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Impact Of Insecticides On Predators Of The Soybean Looper, Pseudoplusia Includens (Walker)., Michael Lynn Boyd
Impact Of Insecticides On Predators Of The Soybean Looper, Pseudoplusia Includens (Walker)., Michael Lynn Boyd
LSU Historical Dissertations and Theses
Insecticide toxicity to hemipteran predators (i.e. Geocoris punctipes (Say), Nabis capsiformis Germar, Nabis roseipennis Reuter, and Podisus maculiventris (Say)) was evaluated using three different routes of insecticide exposure (direct contact, indirect insecticide toxicity through consumption of treated prey, and residue uptake). Pirate 3SC$\sp\circler$ (chlorfenapyr) had direct contact toxicity equal to Ambush 2E$\sp\circler$ (permethrin) and Methyl Parathion 4E$\sp\circler$ to most hemipteran predators tested. Exposure to foliage treated with Proclaim 0.16E$\sp\circler$ (emamectin benzoate) usually resulted in lower mortality as compared to Pirate. Condor OF 100F$\sp\circler$ (Bacillus thuringiensis) had the lowest contact toxicity to hemipteran predators of all insecticides tested. Pirate at 0.224 …
The Effects Of Analyst Following On Market Response To Bank Loan Announcements., Joan Marie Brumm
The Effects Of Analyst Following On Market Response To Bank Loan Announcements., Joan Marie Brumm
LSU Historical Dissertations and Theses
A number of theories have been developed that attempt to explain the role of bank loans and public debt in corporate financing. Research suggests that banks may have a comparative advantage in performing at least two valuable functions, information gathering and monitoring. The primary responsibility of analysts is also to gather and disseminate information on firms. However, it is not known how analysts following affects market response to bank loan announcements. The purpose of this study was to (1) determine whether financial analyst following affects market response to bank loan announcements; and (2) to determine whether firms receiving bank loans …
Honduras' Transisthmian Corridor: An Historical Geography Of Roadbuilding In Colonial Central America., Scott Arlen Brady
Honduras' Transisthmian Corridor: An Historical Geography Of Roadbuilding In Colonial Central America., Scott Arlen Brady
LSU Historical Dissertations and Theses
Historical route geographers consider the factors that influenced past roadbuilding, and the changes that result from roadbuilding. The earliest Spanish colonial officials in Central America initiated roadbuilding projects that were sensitive to physical and cultural factors. Officials had to consider the region's aboriginal routes, Spain's trade flows, the isthmus' topography, and the region's population distribution. The roads the Spaniards opened four centuries ago guided early settlement. In some cases, these early roads persist in the region's route network. During the 16th-century Spaniards sought to establish transisthmian roadways that would link Spain's Atlantic and Pacific maritime networks. Partial fluvial routes across …
Automatic Data And Computation Mapping For Distributed-Memory Machines., Isidoro Couvertier-Reyes
Automatic Data And Computation Mapping For Distributed-Memory Machines., Isidoro Couvertier-Reyes
LSU Historical Dissertations and Theses
Distributed memory parallel computers offer enormous computation power, scalability and flexibility. However, these machines are difficult to program and this limits their widespread use. An important characteristic of these machines is the difference in the access time for data in local versus non-local memory; non-local memory accesses are much slower than local memory accesses. This is also a characteristic of shared memory machines but to a less degree. Therefore it is essential that as far as possible, the data that needs to be accessed by a processor during the execution of the computation assigned to it reside in its local …
Cloning, Sequencing And Regulation Of The Rhodobacter Capsulatusheme Gene., Georgia Ineichen
Cloning, Sequencing And Regulation Of The Rhodobacter Capsulatusheme Gene., Georgia Ineichen
LSU Historical Dissertations and Theses
In Rhodobacter capsulatus, a purple nonsulfur bacterium, the tetrapyrrole pathway yields four end products: siroheme, vitamin B12, heme and bacteriochlorophyll. Growth of R. capsulatus under low oxygen tension increases carbon flow through the tetrapyrrole pathway up to 100 fold. The mechanism(s) for this regulation is currently unknown. One regulatory mechanism could be transcriptional control of one or more of the genes in the common portion of the tetrapyrrole pathway. The fifth gene in the pathway, hemE, has been cloned by complementation of an Escherichia coli hemE::miniTn10 mutant. Sequence data of hemE revealed the presence of an upstream palindrome that is …
