Digital Commons Network^™

Microbial Hydrocarbon Degradation And Carbon Cycling In Marine And Freshwater Sediments: A Comparative Metagenomic Analysis, Yogita M. Warkhade

Dissertations, Master's Theses and Master's Reports

Microbes are essential in keeping our environment balanced, especially by fixing carbon dioxide and breaking down hydrocarbons in aquatic sediments. This thesis explores how microbial communities perform these tasks in different sediment environments, including marine areas (Caspian Sea and Mediterranean Sea) and freshwater ecosystems (Great Lakes). The first part of this thesis reviews current knowledge about how microbes degrade hydrocarbons. It highlights the importance of different pathways microbes use depending on oxygen availability. The second part provides a detailed study of the microbial communities found in marine sediments from the Caspian Sea and Mediterranean Sea, showing that microbes in these …

Rotten Through The Cores: What Decomposition Can Tell Us About Carbon Cycling, Eileen C. Reeves

Dissertations, Master's Theses and Master's Reports

Sequestration of carbon (C) in forests means that the C is stored in the ecosystem and not emitted to the atmosphere, thus slowing the accumulation of greenhouse gases and mitigating the acceleration of manmade climate change. Quantifying the pools and fluxes of C in forests is therefore of considerable interest to landowners, policy makers, and scientists.

Decomposition is an ecological process central to the movement of C through ecosystems. This dissertation uses several techniques to help determine the factors influencing the speed of decomposition and long-term fate of decomposed plant material. In Chapter Two, phospholipid fatty acid analysis was used …

Dam It All: A Multi-Scalar Investigation Into The Ecological Role And Function Of Beaver Dams, Kenneth Larsen

Dissertations, Master's Theses and Master's Reports

The central theme of this dissertation is ecological scaling, which examines how small, localized features, such as beaver ponds, contribute to large-scale watershed processes and how different modeling approaches at various scales reveal distinct insights. Through a combination of probabilistic modeling and high-resolution empirical research, this work demonstrates that small ponded systems, particularly those created by beavers (Castor canadensis), serve as critical biogeochemical control points, whose contributions to sediment and nutrient dynamics have been historically underestimated.

In Chapter 1, I contextualize this research within the broader fields of freshwater ecology, watershed modeling, and ecological restoration. I introduce the …

Three-Sided Skyline Counting Queries, Suruchi Kushwaha

Dissertations, Master's Theses and Master's Reports

A two-dimensional point p=(p.x,p.y) dominates another point p'=(p'.x,p'.y) if p.x ≥ p'.x and p.y>p'.y or p.x>p'.x and p.y ≥ p'.y. The skyline of a point set P is a subset P' ⊆ P such that every point in P' is not dominated by any other point in P. An orthogonal skyline counting query Q on a set of points P asks for the number of points on the skyline of P ⋂ Q.

In this work we study data structures that support orthogonal skyline counting queries in the special case when the query range is bounded on three …

Examining The Role Of Plant Genome Size And Polyploidy In Shaping Arbuscular Mycorrhizal Fungi Symbioses, Abbigail J. Blackwell

Dissertations, Master's Theses and Master's Reports

Polyploid and larger genome size plants have been shown to contain more cellular nitrogen and phosphorus than related diploid and smaller genome size plants, indicating they have greater nutrient requirements. Given that arbuscular mycorrhizal fungi (AMF) associations can enhance plant nutrient acquisition, polyploid and larger genome size plants may form more associations with AMF to meet their increased nutrient demands and gain greater benefits from these symbioses. However, because AMF associations become unnecessary when nutrient-rich soils meet plant needs independently, these interactions may be more likely to occur under nutrient-poor conditions. For this research, we conducted two experiments to examine …

From Riches To Ruin: An Exploration Of The Conglomerate Mining Company's Compressor House, Jill T. Muraski

Dissertations, Master's Theses and Master's Reports

This archaeological investigation revealed new insights about the story of the Lake District Copper Mining Industry through the Conglomerate Mining Company’s compressor house building. This structure once housed the air compressor powering the mine’s rock drills. Combining archaeological and historical data, this research is one of the first investigations into a compressor house at a mine location. Excavations were undertaken in order to investigate the physical structure and remains of the building. This thesis integrates fieldwork and historical data to understand the changes to the social and working landscape of the Keweenaw, such as the change in ethnic groups, and …

Atomistic Study Of Selenium Doping Effects On The Mechanical Properties Of Zinc-Blende And Wurtzite Cdte Nanowires, Sungwook Leo Hong, Nadeem Azad, Saifuddin Zafar, Abrar Faiyad, Hyung Sub Sim

