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Controlled Manipulation And Transport By Microswimmers In Stokes Flows, Jake Buzhardt

All Dissertations

Remotely actuated microscale swimming robots have the potential to revolutionize many aspects of biomedicine. However, for the longterm goals of this field of research to be achievable, it is necessary to develop modelling, simulation, and control strategies which effectively and efficiently account for not only the motion of individual swimmers, but also the complex interactions of such swimmers with their environment including other nearby swimmers, boundaries, other cargo and passive particles, and the fluid medium itself. The aim of this thesis is to study these problems in simulation from the perspective of controls and dynamical systems, with a particular focus …

Design Guidelines For Homeless Shelter And Resource Center Site Plans, Samuel Johnson

All Graduate Reports and Creative Projects, Fall 2023 to Present

Homelessness is one of the most pressing humanitarian issues facing the country today. Lack of affordable housing, among many other complicating factors, have led to many cities scrambling to find both short-, middle-, and long-term solutions to the issue. The Covid-19 pandemic added a disruption in services, critical record-keeping, and data-gathering, which has further confounded experts looking for an effective path forward. As it stands, there is a significant gap in academic research addressing best practices for shelter site design, particularly as it relates to landscape. The role of landscape and greenspace within and around a shelter is not well …

Impacts Of Disturbance And Nutrient Addition On Coastal Dune Arthropod Communities, Kayla Beitzel

Honors Theses

Coastal dune ecosystems are globally distributed ecosystems that occur from the tropics to the poles and serve as the first line of defense during storms. They are critical habitats for a variety of organisms and also play a critical role in stabilizing coastal habitats. These systems face increased pressure via urban development, recreational expansion, and sea-level rise (Newman et al. 2023; Webster et al. 2005). Insects are vital consumers in coastal ecosystems and act as regulators of plant growth. Low-diversity ecosystems, like coastal dune systems, often contain a higher abundance of low-diverse insect consumers (Ripple et al. 2021), which can …

A Framework Of Flow Models For The Development And Testing Of Cardiovascular Devices, Megan Laughlin

Graduate Theses and Dissertations

Cardiovascular disease (CVD) is the leading cause of death worldwide and its treatment continues to improve due to the advancement of innovative cardiovascular medical devices. In vitro and in silico models serve to replicate the in vivo environment for the development and testing of these devices prior to using animals for testing, and eventually humans in clinical trials. However, limitations related to these models exist in multiple areas including general, cardiac, and venous applications. Specifically, current gaps have been identified with customizable, tissue-mimicking phantoms (general), 2D Blood Speckle Imaging (BSI) (cardiac) and a bioprosthetic venous valve (venous). This dissertation focuses …

How Sewage Pollution Affects Distribution And Life History Traits Of The Southern House Mosquito, Culex Quinquefasciatus, Catherine Dean Bermond

Master's Theses

Eutrophication from wastewater can cause fluxes of nutrients like and carbon and nitrogen in urban waters. One source of nitrogen in freshwater is from untreated sewage discharging from septic tanks. This causes a variety of environmental issues including harmful algal blooms, harming natural predators, and increased production of mosquitoes. Culex quinquefasciatus is the vector of West Nile Virus in St. Tammany Parish, Louisiana. St. Tammany Parish has over 600 miles of septic ditches, which receive effluent directly from aerated treatment units. Culex quinquefasciatus oviposit in polluted waters, and larvae perform well in water with high levels of decomposing organic matter. …

Estimation Of Angular Response Curves Using A Phase Differencing Bathymetric Sonar, Kandice Gunning

Master's Theses

Although Multibeam Echosounders (MBES) backscatter products like Angular Response Curves (ARC) and mosaics have been used and applied to different sediment types as classification tools, little is known about the extraction and interpretation of ARCs using Phase Differencing Bathymetric Sonar Systems (PDBS). This thesis aims to use an across-track approach to develop a method for extracting ARCs from georeferenced bathymetric data using PDBS.

