Digital Commons Network^™

Modeling Of Power Distrubition Network (Pdn) Noise Coupling Induced Clock Phase Noise, Zhekun Peng, Junyong Park, Chaofeng Li, Joey Stecher, Srinivas Venkataraman, Xu Wang, Granthana Rangaswamy, Donghyun Kim

Electrical and Computer Engineering Faculty Research & Creative Works

Phase noise analysis is important to clock design. Noise sources of spurs shown on the phase noise result are challenging to find out due to the unknown source locations and coupling mechanisms. Noise from power distribution network (PDN) is one of the most troublesome sources. A behavioral modeling methodology is proposed to simulate the clock phase noise induced by PDN noise coupling for two different mechanisms: PDN-to-clock additive coupling and PDN-to-PDN up-conversion modulation. The thermal noise and 1/f flicker noise are simplified to provide a straightforward view of spur level. The model can be applied to both single-ended clock and …

Not Just Bony Fish: All Nonmammalian And Nonavian Animals Are Neglected In Both Welfare And General Research, Jennifer A. Mather Ph.D.

Animal Sentience

The lack of research on fish welfare highlighted by Oldfield & Bonano (2024) is only part of a more general problem: a relative neglect of animals other than mammals and birds. The causes are our lack of knowledge, our negative view of what we consider to be “lower” animals and our underestimation of their intelligence and sensitivity. Our estimation will increase as our knowledge increases. As a broader view spreads to the public through the media, it should gradually increase the demand to expand both research and welfare, especially beyond mammals and birds.

Production Of Glass-To-Metal Seals Using Additive Manufacturing Techniques, Aaron Read

Masters Theses

"Glass-to-metal (GtM) seals are hermetic barriers between glass and metal components, often used in the electronic and vacuum industries. Creating the seals traditionally requires heating all the components to the glass melting temperature, where the glass will flow and bond to the metal. Due to the manufacturing constraints of the individual components and sealing conditions there are geometric and material restrictions. Additive manufacturing techniques were used to make GtM seals to reduce these restrictions.

Hermetic, single pin seals were produced using printed metal shells, by selective laser melting (SLM), and digital light processing (DLP) printed glass preforms. Glass preforms were …

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 …

Addressing The Negative Externalities Of Trade: Flanking Policies And The Role Of Package Treaties, Gregory Shaffer

Georgetown Law Faculty Publications and Other Works

This article examines the rationales for addressing sustainability and social inclusion in trade policy and the tradeoffs among imperfect institutional choices in doing so through “flanking policies.” It examines three types of negative spillovers or externalities implicated by trade: material, moral, and social/political. Part I defines terms and sets forth the argument. Part II typologizes the three categories of negative externalities and then highlights the challenges posed for flanking measures given the reciprocal nature of externalities. It respectively addresses environmental harms and labor and social inclusion concerns. Part III assesses different institutional choices for addressing negative externalities, dividing them between …

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 …

Shades Of Service: Navigating Racial Diversity, Mental Health, And Occupational Stress Among Black Police Officers, Manina Jeudy

Theses and Dissertations

This study was conducted to learn about the unique challenges Black police officers face by exploring their lived experiences. This study looked at how these current and retired Black police officers navigate racial diversity, handle occupational stress and how their mental health is affected. The research was prompted by the lack of existing literature that focuses specifically on the lived experiences of Black police officers, as most studies of policing do not address this population in depth. Through Zoom interviews with a small group of officers, this study revealed their struggles at work and in their personal lives. By sharing …

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 …

A Phenomenological Study On University Students’ Perceptions And Attitudes Of The Effectiveness Of Mobile Apps On Communicative Competence, Leveth Jackson

Theses and Dissertations

This phenomenological study is focused on understanding how university students who are learning English as a foreign language (EFL) perceive and experience using mobile application on their speaking abilities. The primary goal was to examine the perception and attitudes of EFL learners towards using mobile apps for independent English-speaking practice and creating a customized learning experience outside of the classroom.

