Digital Commons Network^™

A Machine-Learning Approach To Predicting The Achievement Of Australian Students Using School Climate; Learner Characteristics; And Economic, Social, And Cultural Status, Myint S. Khine, Yang Liu, Vivek K. Pallipuram, Ernest Afari

Pacific Faculty Work

The Programme for International Student Assessment (PISA) is a global survey conducted by the Organisation for Economic Co-operation and Development (OECD) to assess educational systems by evaluating the academic performance of 15-year-old school students in mathematics, science, and reading. In PISA 2022, 13,437 students from Australia participated in the test. While the PISA main questionnaire assesses the subject knowledge, the student background questionnaire solicits contextual information such as school climate, learner characteristics, and socioeconomic status. This study analyses how these contextual variables predict student achievement using the machine-learning models Ridge Linear Regression, K-Nearest Neighbours, Decision Trees, eXtreme Gradient Boosting, and …

Interpreting Strain Caused By Transient Well Testing, Soheil Roudini

All Dissertations

Understanding reservoir properties and structure is essential to managing subsurface operations, such as geologic storage of CO₂ or production of water, hydrocarbons or heat. Previous work demonstrated the potential of analyzing strain data during transient well tests by estimating hydraulic diffusivity using a type-curve-like approach. The following dissertation aims to pursue this potential by developing and evaluating methods for interpreting strain tensor data to improve subsurface characterization. The research advances the classic, intuitive method of using type-curves to interpret well tests, but it also brings together modern computational methods from machine learning, proxy modeling and Bayesian inversion, and it …

Securing Modbus Via Proxied Approach, Kyle Korman

Masters Theses & Doctoral Dissertations

This study investigated the network performance of introducing a Transport Layer Security (TLS) proxy to secure the Modbus protocol. To address the lack of security of the Modbus protocol, a proxy based on Python’s socket, ssl, and threading packages was developed and tested. Additional network latency generated by the inclusion of this proxy was assessed for TLS handshakes, as well as Modbus operations. Statistically significant figures were generated, proving that this device introduces overhead (though negligible in implementations). A more featured proxy leaves a path open for future research. The study showed an avenue that could remedy problems present in …

Citation Bias, Diversity, And Ethics, Keisha S Ray, Perry Zurn, Jordan D Dworkin, Dani S Bassett, David B Resnik

Faculty and Staff Publications

How often a researcher is cited usually plays a decisive role in that person's career advancement, because academic institutions often use citation metrics, either explicitly or implicitly, to estimate research impact and productivity. Research has shown, however, that citation patterns and practices are affected by various biases, including the prestige of the authors being cited and their gender, race, and nationality, whether self-attested or perceived. Some commentators have proposed that researchers can address biases related to social identity or position by including a Citation Diversity Statement in a manuscript submitted for publication. A Citation Diversity Statement is a paragraph placed …

Student Employment: Analysis On Perceived Academic Progress Of Undergraduate Students Who Are Employed On-Campus Vs. Offcampus, Minnette Ellis

Masters Theses & Specialist Projects

This study explores the perceived academic progress of student employment, specifically differences between undergraduate students who are employed on-campus versus off-campus. The study used quantitative methodology and analyzed data from 342 students at a regional university to examine their self-reported GPA, time spent on schoolwork, and perceptions of how their employment impacted their academic success. The analysis indicated that students who were employed on-campus perceived their employment in a more positive terms related to their academic pursuits than students who were employed off-campus. There was no significant difference in the amount study hours spent between students who were employed on-campus …

Optimization Of Markov Chain Modeling In Predicting College Student Retention, Kien Nguyen

Journal of Global Education and Research

College student retention is one of the most important metrics in higher education. With institutions across the US facing decreasing enrollment, developing a reliable retention prediction method is crucial. In recent years, the use of the Markov chain model in forecasting student enrollment and progression has become more common, but there is little work on its application in student retention. One key factor in determining this model's effectiveness is what parameters should be used in the student population’s segmentation or grouping. This study presents a rigorous algorithm, coupled with a prediction model, capable of selecting parameters that provide the most …

Graduate List - December 2024, University Of Nebraska At Omaha

Commencement Lists

No abstract provided.

