Digital Commons Network^™

Micro-Topographic Control On Soil Moisture And Ph Dynamics In A Northern Peatland Ecosystem: A Case Study From Saco Heath, Maine, Henry Mahoney

Student Publications

Peatland ecosystems are characterized by complex structural microtopography, prominently featuring elevated hummocks and depressed hollows that establish critical micro-environmental and ecohydrological gradients. This study investigates the influence of micro-topographic positioning on soil moisture and pH dynamics at the Saco Heath Preserve; a raised acid bog located in southern Maine. Data collection was focused entirely within Sphagnum moss, which serve as the dominant vegetative component across multiple structural hummocks and hollows. Using a systematic temporal framework and a robust spatial sampling strategy (n = 100 per micro-habitat) between July 16 and August 16, we quantified physical moisture contents and chemical pH …

Production Of Seismic-Resistant Steel From Scrap With Up To 0.6% Copper, Iman El-Mahallawi, Ahmed Ramadan Seada Dr.

Mechanical Engineering

Earthquake-resistant steel grades of characteristic value defined by the ratio (UTS/YS) greater than 1.25 are verified through controlling the proportion of alloying elements in steel. This work illustrates a novel idea to produce earthquake-resistant steel grade utilizing steel scrap. Different heats were produced containing varying levels of copper, manganese, and silicon, along with deep desulfurization. The heats were hot rolled to diameters of 10, and 16 mm, followed by Tempcore process. JMatPro software was used to predict the formed phases. The chemical composition was determined by optical emission spectrometry. The tensile properties were determined by tensile testing, and bend testing …

The Integration Of Psychology And Theology: An Examination Of Personality And Spiritual Gifts In Christian Formation, Vocation, And Everyday Ministry, Suzannah W. Driver

Doctor of Ministry (DMin)

Human beings are created in the image of God, formed through relationship with Him, and empowered by the Holy Spirit to participate in His mission. Yet personality and spiritual gifts are often considered separately, leaving believers with fragmented language for understanding who they are, how they have been formed, and how they are called to serve. Psychology offers meaningful insight into patterns of thought, emotion, behavior, and relationship, while theology grounds identity in divine creation, spiritual formation, and Spirit-empowered purpose. When these perspectives remain divided, believers may understand parts of themselves without recognizing how those dimensions work together within the …

Framework For Building A Social Media Marketing Strategy For Micro-Small Businesses, Joanna Byrne

Theses

Existing social media marketing literature consistently fails micro-small businesses with five or fewer staff. These sources default to models built for brands with dedicated marketing teams and large budgets. This project addresses that gap using a mixed-methods, practitioner-based action research design. It combines quantitative platform analytics with qualitative process documentation. The research covers four businesses at distinct stages of digital development: Torched Motorsport Supply, a new automotive parts retailer built from zero digital infrastructure; Byrne Diesel Performance, an established diesel shop with an unoptimized presence; Texas Best Compost, a startup developing its brand identity and digital launch disrupted by supply …

Color Shift: A Graphic Design Process Book Exploring How Color And Motion Influence Emotional Perception And Brand Connection In Affordable Women's Fashion Jewelry, Elizabeth Voight

Theses

This study examines how manipulating color and motion within a single brand identity system influences consumer emotional response and brand consistency. Using a fictional modern jewelry brand, Quanta & Co., the research isolates color as the primary variable by applying nine distinct mid-range color palettes to identical layouts, logos, and structures across both print and digital touchpoints. These collateral assets include jewelry packaging, vehicle wraps, digital advertisements, and an animated logo. A quantitative survey was executed to capture real-time audience impressions regarding brand traits, perceived quality, and the overall alignment of each color variation with the brand's identity.

