Digital Commons Network^™

Biologically Dominated Engineered Coastal Breakwaters, Jon David Risinger

LSU Doctoral Dissertations

Coastal land loss in Louisiana is occurring at astounding rates. New technologies for shoreline protection are needed that incorporate traditional engineering designs with natural systems (e.g., oyster reefs). Under optimal environmental conditions eastern Oysters (Crassotrea virginica) can biologically dominate artificial concrete reef structures used as coastal breakwaters within the intertidal zone. These reefs can also serve as oyster broodstock sanctuaries providing a nexus to the public oyster grounds benefiting the aquaculture industry. The use of biologically dominated, engineered breakwaters may provide a viable solution to coastal restoration and shoreline protection challenges. Biologically dominated coastal breakwaters can be integrated into coastal …

Novel Surface Modifications And New Nanostructured Titania Synthesis For High-Performance Lithium-Ion Batteries And Solar Cells, Dongsheng Guan

LSU Doctoral Dissertations

With the rapid development of electronic devices, electrical vehicles and space aerocrafts, rechargeable lithium-ion batteries (LIBs) have attract numerous interests due to high energy and power density, long lifespan and low self discharge. Spinel LiMn2O4 is a promising cathode material for novel LIBs thanks to high working potential, easy synthesis and low cost, but its severe capacity drop mostly due to inevitable reactions with electrolytes is a drawback. In the dissertation, ultrathin and highly-conformal Al2O3 coatings are grown on the surface of micro-sized and nanosized LiMn2O4 with atomic layer deposition. Thickness of Al2O3 ALD coatings can be precisely controlled by …

A Critical Ethnography Of The Myrtles Plantation In St. Francisville, Louisiana With Ruminations On Hauntology, Holley Ann Vaughn

LSU Doctoral Dissertations

This study examines how ghosts perform and are performed in southern Louisiana, particularly in the eclectic Baton Rouge enclave of Spanish Town and at The Myrtles Plantation in St. Francisville. Although The Myrtles, considered “one of the most haunted locations in the United States,” served as the genesis for this project, I explore the continuities and discontinuities of the histories and historicities of these two distinct places and my journeys between them over a five year period. Using critical ethnography as a grounding framework, the study draws from literature in tourism studies, performance studies, and other related areas of research, …

Development Of Eco-Friendly Flame Retardant Fabric Using Phosphorus Based Intumescence Chemistry, Vikas P. Joshi

Master's Theses and Doctoral Dissertations

The research aims at developing Eco-friendly flame retardant textile fabric using phosphorous based intumescence chemistry. Phosphorous in the structure of Spirocyclic pentaerythriol diphosphoryl chloride (SPDPC) acts as the main group to impart flame retardancy. Intermediate compounds were synthesized in the laboratory and finally converted into sol. The silane sol was applied to the textile material using pad-dry-cure method. The intermediate compounds and the coated material were tested using Fourier transform infrared spectroscopy (FTIR), Differential scanning calorimeter (DSC), and Thermogravemetric analysis (TGA) testing instruments. Vertical flammability testing was performed as per ASTM D-6413 standards to test the fabric for its flame …

What Does The ¹⁴C Method For Estimating Photosynthetic Rates In The Ocean Really Measure?, Shaofeng Pei

LSU Doctoral Dissertations

The ¹⁴C method has been used extensively by both limnologists and oceanographers to measure photosynthetic rates in aquatic systems, and the large database of ¹⁴C measurements that now exists is the ground truth with which satellite algorithms for estimating marine photosynthetic rates on a basin and global scale have been calibrated. However, disconcerting uncertainties still remain with respect to whether and under what circumstances the ¹⁴C method provides an estimate of net or gross photosynthesis, or something in between. My study combined batch and continuous culture studies to clarify this ambiguous issue. The batch culture work with …

Habitat Use, Movements, And Ecology Of Female Mottled Ducks On The Gulf Coast Of Louisiana And Texas, Bruce Edward Davis

LSU Doctoral Dissertations

Mottled ducks (Anas fulvigula) are the most abundant breeding waterfowl in the coastal marshes of Louisiana and Texas. Mottled ducks are non-migratory and heavily dependent on coastal marsh habitats; they must satisfy all of their annual resource needs from within the Gulf Coast region. Coastal marsh habitats are being rapidly lost or degraded in Louisiana and Texas. The hydrology of many coastal marsh habitats has been altered by anthropogenic activity and natural factors. Parameters related to Mottled Duck habitat use and movements in this altered environment are poorly understood, and managers need information on vital rates of Mottled Ducks in …

Three Essays On Modeling Economic And Fiscal Change For Communities Under Disequilibrium Following Natural Disasters, Arun Adhikari

