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A Palynological Study Of Two Upland Bogs In The Gulf Coastal Plain, Alabama And Mississippi, Linda C. Pace
A Palynological Study Of Two Upland Bogs In The Gulf Coastal Plain, Alabama And Mississippi, Linda C. Pace
LSU Historical Dissertations and Theses
Fewer Quaternary palynological studies have been conducted in the Gulf Coastal Plain of the southeastern United States than In the northern United States and Canada, resulting in major gaps in the pollen record of this region. The existing studies display discrepancies in the chronology of the pine rise, appearance of the modem climatic regime and vegetation, and timing of the Hypsithermal. In order to fill a gap in the paleoecological data network of the Gulf Coastal Plain, pollen analysis, charcoal analysis, and sediment stratigraphic techniques were used to reconstruct the last 6500 years of Sweetbay Bog, Mississippi, and Minamac Bog, …
Of Rectangles And Centuries. A History Of The Use Of A Garden Pattern From Romanesque Europe To Nineteenth-Century New Orleans, David Dwayne Lewis
Of Rectangles And Centuries. A History Of The Use Of A Garden Pattern From Romanesque Europe To Nineteenth-Century New Orleans, David Dwayne Lewis
LSU Historical Dissertations and Theses
Settlers of New Orleans brought with them ideas of gardens that influenced the way they shaped gardens in the colony. Although the influence of those ideas has been acknowledged in studies of New Orleans gardens, specific connections between the ideas and gardens in New Orleans have not been made. To illuminate some of those connections, this study focuses on one garden pattern — a composition of long, rectangular planting beds -- that is common to at least fifty gardens in New Orleans and to European gardens dating from the ninth century. A developmental history that chronicles the use of the …
Nature, Culture And Big Old Trees: Human Relationships With Ceiba (Ceiba Pentandra) And Live Oak (Quercus Virginiana) In The Landscapes Of Guatemala And Louisiana., Katharine Anderson
Nature, Culture And Big Old Trees: Human Relationships With Ceiba (Ceiba Pentandra) And Live Oak (Quercus Virginiana) In The Landscapes Of Guatemala And Louisiana., Katharine Anderson
LSU Historical Dissertations and Theses
The ceiba in Guatemala and the live oak in Louisiana are examples of two trees that attain great size and age within the cultural landscape. Humans have adopted both as symbolic trees; they protect, encourage and even plant them. As the trees age, they become historic landmarks, are indicators of important places, and give character to the landscape. Although each tree is native within portions of each study area, both have taken advantage of human disturbance to expand beyond their original habitats. In addition, they have been moved deliberately by humans to new areas well beyond their geographical limits. Other …
Coastal Management Regarding Beach And Dune Protection: An Exploratory Analysis., Melissa Lee Gordon
Coastal Management Regarding Beach And Dune Protection: An Exploratory Analysis., Melissa Lee Gordon
LSU Historical Dissertations and Theses
The Congressional declaration of national coastal policy in Section 303 of the Federal Coastal Zone Management Act (CZMA) of 1972 charges the coastal states to meet the objective of coastal resource protection. At this time, when the appropriate mix of authority between federal and state governments concerning environmental regulations is in debate; it is important to determine whether the inter-governmental partnership created by CZMA is effective in protecting coastal resources. This research is an exploratory analysis of coastal management regarding beach and dune protection within the twenty-four coastal states. The dissertation objectives are as follows: (1) determine the level of …
Solid State Energy Barriers To Olefin Ligand Rotation Of Rhodium Compounds And Single Crystal X-Ray Structure Determination Of Synthetic And Natural Products., Yen-Hsiang Liu
LSU Historical Dissertations and Theses
Atomic displacement parameters (ADPs) were derived from X-Ray diffraction data collected at two different temperatures (294K and 115K) from a single crystal of Rh(acac)(C$\rm\sb2H\sb4)\sb2.$ Since the thermal ellipsoids of atoms in the one crystallographically independent ethylene group displayed distinctive elongation normal to the C=C bond, a TLS rigid body analysis of the $\rm C\sb2H\sb4$ ligand rotation was undertaken. Using a locally modified version of Trueblood's THMA14 computer program, it was found that at 115K the root-mean-square amplitude of libration normal to the Rh-(CC centroid) axis is $7(4)\sp\circ,$ while at 294K it is $10(6)\sp\circ$ (estimated standard deviations in parentheses). The rotational …
