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2012

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Impact Of Lean Production On Workers' Exposure To Risk In Modular Home Building Manufacturing, Joel James Jan 2012

Impact Of Lean Production On Workers' Exposure To Risk In Modular Home Building Manufacturing, Joel James

LSU Master's Theses

The construction industry records the highest number of work-related injuries and fatalities in the United States according to the Bureau of Labor Statistics. Workers’ exposure to risk may be affected by implementing Lean concepts. This study describes the effects on worker’s safety environment after a Kaizen event, a Lean tool, conducted in three workstations within a modular home manufacturer: base-framing, sheet-rock hanging, and painting. The effects of Lean on safety hazards at each of the three workstations were determined by conducting a Job Safety Analysis (JSA) before and after each Kaizen. Based on the JSAs a risk assessment tool (questionnaire) …

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Linear Pm Generator For Wave Energy Conversion, Rajkumar Parthasarathy Jan 2012

Linear Pm Generator For Wave Energy Conversion, Rajkumar Parthasarathy

LSU Master's Theses

The main objective of this thesis is to design a selected version of linear PM generator and to determine the electromechanical characteristics at variable operating conditions. To reach this objective, the linear generator with quasi-flat linear machine structure was selected and designed using the magnetic circuit theory. By applying 2-D and 3-D FEM the magnetic circuit was optimized and parameters of equivalent circuit were determined. The performance of generator operation are analyzed in steady-state and in dynamic conditions using MATLAB/SIMULINK. The analysis has been carried out at the secondary variable speed, which is changing sinusoidally according to the motion of …

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Immunization Of West Nile Recombinant Envelope Domain Iii With Equine Cd40 Ligand Protein Vaccine Induced Specific Immune Response In Rabbits And Horses, Shiliang Anthony Liu Jan 2012

Immunization Of West Nile Recombinant Envelope Domain Iii With Equine Cd40 Ligand Protein Vaccine Induced Specific Immune Response In Rabbits And Horses, Shiliang Anthony Liu

LSU Master's Theses

West Nile virus (WNV) is one of several flaviruses known to infect mammalian species, including humans. There were 15,257 horse cases reported in 2002 and 1,086 in 2006 in United States. Recently, significant increases in equine and human cases have been reported in United States. Domain III of the WNV envelope protein binds to cellular receptors, and induces a significant portion of the neutralizing antibody response against the virus. CD40 Ligand (CD40L, CD154) enhances productive interactions between T cells and APC and has been shown to function as a potential adjuvant. In this study, we constructed and expressed a fusion …

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The Biomechanics Of Salt Marsh Vegetation Applied To Wave And Surge Attenuation, James Chatagnier Jan 2012

The Biomechanics Of Salt Marsh Vegetation Applied To Wave And Surge Attenuation, James Chatagnier

LSU Master's Theses

The Northern coast of the Gulf of Mexico is threatened by storm surge and waves from tropical storms. It has been long known that marsh vegetation attenuates storm surge and waves and is vital for sustaining marsh edges. However, little is known about the relationship between plant properties and the amount of storm surge and wave reduction the plants provide. In order to better understand the stiffness properties and physical dimensions of saltmarsh vegetation, which are directly related to their ability to attenuate waves and storm surge, this study has been conducted. Stiffness of salt marsh vegetation was determined through …

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Teacher Insights On High-Stakes Standardized Assessments: The Impact Of School Reform Policy On The Classroom, Jennifer Timmer Jan 2012

Teacher Insights On High-Stakes Standardized Assessments: The Impact Of School Reform Policy On The Classroom, Jennifer Timmer

LSU Master's Theses

Education reform policies have focused on high-stakes assessments primarily utilizing standardized tests for accountability purposes. As testing practices have evolved due to a variety of factors throughout the past century or so, they have become fully integrated into public schooling in the United States. These tests are having a marked impact on teachers and education, as teachers feel pressure to produce exceptional student results and modify their instructional practices, often “teaching to the test” and narrowing the curriculum in order to focus on the requirements of the mandates. This study examines a survey of public school teachers to ascertain their …

