Digital Commons Network^™

Movable Bed Physical Model Investigation Of Bed Level Changes Caused By River Sediment Diversions, Hayden Cole Franklin

LSU Master's Theses

Since 1932, due to human and natural processes, over 2,000 square miles of Louisiana’s coast have been lost. River sediment diversions have been proposed as sustainable options to combat land loss. These projects, like the proposed Mid-Barataria Sediment Diversion, are designed to deliver sediment-rich Mississippi River water into nearby bays and estuaries, helping build and maintain land. However, river sediment diversions may alter river hydraulics and sediment transport, potentially inducing upstream degradation and downstream aggradation. Using the Lower Mississippi River Physical Model (LMRPM), this study quantitatively analyzed bed level changes as well as hydraulic conditions associated with the proposed Mid-Barataria …

Machine Learning Based Models For Simulation And Analysis Of Bulk Earth Melt System, Abin Shakya

LSU Doctoral Dissertations

Understanding the segregation of bulk Earth melt systems into metallic (core) and silicate (mantle) phases under high-pressure and high-temperature conditions is central to modeling Earth’s interior, yet relevant experimental and computational studies remain limited. This work develops a machine learning–based simulation pipeline that iteratively couples first-principles (quantum mechanical) calculations with neural network training to generate high-fidelity force fields. Using major-element Fe–Mg–Si–O melt systems, with and without H and N, as testbeds, we demonstrate that this framework enables large-scale molecular dynamics simulations at near first-principles accuracy. We further introduce a sequence of phase identification methods, progressing from statistical binning of elemental …

Lisa Cristiani: A Survey And Analysis Of Her Musical Travels Through The Russian Empire (1848-1853), Emilia González Dorantes

LSU Master's Theses

Information about French cellist Lisa Cristiani (1825–1853) and her travels through Imperial Russia has mainly reached us thanks to two articles in French periodicals published around the first decade since her death. These sources prioritized the journey itself, centering the narrative on her travels rather than on her musical activities. Recent scholarship on Cristiani has expanded our previously limited knowledge about her life. Scholars such as Hoffmann (2011) and Deserno (2018) have focused on biographical and feminist analysis, and DeVries (2014) has unveiled new documents from Russian sources. Nonetheless, a detailed examination of her musical performances within Imperial Russia has …

An Analysis Of The Extended Techniques In The Timpani Works Of Christopher Deane, Chase D. Gillett

LSU Doctoral Dissertations

The timpani were first introduced to the orchestra in the 1700s, and composers immediately used the instruments in unique ways. To this day, timpani literature continues to experiment with new techniques to create diverse sounds. One such composer who created unique sounds for the instrument was Christopher Deane. Deane is one of the most influential composers of percussion literature whose works are frequently programmed on concerts and recitals. Throughout his career, he has received many commissions from across the United States, won awards for his compositions, and had numerous world premieres at the Percussive Arts Society International Convention. His use …

Bridging Traditions: A Study And Performance Of Chen Yi's Chamber And Vocal Works, Oufeifei Hu

LSU Doctoral Dissertations

Chinese-American composer Chen Yi (b. 1953) is widely recognized for her distinctive integration of Chinese musical traditions and Western classical compositional techniques. Her music frequently incorporates elements of Chinese folk melodies, traditional musical idioms, and cultural aesthetics within a contemporary art-music framework. Despite her growing international reputation, detailed analytical studies of many of her individual works remain limited.

This study examines four selected works by Chen Yi—Chinese Ancient Dance, Meditation, Fisherman’s Song, and From Old Peking Folklore—from both analytical and performance perspectives. Through musical analysis, the study explores how Chen Yi incorporates Chinese musical elements and transforms them within modern …

Exploring Sequential Technical Practices Towards Skill Development And Musical Expression In Violin Performance And String Pedagogy Methods, Erin Kim

