Huang, Tula R. Paudel, Peter A. Dowben, Shuai Dong, Evgeny Y. Tsymbal

Evgeny Tsymbal Publications

The energetics and the electronic structure of methylammonium lead bromine (CH₃NH₃PbBr₃) perovskite (001) surfaces are studied based on density functional theory. By examining the surface grand potential, we predict that the CH₃NH₃Br-terminated (001) surface is energetically more favorable than the PbBr₂-terminated (001) surface, under thermodynamic equilibrium conditions of bulk CH₃NH₃PbBr₃. The electronic structure of each of these two different surface terminations retains some of the characteristics of the bulk, while new surface states are found near band edges which may affect the …

Band Structure And Spin Texture Of Bi2Se3 3D Ferromagnetic Metal Interface, Jia Zhang, Julian P. Velev, Xiaoqian Dang, Evgeny Y. Tsymbal

Evgeny Tsymbal Publications

The spin-helical surface states in a three-dimensional topological insulator (TI), such as Bi₂Se₃, are predicted to have superior efficiency in converting charge current into spin polarization. This property is said to be responsible for the giant spin-orbit torques observed in ferromagnetic metal/TI structures. In this work, using first-principles and model tight-binding calculations, we investigate the interface between the topological insulator Bi₂Se₃ and 3d-transition ferromagnetic metals Ni and Co. We find that the difference in the work functions of the topological insulator and the ferromagnetic metals shift the topological surface states down about 0.5 …

Enhanced Tunneling Electroresistance In Ferroelectric Tunnel Junctions Due To The Reversible Metallization Of The Barrier, Xiaohui Liu, J. D. Burton, Evgeny Y. Tsymbal

Evgeny Tsymbal Publications

Realizing a large tunneling electroresistance (TER) effect is crucial for device application of ferroelectric tunnel junctions (FTJs). FTJs are typically composed of a thin ferroelectric layer sandwiched by two metallic electrodes, where TER generally results from the dependence of the effective tunneling barrier height on the ferroelectric polarization. Since the resistance depends exponentially not only on barrier height but also on barrier width, TER is expected to be greatly enhanced when one of the electrodes is a semiconductor where the depletion region near the interface can be controlled via ferroelectric polarization. To explore this possibility, we perform studies of SrRuO …

Methods Of Academic Dishonesty In Online Distance Education: The Technology Arms Race, Robert C. Deadman

All-Inclusive List of Electronic Theses and Dissertations

The presence of online distance Education in higher Education presents a challenge in maintaining academic integrity and preventing academic dishonesty. While academic dishonesty has been a continuing issue in face-to-face courses in higher Education, the advent and abundance of online distance Education provides an opportunity to increase exponentially the occurrence of academic dishonesty. Faculty members and staff (n = 25) have implemented various methods of preventative course design and administrative policies in order to minimize academic dishonesty, but students still commit academic dishonesty taking advantage of new technologies and methods. This research discovered the technology arms race is on for …

Berkeley Redux: Imagination As Ethical Power In Shelley's "Mont Blanc", Daniel E. Lees

Professional and Public Writing Faculty Publications

No abstract provided.

Table Of Contents, Linfield Magazine Staff

Linfield Magazine

Table of contents for Volume 13, Issue 1 of the Linfield Magazine

Math Mentors, Natalie Kelley '18

Linfield Magazine

A new grant enabled six Linfield College math students to work side-by-side with six local middle schoolers on a series of science fair projects emphasizing mathematics.

Cascade Control Of A Hydraulic Prosthetic Knee, Xin Hui

ETD Archive

A leg prosthesis test robot with hydraulic knee actuator is modeled and tested with closed loop control simulation. A cascade control architecture is designed for the system, the outer loop is controlled by a robust passivity-based controller (RPBC) and the inner loop is controlled by an optimization method. The control algorithm provides knee angle tracking with an RMS error of 0.07 degrees. The research contributes to the field of prosthetics by showing that it is possible to find effective closed loop control algorithm for a newly proposed hydraulic knee prosthesis. The simulations demonstrate the efficiency of RPBC's ability to control …

Modified Electrodes With Grafted Dna And Oligonucleotides For Detection And Quantification Of Peroxynitrate, Heba Azmy Salim

ETD Archive

Peroxynitrite (ONOO-) is a strong oxidizing and nitrating agent, and its formation has been correlated with many pathological conditions. It is generated in-vivo through the diffusion-controlled reaction between nitric oxide and superoxide. Peroxynitrite has been linked to nitration of protein and DNA as well as to DNA strand breaks. Accumulation of mutations and/or other kinds of DNA damage represent a carcinogenic risk. The accurate measurement of peroxynitrite concentration has been a challenge since this analyte is very unstable and reacts with many cellular targets. Development of analytical techniques capable of rapid and sensitive detection of this fast-reacting and damaging agent …

Pure And Binary Adsorption Of Methane And Nitrogen On Silicalite, Prahar S. Vaidya

ETD Archive

Separation processes comprise a large portion of the activity in the chemical and petrochemical industries. For the chemical, petroleum refining, and materials processing industries as a group, separation processes are considered to be critical. Almost all the applications of chemical industries involves mixtures, so innovation in separation technology not only enhances productivity and global competitiveness of U.S. industries, but is also critical for achieving the industrial energy and waste reduction goals. Traditionally, air separation to produce nitrogen and oxygen and to separate nitrogen from methane was practiced by cryogenic distillation, which involved expensive high pressure units and large requirement of …

