Digital Commons Network^™

Beyond An Accommodation: A Mixed Methods Study Of Diversity Engagement In Academic Curriculum, Micah Jaryl Glenn

LSU Doctoral Dissertations

Currently, 45% of all college students are classified as racial/ethnic minorities, while 56% of college students are female (NCES, 2018a). By 2030, nearly half of the estimated United States population will be composed of racial/ethnic minorities (Cortes, 1991). With this exponential growth of minorities attending institutions of higher education, there is the assumption that students have begun to engage in and promote diversity and inclusion. However, in 2008, Boysen and Vogel (2009) found that 40% of teachers and 50% of students encountered implicit or explicit bias while in college. In 2017, within four months, over 330 reported biased incidents occurred …

Feasibility Of Generating Synthetic Ct From T1-Weighted Mri Using A Linear Mixed-Effects Regression Model, Anant Pandey, S. A. Yoganathan, Beibei Guo, Rui Zhang

Faculty Publications

Generation of synthetic computed tomography (sCT) for magnetic resonance imaging (MRI)-only radiotherapy is emerging as a promising direction because it can eliminate the registration error and simplify clinical workflow. The goal of this study was to generate accurate sCT from standard T1-weighted MRI for brain patients. CT and MRI data of twelve patients with brain tumors were retrospectively collected. Linear mixed-effects regression models were fitted between CT and T1-weighted MRI intensities for different segments in the brain. The whole brain sCTs were generated by combining predicted segments together. Mean absolute error (MAE) between real CTs and sCTs across all patients …

The Role Of Atp-Sensitive Inward Rectifier Potassium Channels In The Regulation Of Reactive Oxygen Species In The Western Honey Bee, Apis Mellifera L., Christopher J. Fellows

LSU Master's Theses

Colonies of managed honey bees are annually being lost at an unsustainable rate, partly due to reduced immunocompetence that leads to acute viral outbreaks and mortality. To aid in restoring honey bee health despite the myriad of environmental stressors, this thesis focuses on identifying novel physiological pathways that can mitigate virus-mediated mortality through increased immune function. Previous work has demonstrated that a family of potassium ion channels, termed K_ATP channels, mediate the survival of honey bees during infection from a model virus, suggesting K_ATP channels may drive antiviral immunity. Interestingly, these channels have been linked to the regulation …

The Application Of Nonverbal Prosody In Scratches, An Original Composition For Trumpet And Chamber Ensemble, Shane Courville

LSU Doctoral Dissertations

This project uses research in prosody (the patterns of stress and intonation in language) to inform the compositional process of an original piece of music for trumpet, piano, string quartet, and sign language entitled Scratches. In this this paper, I propose that both verbal and nonverbal prosody affects music across all cultures at both the subtle and overt levels consciousness. It shows up in chanting and rhythmic structures of folk music as well as composers who use the influence of language explicitly. In conjunction with this document, I will discuss and perform the piece I compose through the inspiration of …

Fluorescence Hplc Analysis Of The In-Vivo Activity Of Glucosylceramide Synthase, Kartik R. Roy, Sachin K. Khiste, Zhijun Liu, Yong Yu Liu

Faculty Publications

Almost all functions of cells or organs rely on the activities of cellular enzymes. Indeed, the in-vivo activities that directly represent the cellular effects of enzymes in live organs are critical importance to appreciate the roles enzymes play in modulating physiological or pathological processes, although assessments of such in-vivo enzyme activity are more difficult than typical test-tube assays. Recently, we, for the first time, developed a direct and easy-handling method for HPLC analyzing the in-vivo activity of glucosylceramide synthase (GCS). GCS that converts ceramide into glucosylceramide is a limiting-enzyme in the syntheses of glycosphingolipids and is one cause of cancer …

Cogongrass (Imperata Cylindrica (L.) Beauv.) In Louisiana: Cause And Consequence, Lorissa A. Radunzel-Davis

