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2015

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A Quantitative Study Using Constructist Learning Activities To Connect Biology Concepts To Local Environmental Issues In A Non-Major Introductory College Biology Course, Michaelyn Broussard Jan 2015

A Quantitative Study Using Constructist Learning Activities To Connect Biology Concepts To Local Environmental Issues In A Non-Major Introductory College Biology Course, Michaelyn Broussard

LSU Doctoral Dissertations

Among the general population, there has continued to be a struggle to improve environmental literacy with the knowledge, attitude, and awareness of basic environmental issues locally and nationally. Despite efforts through many formal and informal programs, the result nationally has indicated little to no understanding of basic environmental issues (Coyle, 2005). Many educators such as Sobel (1996, 2004) and Louv (2005) have documented the lack of positive outdoor experiences or environmental behaviors. The purpose of this study was to incorporate local environmental examples through constructivist learning techniques within a general biology non-major course to promote an increase in environmental literacy …

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In The Shadow Of Big Oil A Media Content Analysis Of The 'Big Oil' Stigma, Camille Nicole Ivy-O'Donnell Jan 2015

In The Shadow Of Big Oil A Media Content Analysis Of The 'Big Oil' Stigma, Camille Nicole Ivy-O'Donnell

LSU Master's Theses

This study examined media frames newspapers use in their coverage of the oil and gas industry. A content analysis was conducted to analyze if the oil and gas industry was portrayed positively or negatively in Louisiana newspapers compared to Texas newspapers and how the coverage between states differs. This comprehensive content analysis of print media coverage analyzed newspaper articles and provided a detailed explanation of results about how the oil and gas industry was portrayed over a five-year period of time as compared to other studies, which only analyzed the industry during a crisis period. Through categorization of the frames …

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Social Media Networks: The Social Influence Of Sentiment Content In Online Conversations On Dynamic Patterns Of Adoption And Diffusion, Tung Cu Jan 2015

Social Media Networks: The Social Influence Of Sentiment Content In Online Conversations On Dynamic Patterns Of Adoption And Diffusion, Tung Cu

LSU Doctoral Dissertations

The current study is focusing on diffusion and adoption of new digital artifacts. The goal is to explore the social role of user-generated content (UGC) during the diffusion process of digital artifacts in the context of online social networks. The study spans a wide range of analytics methods and tools such as predictive modeling, latent sentiment analysis, data retrieval, and other tools of time-series analysis & visualization. Data collection is conducted on 260 new digital products and more than 105 thousand social network nodes. Results of the study provide a deeper insight into the influence of textual UGC sentiment on …

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Essays In Labor Economics, Sukriye Elif Filiz Jan 2015

Essays In Labor Economics, Sukriye Elif Filiz

LSU Doctoral Dissertations

In this dissertation, I present three distinct topics on labor economics that can be read independently from one another. In the first chapter, using matched mother-child data from the National Longitudinal Survey of Youth, I investigate the impact of mothers’ involuntary job loss on children’s academic achievement. In the next chapter, I examine the impact of eye and hair color on wages-at-first-job after schooling. In addition, I investigate whether hair color has an impact on the wage-at-the-first-job if the individual resides among people who have similar features. In the last chapter, I examine the impact of unemployment insurance benefit generosity …

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The Stratal Architecture Of The False River Point Bar (Lower Mississippi River, La), Alexandra Lechnowskyj Jan 2015

The Stratal Architecture Of The False River Point Bar (Lower Mississippi River, La), Alexandra Lechnowskyj

LSU Master's Theses

The False River point bar system is located roughly thirty miles north of Baton Rouge, LA. It is an oxbow lake cut off from the Mississippi River, and represents a large-scale modern analogue to the ancient systems of northeastern Alberta, Canada, specifically those of the Athabasca Oils Sands. While previous work has been done regarding the general architecture of a point bar, there is still omplexity associated with larger scale systems, as studies have been mostly based on small and medium-scale examples. Examination of the point bar was done through a combination of coring and geophysical logging, followed by software …

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High School Musicians' And Non-Musicians' Listening Preference For Authentic Versus Transcribed Musical Excerpts, Colin Douglas Caldarera Jan 2015

High School Musicians' And Non-Musicians' Listening Preference For Authentic Versus Transcribed Musical Excerpts, Colin Douglas Caldarera

