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Anxiety, Depression, And Suicidal Ideation Among Transgender Individuals With Gender Receiving Gender-Affirming Hormone Therapy, Rosa E. Diaz
UNLV Theses, Dissertations, Professional Papers, and Capstones
Purpose: Gender may align with one’s sex but doesn’t always and sometimes leads to Gender Dysphoria (GD). Gender-affirming hormone therapy (GAHT) is often one of the first medical treatments used for GD yet few studies have examined the effects of GAHT on mental health (depression, anxiety, and suicidal ideation).Methods: Participants were 18 years or older and self-reported as being diagnosed with GD and recruited across the United States using snowball and convenience sampling. The Patient Health Questionnaire-9 (PHQ-9) was used to measure depression scores, General Anxiety Disorder-7 (GAD-7) was used to measure anxiety scores, and Suicidal Behaviors Questionnaire-Revised (SBQ-R) was …
Effects Of Particle Size And Replacement Proportion Of Post-Consumer Glass In Concrete, Negasi Gebremichael
Effects Of Particle Size And Replacement Proportion Of Post-Consumer Glass In Concrete, Negasi Gebremichael
UNLV Theses, Dissertations, Professional Papers, and Capstones
Concrete, next to water, is the most used material (Gagg, 2014), which consumes natural or manufactured aggregates and resource-intensive cement. Concrete is also a more wasteful construction material than timber and steel. Depleting the natural resource due to aggregate extraction and the environmental unfriendliness of cement production have left the construction industry with no choice. Reducing waste, reusing, or recycling can help conserve natural resources. In this regard, the construction industry constantly seeks full or partial replacement of concrete aggregates and cement with recycled material. Glass is a candidate for replacing the three major components: cement, fine aggregate, and coarse …
A Mechanically Intelligent Hosing-Drone, Blake Hament
A Mechanically Intelligent Hosing-Drone, Blake Hament
UNLV Theses, Dissertations, Professional Papers, and Capstones
This manuscript presents a ”mechanically intelligent” approach to designing a Hosing-Drone for heavy-duty pressure washing. Spraying a hose creates strong reaction forces and torques. Previously demonstrated spraying robots are over-engineered to be very massive with huge inertias. These high inertias ”wash out” the reaction from the spraying. In the proposed approach, the contributions from all observable fluid dynamics, fluid structure interactions, and aerodynamics are studied individually and for the coupled system. Experimental data is collected and fit to dynamic models. These models are used to design a smaller, lighter, more agile vehicle than has been previously demonstrated. An impedance controller …
Covid-19 Isolation Compliance Among Students And Employees Of A Large Public University, Nicolette Harmon
Covid-19 Isolation Compliance Among Students And Employees Of A Large Public University, Nicolette Harmon
UNLV Theses, Dissertations, Professional Papers, and Capstones
Isolation has been used to prevent the spread of many infectious diseases including COVID-19. The CDC’s isolation recommendations have changed over the course of the COVID-19 pandemic, currently infected individuals must stay at home for 5 full days. The CDC cites low compliance rates as one of the reasons for the recent reduction to the number of days in isolation. However, the CDC could only cite studies from other countries due to the lack of studies on isolation compliance in the United States. This study aimed to determine what percentage of UNLV students and staff complied with the isolation guidelines …
Hydrogeologic Heterogeneity Identification: Using Inverse Modeling Of Synthetic Borehole Temperatures To Predict Groundwater Flux, Kevin Heintz
UNLV Theses, Dissertations, Professional Papers, and Capstones
Heat has been effectively used as a groundwater tracer for decades, and high-resolution temperature data can better identify and quantify discrete flow zones. Refinements to the numerical modeling of advective heat transfer in borehole temperature sensing deployments can improve understanding of dynamic hydrogeologic systems. In my thesis, I develop a novel two-dimensional coupled radial groundwater flow and heat transfer numerical model that considers intra-borehole vertical flow. To test the performance of this model, I used finite element analysis to generate synthetic data sets consisting of prescribed variable flow fields and resulting borehole temperatures. I input synthetic temperatures into the two-dimensional …
Self-Reported Covid-19 Diagnosis And Severity And Its Association With Utilization Of And Delays In Needed Medical Care, Mohammad Hesam Alavi
Self-Reported Covid-19 Diagnosis And Severity And Its Association With Utilization Of And Delays In Needed Medical Care, Mohammad Hesam Alavi
