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Violet: Visual Analytics For Explainable Quantum Neural Networks, Shaolun Ruan, Zhiding Liang, Qiang Guan, Paul Robert Griffin, Xiaolin Wen, Yanna Lin, Yong Wang Jun 2024

Violet: Visual Analytics For Explainable Quantum Neural Networks, Shaolun Ruan, Zhiding Liang, Qiang Guan, Paul Robert Griffin, Xiaolin Wen, Yanna Lin, Yong Wang

Research Collection School Of Computing and Information Systems

With the rapid development of Quantum Machine Learning, quantum neural networks (QNN) have experienced great advancement in the past few years, harnessing the advantages of quantum computing to significantly speed up classical machine learning tasks. Despite their increasing popularity, the quantum neural network is quite counter-intuitive and difficult to understand, due to their unique quantum-specific layers (e.g., data encoding and measurement) in their architecture. It prevents QNN users and researchers from effectively understanding its inner workings and exploring the model training status. To fill the research gap, we propose VIOLET , a novel visual analytics approach to improve the explainability …


Dappscan: Building Large-Scale Datasets For Smart Contract Weaknesses In Dapp Projects, Zibin Zheng, Jianzhong Su, Jiachi Chen, David Lo, Zhijie Zhong, Mingxi Ye Jun 2024

Dappscan: Building Large-Scale Datasets For Smart Contract Weaknesses In Dapp Projects, Zibin Zheng, Jianzhong Su, Jiachi Chen, David Lo, Zhijie Zhong, Mingxi Ye

Research Collection School Of Computing and Information Systems

The Smart Contract Weakness Classification Registry (SWC Registry) is a widely recognized list of smart contract weaknesses specific to the Ethereum platform. Despite the SWC Registry not being updated with new entries since 2020, the sustained development of smart contract analysis tools for detecting SWC-listed weaknesses highlights their ongoing significance in the field. However, evaluating these tools has proven challenging due to the absence of a large, unbiased, real-world dataset. To address this problem, we aim to build a large-scale SWC weakness dataset from real-world DApp projects. We recruited 22 participants and spent 44 person-months analyzing 1,199 open-source audit reports …


Fully Automated Selfish Mining Analysis In Efficient Proof Systems Blockchains, Krishnendu Chatterjee, Amirali Ebrahimzadeh, Mehrdad Karrabi, Krzysztof Pietrzak, Michelle Yeo, Dorde Zikelic Jun 2024

Fully Automated Selfish Mining Analysis In Efficient Proof Systems Blockchains, Krishnendu Chatterjee, Amirali Ebrahimzadeh, Mehrdad Karrabi, Krzysztof Pietrzak, Michelle Yeo, Dorde Zikelic

Research Collection School Of Computing and Information Systems

We study selfish mining attacks in longest-chain blockchains like Bitcoin, but where the proof of work is replaced with efficient proof systems - like proofs of stake or proofs of space - and consider the problem of computing an optimal selfish mining attack which maximizes expected relative revenue of the adversary, thus minimizing the chain quality. To this end, we propose a novel selfish mining attack that aims to maximize this objective and formally model the attack as a Markov decision process (MDP). We then present a formal analysis procedure which computes an ϵ-tight lower bound on the optimal expected …


Draft Final Quarterly Operations And Maintenance Report Butte Treatment Lagoon System – First Quarter 2024, Pioneer Technical Services, Inc. Jun 2024

Draft Final Quarterly Operations And Maintenance Report Butte Treatment Lagoon System – First Quarter 2024, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.


Berkeley Pit And Discharge Pilot Project Downstream Field Sampling Plan 2024 Update, Revision 1, Pioneer Technical Services, Inc. Jun 2024

Berkeley Pit And Discharge Pilot Project Downstream Field Sampling Plan 2024 Update, Revision 1, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.


Prevention Is The Only Way, Don't Let A Fall Ruin Your Day, Grace Wichmann, Sagen Williams, Deanna Fleeman, Lauren Kinner, Caroline Honza Jun 2024

Prevention Is The Only Way, Don't Let A Fall Ruin Your Day, Grace Wichmann, Sagen Williams, Deanna Fleeman, Lauren Kinner, Caroline Honza

2023

No abstract provided.


