Digital Commons Network^™

Improved Hydrologic Modeling And Geophysical Imaging Of Critical Zones: Incorporating Structural And Temporal Constraints, Hang Chen

Boise State University Theses and Dissertations

The Earth's critical zone (CZ) is a life-sustaining layer extending from the canopy of the tree to the bottom of the active groundwater circulation, providing valuable resources to terrestrial life, including nutrients, minerals, and fresh water. There are many challenges in studying various processes within and the function of the CZ. This dissertation addresses two common challenges in studying the CZ hydrology and watershed function, which are critical for a predictive understanding of the water dynamics in mountainous terrain and for an informed management of future water resources under rapid climate change. These challenges include (1) accurate quantification of hydrological …

Verifying The Taxonomic Validity And Resolving The Subspecific Boundaries Of The Lomatium Foeniculaceum Complex, Daniel Botello

Boise State University Theses and Dissertations

Plant species in western North America historically have been delimited using morphological differences and geographic distribution of the species’ populations. Historically, the subspecies rank was relegated to populations that are geographically coherent but morphologically intergradient at areas of sympatry, resulting in doubts on the taxonomic validity and usefulness of the subspecific rank. The Lomatium foeniculaceum complex of the Perennial Endemic North American clade (PENA) of Apiaceae is present across much of the Great Plains and Intermountain Region, and as far north as northeast British Columbia. It is comprised of five subspecies and is the most widely distributed complex in the …

Cyanide Abundance Of Highly Aqueously Altered Cm Chondrites: Insight For Asteroid Bennu, Rachel A. Reichow

Boise State University Theses and Dissertations

Asteroids, and the meteorites that come from them, retained the composition of the early Solar System and can give us insight to the processes that lead to the origin of life. The current NASA mission, OSIRIS-REx, has returned asteroid samples from the near-Earth asteroid Bennu. This asteroid is thought to be similar in composition to highly aqueously altered meteorites including CM1 and CM1/2 meteorites. Cyanide is thought to be an important molecule for prebiotic chemistry. Simple cyanide salts would have been the most accessible form of cyanide for reactions to occur; however, they may have recombined to form different metal-cyanide …

The Anthropology Of Self: How Achieving Greater Self-Concept Clarity Impacts Individual Behavior, Relationships, And Cooperation, Thomas Anthony Voccola

Boise State University Theses and Dissertations

This thesis investigates the Passion & Purpose™ experience as a model for enhancing self-concept clarity (SCC) and its influence on personal and professional life. Traditional theories suggest self-concept forms unpredictably, possibly leading to pathologies that undermine well-being and interpersonal connections. Contrary to this, the study argues that deliberate interventions like Passion & Purpose™ can significantly improve SCC, promoting better mental, emotional, and relational health.

Adopting an anthropological perspective, which is rare in SCC research, this study uses ethnographic methods to delve deeper into self-knowledge. Passion & Purpose™, already implemented in various U.S. organizations, presents an innovative method for developing SCC. …

From Metabolites To Flux: Understanding Cellular Metabolism, Cale Thornton

Boise State University Theses and Dissertations

Metabolomics is a well-established field with the first published mention of the metabolome in 1998 with numerous applications encompassing food science, microbiology, forensics, plant biology, and many others. In this thesis, I will describe how we utilized Nuclear Magnetic Resonance (NMR) spectroscopy to aid in our understanding of topics ranging from method development, biomass conversion, to food science. In the first topic, we will probe the challenges and successes in understanding how to monitor the real-time metabolism of living cells by NMR. Cells larger can ca. 0.2 μM in diameter tend to settle out of suspension within minutes. Pluronic F-127 …

Agricultural Irrigation Water Quality In The Lower Boise River Basin: A Quantitative Assessment Of Canal Ecosystem Metabolism And Escherichia Coli Spatiotemporal Variability, Reed Chasmar

Boise State University Theses and Dissertations

Irrigation canals are pervasive in agricultural landscapes. Despite their vast spatial extent and significant volumetric impact on the hydrologic cycle, the role of irrigation canals as intermittent channels within a river network, as well as their various functions (e.g., supporting aquatic ecosystems, transporting microbial communities, altering the carbon cycle), are not well understood. Microbial water quality and aquatic ecosystem metabolism represent two mechanisms to assess stream channels that can provide new insights into the complex dynamics and spatiotemporal patterns that exist in irrigation canals, which has relevance for both human health and for the field of stream ecology. The goal …

