Sample 2, Author Two

General Documents

No abstract provided.

Long-Term Effects Of Harvesting Disturbance And Site Preparation On Soil Properties And Tree Growth In A Loblolly Pine (Pinus Taeda) Forest, Kyle M. Caccamesi

LSU Master's Theses

Productivity decline between rotations has long been a concern in intensively managed forest plantations. Research done over the last century has provided greater clarity on why this phenomenon occurs. The objective of this research was to observe long-term soil and tree growth characteristics that are likely to be influenced by operational harvesting activities. The experiment was conducted in Washington Parish, Louisiana on a site dominated by Ruston soil series, a well-drained, fine loamy, siliceous and thermic typic Paleudult. A randomized complete block design with 2 x 2 x 2 factorial treatments was used. The treatment factors were harvesting method, fertilization, …

The Study Of Hydrophobic Biomolecules With Matrix Assisted Laser Desorption Ionization Mass Spectrometry And Atomic Force Microscopy, Brandy L. Perkins

LSU Doctoral Dissertations

Abstract

Matrix assisted laser desorption ionization (MALDI) mass spectrometry (MS) can be used to obtain localization and chemical information of hydrophobic biomolecules on tissue samples.  A technique has been developed to modify a standard MALDI matrix that improves the selectivity for hydrophobic biomolecules on the tissue sample. The modification involves the use of a Group of Uniform Materials Based on Organic Salts (GUMBOS). GUMBOS are ionic liquids (IL) that are bulky organic ions with a counter ion that can be changed for tuning.  They are more stable than traditional matrices under vacuum.  Unlike traditional IL’s, the GUMBOS melting point ranges …

From Osbcurity To The Stage: A Stylistic And Pedagogical Exploration Of The Four Concert Etudes By Mikhail Bukinik, Luis Bernardo Castro

LSU Doctoral Dissertations

This research examines Mikhail Bukinik’s 4 Konzertetüden (concert etudes) for solo cello through both a stylistic performance and pedagogical approach. Despite Bukinik’s historical presence as a cellist and composer, these specific works have fallen into obscurity and remain largely absent from the standard pedagogical and performance canon. The research has two primary objectives. The first is to reintroduce these works to the modern repertoire, focusing on dissemination and performance practice. This involves a stylistic analysis of the four etudes, culminating in a recorded live performance during the lecture recital and the creation of a professional studio recording to serve as …

The Student Performer's Guide To Creating A Consortium, Jaycee Swan

LSU Doctoral Dissertations

Among advanced musicians who advocate for increasing diversity in classically oriented repertoire, music commissioning is a common practice. Funding a composer to write original music, however, seems out of reach for student musicians or those without the financial means and know-how. A more affordable and therefore accessible alternative to the stand-alone commission is the consortium-based commission for new music. In this lecture portion of a “lecture-recital with written document,” I (a) document my experience in spearheading a new music consortium and, from that experience, (b) present a guide for facilitating a new music consortium.

The project was the impetus for …

Predictive Modeling Of Readmission, Mortality, And Resource Utilization After Surgical And Transcatheter Aortic Valve Replacement, Raymond J. Martin

LSU Master's Theses

Aortic stenosis is the most prevalent valvular heart disease in North America. Its definitive treatments—surgical aortic valve replacement (SAVR) and transcatheter aortic valve replacement (TAVR)—carry a substantial burden of unplanned hospital readmission, which worsens patient outcomes, strains hospital capacity, and creates financial risk under value-based payment programs. Prior predictive work has largely focused on binary classification of 30-day readmission after TAVR. Such studies typically report predictor effects as odds or hazard ratios without validating patient-level probabilities, and neglect both the timing of readmission and the resources it consumes. To address these gaps, this thesis develops and empirically validates a unified, …

A Data-Driven Framework For Mitigating Breast Cancer Overdiagnosis: From Estimation To Risk-Adjusted Computer-Aided Diagnosis, William M. Brown Jr.

