Digital Commons Network^™

Exploring Consumer Value Of Certified Sustainability Labels Of Local, Independent Versus National Coffee Brands, Mary Olivia H. Broussard

LSU Master's Theses

Local, oftentimes independent, coffee shops in the US now measure over 38,000. These shops must differentiate themselves from chain coffee brands in order to compete in the bagged coffee market. Research shows consumers value certified labels, and these labels have the potential to help differentiate independent shops. This paper will look at coffee drinkers’ willingness to pay for certifications (Fairtrade, USDA Organic, Rainforest Alliance, Carbon Trust) and how it differs between national brands (Dunkin, Folgers, Starbucks) and a local provider specified by the individual respondent. Data collection took place in spring of 2024. Results indicated a preference for branded bagged …

Molecular-Level Studies Of Nanopatterned Biomolecules With Atomic Force Microscopy, Ashley R. Walker

LSU Doctoral Dissertations

Atomic force microscopy (AFM) is an analytical technique in which a tipped probe is gently scanned across the surface in a raster pattern to generate digital images of a sample at the nanoscale. The AFM instrument has three general operational modes, which are contact, non-contact and tapping-mode, that can be used to examine materials at the atomic level. Single-molecular details of biological molecules and other soft organic materials can be captured with minimal denaturation in either ambient or liquid environments when using tapping-mode AFM. In tapping-mode, the probe is driven to oscillate vertically while the tip is scanned across the …

Comparing Editorial And Artificially Generated Fingerings: A Case Study, Lixi Qin

LSU Doctoral Dissertations

Fingering is crucial for piano performance. Unlike other instruments with relatively fixed fingerings, keyboard instruments offer countless fingering combinations. As musical styles have evolved, so too have the instruments themselves, resulting in a rich history of diverse fingering systems, which sometimes conflict with one another. Moreover, due to individual differences in hand shape and size, the fingering advice from editors or teachers may not be universally applicable, and there is a lack of an objective, unified standard for validating these recommendations.

For students who do not fully understand fingering principles and have not been exposed to a wide range of …

Farmer's Adaptive Capacity And Adoption Of Strategies To Climate Change Among Mountain Communities In Nepal, Tanvir Hossain

LSU Master's Theses

Climate change presents significant challenges to agriculture worldwide, particularly where farming is central to livelihoods. This phenomenon has been linked to decreasing crop yields due to rising temperatures and reduced rainfall, particularly affecting low-income countries with limited adaptive capabilities. Grasping how farmers perceive climate change is essential for developing effective adaptation strategies to lessen its adverse impacts. This study concentrated on investigating the perceptions and adaptive strategies employed by smallholder farmers in Nepal's Mustang district, utilizing primary data sources. Data from 131 randomly selected households were gathered through structured interviews, while focus group discussions provided qualitative insights into farmers' views …

Veneers And Vignettes: Staging The Mountain West, Matthew Jones

LSU Master's Theses

Veneer (noun): An attractive appearance that covers or disguises someone or something's true nature or feelings.

Vignette (noun): A small illustration or portrait photograph which fades into its background without a definite border.

This exhibition, Veneers and Vignettes: Staging the Mountain West embodies my pursuits to contextualize my place in the Mountain West, my home. These works seek to understand how the extents of time, circumstance, and people have shaped the contemporary cultures, environment, and implied trajectory of the decades ahead. What legacies have we imprinted upon this place and with what repercussions? I feel uneasy for my home in …

An Analysis Of William Bolcom's "Three Classical Rags", Thomas A. Owens

LSU Doctoral Dissertations

This document aims to provide insight into William Bolcom’s Three Classical Rags through harmonic and formal analysis of each rag, investigating the ways in which they fulfill or subvert the expectations of ragtime. The study begins with a description of the harmonic language, form, and metric structure typical of ragtime composers like Scott Joplin and Joseph Lamb. Examples of rags that maintain these characteristics are The Entertainer by Joplin, Heliotrope Bouquet by Louis Chauvin and Joplin, and Top Liner Rag by Lamb. Analysis of Bolcom’s Three Classical Rags ensues, exploring the ways they both honor and subvert the expectations …

Preserving The Historic And Cultural Music Of Louisiana Through School Music: An Ethnographic Case Study, Christopher S. Song