The findings …

Quiet Relief: Voice In Migraine Packaging, Nicole Allgeyer

Theses

This paper explores typography as a form of nonverbal communication in pharmaceutical branding for a fictional medication called Neura by investigating how font choice, visual hierarchy, spacing, and color function as communicative tools to its viewers. This paper combines the studies of semiotics and branding to create a brand that evokes trust, calm, and clarity through a visual branding system. This study investigates visual signifiers (semiotics) such as color and type through visual analysis and implements the findings into the brand. By researching branding, I was able to create a brand that has a focused demographic and image. In creating …

Ethical Visual Truth: An Analysis On Vietnam War Photojournalism, Anna Lauryn Carmichael

Theses

This thesis examines the ethical dimensions of Vietnam War photojournalism through close analysis of four iconic photographs: Nick Ut's The Terror of War (Napalm Girl) , Eddie Adams's Saigon Execution , Catherine Leroy's Vietnam, February 1967 , and Gilles Caron's Untitled (Who's the Enemy Here?) . Rather than treating these images as transparent documentation, this thesis argues that Vietnam War photojournalism functioned as a contested medium of narrative construction, one whose most celebrated images achieved iconic status by conforming to Western visual conventions and institutional demands, rather than by capturing some unmediated truth. Drawing on the interconnected frameworks of visual …

From Grid To Freedom: A Comparative Analysis Of Canva’S Guardrails And Adobe Illustrator’S Design Flexibility, Caroline Wilmes

Theses

This project focuses on graphic design software becoming increasingly accessible and questions emerging regarding the role of professional designers and the value of industry-standard design tools. This project examines the differences between Canva, a widely used template-driven design platform, and Adobe Illustrator, a professional vector-based design application. Through a hands-on, project-based research approach, the same brand identity was developed in both programs, including a style guide, business card, website homepage mock-up, and tri-fold. The comparison focused on workflow efficiency, creative freedom, typography, color management, scalability, and production readiness.

Findings revealed that Canva excels in accessibility, speed, and ease of use …

Visual Structure, Cultural Memory, And Viewership In Early Medieval Irish High Crosses, Trinity Smith

Theses

This thesis examines how Irish high crosses functioned as structured visual forms through which religious authority and cultural memory were communicated within early medieval Ireland. Previous scholarship has emphasized the theological coherence of these monuments, often assuming a single idealized viewer. This study reconsiders Irish high crosses through the concept of multiple viewership by examining how different audiences may have encountered and understood these monuments. Using comparative visual and contextual analysis, this study examines four case studies: the Cross of the Scriptures at Clonmacnoise, Muiredach’s Cross at Monasterboice, the High Cross of Durrow, and the Market Cross at Kells. This …

The Significance Of Abstract Art In Self-Expression: A Study Developed By Analyzing Kandinsky's Black Lines And Producing Visual Juxtapositions, Keturah K. Bowles

Theses

This paper will contemplate how the creation of abstract art, a creative style born from the Avant-Garde movement of the 20th century by artists such as Wassily Kandinsky, was imperative in the pursuit of artistic freedom. Additionally, it will seek to prove that abstraction is one of the unparalleled genres to utilize for self-expression in comparison to genres that uphold traditional art techniques, such as realism. This theory is further emphasized when considering abstract art in juxtaposition to the art standards maintained by the academy. Moreover, the research conducted to support the proposed theory falls into various categories, such as …

Web Of Sisterhood: Somehow Connected, Catherine Scott

Theses

This thesis project is about the connection between female community (sisterhood) and art-making practices. This connection is explored through qualitative research, including research in art history, feminism, community interviews, and personal experience. The connection between sisterhood and art-making is expressed through the construction and development, as well as the visual elements, in the final project. Communication and collaboration with women in my community about the artwork and our connections as women shaped how the work would be constructed, as well as the imagery and colors used in the final piece.

Lab Escape, Peter Brauninger

Theses

The core subject of this paper focuses on several key traits of effective horror games. Using a paper and prototype level, the project conducts a thorough examination of horror in the medium to better understand how to develop effective games in this genre. Looking at examples from different media, the objective of this research is to identify key components of effective horror games. Going through the research, we can identify three key traits that are critical to the genre. Within horror games, accuracy of these elements is even more essential. Having the player be constantly tense, and enjoying the game …

Seeing Power: Authority, Gender, And Spectatorship In Charles I And Henrietta Marie With Their Two Eldest Children, Prince Charles And Princess Mary (1632), Danielle Scaramuzzi

Theses

The visual construction, enactment, and legitimization of political authority is the subject of this thesis concerning Charles I and Henrietta Maria with their two eldest children, Prince Charles and Princess Mary (1632), painted by Anthony Van Dyck. Through examination of sovereign representation, gendered body, dynastic continuity, and spectators, this research argues that authority within Northern Baroque portraiture is not established as a single or unchanging entity. However, instead of a monolithic representation of authority, it arises from relational elements, including body language, gesture, space, family relations, and viewer engagement. Although Van Dyck's portrait is generally considered a dynastic image in …