LSU Doctoral Dissertations

This dissertation proposes the Erin Kim System, a pedagogical framework designed to support sequential technical development and musical expression in beginning, intermediate, and advanced levels of violin performance. This system examines how structured technical progression, guided repertoire sequencing, and a nurturing learning environment with the teacher and parents can foster skill acquisition and long-term musical engagement among violin students. Musical enjoyment and inspiration serve as primary motivators for learning, particularly when students are encouraged to work toward performing aspirational repertoire such as the Sibelius Violin Concerto. By organizing repertoire and supplemental exercises in a clear step-by-step process, this system enables …

The History, Development, And Continual Evolution Of The Percussion Theatre Genre, Steven L. Wimberley

LSU Doctoral Dissertations

During the twentieth century, artists in every discipline sought to create new, original art that would both challenge societal norms and expand their respective art to new extremes. This expansion in contemporary music saw the emergence of electronics, chance elements, “found sounds,” speaking, acting, and physical gestures. As we continue through the twentieth century, we also see the onset of the percussionist as an independent musical artist and a desire for original music for percussion. The intersection of these new developments created what is known as percussion theatre.

Percussion theatre can be broadly defined as a genre of musical composition …

Extremal Connectivity In Graphs And Matroids, Yiwei Ge

LSU Doctoral Dissertations

Connectivity is a central theme in both graph theory and matroid theory. This dissertation investigates extremal connectivity in graphs and matroids, with emphasis on unavoidable structures and minimal connectivity phenomena.

Chapter 2 introduces cycle-contraction minors of graphs and investigates their structural properties. We establish a connection between cc-minors and induced subgraphs via graph duality. The main result gives an unavoidable-families characterization for cc-minors of sufficiently large loopless $2$-connected graphs.

Chapter 3 studies super-minimally $3$-connected graphs, namely $3$-connected graphs that have no proper $3$-connected subgraphs. We establish extremal bounds on structural parameters of these graphs, including the minimum number of degree-$3$ …

Circuits And Enumeration Problems For Matroids, Christine H. Cho

LSU Doctoral Dissertations

This dissertation is a collection of work concerning the structure and enumeration of circuits and other distinguished sets in a matroid. The Tutte polynomial, recognized as the universal deletion-contraction invariant in matroid and graph theory, is a natural starting point when considering enumeration problems for matroids. The main result in Chapter 2 generalizes a theorem of Dean Lucas concerning the Tutte polynomial and its behavior under rank-preserving weak maps. This generalization provides an avenue for comparing the numbers of circuits, bases, rank-k flats, and hyperplanes of a matroid containing an element given two distinct, yet related, elements.

Chapter 3 addresses …

Gas Lift Valve Operation Under Elevated Pressure And Temperature Conditions, Pedro O. De Melo Flores

LSU Master's Theses

Gas lift valves are critical components in artificial lift systems, and their performance directly influences well unloading efficiency and long-term production. Current industry models used to correct valve opening and closing pressure for temperature rely on assumptions that have not been extensively validated against experimental data. This study experimentally investigates the opening and closing behavior of injection pressure-operated (IPO) gas lift valves under controlled elevated-temperature conditions. A load rate test bench was modified to include a heating system capable of maintaining valve temperatures up to 220°F. Five gas lift valve designs from multiple manufacturers were tested over a range of …

Exploring The Well-Being Of Students: Mental Health Symptoms And Help-Seeking In Students With And Without Disabilities, Delaney M. Havrylkoff

LSU Master's Theses

Students with learning-related disabilities (LRDs) are a growing population in schools worthy of more holistic attention. This vulnerable population often receives support for their academic needs, while their mental health needs tend to get overlooked or untreated. Students with LRDs often face more negative experiences (e.g., lower academic performance, bullying, and peer victimization) in school compared to their peers without disabilities. As a result, they may experience higher levels of mental health issues. The purpose of this study was to examine the mental health status and service utilization of students with LRDs in schools compared to their peers without disabilities. …

Effects Of Static Ankle Stretching On Balance And Gait: The Roles Of Age And Parkinson's Disease, Taylor M. Gauss

LSU Doctoral Dissertations

The focus of this dissertation involves the effects of static ankle stretching on balance and gait in adults of different ages and with Parkinson’s disease (PD). A brief introduction in Chapter 1 precedes a detailed literature review in Chapter 2, in which we identify gaps in research on balance and gait following ankle stretching and explain why ankle stretching may serve as a predominant strategy for improving motor performance in aging and PD populations. In Chapter 3, we present the first study identifying whether muscle group selection or stretch duration influences balance in young adults. Results showed that longer durations …

2024-2025 Ecei Annual Report, Cynthia Dicarlo

Early Childhood Education Institute Annual Reports

No abstract provided.

