Digital Commons Network^™

Paleoclimatology And Paleotempestology Study Of Blue Hole, Lighthouse Reef, Belize Through Geochemical Proxies, Laura Carolyn Sorey

LSU Master's Theses

A large Pleistocene age sinkhole, the Blue Hole on Lighthouse Reef off the coast of Belize in the Caribbean Sea is the site of a well preserved sedimentary record that serves as paleoclimatology and paleotempestology archive. The nutrient-starved surface waters of the Blue Hole and the surrounding lagoons are “fertilized” by the seasonal introduction of cool, nutrient-rich waters upwelled from the Caribbean deep water. These waters, which stimulate production of organic materials within the surface waters, carry a heightened isotopic signature that is imparted to the organics resultant from upwelling-induced production. These organics are then incorporated into the predominantly carbonate …

Methods For The Characterization Of Deep-Sea Benthic Megafauna In The Vicinity Of The Deepwater Horizon Macondo Well, Stephanie Marie Sharuga

LSU Doctoral Dissertations

Soft-sediment benthic environments are amongst the largest marine ecosystems in the world and play important roles in many ecosystem functions. In recent years, exploitation of resources and unintentional impacts on deep-sea benthic environments has increased. The Deepwater Horizon oil spill of 2010 in the northern Gulf of Mexico (GoM) represented a prime example of this. The oil spill not only highlighted deficiencies of data and information on baseline conditions, but also represented an opportunity to learn more and develop better methods for the future. Deep-sea imaging platforms such as autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs) have been …

Built To Play, Forrest Sincoff Gard

LSU Master's Theses

Built to Play is an interactive art exhibition featuring four participatory installations. Each installation transforms non-playful objects and activities into handmade porcelain replicas used for exciting gallery made games. Focusing on the carry over from child’s play to adult play the exhibition emphasizes the importance of play in our adult lives. As gallery visitors risk breaking handmade ceramic objects for a moment of fun and a chance to win art as a prize, their interaction completes the exhibition.

Essays On Technology And International Trade, Xianliang Tian

LSU Doctoral Dissertations

The three essays contained in this dissertation are about technology and international trade. The first essay examines optimal intellectual property rights (IPR) protection in developing countries, while the other two estimate product quality at the sectoral level for a panel of twelve manufacturing sectors in twenty OECD countries using a novel approach and relate import competition and R&D investment to the growth of sectoral product quality. Chapter 2 is motivated by the work of Acemoglu and Zilibotti (2001), who argue that the technologies developed in the North are not appropriate for the needs of the South, due to a ``technology-skill …

Wonderland, Jeremy Joseph Grassman

LSU Master's Theses

Wonderland is a film about a fictitious, alternate dark society, free of original thought and action. The people toil day to day in a mechanized fashion. All characters are predictable and unquestioning except for our protagonist. He seems to think something is not quite right, and possibly he discovers it too late. Wonderland is a world in which the people work, sleep and repeat this procedure daily with no end until retirement. The story takes place on the last day before our hero’s retirement. What is the next adventure to come? It must be better than the past comprised of …

Black And Gifted: Hiding In Plain View, Deanna Lynn Hayes-Wilson

LSU Doctoral Dissertations

Abstract This dissertation examines representation of African Americans in gifted programs in an urban school district where the creation of gifted programs was enacted as a tool for desegregation. The research is conducted from the perspectives of gifted African American students in an effort to shed some light on whether an achievement gap exists or is the makeup of the program itself a deterrent to the enrollment of African American students. A qualitative study was conducted using personal narratives from students who were enrolled in a self-contained gifted program in the urban school districts. The participants gave personal interviews where …

The Spatial-Temporal Prediction Of Various Crime Types In Houston, Tx Based On Hot-Spot Techniques, Shuzhan Fan