LSU Master's Theses

Cogongrass (Imperata cylindrica (L.) Beauv.), an invasive species from East Asia, is found worldwide and is problematic in several countries. In the United States, it grows primarily in the Southeast, reducing biodiversity by growing in dense patches and potentially causing mortality and reducing value of native and planted pinelands due to a high burning temperature. Using Lee Memorial Forest, a Louisiana State University AgCenter property in Washington Parish as a study site, this thesis explores cogongrass in Louisiana with emphasis on soil microbes and soil legacy effects on native plant species. Cogongrass populations at Lee Memorial Forest were more …

Chronic Nucleoside Reverse Transcriptase Inhibitors Disrupt Mitochondrial Homeostasis And Promote Premature Endothelial Senescence, Yi-Fan Chen

LSU Doctoral Dissertations

Combination antiretroviral therapy (cART) has been hugely successful in reducing the mortality associated with human immunodeficiency virus (HIV) infection, resulting in a growing population of people living with HIV (PLWH). Since PLWH now have a longer life expectancy, chronic comorbidities have become the focus of the clinical management of HIV. For example, cardiovascular complications are now one of the most prevalent causes of death in PLWH. Nucleoside reverse transcriptase inhibitors (NRTIs) are the backbone of cART, and two NRTIs are typically used in combination with one drug from another drug class, such as a non-NRTI, a protease inhibitor or an …

Intimate Fictions: The Rhetorical Strategies Of Obscene Violence In Four Novels, Steven Monk

LSU Doctoral Dissertations

Richard Wright, Marlon James, Cormac McCarthy and Ken Levine are each celebrated in their respective fields but notorious for their obscene depictions of violence. Contrary to trauma theorists’ claims that violence shatters language and cannot be spoken, these writers speak violence in its most disturbing forms: torn eyeballs, dead infants, forced fecal consumption and mechanized rape. I argue that obscene violence, much like obscene language, creates a space of intimacy in which transgressive, subversive and oppositional thoughts may be spoken. By alienating their texts from the larger reading public, these writers entice a smaller group of sympathetic readers to develop …

Spatiotemporal Impact Of Snow On Underwater Photosynthetically Active Radiation In Taylor Valley, East Antarctica, Madeline E. Myers

LSU Master's Theses

The role of snow on underwater photosynthetically active radiation (UW PAR) in the McMurdo Dry Valleys (MDVs) has been understudied due to lack of a detailed snowfall record. Research has shown that a relationship between snow cover and UW PAR exists, but the extent has never been evaluated in great detail. Although annual snowfall values in the MDVs are low (3 to 50 mm water equivalent annually), trends of increasing snowfall on the continent under future warming conditions could lead to an increased role for snow in regulating UW PAR (and associated primary productivity). Here, I discuss evidence from the …

Dehn Functions Of Bestvina-Brady Groups, Yu-Chan Chang

LSU Doctoral Dissertations

In this dissertation, we prove that if the flag complex on a finite simplicial graph is a 2-dimensional triangulated disk, then the Dehn function of the associated Bestvina--Brady group depends on the maximal dimension of the simplices in the interior of the flag complex. We also give some examples where the flag complex on a finite simplicial graph is not 2-dimensional, and we establish a lower bound for the Dehn function of the associated Bestvina--Brady group.

Neurostimulator With Waveforms Inspired By Nature For Wearable Electro-Acupuncture, Jose Aquiles Parodi Amaya

LSU Doctoral Dissertations

The work presented here has 3 goals: establish the need for novel neurostimulation waveform solutions through a literature review, develop a neurostimulation pulse generator, and verify the operation of the device for neurostimulation applications.

The literature review discusses the importance of stimulation waveforms on the outcomes of neurostimulation, and proposes new directions for neurostimulation research that would help in improving the reproducibility and comparability between studies.

