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Interactions Between A High Intensity Wildfire And An Atmopsheric Hydraulic Jump In The Case Of The 2023 Lahaina Fire, Clifford Dw Ehrke Jul 2025

Interactions Between A High Intensity Wildfire And An Atmopsheric Hydraulic Jump In The Case Of The 2023 Lahaina Fire, Clifford Dw Ehrke

Master's Theses

On 8 August 2023, a grass fire that started in the city of Lahaina, Hawai’i, grew into the deadliest wildfire in the United States since 1918. This wildfire offers a unique opportunity to explore the impact of high heat output on an atmospheric hydraulic jump and a downslope wind event. We conducted two WRF-SFIRE simulations to investigate these effects: one incorporating fire–atmosphere feedback and the other without it. We compare these WRF-SFIRE simulations to all available data regarding the fire event, including high resolution satellite data, weather station data from other parts of Maui and the Hawaiian Archipelago, and official …

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One Nation Under Guard, Everett T. Glynn Jul 2025

One Nation Under Guard, Everett T. Glynn

Master's Theses

The rise of segments of the labor force devoted to functions other than production has received increased scholarly attention, particularly pertaining to the robust deployment of the police and criminal justice apparat in the neoliberal era. Critical perspectives align the rise of the securitization of society with political and economic transitions that occur within the contexts of changes to social inequality and crackdowns on social movements beginning in the 1970s. In a theoretical construction of the emerging concept of guard labor, this thesis finds that robust societal deployments of a form of functional labor used to entrench social inequality has …

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Generalizability Of Existing Ai Models For Automatic Disfluency Detection In Children's Speech, Caryn W. C. Iwakiri Jul 2025

Generalizability Of Existing Ai Models For Automatic Disfluency Detection In Children's Speech, Caryn W. C. Iwakiri

Master's Theses

Achieving consensus in identifying disfluencies and diagnosing developmental stuttering has been a significant challenge for many clinicians, particularly in young bilingual children, who tend to show increased disfluencies. Artificial intelligence (AI) has the potential to recognize more complex yet systematic patterns that might not be easily observable by even trained clinicians. It also has the potential to bring consistency in the measurement of stuttered speech. This study compares the performance of four AI models, their performance on detecting disfluencies including both stutter-like-disfluencies (SLD) and typical disfluencies (TD) in monolingual and bilingual children's data, then explores whether increasing the quantity of …

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Quantization On Graph Neural Networks For Image Classification, Rithik Reddy Katpally Jul 2025

Quantization On Graph Neural Networks For Image Classification, Rithik Reddy Katpally

Master's Theses

Quantization has become a key approach for reducing storage and computational demands of deep neural networks while maintaining high accuracy. Although 8-bit quantization is well-established for convolutional architectures such as ResNet50 and MobileNetV2, its application to graph-based vision models remains underexplored. In this work, we extend quantization-aware training to Vision Graph Neural Networks (ViGs) and conduct comparisons with quantized CNNs on the CIFAR-100 dataset. To ensure parity, all models have same training hyperparameters such as learning rate, batch size, optimizer, number of epochs. We used numerous techniques to preserve performance for low-bit precision. First, Pauta Quantization clips activation outliers based …

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"Are You My Counselor?" A Call To Action How Latinx General Counselors Can Support Latinx Student Retention Rates At California Community College Hispanic-Serving Institutions, Valentín García Cabrera Jul 2025

"Are You My Counselor?" A Call To Action How Latinx General Counselors Can Support Latinx Student Retention Rates At California Community College Hispanic-Serving Institutions, Valentín García Cabrera

Dissertations

Latinx students comprise the largest population within the California Community College (CCC) system, but experience disproportionately lower retention rates. This dissertation used a phenomenological qualitative design and testimonios collected from Latinx general counselors to explore factors influencing Latinx student retention. Sixteen tenured Latinx general counselors from ten Northern California Hispanic-serving community colleges served as participants. Guided by two research questions, the study explored counselors’ perspectives on the factors influencing Latinx community college students’ retention and the counseling strategies, services, and resources that General Counseling Departments should provide to support Latinx student retention. Grounded in Latinx Critical Race Theory, the study …

