Digital Commons Network^™

The Accuracy Of Occlusal Splint Fabricated By The Different Materials With Different 3d Printers., Supisara Thamrongsak

Master's Theses (2009 -)

Aim: The purpose of this study is to evaluate the accuracy of occlusal splints fabricated by the different materials with different 3D printers in four different orientations (0°, 15°, 25°, 40°) using surface matching software. Materials and Methods: Occlusal splints were printed in 4 different orientations including 0°, 15°, 25°, and 40° based on the STL file of the designed occlusal splint with 3 different printers (Carbon® M3Max, SprintRay Pro S, Asiga Pro4K). A total of 120 occlusal splints were printed for the present study, 10 occlusal splints were printed for each group. Then all occlusal splints were scanned using …

La Grange Alabama's Earliest College, Walter Brownloe Posey, Ph.D.

Documents

This article on LaGrange College was published in the Birmingham-Southern College Bulletin in November 1933. (Volume XXVI Number 6)

German Is For You! The Making Of A High School Multikulti German Course, Jennene Aten

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This teacher self-study examined the process of creating and teaching a multicultural German curriculum. This study necessarily involved observing students as they went through the semester of course work, but students are not the center of the research. I am. This research focuses on what I learned about teaching, specifically my teaching in my subject area and how I could improve my skills and methods.

Germany is an ethnically diverse nation but not usually thought of as such. The presentation of Germany in German language textbooks is generally portrayed as rather monochromatic. Students who study German, specifically in Fairfield, California, …

Improving Drought Science Communication And Accessibility, Lindsay Erin Johnson

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Effective drought management depends not only on the accuracy of scientific data, but also on how that information is communicated and understood by diverse audiences. This dissertation examines drought communication through the lens of science communication, with a focus on improving readability, accessibility, understandability, and usability of drought information. Using a manuscript-style format, three studies investigate how drought information is written, delivered, and applied. Chapter 1 provides a brief overview and outline of this dissertation. Chapter 2 evaluates the readability of the U.S. Drought Monitor (USDM) national narratives over almost 8 years. Results show that these narratives are consistently written …

Laser Microprocessing Of Metallic And Composite Materials: Nanosecond Pulsed Laser Surface Melting, Laser Shock Peening, And Femtosecond Laser Machining, Qiuchi Zhu

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation comprises three parts addressing laser microprocessing of metallic and composite materials through nanosecond pulsed laser surface melting, laser shock peening, and femtosecond laser machining. The first part discusses nanosecond pulsed laser surface melting for corrosion mitigation in stainless steel. Commercial 304 stainless steel (SS) was first used to establish a processing window for stable shallow remelting and rapid resolidification. The approach was then extended to 304L/308L SS welded joints relevant to nuclear dry storage canisters. The results show that nanosecond laser surface melting refines the near-surface microstructures in the heat-affected zone and improved pitting corrosion resistance. Electrochemical and …

A Multimodal Approach For Building Generalizable And Reliable Models Of Longitudinal Experiential Data, Ahatsham Hayat

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation studies how to build generalizable and reliable models for longitudinal experiential (LE) data. Such data arises in domains where human behavior, experience, and context evolve over time, including education, behavioral health, and related human-centered settings. These datasets are often heterogeneous, partially observed, temporally structured, and vulnerable to out-of-distribution (OOD) shift, making them difficult to model with conventional machine learning pipelines.

The dissertation develops a multimodal research program that progresses from traditional machine learning and deep learning methods to contextual large language modeling, vision-language modeling (VLM), and finally a frozen-backbone multimodal framework designed to improve robustness and generalization. Across …

Integrated Approaches For Valorization Of Chicken Feather Waste: From Extraction To Application Of Keratin-Based Bioproducts, Muhammad Ehtasham Akram

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation explores the optimization of chicken feathers keratin hydrolysate (CFKH) production using alkaline hydrolysis (AH) and sub-critical water hydrolysis (SCWH), focusing on acquiring high keratin yield in the hydrolysate. Then, CFKH along with other locally sourced materials, was used to develop bioplastics with regenerative agriculture properties (BioWRAP), with the ultimate objective of applying it as a soil mulch to suppress weeds in agricultural crops. This work also addresses challenges in process design and industrial scale-up of BioWRAP. Chapter 1 is a literature review that introduces terms like biobased, biodegradable, and bioplastics, materials and methods used to make bioplastics, and …