LSU Master's Theses

The purpose of this study was to (a) determine high school musician’s and non-musician’s preference for authentic and transcribed orchestral and band recordings, and (b) examine participant perceptual responses regarding reasons for preference. Therefore, the following research questions guided this investigation: (a) To what extent do musicians’ and non-musicians’ preference ratings of paired musical selections (one played by band and one played by orchestra) differ when rated on a Likert scale after listening? and (b) What are the reasons for preferring one excerpt type over another? The participants were musicians (n = 40) and non-musicians (n = 40) in grades …

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Expertise And Disbelief: Post-1945 American Attitudes Toward The Authority Of Knowledge, Terry Wagner Jan 2015

Expertise And Disbelief: Post-1945 American Attitudes Toward The Authority Of Knowledge, Terry Wagner

LSU Doctoral Dissertations

“You can’t beat brains,” said President John Kennedy of the intellectuals and technicians he assembled in his cabinet. Kennedy was perhaps the greatest political champion for the virtues of expertise. However, all over America during the 1960s and ‘70s, diverse groups voiced doubts about how much experts, such as social scientists, policy specialists, and others, actually improved life. This dissertation examines how movements on the political left and right, and spiritual ruptures such as the rise of ‘60s counterculture and of evangelicalism, spoke in different language to express a similar point: human mastery over the world is profoundly limited. Many …

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Correcting The Conversation: An Argument For A Public Health Perspective Approach To University Timely Warnings About Sexual Assault, Ashley Hesson Jan 2015

Correcting The Conversation: An Argument For A Public Health Perspective Approach To University Timely Warnings About Sexual Assault, Ashley Hesson

LSU Master's Theses

Reports of sexual violence should be written from a public health perspective approach to appropriately frame the occurrence and encourage accurate understandings of sexual assault as a larger societal issue. This research consists of two studies to investigate the way universities do (and should) communicate about sexual violence with their students. For Study 1, interviews were conducted with a random sample of public state Universities regarding their emergency alert processes and template usage to determine current emergency communication practices. The majority of universities contacted do not have a template or best practice guidelines in place for creating timely warnings. For …

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Investigations Into Ecogeomorphodynamics Of Coastal Embryo Dunes At Padre Island National Seashore, Texas, Katherine Anne Renken Jan 2015

Investigations Into Ecogeomorphodynamics Of Coastal Embryo Dunes At Padre Island National Seashore, Texas, Katherine Anne Renken

LSU Doctoral Dissertations

This dissertation is an investigation into the interplay between vegetation and aeolian processes in the coastal embryo dune environment at Padre Island National Seashore, Texas. Vegetation is a geomorphic agent, altering aeolian process dynamics. This research adopted a three-pronged approach to improving our understanding of ecogeomorphodynamics in the coastal environment. The first study analyzed large-scale spatiotemporal trends in the vegetation community of the embryo dune environment in order to contextualize smaller scale aeolian processes. Results of this study demonstrated that there was a clear transition in community assemblage from the seaward edge of the embryo dune zone, where species functioned …

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A Science Education Study Using Visual Cognition And Eye Tracking To Explore Medication Selection In The Novice Versus Expert Nurse Anesthetist, Aimee Ladreyt Badeaux Jan 2015

A Science Education Study Using Visual Cognition And Eye Tracking To Explore Medication Selection In The Novice Versus Expert Nurse Anesthetist, Aimee Ladreyt Badeaux

LSU Doctoral Dissertations

The purpose of this science education study is to explore visual cognition and eye tracking during medication selection in the student nurse anesthetist (first year and second year students) and the expert nurse anesthetist. The first phase of this study consisted of the selection of a specific medication (target) from an array of medications via computer simulation. Various dependent variables were recorded to examine performance (reaction time and accuracy), and the allocation of visual attention was measured with eye tracking (dwell proportion, verification, and guidance). The second phase of this study included the administration of a demographic and post experiment …

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Development And Evaluation Of Fiber And Pectin Based Delivery Systems For Delivering Lactobacillus Plantarum , Arranee Chotiko Jan 2015

Development And Evaluation Of Fiber And Pectin Based Delivery Systems For Delivering Lactobacillus Plantarum , Arranee Chotiko