LSU Doctoral Dissertations

Regional economists and policy makers are interested in forecasting economic changes that are likely to take place at local and state levels after exogenous shocks to an economy; that is, create disequilibrium conditions in terms of supply and demand. Impacts of such shocks could be observed at the level of employment, unemployment, commuting patterns, assessed property values, property and sales taxes and local level of expenditures in several categories. The objective of the first essay was to model the employment change decompositions of different effects in two major industries using a shift share analysis technique in context of Louisiana parishes …

Communicating While Stimulated: The Effects Of Sensory-Processing Sensitivity On Behavior And Relationships, Christopher Charles Gearhart

LSU Doctoral Dissertations

In light of claims made by Aron (1996, 2000; Aron & Aron, 1997), this dissertation tested the influence of sensory-processing sensitivity on communication via two sets of research questions. First, are highly sensitive persons more easily aroused by stimulation, and if so does this necessarily cause a decrease in affect recognition? Results of an experimental study (N = 342) indicate that highly sensitive persons (HSPs) were more distracted by audio stimulation, causing more errors in accuracy judgments on non-verbal decoding tests, most noticeably for facial expression detection. The implication is that, when aroused by stimulation in their environment, HSPs may …

Projected Performances: The Phenomenology Of Hybrid Theater, David Edward Coley

LSU Doctoral Dissertations

Throughout the 20th century, mediatized forms gained prominence and eclipsed the theater as a site of cultural power and popularity. Because of this tension, performance theorists like Peggy Phelan framed the definition of theater through its inherent differences from film and television. Other theorists like Philip Auslander problematized this distinction, particularly due to television’s similarities to live performance. The cinema, however, has remained an opponent to performance, ignored in favor of technologies that more readily promote a sense of “liveness.” In Projected Performances, I argue that film projection is more closely related to performance than previously thought, particularly when viewed …

Design And Analysis Of Cloaked Fluorophores For Rapid Detection And Visualization Of Cancer Cells Containing Nad(P)H:Quinone Oxidoreductase-1, William Silvers

LSU Doctoral Dissertations

The development of fluorogenic substrates for real-time tumor cell detection has led to a vastly expanding field for personal oncology. Fluorophores have been studied as appendages to larger scaffolds leading to accumulation of these dyes in tumor cells or their surrounding environment, taking advantage of tumor anatomy. A new class of fluorophores has been developed in which the dye is an active participant in the mechanism of cancer cell detection. These dyes have been conjugated such that their fluorescence has been eliminated or altered and will undergo a change to reveal their fluorescent signal upon activation by a mechanism that …

Studies Of A Dirhodium Tetraphosphine Catalyst For Hydroformylation And Aldehyde-Water Shift Catalysis, Aaron Rider Barnum

LSU Doctoral Dissertations

Research into the dirhodium tetraphosphine catalyst precursor [rac-Rh2(nbd)2(et,ph-P4)](BF4)2 shows it is capable of forming a highly active and regioselective hydroformylation catalyst in situ when using an acetone or acetone/water solvent. Hydroformylation experiments (using 1-hexene), FT-IR studies, and acid-base studies were performed to better understand the various complexes of the dirhodium catalyst cycle. These studies lead to the newly proposed catalyst mechanism when performed in an acetone/water solution, using the monocationic [rac-Rh2(H)(µ-CO)2(CO) (et,ph-P4)]+ as the proposed active catalyst complex for hydroformylation. For the conversion of 1-hexene to heptanal, it is capable of performing an initial rate of 30 turnovers per min, …

Error Propagation In Raster Data Integration: Impacts On Landscape Composition And Configuration, Zachary J. Christman, John Rogan

Geography

Integrating raster-based categorical maps from multiple sources necessitates the transformation of geometric characteristics to compare maps, as in land change analyses. By projecting maps to a new geographic reference framework and scaling pixel values to a new size, distortions of map information are introduced that can affect the proportion and arrangement of thematic classes across the landscape. Using a sample land cover dataset depicting a heterogeneous landscape, this paper examines these impacts using three common raster-based transformation methods and introduces a new vector-based method that minimizes error propagation. While relative class area was best preserved by a nearest-neighbor resampling method, …

Systematics, Diversity, And Origins Of Upper Cretaceous Continental Molluscan Fauna In The Infra- And Intertrappean Strata Of The Deccan Plateau, Central India, Marron J. Bingle-Davis

