Digital Commons Network^™

The Price Of Decentralization In Cooperative Coverage Problems With Energy-Constrained Agents, Xiangyu Meng, Christos G. Cassandras, Xinmiao Sun, Kaiyuan Xu

Faculty Publications

A multiagent coverage problem is considered with energy-constrained agents, where a charging station is used to replenish an agent's energy as it becomes depleted while performing the coverage task. The objective of this article is to compare the coverage performance between centralized and decentralized approaches. To this end, a centralized coverage control method is developed to switch agents between an optimal coverage formation and an optimal charging formation. We design a controller for agent trajectories that include dwell times at the optimal coverage locations, and charging times at the charging station to maximize a coverage metric over a finite time …

Comparison Of Microstructure And Tensile Behavior Of Hydroxyapatite-Coated Peek Meshes And Cellulose-Based Fabrics And Mats, Armaghan Naderi, Genevieve Palardy

Faculty Publications

Polymeric biomaterials, such as polyether ether ketone (PEEK) and cellulose, have been explored as scaffolds for bone tissue engineering in the past decade. In this study, microstructure and mechanical behavior of uncoated and hydroxyapatite (HA)-coated polymeric meshes, fabrics, and mats were investigated. Commercially available monofilament PEEK meshes, and cellulose fabrics and mats were selected, then coated with a customized low temperature sol–gel method (≤ 150°C). Adhesive HA coating consisting of HA, β-TCP, and CaO with nanorod structure was derived. After HA coating, porosity of substrates (except filter-paper cellulose mats) decreased by up to 43%, indicating effective coating. Both uncoated and …

Tracer And Observationally Derived Constraints On Diapycnal Diffusivities In An Ocean State Estimate, David S. Trossman, Caitlin B. Whalen, Thomas W. N. Haine, Amy F. Waterhouse, An T. Nguyen, Arash Bigdeli, Matthew Mazloff, Patrick Heimbach

Faculty Publications

No abstract provided.

Nature Versus Humans In Coastal Environmental Change: Assessing The Impacts Of Hurricanes Zeta And Ida In The Context Of Beach Nourishment Projects In The Mississippi River Delta, Qiang Yao, Marcelo Cancela Lisboa Cohen, Kam-Biu Liu, Adriana Vivan De Souza, Erika Rodrigues

Faculty Publications

No abstract provided.

Effects Of Music Therapy On The Impulse Control Of A Student With Autism Spectrum Disorder, Danielle Amelie Bella

LSU Master's Theses

One academic concern of students with autism spectrum disorder is a lack of impulse control. Impulse control involves behaviors such as turn-taking, blurting out, waiting, and reaching for desirable items. To reduce problematic impulse control behavior in a student with autism spectrum disorder, a program of music therapy activities was performed with a second-grade student in a special education classroom. A single-subject reversal design was implemented during morning activities. Results suggest there was a slight reduction in observed impulsive behaviors within the classroom during the implementation of the music therapy activities.

Entities: A Field Of Imaginary Games, Thrasyvoulos Ioannis Kalaitzidis

LSU Master's Theses

With this body of work, I am looking for visual symbols that help communicate unuttered meanings through storytelling and stimulate an affectual response to the viewer. This exploration is presented in two different forms: a surreal sculptural installation and a board game. The installation consists of large-scale sculptures made from light and soft materials (polyurethane foam, plastic waste, paper) that are available to move inside the gallery, while the board game is presented as a set of 3D prints with instructions on how the participants can play it. The materials used in the installation suggest a way to transform waste …

Mrs. Florence Mante's Amazing Grace School, Daniel Keith Davis

LSU Master's Theses

Mrs. Florence Mante’s Amazing Grace School is the story of both Mama Florence and the children that she has dedicated her life to. Mrs. Florence Mante is the Ghanaian cofounder of the Amazing Grace Preparatory School. The West African school is committed to developing African leaders and ending the cycles of poverty in the village of Kodiekrom. My thesis focuses on using interview-driven artwork and collaborative storytelling to depict the unique challenges and triumphs of Mama Florence’s life in Ghana. Digital illustrations, a narration from Mama Florence, and music take the viewer on her deeply compelling journey, raising awareness for …