LSU Master's Theses

A series of hotspot mapping theories and methods have been proposed to predict where and when a crime will happen. Each method has its strengths and weaknesses. In addition, the predictive accuracy of each hotspot method varies depending on the study area, crime type, parameter settings of each method, etc. The predictive accuracy of hotspot methods can be quantified by three measures, which include the hit rate, the predictive accuracy index (PAI), and the recapture rate index (RRI). This thesis research applied eight hotspot mapping techniques from the crime analysis field to predict crime hotspot patterns. In addition, these hotspot …

Continuous Reservoir Modeling Updating By Integrating Experimental Data Using An Ensemble Kalman Filter, Ting Sun

LSU Doctoral Dissertations

The continuous researvoir model updating is widely used to calibrate reservoir simulation models to production data, but many challenges remain. First, few real field data are available to test the new history matching method, and most of the data sets are synthetic cases. Second, computational cost may be high when using non-Gaussian priors or nonlinear models. Third, with large complex models, the simulation runs and history matching method require huge memory allocations. This dissertation achieves a continuous reservoir model updating workflow with a meter-scale , two-phase flow experiment. Both production and seismic data are collected in the experiment. Because the …

The Journeyers, Alyson Pomerantz

LSU Master's Theses

On May 3, 1932, Minnie Zenkel’s Original Yiddish Puppet Theater, located in the heart of the Lower East Side’s “Yiddish Rialto,” burns down under mysterious circumstances. The police suspect arson but there are no persons of interest, and the theater’s namesake, a twenty-year old female puppeteer, disappears just after the fire; some believe she has stolen the theater’s original scripts in an act of revenge. Eighty years later the successor puppet theater once again finds itself without a home, when it receives word that developers want to raze the theater, now in Tribeca, and construct a forty-foot hotel. In the …

Systematics And Species Delimitation In New Guinea Skink Species Complexes (Squamata: Scincidae), Eric Nikolaus Rittmeyer

LSU Doctoral Dissertations

Though among the most controversial topics in systematic and evolutionary biology, species are a fundamental unit in biology, and are utilized by and critical to a wide variety of studies in the life sciences. Despite this importance, little work has focused on developing and examining objective methods for species delimitation until recently. Further, New Guinea and the surrounding regions are among the most diverse and geologically complex regions globally, yet the region remains poorly explored biologically, and little work has examined the evolutionary history of the fauna in the region. To investigate the influence of factors such as sampling intensity, …

Report And Recommendations Of The Balance Of Crop Research Working Group Of The National Agricultural Research, Extension, Education And Economics (Nareee) Advisory Board, Mark Mclellan, Leo Holt, Twilya L'Ecuyer, Robert Taylor, Julia Sabin, Milo Shult, Anne Marie Thro, Paul Heisey

Biology Faculty Publications and Presentations

In December of 2012, the President’s Council of Advisors on Science & Technology (PCAST) issued a report to the President on Agricultural Preparedness and the Agriculture Research Enterprise. The PCAST report recognizes the long-term history of public investment in agricultural research. The report also recognized significant private investment into agricultural research. Significantly, the report is adamant that the agricultural research enterprise is not prepared to meet the challenges of the 21st century. The report cited two reasons:

1. too little competitive research and
2. an imbalance of research priorities between private and public funding sources.

This report addresses the latter issue.

Members …

“Gathering Thinglessness”: Samuel Beckett’S Essayistic Approach To Nothing, Dena Marks

LSU Doctoral Dissertations

My dissertation, “Gathering Thinglessness”: Samuel Beckett’s Essayistic Approach to Nothing, responds to the dominant strand in Beckett criticism that figures the writer as a philosopher of “nothing” whether of Democritean, existentialist, or deconstructionist voids. In contrast, I argue that Beckett’s literary texts approximate philosophy in their essayistic style, characterized by the incorporation of multiple, contradictory sources in a fragmented form. While philosophical analyses are often designed to demonstrate that the literary texts are the equivalent of philosophical discourse, in the first chapter I argue that they actually serve to re-subordinate literature to philosophy since they depend on the pre-existing philosophical …