Theses and Dissertations

The Deccan Plateau in western and central India has been a major area of interest for researchers since the 1800s. In 1840, James Sowerby described the molluscan collection sent to him by John Malcolmson. In 1860, Stephen Hislop identified new molluscan species and redescribed based on better preserved material. Although this seminal work was comprehensive, interpretations have changed since the mid 1800s. Species need to be reassigned to current and/or accurate taxa, as well as revalidated statistically. Seventeen character traits were measured on over 600 specimens from five eastern Deccan Plateau localities representing a stratigraphic and temporal sequence. Cluster analysis …

Diagenesis Of The Middle Member Of The Bakken Formation, Williston Basin, North Dakota, Katharine L. Kimber

Theses and Dissertations

The shales of the Bakken Formation have been extensively studied since the discovery of oil, but little attention has been paid to the middle reservoir member. Successfully produced wells are concentrated in multiple fields throughout the Williston Basin, there has been no definitive way to determine a well’s potential productivity. This study used core samples, point counting, and petrography to determine the diagenetic traits common to the Middle Member of the Bakken Formation and their effect on oil production. Cores from forty-one wells were examined. Thin sections were made from sixteen cores, eight producing wells and eight dry wells. All …

Relational Maintenance: An Examination Of How Gender, Relational Maintenance Strategies, And Commitment Affect The Use Of Text Messages In Romantic Relationships, Vashaun M. Baber

Master's Theses and Doctoral Dissertations

This communication study explores the relation between commitment, relational maintenance strategies, and text message use in romantic partners. This study examines how these three factors are connected through the use of surveys. It was hypothesized that romantic partners who were more committed to one another would use text messages to communicate about certain relational maintenance strategies. Results showed romantic partners who used more relational maintenance strategies did in fact use text messages to communicate about these issues more often. Also, couples who were more committed to their partner did use more positivity when communicating through text messages with their partner. …

The Synthesis Of Amphiphilic Diblock Copolymers: An Investigation Into The Formation Of Micelles As A Function Of Hydrophobic Block Length, Kevin S. Kawchak

Master's Theses and Doctoral Dissertations

Acrylate-based amphiphilic diblock copolymers show great potential for anti-cancer drug transport due to their ability to aggregate into protective core-shell micelles. Using RAFT polymerization, copolymers containing poly(acrylic acid) and poly(methyl acrylate) blocks were made with high monomer conversion and narrow distributions of molecular weight for eventual use in medicinal applications. Based on previous findings of copolymers with low weight hydrophobic blocks failing to micellize, it was hypothesized that increasing the poly(methyl acrylate) block length would allow for micelle formation. 1H-NMR experiments conducted in the presence of an aqueous solution yielded diminished and broadened resonances of the lengthened hydrophobic block, which …

Perceptions Regarding The Michigan Merit Curriculum Reform Policy And Its Impact On Cte And Dual Enrollment In A Southeastern Michigan High School, Winifred L. Green

Master's Theses and Doctoral Dissertations

Michigan joined Arkansas, Indiana, Massachusetts, Oregon, and Rhode Island in the high school reform effort. The Michigan Merit Curriculum (MMC), mandated in 2006, contained a new set of statewide graduation requirements. This qualitative case study used focus group interviews to examine the perceptions of students, teachers, parents, and key administrators in a southeastern Michigan high school about the effects of the MMC on students’ performances and outcomes as they relate to Career and Technical Education (CTE) and dual enrollment, and about problems that emerged from the MMC. Five themes emerged from the data: Transparency and Communication for Dual Enrollment, Loss …

An Exploration Of Self-Concept And Life Satisfaction Of Single Women, Stacey Lynn Piatkowski

Master's Theses and Doctoral Dissertations

This communication study explores the relationship between self-concept and life satisfaction of single women and examines, through the use of interviews, how these two factors are connected. This study aims to gain perspective of why women remain single, what pressures single women face, and how a woman’s life satisfaction and self-concept are affected by being single. Results showed that women remain single for a variety of reasons and while women feel pressure from family, friends, and media about their singlehood, the majority of the pressure is internal and indicated that women need a romantic relationship that will eventually lead to …

An Analysis Of University Student Academic Self-Entitlement: Levels Of Entitlement, Academic Year, And Gender, Tiffany Brook Hartman

Master's Theses and Doctoral Dissertations

Academic self-entitlement is a rapidly increasing phenomenon that is becoming a problem in universities today. Self-entitled students expect high grades for minimal effort and tend to be highly demanding; they exhibit strong emotions when outcomes fail to meet their expectations. This type of student behavior increases the burden placed upon unprepared faculty, emphasizes performance goals rather than learning goals, and threatens to place the core values of education at stake. This study investigates whether relationships exist between student gender, year in school, and academic self-entitlement. University students were assessed using the Academic Entitlement Scale (Achacoso, 2002). A two-way MANOVA revealed …

Synthesis And Purification Of Potential Antimicrobial Peptides, Christopher Ryan Snyder

Master's Theses and Doctoral Dissertations

No abstract provided.

