Digital Commons Network^™

The Deep Bsde Method, Daniel Kovach

Masters Theses

"The curse of dimensionality is the non-linear growth in computing time as the dimension of a problem increases. Using the Deep Backwards Stochastic Differential Equation (Deep BSDE) method developed in [HJE18], I approximate the solution at an initial time to a one-dimensional diffusion equation. Although we only approximate a one-dimensional equation, this method extends well to higher dimensions because it overcomes the curse of dimensionality by evaluating the given partial differential equation along "random characteristics''. In addition to the implementation, I also present most of the mathematical theory needed to understand this method"-- Abstract, p. iii

Hysplit In Simulating The Atmospheric Dispersion Of Hazardous Aerosols: A Case Study In St. Louis, Missouri, Ahmet Tolga Odabasi

Masters Theses

"Atmospheric dispersion and transmission play an important role in the behavior and effects of air pollution. Human health can be adversely affected by air pollution in a variety of ways, both immediately and over time. The Hybrid Single Particle Lagrangian Integrated Trajectory Model (HYSPLIT) modeling program, a computer model and software package, tracks the transport trajectories and distributions of air pollution and various pollutants, including radioactive pollutants, in the atmosphere. It also facilitates research on pollution sources. This study simulated the transport of hazardous aerosols in St. Louis region for the years 2020, 2021, and 2022 using the HYSPLIT modeling …

Enabling Smart Healthcare Applications Through Visible Light Communication Networks, Jack Manhardt

Masters Theses

"Future smart healthcare operations are envisioned to require the support of high-performance wireless networks. Researchers are presented with a problem, however, as the hospital environment brings unique challenges to the application of traditional radio-frequency wireless communication networks due to health concerns and electromagnetic compatibility standards. To meet these challenges and support the advancement of high-quality healthcare, we propose the use of an alternative wireless technology in visible light communication (VLC). Contributing to the growing interest in VLC amongst researchers, we construct both a VLC network simulation testbed as well as real-world testbed to serve as a platform for the development …

Open-Ended Hollow Coaxial Cable Resonance Sensing Via Permittivity Fluctuations For Applications To Exhaled Breath Health Monitoring, Peter Henry Holtmann

Masters Theses

"We report a pre-diagnostics breath analyzer based on the open-ended hollow coaxial cable resonator (OE-HCCR) to achieve real-time differentiation of healthy and compromised lung function through electromagnetic analysis of exhaled breath matter. A two-phase amplification scheme of electromagnetic signatures metered via the S11 phase curve offers high sensitivity to permittivity fluctuations in exposed airflow. The mathematical model of the breath analyzer is explained, followed by experimental validation of numerical findings from previous work. The collection of breath transient signals is performed through monitoring the reflected power magnitude and phase of the scattering parameter (S11) at the resonance frequency. Material fluctuations …

Radiofrequency Interference Detection Using Lstmand Statistical Analysis Discriminator, Luke Smith

Masters Theses

"Wireless devices are becoming increasingly pervasive across all aspects of society. Examples of such devices include radios, routers, mobile phones, tablets, and more. As the number of radio frequency (RF) devices continues to rise, so does the amount of interference and noise increase. This is why an efficient approach to interference detection is explored. Most research within this area has been done strictly within the frequency domain as viewing a signal within this domain provides many insights into what makes the signal. This has, however, led to the time domain being underutilized for this area of research.

To explore the …

Discrete Event Simulation (Des) In Swapping/Charging Of Battery Electric Vehicles In Underground Mining, Albert Einstein Amponsem

Masters Theses

"With climate change concerns escalating, international agreements such as the Kyoto Protocol, the US Presidential Policy, and the Paris Agreement aim to reduce greenhouse gas (GHG) emissions, targeting significant reductions by 2050. The mining sector, a notable contributor to GHG emissions primarily through diesel-powered material haulage, emits approximately 68 million tons of CO₂ annually. Transitioning to Battery Electric Trucks (BETs) presents a viable mitigation strategy by replacing diesel trucks with electric alternatives, thus eliminating CO₂ emissions.