UNLV Theses, Dissertations, Professional Papers, and Capstones
Covid-19, caused by the virus SARS-CoV-2, was declared a pandemic by the World Health Organization (WHO) on March 11, 2020. The pandemic-related disruptions and the pursuant lockdowns have adversely impacted every aspect of people’s lives including access to medical care, cancer care, preventive medicine, mental health, and dental care in an already imperfect healthcare system in the US. This study utilized the 2020 self-reported data from quarters 3 and 4 of the National Health Interview Survey, a cross-sectional interview survey by the Centers for Disease Control and Prevention, to determine the possible association of self-reported COVID diagnosis, test positivity, and …
Estimation Of The Parameters In A Mixture Of Two Normal Distributions And The Generalized Pivotal Quantity Method, Md Faruk Hossain
Estimation Of The Parameters In A Mixture Of Two Normal Distributions And The Generalized Pivotal Quantity Method, Md Faruk Hossain
UNLV Theses, Dissertations, Professional Papers, and Capstones
A pivotal quantity is a random variable that is a function of both the random data and the unknown population parameters and whose probability distribution does not depend on any of the unknown parameters. The population parameters here may include nuisance parameters. Historically, pivotal quantities have been used for the construction of test statistics for hypothesis testing of some of these unknown parameters. They have also been used for the construction of confidence intervals for some of these parameters.Generalized pivotal quantities (GPQ) were introduced by Tsui and Weerahandi (1989) and Weerahandi (1993). A GPQ is a function, not only of …
Negative Customer Reviews And The Online Decision-Making Process: The Role Of Construal Fit, Minji Kim
Negative Customer Reviews And The Online Decision-Making Process: The Role Of Construal Fit, Minji Kim
UNLV Theses, Dissertations, Professional Papers, and Capstones
Consumers seek out online reviews to aid their decision-making, particularly when purchasing products and services online. Given their power to influence consumer behavior, online reviews have been extensively studied in various settings. While much research has focused on what determines the performance of online reviews, limited research has focused on why a particular review receives more or less attention from consumers. This study aims to fill this knowledge gap by exploring how consumers with different mindsets respond to online reviews framed at different levels of construal. Applying the construal fit principle, this research predicts that consumers more fluently process online …
Study Of Narrative Effects Of Each Instrumental Group In Exemplum: In Memoriam Kwangju By Isang Yun, Jeahyun Jo
Study Of Narrative Effects Of Each Instrumental Group In Exemplum: In Memoriam Kwangju By Isang Yun, Jeahyun Jo
UNLV Theses, Dissertations, Professional Papers, and Capstones
Isang Yun (1917–1995) is recognized as one of the most notable avant-garde Korean composers of the twentieth century. His compositions serve as a crucial link between Eastern and Western musical traditions because they contain elements of techniques from both traditions. My intention in this paper is to examine Yun and his symphonic poem Exemplum: in Memoriam Kwangju with the goal of helping the reader comprehend its narrative effects. I will also provide a musical analysis and interpretation based on Yun’s intention in composing Exemplum: in Memoriam Kwangju and examine Yun’s compositional approaches to the three different instrumental groups (strings, wind, …
Use Of Healthcare Utilization Records For Analyzing Trends In Clinical Toxoplasmosis: A Comparison Of Nevada And The United States, Elijah Kreutzer
Use Of Healthcare Utilization Records For Analyzing Trends In Clinical Toxoplasmosis: A Comparison Of Nevada And The United States, Elijah Kreutzer
UNLV Theses, Dissertations, Professional Papers, and Capstones
Toxoplasmosis, a zoonotic disease caused by the parasitic protist Toxoplasma gondii, is a ubiquitous, global public health concern with a wide variety of clinical manifestations. Surveillance for the disease is lacking even in developed countries, and what surveillance is present most often focuses on pregnant women. This research investigated trends in clinical toxoplasmosis in Nevada and nationally to address the lack of knowledge concerning how Nevada discharges compare to national discharges in cases of toxoplasmosis. Specifically, this research sought to determine what characterizes toxoplasmosis in Nevada across inpatient, outpatient, and emergency department settings, as well as how these cases differ …
Transformative Tourism Experience: Openness To Thriving, Solbi Lee
