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Addressing Vision Impairments Following Neurological Injuries: A Vision Protocol For Occupational Therapists, Dyrin Cordero May 2023

Addressing Vision Impairments Following Neurological Injuries: A Vision Protocol For Occupational Therapists, Dyrin Cordero

UNLV Theses, Dissertations, Professional Papers, and Capstones

Vision impairments have a high prevalence in adults with a stroke or traumatic brain injury (TBI), potentially affecting up to 90% of this population. However, these impairments are often overlooked during the rehabilitation process due to a lack of education and training provided to occupational therapists (OTs). Limited research also contributes to no standardized best practice guidelines for OTs to follow (Aravich & Troxell., 2021). This issue is important to occupational therapy practitioners because vision impairments negatively affect a person's capacity for recovery, quality of life, safety, and mental health (Berger et al., 2016). Occupational therapists aim to utilize holistic …

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Biochemical Characterization Of Fsa1572 From Fervidibacter Sacchari, The First Hyperthermophilic Gh50 With Β-1, 4-Glucanase Activity, Jonathan Covington May 2023

Biochemical Characterization Of Fsa1572 From Fervidibacter Sacchari, The First Hyperthermophilic Gh50 With Β-1, 4-Glucanase Activity, Jonathan Covington

UNLV Theses, Dissertations, Professional Papers, and Capstones

The bacterium Fervidibacter sacchari is an aerobic hyperthermophile that catabolizes various polysaccharides and is the only cultivated member of the class Fervidibacteria within the phylum Armatimonadota. Among its glycoside hydrolase (GH) cache is an enzyme from GH family 50 (GH50), an understudied family with only 25 characterized representatives and two known activities from 1,518 predicted members in the Carbohydrate-Active EnZyme (CAZy) Database. Here, we expressed, purified, and functionally characterized an extracellular GH50 from F. sacchari called Fsa1572. Using colorimetric assays, we show it has novel β-1,4-glucanase activity and only weak agarose activity that is typical for GH50 enzymes. The purified …

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Long-Range Regulation By The Shigella Virulence Gene Regulator, Virb, Cody Cris May 2023

Long-Range Regulation By The Shigella Virulence Gene Regulator, Virb, Cody Cris

UNLV Theses, Dissertations, Professional Papers, and Capstones

Nucleoid-structuring proteins (NSPs) in bacterial cells can exert gene regulatory effects over great distances on DNA. This contrasts with the traditional view of bacterial transcriptional regulation, where transcription factors bind cis-acting regulatory sites proximal (<250 bp) to promoters to influence gene expression. In Shigella species, the histone-like nucleoid-structuring protein (H-NS) transcriptionally silences many genes on the large (~220 kb) virulence plasmid. During host colonization, however, silencing by H-NS is alleviated by the anti-silencer protein, VirB, which remodels the H-NS:DNA complex. This transcriptional anti-silencing is mediated by VirB:DNA interactions and the modulation of DNA supercoiling, which lead to the up-regulation of virulence genes. VirB is a central regulator of Shigella virulence, but the mechanistic basis for transcriptional regulation is incompletely characterized. Here, I focus on the potential for VirB to regulate transcription from remotely located DNA binding sites. Employing complementary in vivo approaches, I assessed the spatial stringency of the VirB binding site and elucidated how varying cellular VirB levels impacts regulation over different distances. I also evaluated how a molecular roadblock on DNA influences remote regulation by VirB. Additionally, I developed control tools to validate the ability of VirB to spread along DNA, an activity of VirB that putatively drives transcriptional regulation. These data are consistent with transcriptional anti-silencing being driven by VirB spreading along DNA. Overall, these findings highlight how VirB is not a conventional transcriptional regulator and broaden our perspective on transcriptional control in bacteria. Furthermore, this work contributes to our understanding of long-range gene regulatory effects, which are frequently overlooked and poorly characterized in bacteria.

