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Use Of Copula And Auxiliary Be By African American Children With Gullah/Geechee Heritage, Jessica Richardson Berry
Use Of Copula And Auxiliary Be By African American Children With Gullah/Geechee Heritage, Jessica Richardson Berry
LSU Doctoral Dissertations
The purpose of this study was to document the auxiliary and copula BE system of African American (AA) children with Gullah/Geechee (GG) heritage and to compare the findings to those from African American English (AAE)-speaking children without this heritage and to what has been documented in previous studies of Gullah and AAE. The data came from 38 children, aged five to six years. Nineteen were from rural South Carolina and classified as GG, and 19 were from rural Louisiana and classified as AAE. All were developing language typically, and the groups were matched on a number of socio-demographic variables and …
Single Or Dual Resources: The Role Of Working Memory In Syntactic Processing, Rebecca Ann Horn
Single Or Dual Resources: The Role Of Working Memory In Syntactic Processing, Rebecca Ann Horn
LSU Doctoral Dissertations
Within the field of psycholinguistics there are those who argue for a close relationship between working memory capacity (WMC) and syntactic processing (Just and Carpenter, 1992) and those who argue that there is no such relationship (Waters and Caplan, 1996b; 2004). Despite years of research, empirical data has yet to settle this disagreement, perhaps because a number of methodological differences between studies from each side make direct comparisons of data nearly impossible. The current study was designed to partially replicate three previous studies using their own experimental sentence types in a self-paced word-by-word reading paradigm in order to examine the …
A Science Education Study Using Visual Cognition And Eye Tracking To Explore Medication Selection In The Novice Versus Expert Nurse Anesthetist, Aimee Ladreyt Badeaux
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 …
Large-Scale Geometric Data Decomposition, Processing And Structured Mesh Generation, Wuyi Yu
Large-Scale Geometric Data Decomposition, Processing And Structured Mesh Generation, Wuyi Yu
LSU Doctoral Dissertations
Mesh generation is a fundamental and critical problem in geometric data modeling and processing. In most scientific and engineering tasks that involve numerical computations and simulations on 2D/3D regions or on curved geometric objects, discretizing or approximating the geometric data using a polygonal or polyhedral meshes is always the first step of the procedure. The quality of this tessellation often dictates the subsequent computation accuracy, efficiency, and numerical stability. When compared with unstructured meshes, the structured meshes are favored in many scientific/engineering tasks due to their good properties. However, generating high-quality structured mesh remains challenging, especially for complex or large-scale …
A Conductor’S Analysis Of Almeida Prado’S Passion Of Our Lord Jesus Christ According To Saint Mark, Cléusia Carreira Gonçalves
A Conductor’S Analysis Of Almeida Prado’S Passion Of Our Lord Jesus Christ According To Saint Mark, Cléusia Carreira Gonçalves
LSU Doctoral Dissertations
This study is based on the analysis and performance considerations of the Passion of our Lord Jesus Christ According to Saint Mark by the Brazilian composer Almeida Prado (1943-2010). This passion setting, which comprises mixed choir, actors, organ, harpsichord and timpani, was composed in 1967. The setting of the passion story strictly follows the gospel account, and no other poetic text, reflective chorales or arias were added. Among other factors, this work is unique in that the choir is used to carry the narrative throughout the work. Also, the composer masterfully uses text-painting in the choral and instrumental parts in …
Knots, Skein Theory And Q-Series, Mustafa Hajij
Knots, Skein Theory And Q-Series, Mustafa Hajij
LSU Doctoral Dissertations
The tail of a sequence {P_n(q)} of formal power series in Z[q^{-1}][[q]], if it exists, is the formal power series whose first $n$ coefficients agree up to a common sign with the first n coefficients of P_n. The colored Jones polynomial is link invariant that associates to every link in S^3 a sequence of Laurent polynomials. In the first part of this work we study the tail of the unreduced colored Jones polynomial of alternating links using the colored Kauffman skein relation. This gives a natural extension of a result by Kauffman, Murasugi, and Thistlethwaite regarding the highest and lowest …
Development And Evaluation Of Fiber And Pectin Based Delivery Systems For Delivering Lactobacillus Plantarum , Arranee Chotiko
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 …
Catalysts For The Positional Isomerization Of Internal, Long-Chain Olefins, James Edward Bruno
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 …
Release, Stability And Functionality Of Nanodelivered Hydrophobic (Lutein And Beta-Carotene) And Hydrophilic (Folic Acid) Antioxidants Using Zein Nanoparticles, Thanida Chuacharoen
Release, Stability And Functionality Of Nanodelivered Hydrophobic (Lutein And Beta-Carotene) And Hydrophilic (Folic Acid) Antioxidants Using Zein Nanoparticles, Thanida Chuacharoen