The researcher also investigated the participants’ views on the challenges and advantages of incorporating mobile apps into university speaking courses. The findings of this investigation may inform language educators at universities on the potential benefits of using mobile apps in …

Diversidad De Enfoques Del Liderazgo Transformacional En Instituciones Educativas: Una Revisión Sistemática, Néstor Amado Cárdenas

Theses and Dissertations

El liderazgo transformacional por la amplitud en su definición ha sido hasta la fecha uno de los estilos más discutidos o investigados a nivel mundial, tanto en el ámbito académico como empresarial. Originalmente concebido como producto de la influencia que el líder ejerce sobre sus seguidores, muchos autores amplían esta idea a otra en la que este estilo de liderazgo es producto de diversos factores aledaños al de la influencia del líder como las cualidades del líder, la estructura de la organización o prácticas organizacionales, la cultura imperante tanto dentro como fuera de la misma, o hasta en la sociedad …

Percepción Sobre Los Factores Que Inciden En La Utilización De La Plataforma De Microsoft Teams En Tiempos De Pandemia, Jessica Rosa Domenech

Theses and Dissertations

El diseño de investigación fue de naturaleza exploratorio con un enfoque fenomenológico correspondiente al paradigma cualitativo. Se utilizó la entrevista en profundidad para obtener la información. Los hallazgos relevantes demostraron que Los factores internos que incidieron en el uso del Microsoft Team incluyeron la disposición y competencia tecnológica de los maestros, su nivel de familiaridad con la plataforma y su capacidad para integrarla en su metodología de enseñanza. Los factores externos, la disponibilidad de recursos tecnológicos y acceso a Internet en las escuelas y hogares de los estudiantes es un aspecto importante que puede influir en la utilización de TEAMS. …

El Impacto De La Herramienta Teams En Los Maestros Como Medio De Enseñanza Ante Un Evento Pandémico, Jessica M. Rivera Figueroa

Theses and Dissertations

La herramienta de Microsoft Teams demuestra ser una completa y efectiva en el desarrollo de clases virtuales sincrónicas y asincrónicas ante una pandemia. La accesibilidad permitió la continuidad de la educación en el Departamento de Educación de Puerto Rico. Dicho proceso trajo consigo muchas incógnitas para el uso efectivo de la herramienta a pesar de adiestramientos y asistencias.

El propósito del estudio fue identificar el impacto de la herramienta Teams en los maestros como medio de enseñanza durante la pandemia para mejorar su uso en el proceso educativo y que se logre un uso efectivo en todas las materias de …

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 …

Victim Advocates' Experiences In The Provision Of Domestic Violence Services For Jewish Women, Michael Sue Jenefsky

Theses and Dissertations

Domestic violence is a serious, dangerous global epidemic and does not discriminate. Domestic violence has no limitations happening in all communities, religions, and cultures. There are many types of abuse, and it is not always physical; however, the underlying threat of violence is perceived by victims. Abusers use manipulative and coercive tactics to gain and maintain power and control of victims. It is deliberate and a choice. Feelings of shame, guilt, blame, failure, helplessness, and being trapped with no means to escape are prevalent among victims. Jewish women have specific feelings and fears that are associated with halakha, Jewish law, …

Examining Digital Hostility Against Black Women: A Thematic Analysis Of The Black Manosphere On Twitter, Nekea Sanders

Theses and Dissertations

The Manosphere is a collective of powerfully influential men who create and control harmful narratives about women online. Individuals within the Manosphere are disseminating their beliefs and garnering support through various online platforms, including social media. This research study sheds light on the Black Manosphere, a group within the Manosphere that has gone under the radar, despite the detrimental and toxic content they publish online about Black women. This qualitative research study examined the hostile rhetoric published by the Black Manosphere on Twitter (now X) about Black women. The research questions guiding this qualitative examination were: (1) What types and …

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 …

Faculty Experiences Incorporating Universal Design For Learning In Online Course Design At Historically Black Colleges And Universities, Chinyere Yvette James

Theses and Dissertations

Historically Black colleges and universities (HBCUs) contributed to over 20% of all bachelor’s degrees earned by African American students. Since the 2019 pandemic, HBCUs have provided more online course offerings to their students. The continued success of HBCUs depends on their ability to grow with technology. This study examined the lived experiences of faculty applying universal design for learning (UDL) principles in online courses at HBCUs. This study was conducted to gain insight into the impact UDL had on retention rates, learning experience, and implementation. Online courses at HBCUs are underdeveloped, which poses a problem for continued growth and success …

Examination Of The Differences And Similarities In The Classification Of Multiple Homicide Perpetrators, Lucy M. Papp

Theses and Dissertations

The applied dissertation compares the lifestyle and behavioral characteristics of mass, serial, and spree murderers. Historically, studies have focused on serial murder according to the perpetrator's typology or indicators at the crime scene. The current topics of research lack a comparison of these classifications. While the classification and described typologies are essential for academic and investigative purposes, understanding the impactful lifestyle factors of these perpetrators may also serve as an essential factor in predictive analysis, victimology, and the motive behind their heinous crimes.

