Digital Commons Network^™

Surficial Geologic Map Of The Bowling Green North 7.5-Minute Quadrangle, Warren County, Kentucky, Meredith Swallom, Matthew Massey, Wes Buchanan, Bailee Nicole Hodelka, Hannah Hayes, Charles Wells Iii, Emily Morris

Contract Reports--KGS

The Bowling Green North 7.5-minute quadrangle is located in Warren County immediately north of Bowling Green, Kentucky. Regionally, the quadrangle includes parts of the Pennyroyal and Mammoth Cave plateau, both within the Mississippian Plateaus physiographic region (McDowell, 1986). The Dripping Springs escarpment, which separates the lower-elevation Pennyroyal from the higher-elevation Mammoth Cave plateau is highly dissected in the quadrangle. Topography in the Pennyroyal is characterized by pervasive sinkhole development across the low-relief Pennyroyal, which is mostly underlain by the Mississippian St. Louis Limestone, Ste. Genevieve Limestone, and Girkin Formation (Shawe, 1963). Higher-relief topography is restricted to the slopes of the …

Paschen-Line Constraints On Dust Attenuation And Star Formation At Z ∼ 1–3 With Jwst/ Nirspec, Naveen Reddy, Michael W. Topping, Ryan L. Sanders, Alice E. Shapley, Gabriel B. Brammer

Physics and Astronomy Faculty Publications

We use medium-resolution JWST/NIRSpec observations from the Cosmic Evolution Early Release Science Survey to place the first constraints on dust attenuation and star formation based on Paschen lines for a sizable sample of 63 galaxies at redshifts z = 1.0-3.1. Our analysis indicates strong correlations between the Balmer decrement, Hα/Hβ, and line ratios that include Paschen lines (i.e., Paα/Hβ, Paβ/Hβ, and the Paschen decrement, Paα/Paβ), suggesting that the former is sensitive to the overall dust obscuration toward H ii regions in high-redshift galaxies. The line ratios are used to derive nebular reddening, E(B − V)_neb, and star formation …

Assessing Compressed Air Energy Storage (Caes) Potential In Kentucky To Augment Energy Production From Renewable Resources, J Richard Bowersox, John B. Hickman

Report of Investigations--KGS

Fossil fuel power plants in Kentucky have some of the highest emissions of greenhouse gasses in the United States. One potential strategy for mitigating greenhouse gasses from electric power generation is the co-installation of Compressed Air Energy Storage (CAES) and a renewable source such as photovoltaic solar electricity generation (PV solar generation). CAES with complementary co-installed PV solar generation enhances stand-alone PV solar generation because CAES power is available at night.

CAES, however, requires both a site where large volumes of compressed air can be stored in the subsurface, and a heat source to prepare the stored air prior to …

Fostering Reading: Supporting Foster Children Through Virtual Learning, Evette Harrell, Leah Washburn-Moses

Mid-Western Educational Researcher

Professional literature presents evidence that foster care agencies, foster parents, and educators are unprepared to meet the distinctive educational needs of foster youth. Although there is a general lack of evidence on specific interventions developed for foster youth, some studies have addressed the impact of tutoring. This paper studies the impact of a pilot program that paired 15 teacher candidates with 15 foster youth for virtual reading tutoring as part of a college course. Data were collected from youth, parents, and teacher candidates through surveys and focus groups. The results of this study suggested that the tutoring relationship produced several …

Aclp - Updated Overview Of Iija Digital Equity Grant Programs - March 2023, New York Law School

Reports and Resources

No abstract provided.