The Ethical Ramifications Of Using Insects In Art, Madalynn Lundy

Honors Projects

Artists have been in collaboration with living and dead beings since the beginning of time. Whether it be in the supplies used to create a piece of art or as the subject itself, insects are and have been a key part of art-making for many artists throughout history. This begs the question regarding the ethics of using insects in art and whether this is morally acceptable. I take interest in this topic as an artist who takes inspiration from insects in my own art. This paper explores various qualitative research methods in an effort to bridge the topics of environmental …

Ai-Driven Detection Of Failure Modes In Thermoplastic Composites Using Acoustic Emission Techniques, M. M. Shahzamanian, Li Ai, Paul Ziehl

Civil Engineering Faculty Publications

Composite materials in aircraft structures can suffer impact damage that leaves barely visible yet structurally significant defects, which degrade mechanical performance, especially under compressive loads. Existing methods for identifying failure modes in compression after impact (CAI) tests using acoustic emission (AE) data are limited in accuracy and scope. This study introduces an approach combining AE sensing with a heterogeneous ensemble convolutional neural network (CNN) to detect and classify failure mechanisms in impacted composite specimens. The novelty of this work lies in employing Red, Green, and Blue (RGB) wavelet images, produced through continuous wavelet transform (CWT) of AE signals, as inputs …

Developing A Framework To Improve Phishing Response After Detection, Kevin Umba

Master's Theses (2009 -)

Phishing belongs to the most prevalent attack vectors in the cybersecurity industry. Academia, industry, and government resources offer a wealth of information on the subject. However, insights on phishing techniques and remediations are scattered across those sources. Most governmental and academic literature focuses on user awareness, policy guidelines, or phishing training. This leaves the security practitioners underserved. Furthermore, actionable information for security operations is often unstructured or vendor-specific. The goal of the thesis is to provide a preliminary framework to guide security professionals through indicators of compromise and remediation, using a vendor-neutral approach.

Reliability And Validation Of A Game-Based Assessment Of Upper Limb Movement In Children With Unilateral Cerebral Palsy, Rachel Scheele

Master's Theses (2009 -)

Unilateral cerebral palsy (UCP) is a pediatric movement disorder characterized by motor impairment primarily affecting one side of the body. Clinical assessments of upper limb function are widely used but often lack precision and may be influenced by clinician subjectivity, thus creating a need for objective, reliable, and valid forms of assessment. Mobile health (mHealth) has shown promise in rehabilitation settings, due to its accessibility and user-friendly design. However, validity and reliability of these assessment tools remain largely unknown. MoEvGame was developed to evaluate upper limb motor function. This study evaluated the reliability and validity of MoEvGame in children age …

Applied Data Science Insights Into Grade Eight Math, Physics, And Ap® Physics Exam-Taking Influencing Act Stem Outcomes, Reema Banerjee

Dissertations (1934 -)

This study examined the longitudinal relationships among eighth grade mathematics proficiency, high school physics availability, AP® Physics exam participation, and ACT STEM scores across Wisconsin public school districts. A retrospective, multi-cohort design was used, and two cohorts were tracked from middle school through junior year. Publicly available datasets were analyzed using an applied data science approach in R, incorporating exploratory visualization, univariate and bivariate analyses, and multivariate regression modeling. Results indicated a positive association between eighth-grade mathematics proficiency and ACT STEM outcomes. AP® Physics exam participation emerged as a statistically significant independent predictor of ACT STEM scores after controlling for …

Foreign Language Experience Effects On L2-Accented Speech Attitudes In College Students, Jordan L. Ellington

Theses and Dissertations

The purpose of the study is to test whether knowledge of a second language in college students can affect perceptions and prejudices towards speakers with foreign accents. The testing was completed through both implicit and explicit attitudinal measures in regard to recorded audio stimuli. The explicit attitudinal testing was performed through participant self reporting of attitudes. Participants were presented with first (L1) or second (L2) language accented English samples and then rated that speaker in terms of various characteristics or traits that represented the speaker's solidarity and status. The implicit testing was performed in an Auditory Implicit Associations Test on …

