Digital Commons Network^™

Low-Cost Hardware-In-The-Loop (Hil) Simulator For Simulation And Analysis Of Embedded Systems With Non-Real-Time Applications, Chanuka S. Elvitigala

LSU Master's Theses

Hardware-In-the-Loop (HIL) simulation is an approach that is used for embedded systems testing which was popular in the early days of embedded systems. This technology was wrapped and was stored away for a long time. One of the main reasons is that the less use of embedded systems in society. Recent developments in embedded systems, data science, and control systems lead to a focus on testing these systems. The earliest method of testing these systems was by doing destructive testing which is a waste of money, resources, and time. The HIL provided a safe and economical way of testing the …

Balancing Act: When Gender And Media Collide In Sports, Kimberly Friedman

LSU Master's Theses

Women’s Gymnastics is one of the most popular events at the Summer Olympic Games and media coverage of the team provides a unique perspective on women’s athletics, as gymnastics is traditionally considered a feminine sport. Utilizing a discourse analysis, this thesis examines the newspaper coverage received by the team in the last 25 years. This thesis explores the narratives regarding gender within the coverage and additionally explores how abuse narratives were discussed in news media throughout theses years. This research shows that how female gymnasts are discussed is growing in type of coverage received, meaning that how female gymnastics is …

Intimate Rhetorics Of Networked Motherhood, Katie Nelson

LSU Doctoral Dissertations

Fundamentally pregnant bodies are understood, similarly to women’s bodies, as necessitating discipline. However, new networked forums have emerged where pregnancy is understood as affirming and having the capacity to challenge a silenced subject position. Using three case studies, the #IHadAMiscarriage Instagram page, the #TakeBackPostpartum Instagram page, and mediatized discourses surrounding Kylie Jenner’s pregnancy, this dissertation writes intimate publicity into these mediatized transgressions of pregnancy and postpartum. I argue discourses about pregnancy and postpartum in these networked spaces constitute intimate publics through the cultivation of shared affected investments and divestments in embodied experiences. These investments in the embodied experiences are crafted …

Applications Of Quantum Optics: From The Quantum Internet To Analogue Gravity, Anthony Brady

LSU Doctoral Dissertations

The aim of this thesis is to highlight applications of quantum optics in two very distinct fields: space-based quantum communication and the Hawking effect in analogue gravity. Regarding the former: We simulate and analyze a constellation of satellites, equipped with entangled photon-pair sources, which provide on-demand entanglement distribution ser- vices to terrestrial receiver stations. Satellite services are especially relevant for long-distance quantum-communication scenarios, as the loss in satellite-based schemes scales more favor- ably with distance than in optical fibers or in atmospheric links, though establishing quantum resources in the space-domain is expensive. We thus develop an optimization technique which balances …

The Age-Dependent Characterization Of The Er-Alpha Positive Breast Cancer Tumor Microenvironment, Katie Marie Hamel

LSU Doctoral Dissertations

In disease states such as cancer, endocrine and paracrine signals from adipose tissue contribute to cancer progression and drug resistance. Young individuals diagnosed with estrogen receptor-alpha positive (ER-a+) breast cancer have an observed increase in resistance to endocrine therapies. This suggests that an alternative estrogen signaling pathway is active within these tumors. Despite this, the effects of stromal age on the endocrine response in breast cancer is not well known. Here, we review and highlight the involvement of the stromal age in both tumorigenesis and physiological wound healing. To identify specific differences between young and aged ER-a+ breast tumors, RNA …

"Will God Forgive Us?": Christianity And The Climate Crisis In Auteur Cinema, Margaret Alice Parson

LSU Doctoral Dissertations

Climate change is an unavoidable and real catastrophic threat to the future of Planet Earth. This dissertation is interested in how contemporary auteur cinema draws on Christian forms to give expression to the ineffability of environmental collapse. In this rhetorical generic criticism, I discuss three recent auteur films: First Reformed (2017, directed by Paul Schrader), Interstellar (2014, directed by Christopher Nolan), and mother! (2017, directed by Darren Aronofsky). In order to best rhetorically analyze these films, I perform a generic criticism which utilizes aspects of psychoanalysis and affect theory as per the work of Gunn. Each film is …