What The Judge Ate For Breakfast: Reasonable Consumer Challenges In Misleading Food Labeling Claims, Jessica Guarino, Nabilah Nathani, A. Bryan Endres

Loyola Consumer Law Review

Food, being an established aspect of global human culture and history, occupies a unique role in contemporary society. Given the massive market available for packaged and processed food, companies have taken deceptive marketing to new heights, resulting in a flurry of consumer litigation. The dominant test for -evaluating the scope of these cases is the reasonable consumer standard, an amorphous assessment which requires a probability that a majority of the general public or targeted consumers would be misled by said deceptive marketing. By analyzing state and federal consumer protection statutes, landmark cases, and elements of human and cultural psychology, the …

Healthwashing: Corporate Communication Strategies In A Legal Gray Zone, Felix Delerm, Anna Galmiche, Melanie Levy

Loyola Consumer Law Review

In an age of rising prevalence of non-communicable diseases, transnational companies of the tobacco, alcohol, and food industries wash their risk-creating commercial activities and unhealthy products and incidentally mislead consumers. This paper examines industries' quest for legitimacy through elaborate communication strategies. It conceptualizes the practice of healthwashing as a new form of a commercial determinant of health, revealing the inherent tension between commercial and public health objectives. Healthwashing consists of deceptive, multi-level communication strategies, including labeling and advertising, that trick consumers into believing they support companies whose practices align with their values. The paper is the first to present an …

Mechanism Of Pth Ca2+ Sensing On G-Protein Interactions With Pth1r, Difei Jiang

Lawrence University Honors Projects

Parathyroid hormone 1 receptor (PTH1R) is a family-B GPCR that plays a crucial role in bone remodeling. Previous studies show extracellular Ca2+ is a positive allosteric modulator for one PTH1R ligand, parathyroid hormone (PTH), which is approved by US FDA to treat severe osteoporosis. Moreover, PTH residues E19 & E22 have shown to be involved in Ca2+ sensing. However, the effects of PTH Ca2+ sensing on intracellular G-protein binding are unknown. Here, we used FRET-based SPASM sensors to study the interaction between PTH1R and different Ga peptides. SPASM sensors, which are isolated in native HEK293T membranes through optimized protocol, contain …

Explicit Chebyshev Petrov–Galerkin Scheme For Time-Fractional Fourth-Order Uniform Euler–Bernoulli Pinned–Pinned Beam Equation, Mohamed Moustafa, Youssri Hassan Youssri, Ahmed Gamal Atta

Faculty Journal Articles

No abstract provided.

Machine Learning-Based Uplink Scheduling Approaches For Mixed Traffic In Cellular Systems, Mohamed W. Nomeir, Yasser Gadallah, Karim G. Seddik

Faculty Journal Articles

No abstract provided.

Investigating Shallow Neural Networks For Orbit Propagation Deployed On Spaceflight-Like Hardware, Hunter Quebedeaux

Graduate Thesis and Dissertation 2023-2024

Orbit propagation is the backbone of many problems in the space domain, such as uncertainty quantification, trajectory optimization, and guidance, navigation, and control of on orbit vehicles. Many of these techniques can rely on millions of orbit propagations, slowing computation, especially evident on low-powered satellite hardware. Past research has relied on the use of lookup tables or data streaming to enable on orbit solutions. These solutions prove inaccurate or ineffective when communication is interrupted. In this work, we introduce the use of physics-informed neural networks (PINNs) for orbit propagation to achieve fast and accurate on-board solutions, accelerated by GPU hardware …

Thermal Management Strategies For Hypersonic Flight: Supercritical Co2 Jet Impingement Cooling Investigation For Leading Edge, Manoj Prabakar Sargunaraj

Graduate Thesis and Dissertation 2023-2024

This study addresses the critical need for effective thermal management in hypersonic vehicles facing intense heat at their leading edge due to high enthalpy flow. The objective is to propose an active impingement cooling system that ensures the structural stability and performance of these vehicles. This dissertation presents an in-depth exploration of the numerical simulations conducted on the hypersonic leading edge, focusing on a 3mm radius with active cooling utilizing supercritical carbon dioxide (sCO2) as the coolant. The research incorporates conjugate simulations that merge external hypersonic flow and sCO2 active cooling. Utilizing a thermodynamic non-equilibrium two-temperature model and various chemical …

Control Of The Spar-Buoy Based Wind Turbine Floating Platform Through Mooring Line Actuation, Tajnuba Hasan

