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Motion History Images: A New Method For Tracking Microswimmers In 3d, Max Riekeles, Hadi Albalkhi, Megan Marie Dubay, Jay Nadeau, Christian A. Lindensmith May 2024

Motion History Images: A New Method For Tracking Microswimmers In 3d, Max Riekeles, Hadi Albalkhi, Megan Marie Dubay, Jay Nadeau, Christian A. Lindensmith

Physics Faculty Publications and Presentations

Quantitative tracking of rapidly moving micron-scale objects remains an elusive challenge in microscopy due to low signal-to-noise. This paper describes a novel method for tracking micron-sized motile organisms in off-axis Digital Holographic Microscope (DHM) raw holograms and/or reconstructions. We begin by processing the microscopic images with the previously reported Holographic Examination for Life-like Motility (HELM) software, which provides a variety of tracking outputs including motion history images (MHIs). MHIs are stills of videos where the frame-to-frame changes are indicated with color time-coding. This exposes tracks of objects that are difficult to identify in individual frames at a low signal-to-noise ratio. …


Trouble, Shu Li May 2024

Trouble, Shu Li

Olin Business School Graduate Student Theses and Dissertations

Generally, we do not want trouble, but oftentimes trouble is the most interesting thing in finance. This thesis has three essays related to trouble. The first essay suggests predictors of trouble (accounting fraud or financial distress) also predict excess returns for newly-listed firms. The second and third essays offer suggestions about what approaches best mitigate damage from nontraded wealth that can have trouble in the form of big losses. The second paper offers general results, including an indicator of when hedging is good and when it is bad, and the third essay provides technical results used in the second essay.


Essays On Tv Advertising, Donggwan Kim May 2024

Essays On Tv Advertising, Donggwan Kim

Olin Business School Graduate Student Theses and Dissertations

This dissertation consists of three chapters that attempt to understand the effects of both advertising quantity and content within the consumer finance and political domains. In the first chapter, I examine the effectiveness of TV advertising in promoting mortgage refinancing. It is well-documented that many mortgage borrowers make sub-optimal financial decisions by failing to refinance when interest rates are low, despite large potential savings. This paper studies the effectiveness of TV advertising on mortgage refinancing decisions. Using six years of mortgage origination and advertising data, I quantify the impact of TV advertising on consumers’ decisions to refinance their mortgages, as …


Essays In Behavioral And Experimental Economics, Yves-Paul Auffray May 2024

Essays In Behavioral And Experimental Economics, Yves-Paul Auffray

Arts & Sciences Graduate Student Theses and Dissertations

This dissertation consists of three self-contained articles in the field of Behavioral and Experimental Economics. Chapter one and three investigate the implications of non-standard preferences, i.e., social preferences for economic decision making. Another common theme in Behavioral Economics is that of bounded rationality. In chapter two, I look at correlation neglect, which is one example of bounded rationality. The first chapter "Circumstances, effort choice and redistribution," investigates the effects of differences in personal circumstances on individual effort choice and on income redistribution. I construct a model in which a worker’s production depends on a combination of circumstances, effort and unknown …


The Conceptual Design, Analysis And Optimization Of A Hydrogen Combustion And A Hydrogen Fuel-Cell Powered Aircraft, Michael Kiely May 2024

The Conceptual Design, Analysis And Optimization Of A Hydrogen Combustion And A Hydrogen Fuel-Cell Powered Aircraft, Michael Kiely

McKelvey School of Engineering Graduate Student Theses & Dissertations

In the effort to combat climate change worldwide, the aviation industry faces particularly complex design challenges in designing new, emission free vehicles. One potential solution to this problem is the use of hydrogen fuel as a means of propulsion. Hydrogen fuel has many benefits over traditional jet fuel such as a higher gravimetric energy density; however, it requires the aircraft to carry large, pressurized, cryogenic fuel tanks. This thesis examines the design challenges, potential solutions, and the analysis methods for the design of a short to medium range hydrogen powered commercial airliner. To accomplish this goal, a comprehensive conceptual design …


Draft Final 2024 Butte Priority Soils Operable Unit (Bpsou) Borrow Amendment Submittal #1, Pioneer Technical Services, Inc. May 2024

Draft Final 2024 Butte Priority Soils Operable Unit (Bpsou) Borrow Amendment Submittal #1, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.