The Algorithm Of Fear: Unpacking Prejudice Against Ai And The Mistrust Of Technology, James Hutson, Daniel Plate

Faculty Scholarship

The mistrust of AI seen in the media, industry and education reflects deep-seated cultural anxieties, often comparable to societal prejudices like racism and sexism. Throughout history, literature and media have portrayed machines as antagonists, amplifying fears of technological obsolescence and identity loss. Despite the recent remarkable advancements in AI—particularly in creative and decision-making capacities—human resistance to its adoption persists, rooted in a combination of technophobia, algorithm aversion, and cultural narratives of dystopia. This review investigates the origins of this prejudice, focusing on the parallels between current attitudes toward AI and historical resistance to new technologies. Drawing on examples from popular …

From Concept To Creation: The Role Of Generative Artificial Intelligence In The New Age Of Digital Marketing, Andrew Smith, James Hutson

Faculty Scholarship

Artificial intelligence (AI) has been extensively used in digital marketing. Still, the recent advances in generative AI (GAI) have revolutionized social media marketing and content creation, lowering barriers that once restricted high-quality design to professionals well versed in expensive and complex software like Adobe Suite. GAI tools enable anyone, from students to marketers, to generate logos, branding, and multimedia content without extensive training. This shift has empowered more people to engage in creative expression, expanding the pool of ideas and creativity. However, the abundance of AI-generated content raises questions about the evolving definition of “art” and the emergence of a …

Algotric: Symmetric And Asymmetric Encryption Algorithms For Cryptography – A Comparative Analysis In Ai Era, Naresh Kshetri, Mir Mehedi Rahman, Md Masud Rana, Omar Faruq Osama, James Hutson

Faculty Scholarship

The increasing integration of artificial intelligence (AI) within cybersecurity has necessitated stronger encryption methods to ensure data security. This paper presents a comparative analysis of symmetric (SE) and asymmetric encryption (AE) algorithms, focusing on their role in securing sensitive information in AI-driven environments. Through an in-depth study of various encryption algorithms such as AES, RSA, and others, this research evaluates the efficiency, complexity, and security of these algorithms within modern cybersecurity frameworks. Utilizing both qualitative and quantitative analysis, this research explores the historical evolution of encryption algorithms and their growing relevance in AI applications. The comparison of SE and AE …

175th Commencement, Fall

Commencement Programs

Commencement program (graduate and undergraduate exercises) for Fall 2024

Exploring The Interplay Among Effort, Motivation, And Self-Efficacy In High School Mathematics And Act Math Achievement, Katrina Lightsey

Dissertations

This study examines the relationship between high school students' attributions of effort, motivation, and self-efficacy as they relate to ACT math scores. Despite the important role of standardized tests in determining college admissions, there has been little research conducted to determine how students feel about these attributions and how they relate to math grades and ACT scores. A total of 52 juniors and seniors from local high schools participated in this study, which was conducted over the summer through voluntary participation following email invitations. The study was designed to measure students' self-reported effort, motivation, and self-efficacy using a survey instrument. …

The Interplay Of Covid 19, Organized Religion, And Social Media: “How Can I Be The Person I Feel I Need To Be?”, White Dove Bryant Beethoven Keith Short

All-Inclusive List of Electronic Theses and Dissertations

Young adults are disaffiliating themselves from organized religion (Hout & Fischer, 2014). This study investigates the impact of social media use on religious identity, teaching, and learning. Social media use is changing young adults as individuals in worldview and perspective, spirituality, religion, and personal lifestyle (Schaeffer, 2019). Messages devised for young adults by Christian ministers for discipleship in teaching and instruction are inharmonious with young adults and their personal views of the world, how to live, and religion (Pew Research Center, 2019). The continued existence of religious teaching, congregant replenishment, and practice of the organized institutional Christian church within society …

Breaking Bad- The Third Circuit's View In United States V. Lewis Mischaracterizes Uniformity In Federal Sentencing, Noah Swanson

Villanova Law Review (1956 - )

No abstract provided.

