Digital Commons Network^™

College Expectation And Matriculation: High School Students Journey To Postsecondary, Sabrina Juanita Johnson

LSU Doctoral Dissertations

Racial group membership and social-economic status (SES) among academically talented students are recognized as powerful predictors of matriculation and college expectations. Moving or transitioning from high school to college is an essential pathway for success in life. Previous research suggests that college enrollment is correlated to resource opportunities available to students that they can access through their relationship with their parents, peers, school staff, teachers, and others.

These relationships are vital in increasing college matriculation by providing academic assistance, emotional support, psychological encouragement, relevant information, and guidance to students in the complex college application process.

College preparatory or outreach programs …

University Faculty Design-Thinking Personas For Online Course Development: A Q Methodological Study, Jennifer Margaret Morrisette

LSU Doctoral Dissertations

To overcome the inherent complexities of planning and implementing effective online learning experiences at scale, it has been suggested that design-thinking tools and practices can be leveraged by faculty and collaborative support staff (e.g., instructional designers). However, little is known about what design-thinking approaches are perceived by faculty to be important to the online course design process, and what tools and practices might be prioritized or avoided given planning stage and individual context. Understanding these nuances would provide much needed insight to align support directly with faculty needs. This study used Q methodology to explore the subjective viewpoints of 20 …

Modeling Distributed Source Control Infrastructure At Neighborhood Scale For Mitigating Flood Risk In Amite River Watershed, Ahmad Amin Shefai

LSU Master's Theses

Flooding has always been a major threat to mankind. This is particularly true in urban areas due to urbanization-induced increasing impervious areas and subsequent increasing urban surface runoff, causing an increasing flooding risk to urban areas in spite of the fact that extensive flood control infrastructure has been constructed. The overall goal of this thesis is to present a distributed source control infrastructure-based approach for mitigating the flood risk. The new flood mitigation approach is demonstrated through the model implementation of a series of distributed source control infrastructure systems in the city of Denham Springs at a neighborhood scale. The …

Detrital Zircon (U-Th)/He Thermochronology In The Greater Caucasus: Implications For Thermal And Tectonic History Along-Strike, Kate Gutterman

LSU Master's Theses

Located along the northernmost boundary of the Arabia-Eurasia collision zone, the Greater Caucasus are a young, actively deforming mountain range striking WNW-ESE between the Black and Caspian Seas. Previous thermochronometric studies predominantly focused on the western portion of the range partially constrain the thermal and tectonic history of the Greater Caucasus. However, due to the complex nature of the tectonics in the region, multiple competing tectonic models have been suggested to explain the exact timing of collision and onset of rapid uplift. Furthermore, the Greater Caucasus exhibit competing along-strike gradients in modern shortening rates, mean annual precipitation, structural architecture and …

U/Pb Zircon Ages Of Felsic Veins In The Sawtooth Metamorphic Complex, Idaho, U.S.A: Implications For Magmatism And Vein Source, Kyle Tollefson

LSU Master's Theses

Veins associated with igneous activity provide numerous insights into the geologic history of an area. The Sawtooth Metamorphic Complex (SMC) in Idaho is a roof pendent of highgrade rocks cross-cut by numerous felsic veins of unknown age and source. Obtaining U/Pb zircon geochronology of these veins can facilitate understanding the ages of magmatism in the region, their source, when nearby batholiths were juxtaposed to the SMC, and provide additional insights into the geologic evolution of the area. Each potential source of these veins has a distinct age: the Sawtooth batholith (ca. 47 Ma), the Idaho batholith (98-53 Ma), an anatectic …

White Paper: From Bound States To The Continuum, Calvin W. Johnson, Kristina D. Launey, Naftali Auerbach, Sonia Bacca, Bruce R. Barrett, Carl R. Brune, Mark A. Caprio, Pierre Descouvemont, W. H. Dickhoff, Charlotte Elster, Patrick J. Fasano, Kevin Fossez, Heiko Hergert, Morten Hjorth-Jensen, Linda Hlophe, Baishan Hu, Rodolfo M. Id Betan, Andrea Idini, Sebastian König, Konstantinos Kravvaris, Dean Lee, Jin Lei, Alexis Mercenne, Rodrigo Navarro Perez, Witold Nazarewicz, Filomena M. Nunes, Marek Płoszajczak, Jimmy Rotureau, Gautam Rupak, Andrey M. Shirokov, Ian Thompson, James P. Vary, Alexander Volya