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The Relationship Between The Dark Triad And Perceived Career Mobility: The Moderating Role Of Perceived Organizational Support, Julia W. R. Leong Jul 2025

The Relationship Between The Dark Triad And Perceived Career Mobility: The Moderating Role Of Perceived Organizational Support, Julia W. R. Leong

Master's Theses

Prior research on career mobility has found that personality is not a strong predictor of career mobility. However, these studies have mainly focused on the Big Five personality traits and have not looked into other personality traits as predictors. The present study has looked into alternate personality traits and their relationship with perceived internal and external career mobility. These traits were the Dark Triad traits, consisting of Machiavellianism, narcissism, and psychopathy. The present study hypothesized that each of the Dark Triad traits would positively predict both perceived internal and external career mobility and that perceived organizational support (POS) would moderate …

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Stead: Spatio-Temporal Efficient Anomaly Detection For Time And Compute Sensitive Applications, Andrew Gao Jul 2025

Stead: Spatio-Temporal Efficient Anomaly Detection For Time And Compute Sensitive Applications, Andrew Gao

Master's Theses

This paper presents a new method for anomaly detection in automated systems with time and compute sensitive requirements, with unparalleled efficiency. As these systems become increasingly popular, ensuring their safety has become more important than ever. Therefore, this paper focuses on how to quickly and effectively detect various anomalies in the aforementioned systems, with the goal of making them safer and more effective. Many detection systems have been developed with great success under spatial contexts; however, there is still significant room for improvement when it comes to temporal context. While there is substantial work regarding this task, there is minimal …

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All Eyes On Me: Security And Preventative Measures In The Era Of Shoplifting, Clarissa Guevarra Jul 2025

All Eyes On Me: Security And Preventative Measures In The Era Of Shoplifting, Clarissa Guevarra

Master's Theses

The passing of CA bills ranging from AB 1779 to SB 1416, and Proposition 36 aims to combat a supposed rise in retail theft, particularly denoting the increase in organized retail theft. This research investigates the accuracy of mainstream narratives surrounding retail theft, focusing on the various security strategies adopted by major retailers—namely, Walmart and Target stores—in the San Francisco Bay Area. The study aims to analyze the different types of security (human and physical), and their efficacy, and to envision alternative strategies to address theft beyond the adoption of punitive security strategies. Using a visual ethnographic approach, supplemented with …

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The Relationship Between Psychological Contract Breach And Work Motivation And Attitude Among Tech Employees: The Moderating Role Of Conscientiousness, Rama E. Khoury Jul 2025

The Relationship Between Psychological Contract Breach And Work Motivation And Attitude Among Tech Employees: The Moderating Role Of Conscientiousness, Rama E. Khoury

Master's Theses

There has been some research on moderating factors of the relationship between psychological contract breach (PCB) and work engagement and affective commitment. However, most studies conducted have mainly focused on situational factors (e.g., job satisfaction, exchange imbalance), not on individual factors (e.g., personality traits). This research gap leaves a question in the role that personality traits play in influencing the negative consequences of PCB. The purpose of this study was to examine the moderating role of conscientiousness on the relationship between PCB and two outcomes, work engagement and affective commitment. Hypotheses were tested using 103 technology industry employees in the …

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Abalone And Seaweed Co-Culture: Growth And Shell Biomineralization Of An Iconic California Gastropod, Noah R. Kolander Jul 2025

Abalone And Seaweed Co-Culture: Growth And Shell Biomineralization Of An Iconic California Gastropod, Noah R. Kolander

Master's Theses

Climate change threatens shellfish aquaculture worldwide, with ocean acidification (OA) accelerating shell dissolution and reducing calcification, hindering growth. This study addressed the negative impacts of OA on juvenile red abalone (Haliotis rufescens), a life stage that is particularly susceptible to climate stressors, and the ability of the red seaweed, dulse (Devaleraea mollis), to mitigate these effects. I tested the hypothesis that Integrated Multi-Trophic Aquaculture (IMTA), with abalone and seaweed grown in co-culture, can raise seawater pH through photosynthesis to yield more favorable conditions for abalone growth and shell construction. A 5-month experiment was conducted to determine the benefits of IMTA …

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Using Facial Recognition For Selective Pose Detection, William J. Parker Jul 2025