LSU Doctoral Dissertations

In Computer-Aided Diagnosis (CAD) of cancer, standard cost metrics (false-positives and false-negatives) fundamentally fail to account for overdiagnosis. Overdiagnosis is a critical scenario where a disease is correctly detected (true-positive) but is biologically indolent and would never have caused the patient harm or symptoms. While widely recognized in the medical community as a major healthcare crisis driving stressful and invasive overtreatment, overdiagnosis remains severely under-researched within computer science and engineering. This dissertation addresses this interdisciplinary gap by defining the three key computational challenges of overdiagnosis: (i) accurate estimation, (ii) harm quantification, and (iii) algorithmic mitigation. To overcome the estimation challenge, …

Using Fecal Diagnostic Tests To Assess The Prevalence Of Fasciola Hepatica In The United States Sheep Population, Brooke A. Delcambre

LSU Master's Theses

Fasciola hepatica, the common liver fluke, is endemic in the Pacific Northwest and Gulf Coast of the United States. To provide updated information on F. hepatica prevalence, as part of the USDA National Animal Health Monitoring System Sheep 2024 study, sheep operations in the top 30 sheep-producing states were identified, and producers were invited to participate. For each operation, feces were collected from at least eight sheep and pooled to form a single composite sample. Two methods were used to identify sheep infected with F. hepatica: fecal sedimentation and indirect sandwich ELISA. At the national level, across 318 operations, 7.1 …

Parental Enculturation And Child Well-Being In Immigrant Families: Examining Peer Relationship Difficulties And Emotional Symptoms In Asian American Youth, Yuxin Yu

LSU Master's Theses

Parents with immigration backgrounds face the dual challenges of maintaining their heritage culture while supporting their children’s adaptation to the mainstream culture. Although previous studies stressed both acculturation and enculturation, these two processes can compete and even conflict, leading to the important question for parents: Does parental enculturation influence children’s peer relationships and emotional functioning? This study examines the associations between parental enculturation and the social and emotional adaptation of Asian American youth by focusing on peer relationship difficulties and emotional symptoms. Participants included 75 Asian American parents of children aged 4 to 17, who completed measures of parental enculturation …

Irrigation Water Conservation And Accelerated Composting: An Exploration Of Environmentally Conscious Practices For Ornamental Horticulture, William James Carson Dunford

LSU Master's Theses

Best management practices for ornamental horticulture include proper management of irrigation water resources and substrate components. The first study investigated the effects of wind speed, wind direction, water pressure, and spray stake height on irrigation efficiency in nursery containers. Results indicated that lower spray stake height positions and lower wind speeds significantly improved the irrigation water volume captured within nursery containers by as much as 18% to 39%. Orienting spray stakes against prevailing winds further enhanced water retention, particularly at 0 and 1 inch heights. In contrast, higher stake elevations led to increased irrigation water loss by as much as …

Experimental Evaluation Of Membranes In The Recovery Of Hydrogen From Serpentinization, Rafael Dos Santos

LSU Master's Theses

Natural hydrogen generated through serpentinization reactions has emerged as a promising low-carbon energy resource. However, serpentinization-derived gas streams commonly contain methane (CH₄) and carbon dioxide (CO₂), requiring purification before hydrogen can be utilized in industrial applications. Membrane-based gas separation technologies offer a potentially cost-effective solution for hydrogen recovery; however, to the best of the author's knowledge, no previous studies have specifically investigated their application to serpentinization-derived gas streams.

This work evaluates the performance of two commercial polymeric membrane modules (Evonik and Generon) and one palladium-copper (Pd-Cu) membrane module (Okaya) for hydrogen recovery from gas compositions representative of serpentinization environments. An …

Seasonal Molecular And Secretory Responses Of Equine Ovarian Follicles To Estradiol And Sulpiride Treatment, Madalyn Autin

LSU Master's Theses

Mares entering seasonal anovulation during winter present a significant challenge for equine breeding programs. Treatment with estradiol cypionate (ECP) and sulpiride in a long-acting vehicle can advance the first ovulation of the season; however, the molecular and secretory mechanisms underlying this response remain unclear. This study compared follicle wall gene expression and endocrine factors (from blood plasma and follicular fluid) among seasonally anovulatory mares responding to ECP-sulpiride (RESP; n = 15, treated with 50 mg ECP and 3 g sulpiride), mares undergoing natural spring transition (ST; n = 16, vehicle-treated only), and mares cycling during the summer ovulatory season (SOV; …

A Detailed Characterization Of Exoplanet Host Stars And Their Planets With The Chara Array, Ashley A. Elliott

