Engineering Commons^™

Active Brazing Of Single Crystal Al2o3 To Kovar Alloy With Agcuzr Filler Metal, Anthony M. Mcmaster

Mechanical Engineering ETDs

Brazing provides high strength and hermetic joining between metal, ceramic, and composite materials. Origins of the brazing process trace back to 3000BC, yet the technique continues to maintain relevance and demand across aerospace, medical, electronic, optical, and mechanical engineering. Here, single crystal Al2O3 (sapphire) was joined to Kovar in a single step via an AgCuZr active braze filler metal. The microstructure of the completed joint was investigating using microscopy and spectroscopy techniques. A unique braze chamber, paired with an optically clear top substrate (sapphire), allowed further investigation into the dynamics of the active braze process via in situ video monitoring. …

Valorization Of Ductile Cast Iron Solid Waste As A High-Performance Adsorbent For Crystal Violet Removal: Characterization, Optimization, And Mechanistic Insights, Ibrahim Ibrahim Mr., Abdel Mohsen Turky Dr., Nasser Mostafa Prof., Mai H. Roushdy

Chemical Engineering

Industrial textile wastewater containing synthetic dyes cause serious environmental and health risk, whereas ductile cast iron (DCI) foundries generate over 500 000 tons of waste annually. This study utilizes DCI solid waste as an adsorbent to remove the crystal violet (CV) dye from wastewater. Techniques (XRF, XRD, BET, SEM-EDX, FTIR, TGA-DTG, zeta potential) proved that the waste contains 88.0 wt% periclase (MgO) with nanoscale, high surface area, and abundant surface hydroxyl groups. Response surface methodology showed that the most significant parameters were the adsorbent dose and time contact. The optimal conditions give 93.7% removal efficiency at initial concentration: 38.7 mg …

Improving Human Visual Search: Enhancing Lung Cancer Nodule Detection In Medical Images, Christopher Khajira

Masters Theses

Human visual search involves the identification of relevant signals within information-rich environments, which is a fundamental problem in visual perception. While detection accuracy and response time are commonly used to evaluate performance in visual search, these measures do not reveal the underlying cognitive and computational structure that produces observable behavior. A key challenge lies in distinguishing between competing processing architectures, particularly in complex visual domains where different models can produce similar behavioral outcomes. This study addresses this challenge by developing a computational experimental framework for analyzing visual search behavior using System Factorial Technology (SFT). The experimental framework integrates naturalistic medical …

Meeting The Moment With Ai-Employer Informed Education, Brent Terwilliger, John Faraca

Publications

As artificial intelligence transforms aviation, aerospace, and autonomy-related sectors, higher education must adapt to meet evolving workforce demands. This session shares emerging findings from a nationwide study led by Embry-Riddle Aeronautical University, focused on employer perceptions of AI adoption, responsible use, and workforce preparedness in domains including uncrewed systems, space systems, robotics, and advanced air mobility. Based on a structured survey and follow-up interviews, the presentation explores how organizations are using AI tools, from generative platforms to enterprise systems, and defining effective and inappropriate use in operational contexts. Participants will gain insight into critical concerns (e.g., data privacy, compliance, security, …

Land-Use Intensity Of U.S. Wastewater Treatment Facilities By Secondary Process, Robert B. Sowby, Chandler W. Johnson

ScholarsArchive Data

1. Excel workbook of sample data

2. Shapefile of sample site

3. Shapefile of site areas

Karstic Cavities Underground Investigation: Gpr And Geotechnical Data Correlation, Mehrez Jamei, Mabrouk Abdelkader, Anwar Ahmed, Yahya Alassaf

Journal of Sustainable Mining

This paper focuses on the methodology involving ground penetration radar (GPR) for detecting and localizing random cavities in underground limestone soil, in conjunction with geotechnical data. A GPR survey was conducted alongside field and laboratory geotechnical tests at a field where mining activities are now promoted (Saudi Arabia Northern Borders Province). The paper presents correlations between the instantaneous amplitude of the reflected electromagnetic (EM) waves and rock quantification distributed (RQD), recovery rock parameter (REC), and uniaxial compressive strength (UCS). The GPR investigation proved to be an efficient nondestructive geophysical method for determining: 1) the …

