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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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Fish Assemblage Structure, Distribution, And Trophic Ecology At Northwestern Gulf Of Mexico Banks, Todd Langland Jan 2015

Fish Assemblage Structure, Distribution, And Trophic Ecology At Northwestern Gulf Of Mexico Banks, Todd Langland

LSU Doctoral Dissertations

The northwest Gulf of Mexico (Gulf) shelf-edge banks both provide unique hard bottom habitat and support the northernmost coral reefs on the North American continental shelf in a region that is generally characterized by low relief, soft sediments. The habitat value of many of these banks has led to their designation as Habitat Areas of Particular Concern (HAPC) and the Flower Garden Banks National Marine Sanctuary (FGBNMS). However, little is known about the fisheries resources and dynamics of the banks outside the FGBNMS. This study had three main objectives: 1) define reef fish assemblages at northwestern Gulf shelf-edge banks 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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Gumbos As Matrices For Matrix-Assisted Laser Desorption Ionization Time Of Flight Mass Spectrometry, Hashim Abdullah Al Ghafly Jan 2015

Gumbos As Matrices For Matrix-Assisted Laser Desorption Ionization Time Of Flight Mass Spectrometry, Hashim Abdullah Al Ghafly

LSU Doctoral Dissertations

This work involves the investigation of a group of uniform materials based on organic salts (GUMBOS) as matrices for matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF) for analysis of hydrophobic biomolecules. GUMBOS are new class of materials that show great promise as MALDI matrices because they are able to form a thin-layer on the MS target, thereby enhancing the sample homogeneity, signal intensity, and shot-to-shot reproducibility. The detection of hydrophobic peptides using MALDI-TOF MS remains a challenge because the majority of matrices utilized are hydrophilic thereby exhibiting low affinity for hydrophobic molecules. To address this, I …

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The Agronomic Use And Application Of Canopy Reflectance Within The Visible And Near-Infrared Wavebands And Its Relation With Nitrogen Fertilization In Energy Cane Production In Louisiana, Saoli Chanda Jan 2015

The Agronomic Use And Application Of Canopy Reflectance Within The Visible And Near-Infrared Wavebands And Its Relation With Nitrogen Fertilization In Energy Cane Production In Louisiana, Saoli Chanda

LSU Doctoral Dissertations

Spectral vegetation index-based models that are used to estimate yield potential are commonly developed from the relationship between early-season crop canopy reflectance readings and actual yield obtained at harvest. Plant population stand can influence cane yield potential and nutrient requirement. This study was conducted at LSU AgCenter Sugar Research Station in St. Gabriel, LA to evaluate (1) the relation between estimated early season biomass yield and the spectral vegetation indices acquired at the same time, (2) nitrogen (N) response pattern between early-season biomass production and yield at harvest, and (3) the relationship between coefficient of variation (CV) among normalized difference …

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Pytracks: A Tool For Visualizing Fish Movement Tracks On Different Scales, Ross Fossum Jan 2015

Pytracks: A Tool For Visualizing Fish Movement Tracks On Different Scales, Ross Fossum

LSU Master's Theses

A fundamental problem in conservation biology and fisheries management is the ability to make educated decisions based on the data collected. Fish populations and their spatial distributions need to be represented accurately for conversation efforts and management decisions. Methods such as modeling, surveying, and tracking can all be used to collect data on a particular fishery. To include the movement patterns in conservation and management, one needs to work with and process fish tracking data or data exported from fish movement simulation models. This data can often be difficult to process. This topic is becoming increasingly popular as technology to …

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From With–In The Black Diamond: The Intersections Of Masculinity, Ethnicity, And Identity–An Epistolary Autoethnographic Exploration Into The Lived Experiences Of A Black Male Graduate Student, Vincent Tarrell Harris Jan 2015

From With–In The Black Diamond: The Intersections Of Masculinity, Ethnicity, And Identity–An Epistolary Autoethnographic Exploration Into The Lived Experiences Of A Black Male Graduate Student, Vincent Tarrell Harris