Mechanical Engineering Faculty Works

CdSexTe1–x semiconductor materials, having potential to be used to design dependable and reproducible nanowire devices, require an extensive study of their mechanical behaviors. The uniaxial tensile deformation mechanism of CdSexTe1–x nanowires (NWs) with different Se dopant concentration are yet to be explored. By integrating theoretical analysis with computational simulation, this research demonstrated that Se doping in CdTe NWs influences the mechanical response and failure modes. Ultimate tensile strength (UTS) and elastic modulus (EM) were studied for both zinc-blende (ZB) and wurtzite (WZ) structures with different crystal orientations. The findings revealed that these mechanical properties increase linearly with increasing Se concentration …

The Role Of Artificial Intelligence In Boosting Cybersecurity And Trusted Embedded Systems Performance: A Systematic Review On Current And Future Trends, Xiangyi Cheng, Ahmed Oun, Kaden Wince

Mechanical Engineering Faculty Works

As technology becomes increasingly interconnected, ensuring the security of cyber and embedded systems is critical due to escalating vulnerabilities and sophisticated cyber threats. Researchers are exploring artificial intelligence (AI) to improve security mechanisms, yet there is a lack of a comprehensive technical, AI-focused analysis detailing the integration of AI into existing security hardware and frameworks. To address this gap, this article systematically reviews 63 articles on AI in cybersecurity and trusted embedded systems. The reviewed articles are categorized into four application domains: 1) Intrusion Detection and Prevention (IDPS), 2) Malware Detection, 3) Industrial Control and Cyber-Physical Systems (CPS) and 4) …

Ultrasound Shear Wave Elastography: Development Of Tissue Models And Investigation Of Shear Wave Variability, Emily J. Miller

Dissertations, Master's Theses and Master's Reports

Ultrasound shear wave elastography (USWE) is an evolving and promising clinical tool for noninvasively measuring in vivo soft tissue biomechanical properties. Assumptions incorporated into the clinical workflow and technical limitations have created gaps between theoretical and clinically derived solutions. The heterogeneity of the fibrotic liver tissue, composition of the background, such as the presence of fatty liver tissue, and the preferred local orientation of the scarred fibrotic liver tissues embedded into the liver parenchyma, may contribute to the uncertainty in USWE measurements. This study aims to systematically investigate four cofounding factors (i.e., size, volume fraction, orientation of the fibrotic inclusions, …

Batteryless Nfc-Enabled Wireless Sensor Node: Design, Optimization, And Implementation, Rishin Patra

Dissertations, Master's Theses and Master's Reports

This thesis presents the design, construction, and testing of a batteryless Near-field communication (NFC) powered wireless sensor node intended for maintenance free, short range Internet of Things (IoT) applications. The work focuses on harvesting energy from a 13.56 MHz NFC field to power a very low-power sensing platform capa- ble of measuring temperature, pressure, and humidity without the use of batteries or wired power. The motivation behind this approach is the growing need for reliable, sustainable, and low-maintenance sensing systems that can operate in environments where battery replacement is impractical, undesirable, or environmentally costly. The prototype is built around a …

Multiscale Computational Chemistry Studies Of The Catalytic Mechanisms Of Non-Heme Fe(Ii)/2-Oxoglutarate-Dependent Oxygenases, Simahudeen Bathir Jaber Sathik Rifayee

Dissertations, Master's Theses and Master's Reports

Enzymes catalyze complex biological transformations. Non-heme Fe(II)/2-oxoglutarate (2OG)–dependent enzymes are highly versatile catalysts capable of selective C–H oxidation, enabling transformations such as hydroxylation, halogenation, desaturation, demethylation, ring rearrangements, epoxidation, and electrophilic aromatic substitution. These enzymes are involved in various biological processes, including fatty acid metabolism, hypoxic signaling, collagen maturation, and transcriptional regulation. Computational Modeling provides detailed knowledge of the enzymes including atomistic details of the important catalytic species, conformational and electronic effects, which are crucial to enzyme engineering and drug design efforts. This dissertation implements advanced multi-scale molecular modelling techniques including Molecular dynamics and Quantum Mechanic / Molecular Mechanics calculations …

Understanding Trends In Zostera Research, Stressors, And Response Variables, Hannah R. Lyford, Emma Guerrini Romano, Shayna A. Sura, Sarah Joy Bittick

Biology Faculty Works

Background. Seagrass meadows are ecologically significant habitats that are globally threatened. Thus, there is increased interest in conservation of seagrasses as they face widespread decline. Biotic and abiotic factors that influence seagrass can be classified as stressors, such as rising temperature and eutrophication. Our study met an imminent need to consolidate data from previous studies to discern knowledge gaps and identify trends in studies, stressors, species, and geographic origination of research for the genus Zostera. For our systematic review, the objectives were to (A) qualitatively assess and summarize the current state of literature focused on seagrass species within the Zostera …

A Comprehensive Embryonic Staging Series Of The Turtle Trachemys Scripta, Christina M. Noravian, Perla G. Rand, Amira Mahomed, Maxellende Ezin, Annie Rickard, Oscar D. Juvera, Maria Elena De Bellard

Biology Faculty Works

Background: Turtles hold a unique place in vertebrate evolutionary history, making them critical assets in embryology research. Yet, they remain understudied as potential model organisms in the field. Here, to support experimental manipulations with turtle embryos, we have created a complete normal table of development for comprehensive embryonic staging of Trachemys scripta, one of the most common invasive turtle species worldwide.