Importance Of A Siderophore In The Pathogenesis And Virulence Of Photobacterium Damsela Subsp. Piscicida In Hybrid Striped Bass (Morone Saxatili X Morone Chrysops)., John Phillip Hawke
Importance Of A Siderophore In The Pathogenesis And Virulence Of Photobacterium Damsela Subsp. Piscicida In Hybrid Striped Bass (Morone Saxatili X Morone Chrysops)., John Phillip Hawke
LSU Historical Dissertations and Theses
Photobacterium damsela subsp. piscicida, formerly Pasteurella piscicida, is an important new pathogen of hybrid striped bass cultured in brackish water on Louisiana mariculture farms. Louisiana isolates compared with strains of P. damsela subsp. piscicida from Greece, Japan, Israel and Chesapeake Bay, USA and were found to be identical in biochemical phenotype and enzymic activity. Small plasmids of 8 and 5 kb were unique to Louisiana strains. Sequential daily bacteriology and histopathology on hybrid striped bass experimentally infected by immersion revealed that following high doses (13,000 CFU/ml) the gills and spleen are colonized first as early as 24 hours PI, followed …
The "Sacred Harp" In The Urban North: 1970-1995., Mark David Johnson
The "Sacred Harp" In The Urban North: 1970-1995., Mark David Johnson
LSU Historical Dissertations and Theses
In 1994 the Sacred Harp, a southern, shape-note tunebook, entered its 150th year of continuous use. First compiled in 1844 by B. F. White and E. J. King, and updated numerous times, The Sacred Harp books in the "Denson" tradition, including The Sacred Harp: 1991 Edition, are today the most popular and widely used twentieth-century revisions of any nineteenth-century tunebook. Sacred Harp singing has been a largely rural, Southern tradition and in the years between 1844 and the early 1970s several hundred separate singings were founded, many of which continue to be active. In the early 1990s the Sacred Harp …
A Hierarchical Approach To Equilibrium Cycle Nuclear Fuel Analysis., Jon Juneau
A Hierarchical Approach To Equilibrium Cycle Nuclear Fuel Analysis., Jon Juneau
LSU Historical Dissertations and Theses
This research involved developing an expert system that allows a nuclear fuel engineer to quickly provide answers to strategic nuclear fuel management questions, which are typically broad based. Current nuclear fuel analysis research concentrates on getting more accurate and precise answers at the expense of using large computer programs to get answers that are too specific to answer the broad based questions. The expert system brings together several artificial intelligence techniques to allow a nuclear fuel engineer to consider several scenarios in a general way in order to quickly answer the fuel management questions asked. The expert system is based …
School Social Climate And Individual Student Achievement In Rural High Schools., Leslie Faye Jones
School Social Climate And Individual Student Achievement In Rural High Schools., Leslie Faye Jones
LSU Historical Dissertations and Theses
This study examined the relationship of individual student achievement with four variables--school social climate, race, gender, and socioeconomic status. Each of these variables was expected to be significantly related to student achievement. Student achievement was measured by the LEAP sores (averages of mathematics, language arts, and writing components of the test). School social climate was measured by the Brookover (1969) school social climate questionnaire. Researchers have searched for years for an explanation of the differences in student achievement levels. The differences in student achievement levels were noted as early as the 1800's, and many studies have been done linking various …
Amorphization And Fracture In Silicon Selenium(2) Nanowires: Molecular-Dynamics Simulations On Parallel Computer Architectures., Wei Li
LSU Historical Dissertations and Theses
The primary goal of this dissertation is to investigate the structural and mechanical properties and dynamical fracture in SiSe$\sb2$ nanowires using the molecular-dynamics (MD) simulation technique. The present work is the first study of SiSe$\sb2$ nanowires. Large-scale simulations reported in this thesis are carried out with parallel multiresolution schemes for the long-range Coulomb and the three-body covalent potentials. The multiresolution scheme reduces the computational complexity from O(N$\sp2$) to O(N). Using an effective interatomic potential containing both 2- and 3-body interactions, MD simulations are performed for SiSe$\sb2$ nanowires composed of finite (1-64) number of chains. Under small uniaxial strain, the nanowires …
Experimental Lymphatic Filariasis In Gerbils (Meriones Unguiculatus): Molecular Cloning And Expression Of Gerbil Cytokines And Measurement Of Cytokine Gene Expression During A Primary Infection Of Brugia Pahangi., Zhiming Mai