Autism Severity And Comorbid Symptoms In Children With Asd, Jina Jang

LSU Master's Theses

Individuals with autism spectrum disorder (ASD) are reported to evince high rates of comorbid symptoms. Co-occurring disorders among individuals with ASD are often difficult to assess and diagnose accurately. Also, comorbid conditions frequently exacerbate symptoms of ASD. Different treatment regimens may be effective for comorbid symptoms in ASD; however, research looking at comorbid symptoms and ASD is limited. The current study aimed to extend the literature in this area by examining the relationship between ASD and comorbid symptoms. First, the current study assessed how often and how severely comorbid symptoms were endorsed. Further, autism severity was used to predict comorbid …

Power System Differential Model With Application To Grid Dynamic Simulation, Boyu Wang

LSU Master's Theses

Nonlinearity of power system is always one of the difficulties when dealing with dynamic simulation of power systems. Solving differential-algebraic equations representing power systems are difficult without losing nonlinearity, especially for large power systems. This thesis shows an alternative method to solve nonlinear dynamical power system by producing a purely differential representation of the power systems. This new representation converts the algebraic equations to differential equations in order to have an absolute differential system. By using Runge-Kutta algorithm to solve this differential system, the results of the power system simulations are compared to trapezoidal integration algorithm commonly used to solve …

Framework Development For A Performance-Based Specifications For Asphaltic Concrete Pavements, Harshavardhan Challa

LSU Master's Theses

The objective of this study was to develop a framework for performance-based specifications (PBS) which rely on the fundamental mechanistic asphalt mixture properties as performance predictors, verified to actual field performance, to compliment current QC/QA specifications for Louisiana. Nine asphalt paving projects were selected across the state with a total of 14 pavement sections that included 21 asphalt mixtures. A suite of laboratory tests using the Hamburg loaded-wheel tracking (LWT) test and the Semi-Circular Bending (SCB) were performed to evaluate the rutting and cracking resistance, respectively. In addition, the Indirect tensile dynamic modulus test (IDT E*) was conducted to evaluate …

Echoes And Artifacts, Molly Elizabeth Miller

LSU Master's Theses

Architecture has many different contexts and meanings, but regardless of time and place, buildings act as a physical container of memory. This body of work explores the use of large facades as residue of a personal memory and uses physical deterioration to parallel the distortion of memory as a result of time and emotion. The work makes use of warping and tearing of materials and is created through the combination of large-scale relief prints, drawing, sewing, and the cutting away of materials. The exhibition includes an installation of fabric-based prints, a series of wall-based altered paper prints, and several artist …

Vocal Fold Analysis From High Speed Videoendoscopic Data, Jing Chen

LSU Doctoral Dissertations

High speed videoendoscopy (HSV) of the larynx far surpasses the limits of videostroboscopy in evaluating the vocal fold vibratory behavior by providing much higher frame rate. HSV enables the visualization of vocal fold vibratory pattern within an actual glottic cycle. This very detailed infor-mation on vocal fold vibratory characteristics could provide valuable information for the assessment of vocal fold vibratory function in disordered voices and the treatments effects of the behavioral, medical and surgical treatment procedures. In this work, we aim at addressing the problem of classi-fying voice disorders with varying etiology by following four steps described shortly. Our method-ology …

Analysis Of Hydrodynamic Drag Forces Acting On Suspended Fine Particle In Porous Media, Seyed Amin Mirsaeidi Farahani

LSU Doctoral Dissertations

An important class of flow and transport problems occurring in porous media involves the interactions between suspended fine particles and the moving fluid at Stokes limit. Historically, due to the complicated geometries of porous media, researchers have had to resort to simplifying assumptions to conceptualize the underlying physics. However, the advent of high performance computing, in recent decades, has made it possible to vigorously investigate this problem at the streamline scale level. In this work, the flow problem is solved by means of a finite-element model. The simulations results are used to compute the drag forces experienced by suspended fine …

Administrator Perceptions Of Intramural Coed Flag Football Modifications: A Qualitative Analysis, Zacharias Wood

