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Effects Of Task-Switching On Proactive Control And Metamemory Regulation, Jessica Hacker Apr 2023

Effects Of Task-Switching On Proactive Control And Metamemory Regulation, Jessica Hacker

LSU Doctoral Dissertations

Past researchers have proposed a relationship between cognitive control and metamemory and several studies have provided the most support for a relationship between task-switching and metamemory regulation. Nevertheless, the evidence has been correlational. To my knowledge, the present study was the first to include an experimental manipulation incorporating a dual-task that required task-switching within a feeling of knowing (FOK) paradigm to directly observe the effects of task-switching on FOK accuracy. Research on cognitive control has demonstrated that engaging in proactive cognitive control typically leads to better performance in cognitive tasks and that young adults are naturally biased to engage in …

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Design And Synthesis Of Plasmonic Nanoparticles For Nir Bioimaging: Investigating The Role Of Absorption And Scattering, Luis Dias Bumba Manuel Apr 2023

Design And Synthesis Of Plasmonic Nanoparticles For Nir Bioimaging: Investigating The Role Of Absorption And Scattering, Luis Dias Bumba Manuel

LSU Doctoral Dissertations

Nanoparticles have made vast advances in the realm of nanomedicine and bioimaging, enabling technologies such as photothermal therapy of malignant tumors and noninvasive monitoring of living tissue. Many of these innovations have only arisen in the last few decades with potential for growth in many avenues. The research shown in this work addresses some of the existing literature's void. Particularly solving synthesis challenges that have existed for more than 20 years in synthesizing Au nanoshells and establishing the potential for molecular-level deep imaging of plants. A novel investigation of the role of light absorption and scattering in bioimaging led to …

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The Regulation Of Autoimmunity Genes In Pancreatic Β-Cells By Nf-Κb, Thomas Malone Martin Apr 2023

The Regulation Of Autoimmunity Genes In Pancreatic Β-Cells By Nf-Κb, Thomas Malone Martin

LSU Doctoral Dissertations

Type 1 diabetes (T1D) is an autoimmune disease where the immune system targets the pancreatic islet beta-cells, which are responsible for insulin production and secretion, leading to a state of insulin insufficiency. Many of the molecular details of disease onset and progression remain poorly understood, including key aspects of cytokine signaling. Therefore, we have examined some of the consequences of inflammatory cytokine signaling as a critical module relevant to T1D. Using interleukin-1 (IL-1) signaling as a well-defined paradigm for inflammation, we investigated key components of this signaling pathway in pancreatic beta-cells. We identified ICAM-1, one of the proteins expressed in …

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Characterizing Marr Homologs That Mediate Bacterial Fitness And Survival, George Chukwuemeka Nwokocha Apr 2023

Characterizing Marr Homologs That Mediate Bacterial Fitness And Survival, George Chukwuemeka Nwokocha

LSU Doctoral Dissertations

Plant disease outbreaks are on the rise, threatening food security in many parts of the globe. To address these enormous challenges, new intervention strategies like bio-controls are being used as an important sustainable alternative to mitigate the negative effects of pathogens and increase the quality and productivity of agricultural crops. MarR family transcriptional regulators have been studied for their involvement in regulating bacterial virulence genes that help colonize plant hosts and therefore could serve as targets for biocontrol. The transcriptional regulator PecS, a member of the MarR family, is encoded by select bacterial pathogens and we show here that PecS …

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Evaluating The Pesticide-Induced Outbreak Of Soybean Looper, Chrysodeixis Includens (Walker) (Lepidoptera: Noctuidae), In Louisiana Soybean, Scott Lee Apr 2023

Evaluating The Pesticide-Induced Outbreak Of Soybean Looper, Chrysodeixis Includens (Walker) (Lepidoptera: Noctuidae), In Louisiana Soybean, Scott Lee

LSU Doctoral Dissertations

Soybean looper, Chrysodeixis includens (Walker), has established itself as the primary lepidopteran defoliator in Midsouth soybean agroecosystems. Pesticide-induced outbreak events associated with this pest have been observed by soybean producers. The insecticides believed to prompt these incidents are routinely used for the control of other co-occuring pests, such as stink bugs. Outbreak conditions present soybean producers with conflicting management decisions for pests. Laboratory, greenhouse, and field experiments were conducted to provide a better understanding of insecticide usage impact on populations of C. includens and the arthropod community. To discern the potential mechanisms behind C. includens outbreak, a baseline for the …