Genotype By Environment Interaction For Ear Moisture Loss Rate In Corn., Robert T. Magari
Genotype By Environment Interaction For Ear Moisture Loss Rate In Corn., Robert T. Magari
LSU Historical Dissertations and Theses
Corn (Zea mays L.) hybrids with rapid ear moisture loss rate (EMLR) are needed to reduce post-harvest production costs relative to artificial grain drying. Previous investigations indicated that genetic variation for grain dry-down rate existed; however, genotype by environment interaction (GEI) for this trait has not been specifically investigated. The objectives of this study were: (1) to evaluate EMLR and stability of selected commercial corn hybrids in different environments, (2) to determine approximate optimum numbers of plants per plot, replications, and environments for evaluating EMLR, and (3) to assess the contribution of known environmental factors to GEI for EMLR. Experiments …
Development And In Vivo Evaluation Of A Pura Mutant Strain Of The Channel Catfish Pathogen Edwardsiella Ictaluri., Mark Lee Lawrence
Development And In Vivo Evaluation Of A Pura Mutant Strain Of The Channel Catfish Pathogen Edwardsiella Ictaluri., Mark Lee Lawrence
LSU Historical Dissertations and Theses
Edwardsiella ictaluri is the causative agent of enteric septicemia of catfish (ESC), which is the most serious disease affecting the channel catfish industry. Killed vaccines have been inconsistent in providing protection against ESC, and no live attenuated vaccines have been described. The purpose of this study was to develop a nutritionally attenuated mutant strain of E. ictaluri and evaluate its virulence and vaccine efficacy. An E. ictaluri genomic library was constructed, and a clone containing the purA gene was isolated and sequenced. The E. ictaluri purA gene was found to have several features in common with the E. coli purA …
An Empirical Examination Of The Grant Induced Price And Income Effects Of Lump-Sum Intergovernmental Aid., Peter Michael Mitias
An Empirical Examination Of The Grant Induced Price And Income Effects Of Lump-Sum Intergovernmental Aid., Peter Michael Mitias
LSU Historical Dissertations and Theses
This work is concerned with the nature of fiscal illusion and its effect on local government spending. Fiscal illusion is hypothesized to be a source of the "flypaper effect." The flypaper effect is an empirical phenomenon of the asymmetric effects of income and intergovernmental aid on the level of local public spending in the context of demand models of the local fisc. Lump sum aid is observed to be more stimulative on the level of public expenditures than income (Gramlich and Galper 1973). As a method of explaining this phenomenon, tax-price and income illusion are incorporated into demand models of …
Global Experimental Effects Of Country Of Origin And Product Type On The Structural Parameters Of A Purchase Intentions Model., Ruth L. Lumb
Global Experimental Effects Of Country Of Origin And Product Type On The Structural Parameters Of A Purchase Intentions Model., Ruth L. Lumb
LSU Historical Dissertations and Theses
An empirical assessment of the overall effects of country of origin and product type on the structural parameters of a purchase intentions model is undertaken. First, it is theorized that (1) product involvement, (2) perceived risk, (3) psychic distance, (4) perceived product quality, and (5) national character will directly or indirectly affect purchase intentions of imported goods. These constructs form the operational framework for purchase intentions of foreign-made products, which is presented in the form of a structural equation model. Secondly, it is proposed that country of origin and product type may be viewed as global experimental variables, thereby having …
Towards Bimetallic Asymmetric Hydroformylation Catalysis: Separation Of The Diastereomers And Enantiomers Of A Binucleating Tetraphosphine Ligand., Pia Rosario Alburquerque
Towards Bimetallic Asymmetric Hydroformylation Catalysis: Separation Of The Diastereomers And Enantiomers Of A Binucleating Tetraphosphine Ligand., Pia Rosario Alburquerque
LSU Historical Dissertations and Theses
The separation of the racemic and meso diastereomers of the binucleating ligand et,ph-P4 ((Et$\rm \sb2PCH\sb2CH\sb2)(Ph)PCH\sb2P(Ph)(CH\sb2CH\sb2PEt\sb2))$ was achieved. The thiocyanate nickel(II) complexes of mixed racemic- and meso-et,ph-P4 were separated based on their different solubilities in ethanol. Cyanolysis of the separated racemic and meso nickel(II) complexes allowed the recovery of the free racemic- and meso-et,ph-P4 ligands. The many species involved in this process were identified in order to obtain consistent and improved results. After the separation of the diastereomers, the enantiomers of racemic-et,ph-P4 were separated in order to study the ability of the bimetallic chiral rhodium et,ph-P4 complexes to act as precursors …