Three different data collection surveys were conducted using a PDBS operating at 540kHz. Using only the bathymetric data, initial ARCs from 3 different intensity classes (high, medium, and low) were successfully extracted, the results of which attempted …

The Examination Of A Teacher Mentorship Intervention On Junior Teachers' Stress And Self-Efficacy, Cagla Cobek

Master's Theses

This study examined a daily Check-In/Check-Out mentorship intervention for junior teachers. Changes in junior teachers’ stress level and their sense of self-efficacy were measured. Researchers collected data from three junior teachers and mentor dyads in a Southeastern school district. A Multiple Baseline Design across three teachers was used in this study to examine the impact of the daily mentorship intervention. The results suggested that daily Check-Ins and Check-Outs with mentor teachers decreased all three junior teachers’ daily stress. The intervention did not impact significantly on junior teachers’ perceived stress and their sense of self-efficacy. Overall, this study supports a promising …

Understanding The Kinetics Of Laser-Induced Nanowelding Of Nanoparticles And The Motility Of Bacteria When Faced With Obstacles, Ariel Rogers

Graduate Theses and Dissertations

This dissertation has two focus areas: nanoparticle nanowelding and bacteria motility in the presence of micrometer sized structures. There are two main projects for the nanoparticle nanowelding studies: “Real-time imaging of laser-induced nanowelding in solution” and “Two-color laser-induced nanostructure shape modulation.” For the real-time imaging project, I used a fluorescence microscope, a 405 nm laser, and various python packages to quantify the average size of nanowelded nanostructures as a function of time and found that the average nanostructure growth over time fit the parameters of A¯(t) ∝ c0(1−e−t/τ), where c0 represents the initial concentration of nanoparticles in the solution and …

Exploring The Interrelationships Among Structural Complexity, Multi-Trophic Biodiversity, And Ecosystem Productivity In Forested Ecosystems., Ayanna St. Rose

Graduate Theses and Dissertations

Forests play a pivotal role in sustaining global biodiversity and mitigating the global climate, as they serve as the primary refuge for terrestrial biodiversity and effectively capture and store atmospheric carbon dioxide. However, changing climate and land use are altering the geographic distribution, physical structure, and productivity of forested ecosystems that can have profound impacts on biodiversity conservation, forest productivity, and global climate. This dissertation contributes to our understanding of multifaceted interactions between the physical and biological structural complexity and ecosystem functions in forested landscapes across the United states by using openly available data from two national networks: the National …

Bayesian Learning Of Spatiotemporal Source Distribution For Beached Microplastic In The Gulf Of Mexico, David Pojunas

Graduate Theses and Dissertations

Over the last several decades, plastic waste has gradually accumulated while slowly degrading in terrestrial and oceanic environments. Recently, there has been an increased effort to identify the possible sources of plastic to understand how they affect vulnerable beaches. This issue is of particular concern in the Gulf of Mexico due to the presence of oil, natural gas, and plastic production. In this thesis, we expand upon existing Bayesian plastic attribution models and develop a rigorous statistical framework to map observed beached microplastics to their sources. Within this framework, we combine Lagrangian backtracking simulations of floating particles using nurdle beaching …

Tissue-Engineered Models For Investigating Nerve Infiltration In Fibrotic Microenvironments, Nikolas Ala-Kokko

Graduate Theses and Dissertations

Neuron infiltration is involved in a multitude of diseased states and is critical in the regeneration of physiologic conditions. Modeling of innervation in three-dimensional, heterogenous, environments would allow early investigation in the crosstalk of neurons and native cells in normal and pathophysiologic microenvironments to gain an understanding of mechanistic functions. This would allow for greater insight into the role of metabolism, cell adhesion, microenvironmental alternations, cellular crosstalk, and signaling pathways that play a role in the promotion and prevention of neurite growth. In this thesis, with the construction of collagen-based hydrogels as the foundation for cell culture, we investigate cell …

Health Beneficial Effects Of Black Raspberry, Blueberry, And Blackberry Volatile Extracts In Lung And Colon, Inah Gu

Graduate Theses and Dissertations

Berries are one of the most consumed fruits in our diet, and rich in dietary fiber, vitamins, minerals, polyphenols, and volatiles. Volatiles are responsible for the aroma of berries, and are widely used in food, perfumery, and cosmetic industries. However, the potential health beneficial effects of berry volatiles have not been extensively studied. Recently, we found that berry volatiles from cranberries, black and red raspberries, strawberries, blueberries, and blackberries have an anti-inflammatory effect on inflamed murine macrophage cells. Since inflammation can develop into many chronic diseases, and berry volatiles can be inhaled or consumed and pass through the lungs or …

Human Parechovirus Central Nervous System Infection In A Young Infant Cohort, Aspasia Katragkou, Avni Sheth, Christina Gagliardo, Jessica Aquino, Niva Shah, Eberechi Nwaobasi-Iwuh, Christina Melchionne, Paige Black, Stephanie Chiu, Cecilia Di Pentima

Department of Pediatrics Faculty Papers

In 2022, a surge in cases of pediatric human parechovirus (HPeV) central nervous system infections in young infants was seen at our institution. Despite the dramatic increase in the number of cases seen that year, the clinical features of the illness were similar to prior years. The recent pediatric HPeV surge highlights the need to evaluate treatment options and standardize follow-up to better understand the long-term prognosis of infants with HPeV infection.

