Digital Commons Network^™

Integrating Fire Responses To Combat Wildfires, Jonathan Leonard Badal

Electrical Engineering

Each year wildfires cause significant loss of property, worsen people’s health, and destroy multiple ecosystems. On average, a wildfire season costs anywhere from 7.6-62.8 billion dollars due to fire containment, repair, and restoration [1]. It can take decades to recover from the crippling loss of land and take even longer to fully restore it. However, with the implementation of a robust early detection system, these losses can be significantly reduced. The current process for identifying wildfires involves visual identification, phone call alerts, and media tools primarily driven by park rangers and public reporting. Unfortunately, this system is not preventative and …

Vicarious Trauma And Doctoral-Level Trainees: Self-Care Practices, Elisabeth B. Gibson

Doctor of Psychology (PsyD)

Research reflects correlations between trauma history and motivation to pursue a career in clinical psychology and mental health professions. Professional longevity is a concern for clinicians in general, especially for clinicians with a trauma history who work with people suffering with trauma conditions. Trauma histories measured by adverse childhood experiences (ACEs), are likely to be present within students of doctor of psychology training programs, and may influence doctoral trainee readiness and ability to engage clients in clinical work. Self-care is thought to not only support overall well-being, but to also mitigate the negative consequences of stress associated with clinical work. …

Resilience, Spirituality And Cultural Connectiveness Within The Native American/American Indian Indigenous Population, Lindsay Price

Doctor of Psychology (PsyD)

Native Americans, also known as the American Indian or Indigenous population, were colonized over four centuries ago by Europeans who brought many diseases which decimated this population. This immense trauma continued for generations as the settlers continued to violate Native American life and identity on every level. Hundreds of indigenous tribes endured massacre, annihilation of traditional culture, forced religious assimilation, stolen land, broken treaties, betrayal of rights, removal of identity, neglect, and constant abuse without any recompense. These violations still widely occur, yet the strength and flourishing of Native Americans remain ever-present. Their deep-rooted protective factors within resilience, like cultural …

Personality And Behavioral Characteristics: A Study Of Court Populations, Markayla Shattuck

Doctor of Psychology (PsyD)

Despite the growing body of research for Fetal Alcohol Spectrum Disorder (FASD) within adults, there remains a lack of research addressing the prevalence of FASD in the legal system. Over the last several decades it has become apparent that alcohol consumption during pregnancy can have devastating long term impacts on the developing fetus including facial abnormalities, cognitive deficits, adverse life outcomes, and behavioral challenges (Brintnell et al., 2019; O’Neil, 2011; Sarman, 2018; Streissguth et al., 2004). Within the legal system, FASD is about 30 times higher than the general population (Lange et al., 2017). Initially, the prevalence of FASD was …

Teaching Programmable Microcontrollers To Novice Users In A College Of Agriculture: Effects On Attitude, Self-Efficacy, And Knowledge, Grant T. Hood

Graduate Theses and Dissertations

This thesis consists of two articles that examined an instructional treatment based on the use of Arduino UNO R3 programmable microcontrollers in a fundamentals of agriculture systems technology course at the University of Arkansas. The first article examined students’ breadboarding and programming self-efficacy and knowledge of Arduino. The treatment consisted of a three-class-period instructional treatment, starting with a pretest before instruction to measure students’ baseline interest, knowledge, and self-efficacy of breadboarding and programming Arduino. This was followed with a short 30-minute instructional video explaining basic Arduino programming and breadboarding. Next a hands-on laboratory activity requiring students to breadboard and program …

Managing Stress Tolerance On Warm-Season Putting Greens In The Transition Zone, Thomas Edward Walton

Graduate Theses and Dissertations

The use of warm-season putting greens in the transition zone has increased in recent years. Ultradwarf bermudagrass (Cynodon dactylon (L.) Pers x C. transvaalensis Burtt-Davy) is the most prevalent warm-season putting green selection in the transition zone, however, newly developed greens-type zoysiagrass (Zoysia spp.) cultivars represent another potential selection for golf courses. The two major limitations of warm-season grasses in the transition zone are a general lack of cold- and shade-tolerance. Protective covers are essential to protect ultradwarf bermudagrass putting greens in the winter months. Unfortunately, golf courses can still experience winterkill underneath protective covers. Two field trials were conducted …

Imagining Communicative Success: How Imagined Interactions Affect Conflict Management In Romantic Relationships, Melinda Shaw