Efficient Mapping Of Neural Network Models On A Class Of Parallel Architectures., Behnam Seyed Arad
Efficient Mapping Of Neural Network Models On A Class Of Parallel Architectures., Behnam Seyed Arad
LSU Historical Dissertations and Theses
This dissertation develops a formal and systematic methodology for efficient mapping of several contemporary artificial neural network (ANN) models on k-ary n-cube parallel architectures (KNC's). We apply the general mapping to several important ANN models including feedforward ANN's trained with backpropagation algorithm, radial basis function networks, cascade correlation learning, and adaptive resonance theory networks. Our approach utilizes a parallel task graph representing concurrent operations of the ANN model during training. The mapping of the ANN is performed in two steps. First, the parallel task graph of the ANN is mapped to a virtual KNC of compatible dimensionality. This involves decomposing …
Etiology And Biological Control Of Seedling Disease In Water-Seeded Rice., Se-Chul Chun
Etiology And Biological Control Of Seedling Disease In Water-Seeded Rice., Se-Chul Chun
LSU Historical Dissertations and Theses
In order to assess the potential of biological control of rice seedling disease, detailed etiological information was required, i.e. when and for how long are seedlings susceptible and which portions of the seed and seedling are susceptible. Contaminant-free seeds were required for these studies. For this purpose, rice seeds were soaked for 2 hrs in freshly prepared 2.6% sodium hypochlorite adjusted to pH 7.0 with a final concentration of 0.5 M potassium phosphate. This treatment was not only very effective in disinfesting seeds but also seemed to promote seedling growth. On the basis of this observation, a study was conducted …
Electron Scattering Studies In The Framework Of The Symplectic Shell Model., Jutta Escher
Electron Scattering Studies In The Framework Of The Symplectic Shell Model., Jutta Escher
LSU Historical Dissertations and Theses
Electron scattering offers numerous advantages for studying nuclear structure: the weakness of the electromagnetic interaction, the precise knowledge of the reaction mechanism, the ability to vary independently the transferred momentum and energy, as well as the excellent spatial resolution that can be obtained with the point-like probing particles, have made this approach a valuable tool in nuclear physics. Scattering experiments provide crucial tests for the applicability and limitations of modern nuclear models and further our understanding of the nucleon-nucleon interaction and its modifications in nuclear matter. A microscopic theory for deformed nuclei, which takes proper account of the Exclusion Principle …
Applying Significance Testing To The Taguchi Methods Of Quality Control., Shannon Jo Kast
Applying Significance Testing To The Taguchi Methods Of Quality Control., Shannon Jo Kast
LSU Historical Dissertations and Theses
During recent years, the Taguchi Methods of quality control have been adopted in many industries because the goal of the methods is to produce a product or process that is robust to environmental conditions and component variation. The methodology involves using statistical experimental designs to achieve this goal through analyzing a performance measure, called a signal-to-noise ratio, that takes into account both variation and target value. However, many statisticians have criticized the Taguchi Methods for the lack of use of sound statistical practices. This research will focus on one specific aspect of the Taguchi Methods: the signal-to-noise ratio. Sampling distributions …
Pure Framed Braids And 3-Manifolds., Jonathan Natov
Pure Framed Braids And 3-Manifolds., Jonathan Natov
LSU Historical Dissertations and Theses
This dissertation looks at representations of framed pure braids and compact orientable three manifolds. A representation, $\Phi:Z\sp{n}\oplus P\sb{n}\to \Gamma\sb{n},$ is constructed from the framed pure braid group on n strands to the mapping class group on a surface of genus n. The representation is used to obtain a presentation of the fundamental group. The representation, like that of (M-P), is compatible with Heegaard and Surgery descriptions. An algorithm is presented for transforming mapping class group elements to a stably equivalent pure framed braid, under the correspondence given by the representation. A geometric description, using the representation, is given for multiplication …
Nanoscale Structures And Fracture Processes In Advanced Ceramics: Million-Atom Md Simulations On Parallel Architectures., Andrey A. Omeltchenko