Modeling Pricing And Profit Testing Of Chronic Disease's Insurance Policies Using Prostate Cancer Data In Kenya, Cynthia Mwau, Howard Omukami

Institute for Educational Development, East Africa

Chronic diseases have been on the rise globally and more so in the African continent. Treatment of chronic diseases requires lots of finances hence posing a challenge even to those people who are considered financially stable. Chronic diseases are expected to rise even further due to the rapid lifestyle change. In an attempt to mitigate the challenge of accessing treatment for chronic diseases, we develop a model for pricing and profit testing chronic disease insurance policy using the modified equivalence principle. We use the Kenyan mortality tables for the computation as they reflect the true mortality rate of the population …

Iowa Waste Reduction Center Newsletter, December 2024, University Of Northern Iowa. Iowa Waste Reduction Center.

Iowa Waste Reduction Center Newsletter

Contents:

--- Meet Drew Miller
--- Farewell Kendall
--- IWRC Advisory Member Updates
--- Changes Coming to Online Painter Training
--- January Reporting Deadlines
--- IAEP: 30 Years of Supporting Iowa Small Businesses

Influence Of Hygrothermal Conditions Of The Bistability Of Asymmetric Carbon Fiber Laminate Composites, Celia Hill

All Theses

Carbon fiber-reinforced polymer (CFRP) laminates have widespread use in many industries because of their exceptional strength-to-weight ratio. Carbon fiber laminates following an asymmetric layup orientation can exhibit bistability meaning the laminate can exist at two stable geometric configurations. The morphing characteristics of bistable CRFP has a growing level of interest because of its potential in various applications including space aircraft structures for easy repair, automotive structures for energy dissipation and ergonomics, robotics for flexible motion and energy harvesting. Existing research shows that both moisture and temperature affect the material properties and behavior of CFRP laminates, however, the influence of moisture …

Robust Learning With Probabilistic Relaxation Using Hypothesis-Test-Based Sampling, Zilin Wang

Dissertations and Theses Collection (Open Access)

In recent years, deep learning has been a vital tool in various tasks. The performance of a neural network is usually evaluated by empirical risk minimization. However, robustness issues have gained great concern which can be fatal in safety-critical applications. Adversarial training can mitigate the issue by minimizing the loss of worst-case perturbations of data. It is effective in improving the robustness of the model, but it is too conservative, and the plain performance of the model can be unsatisfying. Probabilistic Robust Learning (PRL) empirically balances the average- and worst-case performance while the robustness of the model is not provable …

Publisher Correction: Observation Of Dense Collisional Soliton Complexes In A Two-Component Bose-Einstein Condensate (Communications Physics, (2024), 7, 1, (163), 10.1038/S42005-024-01659-W), Sean M. Mossman, Garyfallia C. Katsimiga, Simeon I. Mistakidis, Alejandro Romero-Ros, Thomas M. Bersano, Peter Schmelcher, Panayotis G. Kevrekidis, Peter Engels

Physics Faculty Research & Creative Works

In the first paragraph of the Methods section, the sentence "We begin with an elongated BEC of approximately 9 x 10587Rb atoms…," has erroneously been written without a space between the two superscripts "5" and "87". This has now been corrected in both the HTML and PDF of the article, and the same expression reads: We begin with an elongated BEC of approximately 9 x 105 87Rb atoms…"