The pulse generator circuit is then described that generates signals inspired by the shape of excitatory or inhibitory post-synaptic potentials (EPSP, IPSP). The circuit analytical equations are presented, and the effects of the circuit …

Capturing Contingency: Experimental Documentary In The Wake Of Direct Cinema, Dustin Reed Zemel

LSU Doctoral Dissertations

This dissertation examines experimental works in the late 1960s utilizing technologies and techniques connected with direct cinema and cinema vérité models of documentary filming. Focusing on three experimental filmmakers, I show how films by Jonas Mekas, Robert Fulton and William Greaves eschew the austere style associated with observational realism of direct cinema in favor of more ostentatious experimental assembly practices which highlight the role of the filmmaker as artist. I argue for a relational model of assessment in which documentary film’s qualitative renderings of environment become important determinants of documentary integrity and efficacy. With separate chapters focusing on works by …

Examining Values Of E-Luxury Among Young Consumers, Nancy Haddad

LSU Master's Theses

Over the past few years, changes in technology, especially the increased use of online shopping, has impacted fashion retailers. Many brands, such as luxury brands, have recognized the online shopping potential and have engaged in setting up their websites in ways that are geared towards meeting luxury consumers’ online shopping needs. Previous research has examined consumers’ luxury consumptions, but there is no known study that has examined young consumers online luxury consumption and which value perceptions can impact shopping intentions. Therefore, the purpose of the current study is to shed some light on understanding young consumers’ online luxury consumption. Specifically, …

Graph Information Processing For Artificial Intelligence, Limeng Pu

LSU Doctoral Dissertations

In the last decade, techniques for artificial intelligence (AI) has advanced tremendously, which lead to solutions to many problems that have long-troubled us. Such examples include image/video recognition, speech recognition, and 3D scenario recognition. As the tool become more and more powerful, we started to explore data types that have never been handled in an AI fashion. Graph is undoubtedly the first one that comes to mind. Many important real-life data is or can be represented as graphs or networks: social networks, communication networks, protein-protein interaction networks, molecular structures, etc. Yet very little attention has been devoted to the study …

Secure And Efficient Bft Consensus For Blockchains, Mohammad Mussadiq Jalalzai

LSU Doctoral Dissertations

Blockchains are simple data structures, containing transactions organized into blocks, in which each block points to a previous block using its hash. Thus, by following the chain, we can follow the history of transactions. Blocks are added to the chain through a consensus mechanism. Byzantine Fault Tolerant (BFT) consensus protocols that were designed before blockchains were introduced are usually considered appropriate for use in small scale networks of size 10-20 replicas. Blockchains have changed this trend as the blockchain networks usually require a larger number of replicas and classic BFT protocols cannot provide acceptable performance in large networks. One of …

Examining Two Self-Assessment Measures Of Teacher Multicultural Competence And Their Predictive Value To Student Behavior Outcomes, Melissa Jo Hamilton Grisdale

LSU Doctoral Dissertations

Multicultural competence is a construct that has been discussed in the education literature as an essential skill for teachers' success in reaching all children in the classroom. The current study advances the literature on multicultural competence, specifically pertaining to teachers within their classrooms. Additional evidence was found building upon the technical adequacy of two, theoretically different, measures of teacher multicultural competence. Teachers who received a greater number of hours of multicultural training had significantly higher self-efficacy regarding engaging in culturally responsive teaching practices, than those who had received fewer hours. This study also replicated previous research (Hamilton, 2016) finding that …

Mapping Soil Moisture From Remotely Sensed And In-Situ Data With Statistical Methods, Yaping Xu

LSU Doctoral Dissertations

Soil moisture is an important factor for accurate prediction of agricultural productivity and rainfall runoff with hydrological models. Remote sensing satellites such as Soil Moisture Active Passive (SMAP) offer synoptic views of soil moisture distribution at a regional-to-global scale. To use the soil moisture product from these satellites, however, requires a downscaling of the data from an usually large instantaneous field of view (i.e. 36 km) to the watershed analysis scales ranging from 30 m to 1 km. In addition, validation of the soil moisture products using the ground station observations without an upscaling treatment would lead to cross-level fallacy. …

Assessing Louisiana State University College Of Agriculture Faculty Members' Cultural Intelligence And Kenyan Workshop Participants' Knowledge And Attitude Towards International Development Projects, Cristina Cossich

LSU Doctoral Dissertations

The main objective of this dissertation was to assess Louisiana State University College of Agriculture Faculty Members' Cultural Intelligence and Kenyan Workshop Participants' Knowledge and Attitude towards International Development Projects. The study examines key aspects that contribute to the implementation of international development projects: describing the landscape of what is known about international development projects in Kenya; assessing perceptions of faculty members of a southern United States land-grant university who are in charge of the development and implementation of international development projects; and evaluation of program impacts on selected local participants of a project in Kenya.