Genomics And Geographic Diversity Of Bacteriophages Associated With Endosymbionts In The Guts Of Workers And Alates Of Coptotermes Species (Blattodea: Rhinotermitidae), Junyan Chen, Christopher R. Gissendanner, Chinmay V. Tikhe, Hou Feng Li, Qian Sun, Claudia Husseneder

Faculty Publications

Subterranean termites depend nutritionally on their gut microbiota, which includes protozoa as well as taxonomically and functionally diverse bacteria. Our previous metavirome study revealed a high diversity and novel families of bacteriophages in the guts of Coptotermes formosanus workers from New Orleans, Louisiana, United States. Two assembled bacteriophage genomes (Phages TG-crAlp-04 and 06, family Podoviridae) existed in all colonies and showed similarity to a prophage (ProJPt-Bp1) previously sequenced from a bacterial endosymbiont (Candidatus Azobacteroides pseudotrichonymphae, CAP) of protozoa in the gut of a termite species of the genus Prorhinotermes from Taiwan. In this study the genomes of Phage TG-crAlp-04 and …

Producing Bacterial Cellulose From Coffee (Coffea Arabica) Kombucha Fermentation And Assessment Of Its Efficacy To Remove Pathogenic Bacteria From Contaminated Water And A Pollutant Dye From Aqueous Solution, Federico Bueno

LSU Doctoral Dissertations

Bacterial cellulose (BC), composed of cellulosic nanofibrils, is synthesized by a symbiotic culture of bacteria and yeast during the fermentation of coffee kombucha (CK). BC may be used as a purification agent and adsorbent. The overall goal of this project was to synthesize BC from CK fermentation and assess its efficacy in removing pathogenic bacteria from contaminated water and a pollutant dye from aqueous solution. The objectives of this study were to: (1) compare BCs that were produced from different carbohydrate substrates in the fermentation of CK, (2) characterize dried BCs produced using various drying methods, (3) evaluate BC as …

Characterization Of Gas Hydrate Formation And Its Impact On Slope Stability In Offshore Environments, Sulav Dhakal

LSU Doctoral Dissertations

Natural gas hydrates (NGH) are predominantly methane hydrates formed at high pressure and low temperature conditions typically in submarine sediments and permafrost. This dissertation is focused on the submarine methane hydrates formed by upward migration of free and dissolved gas. The methane gas stored within natural hydrates has more energy potential than all the combined oil and gas resources around the world. Numerical simulation of fluid flow, heat transport, and geomechanical stresses is used to characterize and evaluate the saturation, distribution, reservoir quality, and geohazards associated with hydrate-bearing sediments. Coupled thermo-hydro-mechanical (THM) simulation of hydrate formation, dissociation, and slope stability …

A Conductor’S Guide To Joan Szymko’S Shadow And Light: An Alzheimer’S Journey, Paul E. Henderson

LSU Doctoral Dissertations

Joan Szymko (pronounced SHIM-koh) is an American composer-conductor with a prolific output of choral music. With over 100 choral pieces in print, her works are regularly heard at national and international festivals and competitions, including regional and national American Choral Directors Association conferences. She was selected to present at the 2020 World Symposium on Choral music in Auckland, New Zealand, which was unfortunately canceled due to the COVID pandemic. Szymko’s only major choral/orchestral work, Shadow and Light: An Alzheimer’s Journey, has been performed three times: in April 2016 by Eugene Vocal Arts; in September 2019 by the Oregon Repertory Singers; …

First-Generation College Students: Persistence And Adaptability In Post-Secondary Institutions, Charlie Elberta Lewis

LSU Doctoral Dissertations

ABSTRACT In post-secondary education, degree attainment for first-generation college students (FGCS) is essential. The purpose of this explanatory sequential mixed-methods study is to explore the first-generation college student's persistence from their first year to the second year at a private or public post-secondary institution. The second purpose is to investigate whether the GEAR UP Services program impacted FGCS persistence at these institutions. Social capital theory and self-determination theory served as a foundation of the study. These theories are linked to the social interaction and behavior that leads to motivation, commitment, and relationships. Previous research suggests that college persistence correlates with …

Lifecycle Reactive Transport Modeling For Assessing Integrity In Offshore Energy Systems, Temitope Ayokunle Ajayi

LSU Doctoral Dissertations

Subsurface leaks and spills are a matter of significant concern to the oil and gas industry because of their impact on health, safety and environment. It is thus important to study and assess the integrity of our energy systems and the physico-chemical processes that affect them.