However, the effectiveness of BETs hinges on optimized battery swapping and charging procedures. This study employs Discrete Event Simulation (DES), a computational …

Comparative Study Of Crypto Volatility And Price Forecasting Using A Mixture Of Time Series And Machine Learning Models, Abhishek Kafle

Masters Theses

"Forecasting financial product volatility and price is crucial for informed decision-making in investment and risk management. The models considered include GARCH, LSTM, GRU, BiLSTM, and hybrid models that incorporate various combinations of these models. We present a comparative analysis of forecasting volatility and price using the aforementioned models.

We also introduce a user-friendly dashboard for model training and evaluation, enabling users to upload datasets and customize model parameters. The dashboard allows users to select the type of model, specify the dataset range for training, determine the number of epochs, adjust the number of layers for deep …

Learn From The Past: Using Peer Data To Improve Course Recommendations In Personalized Education, Colton Walker

Masters Theses

"This work describes a recommendation approach designed to enhance student success by identifying semester schedules and graduation paths. The primary objective is to provide personalized graduation path recommendations rooted in individual student performance and draw insights from the academic journeys of similar students who successfully graduated. The original research contribution of this work lies in the development of a graduation path recommender system that leverages a combination of Markov Decision Process, Q-Learning, and collaborative filtering techniques to pinpoint graduation paths with a higher likelihood of leading students to success based on their academic progress thus far. The effectiveness of the …

Evaluating Electromagnetic Interference On Gnss Receivers, Giorgi Tsintsadze

Masters Theses

"Due to high power and efficiency requirements of modern electrical drive system, inverters are utilizing fast-edge pulses as a drive signal. The high frequency pulses contain higher order harmonics can radiate electromagnetic interference above accepted levels. Modelling and understanding the mechanism that causes the radiation is studied, modelled and presented as gray-box model which contains circuit level modelling of coupling between electrical machine phase windings and low power sensor harness. The thesis consists of two main papers. In the first paper, radiated emissions from an electrical drive system is charac- terized thru gray-box modelling where coupling between electrical machine phase …

Iterative Power Flow Control Architecture For Dc-Ac-Ac Triple Active Bridge Converters: Design, Simulation, And Hardware Testing, Jonathan Henri Saelens

Masters Theses

Driven by widespread electrification and escalating energy demands, efficient and cost-effective converter systems are necessary to maintain and improve our nation's electrical grid. Facilitating this necessity are power electronic converters in applications such as smart grids, renewable energy integration, and electric vehicles. Guided by the demand for improved converter topologies and conversion efficiency, much research has been conducted on varying designs, development, and control implementations. One such topology gaining significant research attention is the triple active bridge (TAB) converter. The TAB is a three-port power converter enabling both bidirectional power flow on each port and galvanic isolation for safety and …

"Ear Training For Worship Musicians:" An Applied Curriculum Project, Lauren Elizabeth Dillon

Masters Theses

The purpose of this applied research curriculum project is to assess the effectiveness of the curriculum “Ear Training for Worship Musicians” for non-traditionally trained college students using contemporary musical examples, introducing basic piano skills, and applying the Nashville number system. Current curriculum trends in aural skills training have not addressed the issue of teaching harmonic dictation for worship music to college students who are not traditionally trained. This study applies a quasi-experimental research design with identical pre- and post- implementation quantitative tests and a qualitative online survey once the curriculum is complete. Twenty participants were recruited for the online curriculum …

Strategic Morphology Interventions For Vocabulary Knowledge In Reading Comprehension, Danielle Marie Sharpe

