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The Effects Of Composition On The Structural Symmetry, Ionic Conductivity, And Stability Of Garnet-Type Li7la3zr2o12, Changlong Li

All Dissertations

Garnet-type LLZOs (Li7La3Zr2O12) with cubic crystal structures are solid-state high Li-ion conductive ceramics, which demand next-generation all-solid-state Li-ion batteries. This garnet group ceramics with high electrochemical performance has been dramatically investigated in recent decades on different aspects, including different doping strategies, novel synthesis for powders and sintering techniques for pellets, defect chemistry modeling, electrochemical performance enhancement, and many others.

This dissertation is centered on fundamentally understanding the composition, structure, thermodynamics of this garnet-type LLZO with various doping strategies. These topics cover general development of garnet-type LLZO in recent years (Chapter 1); Basic theoretical knowledge associated with the research in this …

Carbon Rich Polymer-Derived Ceramics: Processing, Characterization, And Properties, Michelle Greenough

All Dissertations

Polymer derived ceramics is an attractive route to make Si-based ceramics with high temperature stability in a broad range of physical forms. Partial thermal decomposition of hybrid Si- and C-based polymers allows for the creation of unique materials with attractive properties, such as high surface area, high electrical conductivity, and pores in nanometer range. However, investigations of these materials have been limited and are the focus of this research. The unique aspect of this work is the pyrolysis temperature which is at a low/intermediate temperature range of below 1000 °C. Several systems have been investigated to explore a broad range …

Mixed Conducting Composite Materials For Intermediate-Temperature Protonic Ceramic Fuel Cells, Zeyu Zhao

All Dissertations

Ionic conducting ceramics attracted much attention in their applications as electrolytes in many energy conversion, storage, and harvesting devices based on their high singular ionic conductivity (H+ or O2-). Within these applications, protonic ceramic fuel cells (PCFCs) show promising performance on electricity generation with high efficiency and low emission at intermediate temperatures. However, the sluggish oxygen reduction reaction (ORR) at the cathode side and the potential coking issue at the anode side are still the crucial stumbling stones to the further development of PCFCs. Utilizing materials with mixed conductivity, including co-ionic conductivity (H+ and O2-) and triple conductivity (H+, O2-, …

Security And Reliability Of Vehicular Networks And Autonomous Vehicle Applications Using Artificial Intelligence And Edge Computing In A Cyber-Physical Systems Environment, Md Zadid Khan

All Dissertations

The transportation system in the US is transforming into an intelligent cyber-physical-systems (CPS) through the inclusion of technology and digital infrastructure. One of the core components of the transportation CPS (TCPS) is connected and automated vehicles (CAV). Advancement in vehicular network technologies and vehicle automation is an important factor in the evolution of CAVs. Improving the security of in-vehicle networks and automated vehicle applications, and reliability of vehicle-to-everything (V2X) communication are critical areas that need further attention from the research community. In this dissertation, the author demonstrates methods and models to improve the security and reliability of CAV communication and …

Modeling Households’ Evacuation-Related First Decisions, Actual Evacuation Decision, Accommodations, And Destinations During Hurricane Matthew, Emmanuel Adjei

All Dissertations

Hurricane Matthew was a category five hurricane that affected coastal communities in Florida, Georgia, and South Carolina and resulted in significant damage to properties and loss of lives. This dissertation investigates households’ evacuation-related decisions during Hurricane Matthew (2016). Specifically, this study examines (a) households’ evacuation-related first decisions, (b) the effects of risk perception and perceived certainty about evacuation logistics on households’ evacuate/stay decisions, and (c) the influence of perceived certainty variables on households’ selection of destination and accommodations type. Data used for this study comes from a post-Hurricane Matthew survey data gathered from households in the Jacksonville Metropolitan Area of …

Exploring The Role Of Individual Differences In Function Structure Modeling: A Theory Building Approach, Apurva Rajesh Patel