A Hybrid Feox/Coox/Pt Ternary Nanocatalyst For Augmented Catalysis Of Formic Acid Electro-Oxidation, Ahmad M. Mohammad, Bilquis Ali Al-Qodami, Islam M. Al-Akraa, Nageh K. Allam, Hafsa H. Alalawy

Faculty Journal Articles

Platinum-based catalysts that have long been used as the anodes for the formic acid electro-oxidation (FAO) in the direct formic acid fuel cells (DFAFCs) were susceptible to retrogradation in performance due to CO poisoning that impaired the technology transfer in industry. This work is designed to overcome this challenge by amending the Pt surface sequentially with nanosized cobalt (nano-CoOx, fibril texture of ca. 200 nm in particle size) and iron (nano-FeOx, nanorods of particle size and length of 80 and 253 nm, respectively) oxides. This enriched the Pt surface with oxygenated groups that boosted FAO and mitigated the CO poisoning. …

Comparison Of Autoclaving And Γ-Radiation Impact On Four Spices Aroma Profiles And Microbial Load Using Hs-Spme Gc–Ms And Chemometric Tools, Mostafa H. Baky, Nora M. Elkenawy, Heba A.S. El-Nashar, Bishoy Abib, Mohamed A. Farag

Faculty Journal Articles

Herbal spices are widely consumed as food additives owing to their distinct aroma and taste as well as a myriad of economic and health value. The aroma profile of four major spices including bay leaf, black pepper, capsicum, and fennel was tested using HS-SPME/GC–MS and in response to the most widely used spices´ processing methods including autoclaving and γ-radiation at low and high doses. Additionally, the impact of processing on microbial contamination of spices was tested using total aerobic count. GC–MS analysis led to the identification of 22 volatiles in bay leaf, 34 in black pepper, 23 in capsicum, and …

Co2 Capture Utilizing Novel Deep Eutectic Solvents: Modeling, Process Simulation, And Cost Analysis, Nazneen Aspi Kolah

Masters Theses

One of the most pressing global issues that humans face is climate change caused by anthropogenic greenhouse gas emissions, especially carbon dioxide (CO2). Conventional solvents utilized for CO₂ capture, such as amines, are widely used in industrial applications due to their high CO2 absorption capacity. However, deep eutectic solvents (DES) have attracted a lot of academic attention recently due to their biodegradability and low energy for regeneration.

This research serves as a foundational proof-of-concept for using DESs in industrial gas separation processes. Five DES are evaluated for CO2 removal from flue gases. Aspen Plus is utilized to simulate the performance …

Design, Manufacturing, And Assembly Of Modular Snake-Like Robotic Arm, Alongside Design And Implementation Of System’S Digital-Twin, Scott Brown

Master's Theses

A unique modular snake-like robotic arm, also referred to as MA\RS – the Modular Arm \ Robotic System - was designed, manufactured, assembled, simulated, and programmed to create a modular robot which could move to a desired end position given the number of links, the position of the end link and the duration of motion. This robotic arm serves as the start of research into a modular space robotic system to be used in low-gravity environments. As such, this project focused on developing the initial design of the robot and its digital twin. The system’s modularity allows for changes to …

An Investigation Into The Use Of Amateur Astronomy Equipment For Optical Orbit Determination Using A Mobile Telescope Platform, Johan C. Govaars

Master's Theses

The process of optical orbit determination has long been in the domain of large organizations and stationary observatories with highly specialized scientific equipment. This thesis seeks to determine not only if satellites can be captured regularly using purely commercial-off-the-shelf (COTS) equipment, but also if initial orbit determinations can be made using that data. Moreover, the use of a mobile telescope platform allows users to circumvent the restrictions of fixed observatories such as low horizon viewing restrictions or existing light pollution.

