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Great Lakes And Its Regional Climate In The Future, Miraj Bhakta Kayastha

Dissertations, Master's Theses and Master's Reports

The overarching objective of this dissertation is to enhance our predictive understanding of the Great Lakes regional climate by utilizing advanced modeling techniques and provide comprehensive insights into the future of the Great Lakes. This dissertation focuses on four areas pertinent to the future of the Great Lakes hydroclimate and extreme events, beginning with the derivation of robust water level projections for the Great Lakes in Chapter 2. Using a regional climate modeling system with a two-way coupled three-dimensional (3D) hydrodynamic lake and ice model for the Great lakes, we analyze long-term future changes in the over-lake precipitation, lake evaporation, …

Near-Infrared Fluorescent Cyanine Probes For Monitoring Nad(P)H Dynamics In Living Cells And Drosophila Larvae, May Waters

Dissertations, Master's Theses and Master's Reports

Nicotinamide adenine dinucleotide (NAD+/NADH) plays a critical role in cellular metabolism, with abnormally elevated NADH levels linked to disrupted metabolic processes and cancer. In this study, we developed near-infrared fluorescent probes to selectively measure NADH concentrations. We present five cyanine-based probes, which were optimized by modifying the connection bridges to fine tune electronics. Two NAD(P)H-biosensing probes consisting of 1,3,3-trimethyl-3H-indolium and 3-quinolinium acceptors, linked by thiophene, A, and 3,4-ethylenedioxythiophene, B, bridges are detailed. They exhibit near-infrared fluorescence at 742.1 nm and 727.2 nm for probes A and B, respectively, and generate absorbance signals at 690.6 nm and 685.9 nm. Probe A …

From Conscientious French Canadian To Enterprising American: Making Memory & Measuring Social Mobility Of French Canadians 1880-1940, Brooke S. Schwaderer

Dissertations, Master's Theses and Master's Reports

This thesis studies the social mobility of French-Canadian immigrants to the Keweenaw Peninsula 1880-1940 and memory among their descendants to explain how French-Canadian culture in the Keweenaw faded over time. Oral histories were conducted to gain an understanding of the current French-Canadian culture in the Keweenaw, understand how the current generation perceives changes in culture over time, and provide possible explanations for why French-Canadians thrived in the Keweenaw. Tax records from the Michigan Technological University Archives and social mobility scores, mother tongue, and homeownership information from the United States census was analyzed to measure language loss, and the social mobility …

Utilizing Biometrics And Blockchain For Enhanced Security Of Remote Patient Monitoring (Rpm) Data Sharing, Amaturrahman Raihanah Medlock

Dissertations, Master's Theses and Master's Reports

Advancements in Artificial Intelligence (AI) and Internet of Medical Things (IoMT) technologies have significantly revolutionized the conventional healthcare systems. Through the integration of smart devices, medical sensors, and communication technology, IoMT provides real-time patient’s monitoring data for healthcare providers, thus promoting accurate and timely clinical decisions for patient-centric care. The current healthcare sector is evolving to a connected ecosystem with connectivity and intelligence. While it also incurs increasing security and privacy concerns as integrating IoMT generated patient monitoring data into healthcare information systems. Both blockchain and biometrics are measures that have established reputable names in the security realm. When evaluating …

Sugar Maple (Acer Saccharum Marsh.) Tree-Ring Growth And Carbon Stable Isotope Responses To Nitrogen And Climate, Libbie Ring

Dissertations, Master's Theses and Master's Reports

This dendrochronological and stable carbon isotope study used tree rings from sugar maple (Acer Saccharum Marsh.) collected at long-term nitrogen (N) amended sites throughout Michigan to understand N amendment and deposition, climate, and growth relationships. Climate responses varied by site, however, we found importance in grouping sites by “productivity” which is related to inherent N and soil nutrients. Our results did not detect an overall effect of N amendments on growth during the treatment period. However, data shows N amendments benefiting larger diameter trees, while smaller diameter trees responded more positively without amendments, especially on more productive sites. Results …

Studying The Hadronic Nature Of Ultra-High-Energy Gamma-Ray Emission Using Wide-Field-Of-View Instruments, Rhiannon M. Turner

Dissertations, Master's Theses and Master's Reports

Since the discovery of cosmic rays, i.e., protons, electrons, and atomic nuclei originating from space, and the birth of astroparticle physics, scientists have searched for the most energetic particle accelerators in our galaxy. PeVatrons are astrophysical objects capable of accelerating cosmic rays to peta-electronvolt energies. Studying the nature of PeVatrons allows scientists to study particle physics at energies three orders of magnitude higher than those achievable with Earth-based particle accelerators. While PeVatrons can accelerate both electrons and protons, it is thought that searching for hadronic PeVatrons is more fruitful, given the limitations of accelerating electrons to such high energies. In …