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Chinese Folk Song Meets Western Compositional Technique—A Case Study Of Zhou Long’S The Partita For The Violin And The Piano, Bo Wu Apr 2023

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, …

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Stabilizing Control Schemes For Grid-Connected Hybrid Pv-Energy Storage Systems, Indra Narayana Bhogaraju Apr 2023

Stabilizing Control Schemes For Grid-Connected Hybrid Pv-Energy Storage Systems, Indra Narayana Bhogaraju

LSU Doctoral Dissertations

A nonlinear stabilizing control scheme based on Lyapunov theory is proposed for a grid- connected hybrid photovoltaic (PV)/ battery/supercapacitor (SC) system. The system dynamics is developed in the stationary reference frame, and the state-space model of the system is derived and used to formulate the Lyapunov function (LF) candidate. The global asymptotic stability of the LF-based controller is discussed in detail. The real-time implementation feasibility of the proposed control scheme is validated through hardware-in-the-loop (HIL) studies of a grid- connected hybrid system under solar energy generation and grid load variations. To address the issue of digital computational time that leads …

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The Abolitionist Spectator: Resistant Readings Of Punishment, Rehabilitation, And Reform At The Louisiana State Penitentiary, Kathryn Marie Morris Apr 2023

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 …

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20-Year Assessment Of Total Suspended Sediment (Tss) Variability In Barataria Bay From Modis Ocean Color Using A Combination Of Adaptive Semi-Analytical And Neural Network Algorithms, Bijaylaxmi Sahoo Apr 2023

20-Year Assessment Of Total Suspended Sediment (Tss) Variability In Barataria Bay From Modis Ocean Color Using A Combination Of Adaptive Semi-Analytical And Neural Network Algorithms, Bijaylaxmi Sahoo

LSU Master's Theses

Barataria Bay, a hydrologically dynamic basin in the northern Gulf of Mexico, exhibits a distinct spatio-temporal distribution of total suspended sediment (TSS). However, studies on sediment distribution are limited by availability of in-situ data as well as the limitation of ocean color algorithms for suspended sediments in shallow optically complex waters. Barataria Bay TSS concentration profile is complex, influenced in the upper basin by fresh water sources such as the Davis Pond Freshwater Diversion, and in the lower bay by the river plume and marine influence near the mouth of the bay. To efficiently study the sediment dynamics in the …

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The Influence Of Native Language And Sentence Form On Memory Of Motion Events, Stephanie L. Lopez Apr 2023

The Influence Of Native Language And Sentence Form On Memory Of Motion Events, Stephanie L. Lopez

LSU Master's Theses

This study utilized four experiments to investigate the extent to which native language influences memory in accordance with linguistic relativity. In Experiment 1, monolingual English speakers and Spanish/English bilinguals were divided into a verbal encoding condition and a verbal suppression encoding condition and watched motion events of low or high physical salience. Participants engaged in a recognition memory task followed by an event memory similarity judgment task. In Experiment 2, native monolingual English speakers were divided into an English-like (or manner-on-verb) description group, a Spanish-like (or path-on-verb) description group, mimicking the language groups of Experiment 1 respectively, and a verbal …

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Evaluating Fungal Population Response To The Miocene Climatic Optimum: High-Resolution Palynological Insights From The South China Sea And Mcmurdo Sound, Antarctica, Mallory Pilie Apr 2023

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 …

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Identifying Key Language Research Priorities In Autistic Children According To Parents, Taylor Hale Apr 2023

Identifying Key Language Research Priorities In Autistic Children According To Parents, Taylor Hale

LSU Master's Theses

The lack of involvement of the autistic community and its stakeholders in autism research has led to a call to action. At present, autism researchers have limited knowledge about stakeholders’ priorities for research. The current study aimed to bridge the disconnect between the extant autism research and the recent neurodiversity movement by surveying key stakeholders – parents of autistic children – on their perspectives on autism research that focuses on language. Twenty-six parents of autistic children completed an online survey on their views on autism language research with an option to participate in a follow-up interview. Six parents participated in …

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Mapping, Modeling, And Predicting Extreme Flood Events With Cloud Computing, Dan Tian Apr 2023

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 …

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Attentional Focus Effects On Motor Variability, Charlend Kenneth Howard Apr 2023