Transformative Tourism Experience: Openness To Thriving, Solbi Lee
UNLV Theses, Dissertations, Professional Papers, and Capstones
Over the last two decades, there has been growing academic rhetoric regarding the concept of transformation. Furthermore, the discussion of transformative experiences extends to the tourism industry and literature, reflecting the changing tourists' profiles and demands that challenge Destination Management Organizations (DMOs) to deliver tourist experiences that incorporate self-reflection and personal transformation. Transformative tourism experiences (TTE) (Soulard et al., 2021) refer to extraordinary encounters and episodes that prompt high emotional reactions that bring an opportunity to explore the self and significant inner personal changes. Despite the emerging academic and practical attention on TTE, research empirically testing the antecedents and outcomes …
Characterization Of The Isothermal Titration Calorimetry Single Injection Method Using T4 Polynucleotide Kinase As A Model System For Kinases, Rebecca Chaehee Lim
Characterization Of The Isothermal Titration Calorimetry Single Injection Method Using T4 Polynucleotide Kinase As A Model System For Kinases, Rebecca Chaehee Lim
UNLV Theses, Dissertations, Professional Papers, and Capstones
Kinases are an important class of enzymes involved in the regulation of different cellular processes. The dysfunctional activity, either hyperactivity or inactivity, of kinases has been associated with many types of diseases, making kinases a major therapeutic target. As of 2020, more than 80 kinase inhibitors have been FDA-approved and have revolutionized the treatment for progressive disorders such as cancers and Alzheimer's diseases. However, there is always the possibility of developing severe side effects or resistance to drugs so the search for new therapeutics must continue with efficiency and accuracy.Isothermal titration calorimetry (ITC) is a state-of-the-art technique specialized in detecting …
Dimensionality Of Natural Auditory Scene Perception: A Factor Analysis Study, Margaret A. Mcmullin
Dimensionality Of Natural Auditory Scene Perception: A Factor Analysis Study, Margaret A. Mcmullin
UNLV Theses, Dissertations, Professional Papers, and Capstones
Theories of auditory and visual scene analysis suggest the perception of scenes relies on the identification and segregation of objects within it, resembling a detail-oriented processing style, but it is possible that a global-oriented process also occurs while evaluating auditory scenes. There is evidence for global properties that enable rapid recognition of visual scenes, even without recognizing the individual objects comprising the scene. It is our understanding that a similar line of research has not been explored in the auditory domain; therefore, we evaluated the contributions of high-level global and low-level acoustic information to auditory scene perception. A secondary aim …
Transient Sources And How To Study Them: Selected Topics In Multi-Messenger Astronomy, Jiawei Luo
Transient Sources And How To Study Them: Selected Topics In Multi-Messenger Astronomy, Jiawei Luo
UNLV Theses, Dissertations, Professional Papers, and Capstones
The discovery of cosmic neutrino flux by IceCube, and the multi-messenger observations of gravitational event GW170817 ushered in the era of multi-messenger astronomy. Since the Universe itself is a natural laboratory, multi-messenger astronomy can help us study the most extreme physics processes in great detail. In this dissertation, we touch on some of the currently unanswered questions involving different types of transient sources and different “messengers” of multi-messenger astronomy. We employ a variety of analysis methods, including machine learning, a method that has not yet been widely adopted in astronomy but is rapidly gaining momentum.We start this dissertation with Chapter …
Taxonomic And Physiological Insights Into Novel Bacterial Class Fervidibacteria, Nancy Nou
Taxonomic And Physiological Insights Into Novel Bacterial Class Fervidibacteria, Nancy Nou
UNLV Theses, Dissertations, Professional Papers, and Capstones
Recent studies incorporating cultivation-independent techniques to assess microbial communities, namely metagenomics and single-cell genomics, have pushed the proposed number of bacterial phyla from less than 50 to over 100. One such lineage is the candidate bacterial phylum Fervidibacteria, a strictly thermophilic group that has been identified in terrestrial geothermal springs in North America, Asia, and Antarctica through DNA sequencing. By analyzing 62 medium- and high-quality genomes and through cultivation-dependent experiments, this study serves to set up taxonomy and describe physiology within the taxon. Over the course of this study, we propose Candidatus Fervidibacteria should be reclassified as novel class Fervidibacteria …
