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Computer-Assisted Instruction: Enhancements For Language-Learning Applications., William Lawrence Harrell Jr Jan 1998

Computer-Assisted Instruction: Enhancements For Language-Learning Applications., William Lawrence Harrell Jr

LSU Historical Dissertations and Theses

Presently, computer-assisted instruction is in use in many educational venues. Unfortunately, the application of computer-assisted language learning at a distance has virtually been ignored. This is an opportunity that needs to be explored. In order to do so, a number of considerations must be attended to. First, effective monitor display design is critical for the optimal presentation of distance learning material. Second, gender and equity factors that impact computer use must be understood to minimize the detrimental effects they might have on computer-assisted distance learning. Third, the needs of students involved with the particularly-demanding application of distance learning principles of …

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Half Empty Or Half Full: Explaining Black Attitudes Toward Affirmative Action., Maruice Louis Mangum Jan 1998

Half Empty Or Half Full: Explaining Black Attitudes Toward Affirmative Action., Maruice Louis Mangum

LSU Historical Dissertations and Theses

Using the Black National Election Study series (1984, 1988, and 1996), I estimate black support for affirmative action. I develop models that capture the effects of self-interest (as reflected in socioeconomic and demographic characteristics, and perceptions of both racial threat and racial fairness) and symbolic politics attitudes (the core values of egalitarianism and individualism, political ideology, partisanship, and group consciousness). The method of choice is Ordinary Least Squares Estimation. An examination of the data shows that what drives black attitudes toward affirmative action are largely symbolic politics attitudes, not the effects of self-interest. Generally speaking, the theory of symbolic politics …

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School Desegregation From Brown To Fordice, 1954-1992: A Case Study In American Individualism., Albert Leon Samuels Jan 1998

School Desegregation From Brown To Fordice, 1954-1992: A Case Study In American Individualism., Albert Leon Samuels

LSU Historical Dissertations and Theses

In United States v. Fordice (1992), the Supreme Court declared that racially nondiscriminatory admissions and hiring policies alone failed to satisfy the state of Mississippi's "affirmative duty" to dismantle a previously de jure system of segregated higher education. However, the justices declined to define precisely what the state must do to satisfy its constitutional obligations, leaving in its wake a host of unresolved questions. Of particular concern to many African Americans is the fact that the future status of public black universities was left in the balance. Using a case study approach, this dissertation argues that higher education desegregation cannot …

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Vocational Education And Recidivism At The Louisiana Correctional Institute For Women., Henry Elbert Sanders Jr Jan 1998

Vocational Education And Recidivism At The Louisiana Correctional Institute For Women., Henry Elbert Sanders Jr

LSU Historical Dissertations and Theses

Recidivism is a phenomenon causing growing concern. When released criminals return to crime, the costs become immeasurable. Victims can never be adequately compensated for personal losses, and the nation cannot halt the spiraling costs of maintaining prisons housing mostly repeat offenders. The nation is spending upwards from 98 billion dollars on crime, annually. Public opinion opposes education for inmates, yet, with the nation's prisons operating near capacity, a millennium approaches that promises another wave of prison construction resulting in exponential leaps in the costs of incarceration. A marketing concept asserts that attracting people to a product is half the battle. …

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Early Fertilization Events In The Freshwater Zebra Mussel, Dreissena Polymorpha., Michael James Misamore Jan 1998

Early Fertilization Events In The Freshwater Zebra Mussel, Dreissena Polymorpha., Michael James Misamore

LSU Historical Dissertations and Theses

The morphological and functional mechanisms involved in the early fertilization events in the freshwater zebra mussel Dreissena polymorpha (Bivalvia:Veneroida:Dreissenidae) are presented. Mature adults release gametes in response to external applications of 5-hydroxytryptamine. Sperm retain a primitive morphology consisting of a head, midpiece and tail The head is approximately 1.6 $\mu$m in diameter and 4 $\mu$m in length. An acrosomal vesicle is highly compartmentalized with a central axial core containing actin. The midpiece is composed of 4 mitochondria and a pair of centrioles. A single flagellum is elaborated from the distal centriole. The eggs of D. polymorpha are 50-60 $\mu$m in …