Identity Development For Queer East Asian Americans During The Coming Out Process To Family, Mei E. Tam

Doctoral Dissertations

There has been a growing number of Asian Americans who openly identify as queer, with over half a million residing in the United States (UCLA, 2021). Despite this, psychological research has paid limited attention to how queer and Asian American identities intersect and are integrated, often framing them as conflicting while overlooking culturally embedded meaning-making processes. The present study explored identity formation among cisgender queer East Asian Americans during the critical period of coming out to family, focusing on how their understanding of and relationship to their queer and ethnic identities shifted following disclosure.

Using a qualitative approach, semi-structured interviews …

The Bridwell Quarterly, Issues 32 & 33, Spring-Summer 2026, Michelle S. Ried, Anthony Elia

Bridwell Library Publications

No abstract provided.

Preparing Today’S Workforce For Tomorrow’S Autonomous Transportation: Bridging Electrical And Civil Engineering Disciplines, Masoud Ghodrat Abadi, Rohollah Moghadam

Mineta Transportation Institute

Autonomous vehicles (AVs) are expected to transform transportation systems and reshape workforce needs across engineering and related fields. Although existing AV workforce development efforts often emphasize electrical engineering, computer science, and mechanical engineering, transportation engineering remains underrepresented despite its importance to infrastructure, traffic operations, safety, and mobility integration. This study addresses that gap through the development, implementation, and evaluation of an interdisciplinary certificate program, Workforce for Autonomous Vehicle Engineering (WAVE), at California State University, Sacramento. The program was designed to bridge transportation engineering and electrical engineering through a two-step curriculum model consisting of theoretical educational modules and hands-on laboratory activities. …

Mitigating Negative Consequences Of New Urban Growth In Disadvantaged Communities, Shishir Mathur, Christopher E. Ferrell, Cindy Adrian

Mineta Transportation Institute

New housing and development in California are often planned in communities that already face economic hardship, environmental burdens, and limited access to reliable transportation. Recent research finds specifically that in the San Francisco (S.F.) Bay Area and Southern California (SoCal) metropolitan regions, there is a high propensity to plan new urban development in socially, economically, and environmentally disadvantaged communities (DACs) with poor transit accessibility and limited personal mobility. This project first reviews the literature to identify potential unintended negative impacts of high concentrations of new urban growth in DACs across social, economic, educational, environmental, and transportation dimensions. It then identifies …

Fraud And Focus: Examining Self-Control Strategies In Students Experiencing Impostor Phenomenon, Francesca Angela Catalano

Theses and Dissertations

Impostor phenomenon (IP) is a common experience among individuals in achievement contexts characterized largely by feelings of self-doubt, attributions of success that focus on external factors, and beliefs that one is “fooling” others about their competence. Current research suggests the effects of IP are complex (e.g., IP is associated with higher grade point average and productivity but also self-handicapping, psychological distress, and difficulties adjusting to college). To better understand these complex effects, this study proposes a self-control perspective for IP, where this phenomenon is seen as involving additional self-control burdens. Specifically, the study examines whether IP is associated with grade …

On The True Interstellar Anisotropy Of Tev Cosmic Rays And Its Implications For The Local Interstellar Medium, Noufel D. Maalal

Theses and Dissertations

Several ground-based cosmic ray (CR) air shower experiments have produced sky maps of intensity anisotropy in the energy range from 1 TeV to a few hundred TeVs with very high statistics and angular resolution. These measurements provide opportunities to study CR sources and propagation in the interstellar medium (ISM). Such studies present two major difficulties. Firstly, CRs are deflected by the heliospheric magnetic field on the last stretch of their journey to Earth. Secondly, measurements at different latitudes are difficult to compare, leading to uncertainties in latitudinal variations on the order of the observed anisotropy. Experiments usually assume latitudinal variations …