Child Sexual Abuse Disclosure: Non-Offending Fathers, Mckayla Marie Harrison

Dissertations

Rates of childhood sexual abuse (CSA) are difficult to track due to the taboo nature and stigma surrounding the topic (McElvaney & Nixon, 2020). To address this nationwide crisis, mental health clinicians are relied upon to educate, assess, and treat accordingly. Yet, despite the ubiquitous nature of CSA, existing research has not yet examined non-offending fathers’ experience, a major support system and means of healing for children. This qualitative phenomenological study sought to capture the descriptions of non-offending fathers with children that have disclosed sexual abuse in an effort to better understand the struggles and needs for these fathers, as …

Practices, Curricula, And Perspectives: Creating Equitable And Inclusive Science Higher Education Classrooms, Victoria Lee Duncan

Dissertations

How can Science, Technology, Engineering, and Mathematics (STEM) faculty create environments where students do not feel marginalized? Changes are necessary to address the historically exclusive climate, systemic oppressive classroom policies, and practices dominated by White, patriarchal, Eurocentric perspectives in many STEM classrooms. Faculty incorporating approaches and practices documented in the literature across time and multiple STEM disciplines can create equitable and inclusive (EI) classrooms. However, the challenge for faculty is consolidating the information to identify fundamental elements necessary for establishing EI classrooms. By synthesizing and cataloging components found in the literature, following a qualitative meta-synthesis framework, the purpose of Project …

A Narrative Inquiry Into The Perceptions Of Counseling Faculty Regarding The Use Of Humor In Clinical Supervision, Ryan Cheuk Ming Cheung

Dissertations

Cheung, Ryan Cheuk Ming. A narrative inquiry into the perceptions of counseling faculty regarding the use of humor in clinical supervision. Published Doctor of Philosophy dissertation, University of Northern Colorado, 2024. Students in counselor preparation programs are required to be clinically supervised by faculty when working with clients. Considering how to help supervisees and positively affect supervision outcomes, one method could be the use of humor by counseling supervisors. Research in the area of humor in counseling supervision is largely missing (Dantzler, 2017; Vereen et al., 2006). A key task in supervision is building a strong working alliance (Bordin, 1983) …

Survival After Ditching In Motorized Aircraft, 1989-2022, Douglas D. Boyd, Volker C. Schick, Catherina Hippler, Jochen Hinkelbein

Publications

INTRODUCTION: Although an unintended aircraft landing on water (referred to as ditching) is a rare event, the potential for occupant injury/fatality increases immediately following the event due to adverse conditions. However, to date, few studies have addressed the subject. Herein, ditching events and post-ditching survival were investigated.

METHODS: Ditchings (1982–2022) in the United States were identified from the National Transportation Safety Board database. Occupant injury severity, aircraft type, pilot experience, flight conditions, and number of occupants were extracted. Poisson distribution, the Chi-squared test (2-tailed), Mann-Whitney U test, and Kruskal-Wallis one-way analysis of variance were employed.

RESULTS: A total of 96 …

The Effect Of Direct Current Stimulation On The Plasticity Of Cerebellar Purkinje Cell, Emily Graves

PCOM Biomedical Studies Student Scholarship

The cerebellum plays an essential role in movement coordination and balance, and its cortex comprises three layers: the granule cell layer, Purkinje cell layer, and molecular layer. The axons of granule cells, parallel fibers, synapse onto the dendrites of the Purkinje cell. Purkinje cells are the primary inhibitory output of the cerebellar cortex to the deep cerebellar nuclei. Damage to the cerebellum or the related pathway can lead to cerebellar ataxia. Cerebellar ataxia can include abnormal extremity movements, eye and gait incoordination, and loss of balance. Non-invasive brain therapy, transcranial direct current stimulation (DCS), has shown potential benefit to patients …

Investigation Of Movement Coordination In Reaching Through The Modulation Of The Cerebello-Thalamo-Cerebral Tract By Cerebellar Tes In Awake Mice, William Johnston

PCOM Biomedical Studies Student Scholarship

Cerebellar ataxia is a neurological disorder that can be genetically or sporadically acquired. Ataxia is the loss of the ability to coordinate the range, rate, force, and direction of movements. Loss of gait stability, and reaching smoothness is progressively seen clinically. The non-invasive brain therapy called transcranial electric stimulation (tES) has been shown to have an impact on the behavior of humans with cerebellar dysfunction. However, the physiological and behavioral effects of tES are not well studied. Quantitative measurements were used in reaching behavior assays with head fixation using normal and ataxic mice before and after tES treatment. Frame by …

