Evaluating Fungal Population Response To The Miocene Climatic Optimum: High-Resolution Palynological Insights From The South China Sea And Mcmurdo Sound, Antarctica, Mallory Pilie

LSU Master's Theses

Fungi play key and specific roles in ecosystems, specifically as many have restricted geographic distributions, known host/substrate preferences, and are important local environmental indicators due to their short dispersal distances. This study of fossil fungi from a time interval of pronounced global warming, the Miocene Climatic Optimum (MCO), allows analysis of fungal response to an analogue for future climate change scenarios. The research presented herein is part of a larger project, Fungi in a Warmer World (FiaWW), which is using globally-distributed sediment samples to provide foundational information on fungal community distribution patterns and will provide the first fungi-based climatological reconstructions …

Times Of Crisis: A Comparative Discourse Analysis Of U.S. And Mexican Presidential Rhetoric, Kassandra Gonzalez-Ramos

LSU Master's Theses

Language is a communicative tool that in the possession of politicians holds the power to be persuasive and aggressive, empowering and uniting, or disruptive and dividing. Previous research has relied on numerous methodological approaches to analyze political discourse from different viewpoints to reveal the manner in which politicians as part of political institutions transform and manipulate language. The current investigation performs a critical discourse analysis (CDA) based on the framework developed by Van Dijk (1993,1997) in order to demonstrate the speech act realization in a total of 14 political speeches delivered by American presidents Biden, Trump, and Obama and Mexican …

Watching Sports Online: Evaluating The Viewing Motivations Of Sports Streaming Service Users, Jordan Dove

LSU Master's Theses

With millions of viewers tuning in to sporting events each year, there are many different motivations to analyze as to why there are such a large amount of people involved. More recently, sports streaming services have become a second option for viewers to watch sporting events, creating even more popularity for the sports market. New highs of streaming viewers have been seen with each passing year, as new media continues to take over old traditional media like network television. In 2022, for instance, streaming service viewership surpassed cable tv and broadcasts (Nielsen, 2022), creating a turning of the tide. Many …

Cannabis Use Across The Menstrual Cycle: The Impact Of Negative Affect And Coping Motives, Paige Morris

LSU Master's Theses

Women appear to use more cannabis during the premenstrual and menstrual phases of the menstrual cycle, presumably because women use cannabis to manage increases in negative affect associated with these phases. Yet little work has tested this hypothesis or examined individual difference variables associated with greater coping-motivated cannabis use. The current study tested whether state negative affect interacts with coping motives to predict greater cannabis use during the premenstrual and/or menstrual phases and whether trait anxiety or difficulties with emotion regulation moderate these relations. Female undergraduate students with regular monthly menstrual cycles and who were not using hormonal contraceptives ( …

Essays On The Economics Of Health And Education, Thao Bui

LSU Doctoral Dissertations

This dissertation consists of three chapters on the economics of health and education. In Chapter 2, I examine the effect of prenatal exposure to Agent Orange, a dioxin- contaminated herbicide that was dispersed on a large scale in South Vietnam for military operations during the Vietnam War, on educational attainment of Vietnamese civilians. The identification strategy exploits province-by-cohort variation in the intensity of Agent Orange sprayed. I find that controlling for conventional bombing, cohorts exposed in utero to Agent Orange (who were born between 1962 and 1971) have lower educational attainment compared to other birth cohorts. The same inference is …

Domain Specific Analysis Of Privacy Practices And Concerns In The Mobile Application Market, Fahimeh Ebrahimi Meymand

LSU Doctoral Dissertations

Mobile applications (apps) constantly demand access to sensitive user information in exchange for more personalized services. These-mostly unjustified-data collection tactics have raised major privacy concerns among mobile app users. Existing research on mobile app privacy aims to identify these concerns, expose apps with malicious data collection practices, assess the quality of apps' privacy policies, and propose automated solutions for privacy leak detection and prevention. However, existing solutions are generic, frequently missing the contextual characteristics of different application domains. To address these limitations, in this dissertation, we study privacy in the app store at a domain level. Our objective is to …