An Individual Participant Data Meta-Analysis Of How Physical Activity Relates To Affective Well-Being In Daily Life, Johanna Rehder, Irina Timm, Gesa Berretz, Iris Reinhard, Andreas B. Neubauer, Onur Güntürkün, Keisuke Takano, Walter Bierbauer, Miriam Cabrita, Matthew Bourke, Joshua Smyth, Jinhyuk Kim, Johannes Michalak, Joshua Curtiss, Björn Pannicke, Jacob B. Gallagher, Ana M. Abrantes, Toru Nakamura, Yoshiharu Yamamoto, Paul Cook, Lena M. Wieland, Birte Von Haaren-Mack, Bryan Mccormick, Justin Hachenberger, Tomas Vetrovsky, Benajmin Henwood, Louise Poppe

Psychology Faculty Publications

Physical inactivity constitutes a pressing societal problem. To realize physical activity’s (PA) potential as a key health resource, mechanisms of PA engagement need to be understood. Laboratory and interventional studies documented that exercise relates to affective well-being (AWB) and suggested that AWB may shape PA behaviour. Digitalization enabled the investigation of how PA relates to AWB in everyday life, but findings from individual studies are ambiguous. Here we compiled 67 datasets (55.2% of eligible records) including 321,345 smartphone-based AWB ratings and nearly 1,000,000 h of accelerometer-measured PA (N = 8,223 participants) until December 2023 to clarify the nature and extent …

“I Was Nobody In The Us”: A Phenomenological Examination Of Indian Women On H-4-Dependent Visas Navigating Higher Education In The United States, Tanu Priya

Social Justice in Educational Leadership EdD Dissertations

The purpose of this phenomenological study was to examine the lived experiences of Indian women on H-4-dependent visas as they navigated higher education in the United States. Framed by intersectionality (Collins, 2000; Crenshaw, 1989, 1991) and guided by van Manen’s (1990) hermeneutic phenomenology, this study employed semi-structured interviews to explore the experiences of Indian women on H-4-dependent visas (n=5). Using in-depth interviews and reflexive memo writing as methods of data collection, analysis uncovered four themes which captured how participants navigated higher education, identity, and well-being under conditions of legal dependency: “The Weight of Legal Dependency,” which captured participants’ experiences of …

Evaluating Relationships Between Immunometabolism And Excess Adiposity Using Anthropometric And Body Composition Measurements, Corina Grimaldo

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Metabolic dysfunction is a key contributor to the development of chronic disease and is associated with excessive adiposity. Though body mass index (BMI) is a common screening tool used to identify possible metabolic dysfunction, it does not consider fat distribution. Other tools are needed to assess body composition and determine fat distribution. In recent studies, it has been suggested that alterations in metabolic processes may occur prior to a clinical diagnosis, and the combination of body composition and blood-based markers can help identify those early changes. The overall objective of this study is to identify low-cost indicators of metabolic dysregulation …

Evaluating Variety- And Market-Class-Specific Effects Of Dietary Pulses On Human Health, Jiayu Tang

Department of Food Science and Technology: Dissertations, Theses, and Student Research

While pulses are globally recognized for their high levels of dietary fibers, protein, and polyphenols, research often focuses on characterizing the physiological effects of a single variety. This approach overlooks the substantial genetic and compositional diversity that exists across pulse varieties and individual market classes, which can differ extensively in nutrient content and structure. These compositional differences have the potential to produce distinct physiological and microbial responses in humans, yet variety- and market-class-specific effects remain poorly characterized.

This thesis uses two complementary research methodologies to investigate the health-relevant effects of different pulse varieties and market classes, providing foundational knowledge to …

Communication And Prosocialization: Understanding The Development Of Inclusive Morality, Hannah Smith

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

Relationships between individuals from different social or cultural groups are often impacted by ingroup favoritism, outgroup bias, and structural inequity determined by a person's social and cultural identities. Recognizing this, scholars and practitioners for the last few decades have attempted to address this by creating interventions, workshops, and other applied programs that aim to reduce this intergroup bias and ameliorate the negative consequences. The current dissertation complements this body of applied scholarship by shifting the focus from reducing and minimizing bias to focusing on processes that lead to a more prosocial and inclusive worldview.

The overall aim is to understand …

Classification Of Aircraft Checklist Usability Problems Using Natural Language Processing, Borvorn Kasemtanakul

Doctoral Dissertations and Master's Theses

The use of checklists has been identified as a recurring issue in aviation accident investigations, highlighting the need for continued improvement in aircraft checklist design. However, existing aviation safety taxonomies do not systematically address checklist usability problems. Therefore, a systematic classification of these problems is needed to support the extension of existing aviation safety taxonomies and to facilitate safety data analysis for checklist design improvements. Furthermore, applications of Natural Language Processing (NLP) techniques in aircraft checklist research remain underexplored, despite their potential to identify meaningful patterns in textual safety data.