The Tidal Prism, Viable Eelgrass Habitat, And The Effects Of Sea Level Rise In Morro Bay, Kaden A. Caliendo

Master's Theses

The tidal prism, or the volume of water exchanged from the sea to an estuary from mean low to mean high tide, influences system hydrodynamics and ecological functioning. Since 1884, the tidal prism in Morro Bay, California has been estimated to be decreasing over time due to sedimentation from upstream practices. What is the current tidal prism in Morro Bay and how will that change with sea level rise? How will eelgrass respond to rising sea levels?

For this study, inexpensive tidal gauges were deployed at four locations in Morro Bay from March to August 2023 to measure spatially varying …

About Semi-Parametric Methodology For Fuzzy Quantile Regression Model Estimation: A Review, Elaf Baha Alwan, Omar Abdulmohsin Ali

Journal of Economics and Administrative Sciences

In this paper, previous studies about Fuzzy regression had been presented. The fuzzy regression is a generalization of the traditional regression model that formulates a fuzzy environment's relationship to independent and dependent variables. All this can be introduced by non-parametric model, as well as a semi-parametric model. Moreover, results obtained from the previous studies and their conclusions were put forward in this context. So, we suggest a novel method of estimation via new weights instead of the old weights and introduce another suggestion based on artificial neural networks.

Evaluating Habitat Use By Nekton In Widgeon Grass (Ruppia Maritima), Shoal Grass (Halodule Wrightii), And Unvegetated Bottom Habitats In The Grand Bay National Estuarine Research Reserve, Jessica Woodall

Master's Theses

Seagrass beds support high biodiversity and animal abundance, serve as feeding grounds for a variety of animals, offer shelter from predation, and act as a nursery habitat for juveniles. The species composition of seagrass beds can impact their use as habitat by animals. Two common species of seagrass in the Gulf of Mexico are Ruppia maritima (widgeon grass) and Halodule wrightii (shoal grass). The shallow coastal waters of the Grand Bay National Estuarine Research Reserve (NERR) support both species, but the use of each seagrass as habitat by nekton is poorly understood, which can limit management decision-making. Nekton communities were …

Exploring Midwives' Challenges And Strategies To Provide Care In Maternity Settings During Harsh Winter Weather In Northern Areas, Pakistan: A Qualitative Study Protocol, Sana Sultan, Rafat Jan, Marina Baig

Journal of Asian Midwives (JAM)

Background: Midwives play a vital role in enhancing the quality of care and achieving substantial reductions in maternal and newborn mortality rates. However, in the context of Gilgit Baltistan, the harsh winter weather, and frequent heavy snowfall present distinct challenges for midwives providing essential maternal care. These challenges can lead to an increased risk of maternal infections and newborn hypothermia. Consequently, the limited accessibility to healthcare facilities due to frequent harsh winter weather, and resulting scarcity of resources like heating, electricity, and water further exacerbates the situation.
Objective: The objective of the study is to explore the challenges and barriers …

Deficiency Of Acute-Phase Serum Amyloid A Exacerbates Sepsis-Induced Mortality And Lung Injury In Mice, Ailing Ji, Andrea C. Trumbauer, Victoria P. Noffsinger, Luke W. Meredith, Brittany Dong, Qian Wang, Ling Guo, Xiangan Li, Frederick C. De Beer, Nancy R. Webb, Lisa R. Tannock, Marlene E. Starr, Christopher M. Waters, Preetha Shridas