To avoid leakage of fluids from wellbores, barrier materials are used for sealing formation fluids and creating a single flow path through the well. These barrier materials are constantly subjected to subsurface fluid fluxes and temperature, pressure and chemical conditions over the extended periods the wells remain underground. This makes it imperative to assess …

The Future Of Name, Image, And Likeness In Advertising, Olivia E. Nuss

LSU Master's Theses

This study explores the unique intersection of the law and the theories of communication related to a student athlete’s ability to receive compensation based off their name, image, and likeness (NIL). The purpose of this study is to understand the future of NIL legislation application as it relates to emerging media and student-athletes’ privacy interests in order to better understand influencer marketing and the impact new legislation will have on student-athlete brand deals. Through a series of semi-structured, in-depth interviews, I explored industry trends in NIL as it relates to brand partnerships and advertising, focusing on key players, methods, and …

A Comparative Content Analysis Of How Print Media Framed The Heroin Epidemic And The Opioid Crisis, Quincy Hodges

LSU Doctoral Dissertations

This dissertation examined how the news media covered the Opioid Crisis of the 21st century compared to how the news media covered the Heroin Epidemic of the 1970s. A content analysis of six U.S. newspapers – the New York Times, the Washington Post, The Columbus Dispatch, The Detroit Free Press, The Atlanta Journal-Constitution, and the New Orleans Times-Picayune indicated that the print news media covered the Heroin Epidemic and the Opioid Crisis drastically different. The news media framed the Opioid Crisis as a public health issue, focusing coverage on rogue doctors and health professionals, and how unethical pharmaceutical companies took …

The Effects Of Paired Kinesthetic Movements And Embedded Pictures On Literacy Skills With Preschoolers, Erica Lozy

LSU Doctoral Dissertations

Reading difficulties during childhood often continue during adulthood and result in adverse effects (e.g., unemployment, poverty). A common method to teach early literacy skills is via multisensory instructional programs, which use combinations of mnemonic devices, such as visual, auditory, tactile, and kinesthetic movements. The current literature on the effects of pairing visual mnemonics and kinesthetic movements with literacy skills, either in isolation or in combination, is sparse. The purpose of Study 1 and Study 2 was to compare the efficacy, generalization, and maintenance of and preference for letter sound interventions with and without mnemonic devices. Study 1 evaluated a traditional …

Responsible Classrooms: Unfinalizability, Responsibility, And Participatory Literacy In Secondary English Language Arts, Emma Jamilah Gist

LSU Doctoral Dissertations

This study examines participatory literacy practice in secondary English language arts classrooms. While literacy achievement in this context is often measured according to a student’s ability to receive and repeat predetermined information within the scope of mandated curricula and standardized tests, this study attends specifically to classroom literacy practice that centers authentic, unanticipated, dialogic student response. Within its consideration of literacy practice, this study applies the Bakhtinian notion of unfinalizability to consider those conditions that allow for learning experiences that are not predetermined but are rather uniquely, unpredictably, and unrepeatably co-constructed by individual students, student groups, and teachers. These unfinalizable …

Mental Health Matters: Mental Health Service Utilization Among African American Emerging Adults, Tamecia Curry

LSU Doctoral Dissertations

Evidence indicates that people of color underutilize mental health services, but little is known empirically about the help-seeking behaviors of African American emerging adults. The present mixed method study utilizes a concurrent design with nested samples for the qualitative and quantitative components to examine willingness to seek help and help-seeking intentions among college students. Data was collected from four location sites including Louisiana State University (n=38), Texas State University (n=15), The University of Southern Mississippi (n=65) and Southern University and A&M College (n=3). Minority and non-minority participants completed the Willingness-To-Seek-Help Questionnaire and …

The Impact Of Second-Year Membership Experiences On Retention Among Panhellenic Sororities, Elizabeth Richardson Newell

LSU Doctoral Dissertations

ABSTRACT

Sorority membership retention is a newly emerging research topic with little to no existing information on what motivates members to remain. There are countless studies concerning college student retention in general, but there have yet to be studies that focus specifically on sorority women and their membership experiences. One major research question drove this study: What factors and/or experiences influence a second year National Panhellenic Conference (NPC) sorority member’s decision to actively participate in their sorority?

