Physical Sciences and Mathematics Commons^™

Stream Pedagogy Dataset, Martha L. Carlson Mazur

Environmental Studies Faculty Datasets

This is the dataset for Carlson Mazur, Waters, and Combs. (2024). Developing community partnerships to supplement water-quality data in support of urban watershed management.

A Geometric Model For Syzygies Over 2-Calabi–Yau Tilted Algebras Ii, Ralf Schiffler, Khrystyna Serhiyenko

Mathematics Faculty Publications

In this article, we continue the study of a certain family of 2-Calabi–Yau tilted algebras, called dimer tree algebras. The terminology comes from the fact that these algebras can also be realized as quotients of dimer algebras on a disk. They are defined by a quiver with potential whose dual graph is a tree, and they are generally of wild representation type. Given such an algebra B, we construct a polygon S with a checkerboard pattern in its interior, which defines a category Diag(S). The indecomposable objects of Diag(S) are the 2-diagonals in S, and its morphisms are certain pivoting …

Enhancing Cross-Modal Contextual Congruence For Crowdfunding Success Using Knowledge-Infused Learning, Trilok Padhi, Ugur Kursuncu, Yaman Kumar, Valerie L. Shalin, Lane Peterson Fronczek

Psychology Faculty Publications

The digital landscape continually evolves with multimodality, enriching the online experience for users. Creators and marketers aim to weave subtle contextual cues from various modalities into congruent content to engage users with a harmonious message. This interplay of multimodal cues is often a crucial factor in attracting users' attention. However, this richness of multimodality presents a challenge to computational modeling, as the semantic contextual cues spanning across modalities need to be unified to capture the true holistic meaning of the multimodal content. This contextual meaning is critical in attracting user engagement as it conveys the intended message of the brand …

A Review Of Hybrid Cyber Threats Modelling And Detection Using Artificial Intelligence In Iiot, Yifan Liu, Shancang Li, Xinheng Wang, Li Xu

Information Technology & Decision Sciences Faculty Publications

The Industrial Internet of Things (IIoT) has brought numerous benefits, such as improved efficiency, smart analytics, and increased automation. However, it also exposes connected devices, users, applications, and data generated to cyber security threats that need to be addressed. This work investigates hybrid cyber threats (HCTs), which are now working on an entirely new level with the increasingly adopted IIoT. This work focuses on emerging methods to model, detect, and defend against hybrid cyber attacks using machine learning (ML) techniques. Specifically, a novel ML-based HCT modelling and analysis framework was proposed, in which regularisation and Random Forest …

Salamander Modeling: Bridging The Gaps In Environmental Science Accessibility, Grace Leopold

Undergraduate Review

In the realm of science education, ensuring inclusivity and accessibility for all students, especially those with Individualized Education Programs (IEPs), is an imperative goal. IEPs are customized plans designed to support students with diverse learning needs, which can encompass a broad spectrum of disabilities and learning differences (Shaw, 2021). Providing learners with an IEP is an integral part of Special Education, however, there are a host of overarching challenges faced by students with IEPs in science education, especially in environmental science classes. In this thesis, the development and application of clay salamander models are evaluated for their potential to provide …

Exploring Dynamical Systems Over Finite Fields, Juliana Patrone

Undergraduate Review

In this research, we observe the properties of orbits produced from dynamical systems of the form f(x) = xd +c defined over a finite field GF(q). We will investigate how varying the values of d, c, and q = pk affect the cycles created. We will perform numerous experiments and analyze the features of every directed graph created. We will analyze functions whose graphs have the same cyclic structure and when those occur. We will then prove some foundational theorems and special cases that lead up to a generalized theorem. Our specialized cases state that if d = p = …

Inhabiting Numbers: Weaving, Polyphony, And Embodied Mathematics, Kristine Barrett

