Digital Commons Network^™

Automated Generation Of Malware Metadata Signatures, Joel Schott

Masters Theses

In advanced, targeted malware attacks, the custom software tools used to package and send malicious files and messages can lead to distinctive metadata values that facilitate creation of a malware metadata signature. Manual creation of these signatures requires expert domain knowledge and is time-consuming and error-prone. Our goal is to automate this process. We created several methods of automatically generating malware metadata signatures for ZIP files and emails. We evaluated these methods by comparing signatures generated with these methods to existing expert-created signatures. We found automated methods for ZIP files and emails that are capable of generating metadata signatures that …

Fetal Acidosis Prediction Using Attention Enhanced Convolutional Neural Networks, Anusha Adhikari

Masters Theses

This study explores the integration of spectral mixtures of fetal heart rate (FHR) and uterine contraction (UC) signals to enhance the prediction of fetal acidosis, utilizing the CTU-CHB dataset. Several classification models were trained using two distinct oversampling techniques and inputs, demonstrating that models incorporating spectral mixtures significantly outperform those using raw signals. These models, particularly when combined with convolutional neural networks (CNNs) and attention mechanisms, achieved a notable F1-score of 0.98, with the highest model achieving an area under the Receiver Operating Characteristic (ROC) curve of 0.95. The research employs a variety of techniques including short-time Fourier transform and …

Long Short-Term Memory (Lstm) -Based Neural Network Model For Optimizing Composite Manufacturing Process Using Autoclave, Sourav P. Bolar

Masters Theses

The combination of high pressure and controlled heat plays a critical role in ensuring the uniform curing of composite materials, leading to parts with superior mechanical properties. In this study, three composite samples of IM7/CYCOM 5320-1, each cut into 12x12-inch squares, were placed in an autoclave at three different locations, spaced 6 inches apart. Sixteen thermocouples were randomly distributed across the setup to monitor the curing process as the autoclave temperature was systematically ramped up and down while maintaining constant pressure, creating a fully controlled curing environment. The primary objective was to optimize the curing locations to reduce machine runtime …

Modeling Of Slot-Backed Microstrip Line For Emi Applications, Jongsuk Hyun

Masters Theses

Radiated emissions from printed circuit boards (PCBs) are a significant concern in electromagnetic interference (EMI) and radio frequency interference (RFI). Shielding cans are widely used to mitigate these emissions but evaluating requires accurate characterization of equivalent noise sources. Slot-backed microstrip antennas are employed for this purpose due to their near-zero height, low parasitic radiation, and PCB-compatible structure, offering a practical alternative to conventional loop antennas. This paper presents a physics-based analytical model that integrates both the discontinuity effects and radiated characteristics of slot-backed microstrip structures within a unified circuit framework. An analytical expression for the dipole moment is proposed based …

Influence Of Alloy Composition On The Process Robustness Of Steels Consolidated Via Laser-Directed Energy Deposition, Jonathan Kelley

Masters Theses

"To ensure consistent quality of additively manufactured parts, it is advantageous to identify alloys which can meet performance criteria while being robust to process variations. Toward this end, this work investigated the effect of alloy composition on the robustness of steels consolidated via laser-directed energy deposition (L-DED). Ultra-high-strength low-alloy steel (UHSLA) and pure iron powders were mixed in-situ to produce 10 compositions containing 10-100% UHSLA by mass. JMatPro material simulations roughly predicted phases and mechanical properties. Two sets of experiments were used to evaluate the sensitivity of as-built hardness (all 10 compositions) and tensile properties (5 select compositions) to process …

Investigation Of Arm Stiffness Modulation During Overground Physical Human-Human Interaction, Henry Tien

Masters Theses

The vision of advancing robots capable of direct physical engagement with humans begins with an understanding of how humans interact with each other. Even rudimentary interactive tasks, such as shaking hands, provides tremendous challenges for modern robotics and current research into the biomechanics of such interactions is limited. Thus, further analysis of physical Human-Human Interaction (pHHI) will bolster efforts to enhance collaborative robot capabilities. To this end, a custom Force Perturbation Handle (FPH) was developed, including the requisite mechanical, electrical, and software systems, to investigate the unique role of arm stiffness modulation in haptic communication between humans. The novel device …

Gfrp Reinforced Bridge Barriers: Experiment Testing, Manish Kumar Gadhe

Masters Theses

This study focused on evaluating the performance of concrete bridge barriers reinforced with Glass Fiber Reinforced Polymer (GFRP) compared to those reinforced with conventional mild steel. Four full-scale barriers were constructed, three using GFRP bars as the reinforcement and one with mild steel reinforcement. These were cast on two concrete slabs to ensure consistent support conditions. The use of GFRP aims to address durability concerns associated with steel reinforced concrete (RC), particularly corrosion of these bars in harsh environments.