Using Facial Recognition For Selective Pose Detection, William J. Parker

Master's Theses

Pose detection involves locating and identifying key body points for all individuals within a frame. This enables the ability to convert the pose into a digital format, which can then be recorded and analyzed for a variety of purposes. Advancements in the field have already opened applications in areas such as digital fitness coaches, fall detection, and virtual reality. Existing approaches primarily focus on tracking all detected individuals, which limits the practical applications when attempting to analyze a single or specific subject when there are other people in frame. Previous work has discussed integrating identification, but these approaches use identification …

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An Interpretative Phenomenological Analysis Of Black Female Swimmers' Experiences Of Belonging, Felicity E. Passon Jul 2025

An Interpretative Phenomenological Analysis Of Black Female Swimmers' Experiences Of Belonging, Felicity E. Passon

Master's Theses

Although swimming participation has grown in the United States, the experiences of Black female swimmers remain significantly underrepresented in academic literature. This study addresses that gap by exploring the lived experiences of Black women participating in Division 1 (D1) college swimming. Using Interpretative Phenomenological Analysis (IPA) and Black feminist thought, the research explored how Black female D1 swimmers experienced belonging in this underrepresented sport. Semi-structured interviews were conducted with nine D1 Black female swimmers, and six major themes illustrate the varied factors that shaped their experiences of belonging. Even with racially gendered barriers to inclusion, they identified strategies to foster …

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Quantum Algorithm Emulation Using Fpgas, Samuel Petruescu Jul 2025

Quantum Algorithm Emulation Using Fpgas, Samuel Petruescu

Master's Theses

Field Programmable Gate Arrays (FPGAs) have been used in most of the physics sub-fields for various unique purposes. This includes particle physics, quantum optics, and, more recently, quantum computing. FPGAs boast many benefits over previous experimental and computational setups. They are versatile, easy to program, and cost-effective, leading to an understandable desire to incorporate them into the new field of quantum computing. While FPGAs have been used to help control the readout and control of physical qubits, they can also be a good tool for improving algorithm simulations, which is the focus of this paper. Different algorithms have different computational …

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Superconducting Quantum Chip Design And Simulation, James F. Saslow Jul 2025

Superconducting Quantum Chip Design And Simulation, James F. Saslow

Master's Theses

This work presents a comprehensive analytical and simulation-based study of superconducting quantum chip architectures, spanning both 2D planar and 3D-integrated designs. We first design and simulate a planar quantum chip layout using Qiskit Metal, which is imported into Ansys HFSS (High Frequency Structure Simulator) to construct a 3D model and perform electromagnetic simulations. A detailed analysis using Driven Modal, Eigenmode, Magnetostatic, and Q3D Capacitance Extraction solvers ensures our simulations accurately reflect physical behavior. The results are validated against analytical models from microwave engineering. pyEPR (Python Energy Participation Ratio) is used to extract key quantum metrics, including eigenfrequencies, quality factors, decoherence …

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Sirilla: Predicting Traffic Flow Via Stacked Decentralized Federated Learning, Andrew Selvia Jul 2025

Sirilla: Predicting Traffic Flow Via Stacked Decentralized Federated Learning, Andrew Selvia

Master's Theses

Billions of people today rely on traffic predictions to optimize their travels. Digital mapping services deliver accurate predictions by learning from vast troves of historical data. Impressive as these systems are, their assumptions do not always apply. They depend on an endless flow of sensitive user data to a central authority, a stable Internet connection, and trustworthiness on both sides of the traditional client-server model. This thesis explores a novel architecture which bucks those assumptions. In the proposed model, traffic data remains on edge devices which individually train models via federated learning. Beyond the obvious privacy benefits, this architecture enables …

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Investigating The Complexity Of Language Acquisition For Linguistically Diverse Children, Krittin Srisajjakul Jul 2025

Investigating The Complexity Of Language Acquisition For Linguistically Diverse Children, Krittin Srisajjakul

Master's Theses

Understanding the natural productions of children's early expressive language development is important to support their development. These natural productions may also be especially complex in children with diverse linguistic backgrounds. A challenge for clinicians is how to assess these natural productions for children’s early expressive language milestones. For example, what does it mean for children to say the same word in two languages and refer to the same concept (e.g., “water” and “agua”)? Or refer to two different concepts, (e.g., “water” and “leche” (milk))? By understanding how children’s expressive language connects to conceptual understanding, clinicians can better support language learning. …

