Digital Commons Network^™

The Deep Bsde Method, Daniel Kovach

Masters Theses

"The curse of dimensionality is the non-linear growth in computing time as the dimension of a problem increases. Using the Deep Backwards Stochastic Differential Equation (Deep BSDE) method developed in [HJE18], I approximate the solution at an initial time to a one-dimensional diffusion equation. Although we only approximate a one-dimensional equation, this method extends well to higher dimensions because it overcomes the curse of dimensionality by evaluating the given partial differential equation along "random characteristics''. In addition to the implementation, I also present most of the mathematical theory needed to understand this method"-- Abstract, p. iii

High Strain Rate Analysis Of 3d Printed Concrete As Compared To Conventionally Cast Concrete, Weston Mcleod Thomsen

Masters Theses

"3D Printed Concrete (3DPC) is a developing method of construction that has advantages over conventional methods, including formwork reduction, complex geometry, and expedited construction. This technology has potential benefits for the military when considering the austere environments that forward operating bases are built in. This study aims to assess 3DPC applications in protective structures that protect critical assets from explosive blasts. These protective structures experience a high-strain rate response during blast loading of the structure, and the effects of this have yet to be analyzed in the literature concerning 3DPC. With the lack of prior research, the focus here will …

Open-Ended Hollow Coaxial Cable Resonance Sensing Via Permittivity Fluctuations For Applications To Exhaled Breath Health Monitoring, Peter Henry Holtmann

Masters Theses

"We report a pre-diagnostics breath analyzer based on the open-ended hollow coaxial cable resonator (OE-HCCR) to achieve real-time differentiation of healthy and compromised lung function through electromagnetic analysis of exhaled breath matter. A two-phase amplification scheme of electromagnetic signatures metered via the S11 phase curve offers high sensitivity to permittivity fluctuations in exposed airflow. The mathematical model of the breath analyzer is explained, followed by experimental validation of numerical findings from previous work. The collection of breath transient signals is performed through monitoring the reflected power magnitude and phase of the scattering parameter (S11) at the resonance frequency. Material fluctuations …

Investigation Of The Relationships Between Hydraulic, Physical, And Biological Soil Parameters At A Vineyard In Saint James, Missouri, Lyndsey Bennett

Masters Theses

"Soil is a living, dynamic system that performs vital functions such as crop production, organic matter decomposition, and the flow and transport of water. Given the pressures of food and in some locales water security, climate change, and sustainability, farmers, scientists, and other related specialists and stakeholders must have access to understandable soil health indicators as well as the soil hydraulic function parameters to maximize crop growth while maintaining soil health. Although biological and physical soil parameters are different, we aim to evaluate their relationship at the field scale. Hydraulic conductivity in the vadose zone may be especially important, as …

The Geodetic Strain Rates From Gnss In The North American-Carribean-Cocos Triple Junction In Guatemala And Implications For Seismic Hazard, Tanaya Kashyap

Masters Theses

"Geodetic velocity data are pivotal for deciphering seismic risks, providing initial constraints for crustal surface strain rates. Gaining an understanding of the 2D surface strain tensor across an entire area necessitates knowledge of the surface velocity field, yet geodetic data such as measurements from the Global Navigation Satellite System (GNSS) are dispersed across the Earth’s surface. In the current scope of study, we have employed various methodologies to estimate strain rates in Guatemala, utilizing GNSS velocity data and leveraging the open-source Python tool Strain_2D. Strain_2D facilitates the computation of strain rates through diverse methods applied to the same dataset and …

Cryptographic Algorithms, Cryptocurrencies, And A Predictive Model Of Bitcoin Value By Pls Regression, Paul Kenneth O'Connor

Masters Theses

"With the invention of Bitcoin in 2009, as a seemingly timed response to the ongoing financial crisis, the popularity of the cryptocurrency has since continued to grow. Just this year, the Security Exchange Commission approved Bitcoin for exchange traded funds, allowing major investment firms to begin product trading. With this approval, and during this very moment of writing, Bitcoin has entered a bull market and reached a record value of over 72,000 USD. In addition, the Bitcoin halving event in April of 2024 is expected to increase demand even further. It has been anticipated that Bitcoin and other cryptocurrencies will …