Characterization Of Krypton Performance In A Laboratory 300 W Magnetically Shielded Hall-Effect Thruster, Jacob Henry Knott

Dissertations, Master's Theses and Master's Reports

Xenon has long been the propellant of choice in Hall Thrusters; however, significant work has been performed to produce thrusters capable of utilizing alternate propellants due to xenon’s price and scarcity. Krypton is the most similar alternative propellant to xenon. This work examines the performance of a sub-kilowatt magnetically shielded Hall Thruster operating on both xenon and krypton. Krypton produced lower thrust, specific impulse, and was less efficient than xenon. Specifically, the absolute xenon-krypton efficiency gap was 6 to 24 % . Krypton’s inferior efficiency is primarily attributable to differences in mass utilization and beam divergence losses. The impacts of …

Measuring Occupant Controlled Ventilation And Cooking Frequency To Aid In Modeling Energy Performance Of Northern Michigan Homes, Jacob J. Chizek

Dissertations, Master's Theses and Master's Reports

This research investigates the real-world interplay between energy efficiency and indoor air quality. We explore how home ventilation strategies, heating systems, and weatherization levels in rural homes interact. As part of a larger study on air quality, 17 homes participated in the study. Specifically, this research shows the results and methods for monitoring cooking frequency, kitchen range hood use, and bathroom fan use over two, month-long study periods to build accurate energy and contaminant transport models of homes that were studied. Energy audits to document home characteristics were conducted, including blower door testing and detailed qualitative data regarding the homes’ …

Quantifying So₂ Emissions From Explosive Events Of The 2021 La Soufrière Eruption Using Dscovr/Epic, Yuxi Jin

Dissertations, Master's Theses and Master's Reports

Volcanic eruptions release large quantities of gases, including sulfur dioxide (SO₂), aerosol precursors, and ash into the atmosphere. Quantifying the emission fluxes and temporal variability of SO₂ is crucial for understanding volcanic processes and assessing their impacts on air quality, climate, and aviation safety. Episodic vulcanian to sub-Plinian explosive eruptions are a common feature of many arc volcanoes, but the underlying causes of such episodic behavior remain poorly understood. The 2021 La Soufrière eruption (St. Vincent) featured up to 40 discrete eruptive events between April 9 and April 22, presenting a rare opportunity to analyze time-resolved volcanic SO₂ emissions during …

Growth, Survival, And Herbivore Browsing Preferences Of Seedlings Planted In Black Ash Stands Of Northern Michigan And Wisconsin, Seth W. Davenport

Dissertations, Master's Theses and Master's Reports

To mitigate the cascading ecosystem impacts of widespread black ash (Fraxinus nigra) mortality due to the invasive emerald ash borer (Agrilus planipennis), forested wetlands can be underplanted with seedlings of alternative species that later repopulate the vacated canopy. This study examined the survival and growth, factors influencing performance, and herbivore browsing preferences of seven non-ash species planted in northern Michigan and Wisconsin. The best performing species were river birch (Betula nigra), silver maple (Acer saccharinum), and swamp white oak (Quercus bicolor). The worst performing species was black spruce (Picea …

Methods In Statistics, Machine Learning, And Deep Learning For Combining Multi-Omics Dataset, Md Mutasim Billah

Dissertations, Master's Theses and Master's Reports

Transcriptome-wide association studies (TWAS) have emerged as a powerful strategy to bridge genome-wide association studies (GWAS) with gene regulatory mechanisms by integrating genotypic data with gene expression data. While early TWAS methods typically rely on linear models and single-tissue expression references, recent advances underscore the need for flexible, multi-tissue approaches that can capture heterogeneous regulatory architectures and tissue-specific expression patterns. This dissertation introduces a three‑part research project that advances multi‑tissue transcriptome‑wide association studies (TWAS) along complementary axes of methodology, statistical power, and modelling flexibility.