Mechanoelectrical Behavior In Polyvinyl Chloride (Pvc) Based Soft Polymer Gel Smart Sensors For Soft Robotic Applications, Justin Neubauer
Mechanoelectrical Behavior In Polyvinyl Chloride (Pvc) Based Soft Polymer Gel Smart Sensors For Soft Robotic Applications, Justin Neubauer
UNLV Theses, Dissertations, Professional Papers, and Capstones
Polyvinyl chloride (PVC) gels are a class of electroactive polymer that contain a PVC-based polymeric lattice and various amounts of plasticizer. PVC and plasticizer are industrially available and are commonly used in a wide range of applications including cable insulation, flexible hosing, and healthcare equipment. There are many plasticizer types available, some being extremely biocompatible with implementations in food-safe applications and even food additives for human consumption. Plasticizer weakly bonds to the long polymerized chains of the polymer lattice decreasing the modulus of the composite material. By adding excessive amounts of plasticizer, the bonding sites of these long carbon chains …
Along Strike Tectonic Evolution Of The Neogene Bermejo Foreland Basin And Eastern Precordillera Thrust Front, Argentina (30-32ºs), Zoey Catherine Plonka
Along Strike Tectonic Evolution Of The Neogene Bermejo Foreland Basin And Eastern Precordillera Thrust Front, Argentina (30-32ºs), Zoey Catherine Plonka
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Bermejo retroarc foreland basin system formed in flexural response to Miocene crustal thickening in the Andean orogenic system, specifically, the eastward propagation of the Precordillera fold-thrust belt and the basement-involved uplift of the Sierras Pampeanas. Previous work in the area has mainly focused on the mechanisms and expression of flat slab subduction and the structural geometry of the basement-involved Sierras Pampeanas and east-vergent Precordillera fold-thrust belt at depth. Much of this work has furthered the understanding of Bermejo basin evolution north of 31ºS, however debate still exists whether the N-S trending Bermejo basin evolved synchronously or asynchronously through time. …
Disentangling Instrumental And Reactive Aggression In The Competitive Reaction Time Task And Their Associations With Factors Of Meanness In Psychopathy, Ashley Michelle Poston
Disentangling Instrumental And Reactive Aggression In The Competitive Reaction Time Task And Their Associations With Factors Of Meanness In Psychopathy, Ashley Michelle Poston
UNLV Theses, Dissertations, Professional Papers, and Capstones
Aggression is often subtyped into reactive and instrumental aggression. Reactive aggression occurs in response to some form of provocation and is often accompanied by anger. Instrumental aggression is not provoked and is relatively unemotional. Existing aggression paradigms primarily measure reactive aggression, and the laboratory measurement of instrumental aggression has proved challenging. This study modified the competitive reaction time task to include an entire block of instrumental aggression trials, in addition to the standard block of reactive trials, in effort to create a single paradigm within which both reactive and instrumental aggression can be measured in the laboratory. Psychopathy is a …
Factors Associated With Immediate Postnatal Care In Lao People's Democratic Republic: An Analysis Of The 2017 Lao People's Democratic Republic Multiple Indicator Cluster Survey, Tressa Quayle
UNLV Theses, Dissertations, Professional Papers, and Capstones
Purpose: This study aimed to identify potential factors associated with immediate postnatal care in Laotian women. Background: The World Health Organization recognizes that approximately half of all maternal deaths occur in the immediate postnatal period or 24 hours after birth. One crucial step to improving maternal mortality is a postnatal check during the first 24 hours following birth. Forty-seven percent of Lao women aged 15-49 who delivered a baby in the last two years received a postnatal health check in the first two days after delivery. Of these, 46.5% of postnatal checks were conducted prior to discharge from the facility …
Metabolic Syndrome And Associated Factors Among Hispanic Americans, Shannon L. Richard
Metabolic Syndrome And Associated Factors Among Hispanic Americans, Shannon L. Richard
UNLV Theses, Dissertations, Professional Papers, and Capstones
Metabolic syndrome (MetS) is a cardiometabolic condition that may develop into cardiovascular disease and type 2 diabetes mellitus. Early recognition and associated treatment of MetS can help detour disease. Lifestyle factors, sleep-disordered breathing, and psychological well-being influence the development of MetS; electrocardiogram abnormalities are associated with MetS. Hispanics living in the United States are particularly vulnerable to MetS. Although MetS is well-identified in Americans of Hispanic ethnicity, the current literature evaluating protective and contributory factors among Hispanic gender-ethnic subgroups is inconsistent and incomplete. This study aimed to examine the relationships between MetS and select health and lifestyle factors among seven …