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Fluid-Structure Interaction Comsol Model For Unsteady Flow Through A 3d Bi-Leaflet Mechanical Heart Valve, Aya Zaky Jul 2025

Fluid-Structure Interaction Comsol Model For Unsteady Flow Through A 3d Bi-Leaflet Mechanical Heart Valve, Aya Zaky

Master's Theses

In this study, we developed a 3D Fluid-Structure Interaction (FSI) model using COMSOL© to analyze the unsteady flow through a bi-leaflet mechanical heart valve. The model incorporates sufficient complexity to test various factors, such as leaflet angle rotation, material selection for rigid components, fluid properties, and different simulation modes. Simultaneously, the model maintains a simplified structure and is developed using a single software platform, facilitating ease of modification and expansion by other researchers or developers. The mechanical heart valve (MHV) design was created using St. Jude’s geometric parameters as a reference. The input and output pressure waveforms are derived from …

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Early Care And Education Systems In The United States Of America: Voices Of The Past, Present, And Future, Timothy Harper Jul 2025

Early Care And Education Systems In The United States Of America: Voices Of The Past, Present, And Future, Timothy Harper

Dissertations

This mixed-methods study centers the voices, knowledge, and leadership of Black and Indigenous women working in Early Care and Education (ECE) while tracing how racism, sexism, and classism have shaped the field from colonization to the present day. Twenty in-depth interviews with sixteen Black and Indigenous educators across the United States are paired with secondary analyses of national workforce data to create a multilayered portrait of their professional realities. Grounded in Black feminist thought and Indigenous desire-based inquiry, the analysis surfaces six inter-locking themes: (a) enduring structural barriers that depress wages and limit advancement, (b) the day-to-day resilience that sustains …

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Healing Circulos(Circles): Putting Our Educator's Mask First, Janet Martinez-Angeles Jul 2025

Healing Circulos(Circles): Putting Our Educator's Mask First, Janet Martinez-Angeles

Dissertations

Educators play a pivotal role in supporting students throughout their educational journeys. In addition to academic instruction, they provide vital guidance for students' social, emotional, and personal development. They work tirelessly to help students navigate the complexities of education and life, often while shouldering multiple responsibilities and roles beyond the classroom. This dynamic contributes to high attrition rates and weakens the educational system. Much like the familiar safety instructions on an airplane, where passengers are reminded to put on their oxygen masks before assisting others, educators must be given the space, resources, and support to tend to their well-being before …

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Exploring Program Participant And Staff Perspectives On Correctional Education Programs, My Ngoc Nguyen Jul 2025

Exploring Program Participant And Staff Perspectives On Correctional Education Programs, My Ngoc Nguyen

Dissertations

In this paper, I explored program participant and staff perspectives on correctional education programs. Prior research measured success of correctional education through recidivism, post-employment opportunities, and post-secondary education. However, few research examined the perspectives of staff, program participants, and alumni of such programs to understand factors that aid in important educational experiences within correctional education programs. In this study, I utilized a mixed-methods approach, where I collected close-ended and open-ended survey responses from 10 staff and 5 program participants on their ratings of program principles and characteristics as well as optional follow-up interviews to elaborate on their survey responses. The …

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Engagement Of Secondary History Social Science Teachers With Professional Development: A Phenomenological Study, Suzanne Paulazzo Jul 2025

Engagement Of Secondary History Social Science Teachers With Professional Development: A Phenomenological Study, Suzanne Paulazzo

Dissertations

Secondary social science teachers tend to feel disengaged and frustrated with their professional development (PD) experiences. They also feel that recommended meaningful practices appear to be time-consuming, require extra hours of preparation, and rely heavily on collaboration. Using phenomenological methodology, the dissertation research investigated secondary social science teachers' perceptions of their roles as educators, their professional growth, and their motivations for engaging in professional development opportunities. Nine male and one female teacher participants from a History-Social-Science Department in an urban public school in Northern California participated in an interview. This study addressed the following research questions: How do teachers perceive …