Garden Of Ruins: Military Occupation And State Power In Civil War Louisiana, Johnathan Matthew Ward

LSU Doctoral Dissertations

Using Civil War Louisiana as its focus, I argue that military occupation and expansive state power during the US Civil War served the primary mechanisms by which national states fought the war, stabilized order, and shaped a postwar nation. While many histories of the war separate frontline combat from the domestic home front and distinguish between the policy decisions of high politics and everyday decisions on the ground, this dissertation connects the political decisions of war to the daily acts of governance and resistance in occupied Louisiana. Union occupation officials and Confederate state authorities made contingent decisions throughout the war …

Meritocracy And Marketization Of Education: Taiwanese Middle-Class Strategies In A Private Secondary School, Amanda Shufang Yang

LSU Doctoral Dissertations

In the 20th century, economic growth in Taiwan has brought social prosperity and fundamentally altered Taiwanese social structure. While successive generations of young people have climbed the social ladder and experienced upward mobility, being successful is still narrowly defined through academic achievement. This study argues that, despite constant education reform, a solution to class inequality in education has yet to be found. The mandate of the 12-Year Basic Education Curriculum in 2019 was an answer to local, global, and international transformations. While citizens celebrate the neoliberal concepts of autonomy and deregulation embedded in the 12-Year Basic Education Curriculum, coercion is …

Free-Floating Invasive Fern Affects Freshwater Marsh Ecosystem Structure: Changes To Water Quality And Chemistry, Aquatic Vegetation, Fish, And Invertebrates, Charles Wahl

LSU Doctoral Dissertations

Aquatic invertebrates are important to the function freshwater marshes. They are vital to the transfer of energy from primary producers and organic matter to higher trophic levels. The structure of macroinvertebrate communities is directly associated with aquatic macrophyte diversity and abundance. Submerged macrophytes produce oxygen, are a food source, and provide physical habitat, which allows numerous aquatic organisms to exist. Introduction of the invasive free-floating aquatic fern giant salvinia, Salvinia molesta Mitchell, poses a risk to freshwater ecosystems through limited light penetration, decreased submerged macrophyte abundance, altered water quality and, changes in macroinvertebrate community structure and energy transfer. The objective …

The Dna Cloud: Is It Alive?, Theodoros Bargiotas

LSU Doctoral Dissertations

In this analysis, I will firstly be presenting the current knowledge concerning the materiality of the internet based Cloud, which I will henceforth be referring to as simply the Cloud. For organisation purposes I have created two umbrella categories under which I place the ongoing research in the field. Scholars have been addressing the issue of Cloud materiality through broadly two prisms: sociological materiality and geopolitical materiality. The literature of course deals with the intricacies of the Cloud based on its present ferromagnetic storage functionality. However, developments in synthetic biology have caused private tech companies and University spin-offs to flirt …

Channel Estimation In Multi-User Massive Mimo Systems By Expectation Propagation Based Algorithms, Mohammed Rashid

LSU Doctoral Dissertations

Massive multiple input multiple output (MIMO) technology uses large antenna arrays with tens or hundreds of antennas at the base station (BS) to achieve high spectral efficiency, high diversity, and high capacity. These benefits, however, rely on obtaining accurate channel state information (CSI) at the receiver for both uplink and downlink channels. Traditionally, pilot sequences are transmitted and used at the receiver to estimate the CSI. Since the length of the pilot sequences scale with the number of transmit antennas, for massive MIMO systems downlink channel estimation requires long pilot sequences resulting in reduced spectral efficiency and the so-called pilot …

Do Black Girls Receive Later Developmental Disability Diagnoses?: Results From A National Study Of Children In The United States, Danequa Forrest