To simulate real-world impact scenarios, a weighted cart was launched at each barrier using a guided sled system. Sensors, including load …

Development Of A Method To Measure Blast Overpressure Exposure Using Orthogonal Sensor Orientations, Nicholas Kuehl

Masters Theses

Measuring and recording blast exposure to military personnel from shoulder-fired weaponry or improvised explosive devices to correlate health outcomes like mild traumatic brain injury has been a goal for many years. As such, many wearable sensors have been developed and tested for accuracy and reliability. Despite this, knowing the sensor orientation in relation to the blast source is important to fully correlate the actual personnel exposure to clinical outcomes. This research investigates whether pressures recorded at three independent orientations in the x, y and z planes can be combined to a representative pressure that is independent of orientation. Important metrics …

Critical Behavior Ofthedilutedquasi-Onedimensionalquantum Ising Model, Logan Bradley Sowadski

Masters Theses

We explore the phase transition in the diluted quasi-one-dimensional quantum Ising model. We begin by giving an introduction to the Ising model followed by derivations of the properties and observables. A brief overview of Monte-Carlo simulations is also given focusing on two algorithms that make simulations for physically realizable systems possible, the Metropolis and Wolff algorithms. We finally discuss the concept of random disorder in the system and the effects this can have on the bulk of the system.

These concepts are then directly applied to a quasi-one-dimensional Ising model. Motivated by recent experiments on the spin-chain material cobalt niobate, …

Constraint Programming For Optimized Degree Paths, Mitchell Lee Skaggs

Masters Theses

This work presents a degree planning tool developed as part of the Pervasive Cyberinfrastructure for Personalized eLearning and Instructional Support (PERCEPOLIS) project which generates complete, valid, and personalized degree paths at any point from admission to graduation. This eliminates tedious calculation and double-checking, allowing advisors to focus on a student’s long-term plans and students to proactively explore potential degree paths. The original research contribution of this work is the use of a unified model for academic requirements to automatically translate complex, real-world curricula into a constraint programming model that can be quickly optimized based on personalized student criteria.

Automatically translating …

Overpressure Waveform Comparison Of High Explosive, Methane, And Coal Dust Explosions, Frank James Schott

Masters Theses

Methane and coal dust explosions remain a leading cause of catastrophic mining accidents, making it critical to understand their overpressure characteristics for better hazard modeling, mitigation, and regulation. Although high explosives (HE), flammable gases, and dusts have been studied separately, direct waveform comparisons in identical environments are rare. This study addresses that gap by comparing overpressure waveforms from HE, methane-air mixtures, and coal dust explosions to assess differences in peak pressure, impulse, rise time, and phase duration. Twenty-seven tests were conducted using standardized instrumentation and sensor arrays. Results showed that HE generated the highest peak pressures with short positive phases …

Frequency-Tracker And Power Supply For Piezoelectric Lunar Dust Removal Actuator, Praneeth Uddarraju

Masters Theses

"This work presents a reconfigurable phase-locked loop (PLL)-based control system for the resonant excitation of piezoelectric actuators aimed at automated removal of particulate contaminants from photovoltaic (PV) surfaces—particularly in extraterrestrial environments such as the lunar surface. Regolith or lunar dust buildup on solar panels is a serious hazard to the effectiveness of energy harvesting on extended missions. By using high-frequency structural excitation and inertial forces the suggested system removes surface impurities. Tunable Sallen-Key low-pass filters for reliable feedback conditioning are used in conjunction with a digitally implemented PLL on an FPGA (XLR8 platform) to precisely lock the drive frequency to …