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The Efficacy Of An Educational Toolkit To Enhance Knowledge Of Pediatric Reflux Management Among Occupational Therapists, Kelly Cullerton May 2023

The Efficacy Of An Educational Toolkit To Enhance Knowledge Of Pediatric Reflux Management Among Occupational Therapists, Kelly Cullerton

UNLV Theses, Dissertations, Professional Papers, and Capstones

This manuscript describes a quality improvement project completed by a student in the University of Nevada Las Vegas Occupational Therapy Doctorate Program. The project tests the efficacy of an educational toolkit for occupational therapists staffed at an acute care hospital in Las Vegas, Nevada, to increase their perceived knowledge of and ability to educate families on conservative management techniques for pediatric reflux management. Results indicate that the toolkit demonstrated efficacy in achieving this objective. The toolkit provided useful staff education and parent handouts for the occupational therapists to utilize in patient care as appropriate. This project’s ultimate aim was to …

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Outside, Looking In: A Dissertation On Mindful Walking And How Green Exercise Affects State Mindfulness And Connectedness To Nature, Dustin Wyatt Davis May 2023

Outside, Looking In: A Dissertation On Mindful Walking And How Green Exercise Affects State Mindfulness And Connectedness To Nature, Dustin Wyatt Davis

UNLV Theses, Dissertations, Professional Papers, and Capstones

INTRODUCTION: Mindfulness, green exercise, and connectedness to nature are increasingly popular topics among academics and the public. These three topics overlap in the underexplored area called mindful green exercise. Mindful green exercise is a blend of mindful exercise and green exercise. Mindful exercise is physical exercise during which people pay attention on purpose without judgment to each new present moment. The person applies an accepting awareness to internal phenomena (thoughts, emotions, and bodily sensations) and external phenomena (objects and events in the environment). Green exercise is exercise performed outdoors in natural environments. Despite its name, green exercise does not only …

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The Influence Of Transcranial Alternating Current Stimulation On Fatigue Resistance, Kayla De Guzman May 2023

The Influence Of Transcranial Alternating Current Stimulation On Fatigue Resistance, Kayla De Guzman

UNLV Theses, Dissertations, Professional Papers, and Capstones

Fatigue is an exercise-induced reduction in muscle force generating capacity. Several studies have shown that some forms of non-invasive brain stimulation can increase the resistance to fatigue during sustained isometric contractions. The purpose was to determine the influence of transcranial alternating current stimulation (tACS) on the time to task failure (TTF) of a precision grip task in young adults. Twenty-two healthy young men and women participated in the study. The study utilized a randomized, double-blind, SHAM-controlled, within-subjects, crossover design. Each participant completed two experimental sessions (tACS, SHAM) with a 7-day washout period between sessions. Each session involved performance of a …

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Mena Terrorism And The West: Explaining Why Terrorist Groups From The Middle East And North Africa Target Western Democracies, Michael A. Defeo May 2023

Mena Terrorism And The West: Explaining Why Terrorist Groups From The Middle East And North Africa Target Western Democracies, Michael A. Defeo

UNLV Theses, Dissertations, Professional Papers, and Capstones

Terrorist groups from the Middle East and North Africa (MENA) region remain one of the most formidable threats to international security. While their organization and motives have been significantly different over time, a commonality is that they tend to disproportionately target Western democracies. This dissertation argues that this trend is mainly a consequence of the foreign policies that these states pursue in the region. These policies, in terms of support for Israel and interventionism, are theorized as being the precipitous causes of MENA terrorism. Likewise, it is argued that the democratic institutions and extents of globalization in these states are …

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The Impact Of Childhood Experiences On Involvement And Confidence In Social Institutions, Jordan Sydney Donohue May 2023

The Impact Of Childhood Experiences On Involvement And Confidence In Social Institutions, Jordan Sydney Donohue

UNLV Theses, Dissertations, Professional Papers, and Capstones

Childhood is made up of a wide array of both negative and positive experiences. One potential negative childhood experience may be understood as childhood maltreatment. Childhood maltreatment consists of physical abuse, sexual abuse, emotional abuse, or neglect prior to age 18 (World Health Organization, 2020). Neighborhood, family, and school dynamics are other areas in a child’s life that may create difficulties and challenges. Prior research has concluded that negative outcomes are associated with poor school, community, and family dynamics (Coulton, 2007; Lansford, 2009; Split et al., 2012). Previous research has also examined the impact of childhood maltreatment on different domains …

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Evaluating Risk-Appropriate Perinatal Care In Nevada, Janice Enriquez May 2023

Evaluating Risk-Appropriate Perinatal Care In Nevada, Janice Enriquez

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the United States, (U.S.) technological advancement and increased accessibility to health care resources have not deterred the increasing maternal morbidity and mortality rates (CDC, 2022). In 2019, 754 maternal deaths were reported; in 2020, 861 deaths were reported. In a span of one year, the maternal mortality rate increased by 14% (CDC,2022). American Indian/Alaska Native and Black birthing people are 2 to 3 times more likely to die from a pregnancy-related cause than White birthing people (CDC, 2019). 80% percent of all pregnancy related deaths can be prevented (CDC, 2022). Risk-appropriate care is a strategy used to improve perinatal …