LSU Doctoral Dissertations

Abstract

This study sought to analyze if age at diagnosis of autism spectrum disorder, intellectual disability, and developmental delay varies by race and sex for children between ages 6 and 17 years old. I used data from the 2011 Survey of Pathways to Diagnosis and Services (“Pathways”), a follow-up survey to the 2009/10 National Survey of Children with Special Health Care Needs (NS-CSHCN). With this nationally representative dataset, I was able to perform ordinary least squares linear regression in Stata 13. Results determined that Black girls were diagnosed with autism spectrum disorder about two years later than White girls, nearly …

Exploring Attentional Biases, Dispositional Mindfulness, And The Suicide Stroop, Emma H. Moscardini

LSU Master's Theses

Extant research has found that attentional biases to suicide-related stimuli are relevant to suicidal thoughts and behaviors (STBs). As such, attentional biases are a core feature of both the Fluid Vulnerability Theory of Suicide and the cognitive model of suicide. Individuals with an STB history have demonstrated attentional biases to suicide-related stimuli on a suicide Stroop task, and this attentional bias has been found to aid in prediction of suicide attempts at six-month follow-up. Better understanding this attentional bias may be useful for informing mindfulness-based interventions which target attentional biases, as dispositional mindfulness has been found to be related to …

Balancing Act: When Gender And Media Collide In Sports, Kimberly Friedman

LSU Master's Theses

Women’s Gymnastics is one of the most popular events at the Summer Olympic Games and media coverage of the team provides a unique perspective on women’s athletics, as gymnastics is traditionally considered a feminine sport. Utilizing a discourse analysis, this thesis examines the newspaper coverage received by the team in the last 25 years. This thesis explores the narratives regarding gender within the coverage and additionally explores how abuse narratives were discussed in news media throughout theses years. This research shows that how female gymnasts are discussed is growing in type of coverage received, meaning that how female gymnastics is …

New Representations For A Semi-Markov Chain And Related Filters, Robert J. Elliott, W. P. Malcolm

Journal of Stochastic Analysis

No abstract provided.

Campus Protests And Competing Marketplaces: A Legal Examination Of Operative Tension Between The Marketplace Of Ideas And The Neoliberal Marketplace, Gillian Patricia Foss

LSU Doctoral Dissertations

This dissertation analyzes the marketplace of ideas analogy, a longstanding force in First Amendment jurisprudence, as it evolves within the same operational contexts as neoliberal economic policy in higher education. To accomplish this, the study focuses on students, the campus population whose activism patterns are distinctively associated with renewed public debate over free speech in university settings. The study combined legal and qualitative research methods to explore a modern campus environment, rife for student dissent, that exists in unresolved tension between the legal underpinnings of the marketplace of ideas analogy and institutional behaviors increasingly linked to neoliberalism. After all: findings …

Smart Quantum Technologies Using Photons, Narayan Bhusal

LSU Doctoral Dissertations

The technologies utilizing quantum states of light have been in the spotlight for the last two decades. In this regard, quantum metrology, quantum imaging, quantum-optical communication are some of the important applications that exploit fascinating quantum properties like quantum superposition, quantum correlations, and nonclassical photon statistics. However, the state-of-art technologies operating at the single-photon level are not robust enough to truly realize a reliable quantum-photonic technology.

In Chapter 1, I present a historical account of photon-based technologies. Furthermore, I discuss recent efforts and encouraging developments in the field of quantum-photonic technologies, and major challenges for the experimental realization of reliable …

Wild Randomness And The Application Of Hyperbolic Diffusion In Financial Modelling, Will Hicks

Journal of Stochastic Analysis

No abstract provided.

Towards A General Framework For Practical Quantum Network Protocols, Sumeet Khatri

LSU Doctoral Dissertations

The quantum internet is one of the frontiers of quantum information science. It will revolutionize the way we communicate and do other tasks, and it will allow for tasks that are not possible using the current, classical internet. The backbone of a quantum internet is entanglement distributed globally in order to allow for such novel applications to be performed over long distances. Experimental progress is currently being made to realize quantum networks on a small scale, but much theoretical work is still needed in order to understand how best to distribute entanglement and to guide the realization of large-scale quantum …

Study Of Laser Based Additive Manufacturing For Titanium And Copper Alloys, Congyuan Zeng

LSU Doctoral Dissertations

Material processing by laser is increasingly applied in industrial applications for its outstanding characteristics, such as localized heating, high efficiency, and high manufacturing precision. In this study, two kinds of laser material processing strategies were investigated, namely laser surface engineering and laser-powder-bed fusion additive manufacturing, with pure titanium and copper alloys as target materials, respectively.

