Digital Commons Network^™

Establishing Performance Criteria For Evaluating Watershed-Scale Sediment And Nutrient Models At Fine Temporal Scales, Aayush Pandit, Sarah Hogan, David Tyler Mahoney, William I. Ford, James F. Fox, Christopher Wellen, Admin Husic

Civil Engineering Faculty Publications

Watershed water quality models are mathematical tools used to simulate processes related to water, sediment, and nutrients. These models provide a framework that can be used to inform decision-making and the allocation of resources for watershed management. Therefore, it is critical to answer the question “when is a model good enough?” Established performance evaluation criteria, or thresholds for what is considered a ‘good’ model, provide common benchmarks against which model performance can be compared. Since the publication of prior meta-analyses on this topic, developments in the last decade necessitate further investigation, such as the advancement in high performance computing, the …

Exploratory Analysis Of Gait Mechanics In Farmers, Mariana V. Jacobs, Kate N. Jochimsen, Jody L. Clasey, Michael A. Samaan

Kinesiology and Health Promotion Faculty Publications

Farmers may be at a higher risk of developing hip osteoarthritis (OA) due to the high demands of their occupation. To the authors’ knowledge, the gait patterns of farmers that may be associated with hip joint degeneration have yet to be analyzed. Therefore, this study compares gait mechanics between farmers and non-farmers (controls). It is hypothesized that farmers would exhibit altered lower extremity joint mechanics during walking when compared to matched controls. This exploratory study included five farmers and five sex-, age-, and body mass index (BMI)-matched controls. A 3D gait analysis was performed while study participants walked at a …

Assessment Of Hip Joint Mechanics During Walking In People With Marfan Syndrome, Mariana V. Jacobs, Justin Melan Pol, Aaron D. Fain, Jody L. Clasey, Brecca M. M. Gaffney, Christopher J. Mclouth, Mary B. Sheppard, Michael A. Samaan

Kinesiology and Health Promotion Faculty Publications

Background: Marfan syndrome (MFS) is an autosomal dominant connective tissue disorder and is associated with muscle dysfunction. Individuals with MFS exhibit quadriceps weakness, hip joint pain, and an increased incidence of hip osteoarthritis (OA) compared to the general population, yet the underlying biomechanical factors associated with these poor hip-related outcomes are not well understood.

Research Question: The purpose of this study was to assess the effects of MFS on gait mechanics and to determine the relationship of gait mechanics with hip-related outcomes within the MFS group. Methods: Eighteen people with MFS and 18 healthy, asymptomatic controls underwent 3D gait analysis. …

A Comprehensive Evaluation Of Thigh Mineral-Free Lean Mass Measures Using Dual Energy X-Ray Absorptiometry (Dxa) In Young Children, Trey R. Naylor, Mariana V. Jacobs, Michael A. Samaan, Laura C. Murphy, Douglas J. Schneider, Margaret O. Murphy, Hong Huang, John A. Bauer, Jody L. Clasey

Kinesiology and Health Promotion Faculty Publications

This study aimed to (1) demonstrate the intra- and interrater reliability of quadriceps (QUADS) and hamstring (HAMS) mineral-free lean (MFL) mass measures using DXA scanning, (2) determine the association of total thigh MFL mass measures with MFL mass measures of the hamstrings and quadriceps combined and (3) analyze the association between total thigh MFL mass and total body MFL mass measures. A total of 80 young children (aged 5 to 11 yrs) participated and unique regions of interest were created using custom analysis software with manual tracing of the QUADS, HAMS, and total thigh MFL mass measures. Repeated-measure analysis of …

An Approach To Quantifying The Lifecycle Sustainability Impacts Of Tungsten Carbide Tools, Gatewood Arnold, Julian Polizzi, Syed Ibn Mohsin, Daniel Carnesi, Julius Schoop, Fazleena Badurdeen

Mechanical Engineering Faculty Publications

Tungsten carbide cutting tools are widely used for their high machining performance and low cost. However, their cost does not currently reflect the material rarity, environmental costs, nor societal costs associated with their production. Critically, embodied energy makes a sizeable contribution to the total lifecycle energy consumption. This study quantifies the true triple bottom line cost of the tools with respect to established sustainability metrics by leveraging cross-disciplinary insights from the product, process, and system levels. Based on the adjusted cost, a comparative analysis of the cutting tool sustainability on the profitability of a nickel-based superalloy machining process was carried …

