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Shell Model Description Of Normal Parity Bands In Heavy Deformed Nuclei., Gabriela Popa Jan 2001

Shell Model Description Of Normal Parity Bands In Heavy Deformed Nuclei., Gabriela Popa

LSU Historical Dissertations and Theses

The low-energy spectra and electromagnetic transition strengths in 160,162,164Dy, 156,158,160Gd, and 168Er are described in the framework of the pseudo-SU(3) model. The Hamiltonian includes spherical single-particle energies, the Quadrupole-quadrupole interaction, and proton and neutron pairing terms with the strengths of these interaction fixed from systematics. The strengths of an additional four rotor-like terms that are included in the Hamiltonian, which do not mix SU(3) representations and induce only small changes in the spectra, were allowed to vary and a consistent set of these parameters was found. Proton and neutron degrees of freedom are considered explicitly by building the basis states …


Worldly Rites: The Social And Political Significance Of Religious Services In Louisiana, 1803--1865., Julia Huston Nguyen Jan 2001

Worldly Rites: The Social And Political Significance Of Religious Services In Louisiana, 1803--1865., Julia Huston Nguyen

LSU Historical Dissertations and Theses

In antebellum and Civil War Louisiana, religious rituals contained more than spiritual meaning. They also carried social and political significance that can illustrate a great deal about that society. Sabbath services, holidays, revivals, baptisms, weddings, and funerals all reflected the values that Louisianans believed to be important. By looking at religion and the ways that residents of Louisiana experienced it, not only on a daily basis but also during the major milestones of life, one can come to a greater understanding of the ways in which they structured their society and interacted with it. Through an examination of Louisiana religion, …


Synthesis Of Phosphonopeptides And Alpha, Alpha-Dialkylated Amino Acid-Rich Peptides., Sheila Denise Rushing Jan 2001

Synthesis Of Phosphonopeptides And Alpha, Alpha-Dialkylated Amino Acid-Rich Peptides., Sheila Denise Rushing

LSU Historical Dissertations and Theses

Peptides and peptide analogs are central to the understanding of biological and biochemical phenomena as well as in the development of new pharmaceutical agents. This research encompasses two classes of peptide mimetics: phosphonopeptides and short, amphipathic peptides rich in alpha,alpha-disubstituted amino acids (alphaalphaAA). The focus of the first part of the peptide analog project was on the preparation of sterically-hindered phosphonamide and thiophosphonamide dipeptides. Conditions were developed, based on our P(III) synthetic approach, for the preparation of the phosphonamide dipeptides, Cbz-CyhGly psi [P (O) (OpNb) NH] Trp-NH2 and Cbz-CyhGly psi [P (O) (OpNb) NH] Trp-OMe, which were previously unattainable by …


Middle School Students' Understanding Of The Natural History Of The Earth And Life On Earth As A Function Of Deep Time., Azalie Cecile Pulling Jan 2001

Middle School Students' Understanding Of The Natural History Of The Earth And Life On Earth As A Function Of Deep Time., Azalie Cecile Pulling

LSU Historical Dissertations and Theses

The purpose of this study was to use deep time, that is geologic time as a mechanism to explore middle school students' understanding of the natural history of the earth and the evolution of life on earth. Geologic time is a logical precursor to middle school students' understanding of biological evolution. This exploratory, mixed model study used qualitative and quantitative methods in each stage of the research to explore sixth grade students, understanding of geologic time, their worldviews (e.g., conceptual ecology), and conceptual change. The study included fifty-nine students in the large group study and four case studies. The primary …


Campus Responsibility For Alcohol -Related Injuries: A Law And Policy Analysis., Nathan Mccain Roberts Jan 2001

Campus Responsibility For Alcohol -Related Injuries: A Law And Policy Analysis., Nathan Mccain Roberts

LSU Historical Dissertations and Theses

The purpose of this study was to explore the evolution of the legal concept of legal liability of higher education institutions for alcohol-related injuries using a theoretical framework provided by tort law. The analysis was designed to provide a greater understanding of how and why the law concerning this concept has evolved. In addition to a legal analysis, interviews were conducted with student affairs administrators at institutions participating in the Robert Wood Johnson Foundation "A Matter of Degree: Reducing High-Risk Drinking Among College Students" program. Particular attention was given to the influences identified by the student affairs administrators as catalysts …