Graduate Theses and Dissertations

Currently, there are no bodies of research that examine the relationship between imagined interactions, relational maintenance, conflict management, and gender identity. Previous research has primarily relied on quantitatively measuring the functionality of imagined interactions and generating an understanding as to why individuals use them. However, this study qualitatively examined the connection between these concepts, specifically how gender identity affects how individuals use imagined interactions to manage conflict with their partner and maintain their relationship. Fifteen participants who are currently in long-term relationships were interviewed and then required to complete the Thomas-Kilmann (1974) conflict management mode survey. Afterward, the responses were …

Supervised Representation Learning For Improving Prediction Performance In Medical Decision Support Applications, Phawis Thammasorn

Graduate Theses and Dissertations

Machine learning approaches for prediction play an integral role in modern-day decision supports system. An integral part of the process is extracting interest variables or features to describe the input data. Then, the variables are utilized for training machine-learning algorithms to map from the variables to the target output. After the training, the model is validated with either validation or testing data before making predictions with a new dataset. Despite the straightforward workflow, the process relies heavily on good feature representation of data. Engineering suitable representation eases the subsequent actions and copes with many practical issues that potentially prevent the …

Predicting The Likelihood And Scale Of Wildfires In California Using Meteorological And Vegetation Data, Matthew Walters

Graduate Theses and Dissertations

Wildfires have devastating ecological, environmental, economical, and public health impacts through the deterioration of water and air quality, CO2 emissions, property damage, and lung illnesses. The early detection and prevention of wildfires allow for the minimization of these risks. The use of Artificial Intelligence (AI) in wildfire detection and prediction has been highly researched as a tool to assist firefighters in stopping wildfires in its early stages. The three common wildfire prediction categories include image and video detection, behavior prediction, and susceptibility prediction. Data such as climate, weather, vegetation, satellite images, and historical wildfire data is most commonly used. Many …

Naphthalene And Anthracene Degrading Potentials Of Bacteria Isolated From Soil Samples With Evidence Of Polycyclic Aromatic Hydrocarbon(Pah) Contamination, Olatunde Clement Akinola

Theses (2016-Present)

Polycyclic Aromatic Hydrocarbon (PAH) from crude oil and other sources is one of the most serious environmental problems. PAH has an adverse effect on human health, water bodies and agricultural products. Removal of PAH through the physical and chemical methods are expensive and not environmentally friendly. Bioremediation, which is the use of microorganisms to degrade environmental pollutants like naphthalene and anthracene and render them less toxic, provides a cheaper and safer method. The objective of this research is to study the naphthalene and anthracene degrading potentials of bacteria isolated from soil samples with evidence of cude oil contamination. Another objective …

Analyzing Breastfeeding On Social Media, Kerri Barnes

Theses (2016-Present)

The study uses the feminist theory to discourse issues surrounding breastfeeding as articulated on Twitter. The research employed a mixed methodology approach in executing its goal. The study will begin by examining and presenting findings on a Twitter hashtag, #breastfeeding, a popular hashtag that mothers and experts use to articulate breastfeeding issues. The extensive examination of breastfeeding beyond its linguistic form was undertaken in this study based on the feminist guidelines considering bodies that protect mothers' welfare were integrated into the study. The study findings from the tweets analyzed, N= 2,818, indicate and confirm that breastfeeding is the mode of …

Identifying Genetic Differences Among African American And Caucasian Triple Negative Breast Cancer Genotypes, Christopher Jordan Dixon

Theses (2016-Present)

Triple negative breast cancers (TNBC) are closely related to basal-like cancers and classified based on their molecular signatures and their progenitor cell type. TNBCs lack the presence of three common types of receptors known to fuel breast cancer growth: estrogen receptors (ER), progesterone receptors (PR), and human epidermal growth factor receptors 2 (HER2neu). TNBC represent 10-20% of all molecular breast cancer subtypes. Even though genomic and transcriptome analyses show that many of the molecular signatures associated with TNBC are not related to ethnicity, clinicians and researchers find that African American (AA) TNBC women have higher mortality rates compared to Caucasian …

Characterization Of The Cell Cycle Dependent Kinase Inhibitor P27kip1 In The Stem-Like Properties Of Breast Cancer Stem Cells, Jaz-Mine Mccovins

Theses (2016-Present)