A Multi-Scale Finite Element Method For Investigating Fiber Remodeling In Hypertrophic Cardiomyopathy, Mohammad Mehri, Kenneth S. Campbell, Lik Chuan Lee, Jonathan F. Wenk

Mechanical Engineering Faculty Publications

A significant hallmark of hypertrophic cardiomyopathy (HCM) is fiber disarray, which is associated with various cardiac events such as heart failure. Quantifying fiber disarray remains critical for understanding the disease’s complex pathophysiology. This study investigates the role of heterogeneous HCM-induced cellular abnormalities in the development of fiber disarray and their subsequent impact on cardiac pumping function. Fiber disarray is predicted using a stress-based law to reorient myofibers and collagen within a multiscale finite element cardiac modeling framework, MyoFE. Specifically, the model is used to quantify the distinct impacts of heterogeneous distributions of hypercontractility, hypocontractility, and fibrosis on fiber disarray development …

Sex-Specific Roles Of The Adipocyte Mineralocorticoid Receptor In Obesity And Early Life Stress, Meghan B. Turner

Theses and Dissertations--Pharmacology and Nutritional Sciences

Obesity is a burgeoning health epidemic caused by chronic overnutrition and exacerbated by genetic, environmental and developmental factors. The adipocyte mineralocorticoid receptor (MR), a transcriptionally active nuclear receptor, is speculated to contribute to metabolic dysfunction in the obese state. MR expression is increased in obese adipose tissue, and MR modulates the expression of fat-derived hormones such as leptin and adiponectin. In women, obesity can be exacerbated by early life stress, such as adverse childhood experiences (ACEs). Studies show that women display a positive association between cumulative ACE exposures and increased body mass index. Previously, we demonstrated that maternal separation and …

Nothing Short Of Superheroic: A Quantitative Study Of Lifetime Exposure To Superhero Comic Book Media As A Predictor Of Attitudes Towards Diversity, Equity, And Inclusion, Michael Nguyen

Theses and Dissertations--Educational Leadership Studies

This dissertation examined the relationship between lifetime exposure to superhero comic book media and attitudes toward diversity, equity, and inclusion (DEI). Drawing on theories of identity formation—transitional objects, parasocial relationships, and cultivation theory—it investigated whether engagement with superhero narratives predicted DEI attitudes. Using quantitative methods, data from 499 U.S. adults were collected via Qualtrics. Two instruments were used: the Lifetime Superhero Comic Book Media Exposure Scale (LSES) and the Intolerant Schema Measure (ISM), which assessed prejudice across race, gender, sexuality, class, age, and religion. Multiple linear regression revealed that superhero media exposure significantly predicted ISM scores (B = 0.118, …

Exploring The Collective Efficacy Of Elementary Special Education Teachers And Its Relationship To Distributed Leadership, Emma L. Jones

Theses and Dissertations--Educational Leadership Studies

This study examined the relationship between collective teacher efficacy (CTE) and distributed leadership practices among elementary special education teachers. CTE reflects teachers’ shared belief in their collective ability to improve student outcomes, while distributed leadership emphasizes shared decision-making, collaboration, and shared responsibility across school personnel.

Using a sequential explanatory mixed-methods design, the study combined survey data from the Collective Teacher Belief Scale with follow-up interviews. Survey results from 31 special education teachers indicated moderate to high levels of CTE, with slightly greater confidence in managing student behavior than in delivering instruction. Interviews with teachers across varying CTE levels provided deeper …

Using The Mand-Model Intervention Strategy To Increase Verbal Or Augmentative And Alternative (Aac) Two-Word Utterances For Requesting Items In A Naturalistic Setting, Morgan A. Williams

Theses and Dissertations--Education Sciences

This project examined the effectiveness of the mand-model milieu teaching strategy for increasing two-word verbal or augmentative and alternative communication (AAC) requests in a classroom. Three students participated. All students demonstrated increased mean length of utterance in words (MLUw) when requesting preferred items. For all students, correct two-word requests improved following a model prompt. Two students showed limited independent requesting following only a mand, while one student met criterion for consistent independent requesting. Other observed outcomes included improved communicative confidence, reduced frustration behaviors, and increased AAC acceptance and generalization across settings for one participant. Findings suggest that the mand-model strategy …