LSU Historical Dissertations and Theses
Cytokines play an important role in regulation of T cell responses. Two T helper cell subsets have been identified in some species and are defined by their cytokine secretion profiles. Th1 cells produce IL-2 and IFN-$\gamma,$ whereas Th2 cells express IL-4, IL-5, and IL-10. Precursor T cells that express a mixture of these cytokines are considered Th0 cells. It is hypothesized that primary infections of Brugia pahangi in gerbils induce an initial Th0 or Th1 like response which with time becomes a Th2 like response. To test this dynamic parasitism induced shift in cytokine profile, it is necessary to measure …
Inflammatory Responses Of The Jird To Brugia Pahangi: Parasite Stage Specificity And Role Of The Macrophage., Carmen Nasarre
Inflammatory Responses Of The Jird To Brugia Pahangi: Parasite Stage Specificity And Role Of The Macrophage., Carmen Nasarre
LSU Historical Dissertations and Theses
The host systemic and peritoneal inflammatory responses against different stages of Brugia pahangi were compared in intraperitoneally infected-jirds. Systemic inflammatory responses were assessed by measuring the pulmonary granulomatous response to B. pahangi antigen-coated beads (PGRN). Peritoneal inflammation was characterized by enumeration of different cell types in peritoneal exudates following infection. Further, the toxoplasmacidal activity and TNF-$\alpha$-like production of peritoneal macrophages were also characterized. Infection with L3, L4, male worms, female worms, microfilariae (MF) or dead adult worms induced a rapid PGRN. This response decreased to levels of controls in jirds inoculated with living parasites at the chronic time period, indicating …
Discontinuous Technological Change And Institutional Legitimacy: A Morphological Perspective., Robert Nicholas Mcgrath
Discontinuous Technological Change And Institutional Legitimacy: A Morphological Perspective., Robert Nicholas Mcgrath
LSU Historical Dissertations and Theses
Technological innovation is an important consideration to many strategic managers and thus is important to research in Strategic Management. Deepening the field's understanding of what technology is and how it works can be facilitated by participating in a growing dialogue between the Strategic Management and Management of Technology communities. This dissertation considers elements of both fields and examines the premise that at the industry level, incumbents act to manipulate the "share of mind" or "cognitive legitimacy" of the performance and cost/price characteristics of product-technology innovations that, in aggregate, portend to either enhance or destroy prevailing industry competences. A forecasting technique …
An Introduction To The Songs Of Miriam Gideon (B. 1906)., W. Loraine Sims
An Introduction To The Songs Of Miriam Gideon (B. 1906)., W. Loraine Sims
LSU Historical Dissertations and Theses
American composer Miriam Gideon (b. 1906) has earned a place as a prominent exponent of American art song through her contribution of high quality works for the genre. This study deals with ten songs chosen to represent her piano/vocal solo songs which span her compositional life from 1937-1987. Individual studies of each song have been approached from a performer's vantage point, as prepared for a Lecture/Recital. The songs are: Lockung (1937), Vergiftet sind meine Lieder (1937), She Weeps Over Rahoon (1939), Gone in Good Sooth You Are (SONNETS FROM "FATAL INTERVIEW, 1952), Epitaph for a Wag in Mauchline (EPITAPHS FROM …
A School For Utopia: Marietta Johnson And The Organic Idea., Janet Ruie Mcgrath
A School For Utopia: Marietta Johnson And The Organic Idea., Janet Ruie Mcgrath
LSU Historical Dissertations and Theses
This history, written from a feminist perspective, uses historical materials which trace unusual social and educational experiments in Fairhope, Alabama, in the early twentieth century. The early development of the utopian Fairhope community, founded by E. B. Gaston and a group of like-minded midwestern social reformers, is reviewed. Gaston's resolve to alleviate the worst inequities of monopolistic capitalism through practicing the single tax principles of Henry George is placed in historical context. Both the social experiment and its ideologically complementary Organic School are situated within the period known as the progressive era which followed closely upon the industrial revolution. The …
Effect Of Diet On Respiratory Fuel Mixture, Insulin Sensitivity, And Autonomic Nervous System Function., Heli J. Roy
Effect Of Diet On Respiratory Fuel Mixture, Insulin Sensitivity, And Autonomic Nervous System Function., Heli J. Roy
