Digital Commons Network^™

Reasoning The Voice: Toward A Diagnostic And Prescriptive Technique In The Teaching Of Singing, Carlos E. Santelli

LSU Doctoral Dissertations

Voice pedagogy literature often draws a parallel between a doctor’s ability to diagnose illness and prescribe treatment, and a voice teacher’s ability to identify vocal obstacles and design solutions. The core of these parallel procedures lies in an ability to utilize critical reasoning skills within highly specific contexts. Medical literature describes this as “clinical reasoning” and has studied it as a learned process. Voice pedagogy literature has traditionally described this as an innate process which is solely developed through experience. This document broadly examines the ways in which medical literature has broken down clinical reasoning into specific cognitive processes and …

Simulations Of Intruder-Free X-Ray Transient Absorption And Time-Resolved X-Ray Scattering For Probing Attosecond Electron Dynamics, Mengqi Yang

LSU Doctoral Dissertations

The motion of electrons plays a fundamental role in both physics and chemistry, and capturing such dynamics requires the ability to resolve changes at the attosecond timescale, which is enabled by the advent of ultrashort laser pulses. This dissertation aims to facilitate the interpretation of ultrafast electron dynamics and attosecond spectroscopy by real-time time-dependent density functional theory (RT-TDDFT) simulations. The first part of this dissertation focuses on improving the simulation of X-ray transient absorption spectra (XTAS) with Gaussian basis sets in RT-TDDFT by applying a filter to the transition dipole matrix. Due to the spatial limitation of atom-centered Gaussian functions, …

Pathways To Blunted Facial Affect In Negative Schizotypy: Social Motivation And Online Cognitive Resources, Tovah M.D. Cowan

LSU Doctoral Dissertations

Schizotypy, a range of personality traits which confer liability for schizophrenia, is associated with significantly diminished social functioning and quality of life. Social dysfunction in all forms of schizotypy, including schizophrenia, is connected to blunted affect, or diminished expressivity, particularly facial expressions which are less frequent, intense, or long than typical. However, the mechanisms and treatments for blunted affect are, as yet, poorly understood and underdeveloped. In this project, two putative mechanisms of blunted affect were explored. The first involves cognitive load capacities, which are diminished in schizotypy, causing blunted affect – individuals do not have the cognitive resources to …

Sedimentary Processes And Instability On The Mississippi River Delta Front Near The Wreck Of The Ss Virginia, Nathan Figueredo

LSU Doctoral Dissertations

Multi-cores and piston cores were collected seaward of the Mississippi River Delta’s Southwest Pass at ~80 m water depth in 2017 to better understand sedimentary characteristics and processes on the Mississippi River Delta Front (MRDF) in the vicinity of the SS Virginia shipwreck, and to support marine archeological research. Core analyses were performed to inform our understanding of the dynamics of sediment motion in the study area through radionuclide activity (²¹⁰Pb and ¹³⁷Cs), volume frequency of grain size, bulk density, and fabric (X-Radiography). Sediment accumulation rates (SAR), calculated from multi-core ²¹⁰Pb activity are 0.22 - 0.29 …

Design, Construction, And Testing Of Recombinant Dna-Based Vaccines For Protection Against Salmonella Enterica Subspecies Enterica Serovar Javiana, Ashley Edwards

LSU Doctoral Dissertations

In the United States, Salmonella Javiana is among the top 5 most common nontyphoidal Salmonella serotypes, with a 325% increase in infection rate since 1970. Globally, nontyphoidal Salmonella leads to approximately 93.8 million illnesses and 155,000 deaths annually, with disproportionate impacts in developing countries. In the United States alone, these infections lead to over $4 billion in costs, the majority of which are attributed to those expenses incurred from mortalities. The zoonotic nature of nontyphoidal Salmonellae and their ability to survive on and within vegetation mean huge economic burden potential for various agricultural industries as well, especially since some of …

Roleplaying Games And Performance, Benjamin Joseph Munise

LSU Doctoral Dissertations

Roleplaying Games and Performance calls to mind popular appearances of roleplaying games on stage and screen, like Stranger Things or Qui Nguyen’s popular play, She Kills Monsters. However, inquiry into the way roleplaying games appear in these titles reveals the way they have been instrumentalized to serve the ends of their respective mediums. Scholars writing about roleplaying games also tend to leap straight to analyses of video games, with many words spilled over World of Warcraft while a live site of analog performance sits before them. In this work, I address the tabletop roleplaying game as a medium with …

