Digital Commons Network^™

Cocrfeni High-Entropy Alloy As An Enhanced Hydrogen Evolution Catalyst In An Acidic Solution, Frank Mckay, Yuxin Fang, Orhan Kizilkaya, Prashant Singh, Duane D. Johnson, Amitava Roy, David P. Young, Phillip T. Sprunger, John C. Flake, William A. Shelton, Ye Xu

Faculty Publications

High-entropy alloys (HEAs) have intriguing material properties, but their potential as catalysts has not been widely explored. Based on a concise theoretical model, we predict that the surface of a quaternary HEA of base metals, CoCrFeNi, should go from being nearly fully oxidized except for pure Ni sites when exposed to O2 to being partially oxidized in an acidic solution under cathodic bias, and that such a partially oxidized surface should be more active for the electrochemical hydrogen evolution reaction (HER) in acidic solutions than all the component metals. These predictions are confirmed by electrochemical and surface science experiments: the …

Topology Optimization Of 2d Structures With Multiple Displacement Constraints, Patricio Uarac Pinto

International Programs

The use of topology optimization in the design process in Civil Engineering can lead to innovative building shapes that not only fulfill structural requirements but also open new opportunities for arquitectonics.

The Case For Shifting Clinical Dentistry Toward Regenerative Biological Treatment Using Stem Cells: A Life-Changing Impact On The Profession’S Future, Merna Gress

International Programs

The conventional current procedures targeting the periodontal treatment for the diseased teeth and gums are based on arresting the destruction of these supporting structures and limiting the number of bacteria present. However, an ideal treatment would be regenerative in nature and should be accompanied with the reconstruction of these periodontal tissues back to normal. The application of Regenerative Dentistry is achieved through using the concept of cell and molecular biology to empower dental treatments that target a repair process for oral tissues instead of utilizing synthetic materials. One of the main applications of this concept is adult tissue-derived Mesenchymal Stem …

Why Indonesia Needs A New Energy Paradigm, Aditya Prasetyo

International Programs

The problem of Indonesia's dependence on petroleum as its main energy source can be overcome by instead using an energy mix. This study focuses on optimal utilization of other energy resources that can help to meet the demand for energy in Indonesia and help to reduce its dependence on oil, thereby preventing a future energy crises.

Controlling Vector-Borne Diseases Through Paratransgenesis, Juliane Buzzon Meneghesso Verga

International Programs

The high incidence of Vector-borne diseases (VBDs) and the inefficiency of current methods in preventing and treating them have been driving research for alternative solutions. Here, we present an approach called paratransgenesis that could help in such challenge. In paratransgenesis, genetic modification in vectors' symbionts can be used to block the transmission of various pathogens and help preventing or even eradicate insect-transmitted diseases.

Emotional Architecture Under Modernism, Yi Chen

International Programs

The impression of modernist architecture is rational and emotionless. However, this is just a disguise of the modernist architects' emotional pursuit. This article aims to expose and analyze the architectural emotion in the context of modernism.

The Age And Growth Of The Yellow Stingray (Urobatis Jamaicensis) In Southeast Florida, Jessica Schieber

All HCAS Student Capstones, Theses, and Dissertations

The yellow stingray, Urobatis jamaicensis (Cuvier 1816), is a coastal species that has limited known life-history information, especially regarding their age and growth patterns. Age estimates were assigned by counting band-pairs deposited on the vertebral centrum of stingrays caught between 2003 and 2019 (n = 195). Marginal increment analysis of different size classes was used to validate age estimates, with the largest class having verified annual band deposition (ANOVA, F(9,7), P = 0.029). Age estimates ranged between females, and rates, but females attained larger sizes with the largest observed DW being 241-mm and 216-mm for females and males, respectively. …

1:38, Yuhao Sheng

Theses

This thesis support paper demonstrated the entire process of creating this thesis film "1:38," describing how this film completed from a simple inspiration to a finished film project. Besides, this paper also describes how the author's ideas formed from the beginning and his inner struggle during the quarantine period, which inspired the author to create this film. Thirdly, this paper clarifies how the whole film team worked and our considerations about different problems during the film shooting. I believe this paper would be a good reference for the students to shoot their films with a low budget.

Central High School Play Program, Memphis, 1916

Shelby County, Tennessee

Program for a performance of "As You Like It" by the June Class of Central High School, Memphis, Tennessee, on April 25, 1916. The program also lists the members of the 1916 graduating class and the faculty. The program was found in the scrapbook of Daisy Kirk of the West Tennessee State Normal School's Sigma Alpha Mu sorority.