LSU Master's Theses

Coed sport environments can be paradoxical settings where pre-existing gender biases influence participants’ enjoyment and success. Furthermore, gendered messages and stereotypes as well as low expectations for females within coed sports can create participation barriers by reducing feelings of confidence and performance. Within Campus Recreation, intramural sport administrators have a significant role in determining participation opportunities and experiences. This investigation examined administrators’ perspectives about coed intramural flag football gender modifications. Specifically, three research questions guided this study: (a) how do intramural administrators view coed flag football gender modifications?; (b) to what extent do intramural administrators perceive gender modifications to impact …

Exploring Invariant Hybrid Color Image Features For Face Recognition Under Illumination Variation, Jayesh Mohan

LSU Master's Theses

In this thesis, a novel analysis framework is presented in order to automate testing response of an image-feature descriptor algorithm for face recognition under different illumination conditions and white balance calibration over intra- and inter-color space. The experimental results on the OPFD database show that our analysis framework finds the least sensitive channel of a color space for recognizing a face under unknown illumination, unknown white balance, and the both unknown illumination and white balance conditions. The results also show the combination of channels in a color space which are best suited face recognition.

Clarinet Thumb-Rest Function: The Pedagogy Of Positioning And Electromyography Evidence, Kathryn Elise Young

LSU Doctoral Dissertations

Clarinetists bear the weight of their instrument on their right thumb using a small metal attachment called a thumb-rest. The soprano clarinet weighs only two pounds, but many hours of playing can cause general discomfort to severe overuse injury throughout the upper right limb. There is a debate within the clarinet community about the best position of the thumb-rest, yet no quantitative research has been conducted on this issue. This document establishes a historical and modern context for the use of the clarinet thumb-rest. It reviews traditional and non-traditional medical approaches that individuals use to help clarinetists with supporting the …

Bayesian Saltwater Intrusion Prediction And Remediation Design Under Uncertainty, Nima Chitsazan

LSU Doctoral Dissertations

Groundwater resources are vital for sustainable economic and demographic developments. Reliable prediction of groundwater head and contaminant transport is necessary for sustainable management of the groundwater resources. However, the groundwater simulation models are subjected to uncertainty in their predictions. The goals of this research are to: (1) quantify the uncertainty in the groundwater model predictions and (2) investigate the impact of the quantified uncertainty on the aquifer remediation designs. To pursue the first goal, this study generalizes the Bayesian model averaging (BMA) method and introduces the hierarchical Bayesian model averaging (HBMA) method that segregates and prioritizes sources of uncertainty in …

"Music Down In My Soul:" Achieving A Sound Ideal For Moses Hogan Spirituals, Loneka Wilkinson Battiste

LSU Doctoral Dissertations

ABSTRACT In 1995, Moses Hogan ushered in a resurgence of interest in the arranged spiritual at the national conference of the American Choral Directors Association in Washington, D. C. The impact of his arrangements was so profound that today he is widely recognized as being responsible for the mid-1990’s revitalization of interest in the arranged spiritual. In a day when various opinions abound on how Moses Hogan’s spirituals should be performed, the purpose of this study was to describe and define the sound ideal for Moses Hogan spirituals. Qualitative methods were used for the collection and analysis of data relevant …

Flesh, Blood, And Puffed-Up Livers: The Theological, Political, And Social Contexts Behind The 1550-1551 Written Eucharistic Debate Between Thomas Cranmer And Stephen Gardiner, Amanda Wrenn Allen

LSU Doctoral Dissertations

In 1550 Thomas Cranmer wrote A Defence of the True and Catholike Doctrine of the body and bloud of our saviour Christ. This theological work sparked a written debate between him and leading English traditionalist Stephen Gardiner in 1551. This dissertation outlines the differences between Cranmer’s newly asserted Reformed understanding of a Spiritual Presence in the Eucharist and Gardiner’s traditional doctrine of Real Presence, more commonly termed transubstantiation. The dissertation analyzes the three-book exchange between these bishops and explains how each uses the same Scripture, writings of the early Church Fathers, and contemporary Continental Reformers to establish their very different …