LSU Doctoral Dissertations

From With-In The Black Diamond: (Black Diamond) autoethnographically explores the lived experiences of a Black male who navigates his way through a predominately white higher education institutions while existing within marginalized spaces related to his gender, ethnicity, and identity. Black Diamond uses epistolary writing techniques to explore question research question: 1. How has a Black Gay male graduate student studying Higher Education negotiated his way to and through predominately white higher education institutions? In order to support the answering of this question I will argue that the most influential reasons higher education literature rarely addresses controversial topics related to GLBTQ …

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Paradoxical Agency: The Ethics Of Women's Rhetoric In Shakespeare's Rome, Catherine Riley Godbold Jan 2015

Paradoxical Agency: The Ethics Of Women's Rhetoric In Shakespeare's Rome, Catherine Riley Godbold

LSU Doctoral Dissertations

In this project, I address the problems of ethics and agency for women’s speech in Shakepseare’s Roman plays—Julius Caesar, Antony and Cleopatra, Titus Andronicus, and Coriolanus—and the narrative poem The Rape of Lucrece. Regardless of their rhetorical skill, virtue, or agency, it seems that the Roman women in these works are doomed to fail: either their lives become unlivable or they lose the people most important to them. This prompts the project’s initiating question: why do Shakespeare’s Roman women speak if their words have no long-term effect? For these characters, rhetorical success in Shakespeare’s Rome is dependent upon a particular …

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Single Molecule Electrophoresis And Optical Detection Using Thermoplastic Nanofluidic Devices: An Experimental And Simulation Study, Kumuditha Madushanka Weerakoon Ratnayake Jan 2015

Single Molecule Electrophoresis And Optical Detection Using Thermoplastic Nanofluidic Devices: An Experimental And Simulation Study, Kumuditha Madushanka Weerakoon Ratnayake

LSU Doctoral Dissertations

Nanofludic devices provide a great platform for single molecular analysis. The unique phenomena in nanoscale gained such interest in investigating the single molecular behavior in nanochannels. Sizes less than 200 nm in one or two-dimensional structures have lead to fascinating observations not accessible in microscale. When a single molecule translocates through a nanotube it interacts with channel walls by adsorption/ desorption, van der Waals interactions and hydrophilic interactions providing a mechanism for separation without any extra additives. Moreover, double layer thickness governed by the background electrolyte plays a vital role. We report single molecular electrophoresis phenomena in nanochannels and nanoslits …

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Communicating Sustainability With Visuals: Issue Perception And Issue Engagement, Zeynep Melis Altinay Jan 2015

Communicating Sustainability With Visuals: Issue Perception And Issue Engagement, Zeynep Melis Altinay

LSU Doctoral Dissertations

Today the list of environmental disasters threatening lives and natural resources has expanded to include many causes. Even though sustainable solutions have never been so urgent, public still issues low priority to many of these serious threats. Many impacts of environmental deprivation, such as coastal land loss, are invisible to the untrained eye, causing individuals to distance themselves psychologically from the risks. The slow pace of environmental degradation constitutes one of the biggest challenges in sustainability communication. The success of sustainable development will require the public to undergo a significant shift in thinking about environmental issues. This dissertation systemically investigates …

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Stimulation Of Escherichia Coli Dna Damage Inducible Dna Helicase Ding By The Single-Stranded Dna Binding Protein Ssb, Zishuo Cheng Jan 2015

Stimulation Of Escherichia Coli Dna Damage Inducible Dna Helicase Ding By The Single-Stranded Dna Binding Protein Ssb, Zishuo Cheng

LSU Doctoral Dissertations

We investigate the regulation of an E.coli iron-sulfur protein DNA damage inducible DNA helicase (DinG) by single-stranded DNA binding protein (SSB). We find that SSB can form a stable protein complex with DinG and stimulate the DinG DNA helicase activity. On the other hand, SSB mutant that retains the single-stranded DNA binding activity but fails to form a protein complex with DinG becomes a potent inhibitor for the DinG DNA helicase. The results indicate SSB stimulates the DinG DNA helicase activity via direct protein-protein interaction. The results from these studies suggest that iron-sulfur proteins are regulated not only by intracellular …

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Integrated Sustainability And Resiliency Assessment Methodology For The Design Of Single-Family Residential Structures Subject To Wind And Flood Hazards, Elizabeth Chisolm Matthews Jan 2015