Nanoscale Structures And Fracture Processes In Advanced Ceramics: Million-Atom Md Simulations On Parallel Architectures., Andrey A. Omeltchenko
LSU Historical Dissertations and Theses
Properties and processes in silicon nitride and graphite are investigated using molecular-dynamics (MD) simulations. Scalable and portable multiresolution algorithms are developed and implemented on parallel architectures to simulate systems containing 10$\sp6$ atoms interacting via realistic potentials. Structural correlations, mechanical properties, and thermal transport are studied in microporous silicon nitride as a function of density. The formation of pores is observed when the density is reduced to 2.6 g/cc, and the percolation occurs at a density of 2.0 g/cc. The density variation of the thermal conductivity and the Young's modulus are well described by power laws with scaling exponents of 1.5 …
Everyday Problem-Solving Goals: Contributions Of Age And Individual Differences., Lisa Eileen Norris
Everyday Problem-Solving Goals: Contributions Of Age And Individual Differences., Lisa Eileen Norris
LSU Historical Dissertations and Theses
The purpose of the present research was to examine the contribution of age and individual differences to everyday problem solving, focusing on goal preference. Three pilot studies were conducted to generate interpersonal problem solving goals that were high in emotional arousal and low in emotional arousal. In the Experiment Proper, 40 young and 40 older adults were given 6 vignettes depicting everyday problems. Subjects rated their preference of both high and low experimenter-provided goals. Subjects then completed 4 individual difference questionnaires that measured stimulation intensity, affect intensity, and emotional control. Results showed that both younger and older adults endorsed more …
Ephemeral Hinterlands And The Historical Geography Of Trujillo, Honduras, 1525-1950., Taylor E. Mack
Ephemeral Hinterlands And The Historical Geography Of Trujillo, Honduras, 1525-1950., Taylor E. Mack
LSU Historical Dissertations and Theses
The historical geography of Trujillo, Honduras is told through its changing hinterlands. This dissertation uses world systems to approach and understand the historical geography of Trujillo, however, the focus is on this peripheral area of the world system, rather than on the core. The coast of the western Caribbean experiences economic boom and bust cycles. The periodization of Trujillo's historical geography is based on the city's boom and bust periods, using primary documents from archives in Central America and Spain. Trujillo's first boom period lasted from its founding in 1525 until 1550, based on gold exports from the interior. During …
The Prism Of Laughter: Antebellum Humorists In Regional Perspective., Henry O. Robertson Jr
The Prism Of Laughter: Antebellum Humorists In Regional Perspective., Henry O. Robertson Jr
LSU Historical Dissertations and Theses
This work revises earlier interpretations of antebellum American humorists and sets forth a new model for understanding their accomplishments. Rooted in historical thinking, this study integrated biography, publishing history, critical responses, and a penetrating analysis of the sketches of several major figures. The first third examined Seba Smith, Joseph C. Neal, and Augustus Baldwin Longstreet. A devotion to their communities in Maine, Philadelphia, and Georgia, respectively, and preference for writing warm, genial selections remained important shared influences while cultural differences between the societies in which each matured and wrote made their humor diverge significantly. In both content and expression their …
Created Works, Created Selves: Intersections Of Genre And Self-Fashioning In The New World., Leonard Joseph Vraniak Jr
Created Works, Created Selves: Intersections Of Genre And Self-Fashioning In The New World., Leonard Joseph Vraniak Jr
LSU Historical Dissertations and Theses
John Smith, Roger Williams, and Thomas Morton created images of themselves to attempt to gain position in the New World colonial undertaking, and each uses techniques of specific genres to bolter those images. However, each demonstrates a different degree of self-fashioning. John Smith collects and republishes texts much like Richard Hakluyt did back in England. However, Hakluyt's collections just reproduced texts, while Smith mixed others' writings about his colonial activities with his own work, creating a hybrid text with Smith as the subject. Smith's emphasis upon individual effort mirrors one level of humanistic achievement that Europeans of his era were …
Studies Of The Morphology And Dynamics Of Flame-Generated Agglomerates Using Dynamic Light Scattering., Glenn Michael Waguespack