Confirmatory Factor Analysis Of The Adult Coping Inventory, Kristen Ashley Hollas

LSU Doctoral Dissertations

There are few psychometrically sound measures that assess coping in adults. For example, a widely used measure of coping, the COPE, has highly unstable sub-scales and was developed using a homogenous sample (Lyne & Roger, 2000). Because of these limitations, the Adult Coping Inventory (ACI) was developed. The ACI is a 57-item measure that contains five factors including Problem Solving, Mindfulness, Maladaptive Coping, Social Support and Avoidance. Initial reliability and validity analyses demonstrate good construct, concurrent and incremental validity. The current study involved conducting a confirmatory factor analysis to confirm the factor structure of the ACI. The participant sample consisted …

Effects Of Research Dissemination Vehicle Use On Preservice Teacher Candidate Knowledge Acquisition, Allie Jenkins Boquet

LSU Doctoral Dissertations

This study provides information on how EBPs can be disseminated to education practitioners for the purpose of knowledge acquisition. With a well-established research-to-practice gap in the field of education, this study determined which research dissemination vehicle, practitioner journal article, informational video, or textbook chapter, allowed for the highest acquisition of knowledge for preservice teachers.

The purpose of this study was to determine how the use of three different research dissemination vehicles, 1) practitioner journal articles, 2) informational videos, and 3) textbook chapters, impacts acquisition of knowledge of the EBP, instructional feedback, when utilized by preservice teacher candidates as well as …

A History Of The Construction And Financing Of Division I Football Bowl Subdivision And Ivy League Stadia: An Ideal-Type On Financial Modernization, Tiffany E. Demiris

LSU Doctoral Dissertations

This dissertation seeks to introduce financial modernization as a distinct subcategory of modernization and present practical applications for sport managers. Modernization literature has shown that, as society advances, levels of complexity increase. Modernization is generally concerned about the impact of technology, transportation, financial operations, and the reduction of risk in society (Seifried & Novicevic, 2017). These facets are not only important to established modernization subcategories, reflexive and ecological, but are also applicable to financial systems and demonstrate how financial modernization is both complementary and a distinct type of modernization. It is possible to take larger risks over time because so …

The Effectiveness Of Eye-Hand Coordination Training In Virtual Reality, Kelley Burger

LSU Doctoral Dissertations

Virtual environments (VE) and virtual reality (VR) through head-mounted displays (HMD) have been used to test and train eye-hand coordination skills in a way that is more immersive than traditional 2D video training. As this technology continues to evolve, researchers have sought to determine the degree to which these new technologies can augment training. This research attempts to expand the literature on sport skill training in VE and VR to elucidate the training protocols that support learning. The first study was designed to determine how a single session of occlusion training would affect football catching skills in VR. While adding …

Learning–Assisted Constraint Filtering To Enhance Power System Optimization Performance, Fouad Hasan

LSU Doctoral Dissertations

Machine learning (ML) is a powerful tool that provides meaningful insights for operators to make fast and efficient decisions by analyzing data from power systems. ML techniques have great potential to assist in solving optimization problems within a shorter time frame and with less computational burden. AC optimal power flow (ACOPF), dynamic economic dispatch (D-ED), and security-constrained unit commitment (SCUC) are the three energy management optimization functions studied in this dissertation. ACOPF is solved every 5~15 minutes. Because of the nonconvex and complex nature of ACOPF, solving this problem for large systems is computationally expensive and time-consuming. Classification and regression …

Plato's Republics: A Dramatic Interpretation Of The Early Cities In Plato's "Republic", Simeon Burns

LSU Doctoral Dissertations

This dissertation will demonstrate a new methodological approach to reading Plato’s Republic. I develop and apply a dramatic, dynamic hermeneutic to Book II and part of Book III in the text. This method holds that each speech is the product of a preceding agreement or disagreement between two speakers. Agreements lead to the argument’s advancement and disagreements result in a regression to a previous agreement from which to restart the exchange. The focus section is largely on the early exchange Socrates has with Adeimantus. I argue that Socrates is an unwilling participant in the famous discussion on the meaning …