Textile Society of America: Symposium Proceedings

Inhabiting Numbers: Polyphony as Woven Sound explores connections between vocal polyphony and textile practices, specifically weaving and spinning. Rather than consider music and weaving as separate from one another, the following paper presents the ways in which they are deeply intertwined and mutually constitutive forms of cultural expression. The technical modes of thinking produced through repetition inherent in both—particularly as practices utilizing complex mathematical structures—produce ways of thinking unique to each. Through practice, I suggest these technical modes of making transit across different materials and mediums—in both explicit and implicit ways. The music created through the interweaving of multiple voices …

Dung Dkar Cloak: Exploring Soft Interfaces For Sonic Interactions, Judit Eszter Kárpáti, Esteban De La Torre

Textile Society of America: Symposium Proceedings

The importance of crossmodal interaction within the contemporary cultural, technological and scientific panorama has evidently gained significant attention due to its remarkable advantages in creating a meaningful, interwoven, and integrated experience. The use and recontextualization of textiles in such exploratory quest into the human senses has proven to be critical. Computational science, algorithmic logic and digital devices have always been rooted and closely interwoven with textile crafts and practices. Recent technological advancements have further combined technology and textile, generating interactive textile surfaces, constructing endless possibilities for multisensorial experiences. In this presentation we will examine how we can weave a sensitive …

Perception And Prospects Of Art Of Clothing Maintenance As A Sustainable Fashion, Boiso Maria Owodiong-Idemeko, Adetona Sekinat Ajoke, Udom Owodiong

Textile Society of America: Symposium Proceedings

The study focused on the perception of the art of clothing maintenance and its prospects as a sustainable fashion for consumers in Lagos state. 250 respondents were involved. The study adopted descriptive survey design. Two hypotheses were formulated and a thirty-one (31) item questionnaire was the main instrument used to collect data for the study. The statistical tools used were, percentages, mean and Friedman’s test. The result revealed that, 200 (80%) perceived ripped clothes bring dismay to the wearer, 198 (79%), perceived ripped clothes needed to be reconstructed, 200 (80%) perceived consumers lack practical ability to repair clothes. 241 (96%) …

Speculative Futures With Southern California Fibershed, Lesley Roberts

Textile Society of America: Symposium Proceedings

Regenerative agriculture disruptor Fibershed embraces and gives voice to the fullness of textile paradigms, economies, societies, ecologies, and skill traditions, seeks to address and rectify the sins and the promises of textile making and textile futures, and promotes healthy, holistic wellbeing. Fibershed is a movement of farmers, fashion activists, and makers growing a new textile economy. Founded in 2012 in a bioregion in Northern California, the community has grown to more than 75 chapters worldwide. Fibershed touts a soil-to-soil paradigm that asks us to consider the entire lifecycle of our textiles. It proposes a climate beneficial, regenerative system whose scope …

Wild Silk: Repairing And Healing Our Planet And Social Fabric, Karen Selk

Textile Society of America: Symposium Proceedings

Wild silk, tasar, muga and eri, is much more than miraculous journey of metamorphosis from caterpillar to silken luxury. Caring for wild silkworms in open jungles is nothing like raising white, cultivated silkworms - it is primal - a whole new perspective of the world of silk. The passage from rearing caterpillars to unravelling cocoons making yarn and weaving cloth that possesses the essence of mother nature, is tightly woven to an ancient living culture in remote forests of central and eastern India. It is a celebration of indigenous, Adivasi people ushering their heritage into the contemporary world while preserving …

Environmental Metrics In Action: Exploring U.S. Superfund Sites Affiliated With The Fashion Industry, Nidia K. Trejo

Textile Society of America: Symposium Proceedings

Little is known of Superfund sites, long-term clean up sites, affiliated with the apparel and footwear supply chain in the United States. The United States Environmental Protection Agency (US EPA) manages the clean up of contaminated sites that pose a significant risk to human health and the environment under the Superfund program. A site can become contaminated if hazardous waste from industrial operations are mismanaged or dumped into the environment, in an uncontrolled manner. In this study, a proposed Superfund site (Mohawk Tannery in Nashua, New Hampshire), an active Superfund site (Ciba-Geigy Corp. in Toms River, New Jersery), and a …

Wics Conference 2024: Announcement, Wics Conference

Water and Integrated Cropping Systems Conferences

Announcement for the 2024 Water and Integrated Cropping Systems (WICS) Conference to be held at the University of Nebraska-Lincoln, discussing the theme: Creating Connections Together with the goals of addressing Team Science.