Studies Of The Morphology And Dynamics Of Flame-Generated Agglomerates Using Dynamic Light Scattering., Glenn Michael Waguespack
LSU Historical Dissertations and Theses
Accurate determination of the morphology and dynamics of aerosols consisting of agglomerated sub-micron sized particulates is needed for soot formation studies, process monitoring in flame-based materials synthesis applications, and pollution control studies. The objective of the current study is to investigate the application of dynamic light scattering (DLS) to flames as an extension of current measurement technologies. Unlike previous DLS flame studies, conventional polarized DLS is supplemented with depolarized DLS measurements to account for the agglomerates' anisotropy. Because unavailable relationships between the agglomerates' morphological parameters and the Brownian translational and rotational diffusion coefficients under non-continuum conditions are required for accurately …
Removal Of Hydrophobic Organic Compounds And Surfactants From Wastewater: Polyaphron-Enhanced Solvent Extraction And Biodegradation., Chunlong Zhang
Removal Of Hydrophobic Organic Compounds And Surfactants From Wastewater: Polyaphron-Enhanced Solvent Extraction And Biodegradation., Chunlong Zhang
LSU Historical Dissertations and Theses
Surfactant based processes are emerging and becoming increasingly important in pollution control. A novel predispersed solvent extraction (PDSE) technique using surfactant based colloidal liquid aphrons (CLAs or polyaphrons) and colloidal gas aphrons (CGAs) for the removal of hydrophobic organic compounds (HOCs) from the aqueous phase was studied. The process involves an extraction of HOCs into CLAs, followed by a flotation using CGAs. Polyaphrons were characterized by a particle size analyzer. The size distribution was found to be bimodal. The effects of surfactant types, surfactant concentrations and storage times on the size distribution were studied. Polyaphrons have long shelf-lives and are …
Lex Scripta Et Lex Non Scripta: Tensions Between Law And Language In Late Fourteenth-Century England And Its Literature., Susanne Sara Thomas
Lex Scripta Et Lex Non Scripta: Tensions Between Law And Language In Late Fourteenth-Century England And Its Literature., Susanne Sara Thomas
LSU Historical Dissertations and Theses
This work explores the connections between Middle English literature and transitions occurring within the English legal system. It focuses on the way Chaucer and the Gawain-poet negotiate the tension between the legal potency of the written word and the spoken word. As the common law contains an ongoing negotiation between written and unwritten forms of law, the dissertation discusses the function and significance of the tension between the lex scripta and the lex non scripta. It argues that the increasing displacement of oral and written language in the legal realm is a source of considerable cultural anxiety, and this anxiety …
Production Of Transgenic Channel Catfish., Mark Christian Bates
Production Of Transgenic Channel Catfish., Mark Christian Bates
LSU Historical Dissertations and Theses
The channel catfish industry has experienced tremendous growth over the last several years. This growth has triggered more intensive culture practices resulting in disease outbreaks and devastating mortalities. Medicated feeds and vaccination have been of limited use. This research presents studies on techniques to produce disease resistant channel catfish by gene transfer. The gene used was the cecropin B gene from the giant silkworm moth Hyalophora cecropia, controlled by an acute phase response (APR) promoter also from H. cecropia. The objectives of this study were to: (1) determine if an early maturing population of catfish from Lake Maurepas, Louisiana, could …
High-Resolution Facies Analysis Of Deltaic Subenvironments Of The Pennsylvanian Atoka Formation, Arkansas., Tanwi Gangopadhyay
High-Resolution Facies Analysis Of Deltaic Subenvironments Of The Pennsylvanian Atoka Formation, Arkansas., Tanwi Gangopadhyay
LSU Historical Dissertations and Theses
The present research was aimed at comparison and distinction between various deltaic subenvironments from Pennsylvanian deposits of the Arkoma Basin, Arkansas. Detailed facies analysis of deltaic deposits reveal significant variation in sedimentary characteristics between different subenvironments. A multi-pronged approach, including documentation of measured sections and gamma ray profiles in the field and subsequent laboratory analysis of samples, was undertaken. The Atoka Formation deltaic deposits have been established primarily as representing fluvially-dominated deltas. Interdistributary bay fill deposits are splintery shales with abundant siderite nodules. Crevasse splay sandstone units are ripple cross-laminated and coarsen and thicken upward to a maximum of 60cm …