Results: The development of T. scripta embryos from 0 days post-oviposition (DPO) to hatching (~60 DPO) was described from approximately 300 viable eggs collected at California State University, Northridge during the 2021–2024 nesting seasons. Thirty-one stages between oviposition and …

Outside The Walls: Communities Coming Together, Pamela Bucy Pierson, Tobie J. Smith

Articles

No abstract provided.

Nir Spectroscopy As A Tool For Identifying Additives In Foundry Green Sands, Maurice Kuubata

Graduate Research Papers

The main objective of this study is to investigate the potential of Near-Infrared (NIR) spectroscopy as a rapid, non-destructive method for identifying key additives such as seacoal and red iron oxides in foundry green sand. Samples comprised of silica sand with bentonite (DC2), seacoal, and/or red iron oxide were prepared. NIR spectra were acquired using an Avantes spectrometer with an Avasphere attachment. To ensure robust results, high-repeatability data was obtained from twelve replicates of two control mixtures.

Principal Component Analysis (PCA) of the spectral data showed that the first principal component (PC1) explained 99.23 % of total variance for Seacoal …

David M. Beirne

Bryant University Commencement Speakers and Honorary Degree Recipients

Honorary Degree Recipient and Undergraduate Commencement Address speaker.

Computational Analysis And Design Of High-Entropy Nanoparticles: Integrating Atomistic Simulations With Scientific Pedagogy In Materials Research, Sungwook Leo Hong, Priyanshu Luhar, Ricardo Ramirez, Jiwon Lexi Hwang

Mechanical Engineering Faculty Works

This study leverages reactive molecular dynamics simulations to enhance undergraduate education and research in materials science. Focusing on the oxidation processes of a variety of energetic metal nanoparticles, including Al, Cu, Mg, and Ti, two undergraduate students led the scientific inquiry. They conducted literature reviews, ran simulations, validated assumptions, and analyzed results, deepening their understanding of material behaviors and strengthening their STEM identity. Through these hands-on experiences, the students successfully investigated the energetic properties of these nanoparticles, demonstrating the effectiveness of this approach in promoting inquiry-based learning. This work underscores the transformative potential of computational simulations in advancing computational materials …

Confidence In Elections Among U.S. Local Officials: Effects Of Social Trust, Partisanship And Political Ambition, Rebecca Sager, Eric Plutzer, Gary Adler, Jonathan S. Coley, Damon Maryl

Sociology Faculty Works

The U.S. public’s confidence in elections is intensively studied in the last decade but little is known about election confidence among locally elected officials, whose roles and community status may influence public opinion. Using a nationally representative survey of local election officials, we compare election confidence among local elected officials with that of the general public. Local elected officials are more likely to trust both local and national elections. We theorize factors that affect local officials’ trust in elections, including partisan context, state leadership election denial levels, and political ambition. We show how social trust, partisan identity, and ambition significantly …

Magnetization Transfer Ratio In The Typically Developing Pediatric Spinal Cord: Normative Data And Age Correlation, Sara Naghizadeh Kashani, Iswarya Vel, Zahra Sadeghi Adl, Shiva Shahrampour, Devon Middleton, Mahdi Alizadeh, Laura Krisa, Scott Faro, Slimane Tounekti, Julien Cohen-Adad, Feroze Mohamed

Department of Radiology Faculty Papers

BACKGROUND AND PURPOSE: This study presents automated atlas-based magnetization transfer (MT) measurements of the typically developing pediatric cervical spinal cord (SC). We report normative MT ratio (MTR) values from the whole cervical cord white matter (WM) and WM tracts, examining variations with age, sex, height, and weight.

METHODS: MT scans of 33 healthy females (mean age = 12.8) and 22 males (mean age = 13.09) were acquired from the cervical SC (C2-C7) using a 3.0 T MRI. Data were processed using the SC Toolbox, segmented, and registered to the PAM50 template. Affine and non-rigid transformations co-registered the PAM50 WM atlas …

The Contributors, Marites Tiongco

DLSU Business & Economics Review

No abstract provided.