LSU Doctoral Dissertations

The purpose of this ethnographic case study was to examine the lives of teachers, students, community members, and culture bearers within a musical community located in South Central Louisiana. The geographic area of focus in this research was Vermilion Parish and its surrounding area, known as Acadiana, the heart of Creole and Cajun culture where Traditional Louisiana Music finds its origins. Participants’ intrinsic cultural understandings of Louisiana’s music and impact on school music programs was examined through ethnographic interview and observation. A resource pedagogy known as funds of knowledge was used as a theoretical framework meant to maintain participants’ intrinsic …

Scaling The Wall: Math Attitudes And Mindsets Of Middle School High-Achievers, Stephanie R. Gullage

LSU Doctoral Dissertations

This intrinsic case study examined groups of gifted and high achieving middle school mathematics students in one school’s advanced and honors program. The purpose of this study was to determine how the students view themselves in light of noncognitive constructs, how they regard and apply those constructs in their mathematics studies, how the work of those constructs can affect their attitudes toward mathematics, and how they believe educators can help foster success in math via noncognitive factors. The researcher employed a questionnaire, observations, focus group interviews, and interviews with key informants to gather study data. With the theoretical lenses of …

Sexual Abuse: A Multi-Faceted Problem, Marcus Venable

LSU Doctoral Dissertations

On average, US citizens have experienced approximately 400,000 sexual assaults per year, which results in enormous immediate and long-term consequences for individuals, as well as society in general.

In the U.S., the principal method of combatting this crime has been the creation of Sex Offender Registries used to notify the public of the identity and location of convicted sex offenders who may be living in proximity to their residence. In addition to the Registry, laws have been passed forbidding convicted sex offenders from residing within buffer zones around areas of high child concentration [schools/parks/etc.].

The efficacy and consequences of these …

The Influence Of Stage Of Ripeness On Consumer Perceptions Regarding Selected Aspects Of Non-Astringent Asian Persimmons (Diospyros Kaki Thunb), Robert A. Mirabello Jr

LSU Doctoral Dissertations

Asian Persimmon (Diospyros kaki Thunb.) is an important fruit crop in Asia and in recent decades has experienced expanding production around the world. Non-astringent cultivars are highly desirable in world markets. In the United States the Asian Persimmon is lesser known and consumed although it can be successfully grown in California and the Southeastern United States.This novel study examined the physical/chemical properties of the non-astringent Asian Persimmon ‘Jiro’ grown in Southern Louisiana at three distinct stages of ripeness described as Green (mid-September harvest), Light Orange (mid-October harvest) and Dark Orange (mid-November harvest). Data collected included color, weight, size, soluble …

Pregnant Black Bodies In Peril: A Multi-Method Analysis Of Obstetric Outcomes And Gestational Experiences, Courtney E. Williams

LSU Doctoral Dissertations

My multi-method three-paper dissertation provides a better understanding of the relationship between maternal racial identity, obstetric outcomes, and gestational experiences. Using birth certificate data from the 2016 U.S. National Vital Statistics System and binary logistic regression models, in the first paper I explore heterogeneity in severe maternal morbidity (SMM) by maternal race, maternal education, and maternal age. To complement the first paper, in the second paper I allow 35 Black and White women/birthing people to describe pregnancy, birth, and early motherhood in their own words. I situate the Covid-19 pandemic as a unique cultural backdrop in this qualitative paper to …

Identifying Self-Efficacy Factors Of Agriscience Teachers When Working With Supervised Agricultural Experiences For Students With Disabilities, Saralyn L. Smith

LSU Master's Theses

The number of students receiving disability services annually in the U.S. has increased in the last decade. Even with this growing population of students with disabilities, research continues to show a lack of confidence of School Based Agricultural Education (SBAE) teachers in their ability and skills to include these students. The purpose of this qualitative study was to describe the factors that influence how SBAE teachers support students with disabilities in Supervised Agricultural Experience Programs and identify perceived obstacles SBAE teachers have regarding working with students with disabilities. Semi-structed interviews were conducted with twelve SBAE teachers to understand their lived …

Learning Proximal Operators With Gaussian Process And Adaptive Quantization In Distributed Optimization, Aldo Duarte Vera Tudela