LSU Doctoral Dissertations

There exists a vastly diverse compilation of exoplanetary systems; ranging from planets the size of Earth to planets larger than Jupiter, planets with or without an atmosphere, planets with rocky compositions to planets with gaseous compositions, and more. Enough planets have been discovered and confirmed to enable statistically reliable statements about demographics, formation mechanisms, planetary properties, etc., all of which require reliable exoplanet parameters. Properly characterizing and understanding these worlds first requires accurate measurements of their host star fundamental properties as exoplanets were, at some point in time, under the direct influence of their host stars. Direct measurements of stars …

Nitrogen Management Strategies For Specialty Tea Production In Louisiana: Rate, Source Type, And Nutrient Dynamics, Autumn D. Hilderbrand

LSU Master's Theses

Tea (Camellia sinensis L.) is an emerging specialty crop in Louisiana and the southeastern United States; however, region-specific nitrogen (N) management recommendations remain limited. This research evaluated N fertilizer source, application rate, and nutrient leaching to identify management strategies that improve nitrogen use efficiency (NUE) and environmental sustainability during tea establishment.

Three complementary studies evaluated N source replacement, application rate, and fertilizer source effects on nutrient retention and movement. The first study evaluated the replacement of urea ammonium sulfate (UAS) with blood meal (BM) while maintaining a constant annual N application rate. Fertilizer replacement did not significantly affect leaf …

Impact Of Asphalt Binder Chemical Composition On The Performance Of Asphalt Mixture., Sagar Parajuli

LSU Master's Theses

Asphalt binder is composed of four chemical fractions, namely, saturates, aromatics, resins, and asphaltenes (SARA). Binders with the same performance grade (PG) can exhibit different chemical compositions due to variability in crude oil sources and refining processes. The objective of this study was to evaluate how such chemical variations influence the mechanical performance of asphalt mixtures at high, intermediate and low temperatures.

Eighteen 12.5-mm nominal Maximum Aggregate Size mixtures were designed using two aggregate types (limestone and gravel), and three binder grades (PG 67-22, PG 70-22m and PG 76-22m), each from three different sources with varying chemical fractions. A suite …

The Role Of Rhyme In Children’S Word Learning, Tengwen Fan

LSU Doctoral Dissertations

Rhyme increases the phonological similarity of phrases individuals hear and enhances recall from working memory. The present study explores whether rhyme aids word learning in children and examines the underlying neural mechanisms through which rhyme facilitates word learning. Thirty-four children between 6 and 8 years old completed a word learning task where they were exposed to 15 nonwords (NWs), four times each, in the sentence-final position as their EEG was recorded. Participants were randomly assigned to either a Rhyme or No-Rhyme group, where the NWs rhymed or did not rhyme with a prime real word in the sentence, respectively, during …

Explainable Machine Learning For Biomedical Diagnostics: Optical Imaging And Eeg Signal Analysis, Fozia Rajbdad

LSU Doctoral Dissertations

The growing convenience of complex biomedical data begins new roads for better disease detection and functional identification via artificial intelligence (AI). Nevertheless, conventional analysis methods often rely on basic metrics that drop sensitive biotic differences, and various AI systems are difficult to infer, limiting their clinical reliability and practical use. There is a growing need for explainable, physiologically relevant computational models that can extract key biomarkers from diverse biomedical data sources. This dissertation addresses this problem by obtaining explainable machine learning and deep learning procedures for studying biomedical signals and optical imaging data.

This dissertation is divided into two parts; …

Scattered Light Noise At Ligo Livingston Observatory Induced By Microseismic Ground Motion, Debasmita Nandi

LSU Doctoral Dissertations

Gravitational waves are “ripples” in the fabric of spacetime and create a minuscule change in the distance between two points. After publishing his theory of general relativity in 1915, Albert Einstein predicted the existence of gravitational waves as a consequence of the theory. Almost 100 years after the theoretical prediction, gravitational waves were detected for the first time in 2015 by the Advanced LIGO detectors in Livingston, Louisiana, and Hanford, Washington. Gravitational waves have a very small amplitude, making it very challenging to detect them. Different types of noise sources either of instrumental or environmental origin can reduce the astrophysical …

A Reduced-Order Framework For Stochastic Criticality Estimation In Granular Energetic Materials, Philip T. Melton