Simulated Intelligence, Surveillance, And Play, Atienah Cape

Theses - ALL

This MFA thesis explores modern panopticism and the feeling of being watched by creating and installing Four Real Friends, an interactive robotic artwork inspired by the 1998 Furby. The project looks at how surveillance technologies are not just outside forces, but part of daily life, often feeling familiar, playful, and even social. The installation uses hardware design, custom circuits, computer vision, and real-time data display to collect and process how visitors interact in the gallery. Its nostalgic and friendly look encourages people to take part, while still showing how data is collected and displayed as it happens. This makes surveillance …

Scalable Advanced Control Of Building Hvac Systems Using Physics-Informed Machine Learning, Xuezheng Wang

Dissertations - ALL

Buildings account for approximately 40% of total energy consumption in the United States, with HVAC systems representing the single largest energy end-use. Advanced control strategies such as model predictive control (MPC), reinforcement learning (RL), and differentiable predictive control (DPC) have demonstrated significant energy savings in individual studies, yet their widespread adoption remains limited by the lack of scalable, control-oriented dynamic models, the absence of consensus on control strategy selection, and the gap between single-zone research and multi-zone real-building deployment. This dissertation addresses these barriers through an integrated research program spanning physics-informed machine learning (PIML) model development, advanced control evaluation, and …

Symmetries Of Legged Locomotion: Theory And Applications In Animals And Robots, Jiayu Ding

Dissertations - ALL

Legged locomotion in animals and robots is naturally modeled as a hybrid dynamical system: smooth body evolution is repeatedly interrupted by discrete contact events such as touchdown and liftoff. Although symmetry is a powerful organizing principle in smooth dynamical systems, a comparably systematic symmetry framework for hybrid legged locomotion remains underdeveloped. This dissertation develops such a framework for a scoped class of periodic hybrid locomotion models and uses it to relate theoretical gait analysis, animal locomotion studies, and robotic gait generation. The dissertation first extends symmetry notions from autonomous dynamics to hybrid legged systems and distinguishes symmetries of the hybrid …

Incorporating Sustainable Strategies And Practices Into The City Improvements Plan Of Madisonville, Kentucky To Better Suit It For The Changing World, Cade R. Howell

Honors College Theses

This project aims to make the case for city improvements in Madisonville, Kentucky by using successful strategies implemented by other cities across the region. These strategies include sidewalk improvements, the installation of roundabouts and parking garages, increased walkability and beautification, and a restructuring of the types of cars predominantly used in the area. The strategies would be implemented from least expensive to most expensive, and in a way that gets the communities involved as much as possible. By using these strategies, Madisonville can better prepare itself for a more sustainable future.

Effects Of Prescribed Burning On Forest Soil Low-Molecular-Weight Organic Acids, Ariana Rivera-Anazco

Honors Theses

Low-molecular-weight organic acids (LMWOAs) play important roles in nutrient mobilization, microbial activity, and carbon cycling in forest soils, yet their response to prescribed fire and thinning remains poorly understood. This thesis examined whether thinning and prescribed burning altered extractable LMWOA in O-horizon soils from the Lubrecht Experimental Forest. The study focused on lactic, propionic, glycolic, acetic, and formic acids measured in soils collected immediately before and approximately two weeks after the 2024 prescribed burn across four treatment categories: control, burn, thin, and thin+burn. The managed plots belong to a long-term experiment first treated in 2001-2002, whereas the control remained unmanaged …

Radio Frequency Resonate And Fire (Rf-Raf) Neurons Supporting Device Classification, David L. Weathers, Michael A. Temple, Brett J. Borghetti