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Information-Theoretic Model Diagnostics (Infomod), Armin Esmaeilzadeh May 2023

Information-Theoretic Model Diagnostics (Infomod), Armin Esmaeilzadeh

UNLV Theses, Dissertations, Professional Papers, and Capstones

Model validation is a critical step in the development, deployment, and governance of machine learning models. During the validation process, the predictive power of a model is measured on unseen datasets with a variety of metrics such as Accuracy and F1-Scores for classification tasks. Although the most used metrics are easy to implement and understand, they are aggregate measures over all the segments of heterogeneous datasets, and therefore, they do not identify the performance variation of a model among different data segments. The lack of insight into how the model performs over segments of unseen datasets has raised significant challenges …

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The Impact Of Attachment And Optimism On Delinquency, Kaylee Dawn Faria May 2023

The Impact Of Attachment And Optimism On Delinquency, Kaylee Dawn Faria

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to assess if justice-involved juveniles’ optimism toward future prospects mediates the relationship between parental and peer attachment and the likelihood of future delinquency. Theory and prior research support the argument that there is a negative relationship between parental and peer attachment and delinquency, and a negative relationship between optimism and delinquency. This study attempts to expand on this research by exploring whether parental and peer attachments influence delinquency through their influence on optimism for future prospects. This study utilizes data from the Pathways to Desistance Study, a panel study of seriously justice-involved youth, to …

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An Educational Sleep Hygiene Module For Unlv Students To Promote Occupational Performance, Therese Fernandez May 2023

An Educational Sleep Hygiene Module For Unlv Students To Promote Occupational Performance, Therese Fernandez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Does participation in a sleep hygiene educational module improve perceived ability to practice habits supporting increased engagement for leisure occupations in UNLV students? Sleep hygiene refers to a set of rules or practices to promote and allow for better sleep quality. Poor sleep quality is a prevalent problem among college students due to numerous reasons, including poor sleep hygiene. Since there is a strong correlation between poor sleep quality and daily function and given that occupational therapists assist clients to function optimally in activities of daily living despite impairment, it is essential to expand this area of practice to include …

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Digitods, Statistical Machine Learning Algorithms, And Internet Cognition: Sociocultural Learning Through Familial Modeling And Mediated Exchanges, Sina Foley May 2023

Digitods, Statistical Machine Learning Algorithms, And Internet Cognition: Sociocultural Learning Through Familial Modeling And Mediated Exchanges, Sina Foley

UNLV Theses, Dissertations, Professional Papers, and Capstones

With ever-advancing technology and the ubiquity of smart devices, younger generations of children are growing up with access to smart mobile technology from birth. These digitally acculturated children ages 0-5, or digitods, are learning to make sense of the world in large part through sociocultural exchanges in the home. As these digital natives are habituated to mobile media, prevalent and accessible, they are also opened to data-mining and target-marketing as their online engagement signals algorithmic function. This study adds to our understanding of how digitods may be susceptible to algorithmic culture and strategic digital marketing, as familial modeling and mediated …

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Utilizing An Interdisciplinary Approach: Education Of Early Progressive Mobility Protocol In The Icu/Acute Setting, Mary Ashley Galan-Gornal May 2023

Utilizing An Interdisciplinary Approach: Education Of Early Progressive Mobility Protocol In The Icu/Acute Setting, Mary Ashley Galan-Gornal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Prior to the COVID-19 pandemic, Early Progressive Mobility (EPM) was used more frequently in an interdisciplinary approach to improve patient outcomes. The aim is to create a protocol that takes an interdisciplinary approach and makes use of early progressive mobility. In the acute setting, occupational therapists are equipped to promote quality of life and independence both, during and after hospitalization, which is critical for early mobilization being beneficial for patients who are able to participate in therapy.This Doctoral Capstone project was aimed at demonstrating the value of occupational therapists in the intensive care unit (ICU)/acute setting by utilizing EPM in …

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Desert Spring Prokaryotes And Benthic Macroinvertebrates: Geological And Ecological Controls, Ariel D. Friel May 2023

Desert Spring Prokaryotes And Benthic Macroinvertebrates: Geological And Ecological Controls, Ariel D. Friel