LSU Master's Theses

Granular energetic materials (EMs) exhibit stochastic shock initiation because pore collapse, frictional dissipation, and localized thermal activation depend on microstructural descriptors that vary between nominally identical samples. Fully resolved mesoscale and atomistic calculations can represent these mechanisms, but their computational cost limits direct ensemble evaluation of microstructure-conditioned criticality thresholds. This thesis introduces a reduced-order framework for stochastic criticality estimation in granular EMs by coupling five explicitly defined model components: first, a one-dimensional steady compaction-shock model that maps initial solid volume fraction and shock pressure to a bulk mass-specific dissipated-work budget; second, an SEM/synthetic-image segmentation workflow that extracts pore area, perimeter, …

Scraping The Earth: Testing Ndvi As An Indicator Of Military Ground Maneuver Within The Israeli Invasion Of The Gaza Strip, Thomas A. Bergeron

LSU Master's Theses

The advancement of open-source (OSINT) and geospatial intelligence (GEOINT) has allowed independent researchers to study human conflict in new ways, with tools that were previously reserved only for state intelligence agencies. In order to advance methodologies, researchers must continue to evaluate new tools to study war.  Valued for its accessibility and moderate spatial resolution, the Normalized Difference Vegetation Index (NDVI) is one such tool that has not been widely systematically tested for its use in an open-source GEOINT investigation of modern conflict. This study tests NDVI as an indicator of military maneuver by leveraging a mixed-method approach against open-source kinetic …

Trustworthy Artificial Intelligence For Real-Time Quality Assurance In Additive Manufacturing, Md Shafikul Islam

LSU Master's Theses

Additive manufacturing requires quality assurance methods capable of detecting process anomalies before defects propagate across subsequent layers. This thesis develops a trustworthy artificial intelligence framework for real-time surface anomaly detection in Fused Deposition Modeling (FDM) using laser-derived depth maps and Vision Transformers (ViTs). Conventional convolutional models aggregate global context gradually through stacked local kernels, which can limit their sensitivity to spatially distributed surface deviations. The proposed approach instead tokenizes depth-map patches and applies global self-attention to classify four process conditions: normal printing, under-extrusion, over-extrusion, and empty or void regions. The framework combines token-level attention visualization, vanilla saliency, Integrated Gradients, and …

Teaching Through Sound: Approaches To The Use Of Fixed Media In Pedagogical Viola Etudes, Roberto C. Mochetti Jr.

LSU Doctoral Dissertations

This dissertation examines the pedagogical possibilities of fixed media in newly composed viola etudes. While fixed media is commonly treated as accompaniment or as a performance medium, this project argues that it can also serve as an active component of technical and musical training. By providing stable and repeatable sonic environments, fixed media can support forms of listening, intonation, sound production, and performer awareness that are difficult to cultivate through traditional etudes alone. This argument responds to a broader pedagogical gap in string training, where long-established etudes and models of technical development remain central even as contemporary viola performance increasingly …

Quantum Geometry Effects In The Very Early Universe And Black Hole Spacetimes, Meysam Motaharfar

LSU Doctoral Dissertations

Loop quantum gravity (LQG) techniques applied to symmetry-reduced spacetimes generically resolve the big bang and black hole interior singularities of classical general relativity. In loop quantum cosmology (LQC), the big bang singularity is replaced with a non-singular quantum bounce connecting the pre-bounce contracting and post-bounce expanding branches, while the black hole interior singularity is, in general, replaced with a smooth finite transition surface yielding a black-hole-to-white-hole transition. In this dissertation, we investigate the implications of quantum gravitational singularity resolution for the physics of the very early universe and black holes within the LQG/LQC framework. In the first part, we show …

Direct Measurement Of Stem Position For Gas-Lift Valves While Flowing At High Pressure, Paulo E. Reitz

LSU Master's Theses

The present work challenges the idea of estimating the gas lift valves true dynamic stem position by providing an alternative capable of tracking the real stem position during flow tests. This is of interest for the improvement of performance determination tests and procedures that involve critical safety concerns, complex training and considerable investments, both in time and money. This scenario, together with the strong interest of industry for valve optimization and the scarcity of works available in literature, encouraged this study. An apparatus named Vision System was developed for tracking and measuring the stem position during flow tests. The developed …