Using a theoretical framework developed from the social integration retention model proposed by Braxton, Hirschy, and McClendon in 2011, this study explored what …

'My Name Is Peaches': Black Women's Affect In The Blues Biomyth, Taylor C. Scott

LSU Doctoral Dissertations

For this project, I am interested in the study of nuanced self-representations of Black rage that appear within African American literary traditions, specifically the blues aesthetic, wherein artists narrativize a wide spectrum of intelligent and specific emotion--not just melancholy. Blues narratives in which Black people self-represent are in direct opposition to flattened narratives of certain affective modes such as anger as a useless, backwards, pathologized, and flat feeling that appear within dominant U.S. and global iconographies. What I see in the blues aesthetic is the capacity for a multichromatic approach to studying rage and Black authorship in America. By using …

I'M Going Cycle Every Day, Lauren Nguyen

LSU Master's Theses

Many designers and scientists have been able to integrate design and science in their respective fields to create works that effectively inform their audiences of complicated subjects. Each of these individuals can express their creativity and viewpoint of the subject matter in a way that is interesting, visually appealing, and informative. Using the medium of graphic design, I created printed posters that represent the way I view the processes of the human body that are technical, yet also visually appealing.

My thesis exhibition walks my audience through the biological cycles that maintain the human body on an everyday basis from …

A Relational Study Of Self-Taught And Formally Trained Musicians: Trends Within Memory And Socioeconomic Factors, Matthew N. Jimenez, Emily M. Elliott

LSU Master's Theses

It has been well documented that musicians perform better in memory tasks than non-musicians. The current study utilized self-taught musicians, formally trained musicians, and non-musicians, and focused on short-term memory (STM), musicianship, and SES factors to explore this finding. Do the memory benefits of musical training extend to self-taught musicians? First, we addressed musicianship amongst all groups using the Goldsmith’s Musical Sophistication Index (GMSI), which contained subjective and objective measures. The subjective measure was a survey regarding the role of music in daily life. In the objective measures, participants completed tests of beat and melody perception. To measure STM, participants …

It's Not All Rainbows & Glitter, Jerry B. Lockaby

LSU Master's Theses

The goal of this exhibition is to contextualize the struggles of the LGBTQ+ community by anchoring personal stories with collage and poetry to demonstrate the ongoing difficulties of growing up queer. Mixed media digitized collages have been created and paired with companion typographic treatments of poems and narratives from diverse points of view.

The word queer as a term to describe gay men, lesbians, and other non-conforming sexual identities, has evolved over the past 100 years. This evolution of the word parallels the struggles of LGBTQ+ people to achieve equal rights, marriage equality, protection in housing and employment, and an …

Changes In Heat Metrics Following A Major Hurricane And Implications On Heat Stress, Cade Reesman

LSU Master's Theses

Tropical cyclones modify surface-atmosphere interactions in several ways, including the destruction of patches of tree canopy, increasing the direct and diffuse (shortwave) radiation reaching the surface. This addition of radiation at the surface impacts the sensible, latent, and substrate heat (energy) fluxes, generating heat anomalies along the hurricane’s track, which, among other effects, contributes to the higher post-hurricane surface air temperatures. This study consists of a case study on Hurricane Laura (2020) to examine hurricane defoliation impacts on heat stress metrics. Normalized difference vegetation index (NDVI) data from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) identified the spatial extent of defoliation …

Improved Limit On Tensor Currents In The Weak Interaction From Li 8 Β Decay, M. T. Burkey, G. Savard, A. T. Gallant, N. D. Scielzo, J. A. Clark, T. Y. Hirsh, L. Varriano, G. H. Sargsyan, K. D. Launey, M. Brodeur, D. P. Burdette, E. Heckmaier, K. Joerres, J. W. Klimes, K. Kolos, A. Laminack, K. G. Leach, A. F. Levand, B. Longfellow, B. Maaß, S. T. Marley, G. E. Morgan, P. Mueller, R. Orford, S. W. Padgett, A. Pérez Galván, J. R. Pierce, D. Ray, R. Segel, K. Siegl, K. S. Sharma, B. S. Wang