Effects Of Patellofemoral Pain On Central Activation And Function Of The Gluteus Medius Muscle In Physically Active Females, Michelle Samuel
Effects Of Patellofemoral Pain On Central Activation And Function Of The Gluteus Medius Muscle In Physically Active Females, Michelle Samuel
UNLV Theses, Dissertations, Professional Papers, and Capstones
Patellofemoral pain (PFP) is the most common knee injury among runners, military personnel, adolescents and recreationally active persons. PFP commonly presents as diffuse pain across the anterior knee that increases with activities such as running, squatting, and walking up and down stairs. Nearly 75% of patients with PFP either alter or completely stop physical activity as a result of the pain. There are numerous mechanisms that contribute to PFP symptoms; such as muscle weakness, abnormal joint mechanics and abnormal joint stress, which make it difficult to successfully treat. In addition, PFP may lead to patellofemoral joint (PFJ) osteoarthritis, a debilitating …
Mesozoic Sevier Thrusts Overprinted By Miocene-Quaternary Left-Lateral Deformation: Structures And Tectonism Of The Kane Springs Wash Region, Nevada, Andrew Reid
UNLV Theses, Dissertations, Professional Papers, and Capstones
Recognizing how rifts develop through space and time is vital to enrich our understanding of continental breakup. Rifts are commonly segmented by transfer or accommodations zones that form as the rift develops due to differences in the onset, direction, magnitude, or rates of extension on either side of the transfer or accommodation zone. The Basin and Range province is a wide rift where Cenozoic extension overprints and exposes earlier Mesozoic Sevier fold-thrust belt shortening structures. This exposure allows Sevier thrust correlations between individual mountain ranges and use of these shortening structures to study rift segmentation by strike-slip transfer faults. The …
Measuring Impacts And Vibrations On A Volumetric Modular House During Transportation, Seung Ho Song
Measuring Impacts And Vibrations On A Volumetric Modular House During Transportation, Seung Ho Song
UNLV Theses, Dissertations, Professional Papers, and Capstones
The U.S. construction industry is experiencing an increase in demand for further implementation of modular construction due to the significant productivity and project cost-reducing benefits it provides. However, there exist challenges with the modular method, and many of them are well covered by previous studies, except for the effects of transportation-induced impact/vibration on volumetric modules. A previous study examined the effects of transportation-induced impact/vibration on a timber-framed module and identified some valuable findings. But, it did not explore other types of modules, height considerations, and the differences in the magnitude of impact/vibration due to different module maneuvers on the road. …
Comparing Forgetting Rates Between Pattern Separation And Item Recognition, Rhiannon N. Soriano Smith
Comparing Forgetting Rates Between Pattern Separation And Item Recognition, Rhiannon N. Soriano Smith
UNLV Theses, Dissertations, Professional Papers, and Capstones
Recent theories of forgetting posit that hippocampally-based memory representations are more prone to be forgotten due to decay, while extra-hippocampal representations are more likely to be forgotten due to interference (Hardt, Nader, & Nadel, 2013; Sadeh & Pertzov, 2020). The current study examined this hypothesis by comparing the rate of forgetting between pattern separation, a hippocampally-based process, and item recognition, a process that is reliant on both hippocampal and extra-hippocampal structures. It was hypothesized that pattern separation would display more forgetting due to decay because it is a hippocampally-based process, while item recognition would display more forgetting due to interference …
Bayesian Nonparametric Regression Models For Insurance Claims Frequency And Severity, Mostafa Shams Esfand Abadi
Bayesian Nonparametric Regression Models For Insurance Claims Frequency And Severity, Mostafa Shams Esfand Abadi
UNLV Theses, Dissertations, Professional Papers, and Capstones
The prediction of future insurance claims frequency and severity is one of the most important problems in actuarial science. Such predictions help the actuary set insurance premiums based on observed risk factors, or covariates. Accuracy of these predictions is important from the point of view of both the insurance company as well as the insured customer. Typically, actuaries use parametric regression models to predict claims based on the covariate information. Such models assume the same functional form tying the response to the covariates for each data point. These models are not flexible enough and fail to accurately capture at the …