In chapter One, TWAS‑CTL introduces a two‑stage cross‑tissue learner that trains any user‑chosen single‑tissue imputers (STLs) …

Analysis Of Lava Flow Paths Using Remote Sensing And Geomorphological Techniques, Oluwatosin Oluyemisi Ayo

Dissertations, Master's Theses and Master's Reports

Lava flows have severe impacts on the Earth’s surface, communities, and natural habitats. Accurate modeling of lava flow paths is crucial for volcanic hazard assessment and risk mitigation. This research integrated remote sensing, geographic information systems, geomorphological techniques, and hydrologic analysis to numerically determine the optimal ground sample distance (GSD) of digital elevation models (DEMs) for delineating lava flow paths. Two volcanic regions were analyzed: the Afar Region of Ethiopia (Alu, Dalaffilla, and Erta Ale volcanoes) and the Reykjanes Peninsula of Iceland (Fagradalsfjall volcano). Forward and backward modeling methods were used to simulate potential lava flow paths. Remote sensing data, …

Comprehensive Analysis Of Krauklis Waves And Long Period Seismic Events In Fluid-Filled Fractures Via Integrated Physical And Numerical Modeling, Sananda Ray

Dissertations, Master's Theses and Master's Reports

Long-period (LP) seismic events, commonly recorded in volcanic and hydrothermal environments, are widely attributed to the resonance of fluid-filled fractures and the excitation of Krauklis waves along the solid-fluid interface. These low-velocity, dispersive waves are sensitive to both fluid dynamics and fracture geometry, offering critical insights into subsurface fluid transport, fracture evolution, and seismic source processes. Despite robust theoretical treatments, experimental validation under realistic geological conditions has remained limited. To address this, I aimed to develop a series of laboratory-based experimental models that systematically investigate the key physical mechanisms driving LP signal generation. In the first set of experiments, I …

Risk Of Oak Wilt Expanding Northward: Examining Nitidulidae Vector Communities And Host Phenology Beyond The Current Disease Range, Kathleen E. Bershing

Dissertations, Master's Theses and Master's Reports

Oak wilt is a fatal fungal pathogen to oak trees, caused by the fungus Bretziella fagacearum. This fungus targets oak species (Quercus spp.), where members of the red oak group (sect. Lobatae) are at greatest risk of mortality. Oak wilt is widespread throughout the eastern United States, currently present in 24 states. Recently in 2023, oak wilt was detected in trees for the first time in Canada. Although removed from the locations of the first Canadian detections, there is continual concern that the range of oak wilt is at risk for expansion northward. This is further evident …

Numerical Modelling And Co-Optimization Of Gasoline Fuels For Gasoline Compression Ignition Using Multi Component Approach, Ashwin Karthik Purushothaman

Dissertations, Master's Theses and Master's Reports

Future mobility is expected to rely on a broad spectrum of powertrain technologies, including battery electric vehicles (BEVs), hybrid electric vehicles (HEVs), fuel cell electric vehicles (FCEVs) and traditional internal combustion engine (ICE) vehicles. Despite the shift toward electrification, internal combustion engines are projected to remain a key component of future powertrains, either as the primary power source or as range extenders to generate electricity in hybrid systems. As such, significant research efforts continue to focus on enhancing the efficiency and reducing the emissions of ICEs to meet increasingly stringent regulatory and environmental targets. Gasoline compression ignition (GCI) has been …

Effects Of Invigorating And Relaxing Music On Heart Rate, Blood Pressure, And Heart Rate Variability, Matthew Joshua Faur

Honors Undergraduate Theses

Heart-rate variability (HRV) has been documented to correlate with several health measures, including autonomic nervous system longevity and athletic performance (Zulfiqar, 2010). While increasing age does not affect heart rate, there is a steady decline in HRV, which is a biological marker of aging and the decline of autonomic nervous system function. Furthermore, men who exercise regularly tend to have increased HRV, suggesting a mitigation of the typical age-dependent loss of HRV (Kristal-Boneh et al., 1995). Previous studies have suggested that music may have a physiological effect (e.g., fluctuating vitals, emotional changes) on cardiovascular parameters. However, little is known about …

Does Money Matter? An Analysis Between Per-Student Funding And Its Link To Student Achievement In Florida, Chloe Zwetschkenbaum

Honors Undergraduate Theses

This study examined the relationship between per-student funding and student achievement within four counties in the state of Florida (Clay County, Duval County, Flagler County, and St. Johns County) and whether higher per-student funding resulted in higher student achievement. Florida recently changed from the usage of the Common Core Standards to the Florida Benchmarks for Excellent Student Thinking (B.E.S.T.) and from the Florida State Assessment (FSA) to the Florida Assessment of Student Thinking (F.A.S.T.) test in 2022 (Sabina, Hartikka, and Viola, 2023). This research focused funding on the results of the F.A.S.T. test and the per-student funding of each district …

A Review Of The Utilization Of Comics In Research And The Potential For Graphic Medicine Integration In Health Science Communication, Nagatarang Nimmathota