Effect Of Walking With An Active Ankle Exoskeleton On The Biomechanical Responses Of The Lumbar Spine, Jose E. Rubio, Junfei Tong, Aravind Sundaramurthy, Anup Pant, Sridevi Nagaraja, Meredith K. Owen, Michael A. Samaan, Brian W. Noehren, Jaques Reifman

Physical Therapy Faculty Publications

Objective: Musculoskeletal injuries pose a health threat to U.S. Service members. In particular, the physical demands of walking and running with load carriage contribute to a high incidence of musculoskeletal injuries of the lower back. Active ankle exoskeleton devices are promising technologies that may help mitigate the impact of load carriage on the incidence of these injuries. However, the safe extended use of these devices requires an understanding of their beneficial or detrimental effects on the lumbar spine. In this pilot study, we investigated the impact of walking with an ankle exoskeleton device on lumbar biomechanical responses.

Methods: We collected …

Comparison Of Machine Learning Models For Colon Cancer Survival: Predictive Modeling Approach, Reuben Adatorwovor, Motolani E. Ogunsanya, Bin Huang, Richard Charnigo, Olufunmilola Abraham

Biostatistics Faculty Publications

Background: Colon cancer is a leading cause of cancer-related deaths worldwide, with survival influenced by risk factors, treatment type, and patient characteristics. Traditional statistical models, such as Kaplan-Meier curves, have been widely used to estimate survival probabilities. However, these models often have difficulty handling complex interactions, covariates, and nonlinear relationships between risk factors. Recently, machine learning (ML) techniques have emerged as promising tools for improving survival prediction by handling large covariates and capturing complex patterns.

Objective: This study compares several ML models to accurately estimate colon cancer survival by leveraging data from the Kentucky Cancer Registry. By identifying key risk …

Disentangling The Inverse Relationship Between Cancer And Alzheimer’S Or Parkinson’S Disease: A Systematic Review On Mendelian Randomization Studies, Khine Zin Aung, Su Su Zin, Xian Wu, Zin W. Myint, Shama D. Karanth, Steven Estus, Christopher M. Norris, Peter T. Nelson, David W. Fardo, Erin L. Abner, Yuriko Katsumata

Biostatistics Faculty Publications

Introduction

Although studies have reported an inverse relationship between cancer and neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD), findings remain inconsistent. Observational studies are limited by survival bias and reverse causation. To better understand the relationship, we conducted a systematic review of Mendelian randomization (MR) studies examining both directions—assessing cancer as a risk factor for AD or PD, as well as AD or PD as exposures influencing cancer risk.

Methods

We systematically reviewed MR studies investigating the causal relation between cancer and either AD or PD. Cancer could be specified as either an exposure or an …

Incident Atherosclerotic Cardiovascular Disease Among Veterans By Gender Identity: A Cohort Study, Carl G. Streed Jr., Meredith S. Duncan, Kory R. Heier, T. Elizabeth Workman, Lauren B. Beach, Guneet K. Jasuja, Hill L. Wolfe, Landon D. Hughes, John R. O’Leary, Melissa Skanderson, Joseph L. Goulet

Biostatistics Faculty Publications

Background: Transgender and gender diverse (trans) populations are at elevated risk for atherosclerotic cardiovascular disease (ASCVD).

Objective: Measure the association of gender identity and gender-affirming hormone therapy (GAHT) with ASCVD outcomes.

Design: Cohort study.

Participants: Over 1 million veterans receiving care in the Veterans Health Administration.

Main Measures: Gender identity was identified via a validated natural language processing (NLP) algorithm. Incident ASCVD (acute myocardial infarction, ischemic stroke, or revascularization after the baseline date) was identified via International Classification of Diseases diagnosis codes among veterans without prevalent ASCVD. We calculated sample statistics stratified by gender identity and used Cox proportional hazard …

Minority In Baroque Trumpet Repertoire: Minor-Key Literature For Baroque Trumpet, Wing Heng Victor Yuen

Theses and Dissertations--Music

The repertoire for trumpet in the Baroque era is overwhelmingly in major keys for obvious reasons. As natural trumpet is limited by design to play the notes of the harmonic series, most players have little access to sonorities outside the major scale and arpeggios within the series without the help of technical innovations such as the slide, and much later, vent-holes. Baroque trumpet makers built valveless natural trumpets, which are limited by design to play the notes of the harmonic series. Since the fundamental physics limit the musical notes available to the natural trumpet, minor key is not an essentially …

Examples Of Storytelling In Tan Dun’S The Banquet Piano Sonata, Ni Zhan

Theses and Dissertations--Music

The Banquet is a 2006 Chinese martial arts film directed by Feng Xiaogang. Chinese-American composer Tan Dun was invited to create the film's original soundtrack. In 2016, Tan adapted the music from the soundtrack into a four-movement piano sonata, also titled The Banquet, using melodies from the original film score. This document examines The Banquet Piano Sonata’s connection to the film’s narrative. It explores ways in which the storytelling of the film is used in the sonata; this is accomplished through three key aspects depicted in the music: culture, atmosphere, and inner emotions.