LSU Historical Dissertations and Theses
Introduction. A high amount of dietary fat has been shown to have a negative effect on metabolism, causing insulin resistance, weight gain, and other metabolic alterations. Several studies have found a direct link between lack of activity and obesity. Purpose. The purpose of this study was to see if a diet had an effects on insulin sensitivity, autonomic nervous system function, and substrate utilization as predicted by Flatt, in healthy young men. Subjects. The subjects studied were 6 nonathletes (NA), 6 aerobically trained (AT), and 5 weight trained (WT) men. Their body mass index (BMI) was 22.1 $\pm$ 2.92 kg/m$\sp2$ …
Groundwater Flow With Heat And Solute Transport In Sedimentary Basins., Guichang Lin
Groundwater Flow With Heat And Solute Transport In Sedimentary Basins., Guichang Lin
LSU Historical Dissertations and Theses
Numerical experiments were undertaken to understand (1) heat and fluid transport in an uplifted foreland basin where fluid flow is driven by topographic gradient, and (2) effects of expulsion of geopressured fluids on the thermodynamic system in salt basins. Thermal evolution of an uplifted foreland basin is strongly affected by thermal buffering of basement rocks. Thermal buffering by basement rocks does not permit constant heat flow along the sediment-basement contact, in contrast to many previous numerical studies. Ignoring basement effects can result in serious errors in temperature prediction, such as a false transient thermal pulse in the discharge area. Carbonaceous …
Image Analysis Quantification Of Decondensation Of Bovine Spermatozoa And Pcr Amplification Of A Y Chromosome Specific Sequence., Hilde Christina Steinholt
Image Analysis Quantification Of Decondensation Of Bovine Spermatozoa And Pcr Amplification Of A Y Chromosome Specific Sequence., Hilde Christina Steinholt
LSU Historical Dissertations and Theses
The first objective of this research was to develop a decondensation treatment for bovine spermatozoal DNA that worked consistently across bulls and breeds. The second objective was to use the decondensed DNA for polymerase chain reaction analysis of levels of Y-bearing spermatozoa in different ejaculates and in sex sorted spermatozoa. Decondensation of spermatozoa with dithiothreitol and potassium hydroxide was compatible with in vitro amplification and did not inhibit amplification. The polymerase chain reaction and image analysis were used to differentiate between proportions of Y spermatozoa by measuring fluorescent intensities of electrophoresed, polymerase chain reaction-amplified DNA. There were differences in intensities …
Modeling Physical And Chemical Nonequilibrium Transport Of Herbicide In Soils From Different Tillage Systems., Shikui Xue
LSU Historical Dissertations and Theses
The physical and chemical nonequilibrium transport of alachlor were studied in a surface Gigger soil from different tillages through tracer studies, and batch and miscible displacement experiments. Batch experiments indicated initially fast reaction followed by slow adsorption. Adsorption and desorption results indicated time dependent hysteretic behavior and was best described by a multireaction model incorporating nonlinear equilibrium reaction, a reversible kinetic mechanism, and a consecutive irreversible mechanism. The model predicted alachlor hysteresis and adsorption-desorption kinetics satisfactorily based on parameters obtained from adsorption experiments. Tracer (Eosin Y and Blue FCF dyes) studies showed non-uniformly stained areas in undisturbed soil cores (6.4 …
Work Motivation And Perceived Organizational Effectiveness In Middle Schools., Cynthia Young Wren
Work Motivation And Perceived Organizational Effectiveness In Middle Schools., Cynthia Young Wren
LSU Historical Dissertations and Theses
The primary purpose of this study was to determine the linkage between work motivation derived from the expectancy theory and perceived organizational effectiveness derived from the Parsonian framework. School characteristics of community type, school size, and school socioeconomic status were used as predictor variables in the study. A secondary purpose was to examine these linkages in middle schools and to examine changes over time. Mixed methodologies, including quantitative and qualitative research techniques, were employed. The data were analyzed using the school and the individual teacher as units of analyses. To test the hypotheses, a multiple regression procedure was employed. The …
Children's Relative Influence In Purchase Decision-Making: A Multi-Theoretical Approach., Laura Ann Willis Williams
Children's Relative Influence In Purchase Decision-Making: A Multi-Theoretical Approach., Laura Ann Willis Williams
LSU Historical Dissertations and Theses