All Dissertations

Functions are a critical concept in engineering that support problem clarification and early-stage conceptual design. Function modeling, like other early-stage design tools, relies on subjective inputs from designers and is influenced by individual differences in designers. While research on function modeling has investigated topics such as modeling representations, model construction techniques, model use for conceptual design, and modeling behaviors, the role of individual differences is largely unexplored. This research aims to investigate how cognitive attributes and other individual differences influence the function modeling process and outcomes. Due to limited insight available about the nature of the relationship between individual attributes …

An Assessment Of Thermal Barrier Coatings For The Low-Temperature Combustion Family: From Hcci To Gci, Ziming Yan

All Dissertations

Thermal barrier coatings (TBCs) reduce in-cylinder heat transfer losses and increase thermal efficiency. Beyond the efficiency improvement, many challenges associated with low-temperature combustion (LTC) could be potentially improved with TBC. Therefore, the investigation of the effects of TBC in LTC serves as the motivation of this thesis. The thesis includes both experimental and computational investigations, which are mainly divided four-fold. First, this dissertation experimentally demonstrated the feasibility and comprehensively investigated the effects of thick thermal barrier coatings on pure Homogeneous Charge Compression Ignition (HCCI) combustion (i.e., low residual and high compression ratio) with two different fuels (conventional gasoline and wet …

Multistage Stochastic Programming: Algorithms, Modelling And Applications, Murwan Siddig

All Dissertations

This dissertation comprises four di˙erent topics related to multistage stochastic program-ming (MSP) algorithms, modeling, and applications.

First, we extend the adaptive partition-based approach for solving two-stage stochastic programs with a fixed recourse matrix and a fixed cost vector to the MSP setting, where the stochastic process is assumed to be stage-wise independent. The proposed algorithms integrate the adaptive partition-based strategy with a popular approach for solving multistage stochastic programs, the stochastic dual dynamic programming (SDDP) algorithm, according to two main strategies. These two strategies are distinct from each other in the manner by which they refine the partitions during the …

Micro Scalable Graphene Oxide Productions Using Controlled Parameters In Bench Reactor, Carolina S. Andrade, Anna Paula Godoy, Marcos Antônio Gimenes Benega, Ricardo J. E. Andrade, Rafael Cardoso Andrade, Wellington Marcos Silva, Josué Marciano De Oliveira Cremonezzi, Waldemar Augusto De Almeida Macedo, Hélio Ribeiro, Jaime Taha-Tijerina

Manufacturing & Industrial Engineering Faculty Publications

The detailed study of graphene oxide (GO) synthesis by changing the graphite/oxidizing reagents mass ratios (mG/mROxi), provided GO nanosheets production with good yield, structural quality, and process savings. Three initial samples containing different amounts of graphite (3.0 g, 4.5 g, and 6.0 g) were produced using a bench reactor under strictly controlled conditions to guarantee the process reproducibility. The produced samples were analyzed by Raman spectroscopy, atomic force microscopy (AFM), x-ray diffraction (XDR), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR) and thermogravimetry (TGA) techniques. The results showed that the major GO product comprised of nanosheets containing between 1–5 layers, …

Genome-Wide Association Study Of Serum Metabolites In The African American Study Of Kidney Disease And Hypertension, Eugene P Rhee, Aditya Surapaneni, Pascal Schlosser, Yong Li, Anna Köttgen, Bing Yu, Morgan E Grams

Faculty, Staff and Student Publications

The genome-wide association study (GWAS) is a powerful means to study genetic determinants of disease traits and generate insights into disease pathophysiology. to date, few GWAS of circulating metabolite levels have been performed in African Americans with chronic kidney disease. Hypothesizing that novel genetic-metabolite associations may be identified in a unique population of African Americans with a lower glomerular filtration rate (GFR), we conducted a GWAS of 652 serum metabolites in 619 participants (mean measured glomerular filtration rate 45 mL/min/1.73m

Exploration Of Corridor-Based Tolling Strategies For Virginia’S Express Toll Lanes, Shanjiang Zhu, Mecit Cetin, Hong Yang, Olcay Sahin, Atabak Mardan

Civil & Environmental Engineering Faculty Publications

Virginia has invested significant resources in the development of express toll lanes (ETLs), which adjust toll rates dynamically based on the level of toll lane usage. A tool is needed to investigate the potential impact of the I-66 Outside-the-Beltway (OTB) ETLs on regional traffic patterns. This study developed a microscopic traffic simulation model in TransModeler to evaluate a set of corridor-based tolling strategies for the I-66 ETLs in NOVA. This model also considered the changes in vehicle occupancy, mode split, and departure time among travelers because of tolls based on locally collected data. An interactive map-based analyzer based on the …

2021 August, Morehead State University. Office Of Communications & Marketing.

Morehead State Press Release Archive, 1961 to the Present

Press releases for August of 2021.