Honors Undergraduate Theses

Communication is a vital part of research, both during its conduction and the dissemination of its findings. This can be difficult to achieve due to factors like knowledge disparity, technical jargon, and differing backgrounds. This narrative literature review draws from databases like PubMed, ScienceDirect, and others to examine the current utilization of graphic medicine in research and its effects on health research communication. This review found that the integration of graphic medicine can help alleviate those issues by simplifying complex topics into engaging visual narratives or comics for consumption by research participants and the public. Additionally, the use of graphic …

A Survival Horror Video Game's Impact On Visual Attention, Alicia D. Sprague

Honors Undergraduate Theses

The current study’s main research question was whether playing a survival horror video game increases the visual selective attention of a player. This project examined how visual attention and anxiety levels differ after playing a survival horror video game and whether an individual’s gaming preferences affect these concepts. The research consisted of the preliminary evaluation of participants’ visual attention abilities and anxiety levels through psychological tasks. Participants then played Resident Evil 4: Chainsaw Demo, the selected survival horror video game for this study. After playing the demo, participants repeated the previous psychological tasks, and their results were assessed. Results …

Respiratory Cycle Influence On Lumbosacral Muscle Function: A Tensiomyographic Analysis, Anthony Trombetta

Honors Undergraduate Theses

Introduction:

Tensiomyography (TMG) has significant potential in examining muscle functionality while evading the limitations found in other methods muscle analysis. Specifically, the erector spinae and other lumbosacral muscles can be analyzed with little challenge. Such analyses include data on muscle displacement (Dm), delay time (Td), contraction time (Tc), half-relaxation time (Tr), and sustain time (Ts). Of these parameters, the most evaluated and with the highest level of reliability are Dm, Td, and Tc. However, stiffness of the lumbar spine and lumbosacral muscles fluctuates throughout the respiratory cycle. These fluctuations may pose an issue when examining the functionality of muscles. This …

Parisians' Perceptions Of The 2024 Olympics: A Mixed-Methods Analysis Of Local Attitudes Towards Housing Epidemics Using Social Exchange Theory, Place Attachment, And Media Framing Theory, Tyler Borges

Honors Undergraduate Theses

The Paris 2024 Olympics introduced significant socio-economic transformations to the city, particularly in the areas of housing policy, urban development, and community displacement. This study examines Paris residents' perceptions of these changes using a mixed-methods approach that integrates sentiment analysis and media framing analysis. The research is guided by Social Exchange Theory (SET), Place Attachment Theory, and Media Framing Theory to understand the relationship between public sentiment, urban transformation, and media narratives. Findings indicate that the perceived effects of the Paris 2024 Olympics on its host city were overwhelmingly negative, with consistent concerns centered on housing insecurity, displacement, and a …

The Association Between Parental Bipolar Symptoms And Offspring Identity Formation: The Role Of Parental Attachment And Emotion Regulation, Alexa D. Loonam

Honors Undergraduate Theses

Identity development involves integrating various aspects of oneself into a unified self-concept; however, maladaptive identity formation can lead to negative mental health outcomes (Berman & Weems, 2016). Growing up with a caregiver exhibiting unpredictable behaviors may hinder this process, leaving children vulnerable during this critical stage (Schwartz & Petrova, 2018). The current study evaluated how bipolar symptoms among parents may impact one’s identity. College students (N = 399) completed an anonymous online survey battery for course credit. Results revealed that parental bipolar symptoms were positively correlated with ruminative identity exploration, identity distress, disturbed (unstable) identity, and lack of identity, …

Impact Of Tgf-Β And Twist1 On Motility And Proliferation In Estradiol-Treated Mcf-7 Tamr Cells In-Vitro, Thomas L. Scott Iii

Honors Undergraduate Theses

Breast cancer is a highly malignant cancer and is known to be grouped into three main types: adenocarcinoma, invasive ductal carcinoma (IDC) and ductal carcinoma. Breast cancer commonly arises as adenocarcinoma, located in the milk ducts, and becomes IDC when it spreads into the surrounding tissue from the influence of cytokines and hormones. This study outlines the rate of proliferation and motility of a type of adenocarcinoma, MCF-7-TamR, to become invasive ductal carcinoma when Twist1 is downregulated and exposed to TGF- and estradiol (E2) in-vitro. We hypothesize that the downregulation of Twist1 will reduce cell adhesion and cytoskeleton proteins …

The Aerodynamics Of Bird Perching: Understanding Wing And Body Interactions In Pigeon Flight, Anirudh Sriram