Sociological changes in the American family have positioned children to wield greater power in family purchase decisions. Although past descriptive research has confirmed that children are an important source of power in the household, this research has not explored the conceptual justification for the observed patterns of children's relative influence. To fill this gap in the family decision-making literature, this research develops a multi-theoretical conceptual model to explain children's relative influence in a purchase context. Social power theory, resource theory, social exchange theory, and social comparison theory were the conceptual frameworks for this research. Six studies were conducted, including a …
Robust Sensor Fusion Algorithms: Calibration And Cost Minimization., Richard Ree Brooks
Robust Sensor Fusion Algorithms: Calibration And Cost Minimization., Richard Ree Brooks
LSU Historical Dissertations and Theses
A system reacting to its environment requires sensor input to model the environment. Unfortunately, sensors are electromechanical devices subject to physical limitations. It is challenging for a system to robustly evaluate sensor data which is of questionable accuracy and dependability. Sensor fusion addresses this problem by taking inputs from several sensors and merging the individual sensor readings into a single logical reading. The use of heterogeneous physical sensors allows a logical sensor to be less sensitive to the limitations of any single sensor technology, and the use of multiple identical sensors allows the system to tolerate failures of some of …
Dynamic Storage Allocation Using Simon's Model Of Information Usage., Rachelle Folse Cope
Dynamic Storage Allocation Using Simon's Model Of Information Usage., Rachelle Folse Cope
LSU Historical Dissertations and Theses
In today's rapidly changing field of Management Information Systems (MIS) one problem faced by organizations is the consumption of storage capacity due to the growing base of software assets. Research has shown that very few firms effectively monitor program usage. Storage management issues arise due to the fact that many of the programs occupying valuable storage space are used infrequently. In this dissertation, we apply Simon's model of information usage in order to model the dynamic behavior of program usage. This methodology enables organizations to identify the changing usage frequencies of software assets. We propose a classification scheme which MIS …
The Role Of Environmental Attitudes In Incentive-Based Environmental Management: The Case Of The Wetland Reserve Program., Assane Diagne
The Role Of Environmental Attitudes In Incentive-Based Environmental Management: The Case Of The Wetland Reserve Program., Assane Diagne
LSU Historical Dissertations and Theses
Environmental policy in the United States is increasingly relying on incentive-based mechanisms (IBM). Incentive-based mechanisms, are voluntary environmental management instruments based on free market environmentalism, a framework that attempts to harness market forces. A multi-disciplinary approach was developed to evaluate participation decisions in IBM's such as the Wetland Reserve Program. This approach extended the traditional utility maximization approach to choice behavior by including alternative measures of environmental attitudes based on the theory of reasoned action or the New Environmental Paradigm. The addition of these psychological constructs conceptually improved the utility maximization by allowing the consideration of well established determinants of …
Fluorescence Polarization Studies: A Global View Of Molecular Photoionization Dynamics Over An Extended Energy Range., Romith Ranjan Das
Fluorescence Polarization Studies: A Global View Of Molecular Photoionization Dynamics Over An Extended Energy Range., Romith Ranjan Das
LSU Historical Dissertations and Theses
The experimental technique of measuring the degree of polarization of the fluorescence from electronically excited molecular ions is used to determine the alignment of N$\sb2$, CO and N$\sb2$O photoions over an extended range of excitation energy. The polarization of $\rm CO\sp+(B\sp2\Sigma\sp+\to\ X\sp2\Sigma\sp+),\ N\sb2\sp+(B\sp2\Sigma\sb{u}\sp+\ \to \ X\sp2\Sigma\sb{g}\sp+)$, and $\rm N\sb2O\sp+\ (A\sp2\Sigma\sp+\ \to\ X\sp2\Pi)$ fluorescence over a 200 eV photon energy range is used to interpret the oscillator strength distributions for normally unresolved degenerate ionization channels. The results show the influence of a CO $4\sigma\to k\sigma$ shape resonance clearly, and agreement between theory and experiment is excellent. The N$\sb2$O experimental results indicate …
Contextual Influences On Consumer Perceptions Of Tensile Price Claims In Retail Advertisements., Katherine A. Fraccastoro