Saha Cardiovascular Research Center Faculty Publications

Serum amyloid A (SAA) is a family of proteins, the plasma levels of which may increase >1000-fold in acute inflammatory states. We investigated the role of SAA in sepsis using mice deficient in all three acute-phase SAA isoforms (SAA-TKO). SAA deficiency significantly increased mortality rates in the three experimental sepsis mouse models: cecal ligation and puncture (CLP), cecal slurry (CS) injection, and lipopolysaccharide (LPS) treatments. SAA-TKO mice had exacerbated lung pathology compared to wild-type (WT) mice after CLP. A bulk RNA sequencing performed on lung tissues excised 24 h after CLP indicated significant enrichment in the expression of genes associated …

Loss Of Carnitine Palmitoyltransferase 1a Reduces Docosahexaenoic Acid-Containing Phospholipids And Drives Sexually Dimorphic Liver Disease In Mice, Mikala M. Zelows, Corissa Cady, Nikitha Dharanipragada, Anna E. Mead, Zachary A. Kipp, Evelyn A. Bates, Venkateshwari Varadharajan, Rakhee Banerjee, Se-Hyung Park, Nathan R. Shelman, Harrison A. Clarke, Tara R. Hawkinson, Terrymar Medina, Ramon C. Sun, Todd A. Lydic, Terry D. Hinds, Jr., J. Mark Brown, Samir Softic, Gregory A. Graf, Robert N. Helsley

Saha Cardiovascular Research Center Faculty Publications

Background and aims: Genome and epigenome wide association studies identified variants in carnitine palmitoyltransferase 1a (CPT1a) that associate with lipid traits. The goal of this study was to determine the role of liver-specific CPT1a on hepatic lipid metabolism.

Approach and results: Male and female liver-specific knockout (LKO) and littermate controls were placed on a low-fat or high-fat diet (60% kcal fat) for 15 weeks. Mice were necropsied after a 16 h fast, and tissues were collected for lipidomics, matrix-assisted laser desorption ionization mass spectrometry imaging, kinome analysis, RNA-sequencing, and protein expression by immunoblotting. Female LKO mice had increased serum alanine …

A Descriptive Analysis Of Gastric Cancer With An Immunohistochemical Study Of Ki67 And P53 As Prognostic Factors.: Bahrain Experience, Mohmmed Awadh, Aysha Darwish, Huda Alqatari, Fatema M. Buzaid, Abdulla Darwish

Saudi Medical Journal

Objectives: To describe the increasing number of gastric cancer cases at Bahrain Defense Force Hospital with implementation of immunohistochemistry markers as prognostic factors. Methods: This study included histologically confirmed malignant gastric tumors diagnosed at Bahrain Defense Force Hospital from January 2009 to June 2019. Various epidemiological and pathological data were abstracted and recorded with immunohistochemical analysis of the proliferation marker Ki67 and cell-cycle regulator p53 as prognostic factors. Results: A total of 53 patients with gastric cancer were included in the study, with mean age of 59.75 ± 12.9 years. The typical histological types were signet ring cell adenocarcinoma (68%) …

An Exploration Into Health Equity Discourse In Mississippi: Organizational Commitments And Practitioner Perspectives, Thuy-Vy Lillian Pham

Honors Theses

This thesis takes a sociological approach to examine healthcare workers' beliefs and medical organizations’ solidarity statements related to diversity and equity and how these discourses aligned and/or diverged. Through interviews with healthcare providers in Mississippi and content analysis of solidarity statements, the study finds that discussions on health disparities more frequently addressed socioeconomic inequality rather than systemic racism, diverging from organizational statements. This emphasis may partly stem from the demographics of the study participants, who were predominantly White—which also reflected the staff where they worked. Additionally, while healthcare workers recognized structural issues related to health disparities, they often showed hesitancy …

Investigating The Relationship Between Consistent Workout Regimen On Quality Of Life Among Crossfitters In South Mississippi, Christian Glass

Honors Theses

Robust literature exists to support the utility of CrossFit in improving metabolic and cardiovascular well-being. However, a metaphorical chasm exists not in the study of the physiological effects of CrossFit but in the psychological effects, namely quality of life (QOL). This thesis aimed to offer an installment into this gap by investigating trends among a population of 81 CrossFitters in south Mississippi. To best fulfill this task, a quantitative study was conducted using a 32-item survey composed of a mixture of questions from the World Health Organization Quality of Life Brief Version (WHOQOL- BREF) to assess reported quality of life …

An Emergent Genealogy Of Kahuku’S Contested Red Raider Mascot, Kali Fermantez, Lisa Uperesa

Pacific Studies

No abstract provided.