Women And The Law Of Property Under Louisiana Civil Law, 1782--1835., Sara Jane Brooks Sundberg Jan 2001

Women And The Law Of Property Under Louisiana Civil Law, 1782--1835., Sara Jane Brooks Sundberg

LSU Historical Dissertations and Theses

This dissertation explores the influence of Louisiana civil law on women's property ownership between 1782 and 1835. Louisiana civil law offered women significant advantages over the predominant common law tradition found in most early American states. Louisiana civil law, unlike common law, allowed a married woman to retain her legal identity, her personal property and her right to monetary rewards from her labors within the family. A woman in early Louisiana owned half the property accumulated during marriage and she inherited her half of the property at the dissolution of the marriage. She also owned and could administer separate property. …


Systemic And Colonic Hemodynamic And Vasomotor Responses To Adenosine Triphosphate In Horses., Joanne Tetens Jan 2001

Systemic And Colonic Hemodynamic And Vasomotor Responses To Adenosine Triphosphate In Horses., Joanne Tetens

LSU Historical Dissertations and Theses

Clinically healthy horses were instrumented to measure hemodynamic, metabolic, hematologic, and serum biochemical variables and monitor clinical signs during and after IV infusion of ATP-MgCl2. Conscious horses were administered ATP-MgCl2 (0.05 mg ATP/kg body weight/min; 0.05 mg/kg/min increments; maximum rate-1.0 mg/kg/min), which caused a rate-dependent increase in cardiac output, decrease in systemic vascular resistance, and mild pulmonary hypertension. The maximal safe infusion rate was 0.3 mg ATP/kg body weight/min. Anesthetized horses administered ATP-MgCl2 (0.1 to 1 mg/kg/min; 0.1 mg/kg/min increments) developed a rate-dependent decrease in systemic and colonic vascular resistance via vasodilatation. In conscious horses administered lowdose endotoxin, ATP-MgCl2 (dose-100 …


Medical Image Set Compression Using Wavelet And Lifting Combined With New Scanning Techniques., Rahman Tashakkori Jan 2001

Medical Image Set Compression Using Wavelet And Lifting Combined With New Scanning Techniques., Rahman Tashakkori

LSU Historical Dissertations and Theses

Today, hospitals are desirous of better methods for replacing their traditional film-based medical imaging. A major problem associated with a "film-less hospital" is the amount of digital image data that is generated and stored. Image compression must be used to reduce the storage size. This dissertation presents several techniques involving wavelet analysis, lifting, image prediction and image scanning to achieve an efficient diagnostically lossless compression for sets of medical images. This dissertation experimentally determines the optimal wavelet basis for medical images. Then, presents a new wavelet based prediction method for prediction of the intermediate images in a similar set of …


Red Morningglory (Ipomoea Coccinea L.) And Sugarcane Response To Soil-Applied Herbicides., Blaine Joseph Viator Jan 2001

Red Morningglory (Ipomoea Coccinea L.) And Sugarcane Response To Soil-Applied Herbicides., Blaine Joseph Viator

LSU Historical Dissertations and Theses

Laboratory and greenhouse studies were conducted to determine if reported red morningglory (Ipomoea coccinea L.) control failures with atrazine in sugarcane are due to triazine-resistant mutants. Terminal fluorescence of leaf material from locations with and without a history of atrazine use increased after treatment with atrazine, indicating electron transport inhibition and hence, triazine susceptibility. Postemergence (POST) application of atrazine controlled plants from all populations at least 99%, supporting findings of the fluorescence assay. A field study was conducted to evaluate red morningglory control and sugarcane injury with herbicides applied at layby. At 45 days after treatment (DAT), control with sulfentrazone …


Center Vortices In Confinement., Viorel-Andrei Alexandru Jan 2001

Center Vortices In Confinement., Viorel-Andrei Alexandru

LSU Historical Dissertations and Theses

The confinement property of quarks is still one of the puzzles of today's physics. Although QCD is believed to accurately describe the interaction between quarks, due to the peculiar nature of the theory we are still unable to prove that it confines the quarks. Most analytical efforts in QCD are based on perturbative techniques which are useless in studying confinement. Lattice gauge theory enables us to get non-perturbative results. We use lattice techniques to investigate one of the proposed mechanisms of quark confinement, namely the center vortex idea. We first present a cursory introduction to lattice theory and the methods …