Breast cancer is the second leading cause of cancer death among American women. Traditional therapies, such as chemotherapy and radiation therapy, target proliferative cells within the tumor bulk. However, these treatments do not provide long-term disease survival because they fail to eliminate a small population of long-lived tumor initiating cells known as breast cancer stem cells (CSCs). Two features of CSCs are that they slowly divide and are more resistant to conventional anti-cancer treatments due to altered cellular machinery. It is the breast CSC subpopulation that develops new tumors which have the potential to lead to recurrence. However, the mechanism …

Analysis Of Polychlorinated Biphenyls In Electric Transformer Oil Using Gas Chromatography With Electron Capture Detector., Vivek Mann

Theses (2016-Present)

Polychlorinated biphenyls (PCB’s) are a group of synthetic chemicals which are environmentally insistent that were once used as coolants and lubricants in paints, heat transfer fluids, transformers, capacitors, caulking materials and other electrical materials owning to their property of good insulators. PCBs are persistent organic pollutants since they are persistent, resistant to biodegradation, bioaccumulate and have shown to cause a variety of deleterious effects on human health and the environment. Due to this the manufacturing of PCBs was banned in the United States in 1977. Although, production of PCBs has reportedly stopped, the potential or actual release of PCBs into …

Multi Elemental Analysis Of Cannabis Oil Based Products Using Icpms And Microwave Assisted Digestion., Kevin Trevon Marchbanks-Owens

Theses (2016-Present)

Due to the presence of CBD-(cannabidiol), bioavailable elements as well as industry versatility and relatively low levels of toxicity to the environment. CBD oils have driven the overall demand for Cannabis based plant products in the commercial and medical sector. However, dependent upon the environmental circumstances upon which these plants are grown can leave them susceptible to toxic heavy metal exposure. In fact, the natural metabolism of Cannabis plants makes them a hyperaccumulator of trace metals. This creates a severe health risk for CBD product consumers especially for more vulnerable populations with pre-existing conditions. Furthermore, the risk of heavy metal …

Airway Management And The Hypoglossal Nerve Stimulator For Obstructive Sleep Apnea Patients, Chandler Barnes

Nurse Anesthesia MSNA Student Capstones

The pathophysiology of obstructive sleep apnea (OSA) relates to anatomical and non-anatomical factors. Anatomical considerations correlate to narrowing of the pharynx. When present, non-anatomical factors can intensify the severity of OSA and ease of collapsibility of upper airway tissue. The negative consequences of untreated OSA are well-defined and many treatment options are available. The novel hypoglossal nerve stimulator makes for a viable treatment option in patients who do not tolerate more traditional therapy, such as continuous positive airway pressure (CPAP), and meets eligibility requirements of device implantation as outlined by the Food and Drug Administration (FDA). The Inspire® Hypoglossal Nerve …

Low-Metallicity Globular Clusters In The Low-Mass Isolated Spiral Galaxy Ngc 2403, Duncan A. Forbes, Anna Ferré-Mateu, Jonah S. Gannon, Aaron J. Romanowsky, Jeffrey L. Carlin, Jean P. Brodie, Jacob Day

Faculty Research, Scholarly, and Creative Activity

The globular cluster (GC) systems of low-mass late-type galaxies, such as NGC 2403, have been poorly studied to date. As a low mass galaxy (M∗ = 7 × 109 Mz.ast;), cosmological simulations predict NGC 2403 to contain few, if any, accreted GCs. It is also isolated, with a remarkably undisturbed HI disc. Based on candidates from the literature, Sloan Digital Sky Survey and Hyper Suprime-Cam imaging, we selected several GCs for follow-up spectroscopy using the Keck Cosmic Web Imager. From their radial velocities and other properties, we identify eight bona-fide GCs associated with either the inner halo or the disc …

A New Rock Hardness Classification System Based On Portable Dynamic Testing, Sasan Ghorbani, Seyed Hadi Hoseinie, Ebrahim Ghasemi, Taghi Sherizadeh, Christina Wanhainen

Mining Engineering Faculty Research & Creative Works

Hardness is one of the critical physical characteristics of minerals and rocks, which indicates the resistance of the rock to penetration, scratch, or permanent deformation. As a basic concept, rock hardness has a significant role in rock mechanics and geological engineering and is an appropriate diagnostic tool for the classification of minerals and rocks. The main purpose of this study is to guide rock engineers to measure the rock hardness faster, easier, and more accurately using Leeb's dynamic hardness test. Accordingly, this paper presents a new rock hardness classification system based on the Leeb dynamic and portable hardness testing method. …

Edge Chipping Of Translucent Zirconia, Joseph D. Flask, Geoffrey A. Thompson, Maharaj Singh, David W. Berzins

School of Dentistry Faculty Research and Publications

Statement of problem

More translucent dental zirconias have been developed by incorporating the cubic phase and reducing the tetragonal phase content that undergoes transformation toughening, leading to reduced mechanical properties. Whether the clinically relevant mechanical property of the edge chipping toughness of the material is also reduced is unclear.