Experimental Investigation Of Turbulent Flow Induced By New-Generation Wind Fences With Multi-Scale Fractal Structure, Sarah M. Mcclure

ETD Archive

Understanding and controlling atmospheric boundary-layer flows with engineered structures, such as porous wind fences or windbreaks, has been of great interest to the fluid mechanics and wind engineering community. Previous studies found that the regular mono-scale grid fence of 50% porosity and a bottom gap of 10% of the fence height are considered to be optimal over a flat surface. Significant differences in turbulent flow structure have recently been noted behind multi-scale fractal wind fences, even with the same porosity. In this study, wind-tunnel tests on the turbulent flow and the turbulence kinetic energy transport of 1D and 2D multi-scale …

Profiling Cell Surface Sialylation And Desialylation Dynamics Of Immune Cells, Dan Wang

ETD Archive

Sialic acids (SAs) are a diverse family of naturally occurring 2-keto-3-deoxy-nononic acids that are involved in a wide range of biological processes, including early fetal development, cellular recognition, and utilization by microbes. While it is clear that cell surface SAs are highly involved in the immune system, the sialylation status of individual immune cells and functions are still unknown. In this study, I combined the newly developed LC-MS/MS methods with flow cytometry and confocal microscopy to systematically study the sialylation and desialylation dynamics of macrophages at different conditions.

First, I developed an accurate LC-MS/MS method to quantify free SA in …

An Exploration Of African American Male College Students’ Perceptions Of Factors That Contribute To Their Academic Success, Yvette N. Daugherty-Brown

ETD Archive

According to the Congressional Black Caucus Foundation (2012), college degree attainment among African American males is only 16%, as compared to 20% for African American females, and 32% for Caucasian males. A great deal of research and emphasis has been placed on the struggles, challenges and shortcomings relative to African American male educational attainment. However, more work needs to be done to determine the factors that contribute to their academic success.

The purpose of this phenomenological qualitative study was to explore the factors that contributed to the academic success of African American male college students that participated in the Baldwin …

State Estimation Of Glucose And Insulin Dynamics, Morgan Nicholas Miller

ETD Archive

Process simulation and state estimation have very important applications in chemical engineering as well as the biomedical field. Diabetes is a rapidly growing disease in the United States with 29 million people already diagnosed. The estimation of glucose and insulin concentration in patients is necessary in order to effectively treat diabetes. The Bergman Minimal Model is a popular process model that is used to simulate glucose and insulin dynamics. A simulation of this model was created based on estimated parameters for the model from historical data. This thesis investigated the estimation of glucose concentration, insulin concentration, and effect of active …

Organizational And Systems Factors Leading To Systems Integration Success After Merger And Acquisition, Monika Glazar-Stavnicky

ETD Archive

Mergers and acquisitions (M&A) are a common technique used by companies to grow and enter new markets. The success rate of these transactions continues to be less than desired. Information Systems (IS) have been proven to be a key component influencing the success of mergers. While numerous factors have been found to lead to systems integration success, the studies have not analyzed the fit that is required when two organizations and systems are joined. This research focuses on the match between organizational variables of competencies and processes of two merging companies, as well as the match between systems variables of …

The Role Of Rnase L In Type I Diabetes And Development Of Quantitative Lc-Ms/Ms Methods For The Pharmacological Studies Of Anti-Cancer Drug Candidates, Chun Zeng

ETD Archive

PROJECT I: The cause of type I diabetes continues to be a focus of investigation. In this study, we found that 2-5A dependent RNase L (RNase L), an IFN-a-inducible enzyme that functions in IFN action against viruses and cell proliferation, played an important role in dsRNA-induced onset of type I diabetes. By using RNase L deficient RIP-B7.1 mice which are more vulnerable to environmental harmful factors such as viral infection, we demonstrated that deficiency of RNase L in mice resulted in a significant delay of diabetes onset induced by polyinosinic:polycytidylic acid (poly I:C), a type of dsRNA, and streptozotocin (STZ). …

A Simulation And Experimental Study Of Active Disturbance Rejection For Industrial Pressure Control, Xiaoxu Li

ETD Archive

The quality of control loop is very important in hydraulic machineries, where pressure must be accurately regulated in the presence of various disturbances. Proportional-Integral-Derivative (PID) control has dominated the industry for a long time and it is by far the most popular general purpose controller for pressure control. The purpose of this study is to conduct a simulation and experimental study comparing PID with an emerging new technology, namely active disturbance rejection control (ADRC). For the purpose of this study, an experimental testbed similar to those used in industry settings is used; its mathematic model is derived and used in …

The Behavior Of Simply Supported Plates Under Extreme Shear Loading, Mhd Ammar Hafez

ETD Archive

Steel plates are planar structural elements with one dimension significantly smaller than the others. These elements may fail due to either material yielding or buckling. Buckling is a sudden failure mode, which is not desirable in structural engineering applications. Buckling is called an “elastic buckling” when it happens before material yielding, and is termed as “plastic buckling” if it happens after material yielding. The focus of this thesis is on shear plates, which are plates that are primarily subjected to shear loads. Several studies were conducted to increase the elastic buckling capacity of plates by adding stiffeners to plates. However, …