Chinese Folk Song Meets Western Compositional Technique—A Case Study Of Zhou Long’S The Partita For The Violin And The Piano, Bo Wu

LSU Doctoral Dissertations

In the field of contemporary Chinese music, a large number of outstanding composers and works have emerged in China. As one of the most prominent Chinese American composers, Zhou Long has created many excellent pieces that combine Chinese national elements with world-class composition techniques. These contributions have helped promote Chinese music on the global stage. Zhou Long possesses profound creative skills, with a deep understanding of both Chinese national modes and Western composition techniques. By applying these skills and techniques to his works, he has developed a unique style that integrates Chinese national features with modern music concepts and techniques, …

Dose Calculation And Prediction Methods For Gamma Knife Stereotactic Radiosurgery, Payton Hayes Stone

LSU Doctoral Dissertations

Implementation of automation routines leveraging deep learning (DL) methods has been a growing topic of interest. The focus of this work is on the Gamma Knife (GK) workflow, specifically the approximation of dose distributions from GK plan parameters and the prediction of dose distributions using DL. These works contribute towards the larger goal of treatment plan prediction and are seen as intermediate steps towards that end. The approximation of dose distributions was motivated by the closed nature of the GK system, which causes complications with the evaluation of the predictions made by the DL models. The approximation utilizes a superposition …

The Abolitionist Spectator: Resistant Readings Of Punishment, Rehabilitation, And Reform At The Louisiana State Penitentiary, Kathryn Marie Morris

LSU Doctoral Dissertations

For the majority of the twenty-first century, Louisiana has been the global leader in rates of incarceration. Despite its prevalence, many people encounter prisons and punishment only through representations in movies, television, and the news, remaining distant from the actual processes of punishment and prisons built in remote areas. The Louisiana State Penitentiary at Angola, however, is unique in the number of opportunities it presents for the public to enter the prison for large-scale events like the famous Angola Prison Rodeo, select drama club performances, or to visit the Angola Prison Museum. These opportunities are often read cynically, as moments …

Performance Anxiety In Young Musicians: A Case Study Of Music Educators' Experiences, Carmen L. Rodriguez

LSU Doctoral Dissertations

Anxiety is a common emotional reaction in musicians that can negatively influence their performance. Some studies have proved that Music Performance Anxiety (MPA) can be found not only in adults but also in adolescents and children from 3 years old. Since MPA is a significant aspect of musicians’ development, it is essential that music educators take preventive action against MPA in young musicians, specifically under 18 years old. The purpose of this study is to examine the strategies used by music educators to address MPA in young musicians. Educators were interviewed regarding musical performance anxiety and its presence within their …

Evaluating Form And Function Of Groundcovers And Their Environmental Impacts In Louisiana Landscapes, Thomas Maxwell Mckeown

LSU Master's Theses

Increasing environmental concerns are encouraging the adoption of sustainable landscapes that have environmental, social, and financial benefits. Ornamental groundcover systems are touted as sustainable landscape features due to the associated decreased demand of water, fertilizer, pesticide, and maintenance; however, limited research exists on soil property effects, planting density, weed density, or consumer preferences of groundcovers. This study was aimed to gain a more thorough understanding of ornamental groundcovers systems and their environmental impacts. The effects of groundcover growth habit (matting; bunching) and irrigation delivery (micro spray; overhead) on soil temperature, volumetric water content (VWC), and electric conductivity (EC) along with …

A New Test Of The News: An Examination Of The New York Times And Cnn Coverage Of The War In Ukraine, Hannah Ross

LSU Master's Theses

Russia launched a military invasion of Ukraine on 24 February 2022, setting off Europe’s largest war since World War II. The war captured the attention of American news organizations, which gave the conflict unprecedented levels of coverage. This thesis tested the coverage of the war in Ukraine by two major American news outlets: The New York Times and CNN. This study used qualitative content analysis to examine the top four front-page stories of the Times and CNN Newsroom show. Two timeframes were used to analyze these materials: February 24, 2022, to March 9, 2022, and September 17, 2022, to September …