LSU Doctoral Dissertations

In networks consisting of agents communicating with a central coordinator and working together to solve a global optimization problem in a distributed manner, the agents are often required to solve private proximal minimization subproblems. Such a setting often requires a further decomposition method to solve the global distributed problem, resulting in extensive communication overhead. In networks where communication is expensive, it is crucial to reduce the communication overhead of the distributed optimization scheme. Integrating Gaussian processes (GP) as a learning component to the Alternating Direction Method of Multipliers (ADMM) has proven effective in learning each agent's local proximal operator to …

Decay Spectroscopy Of 134sb Using X-Array And Saturn, Graeme E. Morgan

LSU Doctoral Dissertations

The ground-state decay of ¹³⁴Sb is reported by the current evaluated nuclear data to be dominated by a 0^-→0⁺ first-forbidden Gamow-Teller transition to the ground state of ¹³⁴Te. In 2013, a recoil-ion time-of-flight (RI-TOF) spectroscopy measurement of ¹³⁴Sb with the Beta-decay Paul Trap (BPT) indicated that the ground-state feeding of ¹³⁴Te is weaker than reported. Simulation work of ¹³⁴Sb ground-state decays replicated the RI-TOF results with the addition of a theorised 5-MeV state that was fed with ~17% of the total β-decay strength. To search for higher energy states and transitions that …

Optics Design And Fabrication For A Lung Interferometry-Radiography System, Rachael Lyn Blair

LSU Master's Theses

Purpose: High prevalence of lung diseases leads to many people worldwide needing spirometry and imaging testing. The typical imaging done uses chest radiography and/or low-dose CT. Lung tissue is difficult to visualize, making them substandard for monitoring lung disease progression. An improvement on these systems is x-ray interferometry which produces additional images that provide better visualization of changes in the lung tissue. The set-up of x-ray interferometry builds upon other imaging systems in that it includes diffraction gratings.

Materials: This thesis focused on implementing the fabrication processes to create diffraction gratings for a lung imager prototype that is currently under …

It’S Britney, Bitch, Mary Hyepock

LSU Doctoral Dissertations

This dissertation engages public rhetorics surrounding pop princess Britney Spears as a case study for examining the rhetoricity of bodily autonomy. Bodily autonomy is commonly understood as the legal right to control what happens to one’s body without external influence or coercion. However, one’s legal access to bodily autonomy is produced, negotiated, and maintained through discourse. In other words, one’s access to so-called “ownership” over their body and agency to make decisions about it is deeply tied to the gendered and racialized symbolic production of citizenship in the United States. Utilizing a reproductive justice framework, I investigate how Britney Spears’ …

Vibrato Rate And Extent In The Baritone Voice Through The Twentieth And Early Twenty-First Century, Scott Purcell

LSU Doctoral Dissertations

Observations of vibrato rate and extent through the twentieth and early twenty-first century point to an overall decrease in rate and increase in extent. This descriptive analysis studied fifty-five randomly selected recordings of professional operatic baritones, five from each decade from 1910 to 2021, and analyzed their vibrato rate and extent with VoceVista Video Pro. Results showed a consistent decrease in mean vibrato rate from 1910 to 1960, with small increases and decreases from 1960-2021. Vibrato extent was less consistent, but still increased from 1910-2021. The mean vibrato rate was 5.84 Herz (Hz), with a coefficient of variation (CV) of …

An Analysis Of The Musical Gestures In Osvaldo Golijov’S The Dreams And Prayers Of Isaac The Blind And Their Relationship To The Kabbalah Sefirot, Jeremy Gdaniec

LSU Doctoral Dissertations

Osvlado Golijov’s The Dreams and Prayers of Isaac the Blind, scored for klezmer clarinet and string quartet, remains one of his most influential works since its premier in 1994. Inspiration for the work came from the writings of Rabbi Isaac the Blind, a prominent 13^th century figurehead in the branch of Jewish mysticism known as Kabbalah. In Kabbalah, symbols known as the sefirot are emanations of creation and the key to unlocking the divine secrets of the God-head. The analysis presented in this document combines musical gesture theory with Kabbalistic concepts for new perspectives on Golijov’s …