LSU Doctoral Dissertations
Nanodelivery systems enable innovations that can benefit foods and human health on a large scale in the coming years. The instabilities of antioxidants during food processing and during digestion are drawbacks that can be successfully addressed by nanoentrapment. This research provided technical strategies to synthesize zein nanoparticles loaded with hydrophobic/hydrophilic antioxidants, and to study the release profiles and physical stability of nanocarriers and chemical stability of entrapped bioactives under on-shelf and GI conditions. The results supported the potential of zein nanoparticles stabilized by surfactants to improve chemical stability of entrapped lutein, and to slowly release lutein under PBS conditions. Same …
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
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). …
For The Sake Of St. Cecilia: Analysis And Re-Orchestration Of Gerald Finzi's For St. Cecilia, Op. 30, Christopher Brent Rosborough
For The Sake Of St. Cecilia: Analysis And Re-Orchestration Of Gerald Finzi's For St. Cecilia, Op. 30, Christopher Brent Rosborough
LSU Doctoral Dissertations
Gerald Finzi contributed few pieces to the field of choral music, however the works that have been made available are filled with charm and finesse. Similar to the manner of Duparc, his small output encompasses great depth, beauty, and ingenuity. One such work is For St. Cecilia, Op. 30. Hidden behind the veil of the tradition of English musical festivals, Finzi’s St. Cecilia along with other great works became otherwise lost or discarded in the milieu of nineteenth and twentieth century British composition. Uncovering Finzi’s ode, one might find the size of orchestra and chorus a bit daunting. However, in …
On An Effective Submodeling Procedure For Stresses Determined With Finite Element Analysis, Ajay Ashok Kardak
On An Effective Submodeling Procedure For Stresses Determined With Finite Element Analysis, Ajay Ashok Kardak
LSU Doctoral Dissertations
Submodeling can enable stress analysts using finite elements to focus analysis on a subregion containing the stress concentration of interest, with consequent computational savings. Such benefits are only truly realized if the boundary conditions on the edges of the subregion that were originally contained within the global region are sufficiently accurate. These boundary conditions are drawn from initial global finite element analysis (FEA), and consequently themselves have errors that in turn lead to errors in the stresses sought. When these last boundary-condition errors are controlled, and the discretization errors incurred by the FEA of ensuing submodels are also controlled, submodeling …
Insights Into The Development Of Chemotherapeutics Targeting Pfkfb Enzymes, Robert Blake Crochet
Insights Into The Development Of Chemotherapeutics Targeting Pfkfb Enzymes, Robert Blake Crochet
LSU Doctoral Dissertations
The PFKFB enzymes control the primary checkpoint in the glycolytic pathway and are implicated in a multitude of diseases: from cancer, to schizophrenia, to diabetes, and heart disease. The inducible isoform, PFKFB3, is known to be associated with the upregulation of glycolysis in many cancers. The first study within this work investigates the potential for using tier-based approaches of virtual screening to target small molecule kinases, with PFKFB3 serving as a case study. For this investigation, bioactive compounds for PFKFB3 were identified from a compound library of 1364 compounds via high-throughput screening, with bioactive compounds being further characterized as either …
My Choice, My Fraternity, And My Engagement: Experiences Of White Men In Black Greek Letter Organizations (Bglo), Kourtney Prentice Gray
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 …
Healing-On-Demand Polymer Composites Based On Shape Memory Polyurethane Fibers And Polymeric Artificial Muscles, Pengfei Zhang
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 …
Evaluation Of Teacher Ratings To Improve Child Language Screenings In Speech-Language Pathology, Kyomi Dana Gregory
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 …
Biostabilization Of Lipid Bilayers: Dealing With Water Stress In Embryos Of Artemia Franciscana, Daniel Steven Moore
Biostabilization Of Lipid Bilayers: Dealing With Water Stress In Embryos Of Artemia Franciscana, Daniel Steven Moore
LSU Doctoral Dissertations
The aim of this dissertation is to investigate stabilization of lipid bilayers during water stress by protectants found in embryos of Artemia franciscana. Two LEA proteins were used: AfrLEA2 and AfrLEA3m. AfrLEA3m was experimentally demonstrated to reside in the matrix. Two detergents were used to differentially solubilize the outer and inner membranes of mitochondria isolated from A. franciscana. Release of AfrLEA3m occurred simultaneously with the release of fumarase, a matrix-resident marker. As a second independent method to corroborate the above findings, I demonstrated that recombinant AfrLEA3m can be imported into mitochondria isolated from rat liver. Molecular modeling of AfrLEA2 and …