School Culture, Teacher Efficacy, And Decision -Making In Demonstrably Effective And Ineffective Schools., Jacquline Jeanine Bobbett Jan 2001

School Culture, Teacher Efficacy, And Decision -Making In Demonstrably Effective And Ineffective Schools., Jacquline Jeanine Bobbett

LSU Historical Dissertations and Theses

The purpose for this study was fourfold. First, a conceptual model was developed to help understand teacher perceptions of the schools' professional culture, teachers' self-efficacy beliefs, participation in decision making and linkages to school effectiveness. Second, an original measure of teachers' self-efficacy beliefs about their own teaching effectiveness was developed and tested. Third, characteristics of the measures (quantitative and qualitative) were reported. Fourth differences in the mediating variables related to school effectiveness were examined. A stratified sample made up of 1,057 total school faculty in 41 elementary schools representing the uppermost and lower most quartiles of poverty in a southern …


A Study Of The Measurement And Sources Of Teachers' Self And Collective Efficacy Beliefs In Professional Learning Environments., Amy Marie Barrilleaux Dellinger Jan 2001

A Study Of The Measurement And Sources Of Teachers' Self And Collective Efficacy Beliefs In Professional Learning Environments., Amy Marie Barrilleaux Dellinger

LSU Historical Dissertations and Theses

This study examined relationships between sources of efficacy information available in teachers' professional learning environments and teacher self-, work-group collective and faculty collective efficacy beliefs. An argument is presented that teachers' individual and collective efficacy beliefs are vital factors that mediate linkages between professional learning and meaningful change in schools. School professional learning environments are hypothesized to provide efficacy information that may serve to enhance teachers' beliefs in their abilities to accomplish tasks that are linked to effective teaching and learning. Social cognitive theory and triadic reciprocal causation provided the framework for this research. Self-efficacy theory, a sub-theory of social …


Teacher Education Reform And Accountability: A Study Of The Louisiana Blue Ribbon Commission On Teacher Quality., Patricia Ann Davis Exner Jan 2001

Teacher Education Reform And Accountability: A Study Of The Louisiana Blue Ribbon Commission On Teacher Quality., Patricia Ann Davis Exner

LSU Historical Dissertations and Theses

This study describes Louisiana's 1999--2000 Blue Ribbon Commission on Teacher Quality, focusing primarily on Commission proceedings and the evolution of its recommendations within a context of standards-based teacher education reform history. Employing case study methodology contextualized in historical and ethnographic narrative, this nine month study examined policy recommendations for Louisiana's teacher education programs that resulted from Commission meetings. Aims of the study included describing the development of these recommendations, their relation to national teacher education reform movements, and their potential impact on university teacher preparation programs. The research provides not only documentation of Commission proceedings of some historical value, but …


Surface Modification And Characterization Of Pmma Used In The Construction Of Microelectromechanical Systems., Alyssa Catharyn Henry Jan 2001

Surface Modification And Characterization Of Pmma Used In The Construction Of Microelectromechanical Systems., Alyssa Catharyn Henry

LSU Historical Dissertations and Theses

Poly(methyl methacrylate), PMMA, is a standard photoresist and is also a popular material out of which microelectromechanical systems are made. Described within is the characterization of the bulk and surface properties of commercial PMMA sheets and their relevance to PMMA as a photoresist. The surface chemical modification and characterization of commercial PMMA sheets is discussed; these modifications and their chemical properties have direct pertinence to the use of PMMA as a substrate for the fabrication of microelectromechanical devices. The molecular masses of pristine and irradiated PMMAs were determined by means of gel-permeation chromatography (GPC) and it was found that the …


Atomic And Electronic Structure Of Ultra-Thin Metal Epitaxy On Metal And Semiconductor Surfaces., Dustin Alexander Hite Jan 2001

Atomic And Electronic Structure Of Ultra-Thin Metal Epitaxy On Metal And Semiconductor Surfaces., Dustin Alexander Hite