Computational Fluid Dynamics Analysis Of Thermal-Hydraulic Phenomena In Nuclear Reactor Systems, Mehedi Hasan Tusar

Masters Theses

"A computational analysis of thermal-hydraulic processes in nuclear reactor systems is performed, leveraging Computational Fluid Dynamics (CFD) to advance the design and ensure the safety of nuclear reactors. Divided into two primary sections, the initial part examines thermal-hydraulic behavior in the Replacement Research Reactor (RRR) operating at 20 megawatts and evaluates potential enhancements for the Missouri University of Science and Technology Reactor (MSTR) to operate at an increased capacity of 2 megawatts from the existing 0.2 megawatts. Detailed simulations reveal insights into flow characteristics, temperature distributions, and pressure drops, highlighting the effective use of realistic and porous media modeling techniques …

Protein Turnover Rate And Life History As An Explanation Of The Extreme Difference In Cost Of Biosynthesis In Cockroach Nymphs And Painted Lady Butterfly Larva, Kyara Nicole Holloway

Masters Theses

The cost of biosynthesis in painted lady caterpillars is far lower than that of a red runner cockroach. A promising explanation for this phenomenon is the protein turnover rate for the animal during biosynthesis and tissue maintenance. Previous research has shown that, per gram of body weight, the painted lady butterfly can synthesize a biomass using up to 15x less energy and resources than the cockroach, even under similar conditions. The resulting ratios, especially in respect to growth rate, show a wide disparity between species in such a manner that does support a protein synthesis and degradation rates as a …

Theoretical Modeling And Experimental Investigation Of Phase Selection During Rapid Solidification Of Alloys, Azeez Aremu Akinbo

Masters Theses

"A novel model, rooted in time-dependent nucleation theory, has been created to explore how rapid solidification affects the extended solubility in metal alloys. This model was used to forecast solubility concerning undercooling in multiple binary aluminum (Al) alloys, and its predictions for both eutectic and peritectic systems closely match experimental data. It was demonstrated that this developed model surpasses the T0 line method, which does not consider the kinetic aspects of nucleation. Furthermore, the model can be extended to ternary and multicomponent phases by assuming that the scarcest element or the slowest diffusing component restricts nucleation. Al-Cu and Al-Cr, vital …

Mandatory Anti-Bias Cle: A Serious Problem Deserves More Meaningful Response, Rima Sirota

Georgetown Law Faculty Publications and Other Works

This essay addresses the problematic convergence of two recent trends: (1) the expansion of jurisdictions requiring anti-bias training (ABT) as part of mandatory continuing legal education (CLE), and (2) the growing recognition among social scientists that such training, at least as currently practiced, is of limited effectiveness.

Forty-six American states require continuing legal education (CLE), and eleven of these states now require lawyer ABT as one facet of CLE requirements. I have previously criticized the mandatory CLE system because so little evidence supports the conclusion that it results in more competent lawyers. The central question tackled by this essay is …

Fears, Faith, And Facts In Environmental Law, William W. Buzbee

Georgetown Law Faculty Publications and Other Works

Environmental law has long been shaped by both the particular nature of environmental harms and by the actors and institutions that cause such harms or can address them. This nation’s environmental statutes remain far from perfect, and a comprehensive law tailored to the challenges of climate change is still elusive. Nonetheless, America’s environmental laws provide lofty, express protective purposes and findings about reasons for their enactment. They also clearly state health and environmental goals, provide tailored criteria for action, and utilize procedures and diverse regulatory tools that reflect nuanced choices.