This exploratory research aimed to develop a data-driven classification of …

Optimal Integrated Cfd-Gnc Model For Drag-Based Reentry Dynamics, Sebastian Lopez

Doctoral Dissertations and Master's Theses

This research focuses on optimizing the control of a drag-maneuvering, Starship-class re-entry vehicle by closely integrating high-fidelity aerodynamic data derived from Computational Fluid Dynamics (CFD) simulations, specifically using StarCCM+. The aerodynamic models, tailored to the unique geometry of a drag-maneuvering body, are seamlessly incorporated into a guidance, navigation, and control (GNC) framework. This integration enables closed-loop CFD simulations with real-time control feedback, allowing for direct analysis and optimization of vehicle stability, trajectory, and control demands throughout the re-entry process.

Building upon the work of Gaglio and Bevilacqua, this advanced CFD-GNC model introduces high-order aerodynamic effects, such as aerodynamic moments and …

A Machine-Learning-Based Systematic Framework For Modeling Compression And Recompression Indices For Florida Soils, Michael Morales

Doctoral Dissertations and Master's Theses

This thesis develops a machine-learning framework for estimating the compression index and the recompression index of Florida soils from routinely measured index properties, and reports two studies that build it. Consolidation settlement design requires both indices, and both are obtained from the incremental-loading oedometer test, which occupies a specimen for one to two weeks; the index tests that accompany it are complete within hours. Empirical correlations have filled that interval since the 1950s, but their coefficients are calibrated on specific soil populations and transfer poorly between regions. The first study analyzes 376 consolidation tests compiled for the Florida Department of …

Evaluating The Safety Efficiency Of U.S. Air Traffic Control Tower Operations Using Data Envelopment Analysis, Kenneth James Gilbert Ii

Doctoral Dissertations and Master's Theses

Air traffic control (ATC) tower safety efficiency remains inadequately measured despite critical workforce challenges, including staffing shortages, training pipeline constraints, and geographic retention difficulties. This mixed-methods study developed and validated a comprehensive framework for measuring tower safety efficiency by integrating subject-matter expert insights with multi-model data envelopment analysis (DEA) across 66 Federal Aviation Administration (FAA) tower facilities from 2016 to 2024. Six focus group interviews with experienced professionals (100% with > 20 years of experience), averaging 96.4 minutes, identified critical efficiency factors through systematic coding, achieving substantial inter-rater reliability (Cohen's kappa 𝜅 = .68). Qualitative findings showed that staffing shortages don't …

Noise-Optimized Routes For Air Taxi, Waleed Raza

Doctoral Dissertations and Master's Theses

Community noise is a primary barrier to the public acceptance and deployment of Advanced Air Mobility (AAM) and Urban Air Mobility (UAM) air taxi operations. This dissertation develops a coupled siting, routing, and noise optimization framework that links vertiport placement to its downstream acoustic consequences, demonstrated through a Daytona Beach case study. Candidate vertiports are screened and selected using accessibility, safety, demand, and feasibility criteria, and the selected sites form a directed network of 20 routes. Each trajectory is evaluated with a physics-based acoustic pipeline reporting Lmax, SEL, and EPNL at school, hospital, and residential receptors, showing that received exposure …

Multi-Parametric Nonlinear Programming For Lossy Lmp Sensitivity Analysis Using Outer Progressive Cuts, Yuhan Huang, Tao Ding, Chenggang Mu, Rui Bo, Pengwei Du

Electrical and Computer Engineering Faculty Research & Creative Works

Accurate sensitivity analysis of locational marginal price (LMP) is crucial for risk hedging and market management. This paper proposes multiparametric nonlinear programming for sensitivity analysis of LMP with nonlinear network loss, also known as lossy LMP. Global analytical solutions for lossy LMP and the corresponding critical regions are derived. An outer progressive cut algorithm is developed to constrain the network loss error within a specific range for the whole parametric domain. Case studies show the improved accuracy over methods with lossless or fixed loss factors, and a two-order-of-magnitude online speedup over Monte Carlo methods while maintaining lower total computational time.