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Determining The Performance Of Breakwaters During High Energy Events: A Case Study Of The Holly Beach Breakwater System, Andrew Keane Woodroof Jan 2012

Determining The Performance Of Breakwaters During High Energy Events: A Case Study Of The Holly Beach Breakwater System, Andrew Keane Woodroof

LSU Master's Theses

Breakwaters have been constructed in many areas along Louisiana’s coastline to protect the shoreline from wave energy and erosion. During normal conditions, these breakwaters can typically be analyzed using traditional empirical methods for emergent breakwaters. However, Louisiana’s coastline is under constant threat from tropical storms and hurricanes, during which breakwaters can frequently become overtopped or submerged systems. Recent studies show that the type of shoreline response to a breakwater system may vary depending on the crest height of the breakwater in relation to the mean water level. Though emergent breakwaters typically induce sediment accretion along the shoreline, studies using laboratory …

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Holding-Responsible And Liability, Luke Kosinski Jan 2012

Holding-Responsible And Liability, Luke Kosinski

LSU Master's Theses

This thesis is an attempt to separate holding-responsible from accountability, where accountability is understood as being the substratum or ground of one’s acts, the subject-cause. It begins from François Raffoul’s rethinking of responsibility in his book, The Origins of Responsibility, as separate from accountability and asks if holding-responsible is possible on such an account. Holding-responsible is examined through the work of Friedrich Nietzsche, Harry Frankfurt, and Martin Heidegger. In Nietzsche, the phenomenological roots of the terms are examined in the breeding of an animal that can promise, the relationship between a creditor and an ower, and the belief that debt …

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Improving Discourse Structure Identification, Jamie Allison Guidry Jan 2012

Improving Discourse Structure Identification, Jamie Allison Guidry

LSU Master's Theses

Rhetorical Structure Theory (Mann et al. 1988), a popular approach for analyzing discourse coherence, suggests that coherent text can be placed into a hierarchical organization of clauses. Identification of a text’s rhetorical structure through automatic discourse analysis is a crucial element for many of today’s Natural Language Processing tasks, but no sufficient tool is available. The current state-of -the-art discourse parser, SPADE (Soricut et al. 2003), is limited to parsing discourse within a single sentence. HILDA (Hernault et al. 2010) extends the parsing abilities of SPADE to the document level, but with a decrease in performance. This study achieved document-level …

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Advances In Quantum Optical Metrology And The Establishment Of An Invisible Quantum Tripwire, Steven Blane Mccracken Jan 2012

Advances In Quantum Optical Metrology And The Establishment Of An Invisible Quantum Tripwire, Steven Blane Mccracken

LSU Doctoral Dissertations

This thesis presents a summary of the foundation and background of the field of quantum optics, and an analysis of some recent discoveries in various fields of which I have aided in furthering investigative research and advancement through publications. Such topics include numerical optimization of generalized quantum states used in phase sensitive quantum metrology, an analysis of object detection through the use of quantum interferometry in the presence of lossy conditions, and the use of the latter technique to propose an invisible quantum tripwire. First is a collaborative effort to numerically optimize quantum optical states for quantum metrological applications. We …

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Texting Laws And Cell Phone Users: Motivations For Texting While Driving, Jonathan Ferrante Jan 2012

Texting Laws And Cell Phone Users: Motivations For Texting While Driving, Jonathan Ferrante

LSU Master's Theses

ABSTRACT Legal scholars, academics, and industry researchers have indicated that using cell phones when driving is among the most dangerous hazard faced by motorists today. This relatively new technology is embedded in the lives of most people, at all times of the day, including when behind the wheel of a car. Harvard and National Highway Traffic Safety Administration researchers have exposed the dangers of cell phones and driving, but a solution to curtail the problem has yet to be found. This study seeks to understand the motivations and mediating factors affecting texting and driving law compliance by cell phone users. …

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A Single-Subject Study Examining The Effects Of A Behavioral Intervention For Verbal Recurrent Perserveration, Jenifer Juengling-Sudkamp Jan 2012

A Single-Subject Study Examining The Effects Of A Behavioral Intervention For Verbal Recurrent Perserveration, Jenifer Juengling-Sudkamp