Just City And Racialized Media: How A Non-Profit Provokes Policy And Fights Criminal Injustices, Isabella L. Wollfarth

LSU Master's Theses

This study explored the intersection of racialized media narratives, nonprofits, and penal policy through a case study of Just City, a nonprofit criminal justice organization located in Shelby County, Tennessee. Through the lens of Just City, this study explored how nonprofits resist racialized media narratives regarding crime and how in turn this contributes to penal policy reforms. This is accomplished using a thematic analysis to draw larger conclusions from coding Just City’s Instagram and through extensive interviews with Just City staff and local Shelby County and Tennessee politicians. These methods are guided by framing theory, an ideological framework that explains …

A Pretraining-Based Framework For On-Device Training Of Imu-Based Locomotion Mode Detection For Wearable Active Exoskeletons, Muhammad Tahir Khan

LSU Master's Theses

Active exoskeletons are being developed to support human movement in physically demanding industries such as construction. For these systems to work effectively, they must be able to correctly identify the user’s current activity. This process is known as locomotion mode detection and plays an important role in selecting the appropriate control parameters for exoskeletons. Many existing approaches use inertial measurement units (IMUs) to recognize these activities and have shown strong performance. However, most of these methods depend on large amounts of labeled data collected under specific conditions. As a result, they often do not perform well when applied to new …

Evaluative Expressions In Spanish Digital Discourse: A Sociopragmatic Study Of Vaya/Qué Constructions, Jason L. Meier

LSU Master's Theses

This study examines the sociopragmatic patterns of Spanish evaluative constructions involving qué/vaya in contemporary digital discourse. Drawing upon politeness and impoliteness frameworks by Penelope Brown and Stephen C. Levinson (1978, 1987) and Jonathan Culpeper (1996), this research observes how speakers deploy use these constructions within public discourse to negotiate stance. The data consists of posts from X (formerly Twitter) and comments from YouTube videos, selected to showcase naturally occurring instances of (im)politeness across social media. These constructions are key to determining how society navigates expression and form within public discourse. In addition to the modern findings, a focused analysis of …

Who Let The Werewolves Into The Manuscripts: Written And Pictorial Representations Of Werewolves In English Manuscripts, Allison Slowiak

LSU Master's Theses

The werewolf – a fictional figure that transforms from human to wolf – serves as a compelling example of how medieval thought shaped ideas about identity and transformation. The motif of the werewolf, present in a small corpus of works from the tenth through the fourteenth century, emerged to explore the limits of change while also comparing the likeness of humanity to its animal counterpart. This paper explores medieval literature - Beowulf, Bisclavret, Biclarel, and Melion – from both French or English descent to offer overlapping and contrasting thoughts about human likeness to wolves. The manuscripts - The Nowell Codex, …

The Living Archive: Photography, Social Media, And The New Frontier Of Activism, Lundyn C. Herring

LSU Master's Theses

This thesis seeks to analyze the discursive field and technology of photography and its multi-faceted role in the oppression of colonized people under Western imperialism. Among the main collection highlights of many established state-run archival institutions are photographic records consisting of surveillance images, mugshots, and other visual media as representations of the political hegemony that is exerted over governed peoples. From the mid-19th century to 2026, much has shifted in the realm of photography with the introduction of smartphones, accessible technology, and social media platforms during the beginning of the twenty-first century. As states and powerholders apply the technology of …

Wearable Sensor System Used To Measure Linear And Angular Acceleration Of The Head Of American Football Players, David A. Emerson

LSU Master's Theses

American football players are repeatedly subject to high-velocity impacts; collisions can exceed 100 g in the NFL [1]. Rotational accelerations of the head caused by high-velocity collisions have been proven to be extremely damaging to the highly organized brain fibers at the brain-skull interface [2]. The sensor system (SS) measures the nonplanar acceleration at four locations on a chin strap using ADXL314 accelerometers and utilizes rigid-body kinematics to estimate the head rotational state from the measured acceleration of the SS [3]. The SS was validated through progressive testing, including steady-state, linear impact, and rotational impact testing. The ADLX314 sensor exhibited …