Selective Surface Activation And Flotation Of Pyrite For The Recovery Of Tellurium From Sulfide Tailings, Mulenga Mutema Chibesa

Masters Theses

Copper sulfide tailings from past and present mining operations are important secondary sources of critical elements such as tellurium (Te), a key component in cadmium–telluride photovoltaic solar cells. Characterization of tailing streams from copper porphyry (CP) ore flotation revealed that Te-bearing minerals are predominantly hosted in pyrite, which is usually depressed and discarded. Enhancing pyrite recovery is therefore a critical first step toward concentrating Te minerals for downstream extraction. However, pyrite flotation is often hindered by hydrophilic surface complexes formed during prior processing. This research investigated selective flotation of Te-bearing pyrite from CP tailings using micro flotation and bench-scale flotation, …

An Experimental Study Into The Methods Of Water Coupling And Their Impact On Kinetic Energy And Blast Over Pressure Through The Use Of A Ballistic Pendulum, Jeremiah Alan Cohn

Masters Theses

Water coupled charges utilize the material properties of water to alter their behavior for reductions in overpressure and increases in kinetic energy. Although water coupling has been studied directly, combined usage of the two primary methods of water coupling, tamping and pushing, hinders further research. This study addresses the gap in literature by comparing ballistic pendulum and blast data for charges with water tamping and pushing to determine differences in kinetic energy, peak overpressure, impulse, noise and duration of fireball. The results showed that water tamping provided a 69.1% increase in kinetic energy, an 18.6% reduction in incident overpressure, a …

Aerodynamic Design Workflow Optimization For Fsae: Advanced Cfd And Hpc Automation, Kyle Maynor

Masters Theses

This research identifies and resolves inefficiencies in the Computational Fluid Dynamics (CFD) workflow of the Missouri S&T Racing Formula SAE Team’s aerodynamic development. Key bottlenecks were found in simulation runtime, laborious simulation preparation, an overly manual simulation submission process, and unchecked mesh quality. A fully reimagined workflow was implemented with simulation parameters to adjust vehicle attitudes. From this, an automated design sweep could be executed to generate aero maps of the developing vehicle using the Design Manager Project. A Python-based submission app handles the terminal interfacing and macro editing that significantly slowed the job submission process before. Using a university …

Development Of Stalling Detection Algorithms And Operator Behavior Models For Evaluating Hydraulic Excavator Performance, Mateo Fernando Montenegro Defaz

Masters Theses

This study aims to develop a reliable algorithm for stalling detection and investigate how operator behaviors impact the truck-loading process, focusing on swing and bucket rotations. While the study of excavator digging conditions and equipment performance is well understood, describing stalling from telemetry data and the influence of operators’ behavior on overall system efficiency remain underexplored. This study seeks to: (i) develop a reliable algorithm for stall detection by analyzing key operational variables such as velocity and angles; (ii) implement statistical and machine learning techniques, specifically a Support Vector Machine (SVM) classification algorithm, to differentiate between ideal and non-ideal digging …

Enabling Drone-Integrated Active Microwave Thermography Via A Slot Antenna Design, Alec P. Fitzmaurice

Masters Theses

Civil infrastructure inspection quality and inspector safety may be enhanced from the advancement in the capabilities of nondestructive testing and evaluation of remote or otherwise hard-to-reach areas such as nuclear power plants, wind turbines, bridges, or other civil infrastructure using drone-based Active Microwave Thermography (AMT). AMT is a nondestructive testing technique that utilizes high frequency energy (often radiated from an antenna) to induce heating in a specimen. Following this thermal excitation, an infrared camera is used to measure the resulting surface thermal profile. From this, defect indications may be detected. To enable drone-based deployment of AMT, where the antenna size …

The Relationship Of Parent Iep Meeting Attendance On African American And Hispanic Middle School Students’ Attendance And Behavior, David W. Johnny

Theses and Dissertations

This applied dissertation investigated whether there was a significant difference in behavioral and attendance outcomes among African American and Hispanic middle school students with disabilities, depending on parental attendance at Individualized Education Program (IEP) meetings. The study was grounded in Hoover-Dempsey and Sandler’s parent involvement theory. This quantitative study used archival data from a southeastern U.S. middle school to examine whether variations in parental participation corresponded with students' disciplinary incidents and school absences.