LSU Doctoral Dissertations

BACKGROUND: Approximately 1 million people in the United States suffer from aphasia and > 50% of those people may demonstrate recurrent perseverations. No consensus has been forthcoming on whether (1) a therapy that directly confronts clients with imminent pre-articulatory automatisms (the perseverations) or (2) a more typical neuropsychological therapy that eschews any direct confrontation with automatic behaviors works best. PURPOSE: The purpose of this study was to determine the treatment efficacy of a non-confrontational picture naming intervention on naming ability in individuals with aphasia and recurrent perseverations. METHODS: This is a prospective single-subject ABAB multiple baseline design replicated across 3 right-handed …

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Advice In Troubles Talk Conversations Between Strangers: The Role Of Problem Seriousness And The Impact Of Advice On Helper Supportiveness And The Desire For Future Interactions, Andrea Jean Vickery Jan 2012

Advice In Troubles Talk Conversations Between Strangers: The Role Of Problem Seriousness And The Impact Of Advice On Helper Supportiveness And The Desire For Future Interactions, Andrea Jean Vickery

LSU Master's Theses

In troubles talk conversations, problems are disclosed and discussed. When responding to problem disclosures, advice is one common response where the respondent recommends how to think, feel or act in response to a problem. This thesis focuses on extending our understanding of advice messages, with a main research question focused on determining if advice occurs in initial interactions between strangers. Through an analysis of 125 transcribed conversations, advice was present in 38.4% (n = 44) of the conversations. Advice was offered in response to less serious problems, supporting the first hypothesis. There was no support found for the positive association …

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I Saw Life, David Clayton Williams Jan 2012

I Saw Life, David Clayton Williams

LSU Master's Theses

My thesis embodies the uncertainties and reservations that surround one’s mortality. Dealing with the loss of my father who suddenly passed away two and a half years ago has sparked an emotionally driven artistic process. The abruptness of my Dad being alive one second and with little or no warning deceased the next has impacted my work tremendously. My goal has been to evoke and share the very human emotions that occur during the erratic stages of grief. This research acknowledges the ‘black and white’ absolutes of living and dying, yet those ideas are juxtaposed with the many gray areas …

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Low-Order Modeling Of Micro-Flier Impact With Thin Stationary Energetic Targets, Mark B. Fry Jan 2012

Low-Order Modeling Of Micro-Flier Impact With Thin Stationary Energetic Targets, Mark B. Fry

LSU Master's Theses

The impact of high-speed (500-1500 m/s), laser driven micro-fliers with thin energetic targets (10-100 &# 956;m) is being examined to characterize impact-induced heating and combustion of these materials. Aluminum fliers are propelled by a laser into a thin metallic target plate having a layer of energetic material deposited on its backside. Mass spectrometry is performed in vacuo on the energetic side to interrogate the shock-induced chemistry of the energetic material. It is important to ignite and possibly detonate the energetic material without perforation of the target plate avoiding contamination of the vacuum chamber. To guide development of these experiments, a …

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Synthesis, Cellular Studies, And Computational Analysis Of Porphyrin And Bodipy Conjugates With Affinity For Epidermal Growth Factor Receptor, Alecia Michelle Mccall Jan 2012

Synthesis, Cellular Studies, And Computational Analysis Of Porphyrin And Bodipy Conjugates With Affinity For Epidermal Growth Factor Receptor, Alecia Michelle Mccall

LSU Doctoral Dissertations

Chapter 1 is a description of the basic fundamental concepts of porphyrins and BODIPYs, (including synthetic methodologies), a general mechanism of the processes of EGFR, and computational concepts that are elaborated upon in future chapters. Chapter 2 is a discussion solely on the porphyrins that were synthesized to be used as fluorophores for EGFR-targeted conjugates, both peptidic and non-peptidic. The porphyrins were primarily synthesized via the Lindsey method as well as by O-alkylation of tetrahydroxy porphyrins. Synthesis of PEG linkages are discussed as well through three methodologies. Chapter 3 is a presentation of the synthesis, characterization, cellular studies, and computational …

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New Coding/Decoding Techniques For Wireless Communication Systems, Yonas Gebregziabher Debessu Jan 2012