On Aqueducts And Anxiety: Water Infrastructure, Ruination, And A Region-Scaled Anthropocene Imaginary, Sayd Randle

Research Collection College of Integrative Studies

This paper explores popular expectations for and meanings of the U.S. West's environmental future, as articulated through recent artistic representations of the Los Angeles's expansive water provision network. Weaving together material from participant observation and readings of creative works, I show how infrastructural imagery is used to index anxieties about a future of water scarcity. Presenting familiar, currently functional water infrastructures as ruins-in-the-making, these artists use the physical stuff of water provision networks to advance critiques of longstanding modes of development and the material basis of urban-rural relations in the U.S. West. Doing so, these imagined ruins draw the global-scale …

An Investigation Of The Impact Of Covid-19 Infection Control On Visual Art Installations In Hospitals With Pediatric Patients, Shannon Kimich

Electronic Theses and Dissertations

This study investigated the impact of COVID-19 infection control on visual artwork in pediatric hospitals and hospitals caring for pediatric patients. The study involved five hospitals in three southern America states and addressed visual artwork and art installations. The researcher administered an internet-based survey to participants in job functions related to hospital administration, environmental services, and project management across the facilities and received participation from 18 respondents. Additionally, telephone interviews were conducted with three participants with the job titles project manager/analyst, child-life specialist, and environmental services director. Survey questions were designed to examine visual art programs in selected children’s hospitals …

Effect Of Ultrasound Pressure On The Distribution Of Bovine Serum Albumin Delivered By Focused Ultrasound-Mediated Blood-Brain Barrier Opening In Cleared Mouse Brains, Yajie Liu

McKelvey School of Engineering Graduate Student Theses & Dissertations

Most common diagnosis and therapeutic methods have low effectiveness when used on brain diseases. The key obstacle is that the blood-brain barrier (BBB) prevents most drugs from entering the brain. Some strategies have been developed to improve the efficiency of drug delivery crossing BBB. Among all these strategies, focused ultrasound-mediated BBB opening (FUS-BBB Opening) stands out since it is noninvasive and can be located to the target area. Detailed studies are required on the distribution of drugs delivered by FUS-BBB opening and the effects of FUS parameters on the distribution. This thesis proposes a pipeline involving tissue clearing and lightsheet …

Faculty Handbook, Georgia Southern University

Faculty Handbooks

Faculty Handbook for Georgia Southern University for the 2021-2022 academic year. The Faculty Handbook is published online by the Office of the Vice President for Academic Affairs and archived in Digital Commons@Georgia Southern.

Cosm Diversity & Inclusion Newsletter, Georgia Southern University

College of Science & Mathematics: News & Publications (2012-2022)

Welcome

The Diversity & Inclusion newsletter is delivered monthly via email during the fall and spring semesters and is always available on the new COSM D&I webpage. Send contributions and suggestions to any of the COSM D&I Ambassadors listed at the bottom of this newsletter and on the webpage.