Measuring Resistivity With Low-Cost 3-D Printed Four-Point Probe, Benjamin Siens, Davon Ferrara

Science University Research Symposium (SURS)

Resistivity is an intrinsic property that determines how strongly electrical current is resisted. Measuring the resistivity of materials is vital for many science and engineering fields. This is easily accomplished with a four-point probe. However, commercial probes can be costly. Using 3-D printing and based on the design in Lu et. al (J. Chem. Educ. 2017), a functional four-point probe has been built at a much lower cost in materials. Additionally, the probe design has been simplified for easier construction and better compatibility with Belmont's 3-D printers. Various substrates including ITO glass were tested and the data was compared to …

Russian Sage Decomposition Rates In Sunlit And Shade Environments​, Madison L. Keller, Cameron J. Bateman, Mikayla Collins, Emma Pryor

Science University Research Symposium (SURS)

Many sage species can withstand extreme heat and drought climates making the plant suitable for versatile environments. Because of this, Russian sage leaves tend to decompose slower than other species. The hypothesis of this experiment was that decomposition in an area with higher sunlight would occur at a higher rate compared to the bags placed in the shade. During a twelve-week period, decomposition of Russian sage, Perovskia atriplicifolia, was studied on one of Belmont’s green roofs. The decomposition rate was determined by the use of sixteen leaf litter bags containing dried sage leaves. Eight were positioned in an area of …

Steklov Eigenvalue Problems On Nearly Spherical And Annular Domains, Nathan Philip Schroeder

CGU Theses & Dissertations

We consider Steklov eigenvalues on nearly spherical and nearly annular domains in d dimensions where d is any given positive integer. By using the Green-Beltrami identity for spherical harmonic functions, the derivatives of Steklov eigenvalues with respect to the domain perturbation parameter can be determined by the eigenvalues of a matrix involving the integral of the product of three spherical harmonic functions. By using the addition theorem for spherical harmonic functions, we determine conditions when the trace of this matrix becomes zero. These conditions can then be used to determine when spherical and annular regions are critical points while we …

A Smart Energy-Efficient Hybrid Gait Monitoring System, Elsa Joy Harris

CGU Theses & Dissertations

Triboelectric nanogenerators are devices that harvest mechanical energy from the environment and turn it into electricity. By coupling the effect of contact electrification and electrostatic induction between two materials that come into contact and then separate they can convert the irregular, low frequency, waste biomechanical energy of human motion into useful electrical energy to run small body-worn electronics. This has shown promising results in multiple applications such as self-powered motion and haptic sensing, self-charging micro-storage devices, neuromorphic computing, and designing batteryless circuits to power small wearables. This work will investigate a smart energy-efficient hybrid gait monitoring system that is powered …

Effectiveness Of Municipal Collaboration For Watershed Management In The Southern Colorado River Basin, Sasha Geschwind

CGU Theses & Dissertations

There are mixed arguments about the best scale of government for providing various public goods and services. Specifically, the management of a watershed, which can be categorized as a common pool resource, is generally implemented at the local government scale via National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer Systems (MS4) permits as issued by the United States Environmental Protection Agency (US EPA). A large body of literature argues for rethinking this scale because this does not match natural watershed boundaries.In this paper, I explore the question: Does collaboration, and type of collaboration, among jurisdictions within a watershed …

Es/Ph/Sra 511: Applied Statistics, Minsoo Kang

GMAS Course Syllabi

No abstract provided.