Snow Distribution And Influence In Taylor Valley, Antarctica, Using Remote Sensing, Katherine Mcnulty, Peter Doran, Mark Salvatore, Suniti Karunatillake

LSU Master's Theses

The McMurdo Dry Valleys is the largest ice-free area in Antarctica, but seasonal snow covers the valley floors sporadically throughout the year. In this study, a model to estimate areal snow coverage from satellite imagery was created. An area-volume model was created to estimate the amount of snow water equivalent (SWE) from the snow area extracted from the imagery. Snow cover influences the total albedo, the hydrologic budget, and the soil moisture and soil temperature in Taylor Valley (TV). Quantifying snow precipitation in TV is challenging because snow redistributes with winds, sublimates, or melts within a short period. Previous estimates …

Examining Framing Of Local And National Media Coverage Of Sandy Hook And Robb Elementary School Shootings, Gabrielle L. Debruler

LSU Master's Theses

There have been over 350 K-12 school shootings since the shootings at Columbine High School in 1999 (Cox et al., 2023). Thousands of journalists cover these attacks each in their own way with unique motives. This information goes to the public, and it is up to that person how they want to consume the story and view the shooting. National and local journalists tend to cover school shootings quite differently throughout time with unique frames. The shootings at Sandy Hook Elementary and Robb Elementary Schools illustrate this framing distinctively.

Through a qualitative study of national and local coverage of the …

Exploring The Interactive, Linguistic, And Conceptual Dimensions Of Parent Input And Their Role In Children's Pragmatic Development, Nickolas T. Day

LSU Master's Theses

The development of children’s pragmatic language, which can be defined as conversational competence in social contexts, has been attributed to variation in the language they hear in their environment. When studying the impact language input has on pragmatic development, it is important for clinicians and linguists to measure both the quantity and quality of this language input. Measures of quality, however, are much more relevant when studying the development of pragmatic language, as discussed in Zhang (2020) and Hirsh-Pasek et al. (2015). Rowe and Snow (2016) discussed three dimensions of language quality: interactive, linguistic and conceptual. There is a current …

Deposition, Material Characterization, And Mechanical Testing Of Cr Containing Diamond-Like Carbon Films, Nicholas Anderson

LSU Master's Theses

A series of amorphous hydrogenated chromium containing diamond-like carbon films were deposited on 316 stainless steel substrates with a chromium interlayer through inductively coupled plasma assisted direct current magnetron sputtering. Details on the deposition process of these films are discussed. The film is characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, energy dispersive spectroscopy, and transmission electron microscopy. The coating hardness and indentation modulus is measured by instrumented nanoindentation. The coefficient of friction and the upper bound of the coating wear coefficient is measured using the pin-on-disk method. The fracture toughness of the diamond-like carbon film and a …

The What And When Of Psychomotor Retardation: A Multimodal Approach, Ole Edvard Granrud

LSU Master's Theses

Psychomotor retardation (PMR) is a diagnostic criterion that reflects a gross slowing of movement, speech, and thought. More so, PMR is a transdiagnostic, pervasive source of impairment and distress that can be observed across disorders, such as Major Depressive Disorder (MDD), Schizophrenia (SZ), and Bipolar Disorder (BD). In clinical settings, PMR is associated with more severe psychopathology and is used to both inform treatment and predict long-term treatment outcomes. However, despite being clinically meaningful, PMR is poorly understood and is often conceptualized as a motor disturbance that happens in isolation from, rather than concurrently with, higher-order cognitive-emotional processes – such …

Mapping, Modeling, And Predicting Extreme Flood Events With Cloud Computing, Dan Tian

LSU Doctoral Dissertations

Floods represent one of the most severe natural disasters worldwide. It is crucial to accurately assess flood hazards to mitigate the impact and enhance community resilience. This study focuses on three key components of flood hazard management, including (1) flood frequency estimation, (2) inundation delineation, and (3) flood susceptibility assessment. The first project presents a Bayesian Log-Pearson Type III model with Spatial Priors (BLP3-SP) that utilizes spatial regression priors to enhance the accuracy of flood frequency estimation for sites with limited data. The method is compared with two other algorithms with different priors. The results indicate that BLP3-SP performs the …