LSU Historical Dissertations and Theses

The fundamental study of heteroepitaxy has proved to have profound influences on technological applications of thin films, particularly due to the reduced dimensionality and quantum mechanical effects found in these unique nanostructured systems. In this study, particular attention is given to the correlations between atomic-scale morphology and the consequential electronic structure of heteroepitaxial systems that exhibit deviations from traditional growth modes in the initial stages of growth. Surface-confined systems are especially interesting because they exhibit properties that are fundamentally different from the bulk and often have no bulk analogs existing in nature. The surface-sensitive techniques of variable-temperature scanning tunneling microscopy …


A Neural Network Approach To Dependent *Reliability Estimation., Roya Javadpour Jan 2001

A Neural Network Approach To Dependent *Reliability Estimation., Roya Javadpour

LSU Historical Dissertations and Theses

This research presents the creation of a new model for automating the generation of component and system reliability estimates from simulated field data for tightly coupled systems. The model utilizes the CMAC neural network architecture, which resembles the human cerebellum and is capable of approximating nonlinear functions. An analysis and testing of the network as a tool for reliability prediction of dependent components within an assembly has been performed. In order to evaluate the performance of the model, the network has been tested on simulated data and provided over 90% performance accuracy in learning non-linear functions that represent the dependency …


Natural History And Phytogeography Of The Loess Hills And Ravines, Lower Mississippi Embayment., Igor Igorevich Ignatov Jan 2001

Natural History And Phytogeography Of The Loess Hills And Ravines, Lower Mississippi Embayment., Igor Igorevich Ignatov

LSU Historical Dissertations and Theses

Although located near the middle of the Southeastern Coastal Plain, the hardwood forests of the Loess Hills of the Lower Mississippi Embayment have never been thoroughly studied or satisfactorily described in the literature. This dissertation is a case study of the biogeographic variation in the species composition and structure of the mature ravine hardwood forests within the southern section of the Loess Hills, from Warren County, Mississippi, south to East Baton Rouge and Vermilion Parishes, Louisiana, as affected by latitude, physiography, edaphic conditions, and disturbance. A parallel goal is, on the basis of the current biogeographic conditions and successional dynamics, …


An Exploratory Study Of The Influence Of National And State Standards On Middle School Science Teachers' Classroom Assessment Practices., Kathy Jean Mcwaters Jan 2001

An Exploratory Study Of The Influence Of National And State Standards On Middle School Science Teachers' Classroom Assessment Practices., Kathy Jean Mcwaters

LSU Historical Dissertations and Theses

Classroom assessment practices of middle school science teachers were identified and the influence of national and state science standards on these practices was examined. In Phase I of this study a mail questionnaire was sent to 450 middle school (grades 5,6,7 and 8) science teachers in 17 parishes in Louisiana to obtain information about their classroom assessment practices. In Phase II, nine middle school teachers in eight departmentalized classrooms, two classes at each grade, participated in a qualitative study. Data were collected through questionnaires, classroom observations, interviews and document analysis. Data analysis revealed three major categories of classroom assessment targets: …


Wavelet Analysis And Classification Of Urban Environment Using High -Resolution Multispectral Image Data., Soe Win Myint Jan 2001

Wavelet Analysis And Classification Of Urban Environment Using High -Resolution Multispectral Image Data., Soe Win Myint

LSU Historical Dissertations and Theses

Attempts to analyze urban features and classify land use and land cover directly from high-resolution satellite data with traditional computer classification techniques have proven to be inefficient. The fundamental problem usually found in identifying urban land cover types from high-resolution satellite imagery is that urban areas are composed of diverse materials (metal, glass, concrete, asphalt, plastic, trees, soil, etc.). These materials, each of which may have completely different spectral characteristics, are combined in complex ways by human beings. Hence, each urban land cover type may contain several different objects with different reflectance values. Noisy appearance with lots of edges, and …


Studies Of Ultrathin Magnetic Films Using Synchrotron Radiation: Resonant Photoemission, Circular And Linear Magnetic Dichroism., Alexey Nikolaevich Koveshnikov Jan 2001

Studies Of Ultrathin Magnetic Films Using Synchrotron Radiation: Resonant Photoemission, Circular And Linear Magnetic Dichroism., Alexey Nikolaevich Koveshnikov