Attentional Focus Effects On Motor Variability, Charlend Kenneth Howard

LSU Doctoral Dissertations

Subtle changes in task instructions with associated changes of one’s focus of attention (FOA) can have measurable effects on performance and learning of complex motor skills (Wulf, 2013). The beneficial effects of adopting an external focus of attention (EF) have been well-documented in physical environments, and recently have also been demonstrated in virtual reality (VR) environments (Cochran, Aiken, Rhea, & Raisbeck, 2021; Yamada, Kuznetsov, Diekfuss, & Raisbeck, 2021). However, these studies primarily focused on performance outcomes (such as error and accuracy), with relatively less emphasis on movement coordination. Given that most human movements are motor abundant (more degrees of freedom …

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The Possibility Of Relationships With Others, Joshua Severud Apr 2023

The Possibility Of Relationships With Others, Joshua Severud

LSU Master's Theses

Levinas offers a rich philosophical insight into the kind of responsibility and ethics that we must have for the Other. This involves a certain conception of what it means to be hospitable which turns out to be impossible. In order to talk about how this impossible relationship can occur, I use Heidegger’s description of the existential Being-with structure and Derrida’s conception of the event in order to make sense of how this Levinasian relationship can possibly exist in spite of—or thanks to—its impossibility.

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Deposition, Material Characterization, And Mechanical Testing Of Cr Containing Diamond-Like Carbon Films, Nicholas Anderson Apr 2023

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 …

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The What And When Of Psychomotor Retardation: A Multimodal Approach, Ole Edvard Granrud Apr 2023

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 …

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Gulf Sturgeon Mesohabitat Use And Movement In The Lower Pearl River Louisiana-Mississippi, Amanda Popovich Apr 2023

Gulf Sturgeon Mesohabitat Use And Movement In The Lower Pearl River Louisiana-Mississippi, Amanda Popovich

LSU Master's Theses

After spring migrations to natal rivers Gulf Sturgeon Acipenser oxyrinchus desotoi reside in freshwater holding areas prior to fall emigrations to nearby estuaries. Limited published information on the physical habitat characteristics of these holding areas is available, especially for juvenile fish in the western portion of the Gulf Sturgeon’s distribution. To further investigate freshwater occupancy and movement patterns, 32 acoustic receivers were deployed from late April to October of 2021 and 2022 in 1600-m reaches distributed throughout the lower Pearl River, Louisiana-Mississippi, the westernmost river within their distribution. Generalized linear mixed models and multi-state models were used to determine what …

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The Nature And Role Of Phenomenology In Hegel And Heidegger, Gabriel W. Connor Apr 2023

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 …

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Machine-Learning Approaches For Developing An Autograder For High School-Level Cs-For-All Initiatives, Sirazum Munira Tisha Apr 2023

Machine-Learning Approaches For Developing An Autograder For High School-Level Cs-For-All Initiatives, Sirazum Munira Tisha

LSU Doctoral Dissertations

Most existing autograders used for grading programming assignments are based on unit testing, which is tedious to implement for programs with graphical output and does not allow testing for other code aspects, such as programming style or structure. We present a novel autograding approach based on machine learning that can successfully check the quality of coding assignments from a high school-level CS-for-all computational thinking course. For evaluating our autograder, we graded 2,675 samples from five different assignments from the past three years, including open-ended problems from different units of the course curriculum. Our autograder uses features based on lexical analysis …

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Contribution Of The Microbiome On Reproductive Outcomes During Pregnancy, Kalie Beckers Apr 2023

Contribution Of The Microbiome On Reproductive Outcomes During Pregnancy, Kalie Beckers

LSU Doctoral Dissertations

A series of translational comparative studies were performed to investigate the effects of the maternal microbiome on reproductive function and outcomes. With the launch of the human microbiome project in 2007, the next generation sequencing of microbiomes is booming. It is not only in the human medicine field, but also in veterinary species. This study specifically investigates the fecal microbiome in blood pressure high sublime 5 (BPH/5) mouse model that spontaneously develops preeclampsia (PE) and obesity. Additionally, the equine reproductive tract microbiome was explored and compared to microbiome of other host body sites. The BPH/5 mouse is a translational model …

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Sl(2,Z) Representations And 2-Semiregular Modular Categories, Samuel Nathan Wilson Apr 2023