Putting The Lawyer First: Framing Well-Being In Law As An Ethical Dilemma, Aric Short Jun 2024

Putting The Lawyer First: Framing Well-Being In Law As An Ethical Dilemma, Aric Short

Mercer Law Review

A disturbingly high percentage of our students continue to be unwell. In the most recent and comprehensive survey of law student well-being in 2021, almost 70% of law students responded that, in the past twelve months, they believed they needed to seek help for emotional or mental health problems. Embedded screening tools in the survey suggested that 34% of respondents were clinically depressed and 54% suffered from clinical anxiety. 44% of respondents reported being drunk in the past thirty days, 33% had engaged in binge drinking in the preceding two weeks, and 38% had smoked marijuana in the past twelve …


Tale As Old As Time: The Beauty And The Beast Of Probabilistic Genotyping And Its Use In Georgia, Elizabeth Mcdaniel Jun 2024

Tale As Old As Time: The Beauty And The Beast Of Probabilistic Genotyping And Its Use In Georgia, Elizabeth Mcdaniel

Mercer Law Review

Deoxyribonucleic acid or as most of us prefer to call it—DNA—is a molecule in an organism that allows the organism to develop and function by carrying genetic information. DNA is what makes us unique. It was first observed in the late 1800s; however, its significance was not fully known until 1953. The use of DNA as evidence in criminal trials did not begin until the 1980s. Subsequently, the first statutes regarding DNA testing were passed in 1994 and 1997. Despite DNA’s late scientific discovery and its even later use in the legal profession, DNA has existed in organisms since their …


Stable State Societies In The Eye Of The Storm, John W. Ragsdale Jun 2024

Stable State Societies In The Eye Of The Storm, John W. Ragsdale

UMKC Law Review

This Article will discuss the values and beliefs that are vital to sustainability and a prelude to the coming battle against the existential threat of climate change. It will examine the components of the core of a homeostatic, balancing-seeking entity that itself is in constant, rhythmic, corrective motion. The stable state counters the incessant, swirling forces that surround the peace within. Paradoxically, the continued resilience of the sustainable state requires constant vigilance and maintenance.


Protecting Water, Sustaining Communities: Transforming Groundwater Management Entities Into Sources Of Power During And After Environmental Crises, Sarah Matsumoto Jun 2024

Protecting Water, Sustaining Communities: Transforming Groundwater Management Entities Into Sources Of Power During And After Environmental Crises, Sarah Matsumoto

UMKC Law Review

Groundwater serves as a vital, limited resource for people all over the world. The United States Geological Survey reports that about 140 million people in the United States rely on groundwater for drinking water, of those, almost 43 million people rely on groundwater from domestic (or private, non-public supply) wells. In rural areas, groundwater is often the only available source of drinking water, making protection of groundwater quality in these regions a paramount concern.

Mirroring the various state regulatory approaches to groundwater management and protection, much of the recent media coverage of groundwater in the West focuses on water allocation …


The Harlan Court: A Constitutional Alternate History, H. Jefferson Powell Jun 2024

The Harlan Court: A Constitutional Alternate History, H. Jefferson Powell

North Carolina Law Review

No abstract provided.


The Finality Of Reinstated Orders Of Removal Under 8 U.S.C. § 1252, Jonah Klausner Jun 2024

The Finality Of Reinstated Orders Of Removal Under 8 U.S.C. § 1252, Jonah Klausner

University of Chicago Law Review

Federal law authorizes the reinstatement of a prior removal order when a noncitizen “reenter[s] the United States without authorization after having already been removed.” It further provides an “expedited process” for doing so, denying to such noncitizens the right to contest before an immigration judge their removability or inadmissibility. The question whether a noncitizen is removable is thus definitively settled immediately upon reinstatement. But the question to where the noncitizen will be removed is less certain. This is because noncitizens subject to reinstated orders of removal retain the right to pursue “withholding-only” relief, which precludes removal to the noncitizen’s home …


Mind The Gap: Toussaint And The Reception Of International Human Rights Law In Canada, Karinne Lantz Jun 2024

Mind The Gap: Toussaint And The Reception Of International Human Rights Law In Canada, Karinne Lantz

Articles, Book Chapters, & Popular Press

This article explores the reception of international human rights law (“IHRL”) in Canada and the enforcement gap that may arise when legislation is not passed expressly implementing human rights treaties that Canada has ratified. Despite establishing a variety of interpretive methods that may result in Canada’s binding IHRL obligations having domestic effect even when they are not expressly implemented, Canadian courts have struggled to provide clear and consistent guidance on how IHRL applies in Canada. The selective approach in Canada to implementing legislatively IHRL obligations may give rise to an enforcement gap when rights individuals purportedly enjoy under international law …