LSU Doctoral Dissertations

Probiotics may improve gut microbial composition and immune function. Introduction of probiotics via foods or supplements may result in the probiotics not surviving during processing and passage through the stomach to the large intestine. The overall objective of this study was to develop and investigate three delivery systems for delivering live probiotic cells (Lactobacillus plantarum NRRL B-4496) (LP). The three delivery systems were: (1) immobilized LP (~108-109 CFU/mL LP Free Cells) on purple rice bran fiber (PRF) (Delivery system 1), (2) encapsulated LP with combined pectin-rice bran extract (Delivery system 2), and (3) double encapsulated LP …

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Catalysts For The Positional Isomerization Of Internal, Long-Chain Olefins, James Edward Bruno Jan 2015

Catalysts For The Positional Isomerization Of Internal, Long-Chain Olefins, James Edward Bruno

LSU Doctoral Dissertations

Double-bond isomerization of internal C16-C18 olefins is a necessary step in the production of paper sizing agents. In this work, the properties that enable long-lasting solid acid catalysts (both commercial and lab-synthesized) were identified, the efficacy of regenerated solid acid catalysts was tested, and the feasibility of organometallic chain-walking catalysts (both homogeneous and polymer-supported) for olefin isomerization was evaluated. Hexadecene isomerization was investigated using perfluorinated ion exchange resins (Nafion®) supported on SiO2 or Al2O3, sulfonated poly(styrene-co-divinylbenzene) resins (PS-DVBs), tungstated zirconias, and acidic zeolites. Selected catalysts underwent lifetime studies. Oversulfonated PS-DVBs (e.g., Amberlyst 35) were reasonably selective with long lifetimes, only …

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Developing Co-Current And Counter-Current Spray Drying Computational Fluid Dynamics (Cfd) Simulation Studies To Predict The Quality Of Microencapsulated Fish Oil With Egg White Hydrolysates Powders, Kevin Estuardo Mis Solval Jan 2015

Developing Co-Current And Counter-Current Spray Drying Computational Fluid Dynamics (Cfd) Simulation Studies To Predict The Quality Of Microencapsulated Fish Oil With Egg White Hydrolysates Powders, Kevin Estuardo Mis Solval

LSU Doctoral Dissertations

Eggs are an excellent source of high quality protein containing all essential amino acids (EAA) including leucine. Food-grade protein hydrolysates can enhance the growth of lactic acid bacteria (LAB). Thermal degradation of bioactives normally occurs during microencapsulation by spray drying. Spray drying modeling using computational tools is essential to engineer new food powders and to minimize and thermal degradation of bioactives. The first chapter of this work discusses the optimization of an enzymatic process in terms of reaction temperature, pH, enzyme:substrate ratio, and reaction time using a response surface methodology (RSM) to produce food-grade protein hydrolysates from egg whites (EWH). …

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Two Essays On Institutional Investors And U.S. Bank Holding Companies, Hui Wang Jan 2015

Two Essays On Institutional Investors And U.S. Bank Holding Companies, Hui Wang

LSU Doctoral Dissertations

This dissertation studies institutional investment in U.S. bank holding companies (BHCs). The first essay examines institutional investing preferences in U.S. banks and the impact of expansion of bank power on the preferences. Institutional investors prefer BHCs that hold more liquid assets, are better capitalized and larger in size, have better loan quality, lower stock return volatility and less derivative trading. In addition, the expansion of bank power is welcomed by various types of institutional investors, except for long-term institutions. Institutional investors also become less risk-averse when investing in BHCs that have expanded into non-banking business. However, the increased complexity and …

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My Choice, My Fraternity, And My Engagement: Experiences Of White Men In Black Greek Letter Organizations (Bglo), Kourtney Prentice Gray Jan 2015

My Choice, My Fraternity, And My Engagement: Experiences Of White Men In Black Greek Letter Organizations (Bglo), Kourtney Prentice Gray

LSU Doctoral Dissertations

This qualitative study grounded in the theoretical framework and research of Alexander Astin’s Student Engagement Theory, with support from Critical Race Theory and Terrell Strayhorn’s work on Sense of Student Belonging, utilizes a methodological case-study approach with multiple units of analysis. In an effort to understand the choice, ownership, and engagement of White men who hold membership in Black Greek Letter Organizations (BGLO), this study utilized the counter-narrative tenant presented and supported by Critical Race Theory to examine the racial identity and engagement of fraternity men from a pluralistic experience. Additionally, the researcher hypothesized that there is a special experience …