New Center For Mathematics And Science Education Director Takes Charge, Edwin B. Smith

University of Mississippi News

Alice Steimle has helped lead center's programs to improve STEM education for 14 years

Wastewater-Based Epidemiology As A Predictor Of Sars-Cov-2 Positive Case Rates, Matthew Muellner, Michael Wiley, Catherine Pratt, Shannon Bartelt-Hunt, Teresa Anderson, James Lawler

Posters: 2021 Summer Undergraduate Research Program

The global response to the SARS-CoV-2 pandemic has demonstrated several limitations, including personal protective equipment (PPE) shortages and absence of sufficient medical personnel in outbreak zones₁. These problems may be alleviated through the use of new testing methods, such as wastewater-based epidemiology (WBE), to predict potential viral outbreaks in advance of standard testing and hospital admission rates data. SARS-CoV-2 RNA is shed in the waste of infected individuals and is detected by easy and comparatively cheap sampling of communal wastewater 5-8 days post symptom onset₂. RT-qPCR of communal wastewater has been suggested as a 7-day leading …

Role Of Liver Stiffness And Alcohol On Hbv Infection Pathogenesis, Tabitha Lynn Guyett, Grace Bybee, Youra Moeun, Moses New-Aaron, Srivatsan Kidambi, Natalia Osna, Murali Ganesan

Posters: 2021 Summer Undergraduate Research Program

Hepatitis B Virus (HBV) is an infection that specifically targets hepatocytes and persistence of infection leads to inflammation and liver injury. The metabolism of alcohol is also known to cause injury and inflammation in the liver. The extent of liver damage can be analyzed by determining the pressure of the tissue with an ultrasound. As you go from a healthy liver to a fibrotic liver, the pressure increases from around 2 kPa to greater than 12.5 kPa. Previous studies have found that liver stiffness affects the primary hepatocyte function and cell interaction, but the exact mechanism behind the combined role …

Dissolvable Microneedles And Nanofiber Dressings To Eradicate Biofilms And Improve Wound Care, Jenna Cusick, Jingwei Xie, Yajuan Su

Posters: 2021 Summer Undergraduate Research Program

Biofilms are communities of microorganisms consisting of one or more bacterial species that attach to a biotic or abiotic surface. Biofilms are highly common in chronic wounds. To improve wound care treatment, a Janus-type antimicrobial dressing was created to eradicate biofilms in chronic wounds. The dressing consists of two layers: a top layer of electrospun nanofibers and a bottom layer of dissolvable microneedles. The dressings were tested on an ex vivo and in vivo model.

Non-Destructive Characterization Of Peripheral Arteries Using Intravascular Ultrasound, Colman Isaac Freel, Courtney Keiser, Majid Jadidi, Sylvie Sim, Yury Salkovskiy, Kaspars Maleckis, Anastasia Desyatova, Alexey Kamenskiy, Jason Mactaggart

Posters: 2021 Summer Undergraduate Research Program

Peripheral Artery Disease (PAD) is the chronic obstruction of blood flow to the extremities caused by plaque buildup. Poor circulation results in exertional pain, numbness, and weakness, and in severe cases, can manifest critical conditions, including gangrene and limb loss. PAD affects approximately 8.5 million Americans and costs the United States $21 billion annually in direct medical expenses. High expenditures are attributed to operation and intervention failures resulting in frequent need for revascularization. Treatment of PAD typically involves lifestyle/diet adjustments, bypass surgery, or angioplasty/stenting. Unfortunately, repeated limb deformation during locomotion often results in adverse repair device-artery interactions, which hinder the …

Systematic Review Of Preclinical Surgical Meshes For Hernia Repair, Andrew Hedstrom, Nathan Bills, Cynthia M. Schmidt, Mark A. Carlson

Posters: 2021 Summer Undergraduate Research Program

Hernia repair is one of the most common procedures performed around the world. Surgical mesh materials are used to reinforce hernia repairs and improve surgical outcomes. However, current commercial mesh materials produce problems such as infection, rejection, shrinkage, adhesion, and mechanical failure. These problems contribute to a high rate of hernia recurrence and mesh removal. With the number of hernias expected to rise in the future due to increases in obesity and diabetes, the need for more effective mesh materials is critical. This review aims to identify, evaluate, and summarize experimental surgical mesh materials used in the preclinical stages of …