Integrated Sustainability And Resiliency Assessment Methodology For The Design Of Single-Family Residential Structures Subject To Wind And Flood Hazards, Elizabeth Chisolm Matthews

LSU Doctoral Dissertations

Sustainability and resiliency have become important in shaping the criteria in performance-based design objectives in the recent past and will continue to shape future design as climate change impacts and disasters become more prevalent. While much work has been carried out in developing tools to aid in sustainable and resilient performance-based design there is still much work to be done. It is evident that while sustainability and resiliency have mutual advantages there are also inherent conflicts between the two design approaches. Some of the conflict relates to the robustness required of resilient design, which may have higher environmental impacts than …

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Effects Of Traditional Versus Electronic Note Taking In A High School Biology Classroom, Chelsea Ann Duhon Jan 2015

Effects Of Traditional Versus Electronic Note Taking In A High School Biology Classroom, Chelsea Ann Duhon

LSU Master's Theses

This study investigated the effect of traditional and electronic note taking on student achievement and engagement in a Louisiana high school biology classroom. Over a 20-week period, traditional students (n= 58) took notes using pencil and paper and electronic note takers (n=46) used their laptop computers. Each group of students was given identical pre and posttests covering three units and a practice End of Course exam. Normalized learning gains were compared for each unit and suggest there is no significant difference in academic achievement between the traditional note takers and the electronic note takers. An attitudinal survey was also administered …

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Insights Into Chlorinated Aliphatic Alkane Reductive Dehalogenation By Dehalogenimonas Lykanthroporepellens Bl-Dc-9t And Development Of Nucleic Acid-Based Techniques For Monitoring Gene Expression, Kalpataru Mukherjee Jan 2015

Insights Into Chlorinated Aliphatic Alkane Reductive Dehalogenation By Dehalogenimonas Lykanthroporepellens Bl-Dc-9t And Development Of Nucleic Acid-Based Techniques For Monitoring Gene Expression, Kalpataru Mukherjee

LSU Doctoral Dissertations

Dehalogenimonas lykanthroporepellens BL-DC-9T is an anaerobic bacterial strain that can reductively dehalogenate a variety of vicinally chlorinated alkanes. Making use of the strain’s genome sequence, PCR primers were designed to uniquely target each of the 25 reductive dehalogenase homologous (rdhA) genes present in the genome. RNA extracted from D. lykanthroporepellens BL-DC-9T cultures that were dechlorinating three chlorinated solvents (1,2-dichloroethane, 1,2-dichloropropane and 1,2,3-trichloropropane) were used in reverse transcriptase PCR (RT-PCR) to determine rdhA gene expression patterns. Transcripts from 19 rdhA genes were detected in the RT-PCR experiments, with identical gene expression patterns during growth with all three chlorinated electron acceptors employed …

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Evaluation Of Ammonia, Greenhouse Gas Emissions And Characterization Of Different Particulate Matter During Sugarcane Production In Southern Louisiana, Sanku Dattamudi Jan 2015

Evaluation Of Ammonia, Greenhouse Gas Emissions And Characterization Of Different Particulate Matter During Sugarcane Production In Southern Louisiana, Sanku Dattamudi

LSU Doctoral Dissertations

Application of N fertilizers and special land management practices during agricultural production could have significant implication in influencing the air quality. In this study, field experiments were established at different research sites in Louisiana to evaluate the emission of ammonia (NH3), greenhouse gases (GHG), and fine particulates from sugarcane cultivation and harvesting. Specifically, this study was planned to (i) evaluate the effect of different N sources (urea and urea ammonium nitrate) and residue management schemes (residue burned, RB; and residue retained, RR) on NH3 and GHG emissions, (ii) characterize the chemical and morphological characteristics of fine particles generated during sugarcane …

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Synthetic Methods Development Towards The Total Synthesis Of Chlorosulfolipids, Andres Villalpando Jan 2015

Synthetic Methods Development Towards The Total Synthesis Of Chlorosulfolipids, Andres Villalpando