Development Techniques For Android Platform Mobile Device Application, Ivan Njunjic

Master's Theses and Doctoral Dissertations

This thesis focuses on Android application development techniques needed to implement a mobile application portal that consists of features used at Eastern Michigan University. Since there is not a single source available to developers that explains such techniques, this thesis represents a unique manual for such development. Based on the similarity of features, mainly in terms of data nature and access, five techniques are defined in a step-by-step procedural manner. This is accomplished by outlining the development techniques and presenting them “in action” with coding examples from a fully developed demo application. As a result, the demo application demonstrates functional …

An Examination Of Psychological Risk Factors For The Development Of Substance Abuse Among Post-Bariatric Surgery Patients, Valentina Ivezaj

Master's Theses and Doctoral Dissertations

Bariatric surgery is a clinically effective tool that commonly results in sustained weight loss changes for the majority of patients. While bariatric surgery is generally associated with a number of positive health outcomes post-operatively, some popular media outlets and clinical anecdotes have presented concerns about the notion of “addiction transfer” and substance abuse post-bariatric surgery. There is a lack of research, however, in this area. The present study examined the rate of substance abuse in a broad sample of postbariatric surgery patients and examined potential risk factors for the development of substance abuse post-surgery. It was hypothesized that documented risk …

The Socialization Of Students At A Midwestern College, Matthew S. Rader

Master's Theses and Doctoral Dissertations

The purpose of the study was to understand and explain the overall culture and subcultures of Prairie College (a pseudonym) and how those cultures socialized students to persist or depart from the institution. In accordance with the higher education student retention theory and research of Braxton (2000), Kuh and Love (2000), and Kuh (2001), there is potential for an institution of higher education to serve and retain greater numbers of students when administrators understand the institutional culture (Morgan, 1996; Mintzberg, 1979; Spindler, 1988) in which they work as well as that of students they serve.

Qualitative research methods were used. …

Assessing The Relationship Between Classroom Interaction And Perceived Student Learning In Videoconferencing Remote Sites: A Social Learning Approach, Kevin M. Hankinson

Master's Theses and Doctoral Dissertations

In distance education via videoconferencing, students at classroom remote sites learn without the physical presence of their teacher and other classmates at the host site. As a result, the learning experience of remote site students differs from host site students. Therefore, instructional leaders should make every effort to minimize the adverse effects of videoconferencing on the learning of remote site students.

This study invited Advanced Placement and International Baccalaureate Diploma Programme remote site students who participated in videoconferencing to share their perspectives on the role of interactions on their learning. Specifically, this study explored the presence and strength of relationships …

Characterization Of Mirco/Nano Mechanical And Tribological Properties Of Polymeric Coatings Deposited On Steel, Dustin Neill

Master's Theses and Doctoral Dissertations

This study aims to characterize the mechanical and tribological properties of three different polymeric coatings—polyurethane, 2K, and melamine—deposited on steel by analyzing the hardness, elastic modulus, and scratch resistance of each coating. This was accomplished by making indentation and scratch tests on each sample with a nano-indenter and analyzing the results with a Scanning Probe Microscope (SPM). Results of indentation tests show that melamine, with a hardness of 0.164 GPa and a modulus of 3.367 GPa, was both the hardest and stiffest of the three coatings, while the 2K coating, with a hardness of .104 GPa and a modulus of …

Beyond "Real Life": Activism And Harassment In The Social Justice Blogosphere, Maryann Kozlowski

Master's Theses and Doctoral Dissertations

This thesis examines harassment that takes place online, specifically on websites that focus on issues of social justice from a feminist perspective. The content I examine is a form of activism in which writers and readers work together to form communities online. I also examine online protests as a form of activism. As a result of these Internet publications and protests, many writers face harassment and degradation as they attempt to express themselves in virtual spaces. This thesis grapples with the extent of the harassment and offers explanations as to why it takes place. I explore these topics from a …

Racial Battle Fatigue, Role Strain, And African-American Faculty At Public Community Colleges, Tamara N. Stevenson

Master's Theses and Doctoral Dissertations

African Americans remain disproportionately underrepresented in the faculty ranks at institutions of higher education in the United States. The faculty role is critical to the quality and exchange of teaching and learning, particularly at public community colleges. The extant literature documents how “chilly” campus climates and racially charged encounters can be harmful to African-American faculty. Moreover, along with the traditional responsibilities and demands of the faculty role, African-American faculty members contend with racism, discrimination, and an anti-Black sentiment in academia as a microcosm of society, likely resulting in race-related role strain. Overall, this exploratory study sought to understand the nature …