Is A Photo Indeed Worth A Thousand Words? Validating The Use Of Photos To Understand Mental Health, Gender, And Coping Methods In College Students, Jacqueline Belkin Jun 2024

Is A Photo Indeed Worth A Thousand Words? Validating The Use Of Photos To Understand Mental Health, Gender, And Coping Methods In College Students, Jacqueline Belkin

Honors Projects

The purpose of this study is to investigate coping mechanisms among college students at a Midwestern university using photoelicitation and to examine gender differences in coping responses, validated by mental health professionals. The study involved students from a large 4-year college in the Midwestern United States, along with mental health professionals. A diverse group of student participants and mental health professionals reviewed researcher-supplied photographs, rating coping mechanisms on a 1 to 10 scale. Students also uploaded photographs reflecting their coping methods. Quantitative and qualitative analyses were conducted on both researcher-supplied and student-submitted photographs. Mental health professionals validated student responses. Responses …


Poetry Style Experimentation, Ian Mcguckin Jun 2024

Poetry Style Experimentation, Ian Mcguckin

Honors Projects

This project is an experimentation in different craft and stylistic approaches to poetry. Each week, a different major contemporary poet was studied through one of their collections. Their work was analyzed and dissected to reveal some of the main stylistic choices they make to achieve their individual effect. After analysis, a handful of these elements were chosen to replicate in the author's own poems. Guided by crafted prompts created to inspire the author towards the chosen poet's style or subject, two to three poems were drafted each week and then revised at the end of the week. In total, this …


The Making Of Presidential Administration, Ashraf Ahmed, Lev Menand, Noah Rosenblum Jun 2024

The Making Of Presidential Administration, Ashraf Ahmed, Lev Menand, Noah Rosenblum

Faculty Scholarship

Today, the idea that the President possesses at least some constitutional authority to direct administrative action is accepted by the courts, Congress, and the legal academy. But it was not always so. For most of American history — indeed until relatively recently — Presidents derived their authority over the administrative state largely from statute. Any role for the White House in agency rulemaking or adjudication had to be legally specified. Scholars mostly agree about when this change occurred. But the dominant shared narrative — exemplified by then-Professor Elena Kagan’s seminal article Presidential Administration — is Whig history. It offers a …


Causes And Presentations Of Bilateral Thalamic Lesions: A Retrospective Cross-Sectional Study From A Tertiary Care Hospital, Shafaq Saleem, Muhammad Saleem, Fatima Mubarak, Salman Farooq Jun 2024

Causes And Presentations Of Bilateral Thalamic Lesions: A Retrospective Cross-Sectional Study From A Tertiary Care Hospital, Shafaq Saleem, Muhammad Saleem, Fatima Mubarak, Salman Farooq

Pakistan Journal of Neurological Sciences (PJNS)

Background and objective: Bilateral thalamic lesions present a significant diagnostic and therapeutic challenge due to their critical role in sensory, motor, and cognitive functions. The objective of this study was to study the causes and presentations of bilateral thalamic lesions among patients presenting to a tertiary care hospital. Methods: This retrospective study reviewed 40 patients aged 18–80 years admitted to Aga Khan University Hospital between 2006 and 2023 with MRI-confirmed bilateral thalamic lesions. Data collected included demographics, clinical presentations, radiological findings, and final diagnoses. The data was analyzed through SPSS 22.0.

Results: Of the 40 cases analyzed, the most common …


A Qualitative Study Of Closed Captions In English Language Teaching (Elt) Youtube Videos, Queenie Mae G. Hernandez, Monica Louise G. Nacionales, Camilla J. Vizconde Jun 2024

A Qualitative Study Of Closed Captions In English Language Teaching (Elt) Youtube Videos, Queenie Mae G. Hernandez, Monica Louise G. Nacionales, Camilla J. Vizconde

Journal of English and Applied Linguistics

The COVID-19 pandemic reinforced online learning of English using YouTube as a viewing material in the Philippines. Using an adapted checklist evaluation, the study assessed the closed caption (CC) quality of forty-eight (48) YouTube videos dedicated to English language teaching and learning by Filipino content creators from 2020 to 2022. Findings show Filipino-made English language teaching (ELT) videos only used auto-generated captions, which affected the accessibility of the materials, especially for D/deaf learners. Multiple discrepancies were noted in the accuracy of the captions due to their automated properties, namely, in grammar and vocabulary, which hinder learning for those who use …