LSU Doctoral Dissertations

The focus of this dissertation is the development of a novel chlorination reaction utilizing a triphosgene-amine based mixture towards the total synthesis of chlorosulfolipids, a subclass of naturally occurring organohalogen natural products. This novel, mild chlorination reaction will be utilized under a global chlorination strategy to chlorinate multiple alcohol substituents in one synthetic operation. Chapter one details the history of chlorosulfolipids from the early stages of their isolation, relevant structural elucidation techniques, appropriate biosynthetic discoveries, and their biological relevance to a thorough investigation of the total syntheses completed to date. These compounds demonstrate a range of biological activities and have …

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On The Development Of Analytical Methodologies To Interrogate The Lipid Dynamics And Phase Transition Resulting From The Reduction Of Stimuli-Responsive Vesicles, James Edward Winter Jan 2015

On The Development Of Analytical Methodologies To Interrogate The Lipid Dynamics And Phase Transition Resulting From The Reduction Of Stimuli-Responsive Vesicles, James Edward Winter

LSU Doctoral Dissertations

The potential is great for liposome drug delivery systems that provide specific contents release at diseased tissue sites upon activation by upregulated enzymes; however, this potential will only come to fruition with mechanistic knowledge of the contents release process. NAD(P)H:quinone oxidoreductase type 1 (NQO1) is a target for reductively-responsive liposomes, as it is an enzyme upregulated in numerous cancer tissues and is capable of reducing quinone propionic acid (QPA) trigger groups to hydroquinones that self-cleave from dioleolylphosphatidylethanolamine (DOPE) liposome surfaces, thereby initiating contents release. This research targets the development of analytical methodologies to observe and characterize the dynamics and resulting …

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Theatre Safety In Louisiana Secondary Schools: A Survey Study, Christopher Pyfrom Jan 2015

Theatre Safety In Louisiana Secondary Schools: A Survey Study, Christopher Pyfrom

LSU Master's Theses

Participation in secondary school theatre can have many benefits including the development of improved reading comprehension, self-concept, and empathy. In the world of professional theatre, each design area has its own department head and several levels of assistants and workers below them. Yet in the world of secondary school theatre, we expect one person to assume all of those roles in addition to the regular responsibilities of teaching. Not many people see theatre as being dangerous when compared to sports, science labs, or vocational education. However, it can contain many of the same risks. This study investigated several factors that …

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Antisense Regulation And Tissue-Specific Roles Of Peg3 In Lactation And Maternal Care, Wesley D. Frey Jan 2015

Antisense Regulation And Tissue-Specific Roles Of Peg3 In Lactation And Maternal Care, Wesley D. Frey

LSU Doctoral Dissertations

Genomic imprinting is characterized by the restrictive expression of a gene from one of the two inherited parental alleles. Many of these genes have been implicated in neonatal growth and mammalian reproduction. The two studies discussed in this dissertation focus on the tissue-specific contributions of Paternally Expressed Gene 3 (Peg3) on lactation and maternal care as well as the regulation of this gene through an antisense RNA (APeg3). In the first study, a conditional knockout allele has been developed to further characterize these known functions of Peg3 in a tissue-specific manner. The mutant line was first crossed with germline Cre, …

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Gender Euphoria: Photography, Fashion, And Gender Nonconformity In The East Village, Alicia Diane Ridout Jan 2015

Gender Euphoria: Photography, Fashion, And Gender Nonconformity In The East Village, Alicia Diane Ridout

LSU Master's Theses

This thesis investigates the link between art and fashion photography in the work of Peter Hujar and Nan Goldin, both of whom commented on the nature of gender identity. There is an extensive body of fashion-inspired images by both of these East Village photographers that falls into this category. The pictures they produced of gender-nonconforming individuals serve to comment on the restrictive nature of gender identities represented in fashion photography, and also to elevate the status of those pictured to that of fashion models. The unique cultural context of the East Village served as the perfect location for both photographers …

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Public Perception Of Male Athletes Vs. Female Athletes In The Media, Kaleigh Elizabeth Dickson Jan 2015

Public Perception Of Male Athletes Vs. Female Athletes In The Media, Kaleigh Elizabeth Dickson

LSU Master's Theses

In this experiment, my goal was to determine if public perception of female athletes differed from public perception of male athletes. Female athletes are underrepresented in the media (Eastman and Billings, 2000), and because of this, public perception of male athletes might differ from their perceptions of female athletes in the media. I hypothesized that my respondents would best remember the female athletes appearance, best remember the male athletes interview content and that the female and male respondents who took my experiment would evaluate each athlete differently based on their own gender and the athletes’ gender. My results indicated that …