A completely COTS setup was utilized that included an 8-inch Celestron NextStar 8SE telescope with an f/6.3 focal reducer and …

Generating A Novel Legislator Organization Score, Brandon Lin

Master's Theses

Ever since the 2010 Citizens United v. FEC, corporations and organizations have been able to contribute expenditures and resources into political legislators and campaigns. It has become apparent over the years that organizations can excise significant influence in direct ways to influence campaigns across the United States. During this period, Digital Democracy has collected large amounts of data pertaining to legislative bill information, voting patterns, and donations on behalf of the California public to raise awareness. Digital Democracy has also released its own scoring system that compares the amount of aligning votes between a legislator and an organization. However, this …

An Analysis Of Policies, Practices, And Barriers To Create A Multi-Dimensional Approach To Renewable Energy Transition For Us Communities, Hanan Wehbi

Graduate Theses and Dissertations

The transition from fossil fuel-derived energy resources to clean, renewable, affordable, and reliable energy necessitates a comprehensive approach. This approach must incorporate an interdisciplinary contribution to ensure the sustainability, efficiency, and resilience of the energy system. In the United States, many communities and local governments are developing ambitious plans, regulations, and targets to support the renewable energy transition and enhance energy efficiency. This research builds on the principles of sustainable development planning and transition theory to develop a framework that assists communities in planning their renewable energy (RE) transition and integrate these plans in their long- and short-term development approaches. …

Utahns’ Generally Agree On Top Environmental Concerns, But Climate Change And Related Issues Reveal Political Polarization, Sarah E. Wilson, Jessica Ulrich-Schad

Utah People and Environment Poll (UPEP)

Utah is renowned for its unique landscapes and abundant opportunities to connect with the natural environment. However, the state is currently grappling with serious environmental challenges, including poor air quality, dwindling water supplies, and the alarming desiccation of the Great Salt Lake. These and other issues have major ecological and economic implications, and combating them will likely require large scale efforts. However, rising levels of political polarization are a common problem in the United States that many feel stifles our ability to combat societal problems, including those related to the environment and human health.

Aged 539- Internship In Agriculture Education - Waterford High School, Jennifer Pierce

Agricultural Education: Graduate Internship Reports

This report explores the development and implementation of an agricultural education program plan aimed at enhancing student engagement, community involvement, and career readiness. Drawing from established models of program planning and needs assessment, the report focuses on the integration of instructional strategies, supervised agricultural experiences (SAEs) and FFA involvement to foster comprehensive student development. The plan outlines key goals such as increasing student enrollment, improving curriculum alignment with industry standards, and expanding partnerships with local agricultural stakeholders. Strategies include curriculum enhancement, teacher professional development, and the use of data-driven decision-making. The report also emphasizes the importance of evaluation and continuous …

Video Game Development 3.0: Ai-Driven Collaborative Co-Creation, Jay Ratican, James Hutson

Faculty Scholarship

The evolution of game development has transitioned from manual coding (Software 1.0) to data-driven Artificial Intelligence (AI) (Software 2.0), and now to a more advanced stage—video game development 3.0. This phase is characterized by AI-driven processes leveraging large language models (LLMs), neural networks, and other AI techniques that autonomously generate code, content, and narratives. This paper explores the foundational technologies underpinning this paradigm shift, including customizable AI modules, dynamic asset creation, and intelligent non player characters (NPCs) that adapt to player interactions. It also highlights the integration of AI with emerging technologies like Virtual Reality (VR), Augmented Reality (AR), and …

Wide-Angle Non-Uniform Optical Phased Array Using Compact And Efficient Antenna Design, Omar E. Elsheikh, Mohamed A. Swillam

Faculty Journal Articles

In the need for a more compact and efficient optical phased array with a wide steering beam for LIDAR applications, a wide steering array with high resolution is desirable. However, in the published work, a trade-off is often made for one over another. Apodized grating antennas have shown good efficiency with a compact size and wide beam profile, which improve optical phased array beam steering capability and are also compatible with the CMOS silicon photonics process. A promising studies shows enhancement in steering range with good resolution utilizing a non-uniform optical phased array. In this work, we present two highly …