Among Women: Toni Morrison's Mothers, Sisters, And Daughters., Hazel Ruth Reames Caillouet
Among Women: Toni Morrison's Mothers, Sisters, And Daughters., Hazel Ruth Reames Caillouet
LSU Historical Dissertations and Theses
This work explores the relationships between and among women in the fiction of Toni Morrison. Morrison's mothers, sisters, and daughters cannot function without the love and support of a community of women. Those characters who abandon or reject this community become lost to their own world. Morrison women, thus, find themselves in and through other women. The first two chapters establish Morrison's characters in relation to those of other authors in order to show her unique sense of community. Comparing Morrison's work to Virginia Woolf's A Room of One's Own and her emphasis on individuality and isolation illustrates Morrison's dependence …
Atmospheric Neutrino Detection Using A Large Water Cerenkov Detector., Russell Clark
Atmospheric Neutrino Detection Using A Large Water Cerenkov Detector., Russell Clark
LSU Historical Dissertations and Theses
A 2.1 kton-yr exposure of data from the Irvine-Michigan-Brookhaven detector has yielded 72 atmospheric neutrino events with a vertex contained inside the fiducial volume and at least 0.95 GeV of visible Cerenkov energy. The ratio of muon-like events with respect to the total number of events was calculated for the data and the Monte Carlo simulation. The ratio of these two ratios $({muon-like\over total})\sb{Data}/ ({muon-like\over total})\sb{MC}$ was found to be $1.1\sbsp{-0.12}{+0.07}(stat.)\pm\ 0.11(syst.).$ The zenith angle dependence of this ratio of ratios is consistent with being flat. The region of $sin\sp2(2\theta) > 0.5$ and $\delta m\sp2\ > 9.8 \times 10\sp{-3} eV\sp2$ has been …
Acute Effects Of Passive Muscle Stretching On The Stretch-Shortening Phenomenon., Andrew Cornwell
Acute Effects Of Passive Muscle Stretching On The Stretch-Shortening Phenomenon., Andrew Cornwell
LSU Historical Dissertations and Theses
Two experiments examined the acute effects of passive muscle stretching on the performance of a skill (vertical jump) which takes advantage of the stretch-shortening phenomenon. Because recent work suggests that passive stretching might impede the mechanisms (elastic and myoelectrical potentiation) thought to be responsible for this phenomenon, it was hypothesized that stretching would decrease the jump height of jumps executed with a preparatory countermovement (CMJ), but not the jump height of those initiated from a static, squatting position (SJ). In the first experiment, subjects performed CMJ and SJ jumps under two different conditions: after passively stretching the knee and hip …
A Cuban Convent In The Age Of Enlightened Reform: The Observant Franciscan Community Of Santa Clara Of Havana, 1768-1808., John James Clune Jr
A Cuban Convent In The Age Of Enlightened Reform: The Observant Franciscan Community Of Santa Clara Of Havana, 1768-1808., John James Clune Jr
LSU Historical Dissertations and Theses
The reform of Mexican convents in the late eighteenth and early nineteenth century generally has been shown to have been ineffective. I suggest that reform at the Observant Franciscan community of Santa Clara of Havana achieved much better results. While conventual reform in Cuba did not attain perfection, it followed the pattern of administrative, economic and military reform in that it was more effective on the island than it was elsewhere in the Spanish empire. The success of conventual reform in Havana must be attributed to the diligence of the Spanish Crown. Whereas the reform of convents in Mexico became …
A Case Study Analysis Of The Impact Peer Coaching Has On Assisting First And Third Grade Teachers In The Implementation Of Portfolio Assessment., Lila D. Finney
A Case Study Analysis Of The Impact Peer Coaching Has On Assisting First And Third Grade Teachers In The Implementation Of Portfolio Assessment., Lila D. Finney
LSU Historical Dissertations and Theses
In this period of controversy and uncertainty regarding the effectiveness of our public schools, educators face many problems in teaching today's children. One specific area of concern relates to assessment. An increasing number of teachers have turned to the use of portfolios to document the literacy growth of their students. If teachers are to use portfolio assessment to measure student achievement accurately, effective staff training is necessary. The purpose of this study was to observe six teachers, in grades one and three, as they implemented portfolio assessment with the assistance of two peer coaches. This study describes the peer coaching …