Perpetual Purgatory: Lamennais's Religious Influence On The Persona And Music Of Franz Liszt, Matthew Peter Wood

LSU Doctoral Dissertations

For generations, musicological consensus has treated Liszt’s signature technique of “thematic transformation” as musical form born out of structural and sonic experimentation. This study argues that the impetus for Liszt to create his signature compositional device of thematic transformation proceeds from the influence of the post-Revolutionary liberal Catholicism of the French Abbé Félicité de Lamennais. By exploring the historical, cultural, and artistic intersections between Lamennais’s texts and Liszt’s manuscripts, this dissertation builds on existing scholarship to replace a conventional analysis of thematic transformation with new religio-philosophical analytical lens through which to view Liszt’s most significant contribution to the historical trajectory …

Counted In: Including Female Composers In Orchestral Horn Audition Repertoire, Hope K. Ayers

LSU Doctoral Dissertations

The Institute of Composer Diversity and the Boulanger Initiative focus on music written by composers who have been historically excluded from the profession. The focal point of the Institute of Composer Diversity is discovery, study, and programming of such composers through its database and reports, while The Boulanger Initiative advocates for women and all gender-marginalized composers. Because of limited exposure, incomplete records, difficulty of procuring music, and identified bias, female composers’ orchestral works are underrepresented in orchestral programming. Professional orchestral horn audition repertoire is no different, with professional orchestras, such as the New York Philharmonic, only very recently including a …

Influence Of Genetic Relationships On The Spatial Distribution Of Breeding Eastern Wild Turkeys (Meleagris Gallopavo Silvestris) In West-Central Louisiana, Rachel D. Price

LSU Master's Theses

Eastern wild turkeys (Meleagris gallopavo silvestris) have a complex social system influenced by dominance hierarchies and exhibit seasonal variation in gregarious behaviors. Previous work has examined the influence of kin relationships on interactions between same sex conspecifics and flock associations, but information on how genetic relatedness influences interactions between individuals remains lacking. We constructed a dyad-based social network using high-resolution GPS data from 179 female and 68 male wild turkeys in west-central Louisiana during the 28-day period before a females’ 1^st nest initiation to quantify interaction probability based on genetic relatedness and age. Our findings suggest that …

Cooperative Evolution For Discovering Scalable Spiking Neural Network Architectures, Catherine C. Rodriquez

LSU Master's Theses

SNNs are a foundational model in neuromorphic computing, where efficient architectures must be discovered for a wide range of applications. Evolutionary methods, such as EONS, offer a flexible approach to this search but become increasingly difficult to scale as task complexity grows due to the rapidly expanding combined topology–parameter search space and associated memory demands. To address this challenge, we propose a co-evolutionary ensemble framework in which a population of candidate SNNs is evolved with fitness defined by each network’s marginal contribution to group performance. Grounded in cooperative game theory and difference evaluation functions from multiagent systems, this formulation provides …

An Analytical And Performance Guide To Jake Heggie's Of Gods And Cats And Thought Unspoken For Baritone And Piano, Wenxin Sha

LSU Doctoral Dissertations

This dissertation provides a comprehensive performance guide to two song cycles by Jake Heggie: Of Gods and Cats and Thoughts Unspoken for baritone and piano. This study aims to assist singers in preparing these cycles to achieve an expressive performance that is word driven and, just as Mr. Heggie says “Words first, then music.”

Chapter 1 introduces Heggie’s biography and compositional style, emphasizing his text-driven approach, lyrical melodic writing, and close collaboration with poets and performers. Chapter 2 introduces the poets John Hall and Gavin Geoffrey Dillard, and highlights how their texts shape the dramatic and emotional content of the …

Musical Objects, Territories, And Otherness, Andrew Farrar

LSU Doctoral Dissertations

As the materials that composers work with have become increasingly focused on elements outside traditional pitch relations such as timbre or register, so have their approaches to form. One such stream in modern composition, starting from electronic composers such as Pierre Schaeffer, is the use of ”sound” or ”musical” objects. These materials are marked by their wholistic nature, where qualities such as timbre, density, and con- tour are as important to their identity as pitch relationships. Composers such as Schaeffer, James Tenney, and Denis Smalley have all discussed these sound objects in their writings, though they refer to them under …