UNLV Theses, Dissertations, Professional Papers, and Capstones

Desert springs are aquatic oases, being considered among the most diverse and imperiled ecosystems on Earth. Despite the ecological significance and threatened status of desert springs, few studies have surveyed the microorganisms in these systems or their interactions with other community members. The primary goal of this dissertation was to describe the major controls influencing the community ecology of prokaryotic and BMI communities in cold- and moderate-temperature desert springs of the southern hydrographic Great Basin. Chapter 1 provides a broad overview of spring ecosystems and of each chapter included in this dissertation. Chapter 2 documents the first-ever, regional-scale survey of …

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Increasing Self-Perceived Competence In Performing Independent Living Skills Among Unhoused Youth And Young Adults, Stacie M. Gomez May 2023

Increasing Self-Perceived Competence In Performing Independent Living Skills Among Unhoused Youth And Young Adults, Stacie M. Gomez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The aim of this project is to determine if the development and implementation of an independent living skills workshop would improve the perceived competence of unhoused youth in performing independent living skills.Methods: The Casey Life Skills Short Assessment was used as a pre-test and post-test. It was found that unhoused young adults generally scored low on finding affordable housing, budgeting, banking skills, education training, and feeling a sense of pride in their lives. A four-week independent living skills program was designed and implemented, which included workshops focused on identified needs. The data was analyzed using a Paired Samples t-Test …

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High-Yield Bioinspired Atmospheric Water Capture Through Hydrogels, Yiwei Gao May 2023

High-Yield Bioinspired Atmospheric Water Capture Through Hydrogels, Yiwei Gao

UNLV Theses, Dissertations, Professional Papers, and Capstones

Water scarcity is a global issue affecting billions of people, and atmospheric water harvesting (AWH) technology has been identified as a potential solution. However, existing single-material AWH approaches have limited water harvesting yields due to alternated water capture, storage, and release stages, and only function within a high relative humidity range. In my doctoral research project, we developed a bio-inspired, hydrogel-based multi-layer AWH approach that allows for segregated capture, storage, and release stages, and is envisioned to have higher daily water harvesting efficiency even in low-humidity areas. My research began with understanding the relations between hydrogel mechanical stiffness, hydraulic permeability, …

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Nonpharmacological Pain Management Of Adult Patients In The Burn Unit: An Interdisciplinary Toolkit Through The Occupational Therapy Lens, Taylor Harrison-Merrill May 2023

Nonpharmacological Pain Management Of Adult Patients In The Burn Unit: An Interdisciplinary Toolkit Through The Occupational Therapy Lens, Taylor Harrison-Merrill

UNLV Theses, Dissertations, Professional Papers, and Capstones

Interdisciplinary care is the standard for individuals admitted to a burn unit, yet there is a lack of uniform education among different professionals regarding pain management (Kuhlmann & Tallman, 2022). Occupational therapists offer a unique and holistic lens to pain management by using nonpharmacological interventions to reduce patients’ perception of pain (American Burn Association, 2017; Nielson et al., 2022). The purpose of this quality improvement doctoral capstone was to apply this occupational lens in an educational toolkit designed for the interdisciplinary team that addressed nonpharmacological pain management for adults in the burn unit; effectively closing the knowledge gap across disciplines …

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Maternal Health In The Context Of Social, Political, And Economic Change Among Hadzabe Foragers Of Tanzania, Kristen Herlosky May 2023

Maternal Health In The Context Of Social, Political, And Economic Change Among Hadzabe Foragers Of Tanzania, Kristen Herlosky

UNLV Theses, Dissertations, Professional Papers, and Capstones

Many low and middle-income countries have implemented new national policy measures aimed at reducing maternal morbidity and mortality due to globalized efforts to improve women’s maternal health. One of the main goals is to move childbirth into hospital facilities and improve health access and education outreach. For Indigenous communities around the world, these measures have fallen short of their goals. Indigenous women suffer from greater social, political, and economic disparities and inequalities, have poorer health indicators overall, and worse maternal health outcomes compared to their non-Indigenous counterparts. For small-scale communities, we have limited data on reproductive health among women, specifically …

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The Closing Of One Black Box, The Opening Of Another: A Self-Study Of How An Instructional Coach Makes Decisions, Andromeda L. Hightower May 2023

The Closing Of One Black Box, The Opening Of Another: A Self-Study Of How An Instructional Coach Makes Decisions, Andromeda L. Hightower

UNLV Theses, Dissertations, Professional Papers, and Capstones

Despite the efforts of traditional and alternative teacher education programs (i.e. pre-service teacher education) in the United States, teachers frequently report feeling unprepared by the time they begin teaching full time in the classroom. Teachers with low levels of self-efficacy are correlated with lower job satisfaction, higher levels of stress and anxiety, and lower student achievement gains in the classroom. To assist with ameliorating these gaps, schools, districts, and private distributors provide training opportunities for teachers once they have begun the job (i.e. in-service teacher training) in the form of teacher professional development. Mainstream professional development approaches are traditionally simplistic …