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Teacher Workplace Bullying: Victim And Bystander Perspectives, Abigail R. Smurr Jul 2025

Teacher Workplace Bullying: Victim And Bystander Perspectives, Abigail R. Smurr

Dissertations

Workplace bullying is a phenomenon that is addressed within a broad context. This study focuses on teacher experiences of bullying. The focus will examine the impacts horizontal and vertical bullying can have on teacher victims and bystanders within K-12th within California. The purpose of this study is to give administrators awareness of these issues from the victim and bystanders’ lens. The study implemented a mixed methods design to give insight to teacher perceptions on the impacts it can have on their teacher efficacy, teacher retention, and their emotional well-being. By looking at how often PK-12th grade teachers experience workplace bullying, …

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Contracts, Communication, And Contextual Integrity: A Case Study About Student Data Use In Higher Education, Joseph Fessehaye Jul 2025

Contracts, Communication, And Contextual Integrity: A Case Study About Student Data Use In Higher Education, Joseph Fessehaye

Dissertations

This case study examines the contractual agreements between the University of Missouri System and the California State University System with the Educational Advisory Board (EAB), focusing on how these contracts align with institutional student data privacy policies. The research utilizes a Policy Document Analysis approach and explores both universities’ strategic plans, student data privacy guidelines, and the third-party agreements with EAB, using a Contextual Integrity framework to analyze how student data is managed and protected. Through the analysis of these documents, this dissertation investigates whether the flow of student data within the context of these contracts meets institutional privacy standards …

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Cultivating Belonging: Empowering Hispanic Parents In The U.S. Education System, Kalpana Galagali Jul 2025

Cultivating Belonging: Empowering Hispanic Parents In The U.S. Education System, Kalpana Galagali

Dissertations

This qualitative study explores the experiences of Hispanic families at Bay Area Middle School and the strategies I employed to create a sense of belonging and support for both students and their families. Key strategies included fostering effective communication through Spanish interpreters, celebrating cultural traditions, and organizing inclusive events like the annual cultural fair. Parents expressed gratitude for the personal attention their children received and noted how these initiatives positively impacted their sense of belonging. The findings highlight that cultural integration and community-building efforts significantly enhanced family engagement, transforming perceptions of the school environment from feelings of disconnection to appreciation …

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Resilience In Crisis: How Bipoc Educators Navigated The Challenges Associated With Covid-19, Racial Awakening, And The Move To Online Learning, Jannet Galicia Castrejon Jul 2025

Resilience In Crisis: How Bipoc Educators Navigated The Challenges Associated With Covid-19, Racial Awakening, And The Move To Online Learning, Jannet Galicia Castrejon

Dissertations

An unprecedented number of BIPOC teachers exited the profession since June 2020 largely due to the challenges posted by the COVID-19 pandemic (Doan et al., 2024). This study aimed to investigate ways these educators coped with the heavy toll of the converging pandemic(s) by asking what, if anything, sustained them? Participants provided individual and group testimonios and shared snapshots of what it was like to teach and exist during this time via the photovoice methodology and reflected on the challenges and sources of support. BIPOC teachers described the following challenges: difficulty connecting with kids, first-hand and vicarious trauma, increased workload, …

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Cultura Y Corazón: Latina Elementary School Principals Leading Schools, Mariana M. Alvarez Jul 2025

Cultura Y Corazón: Latina Elementary School Principals Leading Schools, Mariana M. Alvarez

Dissertations

This qualitative participatory study focused on understanding the experiences of Latina elementary school principals on their pathway to school leadership and how cultural intuition and community cultural wealth influence their approaches to school leadership. Chicana Feminist Epistemology (CFE) and Latino Critical Race Theory (LatCrit) framed the study, while testimonio y pláticas served as the methodological framework. The concept of Community Cultural Wealth served as an analytical framework. Students of color often feel their histories, experiences, and languages are undervalued in education. Participants in this study shared challenges in navigating school, coming from families that valued education but faced barriers. Their …

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Lessons From The 2023 Ieee Autonomous Drone Chase Challenge, Luigi Raphael I. Dy, Kristoffer B. Borgen, John H. Mott, Yung Hsiang Lu, Li Yu Lin, Zhangpeng Yang, James M. Goppert, Jakub Tomczak, Stefano Roccella, Andrea Vannini, Zhiwei Dong Jul 2025

Lessons From The 2023 Ieee Autonomous Drone Chase Challenge, Luigi Raphael I. Dy, Kristoffer B. Borgen, John H. Mott, Yung Hsiang Lu, Li Yu Lin, Zhangpeng Yang, James M. Goppert, Jakub Tomczak, Stefano Roccella, Andrea Vannini, Zhiwei Dong

Faculty Research, Scholarly, and Creative Activity

No abstract provided.