Contextual Influences On Consumer Perceptions Of Tensile Price Claims In Retail Advertisements., Katherine A. Fraccastoro
LSU Historical Dissertations and Theses
This dissertation was undertaken to contribute to the discipline of marketing by answering three important research questions: (1) "what are the effects of exaggerated tensile price claims as compared to plausible tensile price claims?", (2) "which alternative framework (assimilation contrast theory or the anchoring and adjustment framework) provides the most suitable explanation of the effects of exaggerated tensile price claims on consumer perceptions and discount expectancies?", and (3) "what role do two contextual variables (consistency and sale-rationale) play in moderating the relationship between the consumer price perception variables and the discount expectancies?". To this end, two experiments were performed with …
The Performance Effects Of Strategy, Top-Management Characteristics, And Environment: An Integrative Study Of Firm Decline And Turnaround., Franz Theodore Lohrke
The Performance Effects Of Strategy, Top-Management Characteristics, And Environment: An Integrative Study Of Firm Decline And Turnaround., Franz Theodore Lohrke
LSU Historical Dissertations and Theses
Despite accumulating evidence, unresolved issues remain as to how the components of strategy, top-management characteristics, and environment, as independent variables, combine to affect a firm's success or failure in turning around declining performance. To address such issues, this dissertation developed and tested a series of hypotheses that investigates the effects of strategy, top-management characteristics, and environment on performance. Findings show that turnaround strategy alone is insufficient to explain differences in performance among firms. They also provide some support for the importance of TMG-strategy interaction and show a limited role for the environment in a firm's turnaround. Additionally, the findings show …
The Amazon Myth In Western Literature., Bruce Robert Magee
The Amazon Myth In Western Literature., Bruce Robert Magee
LSU Historical Dissertations and Theses
This dissertation identifies and evaluates the ways in which the Amazon myth has functioned. The Amazon myth functions within broader discourses about the Orient, Africa, and women. It has implications for the ways we define "self" and "other." Because they are often represented as a threat to the border from long ago and/or far away, Amazons can serve both as an excuse for fortifying the center against the margin, and as a way of projecting fantasies into the void. The Amazon myth has incited men to action as they have searched for adventure and Amazons abroad. Intended in part as …
The Use Of Communication Facilitators With Severely Brain Injured Non-Responsive Adults., Alisa Judith Mendoza
The Use Of Communication Facilitators With Severely Brain Injured Non-Responsive Adults., Alisa Judith Mendoza
LSU Historical Dissertations and Theses
Slow-to-Recover (STR) individuals are a subset of the neurologically impaired population who remain non-responsive for extended periods of time before beginning to demonstrate improvement in cognitive, communicative, or motor function. This investigation focuses on the development and implementation of a facilitator-based intervention program carried out with an STR brain injured adult residing in a long-term care facility. The model involved: (1) sensory stimulation techniques to increase responses to external stimuli, (2) augmentative techniques which enabled the subject to control his immediate environment and, (3) training of qualified residents within the facility to act as communication facilitators. Ethnographic procedures were employed …
The Role Of Principals In Predominantly African-American Urban Middle Schools With Low Suspension Rates., Gathogo Wa Mukuria
The Role Of Principals In Predominantly African-American Urban Middle Schools With Low Suspension Rates., Gathogo Wa Mukuria
LSU Historical Dissertations and Theses
The purpose of this study was to explore the role of the principals in predominantly African American urban middle schools with low suspension rates. The basic research questions were: How do the perceptions of principals in predominantly African American urban middle schools that have low suspensions rates compare with perceptions of other principals in predominantly African American urban middle schools; and what alternatives to suspensions do principals use in predominantly African-American urban middle schools that have low suspension rates. I approached this study using a mixed methodology strategy, using quantitative and qualitative techniques. Survey items of 54 principals from seven …