The overall findings of …

Examining Successful Aging And Resilience After Disasters, Katie Elizabeth Stanko

LSU Doctoral Dissertations

Resilience, a psychological adaptive process and outcome, is the ability to return to normal functioning after a traumatic event, such as a natural disaster. Successful aging entails biological, psychological, and social factors. The Great Flood of 2016 in the greater Baton Rouge area caused catastrophic structural damage to thousands of homes and businesses. Some of these individuals had previously moved to the Baton Rouge area after receiving catastrophic damage during Hurricane Katrina in 2005. In this study, I investigated the role that age group (younger, middle-aged, older) and disaster exposure group (control, single exposure, double exposure) had on post-disaster well-being. …

Cruzando Para El Otro Lado: Motivation, Communication, And The Migrant Experience, Crystal Paul

LSU Doctoral Dissertations

Latino/a migration scholarship has largely focused on the motivations to migrate and the assimilation of men migrants. When gender is considered in migration research, it is often treated as a demographic characteristic used to track differences in trends between men and women migrants rather than as a structuring entity informing the migration experience. Recent feminist scholars have shifted focus, employing gender as a theoretical tool to understand how gender shapes the migrant experience before, during and after migration. My research draws upon this theoretical approach and uses data collected via in-depth interviews in an attempt to understand how gender shapes …

High-Performance Computing Frameworks For Large-Scale Genome Assembly, Sayan Goswami

LSU Doctoral Dissertations

Genome sequencing technology has witnessed tremendous progress in terms of throughput and cost per base pair, resulting in an explosion in the size of data. Typical de Bruijn graph-based assembly tools demand a lot of processing power and memory and cannot assemble big datasets unless running on a scaled-up server with terabytes of RAMs or scaled-out cluster with several dozens of nodes. In the first part of this work, we present a distributed next-generation sequence (NGS) assembler called Lazer, that achieves both scalability and memory efficiency by using partitioned de Bruijn graphs. By enhancing the memory-to-disk swapping and reducing the …

Application Of Pressure And Rate Transient Analyses To Stress-Sensitive Multi-Fractured Composite Systems And Compartmentalized Reservoirs, Oscar Mauricio Molina

LSU Doctoral Dissertations

Pressure transient analysis (PTA) is one of the most robust and commonly interpretation tools available for reservoir characterization. Common applications of PTA include estimation of near-wellbore and reservoir properties, detection of reservoir limits and identification of depletion mechanisms. In addition, PTA allows the identification of sealing and leaky faults and the characterization of its properties, such as permeability and transmissibility hence direction of leakage within the fault.

The purpose of this dissertation is to introduce the analytical solution for pressure-transient behavior for three novel reservoir models. First, we develop the analytical model of a multi-fracture horizontal well (MFHW) with pressure-dependent …

Factors Influencing Safety Performance Among Industrial Manufacturing Facilities In Louisiana, Sarah Emily Ragona

LSU Doctoral Dissertations

The primary purpose of this study was to determine the influence of selected organizational, demographic, and safety practice factors on the number and types of injuries within the industrial manufacturing plants in eight parishes in southern Louisiana. The target population was industrial organizational facilities. The accessible population was industrial manufacturing plants in the eight parishes surrounding Baton Rouge, Louisiana, who are members of a trade association comprised of industrial manufacturers. The sample was 100% of the defined as the accessible population. The researcher contacted a trade organization to identify the data source, requested and was granted permission to both access …

Teachers As Change Agents: An Investigation Into The Literary Practices Of Effective Tier 2 Charter School Teachers In South Louisiana, Earlisha Jenkins Whitfield