Casi: A Framework For Cross-Timepoint Analysis Of Single-Cell Rna Sequencing Data, Yizhuo Wang, Christopher R Flowers, Michael Wang, Xuelin Huang, Ziyi Li May 2024

Casi: A Framework For Cross-Timepoint Analysis Of Single-Cell Rna Sequencing Data, Yizhuo Wang, Christopher R Flowers, Michael Wang, Xuelin Huang, Ziyi Li

Faculty, Staff and Student Publications

Single-cell RNA sequencing (scRNA-seq) technology has been widely used to study the differences in gene expression at the single cell level, providing insights into the research of cell development, differentiation, and functional heterogeneity. Various pipelines and workflows of scRNA-seq analysis have been developed but few considered multi-timepoint data specifically. In this study, we develop CASi, a comprehensive framework for analyzing multiple timepoints' scRNA-seq data, which provides users with: (1) cross-timepoint cell annotation, (2) detection of potentially novel cell types emerged over time, (3) visualization of cell population evolution, and (4) identification of temporal differentially expressed genes (tDEGs). Through comprehensive simulation …


Assessing The Effectiveness Of Treatment Programs Among Veterans With Opioid Use Disorder In New York State, Olatoye Oluwaseyi Itaniyi May 2024

Assessing The Effectiveness Of Treatment Programs Among Veterans With Opioid Use Disorder In New York State, Olatoye Oluwaseyi Itaniyi

Walden Dissertations and Doctoral Studies

New York State (NYS) is home to millions of veterans and has the fifth-largest veteran population in the country. Veterans represent a vulnerable population and are at higher risk for mental and physical health struggles. The focus of this quantitative study was to assess if there is any significant difference between pre- and post-OUD 24-hour detoxification treatment services, residential/rehabilitation treatment services, ambulatory outpatient treatment services, frequency of opioid use at discharge, and mental disorder among veterans with opioid use disorder in NYS when controlling for age, gender, race, and marital status. The study utilized the harm reduction framework and the …


Secondary School Teachers’ Perceptions Of Professional Development In An Urban School District In Liberia, Moses Blonkanjay Jackson May 2024

Secondary School Teachers’ Perceptions Of Professional Development In An Urban School District In Liberia, Moses Blonkanjay Jackson

Walden Dissertations and Doctoral Studies

Due to the low academic performance of Liberian students, in 2013, the president of Liberia declared that the education sector needed to be overhauled. Consequently, the education minister launched a nationwide professional development (PD) program. Despite the PD initiatives, academic performance in an urban school district (USD, a pseudonym) has not improved. The purpose of this qualitative study was to explore Liberian secondary teachers' perceptions on the strength, weakness, and recommended improvements of the PD at USD. The theoretical framework that guided the study was Mezirow’s transformational learning theory. The key research questions were focused on the secondary school teachers’ …


Influence Of Leader's Mental Health Skills On Emergency Call-Taker And Dispatcher Well-Being, Chenetra Washington May 2024

Influence Of Leader's Mental Health Skills On Emergency Call-Taker And Dispatcher Well-Being, Chenetra Washington

Walden Dissertations and Doctoral Studies

In 2021, researchers reported that nearly half of emergency responder personnel who are continuously exposed to traumatic incidents will test positive for one or more forms of mental illness. The purpose of this descriptive qualitative phenomenological study was to describe and identify the lived experiences of emergency call-takers and dispatchers by identifying how their leader’s mental health skills influence their well-being in the emergency management industry. This study was framed by Bertalanffy’s general systems theory and Husserl’s origins of consciousness concept. Using a qualitative research design, data were collected and triangulated from 10 semistructured interviews, reflective and descriptive fields notes, …


Textbook Affordability Committee Minutes, May 9, 2024, Illinois State University, Textbook Affordability Committee May 2024

Textbook Affordability Committee Minutes, May 9, 2024, Illinois State University, Textbook Affordability Committee

Textbook Affordability Committee

No abstract provided.


Internal Hernias, Abdalah Ismail May 2024

Internal Hernias, Abdalah Ismail

Aurora GME

No abstract provided.