Schubert Lieder For Solo Piano: From Liszt Transcriptions To An Original Adaptation, Changpeng Ti

Theses and Dissertations--Music

This document investigates Franz Liszt’s transcriptions of Schubert Lieder. Between 1838 and 1846, Liszt transcribed 56 songs (including standalone works and song cycles) by Franz Schubert into solo piano pieces. This document discusses compositional devices used in Liszt’s transcriptions and their relationship to Schubert’s vocal and piano writing as well as the original poetic text. Following the discussion on Liszt transcriptions, I present my own transcription of Schubert’s Im Frühling, D. 882, as an experiment in adapting vocal and poetic nuances into a solo piano piece inspired by the Liszt transcriptions.

Teacher Perceptions Of A Mindful-Based Social Emotional Group Drumming Curriculum: A Collective Case Study, Kristin Lewis

Theses and Dissertations--Music

Educational researchers have discovered a connection between educator and student well-being. Educators need to cultivate these skills to effectively model social emotional learning (SEL). However, there is a shortage of resources for elementary general music educators that intentionally embed social emotional competencies in tandem with adhering to the National Core Arts Standards.

Therefore, the purpose of this study was to examine elementary music educators’ perceptions of a Mindfulness-Based Social Emotional Learning (MBSEL) group drumming curriculum and its impact on their own and their students’ social emotional competencies (SECs). The research questions were: (1) What are elementary music educators’ perceptions of …

Paul Bowles’ Blue Mountain Ballads For Wind Octet And Solo Voice: A Transcription Of A Song Cycle Using The Instrumentation Of Stravinsky’S Octet , Cleveland P. Forrester

Theses and Dissertations--Music

Blue Mountain Ballads (1946), by Paul Bowles, is a song-cycle and setting of four poems by Tennessee Williams who was the composer's friend and mentor. The work has long held a place in the vocal repertoire. Bowles’ unique harmonic language, wide accompanimental range and the use of jazz idiom provide a unique opportunity for the music to be re-cast for wind instruments. Furthermore, chamber music makes up most of Bowles’ musical output as a composer, so using small instrumental forces seemed an appropriate medium to re-orchestrate this song cycle.

The purpose of this document is 1) to provide a detailed …

A Performance Pracitce Guide To Selected Cornet/Trumpet Excerpts From Wind Band Marches, Adiel P. Najera

Theses and Dissertations--Music

This dissertation seeks to illuminate a long-overlooked area in music and education. Wind band marches are part of a genre that has perhaps received less scholarly treatment when compared to the trumpet parts of orchestral, jazz, and popular music. This guide aims to fill the gap in information available for cornet/trumpet players in wind band settings.

This treatise will provide knowledge including a brief background information, marches in teaching and performing, insights from interviews with current and retired military trumpeters & current and retired music educators. Additionally, the document features excerpts with detailed performance practice and a list of renowned …

James M. David’S Ghosts Of The Old Year: A Formal Analysis And Instructional Guide, Brian P. Froedge Dr.

Theses and Dissertations--Music

James David’s Ghosts of the Old Year (2016) is a significant work for wind ensemble which was performed at the American Bandmasters Association Convention in 2019 by the Colorado State University Wind Ensemble under the direction of Rebecca Phillips and at the 2019 Texas Music Educators Association Convention by the North Texas Wind Symphony under the direction of Eugene Migliaro Corporon. The piece was recorded by the North Texas Wind Symphony on the album titled noteworthy. Ghosts of the Old Year has also been performed by such prestigious ensembles as the University of Illinois Wind Orchestra, the University of Florida …

Anatomical Literacy And Body Mapping In Flute Performance: Strategies For Addressing And Preventing Upper Extremity Injuries, Lauren E. Wiedemer