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Thermo-Catalytic Upgrading Of Pyrolysis Vapors Using Electromagnetic Heating, Pranjali Devidas Muley Jan 2015

Thermo-Catalytic Upgrading Of Pyrolysis Vapors Using Electromagnetic Heating, Pranjali Devidas Muley

LSU Doctoral Dissertations

Electromagnetic heating offers several advantages such as rapid heating rates, accurate temperature control and energy efficiency over conventional reactors. The goal of this study was to design an effective and energy efficient catalytic reactor for pyrolysis vapor upgrading. An induction based catalytic reactor was designed for upgrading of pyrolysis vapors. The effect of catalyst bed temperatures (290°, 330° and 370°C) and biomass to catalyst ratios of 1, 1.5 and 2 was studied. The results were compared to conventional heating reactor. Induction heating reactor performance exceeded that of conventional heater. The biomass to catalyst ratio of 2 in combination with the …

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The Effects Of Post-Exercise Consumption Of A Kefir Beverage On Performance And Recovery During Intensive Endurance Training, Keely Virginia O'Brien Jan 2015

The Effects Of Post-Exercise Consumption Of A Kefir Beverage On Performance And Recovery During Intensive Endurance Training, Keely Virginia O'Brien

LSU Doctoral Dissertations

This study was designed to determine whether kefir accentuates the positive health benefits assessed by measures in fitness and/or body composition, as a measure of cardiovascular disease risk as well as the biomarker c-reactive protein. Sixty-seven adult males and females aged 18-35 years were assigned to one of four groups: 1) endurance training + control beverage, 2) endurance training + kefir beverage, 3) active control + control beverage or 4) active control + kefir beverage. The exercise groups completed 15 weeks of structured endurance training while the active control groups maintained their usual exercise routine. Baseline physiological and exercise measurements …

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Planktonic Influence On The Toxicity Of Hewafs (High-Energy Water Attenuated Fractions), Erin Elizabeth Saal Jan 2015

Planktonic Influence On The Toxicity Of Hewafs (High-Energy Water Attenuated Fractions), Erin Elizabeth Saal

LSU Master's Theses

The Deep Water Horizon oilrig explosion led to the release of 6.8 ± 1.7 x 108 kg or 4.9 million barrels of petroleum hydrocarbons into the Gulf of Mexico. The spill persisted from the end of April to mid July 2010 affecting a significant portion of the Gulf coast. The effects of this spill are being studied in labs across the country, and this thesis investigated high-energy water accommodated fractions (HEWAFs) as a potential tool for use in this effort. Water accommodated fractions (WAFs) are mediums containing only the fraction of petroleum that remains in aqueous phase after a mixing …

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Toll-Like Receptor 4 (Tlr4) In Acute And Chronic Renal Diseases, Anand R. Nair Jan 2015

Toll-Like Receptor 4 (Tlr4) In Acute And Chronic Renal Diseases, Anand R. Nair

LSU Doctoral Dissertations

Despite advances in its treatment, the incidence of renal diseases has been consistently increasing. Hence, there is a need to understand the underlying molecular mechanisms of the progression of kidney diseases. Recent research implicates inflammation as an important mediator of renal injury. We hypothesized that inhibiting Toll-like receptor 4 (TLR4), an upstream modulator of several inflammatory pathways, would prevent the progression of renal diseases. First, we determined the mechanism by which AngiotensinII (AngII)-induced inflammation is modulated by TLR4 using an in vitro model of rat tubulo-epithelial cells. We blocked TLR4 using gene silencing strategy in NRK52E cells. In TLR4-silenced cells, …

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Clinical Probe Utilizing Surface-Enhanced Raman Scattering (Sers) For In-Situ Molecular Imaging Applications, Jeonghwan Kim Jan 2015

Clinical Probe Utilizing Surface-Enhanced Raman Scattering (Sers) For In-Situ Molecular Imaging Applications, Jeonghwan Kim