Faculty Publications

Radio Frequency Fingerprinting (RFF) enables passive physical-layer device authentication by exploiting unintentional hardware variations in wireless transmitters. Neuromorphic implementations are attractive, given their potential for low-latency, energy-efficient inference capability under Size, Weight, and Power (SWaP) constraints at the edge. A new RFF capability is demonstrated here using recently introduced Radio Frequency Resonate-and-Fire (RF-RAF) neurons and eight WirelessHART devices. Performance is evaluated for RF-RAF-generated fingerprints against the established Gabor Transform (GTX) baseline using three classifier architectures: Random Forest (RndF), Convolutional Neural Network (CNN), and a Time-Incremented Spiking Neural Network (TI-SNN). The results show that RF-RAF fingerprints achieve an average classification accuracy …

Optimizing Copper Slag As A Sustainable Precursor For Iron Phosphate Cement: Hydration Mechanism, Phase Transformation, And Environmental Safety, Wei Wang, Hongyan Ma, Xiunan Cai, Dan Luo, Zhicheng Xu, Zhongqiu Luo, Xintao Zhou

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Iron-rich copper slag (CS) has significant potential as a precursor for the synthesis of sustainable acid-base cement (AB). However, the roles and transformation behaviors of the diverse iron phases in CS during hydration remain unclear. In this study, the preparation conditions, early hydration behavior, transformation processes of iron components, and environmental safety of CS-based iron phosphate cement (CS-IPC) were systematically investigated. Under optimized conditions, with a CS/ADP mass ratio of 3.0 and a grinding time of 1.5 h, CS-IPC exhibited an initial setting time of 27.6 min and a flowability of approximately 159 mm. After curing for 3 and 28 …

Design And Production Of A Carbon Fiber Longboard, Julia H. Stradinger

Honors Theses

This thesis contains an overview of the design, prototyping, and manufacturing of a carbon fiber long board. The purpose of this capstone was to create a viable product for the real-world market and then determine how to manufacture it at scale with sustainable financial practices. In order to accomplish this task, engineering, accounting, and manufacturing challenges had to be overcome throughout all stages. The production process involved the carbon fiber layup, baking, water jet cutting, and assembly of the carbon fiber longboard. In order to optimize this process, continuous improvement and lean manufacturing problem solving techniques were applied. After a …

Center For Manufacturing Excellence Capstone Project: Critter Catchers, Wilson R. Eatherly, Sophie C. Smith, Joyce W. Nkanor

Honors Theses

The Haley Barbour Center for Manufacturing Excellence annually presents seniors with the opportunity to do a capstone project that encapsulates their skills learned throughout undergraduate coursework. The interdisciplinary teams are made up of engineering, accounting, and business students. These students bring their skill sets together to come up with a business plan for the project they have been placed on. This team, Critter Catchers, chose to manufacture non-lethal animal traps meant to be a safe alternative to traps on the market that may injure animals. The trap was made primarily out of wood and operated by means of a pressure-triggered …

Manufacturing Process Of A Wooden Tortilla Press: Idea To Production, Olivia R. Marque

Honors Theses

The purpose of this thesis is to document the design, development, and manufacturing of a wooden tortilla press completed as a capstone project through the Center for Manufacturing Excellence (CME). Following the technical details of this thesis is a personal reflection by one team member, Olivia Marque. The project follows a structured product development process that begins with problem definition and concept development, progresses through design, prototyping, and jig fabrication, and culminates in a full production run on the CME shop floor. A multidisciplinary team, including engineers, a marketer, and an accountant, collaborates throughout the project to support both technical …

Designing A Wearable Gait Feedback System For Parkinson’S Disease Patients, Heath M. Stevens, Capri H. Lobotzke, Spencer J. George

Honors Theses

Parkinson’s disease is a progressive neurological disorder that commonly causes a shortened stride length, reducing mobility and increasing fall risk. While current treatments, such as oral medication, can reduce symptoms, they do not provide real-time feedback to correct gait and often result in “off” periods when symptoms return. Physical therapists report that simple reminders to lengthen stride can help patients recover from “off” periods and maintain normal walking patterns, but there is no current at-home way to simulate this effective therapy. Recognizing this gap in at-home support, our biomedical engineering senior design team at the University of Mississippi sought to …