LSU Historical Dissertations and Theses

The work described in this dissertation is a study of the relationship between structural, electronic, and magnetic properties of ultrathin films of 3d-transition metals grown epitaxially on Cu substrate. The two systems that we have studied are films of fcc-Co on Cu(001) and Cu(111) and Fe and oxidized Fe films on Cu(001). Both systems are either employed or have potential applications in the data storage industry. In order to provide information on the inter-relationship between the electronic structure and magnetic properties, we present results of magnetic dichroism observed in photoemission from the valence-bands and the shallow 3p core levels of …


Breaking The Silence: Toward An Understanding Of Speaking Up In The Workplace., Sonya Fontenot Premeaux Jan 2001

Breaking The Silence: Toward An Understanding Of Speaking Up In The Workplace., Sonya Fontenot Premeaux

LSU Historical Dissertations and Theses

Although management scholars and practitioners emphasize the importance of employee input to organizational success, research suggests that many workers are hesitant to express an opinion or voice a view because they fear repercussions. In this dissertation, I focus on the issue of employee workplace expression, introducing the concept of speaking up. I define speaking up as "openly stating one's views or opinions about workplace issues." Speaking up is distinguished from several related concepts that fall within a common construct space. Drawing on expectancy theory (Vroom, 1964) and the theory of planned behavior (Ajzen, 1988, 1991), I explain the process believed …


Understanding The Connections Between High-Stakes Test Consequences And School Literacy Experiences., Deborah Karen Setliff Jan 2001

Understanding The Connections Between High-Stakes Test Consequences And School Literacy Experiences., Deborah Karen Setliff

LSU Historical Dissertations and Theses

The purpose of this ethnographic study was to connect the remedial summer school experiences of two fourth-grade students and four fifth-grade students with their school literacy experiences the following year. Understanding the students' experiences and connecting the experiences with school personnel provided a link between the students' and school personnel's perceptions of high-stakes testing consequences. Bridging these perceptions through cross-case analysis revealed the physical, emotional, and philosophical effects high-stakes testing is having on the students, school administrators, classroom teachers, and reading curriculum and instruction at the two elementary schools studied. Integrating the findings at the two schools helped develop a …


Mapping By Cooperative Mobile Robots., Thomas Oliver Smailus Jan 2001

Mapping By Cooperative Mobile Robots., Thomas Oliver Smailus

LSU Historical Dissertations and Theses

Constructing a system of intelligent robotic mapping agents that can function in an unstructured and unknown environment is a challenging task. With the exploration of our solar system as well as our own planet requiring more robust mapping agents, and with the drastic drop in the price of technology versus the gains in performance, robotic mapping is becoming a focus of research like never before. Efforts are underway to send mobile robots to map bodies within our solar system. While much of the research in robotic map construction has been focused on building maps used by the robotic agents themselves, …


Estimation Of Oceanic Surface Velocity Vector Fields Using Multiresolution., Guillermo Tonsmann Jan 2001

Estimation Of Oceanic Surface Velocity Vector Fields Using Multiresolution., Guillermo Tonsmann

LSU Historical Dissertations and Theses

This dissertation presents a new method for the estimation of oceanic surface velocity vector fields using multiresolution. Multiresolution is the ability to analyze a signal at various levels of resolution. In this dissertation, wavelet analysis is used to obtain multiresolution. This method requires the use of two sea surface temperature (SST) images of the same region taken within a known time interval. Wavelet analysis is performed in both images to reveal their components at decreasing resolution levels. The comparison of these components at each level yields vector fields representing local displacements of features within the images. These vector fields are …


William Albright's Sonata For Alto Saxophone And Piano: Analytical Insights And Performance Considerations., Brian Russell Utley Jan 2001

William Albright's Sonata For Alto Saxophone And Piano: Analytical Insights And Performance Considerations., Brian Russell Utley

LSU Historical Dissertations and Theses

William Albright's Sonata for Alto Saxophone and Piano amply demonstrates the stylistic eclecticism for which he is famous. The four movements exhibit distinct characters and musical languages, including references to compositional practices of the past, as in the two-part invention of the first movement and the follia of the second, and allusions to American popular music, as in the bebop sections of the finale. This polystylistic compositional approach also invites a variety of analytical techniques, including investigation into form, motivic development, register, texture, and pitch usage. This study, the first of its kind on Albright's sonata, examines these characteristics in …


Metal Partitioning Among Tissues And Exoskeleton Of Palaemonetes Pugio And Its Role In Depuration And Trophic Transfer., Kristen Annette Keteles Jan 2001