Blockchain Accelerators And An Application On Covid-19 Contact Tracing, Tao Lu

LSU Doctoral Dissertations

Blockchain technology has been an emerging technology in recent years. Its nature of decentralization and anonymity enables many applications to be built in a trustless environment but can still be validated and agreed upon by all the participants. Ever since the invention of blockchain technology, its concepts and forms are explored extensively, and it has shown the potential to be used in many industries. However, the low efficiency and the poor performance have prevented the technology to be adopted in practical largescale usage. In this dissertation, we present three major works around blockchain technology. The first one is BPU, an …

Exploring The Effects Of Individuals’ Perceived Prototypicality Within A Fandom, Keely Diebold

LSU Master's Theses

Passionate fandoms centered on popular film and television series can elicit large-scale positive fan activity. At the same time, however, negative consequences can arise as factions or subsets of members with varying opinions arise within fandoms. One possible explanation for this phenomenon is varied levels among fandom members of how prototypical they view themselves within the context of that fandom. Research on social groups, however, has historically looked exclusively at perceptions of others' prototypicality and not of the self. Drawing on theories of social identity (SIT) and self-categorization (SCT), this project serves to bridge this research gap by exploring to …

The Nature And Role Of Phenomenology In Hegel And Heidegger, Gabriel W. Connor

LSU Master's Theses

In this work I compare Hegel and Heidegger’s conception of phenomenology and its role in their thinking. Though these two thinkers are not often examined from this angle, and though there is controversy surrounding just how phenomenological each thinker might actually be, an examination of the two thinkers in this regard serves to identify interesting connections between Hegel and Heidegger while also raising questions about phenomenology in general. In short, I seek to establish that phenomenology in both Hegel and Heidegger is not adequately understood unless it is placed in the context of each thinker’s conception of human freedom along …

News(?)Papers: A Typology Of Fake News, 1880-1920, Olivia G. Romaguera

LSU Master's Theses

“Fake news” is a malleable concept. It can be beaten and reshaped to fit many different contexts. One widely accepted definition of fake news is false information purporting itself to be factual. Another is information that is factual but called “fake” in order to discredit it. Concern over the spread of fake news increased in recent years. But preoccupation with what is happening today has left a gap in our understanding of the phenomenon, specifically its roots in the past. “Fake news” was present when news technology was relatively primitive; it is not essentially a function of such modern advancements …

Natural Lights & Natural Rights: The Problem Of The New Classical Natural Law Theory, Charles Neville Cacciatore

LSU Master's Theses

The present work examines the natural law jurisprudence of John Finnis. It argues that Finnis’s teaching is a genuinely new natural law theory. Finnis’s jurisprudence is not a re- presentation of the jurisprudence of St. Thomas Aquinas because its central element—a doctrine of natural rights—is a departure from Aquinas’s natural law teaching. In support of these claims, the present work relies upon the scholarship of Ernest L. Fortin, A.A. Following Fr. Fortin, it presents an understanding of the natural law that endorses a clear distinction between natural right and natural rights—between premodern political philosophy and modern political philosophy.

Switch-Like Behavior Of Lysosomes And Vcp Supports Spermatocyte Health And Development In Drosophila, Tyler James Butsch

LSU Doctoral Dissertations

Changes to societal norms, such as the educational, marital, and child-bearing expectations have coincided with significant increases in infertility worldwide. Surprisingly, male infertility is responsible for approximately half of all infertility cases worldwide. Thus, a better understanding of sperm development, and how it is affected by age, may permit the design and application of therapeutics to treat various cases male infertility. Here, I have found that lysosomes acidify as germ cells enter the spermatocyte stage. Once active, lysosomes turn over E-cadherin, and likely other proteins, to support plasma membrane stability. Notably, aging negatively impacts lysosome acidification, which can be reversed …

Svip Dependent Tubular Lysosomal Restoration: A New Direction In Vcp Diseases, Ankita Basu