But the news is far from good. Despite the ambitious …

Blinded By The Light: Resolving The Conflict Between Satellite Megaconstellations And Astronomy, David A. Koplow

Georgetown Law Faculty Publications and Other Works

The sudden emergence of large constellations of small satellites in low altitude orbits represents one of the most dramatic contemporary innovations in outer space. Promising low-cost, low-latency global communications and spectacular capacities for remote sensing of the Earth, these satellites will soon number in the tens of thousands, sponsored by diverse corporations and countries around the world. But this proliferation of spacecraft comes at a steep cost in unavoidable interference with ground-based astronomy: as the satellites overfly the observatories, they block the views of remote objects and phenomena, leaving obliterating white streaks on the collected imagery, and obscuring access to …

Towards An Effective Merger Review Policy: A Defence Of Rebuttable Structural Presumptions, Filippo Lancieri, Tommaso Valletti

Georgetown Law Faculty Publications and Other Works

We discuss the design of an effective merger review policy for the 21st century. We argue that the practice of the past decades is inadequate and propose a move towards much stronger rebuttable structural presumptions. These presumptions establish that all mergers above certain thresholds are illegal unless the merging parties can prove that merger-specific efficiencies will be shared with consumers and yield tangible welfare gains. These presumptions are grounded on solid economics and also acknowledge the real-world limitations in enforcement resources and information asymmetries between companies and regulators. We outline how to establish such presumptions in practice, defending the implementation …

Loper Bright In A Larger Interpretive Perspective: Is This Justice Scalia’S Court Anymore?, Victoria Frances Nourse

Georgetown Law Faculty Publications and Other Works

Loper Bright Enterprises v. Raimondo has left administrative lawyers agog: Could the Supreme Court really reverse the “goliath” known as Chevron deference? For those who study the Court’s interpretive landscape more broadly, however, Chevron reversal may not be as unexpected as administrative lawyers believe. This Article will look at Loper Bright by linking three notable interpretive developments: the major questions doctrine, Chevron skepticism, and strict constructions of statutory text. These developments share the same risk: the Court is imposing a new “clarity tax” on both Congress and administrative agencies. Having said this, others’ grave worries about changes in Chevron are …

A Descriptive Study Of The Perception Of Emerging Adults Aged 18-25 Years Toward Police Efficacy And Image In The United States, Jude Louis

Theses and Dissertations

The purpose of this study was to investigate the perceptions of emerging adults toward police efficacy and image. The study was descriptive, used quantitative methodology, and utilized a non-experimental design. Close-ended questions were used in an online format to survey emerging adults aged 18-25 years in the United States. The data was collected using the SurveyMonkey Audience, which was relatively cost-effective, able to gather information from the target audience within a short period of time, and efficient with any sample size. The study occurred over two months in 2024. Emerging adults in the United States aged 18-25 years irrespective of …

Spouse Violence In Case Of Police Officers In Puerto Rico: Violence In Police Families, Jorge Ismael Suarez

Theses and Dissertations

This applied dissertation was designed to explore the relationship between factors related to police work and whether these factors help predict domestic violence in a sample of officers of the Puerto Rico Police. The following factors were explored in this study: external burnout, alcohol abuse, department withdrawal, and authoritarian spillover. This study was based on a previous study by Johnson et al. (2005), which revealed that violence exposure and domestic violence among police officers are linked according to four mediation chains. The mediation chain was a model implemented by the authors to determine the influence of burnout, authoritarian spillover, alcohol …

Administrators’ Perceptions Of The Impact Of Restorative Practices On Discipline Referrals And Suspension Rates In A Rural Elementary School, Gregory W. Brown

Theses and Dissertations

The problem addressed in the study involved excessive out-of-school suspensions, which have been a major concern for public school educators for decades. The purpose of the study explored the perceptions of participants regarding the effects of implementing restorative practices on suspension rates at a rural elementary school.The qualitative phenomenology study used a purposive sample of 10 educators who interacted with students suspended for violating the school's code of conduct. Six kindergarten through Grade 5 teachers, two Grades 3–5 grade-level chairpersons, the Positive Behavioral Interventions and Support coordinator, and one administrator participated in the study. Utilizing case study approaches, this qualitative …

African American Parents And School-Based Parental Involvement At The Secondary Level, Mark A. Dykes

Theses and Dissertations

Parental involvement is a multifaceted construct that includes school-based, home-based, and academic socialization. School-based parental involvement in education has been positively associated with academic achievement for all students. However, educational leaders are challenged to get parents involved in school-based activities, such as the School Site Council, Parent Council, and Open Houses.