Cost-Effectiveness Analysis Of Alternative Screening Strategies For The Detection Of Cervical Cancer Among Women In Rural Areas Of Western Kenya, Christopher Lobin, Elkanah Omenge, Edwin Were, Kapten Muthoka, Kavita Singh, Manuela De Allegri, Konrad Obermann, Magnus Doeberitz, Hermann Bussmann

Obstetrics and Gynaecology, East Africa

While the incidence of cervical cancer has dropped in high-income countries due to organized cytology-based screening programs, it remains the leading cause of cancer death among women in Eastern Africa. Therefore, the World Health Organization(WHO) now urges providers to transition from widely prevalent but low-performance visual inspection with acetic acid (VIA) screening to primary human papillomavirus(HPV) DNA testing. Due to high HPV prevalence, effective triage tests are needed to identify those lesions likely to progress and so avoid over-treatment. To identify the optimal cost-effective strategy, we compared the VIA screen-and-treat approach to primary HPV DNA testing with p16/Ki67 dual-stain cytology …

An Integrated Transformational Teaching Model For Empowering Undergraduate Psychology Students To Cultivate Self-Awareness, Wellness Practices, And Resilient Mindsets During Their Undergraduate Careers, Summerrae L. Arcemont

LSU New Orleans Theses and Dissertations

This Narrative inquiry explored psychology students’ perceptions of self-awareness interventions and wellness training in undergraduate psychology coursework. Participants included seven undergraduate psychology majors who completed a psychology health and wellness course in the Fall 2023 semester at a regional university in the Southeast. Semi-structured interviews were conducted and examined to identify themes in the students’ stories regarding their journeys through the wellness course. The use of reflexive thematic analysis helped determine the following five overarching themes from the data: Roadmap for Navigating Wellness, Group Experience, Newfound Insight, Personal Growth and Transformations, and Moving Forward. The results of this study highlighted …

Exploring Auditory Thalamocortical Pathways In Autism Spectrum Disorder, Caitlin Dyer

LSU New Orleans Theses and Dissertations

Thalamocortical tracts related to language have rarely been examined in autism spectrum disorder (ASD). We examined the medial geniculate nucleus (MGN), Heschl’s gyrus (HG), and planum temporale (PT) volumes, and the connections from MGN to HG and MGN to PT, using MRIs from 39 children with ASD (20 with receptive language impairment, 19 without) and 20 typically developing controls, aged 5-17 years. In children with ASD without language impairment, MGN volume was positively correlated with receptive language scores. Additionally, the thalamus was smaller in children with ASD with language impairment, correlating negatively with receptive language scores in this group. Left …

Blade Design And Validation Of Hydrokinetic Turbine To Harvest Water Current Energy, Setare Sadeqi

LSU New Orleans Theses and Dissertations

The innovative aspect of this research lies in the careful integration of cutting-edge technologies throughout the entire process of designing, fabricating, and testing the carbon fiber propeller for the 3-bladed horizontal axis ocean current turbine (OCT). SolidWorks software played a pivotal role in the initial design phase, enabling a meticulous and precise modeling of the propeller's geometry. The utilization of SolidWorks allowed for a detailed exploration of various design parameters, ensuring that the propeller's structure and form were optimized for performance in ocean current conditions. Moving beyond the realm of virtual design, the choice of carbon fiber as the fabrication …

Moral Dilemmas: A Phenomenological Exploration Of Military Members Experience Of War, Deborah Allsbrook Roth

LSU New Orleans Theses and Dissertations

Due to increasing mental health concerns in combat exposed military members, including posttraumatic stress, there is a commiserate need for improved mental health services. Other mental health concerns include an increasing rate of suicide deaths in military members who have served during Operation Enduring Freedom (OEF), or Operation Iraqi Freedom (OIF). There is a need for mental health counselors to have a more nuanced understanding of the clinical needs of combat exposed military members. In more recent years the construct of moral injury has emerged as a potential explanation for the presentation of certain combat exposed military members. Moral injury …

Chemical Composition, Fate, And Toxicity Of Dissolved Hydrocarbon Oxidation Products In High Latitude Aquatic Environments, Maxwell Louis Harsha