Sl(2,Z) Representations And 2-Semiregular Modular Categories, Samuel Nathan Wilson

LSU Doctoral Dissertations

We address the open question of which representations of the modular group SL(2,Z) can be realized by a modular category. In order to investigate this problem, we introduce the concept of a symmetrizable representation of SL(2,Z) and show that this property is necessary for the representation to be realized. We then prove that all congruence representations of SL(2,Z) are symmetrizable. The proof involves constructing a symmetric basis, which greatly aids in further calculation. We apply this result to the reconstruction of modular category data from representations, as well as to the classification of semiregular categories, which are defined via an …

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News(?)Papers: A Typology Of Fake News, 1880-1920, Olivia G. Romaguera Apr 2023

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 …

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Natural Lights & Natural Rights: The Problem Of The New Classical Natural Law Theory, Charles Neville Cacciatore Apr 2023

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.

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Analog Cosmology And Superfluidity In Atomic Gases And Electronic Materials, Anshuman Bhardwaj Apr 2023

Analog Cosmology And Superfluidity In Atomic Gases And Electronic Materials, Anshuman Bhardwaj

LSU Doctoral Dissertations

We present a study of analog cosmological models in Bose-Einstein condensates (BEC) and in graphene, and superfluidity in a box-shaped traps. We start by examining the dynamics of a Bose-Einstein condensate (BEC) trapped inside an expanding toroid that can realize an analog inflationary universe. The expanding condensate forces phonons to undergo redshift and damping due to quantum pressure, owing to the thinness of the ring. We predict that such expanding BECs can exhibit spontaneous phonon creation from the vacuum state and show how it would manifest in the atom density and density correlations and discuss connections with the inflationary theory. …

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Improving Teacher Intervention Decisions Using The Fraction Error Flowchart, Katherine Pettrey Apr 2023

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 …

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Health Service Utilization And Conduct Problems: The Role Of Callous-Unemotional Traits And Juvenile Justice System Processing, Julianne Speck Apr 2023

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 …

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Phonic Faces As A Method For Improving Decoding For Children With Persistent Decoding Deficits, Chantal H Farag Hanna Apr 2023

Phonic Faces As A Method For Improving Decoding For Children With Persistent Decoding Deficits, Chantal H Farag Hanna

LSU Master's Theses

Background: Decoding is a foundational skill for reading, contributing to both reading fluency and comprehension (Lyon et al., 2003). Visual enhancements of alphabetic letters such as shaping letters to resemble words beginning with that sound (e.g., “f” drawn as a flower) (Handler & Fierson, 2011) and associating photographs of lips producing the sounds (Lindamood & Lindamood, 1998) have been shown to improve decoding skills. This study investigated whether a more direct pictured association using faces with alphabet letters placed in the mouth to cue speech sounds, termed Phonic Faces (Norris,2001), would enable students with persistent decoding impairment to acquire orthographic …

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Show And Tell: Approaches For Effective Figures, Stephen R. Midway, Jennifer R. Brum, Matthew Robertson Apr 2023

Show And Tell: Approaches For Effective Figures, Stephen R. Midway, Jennifer R. Brum, Matthew Robertson

Faculty Publications

No abstract provided.

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Horizontally Transferred Genes As Rna Interference Targets For Aphid And Whitefly Control, Honglin Feng, Wenbo Chen, Sonia Hussain, Sara Shakir, Vered Tzin, Femi Adegbayi, Todd Ugine, Zhangjun Fei, Georg Jander Apr 2023

Horizontally Transferred Genes As Rna Interference Targets For Aphid And Whitefly Control, Honglin Feng, Wenbo Chen, Sonia Hussain, Sara Shakir, Vered Tzin, Femi Adegbayi, Todd Ugine, Zhangjun Fei, Georg Jander

Faculty Publications

RNA interference (RNAi)-based technologies are starting to be commercialized as a new approach for agricultural pest control. Horizontally transferred genes (HTGs), which have been transferred into insect genomes from viruses, bacteria, fungi or plants, are attractive targets for RNAi-mediated pest control. HTGs are often unique to a specific insect family or even genus, making it unlikely that RNAi constructs targeting such genes will have negative effects on ladybugs, lacewings and other beneficial predatory insect species. In this study, we sequenced the genome of a red, tobacco-adapted isolate of Myzus persicae (green peach aphid) and bioinformatically identified 30 HTGs. We then …

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