Large-Scale Preclinical Swine Study Using Engineered Hemostatic Nanofiber Objects For The Treatment Of Junctional Hemorrhage; Nanofiber Microspheres For Directing Cellular Growth And Response, Justin S. Dyke, Johnson Vitharikunnil John, Jingwei Xie

Posters: 2021 Summer Undergraduate Research Program

This poster explores the use hemostatic nanofiber objects for treatment of non-compressible junctional hemorrhages by creating internal compression. Building upon previous studies changes were made to the method of producing nanofiber objects that is convertible to large-scale production. This poster also explores the use of nanofiber microspheres for tissue repair and regenerative applications. Two methods were explored in the use of electrospraying with and without adding air to the solution to adjust porosity of the microspheres. Both studies contained the use of electrospinning nanofibers and crosslinking of materials to adjust desired properties.

The Role Of Occupational Therapy With People Living With Epilepsy: A Scoping Review, Paige Peeples, Steven M. Gerardi

Summer 2021 Virtual OTD Capstone Symposium

Objective: The aim of this scoping review is to systematically examine and organize current literature describing the current roles of occupational therapists with people living with epilepsy, including assessments, interventions, and other behaviors. This will help identify current gaps in the literature to facilitate future research.

Methods: Using scoping review methodology, an electronic database search was conducted using the search terms “occupational therapy and epilepsy”. Data was extracted and charted independently by the investigator by way of finding themes and codes through analysis.

Results: The total number of studies included was 12. The primary methodology noted were case studies. …

Formation Of Microcages From A Collagen Mimetic Peptide Via Metal-Ligand Interactions, Jeremy Gleaton, Ryan W. Curtis, Jean Chmielewski

Department of Chemistry Faculty Publications

Here, the hierarchical assembly of a collagen mimetic peptide (CMP) displaying four bipyridine moieties is described. The CMP was capable of forming triple helices followed by self-assembly into disks and domes. Treatment of these disks and domes with metal ions such as Fe(II), Cu(II), Zn(II), Co(II), and Ru(III) triggered the formation of microcages, and micron-sized cup-like structures. Mechanistic studies suggest that the formation of the microcages proceeds from the disks and domes in a metal-dependent fashion. Fluorescently-labeled dextrans were encapsulated within the cages and displayed a time-dependent release using thermal conditions.

Bridge Design Between Axi Lite And Ahb Bus Protocol, Jaymin Patel, Yash Shah, Lili He

Faculty Research, Scholarly, and Creative Activity

Architecture of bridge model between AXI Lite and AHB for this paper were simulated using Synopsys VCS and DC in Verilog HDL. Bridge structure mainly comprises of arbitration techniques, control signals, multiplexing techniques for writing data signals and Decoder for reading data section. In this work, bridge model between AHB and AXI lite was simulated and characterized. The proposed model of bridge design provides efficient communication between on chip bus protocols like AXI and AHB on chip in the era of deep sub-micron technology where channel side is reduced as much as 5 nm.

Exploring Non-Functional Coupling Between Subsystems, Matt Pope

Theses and Dissertations

Many software systems depend on other systems to function correctly or are themselves composed of interdependent subsystems. In that context, behavioral changes in a dependency may have consequences for a dependent subsystem. This includes changes to non-functional properties such as latency or availability. In this paper we use the term non-functional coupling to mean the extent to which a subsystem is affected by changes to non-functional properties in a dependency. We argue that non-functional coupling has implications for the maintainability, reliability and performance of an overall system. We also explore the extent to which various engineering techniques used in interaction …

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering: News & Publications (2013-2023)

• Mechanics Course Sequence Review Sessions (Statics, Dynamics, Mechanics, Machine Design)

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• GS Achieves Foundry Education Foundation Certification

A Moment Of Opportunity: Strategies For Inclusive Economic Growth, Michelle Miller-Adams, Timothy J. Bartik, Brad J. Hershbein

Upjohn Institute Technical Reports

No abstract provided.