Initiatives To Grow New Innovative Talent To Enable Fusion Energy, Peng Zhang, Ranganathan Parthasarathy, Yuqiao Fan, Arnold Lumsdaine, Rinkle Juneja, Yuchen Jiang, Monica Gehrig, Louise Ferris, David Donovan, Firas Akasheh, Olakunle Harrison, Joshua Schlegel, Manish Sharma, Mohammad Habibi, Mohan Rao, Rajni Chahal, Sean Walters, Vola Andrianarijaona

Achieve

The Initiatives to Grow New Innovate Talent to Enable Fusion Energy (IGNITE Fusion Energy) project was launched under the U.S. Department of Energy’s Reaching a New Energy Sciences Workforce (RENEW) program. This DOE RENEW-funded project is a multi‑institutional program that aims to build the future fusion workforce through mentoring, curriculum development, and innovation bootcamps. IGNITE brings together six academic institutions (Tennessee Tech University, Tennessee State University, Tuskegee University, Southern Adventist University, Missouri University of Science Technology, and University of Tennessee–Knoxville), Oak Ridge National Laboratory (ORNL) as a research and partnership hub, and 11+ private fusion companies for industry input and …

Water Velocity And Discharge From Tidal Freshwater Creeks In Forested And Herbaceous Wetlands, Austin S. Hudson, G. Curtis Roegner, Gary E. Johnson, David A. Jay

Civil and Environmental Engineering Faculty Publications and Presentations

Acoustic Doppler Current Profilers were deployed in four tidal creeks within forested swamps and herbaceous marshes in the lower Columbia River. Measurements were collected over 12 to 20-day periods during high and low river stage, and then analyzed using wavelet tidal analysis software (CWT_Multi) to characterize temporal variability of water elevation, velocity, and discharge. While subject to similar fluvial and tidal forcing, nuances in creek geometry led to large differences in their hydraulic response. Most obviously, creeks in the higher elevation forested swamps were hydraulically isolated, which limited subtidal discharge but increased tidal monthly variability of discharge in comparison to …

Modified Anodic Stripping Voltammetry For In Situ Analysis Of Liquid Metal Composition In Molten Salt Electrorefining Systems, James H. Manner

Reviews, Analyses, and Instructional Studies in Electrochemistry (RAISE)

The development of in-situ analytical techniques for high-temperature molten salt systems is critical for advancing electrorefining in nuclear fuel recycling and metallurgical purification. This study proposes Modified Anodic Stripping Voltammetry (MASV), using a “dip-and-strip” approach where a tungsten electrode captures molten Sn–Ni alloy before stripping in LiCl–KCl–CaCl₂ at 415 °C. OCP results showed rapid loss of the metal layer due to poor wetting, and stripping peaks gave compositions inconsistent with the alloy, likely reflecting Sn/Sn²⁺ and Sn²⁺/Sn⁴⁺ redox processes. These results highlight interfacial limitations and the need for improved electrode materials and surface modification.

A Machine Learning Framework For Ddos Attack Detection In Sdn-Enabled Mobile Wireless Networks, Ishita Sharma, Satyam Agarwai, Shashi Shekhar Jha, Sumit Chakravarty

Faculty Articles

Attacks on network components and devices pose a significant threat to service continuity, necessitating robust detection mechanisms. This paper presents a Distributed Denial of Service (DDoS) attack detection framework tailored for heterogeneous mobile wireless networks within a Software-Defined Networking architecture. A two-tier model is proposed: localized attack detection at access points (APs) using a Multi-Layer Perceptron (MLP) classifier, and centralized detection under mobility at the controller using a Long Short-Term Memory (LSTM) model. The system incorporates novel traffic features such as flow count, speed of source IP, source and destination IP address entropy, proportion of bidirectional flows, and handover frequency, …

Neurodiverse Secondary School Educators Transitioning To Online Teaching During Covid-19 Pandemic, Leane Pupo

Walden Dissertations and Doctoral Studies

The COVID-19 pandemic affected individuals, families, communities, and a variety of workplaces across the world. Many studies have addressed the impact of the emergency transition from on-ground to online on educators, students, and their families. However, while there is emerging literature on the impact of COVID-19 on neurodiverse individuals and on neurodiverse individuals in the workplace, there is little or no research on neurodiverse teachers. The purpose of this study was to explore the experiences of neurodiverse educators who transitioned from on-ground to online teaching during the COVID-19 pandemic. Bandura’s social cognitive theory of self-efficacy and Garmezy’s theory of resilience …