For laser surface engineering related studies, the work includes the investigation of the dynamic interactions between titanium and pure nitrogen or ambient air under transient laser processing conditions. Thanks to the in-situ synchrotron X-ray diffraction tests, the high-temperature reaction steps between titanium and pure nitrogen/ambient …

Linear Decomposition And Anticipating Integral For Certain Random Variables, Ching-Tang Wu, Ju-Yi Yen

Journal of Stochastic Analysis

No abstract provided.

Preparedness, Planning, And Advances In Operational Response, David G. Westerholm, Cameron H. Ainsworth, Christopher H. Barker, Peter G. Brewer, John W. Farrington, Dubravko Justić, Vassiliki H. Kourafalou, Steven A. Murawski, John G. Shepherd, Helena M. Solo-Gabriele

Faculty Publications

During the last 50 years, the numbers and sizes of oil spills have been significantly reduced through prevention. But spills still occur, and it is critical to prepare for these events through planning and exercises. Operational decisions are designed to expedite cleanup and minimize overall impacts, yet they often involve complex tradeoffs between a multitude of competing interests. It is imperative to apply the best technology and science when events occur. However, while planning and response tactics have evolved over time, determining what may be most at risk is often confounded by sparse background data, modeling limitations, scalability, or research …

Three-Dimensional Analysis Of The Effect Of Human Movement On Indoor Airflow Patterns, Arup Bhattacharya, Jovan Pantelic, Ali Ghahramani, Ehsan S. Mousavi

Faculty Publications

Human activity is known to leave significant effects on indoor airflow patterns. These patterns are carefully designed for many facilities such as cleanrooms, pharmaceutical settings, and healthcare environments, where human-induced wakes contribute to the transport of contaminants. Therefore, the knowledge about these wakes as it relates to indoor air quality is critical. As a result, a series of experiments were conducted in a controlled chamber to study the three-dimensional effects of true human walking on airflow. Experiments were designed to capture the effect of human walking under three different flow conditions, and for two different walking schemes. The results show …

A Reporting Format For Leaf-Level Gas Exchange Data And Metadata, Kim S. Ely, Alistair Rogers, Deborah A. Agarwal, Elizabeth A. Ainsworth, Loren P. Albert, Ashehad Ali, Jeremiah Anderson, Michael J. Aspinwall, Chandra Bellasio, Carl Bernacchi, Steve Bonnage, Thomas N. Buckley, James Bunce, Angela C. Burnett, Florian A. Busch, Amanda Cavanagh, Lucas A. Cernusak, Robert Crystal-Ornelas, Joan Damerow, Kenneth J. Davidson, Martin G. De Kauwe, Michael C. Dietze, Tomas F. Domingues, Mirindi Eric Dusenge, David S. Ellsworth, John R. Evans, Paul P.G. Gauthier, Bruno O. Gimenez, Elizabeth P. Gordon, Christopher M. Gough, Aud H. Halbritter, David T. Hanson, Mary Heskel, J. Aaron Hogan, Jason R. Hupp, Kolby Jardine, Jens Kattge, Trevor Keenan, Johannes Kromdijk, Dushan P. Kumarathunge, Julien Lamour, Andrew D.B. Leakey, David S. Lebauer, Qianyu Li, Marjorie R. Lundgren, Nate Mcdowell, Katherine Meacham-Hensold, Belinda E. Medlyn, David J.P. Moore, Robinson Negrón-Juárez, Ülo Niinemets, Colin P. Osborne, Alexandria L. Pivovaroff, Hendrik Poorter, Sasha C. Reed, Youngryel Ryu, Alvaro Sanz-Saez, Stephanie C. Schmiege, Shawn P. Serbin, Thomas D. Sharkey, Martijn Slot, Nicholas G. Smith, Balasaheb V. Sonawane, Paul F. South, Daisy C. Souza, Joseph Ronald Stinziano, Ellen Stuart-Haëntjens, Samuel H. Taylor, Mauricio D. Tejera, Johan Uddling, Vigdis Vandvik, Charuleka Varadharajan, Anthony P. Walker, Berkley J. Walker, Jeffrey M. Warren, Danielle A. Way, Brett T. Wolfe, Jin Wu, Stan D. Wullschleger, Chonggang Xu, Zhengbing Yan, Dedi Yang