New Coding/Decoding Techniques For Wireless Communication Systems, Yonas Gebregziabher Debessu

LSU Doctoral Dissertations

Wireless communication encompasses cellular telephony systems (mobile communication), wireless sensor networks, satellite communication systems and many other applications. Studies relevant to wireless communication deal with maintaining reliable and efficient exchange of information between the transmitter and receiver over a wireless channel. The most practical approach to facilitate reliable communication is using channel coding. In this dissertation we propose novel coding and decoding approaches for practical wireless systems. These approaches include variable-rate convolutional encoder, modified turbo decoder for local content in Single-Frequency Networks, and blind encoder parameter estimation for turbo codes. On the other hand, energy efficiency is major performance issue …

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Measurement Of Pain, Pain Disability, And Pain Beliefs Of Morbidly Obese Adults, Brooke Louise Barbera Jan 2012

Measurement Of Pain, Pain Disability, And Pain Beliefs Of Morbidly Obese Adults, Brooke Louise Barbera

LSU Doctoral Dissertations

Both obesity and pain are pervasive public health problems, contributing to significant disability in the United States and worldwide. Studies have demonstrated a positive association between obesity and pain, with increasing BMI related to increasing levels of pain intensity; however, the mechanisms underlying this relationship are not well understood. The present study assessed the presence of pain, pain-related disability, and pain beliefs in a morbidly obese (BMI > 40 kg/m2) sample participating in a medically-supervised, nonsurgical weight loss intervention. After controlling for demographic variables and depression, pain was reported in 36.7% of the sample (N = 390). Results indicated that greater …

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Skill Assessment And Optimization Of The Third Generation Wave Models For Applications In Gulf Of Mexico, Seyed Mostafa Siadatmousavi Jan 2012

Skill Assessment And Optimization Of The Third Generation Wave Models For Applications In Gulf Of Mexico, Seyed Mostafa Siadatmousavi

LSU Doctoral Dissertations

Numerical phase-averaged wave models are the best option to obtain the spatial and temporal distribution of the wave energy over a large domain, such as the Gulf of Mexico. Parallel implementation of unstructured SWAN and WAVEWATCH-III were engaged in this research to evaluate the performance of third generation wave models for different conditions. Met-ocean data from a network of NDBC buoys and WAVCIS stations were used to assess the predictive skills of the wave models. Deep water wave energy dissipation formulations were carefully analyzed and modified to improve the accuracy of the bulk wave parameters. Moreover, the importance of the …

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Pregnancy And The Relationship To Age-Related Macular Degeneration, Ann Hardin Shaw Jan 2012

Pregnancy And The Relationship To Age-Related Macular Degeneration, Ann Hardin Shaw

LSU Master's Theses

The Macular Study was a case control study that evaluated if parity and other participant characteristics predicted the diagnosis of age-related macular degeneration (AMD). Women, compared to men, are at higher risk for AMD. AMD is one of the leading causes of blindness in the elderly population [1]. Docosahexaenoic acid (DHA, 22:6n-3) is a long-chain fatty acid that is essential for the structure and function of the eye. During pregnancy the growing fetus depletes the maternal stores of DHA through placental transfer. The fetus needs an ample supply of DHA for proper retinal and central nervous system development. To date …

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Modulation Of Mesenchymal Stem Cell Behavior By Nano And Micro-Sized Beta-Tricalcium Phosphate Particles In Suspension And Composite Structures, Lekeith Terrell Jan 2012

Modulation Of Mesenchymal Stem Cell Behavior By Nano And Micro-Sized Beta-Tricalcium Phosphate Particles In Suspension And Composite Structures, Lekeith Terrell

LSU Master's Theses

Nano and micro particles have steadily grown in interest for synthetic bone composite structures. Nano and micro sized calcium phosphates especially are of interest because of the osteoinductive behavior of calcium phosphate. Engineered composites incorporating polymers and ceramics, such as poly l-lactic acid (PLLA)/β-TCP, for bone tissue regeneration have been well investigated for their proliferative and osteoinductive abilities. Limited research has been done to thoroughly investigate the effects of various sized β-TCP particles on human mesenchymal stem cell behavior. Foreign bodies are known to elicit an inflammatory and cytotoxic response and several nano-particles are known to elicit cytotoxic and pro-inflammatory …