LSU Doctoral Dissertations

A Southern Louisiana charter school is in the initial phases of a Response To Intervention (RTI). General education classroom teachers are responsible for all Tier 1 and 2 instruction that included interventions in Tier 2. However, many teachers were unsure about the implementation, of RTI and had negative experiences with RTI, describing the process as frustrating and overwhelming. This case study examines teachers that have been effective in the process as evidenced by an increase in in reading levels and student interest. The research explores the teachers’ perceptions, experience, and knowledge of the current implementation of RTI. This qualitative research …

#Whyididntreport: Using Social Media Analysis To Inform Issues With Sexual Assault Reporting, Jordyn Warren

LSU Master's Theses

The #MeToo movement allowed victims of sexual assault to go public with their stories. When Dr. Christine Blasey Ford came forward with allegations against Supreme Court nominee Brett Kavanaugh in September of 2018, she was scrutinized by President Trump for not reporting the incident to authorities “when it happened nearly 30 years ago.” Promptly, #WhyIDidntReport came to fruition on Twitter, uncovering the shame victims feel and the complexities behind why so many individuals didn’t and still don’t report their assaults. Victim-service agencies “provide victims with support and services to facilitate their physical and emotional recovery, offer protection from future victimizations, …

A Decision-Making Tool For Incorporating Cradle-To-Gate Sustainability Into Pavement Design, Sujata Subedi

LSU Master's Theses

The need to continually maintain an aged and crumbling national roadway network, together with a growing demand for upgrading has resulted in major environmental and economic impacts around the nation. This has led to an interest in developing a structured framework to quantify the sustainability performance of pavements by balancing economic and environmental performance against engineering criteria. This study developed an Environment Product Declaration (EPD) based, decision-making framework to quantify the sustainability of pavement design alternatives. In this study, the sustainability of pavement is described in tandem with Environmental and Economic performance criteria. First, the Environmental analysis was inclusive of …

Painterly Reality, Chao Ding

LSU Master's Theses

During my three years in the LSU M.F.A. painting program, I experimented with many different directions, but I have always returned to painterly figuration as the means best suited to the expression of my thoughts and feelings. Symbolism of alienation and isolation have always been extremely important to me, but as my painting has evolved formal issues of composition and color have become increasingly important, allowing me to address more complex metaphorical structures.

A Low-Cost Experimental Testbed For Multi-Agent System Coordination Control, Victor Fernandez-Kim

LSU Master's Theses

A multi-agent system can be defined as a coordinated network of mobile, physical agents that execute complex tasks beyond their individual capabilities. Observations of biological multi-agent systems in nature reveal that these ``super-organisms” accomplish large scale tasks by leveraging the inherent advantages of a coordinated group. With this in mind, such systems have the potential to positively impact a wide variety of engineering applications (e.g. surveillance, self-driving cars, and mobile sensor networks). The current state of research in the area of multi-agent systems is quickly evolving from the theoretical development of coordination control algorithms and their computer simulations to experimental …

Exploring The Role Of Gender And Race In Salary Negotiations, Chelsea D. Hightower

LSU Master's Theses

Research findings from the negotiation literature have revealed significant differences in the negotiation behaviors of men and women, specifically that women do not negotiate as often or as successfully as men do. This difference has been cited as one of many factors contributing to the persistence of the gender wage gap. A possible explanation for the differences is that men and women are treated differently when they negotiate. Thus, there is evidence that women negotiators tend to receive multiple forms of social and economic punishment (i.e., backlash) for engaging in behavior that is inconsistent with stereotype-based expectations of women in …

Phantasmatic: Interrogating The (Im)Materiality Of Bodies Through Wool And Clay, Alexandria J. Arceneaux

LSU Master's Theses

Phantasmaticis an exploration of materials and materiality which relies on the concept of the phantasmatic body elucidated in Gayle Salamon’s work Assuming a Body: Transgender and Rhetorics of Materiality. This thesis is an exploration of these ideas. In my work, I use wool and clay to represent the material (known) and phantasmatic (sensed) bodies in an effort to explore an expanded understanding of the body at large. My work is also an effort to expand my own understanding of my phantasmatic body and its relationship to (my) materiality.