Faculty Publications

This white paper reports on the discussions of the 2018 Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program ‘From bound states to the continuum: Connecting bound state calculations with scattering and reaction theory’. One of the biggest and most important frontiers in nuclear theory today is to construct better and stronger bridges between bound state calculations and calculations in the continuum, especially scattering and reaction theory, as well as teasing out the influence of the continuum on states near threshold. This is particularly challenging as many-body structure calculations typically use a bound state basis, while reaction calculations more …

Evaluation Of Louisiana Farm To School Programming: Harvest Of The Month And Local Food Procurement, Arin M. Shaffer

LSU Master's Theses

Farm to school is a growing movement that is beginning to draw serious interest in different parts of the United States due to its ability to connect communities with their local producers while providing many benefits. Farm to school entails three main components: school gardening, education and curriculum, and local food procurement. The farm to school movement is relatively new to the state of Louisiana and very little research has been conducted to evaluate the impact of the farm to school programs on local food procurement and the effect on school food environments. Case studies of three Louisiana parish school …

Nutraceuticals & Resistance Exercise Training:Effects On Rate Pressure Product--- An Index Of Myocardial Oxygen Consumption, Junhai Xu

LSU Doctoral Dissertations

The primary purpose of this dissertation was to investigate the acute effect of different REs on the heart, the effect of conventional RE on the heart in combination with nutraceuticals, through measuring rate pressure product (RPP). Three studies were conducted in this dissertation.

The first study was to examine the effect of volume-matched single-set and multiple-set leg press exercise on myocardial energy expenditure. Fourteen healthy untrained college students performed 4 sets of 10 repetitions or 40 repetitions of leg press exercise at 150% body weight on different days. Post-exercise RPP, RPP_diff, RPP_perc, and HR_perc for …

The Implications Of The American Symphonic Heritage In Contemporary Orchestral Modeling, Mathew Lee Ward

LSU Doctoral Dissertations

Disparate priorities between composers, performers, audiences, and institutions have created systemic issues in the sustainability and relevance of symphonic music in modern society. The purpose of this study is to explore the history of the symphonic heritage in the United States with the goal of forming solutions to contemporary issues in the sphere of classical symphonic music. With consideration for the breadth of repertoire, the genre of the symphony is the primary focus, with special attention given to under-represented and under-performed composers. The American symphony orchestra, nonexistent during the founding of the country, has become one of the greatest conduits …

Identification Of Novel Host Genes Required For Antiviral Immunity And Viral Genome Replication In C. Elegans, Fei Meng

LSU Doctoral Dissertations

RNA interference (RNAi) is a wide-spread gene silencing mechanism that control diverse biological functions and triggered by small interfering RNAs (siRNAs) processed from the viral genome or its replication intermediates. Mechanistic studies of antiviral RNAi in Caenorhabditis elegans has led to the identification of several critical factors involved in the process. As a result, whether antiviral RNAi requires additional novel genes remains to be an open question.

Viruses are intracellular parasites that rely on host products for reproduction. Disrupting their interaction with host factors can significantly compromise their replication and keep them under control. Thus, identification of host genes …

Short-Time Dynamics Of Pdms- G-Pdms Bottlebrush Polymer Melts Investigated By Quasi-Elastic Neutron Scattering, Karin J. Bichler, Bruno Jakobi, Victoria García Sakai, Alice Klapproth, Richard A. Mole, Gerald J. Schneider

Faculty Publications

© We have studied the short-time dynamical behavior of polydimethylsiloxane (PDMS) bottlebrush polymers, PDMS-g-PDMS. The samples have similar backbone lengths but different side-chain lengths, resulting in a shape transition. Quasi-elastic neutron scattering was used to observe the dynamical changes inherent to these structural changes. The combination of data from three spectrometers enabled to follow the dynamics over broad frequency and temperature ranges, which included segmental relaxations and more localized motions. The latter, identified as the methyl group rotation, is described by a threefold jump model and shows higher activation energies compared to linear PDMS. The segmental relaxation times, τs, decrease …

An Approach To Counting Vehicles From Pre-Recorded Video Using Computer Algorithms, Mishuk Majumder