The Influence Of Selected Personal And Academic Demographic Characteristics On Retention From Fourth To Fifth Semester Of Enrollment Among Traditional-Age Undergraduate Students At A Research Extensive University In The Southern Portion Of The United States, Tammy R. Millican

LSU Doctoral Dissertations

While many Americans may be questioning the value of a college degree due to rising costs, on virtually every measure of economic well-being and career attainment—from personal earnings to job satisfaction to the share employed full time—young college graduates are outperforming their peers with less education. Yet college dropout rates indicate that up to 32.9% of undergraduates do not complete their degree program, which has a financial impact on both students and the universities and colleges where they enroll (Hanson, 2022).

Historically, students who leave college before completing a baccalaureate degree are no better qualified than those with a high …

An Evaluation Of Procedures To Increase Medical Device Compliance, Sarah Christian Holmes

LSU Doctoral Dissertations

Behavioral interventions have been implemented to increase compliance with medical devices across patient populations and target devices. Intervention to increase medical device compliance (MDC) can involve a variety of components, including different reinforcement, graduated exposure, extinction, and punishment with varying degrees of acceptability and feasibility. In the current study, we compared the effects of noncontingent (NCR) versus synchronous reinforcement schedules on the duration of MDC and latency to device removal with KN95 face masks with 2 patients with Autism Spectrum Disorder. Following an initial baseline phase demonstrating that both participants engaged in compliance for less than 5 min, we used …

Measuring Food Literacy Among Limited-Resourced Adults, Emelia Clement

LSU Doctoral Dissertations

Food literacy is the interrelated knowledge, skills and behaviors needed to plan and manage, select, prepare, and eat healthy food. It is positively associated with improved consumption of nutritious diets, and can be beneficial to limited-resource adults, who are often at risk for chronic diet-related diseases. Valid instruments for measuring food literacy in this population are scarce but urgently needed. The Eating and Food Literacy Behavior Questionnaire (EFLBQ) can be used to measure food literacy among limited-resource audiences.

Part one of this study aimed to determine the fitness of the EFLBQ to measure food literacy in limited-resource adults. A convenience …

Synthesis And Characterization Of Porphyrin-Encapsulated Nanoparticles: Investigations With Scanning Probe Microscopy, Olajumoke Helen Olubowale

LSU Doctoral Dissertations

Scanning probe microscopy (SPM) encompasses a family of surface measurements that use a sharp probe to “feel” a surface. The tip is scanned point-by-point to build a map of the sample topography, which can be correlated with local measurements of surface properties. This dissertation outlines the history of SPM and describes techniques, operational modes, and applications. A review of force volume mapping (FVM), a 3D characterization mode of SPM used to map material properties detailed. Force volume mapping can be achieved by measuring multiple force measurements point-by-point in a grid pattern. Local properties such as chemical forces, dielectric properties, nanomechanical …

Jeff Scott’S "Startin’ Sumthin’, Composed For The Monmouth Winds," Transcribed For Full Wind Band, Trevor Butts

LSU Doctoral Dissertations

The goal of this project is to create a wind band transcription of a work for a chamber music ensemble by Jeff Scott. Jeff Scott creates works that he considers “Urban Classical Music”. These works are rooted in European traditions and informed by his African American culture. His music is unapologetically influenced by the cultural experiences of his diverse, urban environment upbringing.

This project is intended to contribute to the overall body of wind band literature, specifically the body of wind band literature composed by underrepresented composers. There has been a lack of representation of African American composers throughout the …

Software-Defined Networking Security Techniques And The Digital Forensics Of The Sdn Control Plane, Abdullah Alshaya

LSU Doctoral Dissertations

Software-Defined Networking (SDN) is an efficient networking design that decouples the network's control plane from the data plane. When compared to the traditional network architecture, the SDN architecture shares many of the same security issues. The centralized SDN controller makes it easier to control, easier to program in real-time, and more flexible, but this comes at the cost of more security risks. An attack on the control plane layer of the SDN controller is a major security concern.