Purpose

The purpose of this in vitro study was to evaluate the edge chipping toughness and translucency of translucent zirconia, 3mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), and lithium disilicate.

Material and methods

Two translucent zirconia products, Katana and Lava Esthetic; one 3Y-TZP, Lava Plus; and one lithium disilicate, IPS e.max Press …

A Priori And A Posteriori Error Estimates For The Quad-Curl Eigenvalue Problem, Lixiu Wang, Qian Zhang, Jiguang Sun, Zhimin Zhang

Michigan Tech Publications, Part 1

In this paper, we consider a priori and a posteriori error estimates of the H(curl2)-conforming finite element when solving the quad-curl eigenvalue problem. An a priori estimate of eigenvalues with convergence order 2(s 1) is obtained if the corresponding eigenvector u a Hs 1(Ω) and-u a Hs(Ω). For the a posteriori estimate, by analyzing the associated source problem, we obtain lower and upper bounds for the errors of eigenvectors in the energy norm and upper bounds for the errors of eigenvalues. Numerical examples are presented for validation.

Large-Eddy Simulations Of A Convection Cloud Chamber: Sensitivity To Bin Microphysics And Advection, Fan Yang, Mikhail Ovchinnikov, Subin Thomas, Alexander Khain, Robert Mcgraw, Raymond Shaw, Andrew M. Vogelmann

Michigan Tech Publications, Part 1

Bin microphysics schemes are useful tools for cloud simulations and are often considered to provide a benchmark for model intercomparison. However, they may experience issues with numerical diffusion, which are not well quantified, and the transport of hydrometeors depends on the choice of advection scheme, which can also change cloud simulation results. Here, an atmospheric large-eddy simulation model is adapted to simulate a statistically steady-state cloud in a convection cloud chamber under well-constrained conditions. Two bin microphysics schemes, a spectral bin method and the method of moments, as well as several advection methods for the transport of the microphysical variables …

Understanding Public Emergency Preparedness Before And During The Coronavirus Outbreak: Implications For Effective Public Health And Risk Communication., Raphael Adjetey Fumey

Electronic Theses and Dissertations

The COVID-19 pandemic has resulted in a dramatic loss of human lives globally and presents an unprecedented challenge to public health, the world of work, and our food systems. The social and economic disruption caused by the COVID-19 pandemic is devastating, putting several millions of people at risk of falling into extreme poverty, with over 500 million people being undernourished. It is evident from the data on COVID-19 cases, deaths, and hospitalizations that the United States is the worse hit country, which can be attributed to the lack of preparedness at the individual, environmental, and government levels. This study applied …

Engineering Lewis Acidic Materials For Biomass Conversion And Battery Applications., Md Anwar Hossain

Electronic Theses and Dissertations

My long-term goal is to develop catalytic systems to produce renewable energy for a sustainable society. The overall research objective of my dissertation is to advance understanding of Lewis acidic materials for (1) conversion of renewable lignin into phenolics and (2) enhanced cycling stability of lithium metal batteries to safely store renewable electricity from wind and solar, thereby laying the groundwork for our transition to a sustainable society. Petroleum is a conventional feedstock for current transportation fuels (gasoline, diesel, and jet fuels). However, petroleum is a finite resource and produces greenhouse gases (CO₂ and CH₄) upon processing, …

Person-Centered Decision-Making And Socio-Cultural Contexts Influencing Cesarean Deliveries: A National Analysis., Alice M. Story

Electronic Theses and Dissertations

The cesarean delivery rate has increased and accounts for a third of pregnancies in the U.S., especially among marginalized women. This study applied a newly developed conceptual model to identify potential areas of influence that could reduce rates of cesarean deliveries. The Giving Voice to Mothers - United States data was used for analyses to predict covariates associated with having a cesarean delivery vs. spontaneous vaginal delivery (n=1,876). Significant covariates were determined and included the following: having a prior cesarean delivery (OR: 14.11, 95% CI: 7.99 - 24.90); more than one child (OR: 0.21, 95% CI: 0.13 - 0.35); elevated …