Masters Theses

Many adolescent students have been shown to fall behind gradually as they reach

secondary grade levels. This has been researched as the effect of socioeconomic factors,

lack of immersive vocabulary backgrounds, and gaps in elementary years. Extensive

research has shown the benefits of morphology instruction in secondary students in

bridging vocabulary gaps, yet many schools have yet to provide them with the support to

comprehend difficult texts across content areas. This project explores the possible benefits

of offering adolescents the extra support and resources that can leverage reading

comprehension across content areas within secondary education. Through the use of

implementing …

Development Of S.T.E.A.M. Daises In Formal And Informal Environments For Educating Primary I Learners, Frances Neville

Masters Theses

The federal government has made education a competition among ourselves. Learning is not a rivalry to be imposed on our physical and cognitive development as humans. Escalating beliefs recognize education is more encompassing than CCSS, assessments and the grade level time frames in which standards are to be taught. On the precipice of anti-intellect, low expectations, and what has been termed “The Dumbing of America” an investigation into what it would take to close the achievement gap and increase student learning is overdue.

The goal for my Michigan based project, S.T.E.A.M. Daises, was to develop a program focusing on the …

Behavioral Economic Factors In Collective Bargaining, Cristal Cardoso Sao Mateus Cardoso Sao Mateus

Masters Theses

The present study evaluated the effects of delay, stake, and hypothetical group size on labor valuation in the context of increasing and decreasing labor demand. Challenges in collective bargaining are associated with work stoppages, which can cause economic losses, lack of service, and worker stress. Participants were asked to value their labor given a set of conditions in two experiments. Participants in experiment 1 (n = 49) valued their labor in both increasing and decreasing demand context. Conversely, participants in experiment 2 (n = 139) valued their labor in only one of the contexts. Delay to changes, stake size, and …

Rapid Reaction Studies On The Chemistry Of Flavin Oxidation In Urocanate Reductase, Niusha Delavari

Masters Theses

Urocanate reductase (UrdA) is a bacterial flavin-dependent enzyme that reduces urocanate to imidazole propionate, enabling bacteria to use urocanate as an alternative respiratory electron acceptor. Elevated serum levels of imidazole propionate are associated with the development of type 2 diabetes and, since UrdA is only present in humans in gut bacteria, this enzyme has emerged as a significant factor linking the health of the gut microbiome and the metabolic disorder insulin resistance. Here we investigated the chemistry of flavin oxidation by urocanate in the isolated FAD domain of UrdA (UrdA’) using anaerobic stopped-flow experiments at 4 °C. This analysis unveiled …

A Bigger Picture, Benjamin Richard Addison

Masters Theses

The subject of my final creative project is a short story about my dream of becoming an artist and realizing that good deeds are the brush strokes of God’s masterpiece. My earliest memories as a child are about the simple joy of drawing and coloring people, places and things from my imagination. I always enjoyed making gifts of my artwork. Serving others is an early calling. Creative thinking and problem solving are special gifts that helped me to survive domestic violence and sexual abuse as a child and to overcome the many challenges I would face during a twenty-six year …

World War Two Glider Borne Forces: The Role Of British Doctrine In Effective Military Change, John W. Stegall

Masters Theses

The United States’ National Defense Strategy has shifted from fighting an asymmetrical, fourth generation adversary utilizing counterinsurgency and unconventional warfare to preparing for a peer/near peer conventional conflict focused on the Pacific and Central Europe. Modern maneuver commanders and operational planners can apply the economy of force, criticality of speed plus precision in kinetic engagements, value of highly trained, task organized small units, and technological incorporation knowledge gathered from analyzing the World War II glider operations executed by Germany, Great Britain, and the United States. Gliders were sailplanes that had a higher ratio of lift to drag than a motorized …