LSU New Orleans Theses and Dissertations

Oil spilled in aquatic environments undergoes abiotic and biotic oxidation processes that produce hydrocarbon oxidation products (HOPs). HOPs rapidly diffuse in the water column, persisting and readily bioavailable to aquatic organisms. Characterizing HOPs is challenging because most of the mixture resides in the unresolved complex mixture (UCM). Understanding of the formation, fate, and toxicity of HOPs in high latitude environments remains limited. This research addresses these gaps through a comprehensive experimental approach, utilizing various analytical techniques including nonvolatile dissolved organic carbon (NVDOC) analysis, ultrahigh-resolution mass spectrometry, tandem mass spectrometry, inductively coupled plasma mass spectrometry, and fluorescence excitation-emission matrix spectroscopy. Additionally, …

Muslim International Students’ Perception Of Islamophobia In Their Immigration Journey To The U.S.: A Case Study, Sheri Beyer

LSU New Orleans Theses and Dissertations

This study serves as an impetus for universities to address improving pre-arrival services and procedures for Muslim international students and a resource for practitioners and lawmakers to examine current policies specifically through the lens of Critical Race and Critical Muslim Theory. Policymakers can examine the effects of Islamophobia on international students and how it affects higher education, communities, and the economies.

Breaking Through: A Study Of Educators In All-Male Classrooms And The Instructional Decisions They Use To Bridge The Gender Academic Achievement Gap, Kelly M. Clark

LSU New Orleans Theses and Dissertations

In reviewing academic achievement gaps across United States school districts, educational research samples show deviations between males and females with males statistically outperforming females in math while females typically outperform males in reading and language arts. With strict American educational policies set in place to promote equality and equity in the classroom, research and long-term results on the impact and possible benefits of male, single-sex classrooms in the American educational system are limited. This study seeks to explore educators’ best practices for teaching male students and effective strategies to cater to their different needs. By qualitatively studying the experiences of …

Investigation On The Effects Of Biofouling On The Boundary Layer, Adam N. Bacon

LSU New Orleans Theses and Dissertations

This study is an investigation of the effect of biofouling on the boundary layer of a flat plate and a NACA 4-digit series foil. Three identical hydrofoils made of resin were placed in the Gulf of Mexico at Grand Isle, Louisiana, and observed and analyzed by marine biologists at the University of New Orleans for their species composition. The resulting biofouling that grew was primarily made up of barnacles and bryozoans. The foils were submerged in an open channel flume at zero incidence and subjected to a series of experiments whose arc-length Reynolds numbers ranged from approximately 13000 to 32000. …

Development And Validation Of A Rule-Based Algorithm To Identify Periodontal Diagnosis Using Structured Electronic Health Record Data, Bunmi Tokede, Ryan Brandon, Chun-Teh Lee, Guo-Hao Lin, Joel White, Alfa Yansane, Xiaoqian Jiang, Elsbeth Kalenderian, Muhammad Walji

Faculty, Staff and Student Publications

AIM: To develop and validate an automated electronic health record (EHR)-based algorithm to suggest a periodontal diagnosis based on the 2017 World Workshop on the Classification of Periodontal Diseases and Conditions.

MATERIALS AND METHODS: Using material published from the 2017 World Workshop, a tool was iteratively developed to suggest a periodontal diagnosis based on clinical data within the EHR. Pertinent clinical data included clinical attachment level (CAL), gingival margin to cemento-enamel junction distance, probing depth, furcation involvement (if present) and mobility. Chart reviews were conducted to confirm the algorithm's ability to accurately extract clinical data from the EHR, and then …

The Effect Of An Occupational Balance Educational Module On Life Satisfaction And Occupational Balance For University Students, Unique Bowden

UNLV Theses, Dissertations, Professional Papers, and Capstones

Engaging in a variety of occupations daily can support university students in feeling a sense of balance and satisfaction in their lives. This study aimed to evaluate the effectiveness of an occupational balance education module on improving the life satisfaction and occupational balance of university students ages 18-22 in a public university in the southwest region of the United States. Five participants were recruited using convenience sampling from a student support services program. A four-part education module was provided using a one-group pretest posttest quasi-experimental design, which included education on occupational balance, barriers and supports to occupational balance, strategies to …

Black Women Educational Leaders In Pk-12 Public Education: A Multiple Case Study On The Double Consciousness Of Black Women Educational Leadership In Southwestern United States, Malena Baizan

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation examined the stories of Black Women Educational Leaders (BWEL) in PK-12t public education and their double consciousness as expressed through their leadership. The focus of this study was BWEL’s counternarratives as leaders within a system built upon systemic racism and oppression. Their experiences as Black Women Educational Leaders in PK-12 in a school district in which most school administrators are white, but most of the student body is Black and Brown were highlighted and centered to shed light on how the double consciousness of Black women informs their leadership. Utilizing Critical Race Feminism as the theoretical framework with …