Functional Interplay Between Neurocognitive Decline And Risk Factors In Older Adults: A Multivariate Latent Growth Curve Model Of Risk, Rebecca Kathryn Macaulay
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 …
Biogenesis And Redox Transition Of Iron-Sulfur Clusters In Proteins, Aaron Paul Landry
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 …
Applications Of Geopolymer In Civil Engineering: Feasibility Study Of Loess Stabilization And Waste Concrete Recycling, Zhen Liu
LSU Doctoral Dissertations
The fast growing population and economic development have resulted in an increasing demand for residential and commercial buildings and infrastructures. However, there are problems identified to fulfill this demand, including that (1) problematic soils need to be treated/improved before the construction of building and infrastructures; (2) the Portland cement industry, which is used for concrete production and as the conventional soil stabilizer, is not environment friendly; (3) qualified natural aggregates for concrete production are being depleted; and (4) great amount of construction & demolition waste (C&D waste) is being produced every year. This means that green materials and recycling the …
Excluding Two Minors Of The Petersen Graph, Adam Beau Ferguson
Excluding Two Minors Of The Petersen Graph, Adam Beau Ferguson
LSU Doctoral Dissertations
In this dissertation, we begin with a brief survey of the Petersen graph and its role in graph theory. We will then develop an alternative decomposition to clique sums for 3-connected graphs, called T-sums. This decomposition will be used in Chapter 2 to completely characterize those graphs which have no P_3 minor, where P_3 is a graph with 7 vertices, 12 edges, and is isomorphic to the graph created by contracting three edges of a perfect matching of the Petersen Graph. In Chapter 3, we determine the structure of any large internally 4-connected graph which has no P_2 minor, where …
Physics And Applications Of A Pdms Based Centrifugal Microfluidic System, Ziliang Cai
Physics And Applications Of A Pdms Based Centrifugal Microfluidic System, Ziliang Cai
LSU Doctoral Dissertations
The objective of this research work is to develop a centrifugal microfluidic system for general purposes based on microfabrication technologies including SU-8 photolithography, polydimethylsiloxane (PDMS) casting. The main contribution of this research is to integrate a flyball governor system into the polymer based centrifugal microfluidic platform. A series of function units are developed based on this unique mechanism. In the first part, three pinch valve systems were designed and tested. The first one is based on the magnetic force and the second one is on the basis of spring force and the last one is a membrane valve. All valving …
The Baby And Infant Screen For Children With Autism Traits: A Dsm-5 Update, Matthew Jason Konst
The Baby And Infant Screen For Children With Autism Traits: A Dsm-5 Update, Matthew Jason Konst
LSU Doctoral Dissertations
Interest surrounding the investigation of autism spectrum disorder (ASD) has increased exponentially since it was initially described over a half-century ago. With this passage of time our conceptualization of the ASD diagnosis has undergone multiple changes. An increasing trend in research has been an emphasis on early identification and intervention. This trend has brought about the creation and adaptation of multiple measures designed to inform early ASD diagnosis. Recently, the ASD diagnostic category underwent significant revisions. In response to revisions, it is necessary to adapt preexisting measures to reflect these significant changes in order to maintain diagnostic accuracy. The Baby …
Utilization Of The Alabama Parenting Questionnaire Across Family Structures: Do The Same Constructs Apply?, Leah Michelle Adams
Utilization Of The Alabama Parenting Questionnaire Across Family Structures: Do The Same Constructs Apply?, Leah Michelle Adams
LSU Doctoral Dissertations
America has experienced a marked increase in non-nuclear family structures over the last five decades. The evolution of more diverse family systems has led some researchers to eschew a “one size fits all” approach to parenting assessment, as these measures may neglect or misconstrue parent-child dynamics unique to non-nuclear families. The current study examined the underlying factor structure of the Alabama Parenting Questionnaire (APQ) in two distinct family structures to determine if parenting constructs were replicated across groups. Participants included 246 mothers from single parent and two-parent households in Louisiana. Statistical analyses included exploratory factor analysis, replication analysis, hierarchical regression …
Cryopreservation Of Domestic Cat Epididymal Spermatozoa, Jesse Ray Saenz
Cryopreservation Of Domestic Cat Epididymal Spermatozoa, Jesse Ray Saenz
LSU Doctoral Dissertations
The primary lines of defense in preventing any exotic species from becoming endangered or extinct should be the protection of their habitat and from poaching. For wildlife conservationists, these primary measures are often not feasible, and thus cannot be the only means to prevent extinction. The objective of this research was to identify a semen extender that contained little to no egg yolk and could still effectively freeze domestic cat epididymal spermatozoa, for the purpose to sort spermatozoa into X and Y, using flow cytometry. In the first experiment we compared a TesT (Tes + Tris) 20% egg yolk extender …