Graduate Thesis and Dissertation 2023-2024

This thesis presents an innovative approach to enhance the stability of floating offshore wind turbine (FOWT) platform through mooring actuation. First, an OC3- Hywind spar-buoy floating platform is modeled utilizing the Control-oriented, Reconfigurable, and Acausal Floating Turbine Simulator (CRAFTS) with a specific focus on predicting hydrodynamic and mooring line loads while intentionally excluding consideration of aerodynamic forces. The accuracy of this model is validated against the industry standard OpenFAST simulator through various test cases. The central objective of this study revolves around achieving robust stabilization of the spar buoy platform, primarily focusing on X-Z symmetric planar motions, including surge, pitch, …

The Impact Of Education On Reducing Poverty In South Asia, Rooppreet Kaur Sohal-Bagri

CGU Theses & Dissertations

This dissertation examines the relationship between primary, secondary education attainment and poverty in South Asia. The countries of examination include India, Pakistan, Sri Lanka, Bangladesh, Nepal, Bhutan, Afghanistan, and Maldives. The primary function of this research is to determine if primary and secondary education attainment of peoples has an impact on being associated with reducing poverty. To accomplish and to test this goal, I have used fixed effects regression analysis to examine the following research questions: Does education expansion (primary, secondary) reduce poverty in South Asia? Does education expansion (primary, secondary) reduce poverty for women in South Asia? This first …

Longitudinal Effects Of Prenatal Teratogen Exposure On Executive Function And Academic Outcomes, Dawn Michele Moore

CGU Theses & Dissertations

The healthy development of executive function in adolescents is essential for controlling attention and behavior, especially as children confront the challenges associated with puberty, social situations, parental pressures, academic pursuits, and the transition to adulthood. For children prenatally exposed to teratogenic substances (i.e., certain prescription medications, maternal infections or conditions, alcohol, tobacco, etc.), higher-order cognitive skills may be compromised, resulting in an increased risk of delayed developmental functioning, deficits in cognitive and executive functioning, and poorer academic outcomes. Research findings suggest that even low-to-moderate levels of alcohol and/or tobacco use during pregnancy are associated with poorer academic performance, lower IQ …

Lattice Extensions And Zeros Of Multilinear Polynomials, Maxwell Forst

CGU Theses & Dissertations

We treat several problems related to the existence of lattice extensions preserving certain geometric properties and small-height zeros of various multilinear polynomials. An extension of a Euclidean lattice $L_1$ is a lattice $L_2$ of higher rank containing $L_1$ so that the intersection of $L_2$ with the subspace spanned by $L_1$ is equal to $L_1$. Our first result provides a counting estimate on the number of ways a primitive collection of vectors in a lattice can be extended to a basis for this lattice. Next, we discuss the existence of lattice extensions with controlled determinant, successive minima and covering radius. In …

The Effect Of Age, Syntax Complexity, And Cognitive Ability On The Rate Of Semantic Illusions, Sara Anne Goring

CGU Theses & Dissertations

Semantic illusions are recognition errors that occur when an individual fails to notice that information contradicts their prior knowledge (Barton & Sanford, 1993; Erickson & Mattson, 1981). For example, after hearing the question, “If a plane crashes while flying over state lines, where should the survivors be buried?” many start to consider the legality or appropriateness of the scenario despite knowing “survivors” should not be buried. Having more knowledge does not necessarily prevent individuals from overlooking illusory information/misinformation. Older adults tend to have greater crystallized intelligence than young adults, yet these age groups appear to detect illusory information at equivalent …

On The Pursuit Of Developer Happiness: Webcam-Based Eye Tracking And Affect Recognition In The Ide, Tamsin Rogers

Honors Theses

Recent research highlights the viability of webcam-based eye tracking as a low-cost alternative to dedicated remote eye trackers. Simultaneously, research shows the importance of understanding emotions of software developers, where it was found that emotions have significant effects on productivity, code quality, and team dynamics. In this paper, we present our work towards an integrated eye-tracking and affect recognition tool for use during software development. This combined approach could enhance our understanding of software development by combining information about the code developers are looking at, along with the emotions they experience. The presented tool utilizes an unmodified webcam to capture …