The Law Of The Iterated Logarithm For Lp-Norms Of Kernel Estimators Of Cumulative Distribution Functions, Fuxia Cheng

Faculty Publications – Mathematics

In this paper, we consider the strong convergence of Lp-norms (p ≥ 1) of a kernel estimator of a cumulative distribution function (CDF). Under some mild conditions, the law of the iterated logarithm (LIL) for the Lp-norms of empirical processes is extended to the kernel estimator of the CDF.

Development Of Advanced Instrumentation For High-Enthalpy Flow Characterization For The Onr-Uta Arc-Jet ”Leste” Facility, Ian Raybon

Mechanical and Aerospace Engineering Dissertations - Archive

Sustained hypersonic flight is an exceedingly challenging task comprised of a myriad of complex physical processes. At hypersonic speeds, which is defined by the presence of unique phenomena like high-temperature nonequilibrium flow, viscous and vorticity interactions, and thin shock layers, which are not seen in supersonic, transonic, or subsonic vehicles, the vehicle design is principally driven by the high levels of aerodynamic heating caused by the conversion of kinetic energy to internal energy. Gaining an understanding of how these physical processes interact with each other is required to develop a design methodology for this class of vehicles. Arc-jet wind tunnels …

Nanoscale Studies Of Magnesium Carbonate Precipitation At Ambient Conditions, Ian Shortt

Material Science and Engineering Dissertations - Archive

Currently approximately 8% of global greenhouse gas emissions can be attributed to the construction industry; of these emissions, a little over half of these emissions are due to the production of traditional calcium-based cements. Magnesium carbonate cements present a promising alternative to traditional calcium-based cements, both in terms of emission reductions and in terms of strength. The primary drawback to magnesium carbonate cements is that ambient curing is not yet viable. The objective of this dissertation is to therefore develop greater understanding of the precipitation pathways undertaken by hydrated magnesium carbonates under near-ambient conditions. In the first section of this …

Resource Management And Optimization Of Interactive Microservice And Mpi-Based Ensemble Applications In The Cloud, Md Rajib Hossen

Computer Science and Engineering Dissertations - Archive

As user-interactive applications in the cloud transition from monolithic services to agile microservice architectures, efficient resource management becomes a key challenge. The multitude of loosely coupled components and fluctuating traffic patterns make traditional cloud autoscaling methods ineffective. Existing machine learning-based approaches, while attempting to address this, often require extensive training data and can lead to intentional violations of service level objectives (SLOs). To tackle these challenges, I propose PEMA (Practical Efficient Microservice Autoscaling), a lightweight resource manager for microservices. PEMA aims to optimize resource allocation through opportunistic resource reduction, considering the intricate dependencies between microservices.

On another front, scientific workflows …

Leveraging Software Testing Techniques To Explain, Analyze, And Debug Machine Learning Models, Sunny Shree

Computer Science and Engineering Dissertations - Archive

Machine learning (ML) algorithms are changing many aspects of modern life by analyzing data, identifying patterns, and making predictive decisions across industries such as healthcare, transportation, finance, and e-commerce. However, ML models often operate as "black boxes," making it difficult to interpret their decision-making processes. This lack of transparency creates challenges in testing, debugging, and understanding model behavior, which affects user trust and raises concerns about trustworthiness, accountability, reliability, and fairness in high-stakes applications.

Explainable Artificial Intelligence (XAI) aims to address these challenges by providing tools and methods that explain the decision-making processes of ML models in a way that …

Human System Composite Performance Measures: General Systems Performance Theory Insights, Lawrence Disalvi

Bioengineering Dissertations - Archive

Composite Performance Measures (CPMs) of human performance are widely employed in applications that range from mundane to life-changing, yet they are frequently presented without explanation or reference to theoretical underpinnings. The conceptual soundness of a widely used CPM approach, based on additive combination of constituent components, has been called into question by Kondraske. He argues the relevance of General Systems Performance Theory (GSPT) and performance capacity envelope concepts when applied to multidimensional CPM measures.

