Digital Commons Network^™

A Street-Based Simulation Approach To Evaluating Crime Theories And Deterrence Efficacy In Baton Rouge, Louisiana, Shaun Edward Williams

LSU Doctoral Dissertations

Criminology of place and deterrence strategy evaluations share separate yet similar paths towards incorporating microgeographic units of analysis within deterrence strategies. These transitions have been underway since Weisburd’s 2015 criminology of place work and Kennedy’s 1997 Ceasefire publication for deterrence strategy evaluation. Rather than purely theoretical or practical challenges serving as agents of change, scale appropriateness can arguably be pinpointed as the foundation for change in both areas. Microplace offers improved insight into the study of crime and place dominated by areal designs. This status quo has hampered evaluation but has not slowed the flow of resources to support strategy …

Adaptive Reuse A Brief Introduction + Critique Of Academic Methods, Nicholas Bertucci

Honors Capstones

No abstract provided.

Predicting Coral Metapopulation Decline In A Changing Thermal Environment, Daniel M. Holstein, Tyler B. Smith, Ruben Van Hooidonk, Claire B. Paris

Faculty Publications

No abstract provided.

Interneuronal Network Model Of Theta-Nested Fast Oscillations Predicts Differential Effects Of Heterogeneity, Gap Junctions And Short Term Depression For Hyperpolarizing Versus Shunting Inhibition, Guillem Via, Fernando R. Fernandez, John A. White, Carmen C. Canavier

Faculty Publications

No abstract provided.

Effect Of Steam Conditioning On Pecan Safety And Quality And Utilization Of Pecan Shell Extract As An Antimicrobial Coating To Maintain The Quality And Safety Of Fresh Produce, Karuna Kharel

LSU Doctoral Dissertations

Pre- and post-harvest practices can pose microbial risk on fresh produce thus, appropriate intervention strategies to inactivate foodborne pathogens without compromising quality is important. The first part of this study investigated the effect of steam conditioning on inactivating Enterococcus faecium, a surrogate for Salmonella enterica, on in-shell pecans; and second part determined the in vitro and in vivo antimicrobial efficacy of pullulan coating incorporated with pecan shell extract on produce. The treatments’ effect on quality of pecans and produce during storage were also evaluated. In-shell pecans inoculated with Enterococcus faecium (7.28±0.17logCFU/g) were treated with steam at 70°C, 80°C …

Synthesis, Characterization, And Photo-Reactivity Studies On Mo(Vi) Dioxo Complexes For C-H Activation And O-Atom Transfer, Saeed Fosshat

LSU Doctoral Dissertations

Metal oxos are important intermediates in various chemical transformations that include electron transfer, proton-coupled electron transfer (PCET) and and O-atom transfer. Various extent of π-bonding from the oxo ligands to the central metal causes changes in nucleophilicity and overall reactivity of these species. Several factors can influence the electronic structure of the M=O bonds such as central metal oxidation state, geometry, ancillary ligands and spin state of the metal. A general strategy to increase the reactivity of metal oxos is to use electron rich metal centers that are less oxophilic. As a result of this, extensive amount of research has …

Nutrient Transporter Gene Expression In The Early Conceptus—Implications From Two Mouse Models Of Diabetic Pregnancy, Claudia Kappen, Claudia Kruger, Sydney Jones, J. Michael Salbaum

Division of Basic Science Faculty Publications

Maternal diabetes in early pregnancy increases the risk for birth defects in the offspring, particularly heart, and neural tube defects. While elevated glucose levels are characteristic for diabetic pregnancies, these are also accompanied by hyperlipidemia, indicating altered nutrient availability. We therefore investigated whether changes in the expression of nutrient transporters at the conception site or in the early post-implantation embryo could account for increased birth defect incidence at later developmental stages. Focusing on glucose and fatty acid transporters, we measured their expression by RT-PCR in the spontaneously diabetic non-obese mouse strain NOD, and in pregnant FVB/N mouse strain dams with …

Practical Considerations And Applications For Autonomous Robot Swarms, Rory Alan Hector