Public Perception Of Service, Therapy, And Emotional Support Animals In A College Setting, Elizabeth Demarse May 2024

Public Perception Of Service, Therapy, And Emotional Support Animals In A College Setting, Elizabeth Demarse

Honors College Theses

The use of service dogs, emotional support dogs and therapy dogs continues to increase, they are likewise becoming more common on college campuses. However, outside of a 2017 survey into the general population, there is little data into the public’s ability to define these animals and their roles or how negative press affects trust in the legitimacy of these animals. Additionally, no research has been done into how this affects college students despite college campuses frequently being a location where assistance animal ownership is brought into question. An anonymous survey was conducted and distributed online to students at Murray State …


Inducible Crispr-Targeted ‘Knockdown’ Of Human Gut Bacteroides In Mice Reveals Glycan Utilization Strategies, Zachary Beller May 2024

Inducible Crispr-Targeted ‘Knockdown’ Of Human Gut Bacteroides In Mice Reveals Glycan Utilization Strategies, Zachary Beller

Arts & Sciences Graduate Student Theses and Dissertations

Learning how members of the human gut microbiota compete and cooperate for dietary nutrients, such as fiber-associated glycans, should help facilitate development of more precise nutritional recommendations for improving health. To model how bacteria prioritize the utilization of different fiber glycans in the mammalian gut, germ-free mice were colonized with a 13-member consortium of cultured, genome-sequenced human bacterial strains, including seven Bacteroides species. Animals were fed a Western diet supplemented with pea fiber. Once the consortium had time to assemble, an inducible CRISPR-based system was used to deplete the absolute abundance of Bacteroides thetaiotaomicron or B. cellulosilyticus by 10- to …


A Big Voice In A Small Democracy: Three Papers On American Local Politics, Lucas Boschelli May 2024

A Big Voice In A Small Democracy: Three Papers On American Local Politics, Lucas Boschelli

Arts & Sciences Graduate Student Theses and Dissertations

An individual's greatest political voice is often within America's smallest democracies. Through three papers, this dissertation explores three key dimensions of political participation within America's local governments: representation, evaluation, and coverage. The first paper explores the question of whether a more accessible local government is a more representative one. By leveraging the switch to online meetings induced by the COVID-19 pandemic, I analyze whether the shift to more accessible meetings promotes healthy democratic participation or amplifies pre-existing inequities in local political participation. To accomplish this, I first construct a novel dataset of public meeting minutes from 2018 until 2022 for …


Infrared Magneto-Spectroscopy Of Correlated Electron Systems In Graphene, Yashika Kapoor May 2024

Infrared Magneto-Spectroscopy Of Correlated Electron Systems In Graphene, Yashika Kapoor

Arts & Sciences Graduate Student Theses and Dissertations

Van der Waals (vdW) heterostructures represent a novel class of artificial materials created by layering atomically thin planar crystals and offer a promising platform for band structure engineering. Here, we focus on a vdW heterostructure of monolayer graphene (G) coupled to a hexagonal boron nitride (h-BN). We utilize cyclotron resonance (CR) spectroscopy as a primary investigative tool for probing the interacting Dirac fermions in graphene. This work presents a system capable of conducting broadband far- to mid-infrared CR spectroscopy in high magnetic fields and ultra-low temperatures. Our study investigates the influence of the h-BN substrate on the properties of graphene …


Tongue Posture And Effects On Overall Health: A Dental Hygiene Curriculum Assessment, Kelly Brackeen May 2024

Tongue Posture And Effects On Overall Health: A Dental Hygiene Curriculum Assessment, Kelly Brackeen

Dental Hygiene ETDs

Research shows that proper tongue posture can impact quality of life, stability of the mouth, and have effects on overall wellness. Dental hygienists have a unique position to be able to identify tongue placement disorders. The objective of this study was to identify to what extent dental hygiene students are being taught orofacial myofunction during dental hygiene education. A survey link was emailed to all program directors in the United States regarding the teaching of orofacial myofunction within their respective programs. Using descriptive analysis, 44%, or less than half reported that their program curriculum includes teaching students proper resting position …


The Legality Of Liberation: Exploring The Right To Organized Armed Resistance Against The U.S. State By Afro-Descendants Under International Human Rights Law, Laura Molik May 2024

The Legality Of Liberation: Exploring The Right To Organized Armed Resistance Against The U.S. State By Afro-Descendants Under International Human Rights Law, Laura Molik

Northwestern Law Journal des Refusés

No abstract provided.


An Old-Fashioned Bluebook Burning, Paul Gowder May 2024

An Old-Fashioned Bluebook Burning, Paul Gowder

Northwestern Law Journal des Refusés

No abstract provided.