LSU Master's Theses

One of the fundamental sources of data for traffic analysis is vehicle counts, which can be conducted either by the traditional manual method or by automated means. Different agencies have guidelines for manual counting, but they are typically prepared for particular conditions. In the case of automated counting, different methods have been applied, but You Only Look Once (YOLO), a recently developed object detection model, presents new potential in automated vehicle counting. The first objective of this study was to formulate general guidelines for manual counting based on experience gained in the field. Another goal of this study was to …

Liminal Liberation: Courtesans And Embodied Anxieties In Sixteenth-Century Venice, Mandonesia Carter

LSU Master's Theses

Invectives against the courtesan—a more educated, erudite, and socially elite version of the ordinary prostitute—were commonplace in early modern Venice. A metropolitan center by the sixteenth century, Venice had become one of the most tolerant cities in Europe, allowing the courtesan to rapidly rise far past her social standing. The courtesan, through strategic self-fashioning and self-promotion, blurred the boundaries of gender roles, class roles, and the conventional social hierarchy. This precipitated attacks from critics seeking to provide clarity of the courtesan’s place and protect the interests of their patriarchal society. This thesis examines representations of the sixteenth-century Venetian courtesan in …

Engineering Characteristics Of Nest Building Geomaterials Used By Mud Dauber Species, Noura Saleh

LSU Master's Theses

Mud dauber wasps construct their nests using soil from adjacent areas. Mud dauber nests have been studied from an entomological perspective. However; the properties of the nest material remain unexplored from a soil engineering perspective. This study investigated the physical and mechanical properties of the nest soil for use in future bio-inspired design to improve soil behavior as a construction material. To achieve this goal, nests from three mud dauber species (black and yellow, organ pipe, and steel blue) were collected from locations near Baton Rouge, Louisiana. The shape, weight, moisture content, organic content, and specific gravity of the nests …

Within-Field Yield Prediction For Sugarcane And Rice Focused On Precision Agriculture Applications, Felippe Hoffmann Silva Karp

LSU Master's Theses

Food and energy security are two main topics when it comes to the on-growing world population. Rice and sugarcane play an important role in this scenario since sugarcane can be used for energy production and rice is one of major staple cereals. In this scenario, Precision Agriculture (PA) management strategies aims to improve productivity, efficiency, profitability, and sustainability, and can help agriculture to fulfill the needs of the growing population in a sustainable way. However, yield maps are essential for PA, but its adoption is still very low. Thus, the main objective of this study was to evaluate the potential …

Insecticide Resistance Management Approaches And Naturally Derived Toxicants For The Control Of Fall Armyworm, Spodoptera Frugiperda, Sarah Mccomic

LSU Master's Theses

Spodoptera frugiperda, the fall armyworm (FAW), is a major agricultural pest causing billions of dollars in damage annually to staple crops. Agricultural losses stemming from this pest continues to increase as resistance to commercialized insecticide classes evolves and spreads. Considering this, novel chemistries with new modes of action as well as novel resistance management strategies need to be developed to achieve continued control of FAW populations. This project consisted of two main goals. First, we aimed to develop a neurophysiological assay to enable a more precise understanding of pyrethroid and organophosphate resistance at the level of the nerve. We …

Recoding The Archive: Memory And Identity In The Photographic And Filmic Works Of Shirin Neshat, Shoja Azari, And Alia Ali, Olivia K. Johnson

LSU Master's Theses

Shirin Neshat, Shoja Azari, and Alia Ali are artists of Middle Eastern descent living and working in the United States, mainly in photographic and filmic modes. Neshat and Azari were born in Iran and immigrated to the U.S. amid the 1979 Iranian Revolution, which drastically changed the political and cultural landscape of the country. Ali was born in Yemen but her father is specifically South Yemeni and her mother Yugoslavian, two countries that no longer exist. As artists experiencing exile and diaspora, with complicated relationships to their home countries, their identities are muddled by hybridity and the struggle between being …

Water-Energy Nexus: Studies On Salinity Gradient Energy Harvest And Desalination, Guangcai Tan