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Evaluation Of Louisiana Friction Rating Table By Field Measurements, Yogendra Prasad Subedi Jan 2015

Evaluation Of Louisiana Friction Rating Table By Field Measurements, Yogendra Prasad Subedi

LSU Master's Theses

This study aims to evaluate the current Louisiana Department of Transportation and Development (LADOTD) friction rating table by field measurements and provide recommendations for the frictional mix design guidelines. The current friction rating table is based on the Polished Stone Value (PSV) of coarse aggregate as the only surface friction guideline in a wearing course mixture design, which is only one of many factors that affect the pavement surface friction. To achieve the objective, the pavement surface friction and texture properties were measured using Lock-Wheel Skid Trailer (LWST), Dynamic Friction Tester (DFT) and Circular Track Meter (CTM). Twenty two different …

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Evaluation Of Teacher Ratings To Improve Child Language Screenings In Speech-Language Pathology, Kyomi Dana Gregory Jan 2015

Evaluation Of Teacher Ratings To Improve Child Language Screenings In Speech-Language Pathology, Kyomi Dana Gregory

LSU Doctoral Dissertations

The purpose of this study was to examine the validity of teacher ratings for screening children’s language skills. Teacher ratings were measured through the use of two tools, the Children’s Communication Checklist-2 (CCC-2; Bishop, 2006) and the Teacher Rating of Oral Language and Literacy (TROLL; Dickinson, McCabe, & Sprague, 2001). The data for this study were from 77 kindergarteners who lived in rural Louisiana and spoke a non-mainstream dialect of English; 51 were classified as typically developing and 26 as presenting with Specific Language Impairment. Convergent validity was examined by comparing the two teacher rating tools to each other and …

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Healing-On-Demand Polymer Composites Based On Shape Memory Polyurethane Fibers And Polymeric Artificial Muscles, Pengfei Zhang Jan 2015

Healing-On-Demand Polymer Composites Based On Shape Memory Polyurethane Fibers And Polymeric Artificial Muscles, Pengfei Zhang

LSU Doctoral Dissertations

In this dissertation, the healing-on-demand polymer composites based on shape memory polyurethane fibers and artificial muscles are investigated, for understanding and developing a novel healing-on-demand composite so that it would be used for industrial applications that could heal structural-length scale damage and leaking autonomously, repeatedly, efficiently, timely, and molecularly. Firstly, the structural relaxation behavior of shape memory polyurethane (SMPU) fiber was studied by theoretical analysis and experimental test. Then, a self-healing composite based on cold-drawn short SMPU fiber was prepared and tested for evaluating its crack-healing performance. After that, polymer artificial muscle based healing-on-demand composite was developed and characterized. Based …

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How Local Nonprofit Organizations Can Use Narratives To Build Organizational-Public Relationships On Digital Media, Ryan Patrick Delaune Jan 2015

How Local Nonprofit Organizations Can Use Narratives To Build Organizational-Public Relationships On Digital Media, Ryan Patrick Delaune

LSU Master's Theses

The nonprofit sector’s adaptation and implementation of digital media is one that has received surprisingly little exploration. While some research has been conducted in this area, these studies tend to generalize results across all organization types within the nonprofit sector. Often, these studies overlook specific advantages nonprofits of varying types, sizes, and locations may potentially have in regard to fostering relationships with their communities. This study explores how these differences may impact organizational use of digital media, and how organizations can potentially use these media to more efficiently achieve their goals. Specifically, this study focuses on the use of narratives …

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Topological Dynamics On Compact Phase Spaces, Lieth Abdalateef Majed Jan 2015

Topological Dynamics On Compact Phase Spaces, Lieth Abdalateef Majed

LSU Doctoral Dissertations

Our main focus will be to investigate the various facets of what are commonly called dynamical systems or flows, which are triples $(S,X,\pi)$, where $X$ is a compact Hausdorff space and $\pi:S \times X \longrightarrow X$ is a separately continuous action of a semigroup $S$ on $X$. Historically, as was introduced by R.Ellis 1960, the enveloping semigroup, which is a closure of the set of continuous functions on a compact space $X$, was discovered to be an important tool to study dynamical systems. Soon, a realization of the existence of a universal compactification of a phase semigroup with an extended …