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Increasing Foster Parent Awareness Of An Occupation-Based Approach To Child Well-Being, Taylar Hirte May 2023

Increasing Foster Parent Awareness Of An Occupation-Based Approach To Child Well-Being, Taylar Hirte

UNLV Theses, Dissertations, Professional Papers, and Capstones

Foster parents are an integral part of the child welfare system. They provide temporary care to children who otherwise cannot stay in their homes. They are required to be state or county licensed and each licensing agency has their own requirements including varying hours of training. The literature indicates foster parents do not receive enough training to feel prepared and confident to care for children with increased mental health, behavioral, school-related, cognitive, and peer relationship challenges that foster children often experience (AOTA, 2017; Lotty et al., 2020; Paul-Ward et al., 2014; Smith, 2022).The purpose of the present capstone project was …

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Perceived Usefulness, Ease Of Use, And Satisfaction Of A Swaddle Bathing Educational Guide Among Parents/Guardians Of Nicu Premature Infants, Makenzie Leigh Hogbin May 2023

Perceived Usefulness, Ease Of Use, And Satisfaction Of A Swaddle Bathing Educational Guide Among Parents/Guardians Of Nicu Premature Infants, Makenzie Leigh Hogbin

UNLV Theses, Dissertations, Professional Papers, and Capstones

The current availability of high-quality and comprehensive educational resources made available to parents and guardians with infants admitted to the Neonatal Intensive Care Unit is limited in terms of content and provision. Additionally, there exists a plethora of information regarding the impact of the sensory environment on premature and critically ill infants as well as interventions to mitigate these effects that are not efficiently conveyed to their families. Previous research asserts that consistency with the application of sensory interventions with these infants bodes well for positive outcomes, leading one to believe that caregivers may benefit from learning these strategies so …

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Flying The Unfriendly Skies: How Flight Crew Members Perceived And Communicatively Constructed The Emotional Labor Of Their Positions Throughout The Covid-19 Pandemic, William B.L. Ingelson May 2023

Flying The Unfriendly Skies: How Flight Crew Members Perceived And Communicatively Constructed The Emotional Labor Of Their Positions Throughout The Covid-19 Pandemic, William B.L. Ingelson

UNLV Theses, Dissertations, Professional Papers, and Capstones

The COVID-19 pandemic brought about unprecedented levels of volatility to all hospitality industries, including aviation. Such levels of volatility have highlighted a need to understand the effects of the COVID-19 pandemic on flight crew communication. This study explores the impact of the COVID-19 pandemic on intra-flight crew communication and the emotional labor flight crew members experienced. Utilizing the theoretical frameworks of facework, politeness theory, emotional labor, and emotional management, this study examined how participants communicated through the tumult of this time period. This study discovered heavy usage of surface acting and increased levels of emotional labor through 28 qualitative interviews …

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Spectroscopic Studies On Silicon And Chalcopyrite Materials For Solar Energy Applications, Amandee Hua May 2023

Spectroscopic Studies On Silicon And Chalcopyrite Materials For Solar Energy Applications, Amandee Hua

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this dissertation, silicon-based materials for photovoltaics and chalcopyrite-based materials for photoelectrochemical water splitting are investigated using various spectroscopic and microscopic techniques. Although silicon dominates the photovoltaic market, further improvement can be made by using an alternative low temperature passivation approach. Currently, thermally grown SiO2 passivation is commonly used for silicon solar cells. However, this technique requires high processing temperatures (>800 °C), which increases the thermal budget, potentially decreases the bulk quality of Si, and can lead to difficulties in implementing in production lines. Here, a S-based passivation approach is studied that require lower processing temperatures of ~550 °C. …

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Exploration Of H2o Ice At Extreme Conditions, Zachary M. Grande May 2023

Exploration Of H2o Ice At Extreme Conditions, Zachary M. Grande

UNLV Theses, Dissertations, Professional Papers, and Capstones

Static compression experiments on water ice are needed for precise characterization and discovery of new ice phases near room temperature. Here I present my efforts and the developments that have been made to reduce detrimental effects found in high-pressure experiments in order to acquire precise measurements on ice approaching 3 Mbar. Several key observations are made, relating to the phase transition of ice-VII to X, an intermediate phase I have named ice-VIIt and evidence of a post ice X phase. Some of these experiments have been replicated using D2O ice as well, in order to gain insight into nuclear quantum …