Structural, Charge Transport, Gas Sensing, Magnetic, Pseudocapacitive, And Electrocatalytic Properties Of Perovskite Oxides., Surendra Bahadur Karki

Electronic Theses and Dissertations

Perovskites are functional materials with the general formula ABO₃ (A = alkali, alkaline earth or lanthanoid cations and B = transition metal or main group cations). These materials are marked by a variety of crystal structures and interesting properties such as colossal magnetoresistance, ferroelectricity, multiferroicity, superconductivity, pseudocapacitance, gas sensing, charge transport, and electrocatalytic properties. The formula of perovskite can be written as AA’BB’O₆, when there is ordering between two cations over A and B-sites. Such compounds are called double perovskite oxides. Some amount of oxygen could be lost from crystal structure without decomposition of the phase. Such …

Findings And Understandings Of 'Home': An Ethnographic Study Of How Homeless People And Displaced Persons Negotiate The Word 'Home'., Abby F Perez

Electronic Theses and Dissertations

This dissertation is an ethnographic study of various meanings of the word ‘home’ and how the word ‘home’ is used by homeless, evicted, and displaced persons, and by the researcher of the study, to negotiate boundaries and relations of power to achieve goals, both moral and material.Scholarly research on home in urban studies and sociology has produced many definitions and meanings of the word ‘home’ and concepts of home, but often neglects to consider the way the word itself is experienced, personally, by individuals and how to make sense of the way these personal experiences relate to official meanings of …

"We Will Work A Lot And You Are So Loved": Teacher Perspectives On Building Positive Relationships With Students., Geena Constantin

Electronic Theses and Dissertations

This multiple case study using the Interpretive Phenomenological Analysis (IPA) approach (Alase, 2017) supported a need to understand the specific realities of student-teacher relationship-building. This investigation allowed a deeper look into four teachers’ perceptions of what it means to build positive relationships with students. This research study added to the literature demonstrating the importance of building strong positive relationships with students built on demonstrations of high expectations and care and driven by mutual understandings and celebration of diverse cultures and identities. Supporting this small group of teachers in investigating their personal beliefs about relationship-building was a step forward in defining …

Protest-Related Tear Gas Exposure And Menstrual Function, Emily Kathleen (Steinmetz) Reece

Electronic Theses and Dissertations

During the racial justice protests of 2020 and 2021, crowd control chemical irritants (referred to as “tear gas”) were deployed against protesters, after which there were anecdotal reports of altered menstrual cycles among exposed individuals. There is only one peer reviewed published study on tear gas exposure and menstrual health. This study examined whether tear gas exposure was associated with menstrual cycle outcomes among women attending the 2020-2021 protests. Data from 103 women who attended racial justice protests in 2020 and 2021 were collected through an online questionnaire. Data included protest attendance, acute symptoms of tear gas exposure, whether medical …

In‐Plane Si Microneedles: Fabrication, Characterization, Modeling And Applications, Abdulla Al Mamun, Feng Zhao

Electrical and Computer Engineering Faculty Research & Creative Works

Microneedles are getting more and more attention in research and commercialization since their advancement in the 1990s due to the advantages over traditional hypodermic needles such as minimum invasiveness, low material and fabrication cost, and precise needle geometry control, etc. The design and fabrication of microneedles depend on various factors such as the type of materials used, fabrication planes and techniques, needle structures, etc. In the past years, in‐plane and out‐of‐plane microneedle technologies made by silicon (Si), polymer, metal, and other materials have been developed for numerous biomedical applications including drug delivery, sample collections, medical diagnostics, and bio‐sensing. Among these …

Sl-Cyclegan: Blind Motion Deblurring In Cycles Using Sparse Learning, Ali Syed Saqlain, Li-Yun Wang, Zhiyong Liu

Computer Science Faculty Publications and Presentations

In this paper, we introduce an end-to-end generative adversarial network (GAN) based on sparse learning for single image motion deblurring, which we called SL-CycleGAN. For the first time in image motion deblurring, we propose a sparse ResNet-block as a combination of sparse convolution layers and a trainable spatial pooler k-winner based on HTM (Hierarchical Temporal Memory) to replace non-linearity such as ReLU in the ResNet-block of SL-CycleGAN generators. Furthermore, we take our inspiration from the domain-to-domain translation ability of the CycleGAN, and we show that image deblurring can be cycle-consistent while achieving the best qualitative results. Finally, we perform extensive …