Determinants Of Corporate Capital Structure And The Emerging Role Of Intangibles And Innovation: The Case Of Japanese Corporations, Michael Angelo A. Cortez

DLSU Business & Economics Review

This study aims to modernize capital structure determinants in line with changing economic environments by incorporating the function of intangible assets, particularly innovations, into capital structure decisions. Traditional independent variables such as tangibility, firm size, profitability, growth opportunities, and profitability have been thoroughly researched, but the growing importance of intangible assets and innovations in the contemporary economy with advanced technology calls for a reassessment of their impact on capital structures. I examine 95 enterprises listed in the Nikkei over 11 years (2014–2024) using cross-section generalized least squares regression and dynamic panel data estimation. Results show that corporate leverage decisions (debt-to-equity …

Impact Of International Trade Competitiveness On Unemployment And Poverty Reduction In Ecowas Region, Ikubor Ofili Jude, Yahaya U. Isah, Ojih U. Abraham, Mazeli O. Mark, Abdul Y. Mary

DLSU Business & Economics Review

This study investigates the impact of trade competitiveness on unemployment and poverty in the ECOWAS region. The study relied on POLS, FE, and RE techniques to analyze the impact of export value and trade openness on unemployment and poverty in the ECOWAS region from 2001 to 2020. Annual time series data were sourced from World Bank and World Integrated Trade Solution databases. Major findings from this study show that unemployment responds strongly and favorably to export value and trade openness, whereas poverty responds favorably to trade openness. Further investigation revealed that trade regulatory environment is a determinant of unemployment and …

Assessing The Impact Of Shifting To Non- Combusted Alternatives To Reduce The Economic Cost Of Tobacco-Related Illnesses: A Cost Of Illness Approach In The Philippine Case, Christopher James Cabuay

DLSU Business & Economics Review

Smoking continues to be one of the leading causes of death and disability around the world. Recent health studies, however, have reported that these diseases are more likely to be due to the smoke from burning rather than the actual nicotine content. This study uses a cost-of-illness approach in estimating the cost of smoking-related illness in the Philippines and calculating the potential reduction in costs if a significant portion of the adult smoking population switches to the exclusive use of non-combusted alternatives (NCAs), which drastically reduces the risk of contracting smoking-related diseases. This study finds that cost reductions in the …

Vocational Education And Training (Tvet) And Its Impact On The Employment Prospects Of The Als Graduates, Martha Joy J. Abing, Mitzie Irene P. Conchada

DLSU Business & Economics Review

The pressure for technical-vocational education and training to deliver skilled and competent laborers has become a major concern in the labor market. As such, the strong desire to explore the effectiveness of TVET’s skills training programs remains. There is limited literature on the employability of the alternative learning system graduates in comparison to those graduates of the ALS program who did not pursue TVET. Using the dataset of the World Bank STEP Skills Measurement Household Survey for the Philippines, 2015-2016, this study seeks to determine whether completing TVET has significantly increased the employability of ALS graduates. Utilizing the method of …

A Review Of Climate Change And Its Financial Impact On The Transportation Sector, Ray Anthony L. Almonares

DLSU Business & Economics Review

In this paper, I review the existing literature on climate risks—both transition and physical—and their relationship with firm performance, with a specific focus on transportation finance. I find that the broad literature on carbon emissions and firm performance overlooks two critical characteristics of the global transportation sector: its heavy reliance on fossil fuels and the international scope of its operations. As a result, the conclusions drawn from this body of work may not be directly applicable to global transportation companies. Furthermore, I examine existing studies on extreme sea levels and the global maritime transportation sector, noting that these studies have …

Georgia Southern Magazine, Georgia Southern University

Georgia Southern Magazine

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2025-2026 Georgia Southern University Women's Tennis Roster, Georgia Southern University

Women's Tennis Records

No abstract provided.

2025 Georgia Southern University Women's Soccer Statistics, Georgia Southern University

Women's Soccer Records

No abstract provided.

2025 Georgia Southern University Women's Soccer Media Guide, Georgia Southern University

Women's Soccer Records

No abstract provided.

Examining Our Practice: Engaging In A Faculty Learning Community To Enhance An Online Graduate Program, Regina Rahimi, Lina Soares, Hui Jin

Middle Grades & Secondary Education: Faculty Publications

This research report details a faculty learning community (FLC) developed by three faculty teaching in a graduate program in a mid-size southern university. The purpose of the research was to engage in the study of best practices for online graduate courses by engaging in collaborative discussions on common texts related to improving the teaching and learning experience. Specifically, the faculty engaged in common readings on “small teaching practices” and reflected on the knowledge gleaned and how it related to current online teaching practices (Darby & Lang, 2019; Lang, 2016). The study further explored how an FLC helped higher education instructors …