LSU Doctoral Dissertations

In recent years, the study of autonomous entities such as unmanned vehicles has begun to revolutionize both military and civilian devices. One important research focus of autonomous entities has been coordination problems for autonomous robot swarms. Traditionally, robot models are used for algorithms that account for the minimum specifications needed to operate the swarm. However, these theoretical models also gloss over important practical details. Some of these details, such as time, have been considered before (as epochs of execution). In this dissertation, we examine these details in the context of several problems and introduce new performance measures to capture practical …

Numerical Modeling Of Bulk Sediment Deposition And Scour In The Lower Mississippie River Physical Model, Ronald Joseph Rodi

LSU Doctoral Dissertations

Land loss restoration along the southeast Louisiana coast relies on the replenishment of sand from the sediment of the Mississippi River. To further the understanding of sediment transport and hydraulic characteristics of the lowermost segment of the river, the Louisiana Coastal Protection and Restoration Authority (CPRA) funded construction of the Lower Mississippi River Physical Model (LMRPM). This distorted-scale, movable bed model encompasses the lowermost 193-mile reach of the river, including from Donaldsonville, Louisiana to the Gulf of Mexico the Bonnet Carre Spillway and planned river sediment diversions.

Designed to replicate the prototypical river hydraulics and bulk bedload (sand) transport, scaled …

Performing Memory Forensics For Object Recovery From Android Application Memory, Sneha Sudhakaran

LSU Doctoral Dissertations

The analysis of application-specific behavior has become an increasingly important technique in cyber forensics and incident response. The ability to determine the precise actions taken by a user can be the difference between a successful analysis and one that fails to meet its goals. The precise actions includes URLs visited, files downloaded, messages sent and received, images viewed, and data accessed. Evidence extraction from application memory at runtime is an effective solution to successfully extract valuable objects allocated by each application, and it is evident that there is a need for more Android forensics analysis tools that support recovering evidence …

A New Perspective On A Polynomial Time Knot Polynomial, Robert John Quarles

LSU Doctoral Dissertations

In this work we consider the Z1(K) polynomial time knot polynomial defined and
described by Dror Bar-Natan and Roland van der Veen in their 2018 paper ”A polynomial time knot polynomial”. We first look at some of the basic properties of Z1(K), and develop an invariant of diagrams Ψm(D) related to this polynomial. We use this invariant as a model to prove how Z1(K) acts under the connected sum operation. We then discuss the effect of mirroring the knot on Z1(K), and described a geometric interpretation of some of the building blocks of the invariant. We then use these to …

Effects Of Engagements And Presentation Order In Informal Science Presentations, William Henry Katzman

LSU Doctoral Dissertations

Science museums conduct presentations for their audiences to attract and educate visitors, yet research on presentations has primarily concentrated on whether individual presentations were effective. This mixed-methods, quasi-experimental study looks at how the presenter’s mental and physical engagements within a presentation affects audience members by altering sociocultural context of the presentation.

Physical engagements involve asking audience members to physically participate, while mental engagements involved asking audience members to make predictions prior to observing a demonstration. Audiences were given presentations containing: 1) Both mental and physical engagements, 2) Physical engagements only, 3) Mental engagements only or 4) No engagements (control).

This …

General Stochastic Calculus And Applications, Pujan Shrestha

LSU Doctoral Dissertations

In 1942, K. Itô published his pioneering paper on stochastic integration with respect to Brownian motion. This work led to the framework for Itô calculus. Note that, Itô calculus is limited in working with knowledge from the future. There have been many generalizations of the stochastic integral in being able to do so. In 2008, W. Ayed and H.-H. Kuo introduced a new stochastic integral by splitting the integrand into the adaptive part and the counterpart called instantly independent. In this doctoral work, we conduct deeper research into the Ayed–Kuo stochastic integral and corresponding anticipating stochastic calculus.