LSU Doctoral Dissertations

In this research, a clinical probe utilizing Surface-Enhanced Raman Scattering (SERS) is developed for molecular imaging application which is a visualizing technology to support early diagnosis by providing images in molecular level. In addition to other molecular imaging applications using magnetic resonance, light, and ultrasound, Raman spectroscopy has great potential in terms of non-invasiveness, safety, imaging agent-free, and scanning multiple molecules at a time. However, the critical limitation of Raman spectroscopy using in-vivo molecular imaging application is the inherent low sensitivity of Raman effect. The challenge is overcome by employing SERS enhancing Raman scattering with concentrated electromagnetic oscillation in nanometallic …

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The Role Of Herpes Simplex Virus Type 1 Glycoprotein K In Neuroinvasion And Immunopathogenesis Of Herpes Keratitis, Ahmad Saied Jan 2015

The Role Of Herpes Simplex Virus Type 1 Glycoprotein K In Neuroinvasion And Immunopathogenesis Of Herpes Keratitis, Ahmad Saied

LSU Doctoral Dissertations

ABSTRACT Herpes simplex virus type 1 is a common neurotropic pathogen responsible for a multitude of human diseases ranging from mucocutaneous lesions, keratitis to life-threatening encephalitis. The hallmark of the HSV-1 life cycle is infection of sensory neurons, where the virus establishes a latent infection for the life of the host. Viral envelope glycoproteins play important roles in viral life cycle and virus-host interaction. Viral glycoproteins gK, gM, gE and the membrane protein UL11 have been shown to be important for virus assembly, egress and virus spread. To investigate the relative importance of each of gK, gM, gE and UL11 …

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Habitat Preferences Of Adult Spotted Seatrout, Cynoscion Nebulosus, In Lake Pontchartrain, Louisiana, Noelle Marie Bramer Jan 2015

Habitat Preferences Of Adult Spotted Seatrout, Cynoscion Nebulosus, In Lake Pontchartrain, Louisiana, Noelle Marie Bramer

LSU Master's Theses

Spotted seatrout (Cynoscion nebulosus) are a highly sought after sportfish, making up over 90% of the recreational fishery in Louisiana. As a significant portion of every life history stage is spent within its natal estuary, it is an ideal bio-indicator of estuarine health. As one of the largest estuaries in Louisiana, Lake Pontchartrain represents one such supporting ecosystem. From November 2012 to April 2014 acoustic tagging of individual fish, a lake-wide receiver array, and ArcGIS mapping software were utilized to determine the spatial distribution of spotted seatrout within the lake. Receivers were placed in representative locations including man-made and natural …

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Genetics Of Resistance To Aflatoxin Accumulation In Corn (Zea Mays), Ramesh Dhakal Jan 2015

Genetics Of Resistance To Aflatoxin Accumulation In Corn (Zea Mays), Ramesh Dhakal

LSU Doctoral Dissertations

Aflatoxin accumulation in corn continues to be a major problem in all southeastern corn growing states. Development of resistant inbreds and hybrids is a sustainable approach to reduce aflatoxin contamination. Mapping of quantitative trait loci (QTL) for resistance to Aspergillus flavus infection and aflatoxin accumulation in maize and developing markers associated with them can be helpful to speed up the breeding program. An F2:3 mapping population developed from the cross between Mp715 and B73 and a genetic linkage map was constructed using 136 simple sequence repeat (SSR) markers spanning the whole genome. QTL for aflatoxin resistance were identified in both …

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Insights From Complexity: A Study Of The Implementation Of A District-Wide Literacy Initiative Through The Lens Of Complex Systems Theory, Mary Kathryn Hudson Jan 2015

Insights From Complexity: A Study Of The Implementation Of A District-Wide Literacy Initiative Through The Lens Of Complex Systems Theory, Mary Kathryn Hudson

LSU Doctoral Dissertations

Complexity Theory provides unique insights into the implementation and operations of a district literacy initiative. The successful and unsuccessful structures of the literacy initiative are examined through a complexity lens in order to gain insight into the relationships between elements of a complex system and its processes operating within a “top-down” educational directive and the resulting “bottom-up” resistance. This qualitative study uses a phenomenological approach to advance complex systems theory. This allows a multi-dimensional exploration of the fundamental attributes of the district initiative, its processes and the relationships within those processes. The literacy initiative in a large urban school district …

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