Manufacturing Of A Wooden Tortilla Press: Idea To Production, Glenn H. Walker

Honors Theses

The purpose of this thesis is to document the design, development, and manufacturing of a wooden tortilla press completed as a capstone project through the Center for Manufacturing Excellence (CME). The project follows a structured product development process that began with problem definition and concept development, progressed through design, prototyping, and jig fabrication, and culminated in a full production run on the CME shop floor. A multidisciplinary team, including engineers, a marketer, and an accountant, collaborated throughout the project to support both technical development and manufacturing execution. Project planning and scheduling were established early and maintained throughout the project to …

Design And Production Of A Carbon Fiber Longboard, Vince Fichtel

Honors Theses

This thesis contains an overview of the design, prototyping, and manufacturing of a carbon fiber long board. The purpose of this capstone was to create a viable product for the real-world market and then determine how to manufacture it at scale with sustainable financial practices. In order to accomplish this task, engineering, accounting, and manufacturing challenges had to be overcome throughout all stages. The production process involved the carbon fiber layup, baking, water jet cutting, and assembly of the carbon fiber longboard. In order to optimize this process, continuous improvement and lean manufacturing problem solving techniques were applied. After a …

Design And Development Of A Manufacturing Process For A Raised Planter Box, Weslyn Mcmurrin, Larson Looney, Haneef Adebisi, Rachel Hipskind, Carolyn Hale

Honors Theses

This report presents the design and manufacturing process of a raised garden bed box with an integrated irrigation system. The goal of this project was to replicate a manufacturing environment in the creation of a durable, ergonomic, and cost-effective product. The project began in Spring 2025 with initial market and financial research to determine design requirements and materials for prototype development and continued through the end of the Fall 2025 semester with a small-scale production run and team presentation. Following our market and financial research, multiple design concepts were evaluated and refined through the use of computer-aided design and prototype …

Manufacturing Process Of A Wooden Tortilla Press: Idea To Production, Colleen Nolan, Ben Bird, Olivia Marque, Emma Palmer, Hayden Walker

Honors Theses

The purpose of this thesis is to document the design, development, and manufacturing of a wooden tortilla press completed as a capstone project through the Center for Manufacturing Excellence (CME). The project follows a structured product development process that began with problem definition and concept development, progressed through design, prototyping, and jig fabrication, and culminated in a full production run on the CME shop floor. A multidisciplinary team, including engineers, a marketer, and an accountant, collaborated throughout the project to support both technical development and manufacturing execution. Project planning and scheduling were established early and maintained throughout the project to …

The Design And Manufacturing Process Of The Concealed Shelf, Joshua Harvel

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

Beyond Accuracy: Machine Learning Models For Predicting Presence Of Permanent Molar Caries In U.S. Children And Adolescents With Fairness Consideration, Pritam Deb, Lin Li, Christina R. Scherrer

Faculty Articles

Background

Although predictors of dental caries have been previously explored, a comprehensive understanding of factors influencing permanent‐molar decay in U.S. children and adolescents, especially with respect to racial and ethnic biases remains limited. This study aims to develop and evaluate machine‐learning (ML) models incorporating algorithmic fairness to predict caries in permanent molars.