A Standard Notation System For Beatbox And Vocal Percussion, Andrew W. Bass

LSU Master's Theses

Every instrument in the cannon has a standard notation system. Even percussion, with its hundreds of instruments, has a system of notation that can be understood. With that being said, Beatbox/ vocal percussion does not have a standardized notation for its music. As a beatboxer myself, when I perform, I often have to either create my own part to perform or I have to listen to a recording of a previous performance of a piece. In the rare occasion when there is sheet music, it is often not clear. Pentatonix is currently the premier A Capella group and when I …

Transcribing Shakuhachi Honkyoku For Bassoon: Notation, Orality, And Perfomance Practice, Adrian Fonseca Tellez

LSU Doctoral Dissertations

This project consists of transcriptions of two pieces from the shakuhachi honkyoku (“original pieces”) repertoire, Kumoi Jishi (Cloud Lion) and Sanya Sugagaki (Three Valleys), with the aim of extending the bassoon’s repertoire outside of the Western canon while exploring the capabilities of the bassoon to emulate the performance practices of the shakuhachi, which include both extended techniques found in current bassoon literature as well as techniques unique to shakuhachi performance. Included in the written document is a brief overview of the shakuhachi and its applications in traditional Japanese music, a description of honkyoku and its characteristics, and the Japanese concept …

Teaching And Performing Ginastera: A Stylistic And Pedagogical Exploration Of Ginastera’S Pampeana No. 1, Paula Toral Navarro

LSU Doctoral Dissertations

This project examines Alberto Ginastera’s Pampeana No. 1 for violin and piano through both stylistic performance and pedagogy approach. The research has two primary objectives: (1) to propose a performance perspective that draws on traditional Argentine musical idioms alongside Western classical practice, and (2) to create a pedagogical guide that supports the development of the technical and stylistic skills required for the work, including a sequence of preparatory pieces. The written document provides an overview of Ginastera’s life, including cultural and political context and an examination of his compositional style within his nationalist period. It also examines selected elements of …

The Power Of Beliefs: Cognitive Pathways Linking Mental Health Literacy To Psychological Distress, Katherine Elise Kirsch

LSU Doctoral Dissertations

Mental health disorders are prevalent in children and adolescents, and they are accompanied by challenges throughout the lifespan. Mental health literacy (MHL) provides a flexible framework to address child and adolescent mental health. Identifying significant relationships between MHL and mental health outcomes has the potential to inform successful interventions. This study uses a secondary analysis of data gathered for the Study on Attitudes of Adolescents and Young Adults Toward Relevant Health Issues to isolate MHL belief domains that significantly effect psychological distress levels in adolescents.

The Swiss Youth Mental Health Literacy and Stigma Survey was used to assess the MHL, …

“Where All Is Playtime And Pleasure”: Feeling The Otherworldly In Late Medieval Literature, Anna K. Mcgill

LSU Doctoral Dissertations

In this dissertation, I present intra-, inter-, and extra-textual felt responses to encounters with the otherworldly as described in Late Medieval texts as a lens through which to consider personal, social, and national imaginative potential surrounding contemporary issues across genres and disciplines. I argue that the use of otherworlds and otherworldly agents as both personally and rhetorically compelling analogues through which contemporary issues can be explored. I start my discussion of the felt impacts of encounters with the Arthurian otherworldly, with a particular focus on Glastonbury and Arthur’s alleged grave there, and how they transmit affects of sovereign authority. Next, …

In The Realm Of Dreams: The Feminine Imagination In Music, Katie Scarlett Ellender