An Empirical Comparative Study On The Two Methods Of Eliciting Singers’ Emotions In Singing: Self-Imagination And Vr Training, Jin Zhang, Ziming Xu, Yueying Zhou, Pengpai Wang, Ping Fu, Xijia Xu, Daoqiang Zhang

Library Scholarship

Emotional singing can affect vocal performance and the audience’s engagement. Chinese universities use traditional training techniques for teaching theoretical and applied knowledge. Self-imagination is the predominant training method for emotional singing. Recently, virtual reality (VR) technologies have been applied in several fields for training purposes. In this empirical comparative study, a VR training task was implemented to elicit emotions from singers and further assist them with improving their emotional singing performance. The VR training method was compared against the traditional self-imagination method. By conducting a two-stage experiment, the two methods were compared in terms of emotions’ elicitation and emotional singing …

Inclusive Math And Science Spaces Through Professional Development: A Qualitative Study Focusing On Educator Views Of Multilingual Learners And Educator Identity, Helen Dick Brandon

Theses and Dissertations

This action research qualitative study focused on the role that targeted professional development has on shifting the ways in which middle school math and science educators view their culturally and linguistically diverse (CLD) students; in addition, this study focused on the role that professional development plays on shifting teacher identity. Through this study, four middle level math and science educators took part in a four month professional development opportunity that included interviews, questionnaires, video lessons, and focus groups. Through this experience, the educators shifted their views of CLD students to be more asset-based. When looking at the shifts in their …

Influence Of Academic Qualification On Librarians' Proficiency Of New Media Technologies In Selected University Libraries In North-Eastern Nigeria., Abbas Adamu Lamido Gora, Ahmed Baba Gombe, Zainab Mohammed Abdullahi, Ibrahim Mohammed

Library Philosophy and Practice (e-journal)

The study investigated the influence of academic qualification on librarians' proficiency of new media technologies in selected university libraries in North-Eastern Nigeria. The study was guided by two research questions and a null-hypothesis. Descriptive survey research design was adopted. The population of the study was 144 librarians from seven selected University libraries in North-Eastern Nigeria. Total enumeration was used in the study. Questionnaire was used as research instrument. Descriptive statistics of frequency counts, percentage, mean and standard deviation as well as inferential statistics of Pearson Chi-square (X2) were used in analysing the data. SPSS version 23.0 software was used for …

Mss0240. Smith-Buckingham Papers Finding Aid

Special Collections Finding Aids

The collection contains original and transcribed letters and fragments, essays, reminiscences, and other documents dating from the early 1800s to the 1970s. The nineteenth century items are predominately from the Neely and Pitser Miller families of Bolivar and Memphis, as well as the Jacob Smiths of Maine, Minnesota, and Tennessee. Twentieth century materials include an account by Hugh Evelyn Buckingham of his experiences as an artillery officer in France in 1918, and a few letters from Nash Buckingham, the well-known outdoorsman and writer.

View the collection

Ground Testing Of A Chip-Scale Atomic Clock For Maxwell Cubesat Flight Experiment, Luciana Schement, Caroline Dixon

Small Satellite Conference

This paper provides an overview of a flight experiment to observe the performance of a chip-scale atomic clock (CSAC) on a LEO cubesat. The results of this experiment will provide the basis for a realistic evaluation of the utility of the CSAC to support onboard position, navigation, and timing (PNT) applications for small satellites. The paper focuses on the goals and outcomes of ground testing performed on a CSAC in preparation for flight onboard the UNP-9 cubesat mission MAXWELL. The ground testing includes live sky testing, RF/GNSS simulator testing, and electromagnetic field testing.

An Analytical Approach To Modeling Spacecraft Potentials In Spice, Jason Powell

Small Satellite Conference

As the use of Langmuir probes on small satellites increases, so does the need to understand how spacecraft charging affects Langmuir Probe measurements. This paper explores the important relationship between probe and spacecraft surface area, and how it relates to the floating potential (or charge) on the spacecraft. Further, this paper discusses how a charged body’s interaction with the ionosphere can be modeled using custom circuit elements designed in SPICE. The SPICE models introduced are demonstrated with the SPORT spacecraft, a 6U mission that makes Langmuir probe measurements in concert with two electric field probes used to account for the …

A Versatile And Open-Source Radio Framework For The D3 Cubesat Mission, Carlos Carrasquillo

Small Satellite Conference

This paper details the design and implementation of the communications system for the Drag De-OrbitDevice (D3) CubeSat mission. The D3 mission aims to validate the effectiveness of a novel approach to aerodynamically-based orbital maneuvering and controlled re-entry. Using four deployable tape-spring booms that can be retracted to any intermediate length, the D3 can accurately modulate the ballistic coefficient profile of the CubeSat in low Earth orbit (LEO). To compute the necessary boom deployment and reproduce a desired trajectory, the guidance profile of the CubeSat must be actively generated, which itself is a very computationally intensive process. The guidance will therefore …