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Recurrent Novae And Type Ia Supernova Progenitors, Ashley Sara Pagnotta Jan 2012

Recurrent Novae And Type Ia Supernova Progenitors, Ashley Sara Pagnotta

LSU Doctoral Dissertations

We investigated two types of stellar explosions, recurrent novae (RNe) and Type Ia supernovae (SNe Ia). SNe Ia are the most useful distance markers in astrophysics, but we do not know the identity of their progenitor systems. RNe are good progenitor candidates that consist of a white dwarf (WD) that accretes material from a companion star. The material builds on the surface of the WD until a runaway thermonuclear eruption is triggered, which ejects the accreted material and causes the system to brighten dramatically. We studied the demographics of the nova population and concluded that approximately 25% of classical novae …

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Climate Change Displacement And Global Governance: A Case Study Of Three Intergovernmental Organizations And The Conflict Between The Member States And Bureaucracy, Andrea C. S. Berringer Jan 2012

Climate Change Displacement And Global Governance: A Case Study Of Three Intergovernmental Organizations And The Conflict Between The Member States And Bureaucracy, Andrea C. S. Berringer

LSU Doctoral Dissertations

Climate change is a topic most often broached by environmental scientists and activists and its effects are discussed in terms of animal populations and atmospheric events. However, its direct effect on human life is yet to garner such attention. A changing climate will affect how people are able to use their environment, if at all. Sea level rise and desertification will force a shift in human habitation. How the world seeks to deal with this shift is yet to be seen. The global governance of climate change-induced displacement is currently at the stage of ad hoc development. Legal and conceptual …

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Decoding Comics: Essential Elements For Transcription, Ni Tyjah Thigpen Jan 2012

Decoding Comics: Essential Elements For Transcription, Ni Tyjah Thigpen

LSU Master's Theses

Comics (plural in form but used with a singular verb as defined by Scott McCloud, Understanding Comics: The Invisible Art, HarperPerennial) provides a fresh perspective on the interaction of culture and language and spans from simple one-frame comics to graphic novels. Speech in comics is fully interpretable only in relation to the other elements; therefore a transcription system that includes them all is necessary. I have developed a unique transcription method which incorporates all the salient aspects of comic art revealing the linguistic codes embedded within. I show that transcription techniques, while primarily focused on speech, can also be applied …

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Reduced Protein For Late-Lactation Dairy Cows, Andre De Barros Duarte Pereira Jan 2012

Reduced Protein For Late-Lactation Dairy Cows, Andre De Barros Duarte Pereira

LSU Master's Theses

Excess protein in dairy cattle diets unnecessarily increases the cost of production and may contribute to environmental pollution. The objective of this research was to evaluate the effect of feeding dairy cows with two levels of dietary protein on animal performance and manure characteristics. Two experiments were carried out with 24 lactating dairy cows each. Experiment 1 was corn silage based and had a control TMR (HP1) estimated to contain 16.5% CP with SBM and treatment TMR (LP1; 13.5% CP) using DDGS and rumen protected Lys and Met. Experiment 2 was ryegrass haylage based and had a control TMR (HP2) …

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Effect Of Instructional Methodologies On Student Achievement Modeling Instruction Vs. Traditional Instruction, Jacqueline Grace Barker Jan 2012

Effect Of Instructional Methodologies On Student Achievement Modeling Instruction Vs. Traditional Instruction, Jacqueline Grace Barker

LSU Master's Theses

ABSTRACT Different teaching styles can impact student learning in many ways. The purpose of this study was to determine the effectiveness of Modeling Instruction on student achievement in a high school Chemistry course. Different tests were used to compare the data at the beginning of a school year and at the end of the school year. The tests used were to determine gains in chemistry content knowledge, abilities to reason scientifically, and attitudes about learning chemistry. The control group was taught by traditional instruction through the use of lecture, note-taking, and textbook guided assignments. The experimental group was taught by …