Tissue Management For Indirect Restorations Using Gingival Retraction Systems, Summer Youssef, Punyatoya Parichha, Asmaa Elbegirmy May 2024

Tissue Management For Indirect Restorations Using Gingival Retraction Systems, Summer Youssef, Punyatoya Parichha, Asmaa Elbegirmy

Excellence Day

Abstract: Objectives: The objective of this study is to compare the effectiveness of different gingival retraction systems, including cords, paste, and laser, for creating adequate gingival retraction in preparation for indirect restorations. Methods: A comprehensive review of the literature was conducted to gather relevant studies and clinical trials comparing the use of cords, paste, and laser for gingival retraction. Various databases including PubMed, Cochrane Library, and Google Scholar were searched. Studies were included based on their relevance to the topic and their methodological rigor. Results: The review revealed that each gingival retraction system has its own advantages and limitations. Traditional …


Resolving Anterior Cross Bite And Titrating Implant Spaces With Full Fixed Applicances And Tads (Temporary Anchorage Device, Seung Ah Jung May 2024

Resolving Anterior Cross Bite And Titrating Implant Spaces With Full Fixed Applicances And Tads (Temporary Anchorage Device, Seung Ah Jung

Excellence Day

This patient reported to the orthodontic clinic with a chief concern of anterior cross bite and multiple non-restorable posterior teeth. Patient had full cusp class III molar and canine relationship bilaterally, with anterior cross bite from #7 to #11. Patient also presented with multiple teeth with severe decay, failed root canal treatment, pulp polyp, and fracture. She was planned for extraction of #29, #30, #18, #19, #1, and #16. She hoped to get a minimum amount of implant restorations as possible after extraction and orthodontic treatment. Full fixed appliance and two anterior TADs (temporary anchorage device) were used for her …


Lateral Substitution With Full Fixed Appliances, Jeff Roseth, Edrick Tan May 2024

Lateral Substitution With Full Fixed Appliances, Jeff Roseth, Edrick Tan

Excellence Day

This patient reported to the orthodontic clinic with a chief concern of crowding in the maxillary and mandibular arches. The patient had previous trauma to her U1s during a biking accident about 5 years prior to coming in for her initial ortho consultation. U1s were previously restored with root canals and composite fillings. Upon re-evaluation of root canals at UOP prior to starting ortho treatment, it was determined that the prognosis for UL1 was hopeless and UR1 needed new root canal therapy. With consults from the Endo, Ortho and restorative departments, it was determined that the treatment plan would include …


Restoring The Anterior Esthetic Zon And Closing Spaces For A Growing Female With Multiple Missing And Impacted Teeth, Kristen Lo May 2024

Restoring The Anterior Esthetic Zon And Closing Spaces For A Growing Female With Multiple Missing And Impacted Teeth, Kristen Lo

Excellence Day

A 13 year old female presented to the orthodontic clinic with a chief concern of "I want to fix my teeth." Her initial soft tissue profile was convex with incompetent lips, mentalis strain, and a labiomentla sulcus. She presented with a skeletal Cl II malocclusion, molars half cusp class II bilaterally, and congenitally missing upper laterals and upper second premolars as well as impacted lower second premolars. Her upper and lower incisors were severely proclined, and she had an overjet of 8mm. The goals of treatment were to achieve competent lips and improve mentalis strain. We maintained spaces for future …


Demystifying Cracked-Tooth Syndrome: An Evidence-Based Approach To Diagnosis And Treatment Planning, Siavash Ghardiri Zahrani May 2024

Demystifying Cracked-Tooth Syndrome: An Evidence-Based Approach To Diagnosis And Treatment Planning, Siavash Ghardiri Zahrani

Excellence Day

The importance of accurate diagnosis and appropriate treatment planning is more important than ever due to the increasing rate of cracked teeth being observed in our profession. It is thus imperative that dentists be able to assess and address the etiology of cracked teeth, use evidence-based methods to reach a treatment decision, and convey thorough patient education regarding risks, benefits, alternatives and prognosis of appropriate treatments. Put simply, not all cracked teeth require root canal treatment, and one must be able to discern exactly when RCT is indicated and when it is not. This project is a case presentation of …


Restoration Of Oral Function In Severe Tooth Erosion Arising From Gastroesophageal Reflux Disease (Gerd): A Clinical Case Study, Xinyue (Cinny) Ma May 2024

Restoration Of Oral Function In Severe Tooth Erosion Arising From Gastroesophageal Reflux Disease (Gerd): A Clinical Case Study, Xinyue (Cinny) Ma

Excellence Day

Gastroesophageal reflux disease (GERD) poses significant challenges to systemic and oral health, often resulting in severe erosive tooth wear and dentin hypersensitivity. This clinical case study focused on the restoration of oral function through the utilization of fixed and removable prosthetics to reconstruct the occlusal plane. The patient underwent a comprehensive treatment plan aimed at restoring lost tooth structure and restoring chewing functions. Tooth-colored composite restorations, monolithic Zirconia crowns, and partial dentures were strategically employed to rebuild the occlusal plane, alleviate dentin hypersensitivity and improve masticatory function. This case highlights the importance of a multidisciplinary approach in managing severe tooth …