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A Spatial Analysis Of Obesity And Its Associations With The Built And Natural Environment, Physical Inactivity, And Socioeconomic And Demographic Conditions In The United States Of America, Mustafa Erdem Jan 2015

A Spatial Analysis Of Obesity And Its Associations With The Built And Natural Environment, Physical Inactivity, And Socioeconomic And Demographic Conditions In The United States Of America, Mustafa Erdem

LSU Doctoral Dissertations

Obesity has strong genetic determinants but the genetic composition of the population does not change rapidly. Thus in this study, the major changes in non-genetic factors such as the development of obesogenic environments and shifting socioeconomic status and lifestyle of individuals are hypothesized to increase the risk of obesity. As the prevalence of obesity continue to increase worldwide with substantial attention in the US, a clearer understanding of how spatial associations between obesity and confounding factors are interrelated is crucial to better tackle the issue of obesity. This study employs the ‘global’ and ‘local’ Exploratory Spatial Data Analysis (ESDA) methods …

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Optimal Location Of Biomethane Gas Manufacturing Plants And Allocation Of Feedstock And Liquified Carbon Product, Bingqing Wu Jan 2015

Optimal Location Of Biomethane Gas Manufacturing Plants And Allocation Of Feedstock And Liquified Carbon Product, Bingqing Wu

LSU Doctoral Dissertations

Biomethane gas (BMG), known for its sustainability, low environmental impact, and high profitability, has received wide attention in recent years. To facilitate the process of making strategic plans for building a BMG production system, this dissertation leverages the mathematical modeling and optimization techniques to minimize the supply chain cost for such a system. Typical elements in a BMG production system consist of the local farms that produce the feedstock, the hubs that collect and store the feedstock produced by farms, the reactors that generate BMG from the feedstock transported from the hubs, the condensers that liquefy the BMG from the …

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Classification In The Presence Of Ordered Classes And Weighted Evaluative Attributes, Forrest Justin Osterman Jan 2015

Classification In The Presence Of Ordered Classes And Weighted Evaluative Attributes, Forrest Justin Osterman

LSU Doctoral Dissertations

We are interested in an important family of problems in the interface of the Multi-Attribute Decision-Making and Data Mining fields. This is a special case of the general classification problem, in which records describing entities of interest have been expressed in terms of a number of evaluative attributes. These attributes are associated with weights of importance, and both the data and the classes are ordinal. Our goal is to use historical records and the corresponding decisions to best estimate the class values of new data points in a way consistent with prior classification decisions, without knowledge of the weights of …

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Engagement Across The Pond: The Nfl's Attempts To Increase Social Media Engagement Through The Cultural Targeting Of Messages, Isabelle Moore Jan 2015

Engagement Across The Pond: The Nfl's Attempts To Increase Social Media Engagement Through The Cultural Targeting Of Messages, Isabelle Moore

LSU Master's Theses

With more and more sports organizations reaching saturation points in their current home markets, the search for new, untapped, international audiences is on. Reaching out to these new markets has been made much more simple by the digitization of communication, and particularly the global spread of social media. The NFL, as the United States’ most popular sports league has been targeting the United Kingdom as it’s next market since the mid-2000s, and has gone as far as setting up a separate UK branch of their communications division (NFL UK). The NFL faces several challenges in engaging new fans in this …

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Does The Pcaob Inspection Have An Effect On Audit Fees And Audit Quality?, Elizabeth Schwartzhoff Johnson Jan 2015

Does The Pcaob Inspection Have An Effect On Audit Fees And Audit Quality?, Elizabeth Schwartzhoff Johnson

LSU Doctoral Dissertations

I investigate the effects of the issuance of the PCAOB Part II report on audit fees and audit quality. The PCAOB replaced the peer review auditor program with an independent inspection of audit firms. Upon completion of each inspection, the PCAOB issues inspection reports that include a public portion (Part I) of identified audit deficiencies, and most include a nonpublic portion (Part II) of identified quality control weaknesses which is not disclosed publicly unless the audit firm does not sufficiently complete remediation during the next 12 months. Upon issuance of the Part II report, I find that audit firms experience …