To obtain evidence-based answers to assertions regarding CPM types and rationale employed in medical and non-medical contexts, a Systematic Descriptive Review was conducted. Separately, the GSPT-based …

Critical Convergence: Mapping The Boundaries Of How Faculty Interrogate Whiteness In The Geoscience Educational Landscape, James E. Hobbs

Educational Leadership & Policy Studies Dissertations - Archive

This study examined the role of faculty members in interrogating whiteness within geoscience education. The dominant reliance on whiteness as the primary way of knowing in geoscience education has long perpetuated a singular perspective that serves as a mechanism for reinforcing existing power structures rooted in white supremacy. Drawing on tenets from Critical whiteness Studies, Curriculum Theory, and Transformative Learning Theory, this research investigated U.S. higher education faculty members' strategies and challenges in disrupting whiteness within the geoscience curriculum.

Through critical qualitative narrative inquiry, data were collected through semi-structured interviews with geoscience faculty members across multiple institutions across the United …

Point Modules And Line Modules Of Certain Quadratic Quantum Projective Spaces, Jose E. Lozano

Mathematics Dissertations - Archive

During the past 36 years, some research in noncommutative algebra has been driven by attempts to classify AS-regular algebras of global dimension four. Such algebras are often considered to be noncommutative analogues of polynomial rings. In the 1980s, Artin, Tate, and Van den Bergh introduced a projective scheme that parametrizes the point modules over a graded algebra generated by elements of degree one. In 2002, Shelton and Vancliff introduced the concept of line scheme, which is a projective scheme that parametrizes line modules.

This dissertation is in two parts. In the first part, we consider a 1-parameter family of quadratic …

Plant Water Uptake Strategies In An Urban Green Landscape, Erica G. Almance

Earth & Environmental Sciences Theses - Archive

Urban green landscapes have been widely recognized for potentially reducing surface water pollution and flood impacts. However, the understanding of the role that plants play in partitioning the urban water cycle is still limited. We present a study in the Fort Worth Botanic Garden to understand water uptake strategies from three common urban tree species (Elderberry, Sambucus canadensis; Cherry laurel, Prunus caroliniana; and Boxelder maple, Acer negundo) from February 2023 through January 2024. Stem (N=110) isotope ratios (δ18O and δ2H) are compared to multiple endmembers, including precipitation (N=509), throughfall (N=37), and soil water (N=135) at different depths (0- 38 cm). …

Chemoselective Reduction Of Dicarboxylic Acids Via Iridium Catalyzed Hydrosilylation, Linda Lallawmsangi

Chemistry & Biochemistry Theses - Archive

Reduction of esters to aldehydes poses a challenge since the resulting aldehydes are often more reactive than the initial esters toward nucleophilic hydride-reducing agents. Although bulky, more controllable reducing agents such as lithium tri-tert-butoxyaluminum hydride or diisobutylaluminum hydride (DIBAL-H) have been developed, they are hazardous, sensitive to moisture and air, needing strict reaction conditions, and unsuitable with a wide range of functional groups. We present the design of an iridium-catalyzed chemoselective hydrosilylation method for dicarboxylic imides, followed by hydrolysis to eliminate the amide and yield aldehydes. This approach offers versatility in general reduction chemistry, holds promise for application …

A Field-Based Study Of Dust Emissivity In The Northern Chihuahuan Desert, U.S.: Testing The Preferential Dust Source Scheme, Gwenn L Harsha

Dissertations and Theses

We characterized spatiotemporal dust emissivity in the Northern Chihuahuan Desert (New Mexico, Texas, and Arizona, U.S.) using the Portable In-Situ Wind Erosion Lab (PI-SWERL) and measurements of soil crust strength, soil texture and soil moisture. Field-based measurements of emissivity were compared to the results of the Preferential Dust Source (PDS) scheme (Bullard et al., 2011) in the Chihuahuan Desert (Baddock et al., 2011) where 48% of satellite-observed plumes were sourced from ephemeral and dry lakes. Six landforms were tested: 1) ephemeral and 2) dry lake, 3) high and 4) low relief alluvial, and aeolian 5) sand sheet and 6) dunes. …