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Hurricane Damage Assessment Process For Residential Buildings, Carol C. Massarra Jan 2012

Hurricane Damage Assessment Process For Residential Buildings, Carol C. Massarra

LSU Master's Theses

Assessing an affected area immediately after a severe natural hazard event and saving the resulting data are vitally important in any effort to reduce future economic losses from natural hazards. These data are used as a record of buildings performance and as a major component for statistical analysis and damage modeling studies. Since these data are used as input for these studies, the data must be assessed and collected in a scientific and standardized way. Despite this requirement, neither a systematic damage assessment process nor a standardized data collection protocol is currently available in the United States to ensure that …

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Design And Optimization Of 2.5 Dimension Porous Media Micromodel For Nanosensor Flow Experiments, Saade Alexis Bou-Mikael Jan 2012

Design And Optimization Of 2.5 Dimension Porous Media Micromodel For Nanosensor Flow Experiments, Saade Alexis Bou-Mikael

LSU Master's Theses

Micromodels are used to visualize and study pore-scale phenomena such as immiscible displacements in porous media, foam flow behavior, and CO2 flooding. The understanding gained from these experiments can be used to develop models to predict future behavior of the reservoir. Most micromodels are constructed using lithography techniques that are restricted to 2D patterns that require artificial generation or manipulation of images to develop connected micromodels. Characteristics innate to the original rock structure are often lost or skewed in developing micromodels that bear little resemblance to the original media. Alternative microfabrication techniques using a micromilling tool have allowed us to …

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Online Reviews And Consumers' Willingness To Pay: The Role Of Uncertainty, Yinglu Wu Jan 2012

Online Reviews And Consumers' Willingness To Pay: The Role Of Uncertainty, Yinglu Wu

LSU Doctoral Dissertations

Empirical studies of online reviews have found that valence (average rating) has a consistently positive impact on consumers’ willingness to pay (WTP), but volume does not. Although two studies tried to explain this phenomenon using different perspectives (Wu and Ayala, 2012; Sun, 2012), neither study can fully accommodate the consumer behaviors observed by the other. This dissertation adopts a theoretical framework that can explain the consumer behaviors observed in both studies as well as the varying influence of review volume at the individual level. Specifically, several studies were conducted to investigate the relationship between bidirectional online seller reviews (e.g., the …

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An Investigation Into The Moderating Role Of Fear Appeals On The Relationship Between Regulatory Fit And Persuasion, Nam Young Kim Jan 2012

An Investigation Into The Moderating Role Of Fear Appeals On The Relationship Between Regulatory Fit And Persuasion, Nam Young Kim

LSU Doctoral Dissertations

As one of the ways to persuade young people effectively, several scholars have indicated that using a tailored message that is consistent with individuals’ concerns and interests can influence their attitude and behavioral changes. Among diverse tactics to construct tailored health-messages, this research especially paid attention to individuals’ motivational goals (i.e., regulatory focus) that make them more inclined to a certain outcome. While promotion-oriented individuals primarily focus on how to achieve a desired ending, prevention-oriented individuals mainly focus on avoiding undesirable outcomes (Higgins, 1997; Higgins et al., 2001). Although numerous studies support the positive effects of the congruency between regulatory …

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Base-Caged Adenosine Triphosphate As A Model System For Photoactivatable Small Interfering Rna, Amanda Yoesting Hendrix Jan 2012

Base-Caged Adenosine Triphosphate As A Model System For Photoactivatable Small Interfering Rna, Amanda Yoesting Hendrix

LSU Master's Theses

Photocaged adenosine triphosphate (ATP) is one of the earliest examples of exerting spatial-temporal control over the activity of a substrate. The activity of ATP is blocked until near-ultraviolet light exposure photocleaves the cage moiety. Caged ATP has been used for a myriad of applications including kinetic studies of ATP-dependent enzymes. Traditional caging of ATP occurs at the gamma-phosphate, which has been found to competitively inhibit several enzymatic systems. It was hypothesized that blocking access to the adenosine N6 position via cage molecule would prevent the initial enzyme-substrate binding event from occurring prior to photolysis, effectively minimizing competitive inhibition. Utilizing a …

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