The Lie-Brary Of Congress: Misinformation’S Grip On The American Legislative Process, Caleb Bitting

Honors Theses

This thesis investigates the influence of misinformation on the policy-making pro- cess by examining its temporal relationship with congressional speech on the floor of Congress. Through the application of Granger causality tests, I aim to determine the extent to which misinformation permeates political discourse and affects representatives from both political parties. My findings reveal that misinformation drives congressional speech on certain issues, and it appears to have an asymmetrical impact on Republicans and Democrats. While not set up to answer the question about a false dichotomy, my thesis hints that Republicans spread significantly more systems-based misinformation than their Democratic counterparts.

Finding The Common Denominator: Understanding The Shared Experiences Of Female Math Majors, Abigail R. Rosenbaum

Honors Theses

Despite efforts to increase gender diversity in STEM fields, women remain underrepresented in mathematics, especially in advanced academic and research positions. This study aimed to explore the experiences of female math majors as they attempt to navigate this male-dominated space. Through qualitative interviews with seven female math majors, two female math professors, and a focus group with education majors at Woodbridge College, small liberal arts college in the United States, several common themes were identified that define the experiences of female math majors. The findings suggest that math is held at an elevated status in society and that there is …

Geology, Uranium, And Apartheid: South Africa’S Nuclear Program And The International Politics Of The Cold War, Andy Rightmire

Honors Theses

This paper examines the history of mining and uranium and its importance in South Africa’s nuclear history. It begins with the development of minable mineral deposits in South Africa through geologic processes and ends with the South African signing of the Non-Proliferation Treaty (NPT). The paper explores the intermittent period between creating the Atomic Energy Board and developing South Africa’s energy program through assistance from the United States and France. As the apartheid government brought sanctions to South Africa, the government began considering nuclear weapons through a different lens to project power. South Africa slid towards isolation under sanctions from …

Elliptic Curves Over Finite Fields, Christopher S. Calger

Honors Theses

The goal of this thesis is to give an expository report on elliptic curves over finite fields. We begin by giving an overview of the necessary background in algebraic geometry to understand the definition of an elliptic curve. We then explore the general theory of elliptic curves over arbitrary fields, such as the group structure, isogenies, and the endomorphism ring. We then study elliptic curves over finite fields. We focus on the number of F_q-rational solutions, Tate modules, supersingular curves, and applications to elliptic curves over Q. In particular, we approach the topic largely through the use …

Tracing North Atlantic Continental Erosion Events During The Mid-Pleistocene Transition, Cecilia T. Bowe

Honors Theses

The Mid-Pleistocene Transition (MPT), which occurred between 1.2 and 0.7 Mya, is characterized by changes in the periodicity and intensity of glacial-interglacial cycles. Early research into this event found that it was not triggered by changes in orbital forcing, but rather by internal climate processes. Previous studies have constrained a probable two-step mechanism, in which erosion of regolith under ice sheets increased glacial volumes and contributed to increased carbon sequestration in the Southern Ocean. Additional research has built on this, suggesting that increased glacial erosion of cratons surrounding the North Atlantic preceded a major weakening of the Atlantic Meridional Overturning …

Complexities Of Community Consultation In Chile's Lithium Industry, Isabella R. Whelan

Honors Theses

Echoed by November’s COP27 in Egypt, the climate crisis has become an increasingly pressing and global issue, with the need to move away from fossil fuels more urgent than ever. In attempts to decarbonize the global economy, many countries and companies have turned to electrification –particularly within the transportation sector, one of today’s largest contributors of greenhouse gasses. A crucial component of energy storage and batteries is lithium, now considered a “critical mineral.” Demand for lithium has skyrocketed in recent years and is only expected to continue growing. More than fifty percent of the world’s lithium supply is found within …

Detecting High-Lying Rydberg States Using Two-Step Electromagnetically Induced Transparency And Frequency Modulation Spectroscopy Techniques, Kate Jensen