Rsif Ethiopia Country Report 2021, Regional Scholarship And Innovation Fund (Rsif)

Rsif Country Progress Reports

Ethiopia’s collaboration with RSIF: Ethiopia is a founding member of PASET. Ethiopia participated at the 5th PASET Forum and has expressed its intention to contribute to RSIF. The Minister of Science and Higher Education represents Ethiopia in the PASET Governing Council (GC), and the Director for Capacity Building, sits in the PASET Executive Board (EB). The potential of Ethiopia’s innovative expansion due to investment in RSIF is multiplied when leveraged by the funds through matching support from various donors, including the Government of Korea, international partner institutions and others. By contributing to RSIF, Ethiopia will benefit from joint resource mobilization …

Mrda-Mgfsnet: Network Based On A Multi-Rate Dilated Attention Mechanism And Multi-Granularity Feature Sharer For Image-Based Butterflies Fine-Grained Classification, Maopeng Li, Guoxiong Zhou, Weiwei Cai, Jiayong Li, Mingxuan Li, Mingfang He, Yahui Hu, Liujun Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Aiming at solving the problems of high background complexity of some butterfly images and the difficulty in identifying them caused by their small inter-class variance, we propose a new fine-grained butterfly classification architecture, called Network based on Multi-rate Dilated Attention Mechanism and Multi-granularity Feature Sharer (MRDA-MGFSNet). First, in this network, in order to effectively identify similar patterns between butterflies and suppress the information that is similar to the butterfly's features in the background but is invalid, a Multi-rate Dilated Attention Mechanism (MRDA) with a symmetrical structure which assigns different weights to channel and spatial features is designed. Second, fusing the …

It Isn't Easy Speaking Green: The Influence Of Moral Factors On The (Non-) Adoption Of Pro-Environmental Behaviors, Deferral, And Back Again, Alexi Elizabeth Lamm

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Climate change is one of the major issues humans face in the 21^st century. This decade is critical in shaping the future of Earth and the way humans live on it (IPCC, 2018). Changes in human behavior are necessary to mitigate and adapt to climate change. This series of studies explored factors important in communicating and implementing environmental behavior. The first study tested the effects of an online, interactive carbon calculator with moral interventions on three self-reported measures and one objective measure of behavior over a period of weeks. The interventions resulted in small changes in self-reported behavior and …

The Relationship Between Vitamin D Intake, Sun Exposure, Handgrip Strength And Hg Alc Levels In College-Age Adults, Janelle Melancon

Master's Theses

Vitamin D is known for its importance to bone health and calcium metabolism and plays a role in insulin resistance. Recent research has recognized its role in insulin secretion, inflammatory response, and adipose tissue changes as possible reasons for its association with insulin resistance and cardiovascular disease. The CDC (2019) reported that 20% of adolescents are now living with prediabetes. Most individuals with prediabetes progress to type 2 diabetes within ten years. Because many studies have focused on adults of all ages, it is important to research young adults. This study aimed to determine prevention efforts; therefore, the younger adult …

Predict Trend Of Unemployment Rate By Observing The Nasdaq Composite Index Using Hidden Markov Model, Li Liu

Master's Theses

In this paper, we present how to use Hidden Markov Models (HMM) to predict the change in Unemployment Rate. By observing the NASDAQ price difference, we will predict the Unemployment Rate will rise or fall in the next month using the Hidden Markov Model. We will use the NASDAQ price and the unemployment rate from 2016 to 2020 monthly data for this paper. When we check the relation between the NASDAQ price and the unemployment rate, we find out that whenever the NASDAQ price goes up, the unemployment rate will drop for a time. So we are interested in how …

The First-Year Experiences Of Women Engineering Majors At Community Colleges: A Phenomenological Study, Brandy Ann Robertson Naughton

Doctoral Dissertations and Projects

The purpose of this hermeneutic phenomenological study was to describe the lived experiences of women engineering majors who transitioned to community colleges and persisted to the second year. Guiding this study was Schlossberg’s transition theory as it explains the transition to first-year engineering student and Tinto’s theory of student departure. The study used purposeful, criterion sampling to identify the participants who met the following criteria: full- or part-time female engineering student who completed the first year of study, as defined by the completion of 30 credits, and persisted into the second year of study at a community college. Data were …

Effective Sermon Application In A Charlotte Exurb Baptist Church, David Keuss

Doctoral Dissertations and Projects

This thesis explores an improvement in expository sermon application using two technical tools added to the sermon divisions of sermon series messages. The background of applicational improvements is explored, the problem at Sandy Plains Baptist Church of Gastonia is outlined, and the solution employed. The problem is a spiritual comfort or plateau among members with previous life applications of sermons. The goal was to provide two new resources that would overcome the spiritual status quo in Sunday worship attendee’s lives. This method was tested utilizing Likert scale surveys, unpaired T-tests, and facilitator notations. The thesis project provides guidance to other …