Thinking Towards The Future: Reflections On Engaging With Ai For Visual Data Presentation In Qualitative Research, Chloe Le, Anh Ngoc Quynh Phan

The Qualitative Report

This article reports our experience of exploring the use of ChatGPT to artistically present a segment of qualitative data in a visual form for one of our previous studies. We recounted our engagement with ChatGPT and reflected on our emotions and thoughts throughout the interactive process with this AI-powered tool for image generation. Our narrative analysis highlights the agency of ChatGPT as an active contributor to the creative endeavor and emphasizes our critical role as researchers in interpreting the data and in critically evaluating AI-generated images within the context of our research. The paper suggests that AI-text-to-image function can potentially …

Exploring Lay Meanings Of Happiness In Contemporary India: A Qualitative Inquiry, Kunmun Mishra, Kailash Bl Srivastava Professor

The Qualitative Report

Three decades of professional research suggest several explicit concepts of happiness; however, exploring the lay theories of happiness has largely been overlooked. Addressing this gap, our paper attempts to explore lay concepts of happiness in the contemporary Indian context. Given the inherently subjective nature of happiness, a qualitative study was conducted to explore the impact of beliefs and lived experiences on happiness. Data were collected through semi-structured in-depth interviews, and transcripts were analyzed using thematic analysis. Meanings, causes, and actions to maintain happiness evolved into seven significant themes: contentment, achievement and hope, collectivist orientation, autonomy, materialism, pragmatic orientation, and spirituality. …

Advancing Sustainability In The Indonesian Oil Field Services Landscape, Firmansyah Arifin, Sudarso Kaderi Wiryono, Sylviana Maya Damayanti, Gatot Yudoko

The Qualitative Report

This study examines sustainability practices in Indonesia's drilling and oil field services (OFS) industry, addressing a critical research gap from a business and management perspective. Using a qualitative case study approach, ten in-depth interviews with industry leaders identified key performance variables and developed a sustainability model specifically designed for the OFS drilling sector. The findings highlight three core dimensions: Internal Variables (e.g., Employee Health and Safety, CSR Initiatives, ESG Performance, Cost Savings, Energy Efficiency, Carbon Footprint Reduction), External Variables (e.g., Green Financing, Stakeholder Engagement, Community Welfare), and Performance. Novel contributions include operationalizing advanced HSE technologies like cyber rigs and tailored …

Vacuum Modification Of The Surface Properties Of T15k6 Hard Alloy By Plasma–Chemical Synthesis Of Tin-Cu Coatings, Aleksandr Semenov, Dmitriy Tsyrenov, Nikolay Ulakhanov, Irina Semenova, Undrakh Mishigdorzhiyn, Wen Ma, Simon C. Tung, George E. Totten

Mechanical and Materials Engineering Faculty Publications and Presentations

The design and main parameters of a plasma–chemical reactor containing two compartments are presented. One compartment houses a vacuum-arc evaporator, while the other houses a planar magnetron. The compartments are separated by a diaphragm with a dosing slot for injecting copper vapor into the TiN synthesis compartment. The conditions for the synthesis of superhard TiN-Cu composite coatings are experimentally determined. Based on established process parameters for TiN synthesis in a nitrogen-containing plasma by Ti evaporation using a vacuum-arc discharge, it is proposed to apply TiN-Cu coatings by injecting Cu vapor into the TiN synthesis area and sputtering Cu using a …

Expanding The Pantheon Of “Place-Myth”: Media-Induced Travel In College Students Who Study Abroad, Isabella M. Shevetz

Honors College Theses

Media-induced tourism refers to any travel that is in some part motivated by the consumption of mass media related to that location. Media-induced tourism and mass-tourism have led to nation branding and destination marketing across the globe, two industry phenomena that have worked to skyrocket tourism in places where it was not previously a large driver of the local economy. The expansion of mass media availability and the birth of social media mean the media roles of producer and audience member have blurred. Ordinary people now have the influential power of large media corporations. In destination marketing, the user-generated content …

Design For Future Discourse: Creating The Speculative Design-Inspired Exhibition Modulation: Rewiring The Self, Ryan Bridgforth