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Indirect Excitons And Many-Body Interactions In Ingaas Double Quantum Wells, Christopher L. Smallwood, Rachel Owen, Matthew W. Day, Takeshi Suzuki, Rohan Singh, Travis M. Autry, Smriti Bhalerao, Fauzia Jabeen, Steven T. Cundiff Jul 2025

Indirect Excitons And Many-Body Interactions In Ingaas Double Quantum Wells, Christopher L. Smallwood, Rachel Owen, Matthew W. Day, Takeshi Suzuki, Rohan Singh, Travis M. Autry, Smriti Bhalerao, Fauzia Jabeen, Steven T. Cundiff

Faculty Research, Scholarly, and Creative Activity

Spatially indirect excitons in semiconductor quantum wells are relevant to basic research and device applications because they exhibit enhanced tunability, delocalized wave functions, and potentially longer lifetimes relative to direct excitons. Here we investigate the properties of indirect excitons and their coupling interactions with direct excitons in asymmetric InGaAs double quantum wells using optical multidimensional coherent spectroscopy and photoluminescence excitation spectroscopy. Analyses of the spectra confirm a strong influence of many-body effects and reveal that excited-state zero-quantum coherences between direct and indirect excitons in the quantum wells dephase faster than the much-higher-energy single-quantum coherences between excitonic excited states and ground …

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Euler’S Formula For General Graph Embeddings, Doug Bauer, Linda Lesniak, Edward Schmeichel Jul 2025

Euler’S Formula For General Graph Embeddings, Doug Bauer, Linda Lesniak, Edward Schmeichel

Faculty Research, Scholarly, and Creative Activity

Consider an embedding of a graph G(v,e) with v≥1 vertices and e≥0 edges into a closed surface s, with r resulting regions. If G is connected and every region is a 2-cell (a so-called 2-cell embedding), Euler’s formula is the relation v−e+r=χ(s), where χ(s) denotes the Euler characteristic of s. Here we give a generalization of Euler’s formula which applies to any embedding (2-cell or not) of any graph (connected or not) into any surface (orientable or not), with several interesting corollaries. One rather striking corollary is the converse of Euler’s formula itself: If an embedding of a graph G(v,e) …

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Advancing The Upper Class E Traffic Management (Etm) Concept: Results Of Nasa’S First Etm Collaborative Evaluation With Industry Partners, Deborah L. Bakowski, Connie L. Brasil, Kevin Christian Garzon Galindo, Abhinay Tiwari, Paul U. Lee, Conrad Dang-Gabriel, Jeffrey Homola, Mark Evans Jul 2025

Advancing The Upper Class E Traffic Management (Etm) Concept: Results Of Nasa’S First Etm Collaborative Evaluation With Industry Partners, Deborah L. Bakowski, Connie L. Brasil, Kevin Christian Garzon Galindo, Abhinay Tiwari, Paul U. Lee, Conrad Dang-Gabriel, Jeffrey Homola, Mark Evans

Faculty Research, Scholarly, and Creative Activity

Innovative aircraft design and emerging technologies are enabling new types of uncrewed, high-altitude long endurance (HALE) vehicles, including fixed-wing HALE vehicles and stratospheric balloons to operate above 60,000 feet. However, due to a variety of factors including the diverse performance characteristics and extended mission duration of these new vehicles, the Air Traffic Management system faces challenges in meeting the needs of this high-altitude environment. To address these challenges, the Higher Airspace (HA)/Upper Class E Traffic Management (ETM) concept proposes using a scalable, cooperative approach tailored for high-altitude operations. To evaluate the feasibility of the HA/ETM concept, NASA Ames Research Center …

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