Impact Of Early-Season Postemergence Co-Applications Of Foliar And Residual Herbicides On Crop Injury, Growth, And Yield In 2,4-D- And Dicamba-Tolerant Cotton (Gossypium Hirsutum L.), Logan N. Vallee

LSU Master's Theses

Studies were conducted in 2021 through 2023 at the LSU AgCenter Dean Lee Research and Extension Center near Alexandria, LA to determine the sensitivity of 2,4-D- or dicamba- tolerant cotton (Gossypium hirsutum L.) to an early season application of a Group 15 and foliar-only herbicides. Both studies were randomized complete block designs with a two-factorial arrangement of treatments with four replications. In the dicamba-tolerant cotton study, Factor A consisted of no foliar-herbicide, dicamba alone, glyphosate alone, or dicamba plus glyphosate. Factor B consisted of either no Group 15 residual herbicide, acetochlor, or S-metolachlor. In the 2,4-D- tolerant cotton …

Molybdenum Alkylidyne Complexes With Phenoxide Ligands For Alkyne Metathesis, Marvin L. Stewart Jr

LSU Doctoral Dissertations

Abstract

Alkyne metathesis is a powerful synthetic tool, which provides easy access to complex organic molecules in a single-step. It is a dynamic covalent reaction that scrambles alkynes, carbon-carbon triple bonds (C≡C). Molybdenum- or tungsten-alkylidyne (Mo≡C, W≡C) complexes are typically used as catalyst to cleave and reform alkyne bonds. Our goal has been to gain a deeper understanding of the intrinsic differences between functional ligands by the development of novel phenoxide ligands.

In chapter 2 we explore the detailed synthesis of novel phenoxide podand ligands in an effort to identify their mo-alkylidyne complexes. We were able to synthesize a variety …

The Lowest Discriminant Ideal Of Cayley-Hamilton Hopf Algebras, Zhongkai Mi

LSU Doctoral Dissertations

Discriminant ideals are defined for an algebra R with central subalgebra C and trace tr : R → C. They are indexed by positive integers and more general than discriminants. Usually R is required to be a finite module over C. Unlike the abundace of work on discriminants, there is hardly any literature on discriminant ideals. The levels of discriminant ideals relate to the sums of squares of dimensions of irreducible modules over maximal ideals of C containing these discriminant ideals. We study the lowest level when R is a Cayley-Hamilton Hopf algebra, i.e. C is also a Hopf subalgebra, …

Ammonium Chemotaxis In Chlamydomonas Reinhardtii, Gabela Nelson

LSU Doctoral Dissertations

Analysis of ammonium chemotaxis in Chlamydomonas reinhardtii is largely hindered, compared to that of phototaxis, despite equal importance on flagellated microalgal physiology. A major contribution of this shortfall is the lack of proper assay method. We developed a simple Petri dish assay method in which light is homogenously exposed while patterns of the cellular migration are tracked with a function of time. Using the method, new findings were revealed. First, this research presented that a strain lacking the eyespot organelle required for light gradient-sensing exhibits similar chemotactic behavior compared to a wild-type strain, suggesting Chlamydomonas sense an ammonium gradient not …

A Feasibility Study Of Drilling Fluid Slippage For Wellbore Displacement, John Johnson

LSU Master's Theses

In the ideal plug-flow mode viscoplastic drilling fluids display uniform frontal velocity due to wall slippage (at very low flowrate limited by the fluid’s yield strength). The flow rate could be increased by raising the yield strength that would make the fluid best candidate for frontal displacement. Based on this concept the study qualifies wall slippage effect for wellbore displacement. Using a conceptual model of fluid motion between two parallel plates defines maximum velocity as a function of shearing rate and yield stress. Conversion to coaxial geometry gives practical formulas for fluid testing with rotational viscometer. A new analysis of …

Research On 3d Printing Resin Exposure Properties And Its Application On Centrifugal Microfluidic Platform Based On Fluorescence Detection, Zheng Qiao

LSU Doctoral Dissertations

This dissertation encapsulates significant advancements in the field of SLA 3D printing and centrifugal microfluidics. Central to the research is the development of a novel mathematical model for predicting trapped resin thickness in SLA 3D printing, a groundbreaking contribution that addresses a critical aspect of printing intricate structures. This model, the first to establish a mathematical relationship for resin thickness, is rooted in a comprehensive study of the resin curing process. The research leverages the concept of 'critical dosage' for resin curing, leading to a more refined and theoretically grounded approach for calculating curing thickness. Experimentation further validates the model, …