Honors Theses

Resonant optical excitation of high-lying Rydberg states in room temperature 85Rb was investigated using light from two homemade external cavity diode lasers (ECDL). This was done using a ladder schema of the Electromagnetically Induced Transparency (EIT) technique. The approximate EIT wavelengths used were 780 nm (the probe beam) to provide step-wise excitation of valence rubidium electrons from the 5S1/2 → 5P3/2 tran- sition, and then 482 nm (the coupling beam) to excite from the 5P3/2 state to a high-lying Rydberg nD state with an orbital angular momentum = 2. Successful excitation of the Rydberg states was observed using Frequency Modulation …

Trends In Cyanotoxin Production Potential In China Lake: An Edna Analysis Of Microcystis And Dolichospermum And The Environmental Drivers Of Cyanotoxin Production, Gennifer M. Rubin

Honors Theses

Episodes of cyano-harmful algal blooms (cyano-HABs) are hypothesized to be exacerbated by the effects of climate change. However, the dynamics of the interactions between elements of climate change and toxigenic cyanobacteria proliferation are not well defined. China Lake is the drinking water source for 7 municipalities in the Kennebec County and is one of many lakes in central Maine that has been subjected to high levels of cyano-HABs and microcystin toxin contamination in recent years. Monitoring the toxicity of these blooms in relation to various aspects of climate change may lead to identification of the major drivers of microcystin production …

Aircraft Leasing—How To Comply With The Regulations And What Happens When You Don’T, David T. Norton, Gregory J. Reigel

Journal of Air Law and Commerce

The Federal Aviation Administration’s (FAA) increased emphasis on investigating improper leasing/illegal charter presents a challenge for aircraft operators. Understanding the regulatory requirements related to aircraft leasing is critical for operators to ensure their aircraft operations are compliant. Equally important is the need for aircraft operators to understand how the FAA exercises its oversight when it investigates alleged improper leasing/illegal charter operations, the consequences to which an aircraft operator may be subject in the event of non-compliance, and how an operator who is the target of such an investigation may respond to and/or work with the FAA to successfully resolve the …

Production Planning In The Context Of Industry 4.0 With Focus On Efficient Job Allocation & Workers' Real-Time Status, Abdullah Mohammed Albassam

Doctoral Dissertations - College of Engineering

"This research is focused on developing job assignment models in the context of I4.0 and has considered both workers’ physiological status and the skills required to achieve the production goals. The ultimate goal of the proposed models is to maximize productivity by matching operations tasks to workers with different required skills and various skill levels. This study also considers workers' performance indicator which is predicted by machine learning models using workers’ physiology measurement. The assignment model could provide promising results in moving toward real-time application of workers’ physiological status in order to better assign production tasks and maximize production value."

Using Ml Algorithms To Predict Real Estate Units Valuations In Ajman, Heba Al Yazouri

Theses

This project applies machine learning algorithms to predict the real estate unit’s values in the emirates of Ajman. Adopting machine learning techniques to predict real estate unit prices helps us produce more accurate valuations. It allows us to use historical data that can’t be used in traditional valuation techniques.

Datasets from the Department of Land & Real Estate were used to run an exploratory analysis to explore the most critical factors influencing real estate unit prices in Ajman. It shows that the unit area is the most significant factor affecting Ajman's real estate unit prices. It also shows how the …

Effect Of Different Nanoparticles Spp Grating On Gaas Pin Photodetector Performance, Nada Abdelaziz, Eman Abdelhalim, Waleed M. Gaballah, Ahmed S. Samra

Mansoura Engineering Journal

GaAs is currently one of these compound semiconductors' most preferred options for use in photodetector and photovoltaic applications as its increased mobility of electron and states density, in addition to its lower temperature coefficient when compared to silicon [Si]. Different metallic concerning wavelength of light and nanostructures geometry, subwavelength slit structures have plasmonic impacts and could develop a high light intensity region. All of frequencies within the spectrum of interior visible are absorbed inside the bonds, and as a result of their empty states of electron, they can move across the metal by electron transition. In this work, GaAs PIN …