LSU Doctoral Dissertations

Multisystem Proteinopathy-1 (MSP-1) is a rare, autosomal dominant, degenerative disease resulting from single amino acid mis-sense mutations in the AAA+ ATPase, Valosin containing protein (VCP). Patients with VCP mutations vary widely in their pathology and clinical penetrance, making it difficult to devise effective treatment strategies. To investigate the pathology of VCP- related disease, we engineered CRISPR knock-in Drosophila models for nine MSP-1 associated VCP mutations. These mutant animals mimic human MSP-1 disease phenotypes, including progressive mobility decline and accumulation of protein aggregates, making them excellent models to study the pathology of VCP associated mutations and test potential treatment strategies. At …

Improving Teacher Intervention Decisions Using The Fraction Error Flowchart, Katherine Pettrey

LSU Doctoral Dissertations

In the U.S. the fifth-grade mathematics curriculum is largely devoted to building fraction skills, providing an essential foundation for future success in mathematics (National Mathematics Advisory Panel, 2008). Unfortunately, students in the U.S. struggle with fraction proficiency (National Assessment of Educational Progress, 2022; Organisation for Economic Co-operation and Development, 2018). Even when teachers facilitate interventions for struggling students those interventions may not be aligned with student need (Riccomini, 2005). Additionally, teachers struggle to identify research-based practices (RBPs) when presented with student data (Means et al., 2009). The purpose of this study was to create and test a flowchart that could …

Is There A Balance Between The U.S. Government Secrecy Regime And Free Speech Rights Of Government Employees?: The Legal Landscape Of The U.S. Government Control Of Information, Qinqin Wang

LSU Doctoral Dissertations

This dissertation explores the tension between the U.S. government’s control of information and government employees’ claims to free speech rights. The U.S. government prepublication review is a censorship system that requires former and current federal government employees to submit any materials intended for publication to their agencies for prior review before they attempt to make any external communication or proceed with any publications. The prepublication review regime has become an essential means by which the U.S. government controls internal information, and has long been controversial because of its censorship nature. Specifically, this dissertation focuses on legal disputes between the U.S. …

Health Service Utilization And Conduct Problems: The Role Of Callous-Unemotional Traits And Juvenile Justice System Processing, Julianne Speck

LSU Master's Theses

Previous research indicates that youth with conduct problems, who are overrepresented in the juvenile justice system, are at risk for utilizing a disproportionate amount of health services compared to youth without these problems. The present study investigates self-reported antisocial behavior, juvenile justice system processing type, and callous-unemotional (CU) traits as predictors of health service utilization (medical and mental health service use and out-of-home placement) across adolescence in a sample of justice-involved males from the Crossroads Study. A total of 766 participants provided data at ten appointments over a period of seven years. A series of linear multiple regressions were used …

Evaluating Attitudes Toward Non-Formal Science Education Programs Among High School Science Teachers In Southeast Louisiana, Heather Egger

LSU Master's Theses

Abstract

The Louisiana Department of Education (LDOE) has begun implementing Louisiana Student Standards for Science (LSSS), as well as developing high school science certification programs. The LDOE recognizes that teaching science using three-dimensional learning methods and phenomena based inquiry learning will be a challenge that would be addressed in part by partnerships between formal science teachers and nonformal science education programs. However, limited available information on this topic shows that utilization of nonformal science education opportunities by science educators has declined and, in some instances, have been relegated to unstructured “fun” outings to reward students, often after the final quarter …

Did The Rapid Transition To Online Learning In Response To Covid-19 Protocols Result In Forced Disclosure By Faculty Members With Invisible Disabilities, Charles Edward Ethridge

LSU Doctoral Dissertations

In December of 2019, the SARS-CoV-2 virus, now commonly referred to as COVID-19, was first identified in Wuhan, China. The virus proved highly contagious and quickly spread around the globe. By April 7, 2020, Stay-at-Home orders and/or directives regarding the closures of non-essential businesses and schools had been issued throughout the US. While there has been considerable research since 2020 regarding the impact of COVID-19 on higher education, nearly all the research has focused on the effects on students, the economic impact on institutions, and the future landscape of higher education. However, there is little research regarding the effect on …