The study included 96 students in grades 6–8 whose IEP attendance, behavior referrals, and absence data were analyzed. Independent samples t-tests were conducted to determine if statistically …

Foster Care Students And Their Success In Academic Achievements In School, Kirsten Nassiff

Theses and Dissertations

This applied dissertation was designed to provide better training and resources for teachers working with students in foster care who have experienced multiple foster care placements, and to assist them in achieving academic success.

The researcher conducted semi-structured interviews with six educators and staff at an alternative school that has the highest number of students in foster care, located in this school district. Using Braun and Clarke’s six steps for Thematic Analysis, each transcript was coded with the assistance of MAXQDA, and themes were developed.

An analysis of the data revealed that educators and staff do not receive adequate communication …

The Disengagement Of Black High School Students In English Language Arts Classrooms, Michelle Chanda Singh

Theses and Dissertations

This applied dissertation explored how high school English Language Arts (ELA) teachers understand and respond to the disengagement of Black students. Racial disparities in literacy achievement persist across the United States. Despite reform efforts, many Black students continue to experience academic and emotional disconnection in ELA classrooms. Few studies have centered on teachers’ perspectives to understand the classroom-level conditions contributing to this disengagement. This qualitative study addressed that gap by examining the beliefs, practices, and experiences of four veteran ELA teachers in the southeastern United States.

Using Interpretative Phenomenological Analysis, the study examined how teachers make sense of Black student …

Tech-Forward Learning: Text-To-Speech Impact On Catholic High School Students, Dennise A. Leyva

Theses and Dissertations

This phenomenological study was conducted to improve instructional support for diverse learners in a Southeast Florida Catholic high school by exploring teachers’ use of the Apple iPad accessibility feature, text-to-speech (TTS). Although this Catholic high school implemented a 1:1 iPad program, many teachers had limited experience using the built-in TTS feature to meet the diverse needs of students, including English Language Learners and those with reading difficulties. Teachers often used conventional approaches that failed to integrate assistive technology for inclusive and equitable learning.

The researcher conducted in-depth semi-structured interviews with six high school teachers to examine their experiences implementing the …

Perceptions Of Mental Health School-Based Team Members On Addressing Suicidal And Non-Suicidal Self-Injurious Behaviors: A Qualitative Inquiry Into Policy Implementation And Practice In School Settings, Ashlande Smith

Theses and Dissertations

The purpose of this study was to explore the perceptions of mental health school-based team members regarding the effectiveness of current prevention and intervention practices for addressing suicidal and non-suicidal self-harming behaviors among school-age children in a large suburban school district in the southern United States. Despite the alarming increase in self-injurious behaviors, with crisis calls rising from 144 incidents in the 2022 school year to 736 incidents in the 2025 school year, the district lacked comprehensive prevention and intervention strategies to effectively address this critical issue.

The researcher used a qualitative phenomenological approach to capture the lived experiences and …

Legislative Impacts On K-12 Social Studies Teacher Identity, Curricular Decision-Making, And Receptiveness To Professional Development, Staci Fisher

Theses and Dissertations

This applied dissertation examines how K-12 public school social studies teachers are navigating their instructional decision-making regarding content about marginalized groups in response to state legislation. Quantitative data were collected through an online Likert-scale survey to measure teachers’ reported agreement on how state legislation has impacted their instructional decision-making, job satisfaction connected to their professional and personal identities, inclusion of instructional materials, and receptiveness to professional development.

Following data collection, the researchers analyzed whether factors of district political context and teachers’ personal and professional identity characteristics predicted their responses. Survey results showed most teachers reported feeling that state legislation has …

Assessing Teachers’ Conceptual Leadership Perceptions Of School-Site Administrators As An Approach To Improve Teacher Morale, Darlene C. Landy

Theses and Dissertations

The purpose of this study was to have teachers complete a self-assessment survey to assess their conceptual belief of the leadership styles of school-site administrators that are conducive to high teacher morals. The questions addressed how teacher morale affected the teachers according to the number of years they had been teaching, their college majors, their highest college degree, their gender, and their ethnicity. The teachers who participated in this study were volunteers who had to be teaching for 2 years or more.