An Examination Of The Teaching And Learning Of Resonance In General Chemistry I And Organic Chemistry I Using Variation Theory, Sabrina Barakat

UNLV Theses, Dissertations, Professional Papers, and Capstones

Resonance is a fundamental chemistry concept first introduced to students in General Chemistry I, reintroduced in Organic Chemistry I, and then utilized throughout other higher-level chemistry courses. A molecule or ion can be said to exhibit resonance when it can be represented by two or more chemical structures (i.e., Lewis structures) that differ only in their arrangement of electrons. In other words, resonance represents the electronic structure of a molecule or ion when a single Lewis structure does not adequately depict the true distribution of electrons. The molecule or ion is best represented as a combination of all of the …

Differential Expression Of Microrna Mir-145 And Mir-155 Downstream Targets In Oral Cancers Exhibiting Limited Chemotherapy Resistance, Conner Belnap

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: New evidence has suggested that non-coding microRNAs play a significant role in mediating and modulating chemotherapy resistance, particularly among oral cancers. One recent study found that the expression of miR-145 and lack of miR-155 expression strongly correlated with a limited chemotherapy resistance to Cisplatin, 5-Fluorouracil and Paclitaxel , although the mechanism(s) responsible for these observations remain unidentified.

Methods: Using commercially available cell lines of oral squamous cell carcinoma (OSCC), RNA was isolated using phenol:chloroform extraction. The isolated RNA was converted into cDNA by reverse transcription and subsequently screened for the presence or absence of downstream targets of miR-145 and …

Seasonal Climate And Environmental Conditions Associated With Physiological Variations Of Southwestern United States Pines, Taylor Brewer

UNLV Theses, Dissertations, Professional Papers, and Capstones

Juvenile and adult conifers in the southwestern United States are vulnerable to a range of different abiotic and biotic factors, yet it is unclear how their stress tolerance varies across environments. Predicted increases in the frequency and intensity of disturbance as well as greater climate and weather variability across the region highlight the potential for differential physiological responses across tree species and populations. This thesis focuses on two physiologic mechanisms, hydraulic vulnerability and mortality, that could be altered by climate change in two broadly distributed southwestern United States conifers: ponderosa pine and pinyon pine.

In chapter 2, I measured the …

Development And Usage Of Analytic Tools And Recommendations For Validation And Reliability Studies Using Consumer-Grade Wearable Technology, Bryson Carrier

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: Wearable technology is increasingly utilized across various fields, yet the validity and reliability of the physiological data these devices provide are often unverified due to a lack of rigorous testing standards.

Purpose: This dissertation contains three primary works, and therefore multiple purposes. The purpose of the first project (Chapter 2) is to introduce a new risk of bias assessment tool, specifically for assessing methodological quality and the risk of bias in validity and reliability studies using wearable technology, with a focus on consumer-grade wearable technology. The purpose of the second project (Chapter 3) was to perform a systematic review …

The Influence Of Bihemispheric Transcranial Direct Current Stimulation On Muscle Fatigue, Ananya Singh Chauhan

UNLV Theses, Dissertations, Professional Papers, and Capstones

Unilateral transcranial direct current stimulation (tDCS) using two electrodes placed over the primary motor cortex (M1) and the contralateral supraorbital (SO) region (M1-SO montage) has been shown to decrease the progression of muscle fatigue. The primary purpose was to determine the impact of bihemispheric tDCS (bi-tDCS) applied over the left and right M1s (bi-tDCS) on the time to task failure (TTF) of a precision-grip task. The study implemented a double-blind, randomized, SHAM-controlled, within-subjects design. A total of 20 participants performed two experimental sessions (bi-tDCS and SHAM conditions) separated by a one-week washout. During each experimental session, a fatiguing isometric contraction …

The Influence Of Bilateral Dual Source Transcranial Direct Current Stimulation On The Progression Of Muscle Fatigue, Eliza Clinton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Transcranial direct current stimulation (tDCS) applied unilaterally to the primary motor cortex (M1) can significantly prolong the time to task failure (TTF) of a fatiguing contraction. The primary purpose of the study was to examine the influence of bilateral dual source tDCS (dstDCS) applied over the left and right M1s (ds-tDCS) on the TTF of a precision grip task. This was accomplished through the utilization of a double-blind, randomized, SHAM-controlled, within-subjects design. Fourteen participants completed two experiments (ds-tDCS and SHAM stimulation conditions) with a seven-day washout period between sessions. Each experiment involved the performance of a sustained isometric fatiguing contraction …