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Individual Differences In Police Officers’ Decision Styles In Order Maintenance Policing, Damarrah Elisheba Jameson May 2023

Individual Differences In Police Officers’ Decision Styles In Order Maintenance Policing, Damarrah Elisheba Jameson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Day-to-day police work tends to be in order maintenance policing. These encounters necessitate officer discretion in decision responses to manage them. These decision responses reflect an officer’s decision style which precedes the encounter and drives subsequent decision making to manage them. However, little is known about officer-level decision style. For example, whether an officer has a rational, intuitive, dependent, avoidant, or spontaneous decision style (Scott& Bruce, 1995). Police training in any format often lacks attention to decision styles. As such, an officer’s decision style is most likely associated with demographics (e.g., age, gender) and occupational self-efficacy – a reflection of …

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A Light Gradient Boosting Machine-Enabled Model To Predict Radiation-Induced Toxicities In Cancer Patients Receiving Chemoradiotherapy, Zirui Jiang May 2023

A Light Gradient Boosting Machine-Enabled Model To Predict Radiation-Induced Toxicities In Cancer Patients Receiving Chemoradiotherapy, Zirui Jiang

UNLV Theses, Dissertations, Professional Papers, and Capstones

The objective of this study was to develop a predictive model that utilizes a Light Gradient Boosting Machine (Light-GBM) to accurately assess the risk of severe radiation-induced toxicities in cancer patients undergoing chemoradiotherapy. The occurrence of these toxicities can have a substantial impact on the patients' quality of life. The Light-GBM model using clinical feature alone or integrating radiomic features extracted from computed tomography (CT) images used in treatment planning with clinical features can enhance the accuracy of early prediction.The study included 179 breast cancer patients and 223 patients with nasopharynx cancer who were treated with both radiotherapy and chemotherapy …

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Applying Instrumental Neutron Activation Analysis To Assess Air Pollution With Spanish Moss As A Bioindicator In The Low Country Of The Savannah River Basin, Christina Jiang May 2023

Applying Instrumental Neutron Activation Analysis To Assess Air Pollution With Spanish Moss As A Bioindicator In The Low Country Of The Savannah River Basin, Christina Jiang

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Savanah River Basin is an area of 9,850 square miles that stretches from the border between South Carolina and Georgia, which empties into the Atlantic Ocean near Savannah, Ga. This area is home to surrounding cities, industrial sites, and the Savanah River Site. It is well documented that traffic, industrial operations, and agriculture contribute to worsening air pollution that needs to be monitored. While Tillandsia usneoides (Spanish moss) has been used in previous studies that prove it to be an effective biomonitor for air pollution and an accumulator of heavy metals, there have been no biomonitoring studies in the …

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Solving Boundary Value And Initial Boundary Value Problems Of Partial Differential Equations Using Meshless Methods, Adam Johnson May 2023

Solving Boundary Value And Initial Boundary Value Problems Of Partial Differential Equations Using Meshless Methods, Adam Johnson

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this dissertation, the methods of fundamental solutions (MFS) and the methods of particular solutions (MPS) are used to solve the boundary value problems of the Poisson and Helmholtz equations, where the particular solutions of the Poisson and Helmholtz equations in [13, 14] are used. Then the initial boundary value problems of the diffusion and wave equations are discretized into a sequence of boundary value problems of the Helmholtz equation by using either the Laplace transform or time difference methods along the lines of [8]. The Helmholtz problems are solved consequently in an iterative manner which leads to the solution …

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Joint Constraints On Kepler-36 From Kepler And New Keck-Hires Data, Nicholas Juliano May 2023

Joint Constraints On Kepler-36 From Kepler And New Keck-Hires Data, Nicholas Juliano

UNLV Theses, Dissertations, Professional Papers, and Capstones

I analyze new HIRES Radial Velocity (RV) data in conjunction with transit mid-times and uncertainties from the full 17 quarters of Kepler data to reassess the orbital parameters of the Kepler-36 system. Six additional RV measurements were taken by the Keck-HIRES spectrograph from September 21, 2021 to October 11, 2021. I carry out a differential evolution Markov Chain Monte Carlo-based (DEMCMC) analysis to infer improved orbital elements for the two known planets in the system. Leveraging additional information provided by the new RV measurements, I extend this DEMCMC analysis to a possible three-planet configuration. I explore the likelihood of a …

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