We provide a …

The State Of Agricultural Mechanics In The Preparation Of School-Based Agricultural Education Teachers, Tyler Granberry

LSU Doctoral Dissertations

Agricultural mechanics has become a primary subject area for school-based agricultural education (SBAE). However, despite a long history and high prevalence in SBAE, preservice and in-service SBAE teachers have frequently expressed concerns regarding teaching agricultural mechanics. Research from the early 21st century documented the characteristics of preservice SBAE teacher training in agricultural mechanics on a national level. However, more recent studies have suggested that the agricultural mechanics training requirements for preservice SBAE teachers have changed. The purpose of this study was to compare the level of agricultural mechanics preparation of preservice SBAE teachers between 2000 and 2021. To accomplish this, …

Advanced Communication And Sensing Protocols Using Twisted Light And Engineered Quantum Statistics, Michelle L. Lollie

LSU Doctoral Dissertations

Advanced performance of modern technology at a fundamental physical level is driving new innovations in communication, sensing capability, and information processing. Key to this improvement is the ability to harness the power of physical phenomena at the quantum mechanical level, where light and light-matter interactions produce technological advancement not realizable by classical means. Theoretical investigation into quantum computing, sensing capability beyond classical limits, and quantum information has prompted experimental work to bring state-of-the-art quantum systems to the forefront for commercial use. This dissertation contributes to the latter portion of the work. A set of preliminaries is included highlighting pertinent physical …

Colonial Myths: The Conquest Of Cabeza De Vaca, Willie Hurst

LSU Master's Theses

This thesis examines the relaciónes (report) Naufragios (1542) and Comentarios (1555) with the intention of expanding upon the ample publications already existent on Cabeza de Vaca. With this thesis I offer a contrasting reading and reexamination of both of Cabeza de Vaca’s works. I argue that a number of the scholarly publications on Cabeza de Vaca fail to understand, define, and explore the identity and goals of Cabeza de Vaca as his own unique version of a conqueror which ultimately leads to a misunderstanding and misinterpretation of the texts. After an initial chapter discussing how Cabeza de Vaca never underwent …

Sediment Buffering And Recycling On An Annual To Centennial Scale Along The Mississippi River, Nikki E. Neubeck

LSU Master's Theses

Although the Mississippi River and its tributaries have been investigated for many years, the alteration of the river through dams, levees, and diversions has affected how sediment is transported from source to sink (>10³ y). Previous provenance research using detrital zircon U-Pb dating indicates a slow transport time from source-to-sink, but recent anthropogenic alterations of the river may potentially diminish the transportation time of heavy minerals due to an increase in flow efficiency. The objective of this study is to analyze the degree of buffering and recycling of Mississippi River sediment over a range of short time scales, …

A Novel Endo Gia™ Staple Cartridge For Canine Lung Lobectomies, Alissa St. Blanc

LSU Master's Theses

The canine lungs are well suited for ventilation, gas exchange, and gas transport. In diseased states, changes within bronchi and pulmonary parenchyma alter the blood-gas interface. Diagnostic workups to characterize pulmonary disease may include blood gas analysis, bronchoalveolar lavage, tracheobronchoscopy, radiography and/or computed tomography. Surgical pulmonary diseases include cysts, bullae, and blebs; congenital anomalies; consolidation or abscessation; bronchiectasis; lacerations; lung lobe torsions; and neoplasia. Surgical options may include laceration repair, partial or total lung lobectomy, and pneumonectomy. These options are most commonly utilized in cases that fail medical management. Lung lobectomies were originally performed using suture ligation. Stapling devices have …

Shocking: Using Machine Learning Techniques To Nowcast Lightning Strikes From Station Level Data, Michael D. Broussard

LSU Master's Theses

Lightning strikes are incredibly common and potentially hazardous. Lightning can lead to loss of life, property damage, or can trigger other hazardous events like wildfires. They are also the result of incredibly complex physical processes in the atmosphere, making it challenging to predict strikes. However, given the extensive data and robust analytical techniques available, machine learning methods could be used to establish data relationships between lightning strikes and ground-level atmospheric measurements. Such a model could be used to provide any surface-based weather station with a method for predicting incoming strikes, making it easier to avoid the potentially hazardous effects of …

Intact Mitochondrial Substrate Efflux Is Essential For Prevention Of Tubular Injury In A Sex-Dependent Manner, Allison Mccrimmon, Kerin M. Cahill, Claudia Kruger, Margaret E. Mangelli, Emily Bouffard, Timothy Dobroski, Kelly N. Michanczyk, Susan J. Burke, Robert C. Noland, Daria V. Ilatovskaya, Krisztian Stadler