Regeneration First, Simon J.D. Schillebeeckx, Ryan Knowles Merrill

Research Collection Lee Kong Chian School Of Business

30 years of "corporate sustainability" has left our earth in a dire state. Biodiversity loss, planetary fever, floods, wildfires, droughts, melting ice caps, dying corals… the list goes on. We need a new approach. I’m sure you heard about a carbon footprint. It is the sum of all the actions we take that have a negative impact on the planet. We consume electricity, we drive to work, we fly to our holiday destination, we waste food and plastic and so on. All these actions create a negative impact that can be expressed in CO2 equivalent. The more CO2 ends up …

Case Study: National Library Board Singapore: Delivering Cost-Effective Service Excellence Through Innovation And People, Jochen Wirtz, Thomas Menkhoff

Research Collection Lee Kong Chian School Of Business

The National Library Board (NLB) Singapore is a statutory board that managed to become a serial innovator. Its globally leading innovations in the library context include shelf-reading robots, and even entirely self-service libraries. NLB’s consistent focus on excellent service delivery reinforced its commitment to innovation. Key levers were effective strategic leadership, a smart innovation strategy that made heavy use of technology — such as app-delivered self-service technologies, crowdsourcing, and robotics — as well as a people-centric staff culture. NLB managed to co-create attractive libraries of the future together with different types of community members, such as volunteers and corporations, ushering …

Sustain Captures Category Learning, Recognition, And Hippocampal Activation In A Unidimensional Vs Information-Integration Task, L Dome, C Edmunds, A Wills

School of Psychology

No abstract provided.

'Peace Throughout The Oceans And Seas Of The World': British Maritime Strategic Thought And World Order, 1892-1919, Louis Halewood

School of Law, Humanities and Social Sciences

Prior to 1914, British strategic thinkers considered the question of how to maintain British world power in the twentieth century. They developed visions of co-operation at sea between not only Britain and the Dominions, but also other states in the international system. During the First World War, these ideas merged with plans for the League of Nations, which British policymakers envisaged as a tool for enforcing peace through the use of sea power. This article explores these ideas, providing a different interpretation of the origins of the League, and the maritime strategic thought of key individuals including Halford Mackinder.

Slow-Onset, Potent Inhibition Of Mandelate Racemase By 2-Formylphenylboronic Acid. An Unexpected Adduct Clasps The Catalytic Machinery, Colin D. Douglas, Lia Grandinetti, Nicole M. Easton, Oliver P. Kuehm, Joshua A. Hayden, Meghan C. Hamilton, Martin St. Maurice, Stephen L. Bearne

Biological Sciences Faculty Research and Publications

o-Carbonyl arylboronic acids such as 2-formylphenylboronic acid (2-FPBA) are employed in biocompatible conjugation reactions with the resulting iminoboronate adduct stabilized by an intramolecular N–B interaction. However, few studies have utilized these reagents as active site-directed enzyme inhibitors. We show that 2-FPBA is a potent reversible, slow-onset inhibitor of mandelate racemase (MR), an enzyme that has served as a valuable paradigm for understanding enzyme-catalyzed abstraction of an α-proton from a carbon acid substrate with a high pK_a. Kinetic analysis of the progress curves for the slow onset of inhibition of wild-type MR using a two-step kinetic mechanism …

Credit Card Security System And Fraud Detection Algorithm, Baker Al-Smadi

Doctoral Dissertations

Credit card fraud is one of the most critical threats affecting individuals and companies worldwide, particularly with the growing number of financial transactions involving credit cards every day. The most common threats are likely to come from database breaches and identity theft. All these threats threat put the security of financial transactions at severe risk and require a fundamental solution.

This dissertation aims to suggest a secure online payment system that significantly improves credit card security. Our system can be particularly resilient to potential cyber-attacks, unauthorized users, man-in-the-middle, and guessing attacks for credit card number generation or illegal financial activities …