Attempting Heroics: Restoring Buccally Angulated Implants, Ryan Leong May 2024

Attempting Heroics: Restoring Buccally Angulated Implants, Ryan Leong

Excellence Day

Buccally placed tissue-level implants in the esthetic zone may encounter various challenges, particularly concerning the trajectory of the screw channel and the implant body's placement. In this case, while addressing an edentulous space in the upper left quadrant with an implant bridge spanning from #12 to #14 it became evident that #12 was far too buccally placed. To address this issue, #14 was designed for screw retention, while #12 was planned for cement retention to accommodate the screw channel exiting through the buccal cusp. Although this method may seem to make the cement retained aspect of the restoration unretrievable, using …


Perio-Pros Interdisciplinary Smile Reconstruction Case Report, Katherine Chen May 2024

Perio-Pros Interdisciplinary Smile Reconstruction Case Report, Katherine Chen

Excellence Day

Summary of Project: The poster will show a step by step treatment plan and clinical progress of a maxillary anterior perio and pros smile reconstruction with extraction and bone grafting, crown lengthening, RCT, post and core, #7-10 crowns to correct a canted smile, gummy smile, fractured teeth due to bruxism Significance: This case will demonstrate the importance of interdisciplinary treatment planning. Acknowledgements: Dr. Wong, Dr. Woo, Dr. Huynh, all restorative AEGD attendings, and most importantly, my patient Robert Chisick


Full Mouth Rehabilitation: Turning Back The Clock With An Esthetic Result, Vineet Gangadharan May 2024

Full Mouth Rehabilitation: Turning Back The Clock With An Esthetic Result, Vineet Gangadharan

Excellence Day

This case is about the dental management of a 78-year-old male patient with significant systemic health issues, including hypertension, hyperlipidemia, and polycythemia vera, under treatment with valsartan and atorvastatin. The patient expressed a desire to improve his dental aesthetics, particularly through the application of veneers. Clinical examination revealed an edentulous space at the locations corresponding to teeth #19 and #30, with #30 fractured at the gumline, and incisal chipping of the lower anterior teeth. The treatment plan was multifaceted, prioritizing the stabilization of the patient's periodontal health through prophylactic cleaning, followed by caries control. This involved resin fillings on teeth …


Aesthetic & Functional Oral Rehabilitation: A Multi-Disciplinary Case Involving Periodontics, Orthodontics, Implants, Veneers, And Crowns, Siavash Ghardiri Zahrani May 2024

Aesthetic & Functional Oral Rehabilitation: A Multi-Disciplinary Case Involving Periodontics, Orthodontics, Implants, Veneers, And Crowns, Siavash Ghardiri Zahrani

Excellence Day

A truly multidisciplinary case, this project is a case presentation of a patient who recently finished orthodontic treatment and has been wanting implants and veneers since becoming a patient in 2016. Prosthodontic treatment plan consists of 4 implants (sites 3, 13, 19, 30), 7 veneers (sites 4, 5, 6, 7, 8, 11, 12), and 3 crowns (sites 9,10,14). The patient is acutely aesthetically conscious, so we strived to deliver the best results possible via extensive, detailed, open communication with the lab. Challenges included the lack of proper posterior support and minimal contacts, management of patient expectations, as well as time …


Assessing Knowledge Of Cleft Lip And Palate Among Dental Students At The Universtiy Of Pacific Arthur A. Dugoni School Of Dentistry, Niki Panahi Zadeh, Simin Charkhzarri, Miroslav Tolar, Marie Tolarova May 2024

Assessing Knowledge Of Cleft Lip And Palate Among Dental Students At The Universtiy Of Pacific Arthur A. Dugoni School Of Dentistry, Niki Panahi Zadeh, Simin Charkhzarri, Miroslav Tolar, Marie Tolarova

Excellence Day

Objectives: Orofacial clefts (OFC) are among the most common congenital anomalies, the most severe congenital anomalies of the orofacial region, requiring long and challenging multidisciplinary treatment. There is no doubt that all dental providers meet in their practice patients with OFC. Their knowledge, skills and experience are reflected in treatment outcomes. Methods: We created an anonymous Qualtrics survey to assess the basic knowledge about OFC among Arthur A. Dugoni School of Dentistry students and orthodontic residents. It consists of 20 questions, including etiology, prevalence, and prevention of clefts and other congenital anomalies. The study continues and so far results are …