Essays On Corporate Innovation, Lai Van Vo

LSU Doctoral Dissertations

In this dissertation, I explore the underlying mechanisms through which a firm innovates and invests in Research and Development (R&D). It consists of two essays. The initial essay investigates the effects of aggregate stock market liquidity on innovation at both the aggregate and firm levels for publicly traded firms in the U.S., and shows a significant and positive effect at both levels of aggregation. Next, the essay provides two underlying mechanisms through which aggregate stock liquidity enhances innovation. First, high stock market liquidity reduces the cost of raising external capital, making it easier for firms, especially for small firms and …

Evaluating Teaching Efficiency In Reading And Spelling Instruction, Sarah Joanne Miller

LSU Doctoral Dissertations

Reading and spelling are essential skills for a student’s educational success. The current literature on spelling instruction has examined a variety of spelling modalities, but has never directly compared written versus oral spelling. There are theoretical and empirical indications that either method may be superior to the other. Thus, study one directly compared written and oral spelling instruction for their rates of spelling acquisition as well as generalization to reading. The results of study 1 indicated that written spelling was superior to oral spelling in rates of acquisition of both spelling and reading accuracy. Previous research has also indicated that …

Pah Degradation In Wetland Soils As Influenced By Redox Potential, Haoxuan Zhang

LSU Master's Theses

Polycyclic aromatic hydrocarbons (PAHs) are a common contaminant in wetland soils. They are a group of compounds widely distributed in the environment and tend to accumulate in soils. Major contribution to removal of PAHs is biological degradation. For investigating the biodegradation potential of PAHs influenced by tidal actions, equipment was built for simulating the tidal actions, and concentrations of phenanthrene, pyrene, and benzo[e]pyrene were added to the soils samples which were collected from wetland. Experiments were then conducted over 120 days. Redox potentials and PAHs concentrations were measured and analyzed. Results are concluded: 1) influenced by tidal action, phenanthrene, pyrene, …

The Birth Of A Drone Nation: American Unmanned Aerial Vehicles Since 1917, Garrett Dale Mckinnon

LSU Master's Theses

Drones have entered American consciousness and society. Little attention, however, has been paid to how America got here, how it became a drone nation. This thesis seeks to counter the “New Drone” misconception, the general ignorance of drone history present in the historiography, and popular perception of the subject. Chapter one, “The “New Drone” Misconception: Unmanned Aerial Vehicles in the World Wars,” examines America’s first experiments with military drones. Charles Kettering, “Hap” Arnold, and Reginald Denny were among the first to recognize UAV potential and garner American support. The main motivation for drone use--removing American soldiers from danger--was first recognized …

Image Enhancement Methods And Applications In Computational Photography, Qinchun Qian

LSU Doctoral Dissertations

Computational photography is currently a rapidly developing and cutting-edge topic in applied optics, image sensors and image processing fields to go beyond the limitations of traditional photography. The innovations of computational photography allow the photographer not only merely to take an image, but also, more importantly, to perform computations on the captured image data. Good examples of these innovations include high dynamic range imaging, focus stacking, super-resolution, motion deblurring and so on. Although extensive work has been done to explore image enhancement techniques in each subfield of computational photography, attention has seldom been given to study of the image enhancement …

Legacy Phosphorus Implications In The Lake Pontchartrain Estuary Sediment Due To The 2011 Bonnet Carre Spillway Opening, Nhan Thanh Nguyen

LSU Master's Theses

Phosphorus (P) is an essential nutrient for life and excess P in aquatic systems can trigger algal blooms. Nutrient-rich Mississippi River water is diverted into the Lake Pontchartrain estuary (LPE) periodically through the Bonnet Carré Spillway (BCS) to avoid downstream flooding to the city of New Orleans, Louisiana and can significantly increase the internal P load in the sediment. A sequential P fractionation procedure was performed on sediments collected before the opening and after the closing of the 2011 BCS operation to understand the role of these large river diversions on P dynamics. Before the 2011 BCS opening, 10,368 Mt …