LSU Doctoral Dissertations

This project examines selected works by Clara Schumann, Rebecca Clarke, and Lili Boulanger that contain representations of night, dream, and mythology. These composers were influenced by the prevailing artistic movements during their lives, including German Romanticism, Impressionism, and Symbolism, which emphasized nocturnal landscapes, supernatural beings, and liminal states. Descriptive analysis and performance recommendations are provided for selected Lieder by Clara Schumann, Rebecca Clarke’s Morpheus, and Lili Boulanger’s Nocturne. Particular emphasis is given to how each composer uses night, dream, and myth imagery as expressive frameworks that inform decisions on harmonic language, level of cadential resolution, motivic repetition and transformation, texture, …

Some Modal Insights From A Defense Of The Principle Of Sufficient Reason, Daniel Kim

LSU Master's Theses

The Principle of Sufficient Reason has a long history, but basically put, states that everything that exists has a reason or explanation for its existence. This principle has been a controversial one as it has been used to argue for the existence of God and have been accused of entailing determinism. In this thesis, I will be defending a version of the PSR advocated by Alexander Pruss, that all true contingent propositions need an explanation. I will also argue that the principle of sufficient reason should be restricted to our phenomenal experiences, just like Kant does.

This is in response …

Theory, Experiments, And Image Recovery Algorithms For X-Ray Interferometry, Hunter C. Meyer

LSU Doctoral Dissertations

Purpose: X-ray grating interferometry is a form of X-ray phase contrast imaging capable of simultaneously measuring attenuation, differential-phase, and dark-field images arising from X-ray absorption, refraction, and small-angle scattering, respectively. These additional contrast mechanisms have potential clinical and industrial applications, particularly for lung tissue characterization and disease identification. As grating interferometers approach clinical viability, key challenges include reducing X-ray dose, mitigating mechanical instability, and correcting spectral artifacts resulting from beam hardening.

Methods: The modulated phase grating interferometer (MPGI) is a potential solution for reducing X-ray dose by eliminating the analyzer grating used in alternative interferometer designs, including the Talbot-Lau interferometer …

Theta Series And Their Applications, Koustav Mondal

LSU Doctoral Dissertations

Theta series encode the number of representations of integers by quadratic forms in their Fourier coefficients and connect classical counting problems to the theory of modular forms and elliptic curves. On the other hand, theta series connect with hypergeometric series via Ramanujan’s theory of elliptic functions to alternative bases. This dissertation explores these connections and applies theta series to solve problems involving representations of integers  and  special values of $L$-functions. We analyze the theta series associated to the quadratic form $Q(\Vec{x})=x_1^2+x_2^2+x_3^2+x_4^2$ with congruence conditions on $x_i$ modulo $2,3,4$ and $6$. By interpreting theta series as modular forms, we can express …

Genome Wide Association Study (Gwas) On Different Economic Traits And Epigenetic Stability Of Sweetpotato In Louisiana, Ajay Dhungana

LSU Doctoral Dissertations

Sweetpotato [Ipomoea batatas (L.) Lam] is a globally important food, feed, and industrial crop, yet its improvement is constrained by a complex hexaploid genome, clonal propagation, and susceptibility to multiple diseases. In Louisiana, production is threatened primarily by Fusarium oxysporum f. sp. batatas (Fusarium wilt) and Ceratocystis fimbriata (Black rot). Furthermore, the in vitro propagation methods essential for disease-free planting material and germplasm conservation can introduce epigenetic instability that undermines clonal fidelity. This dissertation integrates genome-wide association studies (GWAS), genotype by environment interaction (GEI) and DNA methylation profiling to dissect resistance mechanisms and assess epigenetic stability in Louisiana sweetpotato …

Effect Of Light Elements On The Melting Behavior Of Liquid Iron Alloys Under Earth’S Inner Core Boundary Conditions, Olaniyi Anisere

LSU Master's Theses

The temperature at Earth’s inner core boundary (ICB) is set by the melting temperature of the iron-rich outer core at core pressures, yet this remains uncertain because melting depends strongly on composition and pressure. Light elements are required to explain the core’s density deficit, but the identity, abundance, and combined influence of these elements on melting under ICB conditions are still debated. This thesis quantifies how candidate light elements modify the melting behavior of iron alloys at ICB-relevant pressures and uses these composition-dependent melting relations to constrain ICB temperature.

Melting relations were determined using molecular dynamics simulations in VASP accelerated …