Mindfulness To Reduce Math Anxiety And Improve Math Performance, Hannah E. Murch

Masters Theses

Math anxiety, the negative emotional response to math, is a common educational issue observed globally and across many grade levels. Additionally, it negatively impacts math performance and constrains long-term math achievement. Anxious ruminations strain mental resources and encourage avoidance behaviors such as procrastination. The prevalence and detrimental influence of math anxiety necessitate that educators mitigate math anxiety’s negative impact in the classroom. Previous research suggests interventions emphasizing mindfulness, which is the intentional awareness of the present moment, can combat the ruminations of math anxiety. When complemented with interventions on growth mindset, which is the belief that intelligence can grow and …

Intrusion Detection: Machine Learning Techniques For Software Defined Networks, Jacob S. Rodriguez

Masters Theses

In recent years, software defined networking (SDN) has gained popularity as a novel approach towards network management and architecture. Compared to traditional network architectures, this software-based approach offers greater flexibility, programmability, and automation. However, despite the advantages of this system, there still remains the possibility that it could be compromised. As we continue to explore new approaches to network management, we must also develop new ways of protecting those systems from threats. Throughout this paper, I will describe and test a network intrusion detection system (NIDS), and how it can be implemented within a software defined network. This system will …

A Feasibility Study Of A Wearable Health Monitoring Device Powered By Thermoelectric Generators, Sarah Schneider

Masters Theses

Implementation of thermoelectric generators (TEGs) as a power source for embedded systems has increased with the push toward alternative and renewable energy sources. Thermoelectric generators produce electrical energy from thermal energy through the Seebeck effect. The Seebeck effect is a phenomenon seen when a temperature difference at a joint of two different metals generates a DC current and electromotive force [1]. This has made TEGs desirable for embedded system applications because it would allow for extended wireless operation. TEGs are based on solid-state technology which means they do not consist of any moving parts which reduces wear and tear with …

Sel4 On Risc-V - Developing High Assurance Platforms With Modular Open-Source Architectures, Michael A. Doran Jr

Masters Theses

Virtualization is now becoming an industry standard for modern embedded systems. Modern embedded systems can now support multiple applications on a single hardware platform while meeting power and cost requirements. Virtualization on an embedded system is achieved through the design of the hardware-software interface. Instruction set architecture, ISA, defines the hardware-software interface for an embedded system. At the hardware level the ISA, provides extensions to support virtualization.

In addition to an ISA that supports hypervisor extensions it is equally important to provide a hypervisor completely capable of exploiting the benefits of virtualization for securing modern embedded systems. Currently there does …

Per- And Polyfluoroalkyl Substances (Pfas) In Treated Sewage Sludge From Michigan Wastewater Treatment Plants, Garrett Wesley Link

Masters Theses

Concentrations, compositions, and variability of Per- and Polyfluoroalkyl Substances (PFAS) in sewage sludge are characterized using an extensive dataset of 350 samples from 190 wastewater treatment plants (WWTPs) across Michigan. All samples are comprised of final treated sewage sludge generated at the end of the wastewater treatment process. Concentrations of Σ₂₄ PFAS are log normally distributed with a range of 1 to 3200 ng/g dry wt. and of average 108 ± 277 ng/g dry wt. Compounds with carboxyl and sulfonic functional groups comprised 29% and 71% of Σ₂₄ PFAS concentrations, respectively, on average. Primary sample variability is associated …

The Borgia Reexamined: A New Look At The Borgia Family And The Influence Of Adoptions Within The Family, Nicholas Ryan Mason

Masters Theses

The Borgia’s were a powerful family that garnered a great deal of their influence through the Catholic Church during the late fifteenth and early sixteenth centuries. The height of the Borgia was between 1492 and 1503, when Rodrigo Borgia was elected Pope Alexander VI. Throughout history they have been known for the rumors of murder, incest, greed, and corruption that have surrounded the family ever since they first came to power. An examination of the family may not only lead to a different perspective of the family but may also lead to a deeper understanding of how one's enemies may …