Development And Application Of A Safety Index For Transit Stops: A Case Study From Las Vegas, Nevada, Rithesh Shivuni
Development And Application Of A Safety Index For Transit Stops: A Case Study From Las Vegas, Nevada, Rithesh Shivuni
UNLV Theses, Dissertations, Professional Papers, and Capstones
This research developed a methodology to evaluate safety proximate to transit stops through a Safety Index, identified key factors associated with fatal crashes proximate to bus transit stops, and illustrated the applications of these using a case study based on the Las Vegas metropolitan area in Nevada, USA. The methodology is based on motor vehicle crashes that involve pedestrians recorded in the proximity of transit stops, and the severity of the crash outcomes. It focused on crashes which involved pedestrians that occurred within walking distances of individual transit stops. The severity of the crash outcomes was classified based on the …
Examination Of The Relationship Between Loneliness And Binge Eating Symptoms, Kimberly Stevens
Examination Of The Relationship Between Loneliness And Binge Eating Symptoms, Kimberly Stevens
UNLV Theses, Dissertations, Professional Papers, and Capstones
Loneliness is implicated in several mental health conditions and may also be linked to eating pathology, like binge eating symptoms (e.g., loss-of-control eating). However, the pathways by which loneliness might be associated with binge eating symptoms are less well understood. Preliminary evidence suggests perceived stress may be a key explanatory pathway. Specifically, perceived stress mediates the impact of loneliness on other mental health outcomes and is associated with increased risk of binge eating symptoms. This study investigated relationships between loneliness, perceived stress, and binge eating symptoms and tested whether heightened levels of binge eating was accounted for by increases in …
The Impact Of Alzheimer Disease On Semantic Knowledge, Maileen G. Ulep
The Impact Of Alzheimer Disease On Semantic Knowledge, Maileen G. Ulep
UNLV Theses, Dissertations, Professional Papers, and Capstones
The research furthers the understanding of the impact of Alzheimer disease (AD) on cognition and the organization of semantic knowledge in the brain, which might contribute to the development of diagnostic and staging tools, and interventions to palliate cognitive deficits. The disruption of semantic knowledge in AD is well documented in the literature. Much of the existing research focuses on the general impact AD has on semantic knowledge. This study explores the impact of AD on specific domains of knowledge, chiefly, living kinds and artifacts, critical to ordinary functioning. The content, organization and structure of the investigated domains of knowledge …
College Students’ Attitudes Toward Condom Use In Pornography: Associations With Sexual History, Sexually Transmitted Infections, And Pornography Use, Bailey M. Way
UNLV Theses, Dissertations, Professional Papers, and Capstones
The depiction of condomless sex in pornography has significant public health implications for adult film (pornography) actors and potentially for its consumers. Previous research suggests that most consumers of pornography are in favor of condom use in pornography; however, available research on attitudes toward condom use in pornography has surveyed mostly White, male, American undergraduate students. Currently, there is a need to explore viewers’ attitudes toward condom use in pornography among women and racially/ethnically diverse individuals. The current study investigated United States (US) college students’ attitudes toward condom use in pornography using the Pornography Actors’ Condom Use Attitudes Questionnaire (PACUAQ). …
Real–Time Semantic Segmentation For Railway Anomalies Analysis, Paul Stanik Iii
Real–Time Semantic Segmentation For Railway Anomalies Analysis, Paul Stanik Iii
UNLV Theses, Dissertations, Professional Papers, and Capstones
In the past few years, computer vision has made huge jumps due to deep learning which leverages increased computational power and access to data. The computer vision community has also embraced transparency to accelerate research progress by sharing open datasets and open source code. Access to large scale datasets and benchmark challenges propelled and opened the field. The autonomous vehicle community is a prime example. While there has been significant growth in the automotive vision community, not much has been done in the rail domain. Traditional rail inspection methods require special trains that are run during down time, have sensitive …