The researcher collected data on the classifications for each type of multiple homicide perpetrator: mass, serial, and …

Exploring Communication Preferences And Experiences Of First-Generation Students: Bridging Psychological Distance With Librarians In Online, Hybrid, And In-Person Library Environments—An Interpretative Phenomenological Analysis, Sabine Jean Dantus

Theses and Dissertations

This applied dissertation explored the preferred communication methods for reducing the psychological distance between librarians and 17 first-generation students (FG004 – FG020), including graduate and undergraduate participants in the University Libraries’ online, hybrid, and in-person environments. Through interpretative phenomenological analysis, eight themes emerged, illustrating how participants' communication preferences, cultural and linguistic demands, financial obstacles, and early library experiences affected their communication expectations with librarians.

The findings revealed a dichotomy between in-person and online communication preferences, with participants valuing both the immediacy and social presence of face-to-face interactions and the convenience of online tools like chat services. Cultural and linguistic familiarity …

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 …

Investigating Teacher’S Perceptions Of Equitable Author Choices In Secondary High School Classrooms, Joy Price

Theses and Dissertations

The purpose of this qualitative study was to explore how English teachers can incorporate diverse authors into instruction. The following research questions guided the study:

1. What do teachers describe as the pros/cons of integrating diverse perspectives into teachers’ instruction, in the form of literature by diverse authors?

2. In what ways and how can incorporating literature by diverse authors benefit students?

3. What challenges may teachers face when integrating diverse literature perspectives into instruction?

4. What might enable teachers to integrate diverse literature perspectives into instruction.

The researcher developed designed and field tested a questionnaire for teachers to take …

Exploring Human Resources Practices And Challenges To Retain And Develop Millennial Workers For Future Leadership Roles In The Transportation And Logistics Industry: A Phenomenological Perspective, Graciela Pineda-Blasco

Theses and Dissertations

This applied dissertation examined Human Resources practices in place in the Transportation and Logistics industry aimed at the retention, and development of millennial talent into future corporate leaders in the industry. Despite extensive literature on millennials, there remains ambiguity regarding their specific traits, behaviors, and commitment within corporate settings.

Given the generationally diverse workforce, it is crucial to understand the unique needs and expectations of different cohorts. This study focuses on millennials' communication styles, technological adaptability, and expectations for training and advancement. The findings highlight significant issues in current corporate culture, particularly in HR retention and training strategies, which are …

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 …

Case Study: Implementing Strategies To Meet The Needs Of English Language Learners, Sierra Brooks

Theses and Dissertations

This applied dissertation was designed to provide an understanding of effective ways to meet the needs of English language learners. To focus its inquiry and gain a thorough understanding of the experiences and methods of teachers in various classroom environments, the study used a case study approach. Extensive interviews with the participants yielded interesting insights into the methods they use to tailor their instruction to the requirements of their students as well as the useful resources they include into their instruction. A thorough grasp of instructional dynamics was also made possible by the participants' permission for the researcher to observe …

Exploring The Differences In Military Attitudes Toward Rape Myths And Their Relationship To Demographic Factors, Essence Anderson

Theses and Dissertations

Military sexual assault crimes, including rape, attempted sexual assault, unwanted sexual contact, and sexual harassment, have continued to increase over the last few decades. The issue has become problematic enough for the Department of Defense to allocate a significant amount of money for sexual assault resources. Specifically, the Department of Defense gives millions of dollars each year for the prevention and training of sexual assault, yet the issue continues to persist. There is a lack of understanding of the posture of service members' attitudes toward sexual assault and if certain demographics differ in their attitudes toward rape myths. While sexual …