This was a quantitative study that used the Teacher Rapport With Principal dimension of the Purdue Teacher Opinionnaire …

Effects Of Parent Involvement In Their Children’S Academic And Behavioral Performance, Megan Menozzi

Theses and Dissertations

This applied dissertation was designed to investigate the best practices to increase parental involvement in their children’s school activities by recording and scribing the experiences of certified teachers. Prior to this study, the current school experienced a decrease in parental involvement with their child’s scheduled school activities. As the school carry on with planning scheduled events for parental involvement, teachers were still expected to be prepared to implement curriculum in the classrooms, while ensuring children’s needs were being met by way of continuous communication with families.

The researcher developed a qualitative phenomenological approach. The design allowed the researcher to interview …

Perceptions Of Maine Batterer Intervention Program Directors On Treatment Challenges, Jenna Ostrowski

Theses and Dissertations

Intimate partner violence (IPV), commonly known as domestic violence, is a widespread social issue that continues to impact many victims. To combat this problem, multiple funded resources target not only the victims’ needs, but also attempt to reduce recidivism rates for domestic violence offenders. Treatment programs for domestic violence offenders have been operational since the 1970s, with curricula directed toward changing power and control dynamics in intimate relationships. Growing research supports the idea that domestic violence offenders have more prevalent histories of childhood trauma and mental health issues, which may increase the risk of IPV perpetration. However, research also shows …

Formación Del Docente En Medios Tecnológicos Y Audiovisuales Para La Enseñanza De Inglés Como Segundo Idioma A Través De La Lectura, Waleska Rivera Santiago

Theses and Dissertations

Esta disertación aplicada fue diseñada para determinar la formación tecnológica del docente de inglés como segundo idioma del Departamento de Educación en tecnología. Además, la revisión de literatura presentada mostró una variedad de términos como el uso de las TIC en el aula, el uso de tecnología para la enseñanza y aprendizaje en la sala de clases. A su vez, la revisión de literatura presentó sobre el uso de la tecnología para la adquisición lingüística de inglés como segundo idioma. Por consiguiente, la investigación tuvo como fin cuantificar la formación docente de inglés como segundo idioma y sus competencias tecnológicas …

Factors Contributing To Teacher Attrition From The Perspectives Of Teachers Who Left The Profession, Malik Padgett

Theses and Dissertations

This applied dissertation examined teacher attrition, a persistent challenge in K–12 education. Nearly 20% of teachers leave by their third year, with up to 50% departing by the fifth year. High turnover disrupts learning, strains resources, and diminishes educational quality, particularly in under-resourced communities. Addressing these issues is crucial for improving retention and fostering stability.

The study explored key factors driving attrition, including inadequate compensation, excessive workload, insufficient professional development, and limited administrative support, especially in the post-COVID era. Grounded in transformational leadership theory, the research highlighted the role of leadership in fostering morale and ethics rather than merely transactional …

Investigating The Impact Of Student Motivation And Self-Efficacy On Academic Performance In Advanced Placement Courses, Alicia Carroll

Theses and Dissertations

This mixed methods applied dissertation was designed to provide insight into the effects of student motivation and student self-efficacy on academic performance in Advanced Placement (AP) courses. Secondary educational institutions in the United States offer their students Advanced Placement courses, dual enrollment or dual credit courses, International Baccalaureate (IB) courses, and early college programs to encourage and promote the quest for outstanding student attainment. Although many students in the study school enroll in the Academy for Advanced Placement Studies, not all ninth through 12th graders achieve Advanced Placement credit in the Academy’s required courses.

Education has traditionally been viewed as …

Exploring Teacher Self-Efficacy And Best Practices Of Teacher Preparation Programs To Teach The Science Of Reading, Tonya Robinson-Mcnair

Theses and Dissertations

This dissertation investigated the content of teacher preparation programs to assess whether they integrate the science of reading and effectively equip English Language Arts teachers to instruct children in reading. Researchers have long examined the decline in national reading scores, identifying contributing factors such as the structure and content of teacher training programs. While many reading educators undergo formal training, these programs often lack a foundation in scientific research to support effective instructional methods. A teacher's confidence in teaching reading is influenced by both their preparation program and in-service training. However, many educators lack essential pedagogical knowledge and an understanding …