Division of Basic Science Faculty Publications

The importance of healthy mitochondrial function is implicated in the prevention of chronic kidney disease (CKD) and diabetic kidney disease (DKD). Sex differences also play important roles in DKD. Our previous studies revealed that mitochondrial substrate overload (modeled by homozygous deletion of carnitine acetyl-transferase [CrAT]) in proximal tubules causes renal injury. Here, we demonstrate the importance of intact mitochondrial substrate efflux by titrating the amount of overload through the generation of a heterozygous CrAT-KO model (PT-CrATHET mouse). Intriguingly, these animals developed renal injury similarly to their homozygous counterparts. Mitochondria were structurally and functionally impaired in both sexes. Transcriptomic analyses, however, …

Electrochemical Pumping For Challenging Hydrogen Separations, Gokul Venugopalan, Deepra Bhattacharya, Evan Andrews, Luis Briceno-Mena, José Romagnoli, John Flake, Christopher G. Arges

Faculty Publications

Conventional hydrogen separations from reformed hydrocarbons often deploy a water gas shift (WGS) reactor to convert CO to CO2, followed by adsorption processes to achieve pure hydrogen. The purified hydrogen is then fed to a compressor to deliver hydrogen at high pressures. Electrochemical hydrogen pumps (EHPs) featuring proton-selective polymer electrolyte membranes (PEMs) represent an alternative separation platform with fewer unit operations because they can simultaneously separate and compress hydrogen continuously. In this work, a high-temperature PEM (HT-PEM) EHP purified hydrogen to 99.3%, with greater than 85% hydrogen recovery for feed mixtures containing 25-40% CO. The ion-pair HT-PEM and phosphonic acid …

A Case Study Of The Underrepresentation Of African American Male Educators: Career Choices And Experiences In Secondary Schools, Anthony Wayne Graham Jr

LSU Doctoral Dissertations

The purpose of this intrinsic case study was to examine the career choices and experiences of African American male teachers in secondary grade settings. Participants included 17 African American males who taught core subjects at varying grade levels. All participants worked at schools in the Baton Rouge, Louisiana, metropolitan area. The main source of data collection was completed through semistructured interviews with 17 African American male teachers. I arranged to visit the different schools and address all potential teachers interested in participating in this study. Additionally, I contacted all interested subjects through email. The findings provided important information related to …

Writing Exclusionary Spaces: Myths, Tropes, And Stereotypes Surrounding The Roma In 19th- And 20th-Century French Literature, Jade Scottie Basford

LSU Doctoral Dissertations

The “gypsy” figure has been popular in popular culture for hundreds of years – certainly since the 1600s. The figure can embody wanderlust, difference, bold sexuality, freedom, danger, and criminality. In 19th-century France, the figure’s trendiness was apparent in literature. Writers such as Victor Hugo, George Sand, Charles Nodier, and Prosper Mérimée profited from using these figures in writing. Most criticism of these works focuses on the origins of the tales or critical analyses of the narratives themselves. This research expands upon the extant scholarship to develop an overview of the usage of this figure as it moved throughout the …

Characterizations Of Certain Classes Of Graphs And Matroids, Jagdeep Singh

LSU Doctoral Dissertations

``If a theorem about graphs can be expressed in terms of edges and cycles only, it probably exemplifies a more general theorem about matroids." Most of my work draws inspiration from this assertion, made by Tutte in 1979.