Why Interpersonal Ties Are Important For People: An Analysis Of The Concept Of Social Capital And Its Dimensions Of Holism, Convertibility, And Conductibility, Durmus Ali Yuksek
Why Interpersonal Ties Are Important For People: An Analysis Of The Concept Of Social Capital And Its Dimensions Of Holism, Convertibility, And Conductibility, Durmus Ali Yuksek
LSU Doctoral Dissertations
During recent years, social capital has become one of the most widely used concepts in sociological literature, and its popularity has shown itself in both sociological theory and everyday language. Its increasing popularity has mainly resulted from its conceptualizations by some of the most prominent social scientists, such as Pierre Bourdieu, James Coleman, Nan Lin, and Robert Putnam and from its empirical applications to social problems and society afterwards. While many scholars have seen social capital as something of a cure for social problems and perceived social capital theories adequate as they are for their empirical applications, few scholars have …
The Stylistic Variance And Underlying Unity In Selected Organ Works By Clarence Mader, Jacob Richard Benda
The Stylistic Variance And Underlying Unity In Selected Organ Works By Clarence Mader, Jacob Richard Benda
LSU Doctoral Dissertations
Clarence Mader (1904-1971) is not a commonplace name heard within most academic institutions or concert halls at this point in music history. During his lifetime, however, he was regarded as a musician of the highest caliber. His expertise was not limited to a singular musical facet but included several. Mader spent the majority of his professional career in California as organist, composer, teacher and organ consultant. Chapter Two will outline the various influences that shaped Mader as a composer during the 20th century in America, as well as identify the common threads that permeate his music. A former pupil of …
Using Academic And Demographic Characteristics To Determine Whether Or Not Admitted Transfer Students Will Enroll In A Four-Year Research-Extensive University In The Southeastern Region Of The United States, Barrett Palmer Linam
LSU Doctoral Dissertations
Abstract The primary purpose of this study was to determine whether or not selected demographic, academic, and institutional characteristics influence the decision of admitted transfer students to enroll in a research-extensive university in the southeastern region of the United States. The transfer student population is an untapped student population that could help benefit many universities. If these students are targeted like potential freshmen, then universities can increase their enrollment. Being able to identify the correct characteristics for potential transfer students would help conserve resources and maximize the incoming transfer student population. This study used the standards of a research-extensive university …
Principal Motives Of Positive Youth-Adult Relationships: A Model For Identifying The Motives Of Adult Volunteers And Youth-Adult Relationships In Physical Activity-Based Youth Development Programs, Stephanie Marie Goudeau
Principal Motives Of Positive Youth-Adult Relationships: A Model For Identifying The Motives Of Adult Volunteers And Youth-Adult Relationships In Physical Activity-Based Youth Development Programs, Stephanie Marie Goudeau
LSU Doctoral Dissertations
The field of positive youth development has evolved in response to the growing effort to provide youth with safe and healthful activities during leisure time. Physical activity-based youth development programs (PA-based YDPs) utilize a range of individual and team sports and physical activities as tools to simultaneously teach character development and physical skills for the acquisition of life skills. The intentional focus on positive youth development provides a suitable context for the development of a youth-adult relationship (YAR). The bonding between a youth and adult is critical to the development of adaptive responses and life skills which ultimately impact the …
The Erotics Of Race Suicide: The Making Of Whiteness And The Death Drive In The Progressive Era, 1880-1920, Madoka Kishi
The Erotics Of Race Suicide: The Making Of Whiteness And The Death Drive In The Progressive Era, 1880-1920, Madoka Kishi
LSU Doctoral Dissertations
"The Erotics of Race Suicide" examines the frequent representation of suicide in Progressive Era American literature in light of a widely proclaimed socio-political concept of the time: “race suicide.” Coined by the sociologist Edward Ross, the term “race suicide” nominates a nativist fear over the racial enervation of indigenous white Americans. Ross and other commentators on race suicide, most notably Theodore Roosevelt, proclaimed that the diminution of the indigenous white Americans was caused by their unwillingness to breed, signaling the self-destructive, “suicidal” tendency of the race. Consequently, through such means as the enactment of immigration restrictions, the reinforcement of anti-miscegenation …