Methods

Data from the National Health and Nutrition Examination Survey (NHANES) were analyzed, using the 2011–2014 cycles for training and validation and the 2015–2016 cycle for testing. The primary outcome was decayed, missing, and filled teeth (DMFT) in at least one permanent molar, dichotomized to represent the presence …

Designing A Collaborative Uav-Ugv System For Autonomous Challenge Completion, Ember Reysen

Honors Theses

The coordination between Unmanned Aerial Vehicles (UAVs) and Unmanned Ground Vehicles (UGVs) holds significant potential for completing complex tasks such as disaster response and construction surveillance by leveraging the strengths of aerial flight and stable on-ground transportation. Unfortunately, coordination between UAVs and UGVs is extremely complex and task-dependent, leading to limited understanding of autonomous collaboration. This thesis explores the process of designing an UAV-UGV collaborative system capable of aerially scouting a target destination, relaying its coordinates to a ground vehicle, and performing a precision landing for unison travel. I utilize computer vision techniques via OpenCV for target marker identification, ROS …

The Design And Manufacturing Process Of The Concealed Shelf, Mary-Del R. Jansen

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

Development Of A Putting Green Manufacturing Process, Tabitha R. Webster

Honors Theses

Our Capstone project investigates the end to end design, development, and production of a 6‑foot long portable putting green marketed for individuals seeking a high quality, competitively priced golf product for home or office use. The capstone project examines the full lifecycle of product creation applying manufacturing principles learned through the center of manufacturing’s coursework. From the initial concept through engineering design, market research, prototyping, manufacturing optimization, and final production the project emphasizes cross‑functional collaboration across engineering, business, and accountancy majors. Methods used to gather data included marketing surveys, CAD drawings, time studies during production runs, value stream mapping, and …

The Design And Manufacturing Process Of The Concealed Shelf, Clarence A. Matthews Iv

Honors Theses

The Haley Barbour Center for Manufacturing Excellence (CME) at the University of Mississippi challenges students to manufacture a product and put forth a balanced manufacturing line in a senior capstone project. The chosen product was a concealed shelf, or a shelf with a hidden compartment. The team aimed to design a product, formulate a project plan, analyze the market, conduct financial analysis, develop a prototype, establish a manufacturing process, and demonstrate that process in two production runs. The team used tools such as Computer Aided Design (CAD), market surveys, jig creation, and line balancing to accomplish these tasks. After two …

Waste Wood Biochar As A Potential Agricultural Soil Amendment, Gavin Rahl

Honors Theses

Biochar, as a technology, has and continues to be evaluated for a wide variety of purposes including drinking water treatment of heavy metals and air filtration for harmful contaminants. When evaluating the logging industry, a problem has emerged around residual wood waste (slash piles) in the field that biochar production may be able to address. Additionally, agriculture has begun to look for alternatives to nitrate heavy fertilizers that can cause eutrophication in waterways that biochar has the potential to address. In this study, the effect of biochar addition was assessed in agricultural fields with tight margin alfalfa/grass hay crops to …

Geochemistry And Occurrence Of Rare Earth Elements In Mine-Impacted And Natural Waters Of Montana, Matthew Vitale

Honors Theses

The occurrence and geochemical behavior of rare earth elements (REEs) in mine-impacted and natural waters of Montana are evaluated across a range of environments, including hard rock mining-impacted systems, coal-associated waters, and naturally occurring acid rock drainage (NARD). Understanding the abundance of REEs in secondary sources such as mine-impacted waters is critical for both environmental assessment and resource recovery. A comprehensive dataset of dissolved and total recoverable REE concentrations was analyzed to assess the influence of pH, total dissolved solids, and geologic setting on REE mobility and distribution. Results demonstrate a strong inverse relationship between pH and REE concentrations, with …

Analysis Of Rare Earth Element Enrichment In The Phosphoria Formation, Southwest Montana, Nicholas Risedorf

Honors Theses

The Phosphoria Formation is a world-class phosphate-producing paleobasin in the Rocky Mountains. It has produced over 230 Mt of commercial phosphate since the 1920s. Rare earth element (REE) mineralization in phosphorite was observed historically, but commercial recovery of REEs has not been reported. Increasing demand for domestic REE supply has made resource characterization a priority. This study investigates the distribution of REEs within the Phosphoria Formation across southwest Montana. Five sections of Retort Member from the Phosphoria were exposed to measure stratigraphy and collect samples for geochemical analysis. Historic mine sites and prospects were also visited to collect and analyze …