The purpose of this qualitative descriptive study is to examine the reasons why African American parents are not fully involved in the policymaking and organizational activities at the target secondary school. This study is guided by the combined conceptual frameworks of Critical Race Theory, the Hoover-Dempsey and Sandler framework, …

A Post-Pandemic Measurement Of The Required Soft Employability Skills For Business School Graduates, Sean O. Stallings

Theses and Dissertations

This non-experimental descriptive quantitative applied dissertation was designed to identify and analyze the soft employability skills desired by mid-Atlantic employers of business school graduates in a post-pandemic environment. The study evaluated alignment of the competencies possessed by business school graduates and the desired skills of employers. The study explored opportunities to guide change in the development of learning outcomes for business school undergraduates that were influenced by the effects of COVID-19 to ensure adequate postgraduation placement and overall effectiveness of business school graduates.

Workplace readiness or employability also included identifying new hires who had the full package that included hard …

Black Teachers, Black Students, And Cultural Brokering: Leveraging Positionality To Strengthen Academic Identity, Shakasha L. Stevenson

Theses and Dissertations

This study utilized a phenomenological photovoice approach to understand the lived experiences of veteran Black high school teachers. Black teachers are positioned to serve as cultural brokers to support the academic identity of Black students. The prevalence of symbolic violence in the Eurocentric curriculum and other curricular practices continues to hinder successful outcomes for Black students. The study leverages the experiences of Black teachers to understand how their positionalities influence their decision-making and pedagogical practices.

The literature review explored research on the social and political implications of Black education, Black identity development, cultural brokering, and academic identity. More specifically, the …

Should We Disaggregate Latino Youths Based On Ancestral Group When Examining Risk Factors Of Violent And Delinquent Behavior, Elvis G. Sevilla

Theses and Dissertations

Researchers frequently aggregate Latino subgroups during statistical analyses despite findings indicating that cultural distinctions within Latino subgroups have unintended hidden impacts on analyses. This study disaggregated the Latino sample to assess if Latino youth samples differ among subgroups (i.e., Mexicans/Mexican Americans, Cubans/Cuban Americans, Puerto Ricans, Central/South Americans, and other Latinos) who self-reported violent and nonviolent delinquent behavior. Also, this study used Sampson and Laub’s age-graded theory to investigate life-course characteristics that predicted violent and nonviolent delinquent behaviors. A two-step approach analysis determined the differences in violent and delinquent behaviors among Latino subgroups and then which life-course risk factors predicted the …

Campus Police Legitimacy And Campus Crime Reporting: Moderating Effects Of Academic Major, James Earl Lyons Ii

Theses and Dissertations

Investigating crimes on college campuses is a prevalent phenomenon that often requires student cooperation with campus police. Using the procedural justice theory’s process-based approach, this applied research examined the likelihood of students reporting campus crime based on their perceived legitimacy of campus police and whether the student’s academic major moderated the relationship. The study used a quantitative, non-experimental design employing non-probability sampling methods.

Procedural justice is a theoretical approach that explains cooperation with police as the result of interactions. The theory asserts that regardless of the outcome, when citizens perceive interactions with police as procedurally just and fair, they are …

Punitive Experiences: Perspectives Of School Discipline Among Black American Males, Joseph Martin King

Theses and Dissertations

Among student groups within American public schools to date, Black males continue to be one of the most marginalized student groups in America. In spite of all the documented research findings that describe the problem from a research, policy, and practice standpoint, and given the plethora of well-documented knowledge of structural patterns identified and labeled as zero-tolerance policies and/or the school-to-prison pipeline, in conjunction with school reform attempts, Black males remain the largest segment of students who are academically discouraged and disproportionally affected by discipline in American public schools. Among the abundance of academic literature that describes the academic marginalization …

A Study Of K-5 Teacher Perceptions Of Home Visits On Attitude, Belief, And Behavior, Dene E. Gainey

Theses and Dissertations

The purpose of the qualitative descriptive study was to explore teacher perceptions of attitudes, behaviors, and beliefs as it pertained to home visits. The body of research available prior to the study focused on parent appreciation and takeaways from home visit experiences and/or students’ achievement as it pertained to having experienced a teacher coming into their home environments. Specifically, the researcher wanted to understand how K-5 teachers perceived their attitudes, behaviors, and beliefs prior to conducting home visits, during home visits and after the home visits were completed.