LSU Doctoral Dissertations

Water and energy are fundamentally linked, and both are important for the development of human society. The demand for renewable energy and freshwater are two global challenges in the 21^st century. Herein, a novel chloride-ion (Cl⁻) concentration flow cell (CFC) based on two symmetrical electrodes (BiCl₃, CoCl₂, VCl₃, or BiOCl) separately by a cation-exchange membrane was used as an efficient method to recover salinity gradient (SG) energy. The CFC with metal chloride electrodes (BiCl₃, CoCl₂, and VCl₃) was based on Cl⁻ extraction/insertion, and that …

Adsorption And Reconfiguration Of Amphiphiles At Silica-Water Interfaces: Role Of Electrostatic Interactions, Van Der Waals Forces And Hydrogen Bonds, Yao Wu

LSU Doctoral Dissertations

The ability to explore and predict metastable structures of hybrid self-assemblies is of central importance for the next generation of advanced materials with novel properties. As compared to their thermodynamically stable forms, the kinetically stabilized materials show improved functionality potentially over their stable counterparts. The self-assembly processes usually originate from weak intermolecular interactions, involving a dynamic competition between attractive and repulsive interactions. These weak forces, including van der Waals (vdW), electrostatic interaction and the hydrogen bonding (H-bonding), can be tuned by external stimuli, e.g., confinement, temperature and ionization, and consequently driving hybrid materials into different configurations. It is challenging to …

Methods For 1,2-Cis-Selective O-Glycosylation And Synthesis Of An A. Baumannii Lipooligosaccharide Core Disaccharide, Ashley Fulton

LSU Doctoral Dissertations

This dissertation focuses on the formation of organic thin films on gold surfaces and synthesis of oligosaccharides. Chapter one, is a brief introduction on the utility of thin films, as well as ways to characterize thin films, as well as, a report on the attempt to form organic thin films on Au(111) surfaces using photoredox catalysis.

Glycoconjugates on cell surfaces serve as important mediators of intercellular recognition, adhesion, and viral infection. Due to the significant role that glycoconjugates play on the surface of cells, oligosaccharide synthesis is of great interest. Chapter two, is an extensive review of oligosaccharide synthesis, its …

Three Essays On Variation In Intergenerational Mobility And Incarceration In The United States, Vikash Dangal

LSU Doctoral Dissertations

The U.S. is often called the “land of opportunity” but there are substantial disparities in the opportunity and life outcomes of children depending on where they grow up. The structural factors that shape future outcomes of children can be traced to their childhood environment. This dissertation builds upon the existing literature on childhood environment and future outcomes of children and presents three essays on the variation in intergenerational income mobility and incarceration in the US.

In the first essay in chapter 2, I employ spatial regime analysis to study how the factors affecting absolute upward mobility vary due to local …

Synthesis And Investigation Of Amphiphilic Polypeptoids For Environmental And Biological Applications, Tianyi Yu

LSU Doctoral Dissertations

Polypeptoids are an emerging class of peptidomimetic polymers featuring N-substituted polyglycine backbones. Polypeptoids are cyto-compatible and backbone degradable, making them appealing to many biological applications. When the highly polar polyamide backbone is coupled with non-polar aliphatic side chains, polypeptoids can be considered as facial amphiphiles. Without extensive hydrogen bonding along the backbone, the conformation of polypeptoid is largely controlled by the N-substituent structures. The hydrophobicity-lipophilicity balance of polypeptoids can be readily tuned with the N-substituent structures as well as the molar ratio between the hydrophilic and hydrophobic segments in their copolymers. In view of these combined attributes, …

Neutrino Interaction Classification With A Convolutional Neural Network In The Dune Far Detector, B. Abi, R. Acciarri, M. A. Acero, G. Adamov, D. Adams, M. Adinolfi, Z. Ahmad, J. Ahmed, T. Alion, S. Alonso Monsalve, C. Alt, J. Anderson, C. Andreopoulos, M. P. Andrews, F. Andrianala, S. Andringa, A. Ankowski, M. Antonova, S. Antusch, A. Aranda-Fernandez, A. Ariga, L. O. Arnold, M. A. Arroyave, J. Asaadi, A. Aurisano, V. Aushev, D. Autiero, F. Azfar

Faculty Publications

The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure CP-violation in the neutrino sector as part of a wider physics program. A deep learning approach based on a convolutional neural network has been developed to provide highly efficient and pure selections of electron neutrino and muon neutrino charged-current interactions. The electron neutrino (antineutrino) selection efficiency peaks at 90% (94%) and exceeds 85% (90%) for reconstructed neutrino energies between 2-5 GeV. The muon neutrino (antineutrino) event selection is found to have a maximum efficiency of 96% (97%) and exceeds 90% (95%) efficiency for reconstructed neutrino …

Florpyrauxifen-Benzyl Activity And Use In Louisiana Rice Production, Samer Youssef Rustom Jr.