Sars-Cov-2 Envelope Protein Regulates Innate Immune Tolerance., Eric S. Geanes, Rebecca Mclennan, Stephen H. Pierce, Heather Menden, Oishi Paul, Venkatesh Sampath, Todd Bradley Jun 2024

Sars-Cov-2 Envelope Protein Regulates Innate Immune Tolerance., Eric S. Geanes, Rebecca Mclennan, Stephen H. Pierce, Heather Menden, Oishi Paul, Venkatesh Sampath, Todd Bradley

Manuscripts, Articles, Book Chapters and Other Papers

Severe COVID-19 often leads to secondary infections and sepsis that contribute to long hospital stays and mortality. However, our understanding of the precise immune mechanisms driving severe complications after SARS-CoV-2 infection remains incompletely understood. Here, we provide evidence that the SARS-CoV-2 envelope (E) protein initiates innate immune inflammation, via toll-like receptor 2 signaling, and establishes a sustained state of innate immune tolerance following initial activation. Monocytes in this tolerant state exhibit reduced responsiveness to secondary stimuli, releasing lower levels of cytokines and chemokines. Mice exposed to E protein before secondary lipopolysaccharide challenge show diminished pro-inflammatory cytokine expression in the lung, …


Influence Of Eat, Sleep, And Console On Infants Pharmacologically Treated For Opioid Withdrawal: A Post Hoc Subgroup Analysis Of The Esc-Now Randomized Clinical Trial., Lori A. Devlin, Zhuopei Hu, Stephanie L. Merhar, Songthip T. Ounpraseuth, Alan E. Simon, Jeannette Y. Lee, Abhik Das, Margaret M. Crawford, Rachel G. Greenberg, P Brian Smith, Rosemary D. Higgins, Michele C. Walsh, Ward Rice, David A. Paul, Jessie R. Maxwell, Camille M. Fung, Tanner Wright, Julie Ross, Jennifer M. Mcallister, Moira Crowley, Sophie K. Shaikh, Lori Christ, Jaime Brown, Julie Riccio, Kara Wong Ramsey, Erica F. Braswell, Lauren Tucker, Karen Mcalmon, Krishna Dummula, Julie Weiner, Jessica R. White, Sarah Newman, Jessica N. Snowden, Leslie W. Young, Eunice Kennedy Shriver Nichd Neonatal Research Network And Nih Environmental Influences On Child Health Outcomes (Echo) Program Institutional Development Award States Pediatric Clinical Trials Network Jun 2024

Influence Of Eat, Sleep, And Console On Infants Pharmacologically Treated For Opioid Withdrawal: A Post Hoc Subgroup Analysis Of The Esc-Now Randomized Clinical Trial., Lori A. Devlin, Zhuopei Hu, Stephanie L. Merhar, Songthip T. Ounpraseuth, Alan E. Simon, Jeannette Y. Lee, Abhik Das, Margaret M. Crawford, Rachel G. Greenberg, P Brian Smith, Rosemary D. Higgins, Michele C. Walsh, Ward Rice, David A. Paul, Jessie R. Maxwell, Camille M. Fung, Tanner Wright, Julie Ross, Jennifer M. Mcallister, Moira Crowley, Sophie K. Shaikh, Lori Christ, Jaime Brown, Julie Riccio, Kara Wong Ramsey, Erica F. Braswell, Lauren Tucker, Karen Mcalmon, Krishna Dummula, Julie Weiner, Jessica R. White, Sarah Newman, Jessica N. Snowden, Leslie W. Young, Eunice Kennedy Shriver Nichd Neonatal Research Network And Nih Environmental Influences On Child Health Outcomes (Echo) Program Institutional Development Award States Pediatric Clinical Trials Network

Manuscripts, Articles, Book Chapters and Other Papers

IMPORTANCE: The function-based eat, sleep, console (ESC) care approach substantially reduces the proportion of infants who receive pharmacologic treatment for neonatal opioid withdrawal syndrome (NOWS). This reduction has led to concerns for increased postnatal opioid exposure in infants who receive pharmacologic treatment. However, the effect of the ESC care approach on hospital outcomes for infants pharmacologically treated for NOWS is currently unknown.

OBJECTIVE: To evaluate differences in opioid exposure and total length of hospital stay (LOS) for pharmacologically treated infants managed with the ESC care approach vs usual care with the Finnegan tool.