Faculty Publications

© 2021 The Authors Leaf-level gas exchange data support the mechanistic understanding of plant fluxes of carbon and water. These fluxes inform our understanding of ecosystem function, are an important constraint on parameterization of terrestrial biosphere models, are necessary to understand the response of plants to global environmental change, and are integral to efforts to improve crop production. Collection of these data using gas analyzers can be both technically challenging and time consuming, and individual studies generally focus on a small range of species, restricted time periods, or limited geographic regions. The high value of these data is exemplified by …

Choosing Isds As A Major: Predictive Analysis, Sarah Johnson

Honors Capstones

No abstract provided.

A Facility For The Research, Development, And Translation Of Advanced Technologies For Ion-Beam Therapies, M. Lis, W. Newhauser, M. Donetti, M. Durante, U. Weber, B. Zipfel, C. Hartmann-Sauter, M. Wolf, C. Graeff

Faculty Publications

This article describes the updated GSI radiotherapy research facility (Cave M) located at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, Germany. This facility was upgraded by modernizing the beamline that supported a pilot project in carbon ion cancer therapy in Europe from 1997 to 2008. Descriptions are provided of the modernized beamline, related hardware components and treatment delivery system. The performance specifications and general characteristics for each major component are described, along with example pre-clinical test results of selected components. These upgrades to Cave M allow for investigating novel therapy methods. The radiotherapy research facility is located …

Spatial Mode Correction Of Single Photons Using Machine Learning, Narayan Bhusal, Sanjaya Lohani, Chenglong You, Mingyuan Hong, Joshua Fabre, Pengcheng Zhao, Erin M. Knutson, Ryan T. Glasser, Omar S. Magaña-Loaiza

Faculty Publications

Spatial modes of light constitute valuable resources for a variety of quantum technologies ranging from quantum communication and quantum imaging to remote sensing. Nevertheless, their vulnerabilities to phase distortions, induced by random media, impose significant limitations on the realistic implementation of numerous quantum-photonic technologies. Unfortunately, this problem is exacerbated at the single-photon level. Over the last two decades, this challenging problem has been tackled through conventional schemes that utilize optical nonlinearities, quantum correlations, and adaptive optics. In this article, the self-learning and self-evolving features of artificial neural networks are exploited to correct the complex spatial profile of distorted Laguerre–Gaussian modes …

Effect Of Rice Planting Date And Optimal Planting Window For Southwest Louisiana, Tommaso Cerioli, Thanos Gentimis, Steven D. Linscombe, Adam N. Famoso

Faculty Publications

Rice (Oryza sativa L.) yield and grain quality are highly influenced by the planting date; thus, it is crucial to determine the optimal planting window for an area of cultivation. In this study, date of planting experiments conducted at the Louisiana State University (LSU) AgCenter Rice Research Station from 2011 to 2018 were analyzed to quantify the effect of planting date, genotype, and year on key agronomic traits. Planting date was strongly associated with yield across every year, explaining 55.6% of the overall phenotypic variation. A clear relationship was observed between later plantings and reduced yields; and the highest yields …

The Effects Of Mechanical Rocking Motion On Transdifferentiating Feline Adipose Multipotent Stromal Cells Into Functioning Pancreatic Β-Cell Like Islets, Emily Halphen

Honors Capstones

No abstract provided.

Knock Knock, Who’S There? Communications In Closed Environments With A Special Focus On Vietnam Pows, Carrie Cole

Honors Capstones

No abstract provided.