Theses and Dissertations--Music

This document investigates the benefits of incorporating the study of anatomy and Body Mapping into flute performance, specifically focusing on addressing and preventing injuries related to the upper extremities. As the physical demands on musicians continue to grow, this research advocates for recognizing flutists as "musical athletes.” It highlights the importance of anatomical literacy and somatic awareness in sustaining performance longevity. The practical applications of Body Mapping are explored in detail and presents strategies for alleviating strain and fostering ease of movement, supported by research and experiential insights. Pedagogical recommendations are offered to integrate these principles into flute instruction, helping …

Miguel Zenón's Solo On Olas Y Arenas And His Approach To Improvisation, David Alonso-Otero

Theses and Dissertations--Music

This paper is about Miguel Zenón’s approach to improvisation using one of his solos on his album Alma Adentro: The Puerto Rican Songbook. This includes the biography of Miguel Zenón along with the composer, Sylvia Rexach. Jazz Improvisation has a large spectrum of pedagogy, different ways to approach it along with various points of view. The purpose of this paper is to show one of the many ways to see jazz improvisation through the eyes of Miguel Zenón and his unique thinking process to jazz. The transcription will be in the appendices, as well as the interview done in …

Hardcore And Metal Music In Music Therapy: A Functional Guide For Music Therapists And Music Therapy Students, Caroline Nc Wood

Theses and Dissertations--Music

Hardcore and metal music have long been misrepresented, stigmatized, and dismissed in music academia, and overlooked in music therapy literature and education. However, these genres hold significant emotional, cultural, and therapeutic value for many listeners, offering unique opportunities for connection, expression, catharsis, and healing. This thesis presents a practical, introductory guide to help music therapists and music therapy students gain an understanding of why, when, and how to effectively and authentically incorporate hardcore and metal music into clinical practice. The project explores the historical development of these genres; sociocultural associations and considerations, including stigmatization, sensationalism, and the juxtaposing sociopolitical dynamics …

A Pedagogical Survey Of Solo Multiple Percussion Literature, Austin Shoupe

Theses and Dissertations--Music

In the study of western classical percussion, there are three or four core instruments through which the necessary skills of the discipline are taught. The three universally accepted core instruments are snare drum, keyboard percussion, and timpani. Multiple Percussion is often considered as a fourth core instrument, given its significant presence in symphonic literature, musical theatre, chamber music, and solo repertoire. However, despite its importance to percussion performance, there are very few published pedagogical materials for multiple percussion. While there are etude books available, there are no comprehensive method books aimed at multiple percussion pedagogy.

To fill this gap in …

A Comparison Of Informal Choral Singing Experiences, Christopher Powell

Theses and Dissertations--Music

A traditional choir relies on the interest and participation of the population in communal singing. However, drawing willing participants into a traditional choir program can often prove challenging to music educators, community choir directors, and leaders of religious music programs. One of the most prevalent informal singing groups in the USA is Sacred Harp. Sacred Harp “singings” have been around since the early years of The Sacred Harp itself. These singings occur regularly in multiple locations across the country and around the world. These events have an open atmosphere and, despite the mostly Christian material, have no expectation of a …

Designing An Undergraduate Opera Workshop Curriculum For Universities, Christopher L. Burchett

Theses and Dissertations--Music

The world of opera is quickly evolving to keep pace with the other arts forms of film, television and Broadway theater. For many years the genre had been reluctant to change with the times and update the skills of their performers. Those days have passed. Today’s operatic performers must be better actors, better movers and more theatrically efficient with their overall skill set in addition to having the secured singing technique that has for so long been the top priority. Universities must take ownership of this training.

Today’s university opera workshop programs must be more than they have been in …

Secondary String Students’ Perceptions Of The Role Of Self-Efficacy In Mitigating Their Musical Performance Anxiety: A Collective Case Study, Mary E. Henton

Theses and Dissertations--Music

Musical Performance Anxiety (MPA) is a multifaceted psychological condition that arises before, during, or after musical performance and presents a significant obstacle for young musicians, particularly secondary string students. Closely linked to the spotlight effect and social anxiety, MPA has worsened among youth following the COVID-19 pandemic due to decreased social interaction, both of which have had adverse effects on students’ mental health. Despite teachers’ awareness of MPA’s prevalence, music education programs often lack instruction in specific coping mechanisms to address it, and many students do not seek support or treatment.

The purpose of this study was to describe the …