DESIGN, SETTING, AND PARTICIPANTS: This post hoc …


Prospective Study Of Modifiable Risk Factors Of Arterial Hypertension And Left Ventricular Hypertrophy In Pediatric Patients On Hemodialysis., Dagmara Borzych-Dużałka, Rukshana Shroff, Bruno Ranchin, Yihui Zhai, Fabio Paglialonga, Jameela A. Kari, Yo H. Ahn, Hazem S. Awad, Reyner Loza, Nakysa Hooman, Robin Ericson, Dorota Drożdz, Amrit Kaur, Sevcan A. Bakkaloglu, Charlotte Samaille, Marsha Lee, Stephanie Tellier, Julia Thumfart, Marc Fila, Bradley A. Warady, Franz Schaefer, Claus P. Schmitt Jun 2024

Prospective Study Of Modifiable Risk Factors Of Arterial Hypertension And Left Ventricular Hypertrophy In Pediatric Patients On Hemodialysis., Dagmara Borzych-Dużałka, Rukshana Shroff, Bruno Ranchin, Yihui Zhai, Fabio Paglialonga, Jameela A. Kari, Yo H. Ahn, Hazem S. Awad, Reyner Loza, Nakysa Hooman, Robin Ericson, Dorota Drożdz, Amrit Kaur, Sevcan A. Bakkaloglu, Charlotte Samaille, Marsha Lee, Stephanie Tellier, Julia Thumfart, Marc Fila, Bradley A. Warady, Franz Schaefer, Claus P. Schmitt

Manuscripts, Articles, Book Chapters and Other Papers

INTRODUCTION: Fluid and salt overload in patients on dialysis result in high blood pressure (BP), left ventricular hypertrophy (LVH) and hemodynamic instability, resulting in cardiovascular morbidity.

METHODS: Analysis of 910 pediatric patients on maintenance hemodialysis/hemodiafiltration (HD/HDF), prospectively followed-up with 2758 observations recorded every 6-months in the International Pediatric Hemodialysis Network (IPHN).

RESULTS: Uncontrolled hypertension was present in 55% of observations, with 27% of patients exhibiting persistently elevated predialysis BP. Systolic and diastolic age- and height-standardized BP (BP-SDS) were independently associated with the number of antihypertensive medications (odds ratio [OR] = 1.47, 95% confidence interval 1.39-1.56, 1.36 [1.23-1.36]) and interdialytic weight …


June 2024, Robert Kelly Jun 2024

June 2024, Robert Kelly

Robert Kelly Manuscripts

No abstract provided.


Drug Use And Harm Reduction: Community Readiness As Pathway To Well-Being And Reintegration, Lauretta Ekanem Omale Jun 2024

Drug Use And Harm Reduction: Community Readiness As Pathway To Well-Being And Reintegration, Lauretta Ekanem Omale

Dissertations

Drug abuse negatively impacts the life and well-being of those who use drugs; this harm often extends to their loved ones, communities, and society. One presumptive set of psychological explanations for drug abuse is an addictive personality, a psychological susceptibility resulting from challenging family relationships, inadequate reinforcement, the absence of healthy role models, conflicting parental expectations, and a lack of love and respect. Harm reduction is a public health approach that focuses on minimizing the harmful effects of drugs and reducing judgment. It aims to meet people where they are in life and provide judgment-free, empathetic, supportive, and needed medical …


Persistence Of Female Faculty In Stem, Andrea Constantinou Jun 2024

Persistence Of Female Faculty In Stem, Andrea Constantinou

Dissertations

The lack of women entering certain STEM fields impacts female representation in research faculty, teacher faculty, and leadership positions in higher education. Through a narrative inquiry methodology utilizing the theoretical paradigms of self-determination theory and relational autonomy, this study extended understanding of the factors that motivate persistence for women in certain STEM fields. While prior research focused on understanding the barriers to retention, this study sought to identify the factors motivating retention for women in certain STEM fields. The results of this study contribute to understanding the motivating factors that influence a woman’s persistence in STEM. The data gathered from …


Professional Learning Communities: Structures And Implementation For Small Middle Schools And Singleton Teachers, Gerrie Aulisa Jun 2024

Professional Learning Communities: Structures And Implementation For Small Middle Schools And Singleton Teachers, Gerrie Aulisa

Dissertations

Professional Learning Communities are essential to building interdependent collaborative teacher teams to elevate teaching and learning for students. One struggle with implementing PLCs comes about when you have singleton teachers who do not have a colleague who teaches the same grade and content as them. This study reviewed the research-based PLC implementation strategies used at one small middle school. The main research question was: How can PLCs work effectively for small middle schools and singleton teachers? Other related questions were:

● How can PLCs feel relevant to our elective area teachers?