First, centralized design and the existence of a single point of failure in the control plane compromise the accessibility and availability of …

The Psychological Impact Of Adolescent Violence Exposure: The Roles Of Coping And Social Support, Kelsey Gnade Coulthard

LSU Doctoral Dissertations

Research demonstrates that children and adolescents experience a wide range of exposure to violence with rates ranging from 20% and 50% (Finkelhor & Dziuba-Leatherman, 1994; Finkelhor et al., 2005; Zimmerman & Posick, 2016). Violence exposure has been associated with several negative outcomes including biological, psychological, family-based, and academic problems. Further, studies have examined potential protective factors that may buffer against these consequences, with inconsistent results surrounding the roles of coping and social support. However, many of these studies use either an overly generalized definition of both violence exposure and/or social support or use very specific type of violence within a …

Effectively Using The Hoffmeister Concerto To Give Violists Comprehensive Training In Classical Viola Technique, Kaichao Zhao

LSU Doctoral Dissertations

ABSTRACT

This dissertation presents a three-stage learning process and curriculum for Franz Anton Hoffmeister's 1793 composition, the Hoffmeister Viola Concerto. The curriculum is meant to help students build a solid foundation and understanding of how to learn, practice, and master the viola. The three stages of the curriculum are (1) "RIB," which emphasizes the rhythmic components of the work; (2) "Musical," which highlights the emotional elements of performance; and (3) "Teaching," which teaches students how to teach themselves. The ultimate goal is for students to learn a comprehensive approach to help pupils quickly establish a learning and practice system. The …

Navigating Political Discussions Online: The Role Safe Spaces Play In Women's Political Participation On Twitter, Ayla Oden

LSU Doctoral Dissertations

This study analyzes how women navigate political discussions online. Social media breeds high-conflict spaces where threats and incivility are more likely to persist. To avoid ad hominem attacks or harassment from online, male users, women may be more likely to use “safe spaces” online, including stereotypically feminine conversations regarding “women’s issues.” The purpose of this study is to analyze how women discuss politics online and whether there are differences in the issues discussed by men and women on Twitter. Using three studies, I examined these differences and their relationship to the threats women face online and their political behavior offline. …

Regenerative Medicine For Tendon/Ligament Injuries: De Novo Equine Tendon/Ligament Neotissue Generation And Application, Takashi Taguchi

LSU Doctoral Dissertations

Tendon and ligament injuries are debilitating conditions across species. Poor regenerative capacities of these tissues limit restoration of original functions. The first study evaluated the effect of cellular administration on tendon/ligament injuries in horses using meta-analysis. The cellular administration was effective in restoring ultrasonographic echogenicity and increasing vascularity during early phase of healing. Additionally, it improved microstructural organization of healed tissue in terms of cellularity and fiber alignment. However, the study did not support its use for increasing rate of return to performance, expression/deposition of tendon-specific genes/proteins, or mechanical properties.

The findings led to the second study that engineered implantable …

Shape Memory Polymer-Based Multifunctional Syntactic Foams, Siavash Sarrafan

LSU Doctoral Dissertations

With the increase in popularity of shape memory polymers (SMPs), especially in applications such as aerospace, textile, biomedical engineering, and even structures, the weight of the material and the devices made with it has always been a crucial factor. Using the shape memory polymer as a matrix to make a syntactic foam is one of the best and most affordable approaches to creating a lighter material that still has the shape memory effect. The addition of particles of different stiffness, strength, and size, with variable fractions, creates a composite that enables engineering the mechanical, as well as other physical and …

Integrating Germplasm Repositories Into Oyster Aquaculture Systems At The Pathway, Center, And Network Levels, Sarah R. Bodenstein

LSU Doctoral Dissertations

Germplasm repositories offer many potential benefits to commercial farm operations, including preserving genetic resources and increasing production capabilities. Aquaculture industries have yet to take advantage of repository storage despite decades of research evaluating cryopreservation protocols. Eastern oysters (Crassostrea virginica), for example, are a useful research species when addressing this problem. Oysters are an economically important aquaculture species and a high-throughput cryopreservation method for oysters already exists. To address the gap between protocol research and commercial application a different approach is necessary that can analyze the requirements of repository development at multiple organizational levels. The goal of this dissertation was to …

Dicotomía: Context, Aesthetic, And Performance Of The Symphonic Works Of Margarita Luna García, Gabriela Sofía Gómez Estévez