Faculty Publications

The electroweak interaction in the standard model is described by a pure vector-axial-vector structure, though any Lorentz-invariant component could contribute. In this Letter, we present the most precise measurement of tensor currents in the low-energy regime by examining the β-ν¯ correlation of trapped Li8 ions with the Beta-decay Paul Trap. We find aβν=-0.3325±0.0013stat±0.0019syst at 1σ for the case of coupling to right-handed neutrinos (CT=-CT′), which is consistent with the standard model prediction.

Transitioning From Traditional In-Person Studio-Based Education Of Apparel Design Courses To Online Education During The Covid-19 Pandemic, Divya Desai

LSU Doctoral Dissertations

Due to the COVID-19 pandemic and subsequent lockdowns many post-secondary educational institutions all-around the world, including the USA, were forced to transition their teaching methods from a traditional in-person to an online teaching format starting in the spring of 2020. This research however is focused on the transitioning of university-level studio-based Apparel Design (AD) courses to an online teaching format during the spring and fall 2020 semesters. Teaching AD courses that are studio-based and that particularly require hands-on skills like hand rendering, draping, sewing, or pattern drafting, are challenging to be taught online as they require in person step-by-step guidance …

Grotesque Masculinities In The Works Of Harry Crews, Barry Hannah, And Padgett Powell, Matt Brandon Blasi

LSU Doctoral Dissertations

“Grotesque Masculinities in the Works of Harry Crews, Barry Hannah, and Padgett Powell” explores how these authors use the grotesque to complicate, distort, and criticize hegemonic white Southern masculinity as represented in contemporary American literature. In “Grotesque Masculinities,” I argue that the presence of the grotesque mode in these author’s works offers a unique critical perspective by which to better understand how masculinity is constructed by and for white Southern men in literature, and how alternative configurations of identity are not only possible, but necessary to decenter whiteness and heteronormativity as dominant categories. Using what sociologists refer to as body-reflexive …

Neural Stimulator, Jose A. Parodi Amaya, Edward F. Austin, Jin-Woo Choi

Pennington Biomedical Research Center Patents

Methods and apparatus are disclosed relating to the stimulating of tissue including nerve tissue based on combinations of capacitors and resistors. Application and removal of voltage to an electrical circuit is taught as part of a method of creating voltage waveforms for nerve and other tissue with such waveforms creating neural signals. The electrical apparatus taught may, include a first electrical node grounded through a first resistor; a second electrical node grounded through a second resistor; a first capacitor connected to both the first electrical node and the second electrical node; a second capacitor separating the second electrical node from …

High Performance And Recyclable Thermoset Ink For 3d Or 4d Printing, Ang Li, Guoqiang Li

College of Engineering Patents

A UV-curable and recyclable thermoset shape memory polymer is provided. The polymer includes a vitrimer-based monomer and a photoinitiator. The vitrimer-based monomer includes a first unit rendering a high chain stiffness upon polymerization of the monomer, and a second photopolymerizable unit for photopolymerization of the monomer under a UV irradiation. The polymer has high strength, high stiffness, high recovery stress, high energy storage, reasonable recycling efficiency, and is printable using SLA with high resolution.

Sodium Mediates Developmentally Plastic Responses In Plants And Herbivores, Luis Santiago-Rosario

LSU Doctoral Dissertations

Sodium plays a crucial role in organismal performance, trophic-level interactions, and eco-evolutionary dynamics. For plants, sodium impacts osmoregulation, growth, and water uptake. For animals, sodium is essential influencing osmoregulatory processes, muscle and neural development, and blood regulation. My dissertation aims to disentangle why sodium mismatch affects resource-consumer interactions and its influence on morphological and behavioral plasticity. First, I identified how sodium impacts plant performance and sodium accumulation strategies. I initially focused my research on understanding how increasing substrate sodium affects plant growth and tissue sodium accumulation strategies in controlled settings using a systematic review approach. I found that saltier plants …