Honors Undergraduate Theses

During landing, birds often execute a perching maneuver. The perching maneuver refers to the complex series of actions that birds, and pigeons in particular, will perform when landing. They will typically decelerate by pitching their body to a high angle of attack and spreading their wings. It is believed to help achieve better control and reach optimal lift and drag coefficients. This study seeks to better understand the vortex interactions between the main and tail wings during this maneuver. However, it is still an unexplored phenomenon. Thus, two bird models were conceived to analyze it, one with and one without …

Tools And Trends: An Analysis Of Maya Dental Modification, Channing M. Cook

Honors Undergraduate Theses

The ancient Maya practiced dental modification, intentionally filing, incising, and inlaying stones into the front teeth, potentially to display identity and status. The literature surrounding Maya dental modification tends to overlook mechanical aspects of the process, and many studies approach dental modification through limiting or destructive means. Optical microscopy presents an adaptable, cost-effective option for closer inquiry. Preliminary research suggests the process of dental modification leaves distinct patterns of tool use, depending on style, that can be identified through optical microscopy. The sample selected includes 25 incisors and canines from 14 Classic period Maya individuals from Altun Ha, representing 12 …

The Inverse Scattering Transform For The Nonlinear Schrödinger Equation, Ivan Casas-Rocha

Honors Undergraduate Theses

The Nonlinear Schrödinger (NLS) Equation, iψ_t + 1/2 ψ_xx ± |ψ|²ψ = 0, is a nonlinear partial differential equation which is used to model several physical phenomena including nonlinear effects inside optical fibers and the formation of rogue waves in shallow water. It is particu- larly difficult to study solutions to this equation due to the nonlinearity, and the nonlinearity leads to incredibly interesting solutions not found in linear PDEs such as solitons. In this thesis, we highlight two methods of obtaining solutions to the (NLS) equation: the Inverse Scattering Transform and the Dressing Method. Furthermore, …

Digital Recess, Screen Time Split: The Impact Of Online Schooling On Recreational Screen Time And Their Dual Impact On Anxiety, Meagan Allender

Honors Undergraduate Theses

This study explores the influence of online schooling, anxiety, and recreational screen time in college aged students. Previous studies have shown a positive correlation between screen usage and anxiety scores, assessing either online school or total screen time on anxiety. However, no study had looked at the correlation between online schooling and recreational screen time, nor had any study assessed both their effects on anxiety at the same time. Using a sample of 71 participants, a bivariate regression was conducted to evaluate the correlation of each type of screen time with one another, then another regression was run to assess …

Lost Innocence, Mateo Valdivieso

Honors Undergraduate Theses

Human trafficking is defined as involving “force, fraud, or coercion to obtain some type of labor or commercial sex act” (U.S. Department of Homeland Security). It disproportionately affects vulnerable populations, particularly children within the U.S. welfare system. This research aims to analyze the characteristics of this system that produce vulnerabilities in welfare children that heighten their risk of being trafficked. The study focuses on socio-economic, psychological, and environmental vulnerabilities, examining how these factors, combined with increased internet accessibility, exacerbate the risks of trafficking. Using a qualitative approach, the research uses secondary data from peer-reviewed journal articles, government reports, and reputable …

Heritage And Archaeological Knowledge Dissemination Strategies: A Kurd Qaburstan Case Study, Myli R. Sangria

Honors Undergraduate Theses

This thesis addresses the long-standing absence of community archaeology initiatives in the Kurdistan Region of Iraq by designing and implementing a pilot public archaeology program at the site of Kurd Qaburstan, a large Middle Bronze Age city (ca. 1800 BCE) located on the Erbil Plain. In summer 2024, the author implemented a community archaeology activity designed as a first step toward sustained engagement with the village that partially overlaps the site. The program—a hands-on lesson in archaeological stratigraphy for K–5 students, followed by a guided site visit—was intentionally simple, affordable, and easy to carry out alongside ongoing fieldwork. The activity …

Measuring Achilles Tendon Stiffness And Kinetics In-Vivo, Chloe L. Pinkston

Honors Undergraduate Theses

This study aims to measure the gastrocnemii Achilles subtendon passive stiffness and energy storage during walking. Stiffness was first determined using a noninvasive method that combines ultrasound, motion capture, musculoskeletal modeling, and a force transducer. Eight healthy participants were tested using this method to obtain the passive force-displacement relationship of the Achilles tendon at two different knee angles to calculate stiffness of the gastrocnemii subtendon. A gait analysis session was then performed using ultrasound, motion capture, and an instrumented treadmill at self-selected slow, normal, and fast walking speeds, using stiffness to calculate the subtendon’s force and energy storage. Gastrocnemii Achilles …