Honors College Theses

Humans have long combined speculation and design. Early examples like General Motors’ Futurama at the 1939 World’s Fair introduced Americans to the idea of expressways and invited them to imagine possible futures. While intriguing, this mix of design and future thinking stood to benefit corporations overall, which is where speculative design comes in. Pioneered by design duo Dunne & Raby, speculative design uses design not as a way to engineer solutions to difficult problems, but “as means to explore the cultural and technological potentials of design, effectively blurring material and conceptual boundaries” (Mitrović et al. 2021, 175). Designing objects or …

Distributed Authorship In Technologically Mediated Creativity, Patrick Carroll Dr

Staff Scholarship - Australia & Dubai

This paper examines the complex nature of authorship as it is reshaped within technologically mediated creativity. Drawing on theoretical perspectives on authorship, agency, and technological mediation, it argues against binary notions of artistic originality and instead frames the author as a “node” within a vast network of technological and cultural influences. Through two practice-based case studies—generative musical systems developed in Bitwig Studio’s The Grid, and the coding of an album-art generator in collaboration with OpenAI’s Codex—the paper explores how different forms of uncertainty emerge when creative decision-making is partially delegated to systems that behave unpredictably or autonomously. In these contexts, …

Evaluation Of Sirna-Mediated Knockdown Of Heat Shock Protein 16.2 In Adult Acropora Cervicornis, Edward P. Gniffke, Benjamin D. Young, Keir J. Macartney, Michael S. Studivan, Ian C. Enochs, Erin E. Easton

School of Earth, Environmental, & Marine Sciences Faculty Publications

Acropora cervicornis is a critically endangered Caribbean coral species facing a precipitous decline due to disease and thermal bleaching. To combat the loss of ecologically important reef-building corals, novel molecular approaches can be used to understand mechanisms of resilience and ultimately provide a means to modulate coral performance. In this study, we tested a recently developed method for gene knockdown in adult corals that utilizes short interfering RNAs (siRNAs) and the RNA interference pathway. The Heat Shock Protein 16.2 (HSP16.2) gene in fragments of adult A. cervicornis was targeted for knockdown using a single siRNA construct. RT-qPCR analysis of HSP16.2 …

Synthesis Of Citrate Based Polyesters, Emma E.C. Buckhalter

Honors Capstone Projects and Theses

No abstract provided.

Extraction And Interpretation Of Eeg Features For Diagnosis And Severity Prediction Of Ad And Ftd Using Deep Learning, Tuan Vo

Electronic Theses and Dissertations 2020 - Present

Alzheimer’s disease (AD) is the most common form of dementia and is characterized by progressive cognitive decline and memory impairment. Frontotemporal dementia (FTD), the second most prevalent form, primarily affects the frontal and temporal lobes and often leads to changes in personality, behavior, and language. Due to overlapping clinical symptoms, FTD is frequently misdiagnosed as AD. Electroencephalography (EEG) offers a portable, non-invasive, and cost-effective method for studying brain activity; however, its diagnostic utility for differentiating dementia subtypes is limited by signal complexity and noise. In this dissertation, I propose an EEG-based feature extraction framework that leverages deep learning to identify …

Environmental Counseling As A Proposed Discipline And Its Associated Implications And Uses, Alexandria Rion

Honors Projects

Individuals interact with their environment daily, and whether they realize it or not, these interactions can impact their health. Understanding the health impacts associated with the environment is important to human health at both an individual and population level. I am proposing a new field of environmental counseling that would incorporate principles from a variety of practices into one comprehensive discipline that can be used to promote public health. By studying populations that have had negative environmental exposures and looking at their outcomes, I was able to apply principles of environmental counseling to help determine if it would in fact …

Passenger Autonomy In Airport Systems: Integrating Accessibility, Spatial Design, And Technology To Improve Operational Efficiency, John Michael Schmitz

Honors Projects

Airports are among the most complex operational environments in modern transportation, requiring the coordination of passenger movement, security processes, and infrastructure under significant time constraints. Although there have been many advancements in aviation, most passengers continue to experience high levels of stress and confusion while trying to navigate airport terminals. This paper argues that operational efficiency in airport systems is achieved by increasing  passenger autonomy through the utilization of accessible design, spatial legibility, and new emerging technologies. This paper takes note of some foundational theories that drove urban design and cognitive psychology, including Lynch’s concept of imageability, Passini’s theory of …