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A Model Of The Tonal-Chromatic System And Its Application To Selected Works Of Gustav Mahler, Andrew David Nicolette Jan 2015

A Model Of The Tonal-Chromatic System And Its Application To Selected Works Of Gustav Mahler, Andrew David Nicolette

LSU Doctoral Dissertations

During the latter half of the twentieth century there was a marked shift in the way that many scholars approached analysis of late-nineteenth-century tonality. This shift in approach was motivated by the behavior and interaction of harmonic and melodic entities encountered in the music of the great composers of the nineteenth century, such as Schubert, Schumann, Brahms, Mahler, Wagner, and Strauss. The question arose: did the diatonic system remain at the heart of tonality during the late nineteenth century, or—as some propose—did a new chromatic-based tonality emerge? The acceptance of this new chromatic-based tonality is at the heart of this …

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Informal Landscape Architecture: A Tool To Improve Water Quality For Informal Settlements Along Waterways In Bangkok, Jidapa Chayakul Jan 2015

Informal Landscape Architecture: A Tool To Improve Water Quality For Informal Settlements Along Waterways In Bangkok, Jidapa Chayakul

LSU Master's Theses

The canals of Bangkok were a vital form of infrastructure from when the city was founded in 1782 until the 1850s, when the road system was introduced. Built for agricultural irrigation, the canals served as the primary means of transportation and significantly influenced the form and orientation of Bangkok’s early settlements and public institutions. With the implementation of roads, new buildings were constructed to be oriented towards the streets and away from the canals. The canals and their communities subsequently decreased in visibility. Today, most of the land along the waterways is publically owned. As a result, the land adjacent …

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Functional Interplay Between Neurocognitive Decline And Risk Factors In Older Adults: A Multivariate Latent Growth Curve Model Of Risk, Rebecca Kathryn Macaulay Jan 2015

Functional Interplay Between Neurocognitive Decline And Risk Factors In Older Adults: A Multivariate Latent Growth Curve Model Of Risk, Rebecca Kathryn Macaulay

LSU Doctoral Dissertations

Alzheimer’s disease (AD) is a heterogeneous brain disease with multiple interacting risk factors, suggesting equifinality. Research indicates that the pathophysiological processes involved in AD are evident years prior to disease onset with significant variability in neurocognitive functioning being apparent during preclinical stages. Identification of individuals in preclinical stages is vital, as earlier interventions may prove more effective at ameliorating AD’s devastating effects. In this respect, clarifying relationships between risk factors and neurocognitive functioning in cognitively intact older adults can improve our understanding of mechanisms involved in preclinical AD, which may allow for earlier detection and intervention. The present study employed …

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Engagement Levels During Implementation Of Co-Teaching Models, Cathy Lee Eschete Jan 2015

Engagement Levels During Implementation Of Co-Teaching Models, Cathy Lee Eschete

LSU Doctoral Dissertations

Student engagement in the classroom is a priority for educators and policy makers because disengaged students are more likely to perform poorly in school. Students with disabilities, particularly those with high-incidence disabilities, are a subset of that population of potentially disengaged and definitely poor-performing students. When attending school, they are served increasingly in inclusive, co-taught settings, allowing for inquiry into engagement practices in these instructional arrangements. One purpose of this study was document levels of student engagement for six commonly described co-teaching models implemented in a teacher education course for both special education and general education preservice teacher candidates and …

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Biogenesis And Redox Transition Of Iron-Sulfur Clusters In Proteins, Aaron Paul Landry Jan 2015

Biogenesis And Redox Transition Of Iron-Sulfur Clusters In Proteins, Aaron Paul Landry

LSU Doctoral Dissertations

Iron-sulfur proteins comprise one of the most ubiquitous and conserved classes of proteins in biology. The diverse functions of iron-sulfur clusters in proteins range from electron transfer to redox signaling. The assembly of iron-sulfur clusters in cells requires a complex protein system and acquisition of sulfur and iron. While the sulfur source for iron-sulfur cluster assembly is well-established, the iron source remains elusive. The first part of this work provides new evidence for the hypothesis that the conserved iron-sulfur cluster assembly protein IscA may act as the iron donor for iron-sulfur cluster assembly. Iron-sulfur clusters in proteins are also vulnerable …

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