“Everything Is Not What It Seems”: Discovering Public Relations In Business Sectors In Vietnam, Ba-Anh-Tu Truong

LSU Master's Theses

Vietnam is a shining star in emerging markets, with an annual economic growth rate of 6-7%. Its abundant labor supply, stable political climate, and geographic proximity to major global supply chains make it an ideal candidate for manufacturer planning in advanced economies such as the United States, Europe, Australia, Japan, China, and Korea. Investing in public relations and communication management, especially understanding the Vietnamese market, effectively prepares multinational corporations for future business expansion. This mission is difficult for academia and industrial professionals since Vietnam is a “silent country” in public relations research. To fill the gap, this thesis employs the …

Seeking A Uniform Approach To Trumpet Sound Concept, Coleman T. Scott

LSU Doctoral Dissertations

One of the most challenging aspects of trumpet playing that pedagogues must teach is how to produce a professional tone. Trumpet students are often good musicians, play correct notes and rhythms, and even have proficient technique. However, many are unable to consistently produce a tone comparable to that of a professional. There are a number of methods that can be utilized to improve a student’s tone quality. In my own teaching and in the teaching of many professionals, tone concept has been used as a catalyst for the improvement of tone quality. A students’ exposure to a professional-quality trumpet tone …

Building The Church Of San Vitale In Ravenna, Italy, Sally S. Morgan

LSU Master's Theses

This thesis uses the evidence concerning the design and building of the Church of San Vitale in Ravenna to reconstruct, as far as it is possible, the sequence of decisions, activities, and methods that led to the construction of the church, made of bricks and mortar, and whose interiors are covered by glorious colored mosaics and marbles. The historiography on the Church of San Vitale begins with the historian Agnellus, who wrote the Liber pontificalis ecclesiae Ravennatis in the 830s to 840s. According to Agnellus and other sources, the Church of San Vitale was founded by Bishop Ecclesius around 525, …

Post-Modeling Adjustments And Delivered Dose Verification Of The 6fff Beam Model Commissioned For The Monaco Treatment Planning System, Grant C. Debevec

LSU Master's Theses

External beam radiation therapy has been shown to be an effective treatment method for tumors and abnormalities of the spine and vertebral region. Treating the spine using a stereotactic body radiation therapy (SBRT) technique can reduce toxicity to the spinal cord. The 6 MV flattening filter free (6FFF) beam model is currently used to plan and calculate dose for SBRT treatment plans, and the treatment plans are delivered using a linear accelerator (LINAC).

The commissioned beam model represents an invariant component of a LINAC. For volumetric modulated arc therapy (VMAT) treatment plans, the multileaf collimator (MLC) positions are changing throughout …

All-Optical Probes Of Particle-Like Charge Migration Dynamics, Kyle A. Hamer

LSU Doctoral Dissertations

Particle-like charge migration (CM) is the coherent, back-and-forth motion of a positively-charged electron hole along the backbone of a molecule following a sudden ionization. CM in small molecules generally occurs on an Angstrom (10^-10 m) spatial scale and an attosecond (10^-18 s) timescale. I use time-dependent density-functional theory (TDDFT) to simulate CM modes in organic molecules, and to explore all-optical probes of this attosecond electron dynamics using high-harmonic spectroscopy (HHS). By leveraging my results from previous studies of two-center interferences in carbon dichalcogens, in which I separated the harmonic signal into contributions from individual Kohn-Sham orbitals, I first …

The Oracle Of The Pig's Head, Taylor L. Denton

LSU Master's Theses

The Oracle of the Pig’s Head is a collection of two poems, a short story, and a novel centered around themes of the role of the feminine body in society, monstrosity, disgust, divinity, and human impact on the environment. Inspired by other works of eco-criticism, gothic literature, surrealism, Appalachian folklore, and Greco-Roman mythology, this collection explores how marginalized bodies interact in a world forever altered by climate change.

Denton is primarily interested in how severe climate change has influenced not only human’s overall relationship to the environment, but also how writers are meant to engage with a world riddled with …