Metal Partitioning Among Tissues And Exoskeleton Of Palaemonetes Pugio And Its Role In Depuration And Trophic Transfer., Kristen Annette Keteles

LSU Historical Dissertations and Theses

The objective of this dissertation was to determine the partitioning of Cu, Zn and Cd between tissues and exoskeleton of the grass shrimp, Palaemonetes pugio Holthius, and to examine the consequences of this association. The role of the exoskeleton in the potential for depuration of metals through ecdysis was examined first. The portion eliminated with the exuviae varied for each metal; 11% Cu, 18% Zn, and 26% Cd of the total intermolt body burden was associated with exuviae. Some fraction of Cu and Cd in the exoskeleton was likely reabsorbed before molting but excess Zn was likely depurated through excretion. …


Synthesis Of Water-Soluble Quaternary Ammonium Chitosan Derivatives And Their Potential Applications As Biocides., Dewayne Logan Jan 2001

Synthesis Of Water-Soluble Quaternary Ammonium Chitosan Derivatives And Their Potential Applications As Biocides., Dewayne Logan

LSU Historical Dissertations and Theses

Chitosan is a polysaccharide obtained by deacetylating chitin, the major constituent of the exoskeleton of crustaceans. The driving force in the development of new applications for chitosan is not only is it naturally abundant, but it is non-toxic and biodegradable. It can be used as a chelating agent, coagulating agent, and flocculant. It has also been used to reduce blood cholesterol and as a dietary supplement. Chitosan derivatives have been synthesized for cosmetic applications and have been reported to exhibit antimicrobial activity. Further investigation of this potential activity is warranted due to increased antibiotic resistance. The focus of this work …


Navigating Knowing/Complicating Truth: African American Learners Experiencing Oral History As Real Education., Lavada Taylor Brandon Jan 2001

Navigating Knowing/Complicating Truth: African American Learners Experiencing Oral History As Real Education., Lavada Taylor Brandon

LSU Historical Dissertations and Theses

Dominant explanations for why urban African American learners dropout is that these students are "at-risk" (Swanson, 1991; Sartain,1989; Levine, 1988; Macchiarola, 1988). Such explanations blame the victim while exonerating the role schooling plays in shaping students' "at-risk" conditions (Woodson, 1933/1998; Tatum, 1997; Freire, 1970/1997; Shujaa, 1994; Gordon, 1993). This research contests these explanations for why African American learners dropout by centering 10 African American students' voices to highlight the role curriculum plays at casting them at-risk. Consequently, this work shifts reproach from individual students' home environments to the larger structural dimensions of curricula (what we know) and instruction (how we …


Spatial Variability And Isotopic Studies Of The Prairie -Forest Transition Soil In Louisiana., Asfaw Bekele Jan 2001

Spatial Variability And Isotopic Studies Of The Prairie -Forest Transition Soil In Louisiana., Asfaw Bekele

LSU Historical Dissertations and Theses

The calcareous prairies of Louisiana are among the most endangered ecosystems in North America. The major threat to this ecosystem is the invasion by woody and herbaceous plants, primarily eastern red cedar (Juniperus virginiana ). The restoration and management of these rare plant communities require a thorough understanding of the soils supporting them. Geostatistical, fractal, and stable isotopic procedures were integrated to study the soil and vegetation spatial variability. The prairie soil was alkaline, the forest soil was acidic, and the transition soil was neutral. The spherical model described the spatial variability of virtually all the soil properties considered with …


The Influence Of An Active Postvention On The Length Of Time Elapsed Before Survivors Of Suicide Seek Treatment., Frank Ray Campbell Jan 2001

The Influence Of An Active Postvention On The Length Of Time Elapsed Before Survivors Of Suicide Seek Treatment., Frank Ray Campbell

LSU Historical Dissertations and Theses

Those who are significantly impacted by the death of someone to suicide are known as survivors of suicide. This study examined two groups of suicide survivors, one group received an active postvention model (APM), and the other group received no active postvention model. The study utilized both t-test and chi-square to compare the groups based on key demographic characteristics. The study compared model of postvention (active versus passive) for the time elapsed between the suicide and the survivors seeking treatment. The two groups studied were survivors who sought treatment at a well established metropolitan crisis intervention center in the southern …