Vol. 46 No. 2 (2023): Pacific Studies Full Issue, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies

Pacific Studies

Pacific Studies is published two times a year by The Jonathan Nāpela Center for Hawaiian and Pacific Studies, Brigham Young University Hawai‘i #1979, 55–220 Kulanui Street, Lā ‘ie, Hawai‘i 96762, but responsibility for opinions expressed in the articles rests with the authors alone. Subscription rate is US$40.00 yearly, payable to The Jonathan Nāpela Center for Hawaiian and Pacific Studies. The Jonathan Nāpela Center for Hawaiian and Pacific Studies (formerly The Pacific Institute) is an organization funded by Brigham Young University Hawai‘i. The Center assists the University in meeting its cultural and educational goals by undertaking a program of teaching, research, …

(Wp 2023-06) Richard Arena On Sraffa And Wittgenstein, John B. Davis

Economics Working Papers

This paper discusses Richard Arena’s insightful and original contributions to interpreting the important interaction between Piero Sraffa and Ludwig Wittgenstein. It discusses this in terms of dilemmas they each encountered in transitions in their thinking in the 1930s, emphasizes the influence of Sraffa’s unpublished “Surplus Product” text, compares Sraffa’s critique of “natural science point of view” and Wittgenstein’s critique of logical form, and compares Sraffa’s later understanding of the relationship between production and distribution and Wittgenstein’s later understanding of forms of life and language-games. The paper argues this thinking opened up a approach to economic philosophy in connection with the …

An Examination Of The Intersection Between Gender And The Experiences Of Female Adventure Tour Guides In Tanzania, Ellen Koppa

All Dissertations

Tourism may be a source of growing gender inequity in some tourist setting due to their cultural and historical contexts even though it is a potential instrument for improving the welfare of women through employment and entrepreneurial activities. Many studies have focused on the role of tourism in improving the lives of women in Tanzania, but few have focused on women employed in male dominated positions like adventure tour guiding. While being a female tour guide is regarded as a big achievement in Tanzania with many women wanting to be tour guides, there are very few female tour guides in …

An Integrative Approach To Managing A Species Of Conservation Concern: Resource Selection, Spatial Ecology, And Population Genetics Of The Green Salamander (Aneides Aeneus), Megan Novak

All Dissertations

The relationship between wildlife and the environment they inhabit is dependent on both spatial and temporal scales. It is therefore crucial that biological investigations account for ecological scale when analyzing patterns and processes established, particularly when such investigations inform conservation management plans. This dissertation provides extensive insight into the conservation biology of the green salamander (Aneides aeneus), a critically imperiled species in South Carolina. The green salamander is a species that exists in a patchy network of rock outcrops within mountainous forest landscapes, and most studies on habitat suitability for green salamanders have been conducted on the macrohabitat, …

Vehicle-Bridge Interaction Simulation And Damage Identification Of A Bridge Using Responses Measured In A Passing Vehicle By Empirical Mode Decomposition Method, Shohel Rana, Md. Rifat Zaman, Md. Ibrahim Islam Ifty, Seyedali Mirmotalebi, Tahsin Tareque

Civil Engineering Faculty Publications

To prevent early bridge failures, effective Structural Health Monitoring (SHM) is vital. Vibration-based damage assessment is a powerful tool in this regard, as it relies on changes in a structure’s dynamic characteristics as it degrades. By measuring the vibration response of a bridge due to passing vehicles, this approach can identify potential structural damage. This dissertation introduces a novel technique grounded in Vehicle-Bridge Interaction (VBI) to evaluate bridge health. It aims to detect damage by analyzing the response of passing vehicles, taking into account VBI. The theoretical foundation of this method begins with representing the bridge’s superstructure using a Finite …

Traumatic Consequences In Native Hawaiians After Colonization, Andrea Morland-Tellez, Elizabeth Drummond

Honors Thesis

The Native Hawaiian population is a marginalized group that has endured cultural trauma due, in part, to their history of colonization by Europe in 1778. This colonization has contributed to the Native Hawaiian’s loss of cultural identity, land, native language, and their way of life. As a result, many Native Hawaiians are left questioning their cultural identity. This project sought to better understand the impact of colonization on the Native Hawaiian people, specifically on their experience of homelessness, substance use, and overall disempowerment over time. A systematic review of multiple literary and anecdotal sources was conducted including peer- reviewed articles …

Library News December 2023, Research Medical Library

Library News 2023

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