Auditory Development In Beginner Elementary Strings Classes, Lydia Y. Cooley

Masters Theses

Integrating auditory and visual learning is vital in instrumental music instruction. There is an order of precedence that guides the teaching sequence to raise students who can hear and read the music they play. In order to teach students to think musically while reading notation important auditory preparation needs to take place. It should not occur via passive listening but via active music-making. This practice-based method creates experiential knowledge of music which can then lead to a conceptual understanding of musical symbols. Such practical engagement produces positive long-term effects on the depth of skill and the emotional state of the …

Analysis Of Sonata-Form Concerto Movements By Tchaikovsky And Rachmaninoff: Transitions, Cadenzas, And Recapitulations, Joshua John Mckinnis

Masters Theses

This paper compares the piano concertos of Rachmaninoff with Tchaikovsky, noting similarities and differences in the use of long-term structure, inclusion and function of cadenzas, and use of extended harmonies. As one of the last great Romantic composers, Rachmaninoff is often overlooked for his contributions to the Romantic framework, especially considering the massive influence of Tchaikovsky. Following the Soviet Revolution, Rachmaninoff fled to America, where he would be exposed directly to jazz and modern song forms. This paper compares the piano concertos of Rachmaninoff and Tchaikovsky, noting Rachmaninoff’s tendency to imitate his colleagues and effects on his harmonic and melodic …

Input / Output, Zach Scheinfeld

Masters Theses

Input/Output emphasizes the processes and systems that create engagement, narrative, and meaning in graphic design, as opposed to singular inputs and outputs. In a series of experimental frameworks, ranging in form from 3D printed objects to browser-based painting tools, variables are put into the hands of the audience and user, creating conditions that are prime for retooling, repurposing, world-building, and play. Throughout, an open dialogue and feedback loop is formed between interface and user, author and reader, and teacher and student, where power, agency, and structure are in constant circulation, resulting in the emergence of unexpected forms, speculative technologies, and …

New Mapping, Dowon Yoo

Masters Theses

Tools determine the shape of most of the worlds that are manufactured or measured. Taking the Earth as an example, territory is shaped and transformed by the tools of the earth's plate movement, the sea, and humans. A map, a recognized territory, is represented through numerical instruments, mathematical formulas, and visual devices such as lenses.

The instrumental perspective is one of the powerful lenses that will work effectively into the past, present, and future. So I started to apply an instrumental perspective to digital space. Digital space which is Non-physical has become one of the most important worlds for contemporary …

Design: A Path To Agency, Design Thinking: An Educational Imperative, Seva Simone

Masters Theses

Design(ing) and Design Thinking are valuable frameworks that should be used to drive agency: This thesis explores what design and design thinking are and builds a case for incorporating design into art education.

Design isn’t a mainstream subject of study in public school curricula. Design offers a unique body of knowledge that is highly relevant to the inner-workings of our world: knowledge imperative to teach if we want to succeed in solving wicked problems like global warming and mitigating global injustices. Studying design allows students to connect academic learning to the world outside the ivy, bridging the gap between the …

Explorations And Reflections: Gendered Experiences In Teaching And Learning, Francesca Matarese

Masters Theses

This thesis explores the history of women's access to education and the issues of gender disparity in education. I focus on single-gendered schools as I write from personal experience to describe the benefits for individuals in single-gender educational systems. I cite conflicting research on how men and women learn regarding biological, cognitive, and developmental differences. I illuminate some of the benefits of single-gendered education through research, experience, and personal communications. I write about the controversies and disparities regarding education and single-gender schools. I document research on the issues women face in education and the politics of women’s bodies and minds …

Elusive Geometry, Lauren Richards

Masters Theses

All I have is a collection of parts. Fragments and pieces, segmented and turned over in my mind and in my hands as I try to understand them, stack them together and try to find a system. It seemed so simple at first - I just want to know how it works, of course I can put it back together again. Sometimes it’s a constant dissection, and the tide of incoming information is impossible to keep track of. But it’s alright to sit down and think about where they go and what they’re made of. What structures do I know? …