LSU Doctoral Dissertations

Abstract

Field studies were conducted in 2018 at two locations at the H. Rouse Caffey Rice Research Station (RRS) to evaluate the activity of titrated rates of florpyrauxifen-benzyl on aquatic weeds. Florpyrauxifen-benzyl was applied at 0, 3.6, 7.3, 11, 14.6, 18.3, 22, 25.6, and 29.5 g ai ha^-1into 91-cm diameter galvanized rings containing ducksalad, alligatorweed, cattail, creeping water primrose, grassy arrowhead, and pickerelweed. Ducksalad control was 89 to 99% when treated with all rates of florpyrauxifen at 11 to 29.5 g ha^-1; however, control was reduced to 51 to 79% when treated with rates lower than …

A Study Of 26al(P, Γ)27si With The Silicon Array For Branching Ratio Experiments (Sabre), Erin Courtney Good

LSU Doctoral Dissertations

The observation of the radioisotope ²⁶Al is an indicator of ongoing nucleosynthesis in the Galaxy due to its short lifetime (t_1/2 = 7.2 × 10⁵ yr) on Galactic timescales. It is thought to be synthesized in several different environments in our Galaxy, one of which is in classical novae. Classical novae are stellar explosions that occur on the surface of a white dwarf in a binary system with a main sequence star. The isotopic production resulting from the nucleosynthesis that drives these explosions can be modeled with the input of nuclear reaction rates. In recent years, many …

Height And Body-Mass Index Trajectories Of School-Aged Children And Adolescents From 1985 To 2019 In 200 Countries And Territories: A Pooled Analysis Of 2181 Population-Based Studies With 65 Million Participants, Andrea Rodriguez-Martinez, Bin Zhou, Marisa K. Sophiea, James Bentham, Christopher J. Paciorek, Maria Lc Iurilli, Rodrigo M. Carrillo-Larco, James E. Bennett, Mariachiara Di Cesare, Cristina Taddei, Honor Bixby, Gretchen A. Stevens, Leanne M. Riley, Melanie J. Cowan, Stefan Savin, Goodarz Danaei, Adela Chirita-Emandi, Andre P. Kengne, Young Ho Khang, Avula Laxmaiah, Reza Malekzadeh, J. Jaime Miranda, Jin Soo Moon, Stevo R. Popovic, Thorkild Ia Sørensen, Maroje Soric, Gregor Starc, Ahmad A. Zainuddin, Edward W. Gregg, Zulfiqar A. Bhutta, Robert Black, Leandra Abarca-Gómez, Ziad A. Abdeen, Shynar Abdrakhmanova

Population and Public Health Science Faculty Publications

Background: Comparable global data on health and nutrition of school-aged children and adolescents are scarce. We aimed to estimate age trajectories and time trends in mean height and mean body-mass index (BMI), which measures weight gain beyond what is expected from height gain, for school-aged children and adolescents. Methods: For this pooled analysis, we used a database of cardiometabolic risk factors collated by the Non-Communicable Disease Risk Factor Collaboration. We applied a Bayesian hierarchical model to estimate trends from 1985 to 2019 in mean height and mean BMI in 1-year age groups for ages 5–19 years. The model allowed for …

Quantum Markov Chains Associated With Unitary Quantum Walks, Chul Ki Ko, Hyun Jae Yoo

Journal of Stochastic Analysis

No abstract provided.

Invariant Projections For Covariant Quantum Markov Semigroups, Franco Fagnola, Emanuela Sasso, Veronica Umanità

Journal of Stochastic Analysis

No abstract provided.

Pauli Matrices: A Triple Of Accardi Complementary Observables, Stephen Bruce Sontz

Journal of Stochastic Analysis

No abstract provided.

Preface, Julius Esunge, Brian C. Hall, Ambar N. Sengupta, Aurel Stan

Journal of Stochastic Analysis

No abstract provided.