● What determines a successful PLC?

● Should middle …


Implementing And Evaluating Social-Emotional Learning Through Inquiry Research And Best Practice, Nada Abid Jun 2024

Implementing And Evaluating Social-Emotional Learning Through Inquiry Research And Best Practice, Nada Abid

Dissertations

Previous research has provided insight into the benefits of incorporating social-emotional learning (SEL) into the classroom, such as in the area of academic performance. As Jones et al. (2018) explained, “Children who can effectively manage their thinking, attention, and behavior are also more likely to have better grades and higher standardized test scores” (p. 15). I designed this research to examine the implementation of an SEL program and evaluate its effectiveness. The school’s multi-tiered system of supports(MTSS) team worked to implement the SEL program in the classrooms and chose two classrooms in which to pilot the program. The evaluation involved …


A Program Evaluation Of The Necessary Attributes, Accommodations, And Resources Neurodivergent Students Require For Success In Higher Education, Barbara Muñoz Jun 2024

A Program Evaluation Of The Necessary Attributes, Accommodations, And Resources Neurodivergent Students Require For Success In Higher Education, Barbara Muñoz

Dissertations

Without academic resources and accommodations, neurodivergent students with mild to moderate Learning Disabilities (LD) may be unable to navigate the academic challenges and rigor associated with college success. I used a mixed-methods research design to collect data from various stakeholders to determine the supports neurodivergent students with LD need to be successful in college. My findings indicated students need accommodations for their learning differences, access to assistive technology, access to counseling or mental health services, and access to specialized support personnel to be successful. I recommended a policy to ensure neurodivergent students and their caregivers are aware of post-secondary institutions …


Lucid Dream: Embracing Uncertainty, Zhiyun Zhang Jun 2024

Lucid Dream: Embracing Uncertainty, Zhiyun Zhang

Masters Theses

Glass is a tool, a projection surface, a medium for optical phenomena. It creates a tangible link between physical space and perception, transcending the physical realm to reshape our sensory perceptions and resonate within our psyche, deepening our understanding. Inspired by cosmic and natural phenomena, my installations narrate the contemplation of the moon and the appreciation of rainbows. They reference historic optical technologies, incorporating glass, mirrors, light, darkness, and space to produce an encounter that extends beyond personal experience, resonating with our collective unconscious, uniting us in profound ways. The blurred boundaries between observer and observed, reality and illusion, sensory …


An Abundance Of Caution, Gonçalo Preto Jorge Jun 2024

An Abundance Of Caution, Gonçalo Preto Jorge

Masters Theses

Abstract

An Abundance of Caution

3 puffs and breathing stabilizes...

Must have been the pollen last night.

Quiça

An eerie sense of emptiness takes over

And incidentally

The inability to express and verbalize any articulated thought.

Quiça

I seek sensations...experiences. To indulge.

The fascination with dreamscapes hails from the daunting lack of them.

Poooooxa

I listen, imagine, and process scenarios around me

In a precarious attempt to interpret and translate instances into something meaningful.

Oxalá, Matéria pictórica.

Oxalá.

I see my shadow but only an elusive silhouette

I observe the way it follows the wall and fades into the sidewalk, …


Sensorless Control Of Low Inductance Coreless Afpm Machines For Fault-Tolerant Operation Of Propulsion Systems, Yaser Chulaee, Ali Mohammadi, Aaron M. Cramer, Dan M. Ionel Jun 2024

Sensorless Control Of Low Inductance Coreless Afpm Machines For Fault-Tolerant Operation Of Propulsion Systems, Yaser Chulaee, Ali Mohammadi, Aaron M. Cramer, Dan M. Ionel

Electrical and Computer Engineering Graduate Research

In motor-drive systems utilized in safety-critical applications and demanding conditions like electric aircraft propulsion systems, the reliability of the system is greatly affected by position sensors, given their susceptibility within the motor drive system. Consequently, there is a need to eliminate sensors in vector-controlled motor drives to decrease overall hardware complexity and expenses, bolster the mechanical durability and dependability of the drive system. In this paper, a fault-tolerant sensorless control system for low inductance coreless axial flux PM (AFPM) machines, integrated into electric aircraft propulsion systems, is introduced. The proposed control system spans a wide operating range, from zero to …