Through semi-structured interviews, participants were asked a series of questions that were …

A Qualitative Descriptive Study Of The Perspectives Of Health Care Leaders Concerning The Implementation Of Telehealth, Gary Gerard Camille

Theses and Dissertations

The purpose of this qualitative descriptive study was to explore how healthcare leaders on the east coast United States described the role of implementing, the outer setting, inner setting, individual characteristics, and the process when implementing telehealth in a patient-centered care environment in hospitals and healthcare facilities.

The study used a qualitative method with a descriptive design to capture the descriptions of the participant’s experience during the implementation of telehealth in a patient centered care environment in different health care facilities in east coast of the United States. Due to the onset of the Covid-19 pandemic, the interview sessions and …

The Adolescent Community Reinforcement Approach With Contingency Management: Examining The Effectiveness Of Relapse Prevention Program For Adolescents, Gwendolyn Bullard

Theses and Dissertations

This applied dissertation was designed to examine the efficacy of the adolescent community reinforcement approach with and without contingency management to improve the lives of adolescents with substance use disorder in relapse prevention programs. Adolescents with substance use disorder do not have access to effective continuing care and relapse prevention in rural towns in the state of Georgia. There is no ongoing care for adolescents with substance use disorder that incorporates a comprehensive treatment plan that includes community reinforcement approaches along with contingency management.

Relying on a multi-element research design, the researcher investigated the interaction between the adolescent community reinforcement …

Middle School Mainstream Educators’ Perceptions Of Preparedness For Teaching English Language Learners, Jessica Lebron

Theses and Dissertations

This applied dissertation was crafted to investigate the perspectives of middle school educators concerning their preparedness to instruct English language learners (ELL), an expanding subgroup of students. Given that over half of the student population in the target school district communicates in languages other than English at home, there is a heightened emphasis on fostering language and cultural connections between educators and students. Despite this, a significant number of educators within the school expressed a sense of inadequacy in teaching ELL students. In response to these concerns, some educators proactively sought additional, more specialized professional development opportunities to enhance their …

A Qualitative Study: Sex Offenders’ Perceptions Of The State’S Sex Offender Registry, Ann Marie Elliott

Theses and Dissertations

Sex offender registries (SOR) were created because of gruesome crimes committed against minors and the vulnerable, and they serve as a punishment. Empirically, SORs have become more functional over the years, so providing accurate information should be fundamental. It is the topic of discussion in many conversations, specifically during holidays and events involving minors, and it is used for background searches and ongoing investigations. Consequently, society expects the information displayed to be precise. Inaccurate information can potentially be harmful, especially to sex offenders. Nevertheless, when SOR is mentioned, rightfully so, society, including law enforcement, immediately exhibits sympathetic emotions for the …

In Their Own Words: The Unique Perceptions Of Minority Encounters With Law Enforcement, Summer Louis

Theses and Dissertations

This study explores the perceptions of people of color who have experienced interactions with law enforcement during adulthood. Utilizing a qualitative approach, in-depth interviews were conducted with a purposive sample of 12 individuals of color. The findings illuminated various perceptions significantly influenced by personal experiences and community context. The most prominent themes identified by the majority of participants include: (1) frequency of police encounters; (2) personal experiences with law enforcement; (3) negative experiences; (4) racial profiling; (5) police misconduct or mistreatment; (6) police use of force and excessive force; (7) contributing factors to these experiences; (8) perceptions of law enforcement …

Pressure Points: A Quantitative Study Of Young Adults Perception Of Police Officers, Yasmean Talas

Theses and Dissertations

This study aimed to quantify factors contributing to young adults' perceptions of law enforcement based on their experiences and exchanges with police. Data were collected via an online survey from young adults to assess variables such as peer influence, familial influence, social media impact, police interactions, and perceptions of law enforcement (POPS).

On average, participants exhibited neutral perceptions of law enforcement. The analyses revealed significant relationships between family influence, social media impact, police interactions, and POPS scores. Specifically, family and police interactions showed significantly positive associations with POPS scores, indicating that strong family bonds and positive police interactions tend to …