LSU Doctoral Dissertations

Dominican women had an active role in the musical life and discourse of the Dominican Republic in the twentieth century and made substantial contributions as composers, performers, pedagogues, and scholars. Margarita Luna García (1921-2016), Dominican composer and pedagogue, was one of the most notable figures of avant-garde music in the Dominican Republic in the twentieth century. Numerous modernist trends converge in her works including serialism, indeterminacy, and graphic notation. Influenced by Paul Hindemith, Béla Bartók, Krzysztof Penderecki, and Dominican composer Manuel Simó, her works synthesize vernacular musical material and modernist techniques. Luna García’s orchestral works make use of folk rhythms, …

Apocalypse Then And Now: Narrative Influence And Thematic Subversion Of Victorian Literature In Modern American War Narratives, Douglas James Scully

LSU Doctoral Dissertations

In this dissertation, I argue that by looking at the lasting impact of Victorian war literature on a variety of modern media, one can see that an increased cultural awareness of trauma has led to less humane depictions of the traumatized. The multitude of Sherlock Holmes adaptations produced and set in various time periods and covering assorted wars serves as a strong example in my first chapter of how a Victorian-produced text can have a lingering impact, and the veteran Watson serves as a strong tool for adaptors to use when commenting on the shifting nature of war and the …

The Reality Of Teaching English Virtually: Esl Teachers' Perspectives And Experiences During The Covid-19 National Pandemic, Natalia Guerrero

LSU Doctoral Dissertations

This study examined the dilemma ESL teachers experienced as the educational system shifted from the usual modus operandi of in-person lessons to the uncharted virtual learning environment (VLE). ESL teachers, in one of the largest urban districts in Louisiana, accumulated additional roles and responsibilities that were unique to the teachers of the English learner (EL) population enrolled at their schools.

Data collected to answer the research questions were the product of single and focus group’s interviews with five ESL elementary and middle school teachers in Freedom District. State and district emergency response to COVID-19 guidelines, along with instructional artifacts, were …

The Characterization Of Selected Α- And Β-Carbonic Anhydrases Of Arabidopsis Thaliana, Hiruni Weerasooriya

LSU Doctoral Dissertations

Carbonic anhydrases (CAs) are zinc-metalloenzymes that interconvert two inorganic carbon (Ci) species, CO₂ and HCO₃^-. In Arabidopsis thaliana, there are eight αCA genes, six βCA genes, three γCA genes, and two γCA-like genes. The majority of CA research in plants has focused on finding a link between CA activity and photosynthesis rates. Since the CA genes are expressed in different plant tissues and multiple CA isoforms are distributed among various organelles of the plant cell, I hypothesize that CAs facilitate CO₂ diffusion among cell compartments and maintain Ci pools for carbon-requiring reactions by interconverting …

Development Of Novel Electrodes And Electrolytes For Safer Aqueous Ammonium Ion Batteries With Enhanced Performance., Shelton Farai Kuchena

LSU Doctoral Dissertations

The Lithium-ion battery (LIBs) system has dominated the battery market because of its superior energy and power density. Problems related to LIBs such as safety, scarcity of cobalt and lithium have led researchers to explore alternative battery systems. NH₄⁺ ion is a nonmetal charge carrier with lower molar mass (18 mol g^-1) and smaller hydrated ionic size (3.31 Å) which results in excellent electrochemical properties. Furthermore, NH₄⁺ ion has a tetrahedral structure that has no preferred orientation as compared to spherical metal ions giving a different intercalation chemistry based on hydrogen bonding. These properties …

A Menagerie Of Symmetry Testing Quantum Algorithms, Margarite Lynn Laborde

LSU Doctoral Dissertations

In Chapter 1, we establish the mathematical background used throughout this thesis. We review concepts from group and representation theory. We further establish fundamental concepts from quantum information. This will allow us to then define the different notions of symmetry necessary in the following chapters. In Chapter 2, we investigate Hamiltonian symmetries. We propose quantum algorithms capable of testing whether a Hamiltonian exhibits symmetry with respect to a group. Furthermore, we show that this algorithm is that this algorithm is DQC1-Complete. Finally, we execute one of our symmetry-testing algorithms on existing quantum computers for simple examples. In Chapter 3, we …