In 2004, Ehrenfeucht, Harju and Rozenberg proved that all graphs can be constructed from complete graphs via a sequence of the operations of complementation, switching edges and non-edges at a vertex, and local complementation. In Chapter 2, we consider the binary matroid analogue of each of these graph operations. We prove that the analogue of the result of Ehrenfeucht et. al. does …

New Transcription For Cello And Piano Of The “Sonata For Violin And Piano” By Uruguayan Composer Hector Tosar, Including A Performance Edition, Analysis, And Biography, Jose Pedro Romero-Ottonello

LSU Doctoral Dissertations

This paper accompanies my transcription for cello and piano of Héctor Alberto Tosar Herrecart’s Sonata for Violin and Piano. It presents a brief study of Tosar's life, documenting his study with various composers in Uruguay and elsewhere, influences on his evolving compositional style, and an analysis of the sonata itself. I examine the manuscripts of other works by Tosar to provide an understanding of his musical language, including his “Serie sinfónica: en cuatro movimientos,” “Sinfonía no. 2 para orquesta de cuerdas,” “Sonatina no. 2. Solitude,” and “Salmo CII: para coro y orquesta.” The purpose of this project is to document …

Experts’ Views On Issues Affecting Egg Labeling In The United States: A Delphi Study, Rexanna Powers

LSU Doctoral Dissertations

When purchasing food, many consumers have reported they question the ethical and humane treatment of products derived from animals at the point of purchase. To complicate this issue further, many U.S. consumers lack exposure, interaction, and involvement with the agricultural industry. As a result, they have reported a willingness to pay premium prices for meats, dairy, and eggs whose packaging suggests quality welfare practices. Therefore, the purpose of this investigation was three-fold: (1) establish operational definitions for poorly understood poultry industry terms, i.e., cage-free, free-range, pasture-raised, and organic; (2) describe experts’ perceptions of the strengths, weaknesses, opportunities, and threats (SWOT) …

Novel Platforms For Large-Scale Adherent Culture Of Mammalian Cells, Ashkan Yekrangsafakar

LSU Doctoral Dissertations

With recent advances in biotechnology, there is a strong and urgent need for robust platforms to culture mammalian cells on a large scale to produce biopharmaceuticals. To this end, various bioreactors have been developed over the past decades, but their capacity and efficiency are often limited by insufficient mass transfer rate and excessive shear stress. In this work, multiple novel bioreactors for the large-scale adherent culture of anchorage-dependent cells were developed.

Hollow MicroCarriers (HMC) was developed as an alternative solution for the microcarrier-based culture system in a stirred-tank bioreactor. In the conventional microcarrier technique, cells are exposed to the harmful …

Folk Elements In Bright Sheng’S Three Fantasies For Violin And Piano: A Performer’S Guide To Interpretation, Kaiyue Zhu

LSU Doctoral Dissertations

In the present age, a wide variety of popular music is composed. Contemporary classical music of the twenty-first century also promotes the development and innovation of world music. All these various genres of music give people a sense of peace and comfort, briefly escaping from the bustle and hurry of busy working lives. Bright Sheng is a Chinese American composer who is one of the representatives of contemporary classical music and has gained attention and popularity in the musical field. The project aims to show how he fuses folk elements and western musical techniques to form his unique musical style …

Corporate Website Disclosures And Financial Reporting Quality, Nicholas Mueller

LSU Doctoral Dissertations

This study examines the relationship between corporate website disclosures and financial reporting quality. Using a sample of the S&P 500 and S&P 400 firms, a voluntary website disclosure score is created by identifying specific website disclosures. After controlling for website disclosure requirements imposed by U.S. stock exchanges, the results indicate that firms with greater website disclosures are associated with lower abnormal accruals and differential persistence of cash flows and operating accruals. Additionally, using the Chen, Miao, and Shevlin (2015) measures for disaggregation quality of financial statement items, the results suggest that the association between financial reporting quality and website disclosures …

Biomechanical Comparisons Of Metacarpophalangeal Joint Arthrodesis Techniques In The Horse, Lawrence Ivan M. Kadic

LSU Master's Theses

INTRODUCTION - Break down injuries resulting in the disruption of the suspensory apparatus, or the development of moderate to severe osteoarthritis of the metacarpophalangeal (MCP) and/or metatarsophalangeal (MTP) joint, are well documented reasons to perform a surgical arthrodesis in horses. The objective of this thesis was to compare the biomechanical characteristics of different arthrodesis techniques for the equine MCP joint.

MATERIALS AND METHODS - The first cadaveric study evaluated the biomechanical properties of two constructs with 5.5 mm broad 10-hole LCP alone or in combination with a 2.0 mm stainless-steel cable under cyclic fatigue testing and single cycle to failure …