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The Psychometric Characteristics Of The Adhd Rating Scale-Iv., George Walter Hebert Jan 1998

The Psychometric Characteristics Of The Adhd Rating Scale-Iv., George Walter Hebert

LSU Historical Dissertations and Theses

The ADHD Rating Scale-IV is a screening instrument designed to assess attention-deficit/hyperactivity disorder in children. It is comprised of 18 items and has both a home and school version for parents and teachers to complete, respectively. A sample consisting of 178 parent-teacher dyads of children aged 6-12 years of age participated in the study. Psychometric investigation of these scales revealed high internal consistency, adequate test-retest reliability, and appropriate correlations with other measures of ADHD. Principal components factor analysis revealed two factors for both scales: (1) Inattention-hyperactivity and (2) Impulsivity-hyperactivity. Discriminant function analyses and base rate analyses revealed that these scales …

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An Examination Of Adult Learners, Learning Outcomes, And Selected Learning Environments At A Land-Grant Research I University., Anne L. Zoeller Jan 1998

An Examination Of Adult Learners, Learning Outcomes, And Selected Learning Environments At A Land-Grant Research I University., Anne L. Zoeller

LSU Historical Dissertations and Theses

Population projections predicting dramatic increases in demand for higher education, and the explosive increase in technologies which may be essential to meet demand, are motivating changes in the culture of higher education. The purpose of this study was to describe characteristics of courses offered and learners served by the Louisiana State University Evening School in different learning environments; and to compare characteristics of learners enrolled in the course by the medium through which the course was delivered (defined as on-campus, telecourse, and off-campus). Data were collected from institutional records, course and instructor evaluations, and from the course syllabi provided by …

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Media Priming In The 1980 Presidential Election., Gina Leigh Corell Jan 1998

Media Priming In The 1980 Presidential Election., Gina Leigh Corell

LSU Historical Dissertations and Theses

This study will focus on a specific election, the 1980 presidential race. Through an examination of the media coverage, key issues, and the candidates, this research will provide a context for the statistical analysis that follows. This research explores the impact of media and other determinants of candidate assessment and vote choice. The findings in this study not only support the argument that news affects elections but also clarify the exact nature of that influence. The research uses the theory of priming as its theoretical base. The American National Election Study Survey for the 1980 presidential election is the data …

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Questions About Behavioral Function (Qabf): A Behavioral Checklist For Functional Assessment Of Aberrant Behavior., Theodosia Renata Paclawskyj Jan 1998

Questions About Behavioral Function (Qabf): A Behavioral Checklist For Functional Assessment Of Aberrant Behavior., Theodosia Renata Paclawskyj

LSU Historical Dissertations and Theses

Functional assessment is a tool in behavior therapy used to identify the functional relationships between a behavior of interest and the individual's environment. A functional assessment identifies variables that both occasion and maintain a particular behavior. Traditional functional assessment methodologies have relied on experimental techniques in which analog sessions are designed to mimic situations in the individual's environment. However, these techniques are time-consuming, require extensive training, and rely on the availability of numerous resources in the individual's setting. Development of a brief functional assessment checklist would circumvent these difficulties and make a significant contribution to applied behavioral psychology. The proposed …

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The Effect Of Participation In The Occupational Safety And Health Administration's Voluntary Protection Programs On Injury/Illness Rates., Linda Diane Weems Jan 1998

The Effect Of Participation In The Occupational Safety And Health Administration's Voluntary Protection Programs On Injury/Illness Rates., Linda Diane Weems

LSU Historical Dissertations and Theses

The purpose of this study was to determine the effect participation in the Occupational Safety and Health Administration's (OSHA) Voluntary Protection Programs (VPP) has on injury/illness rates (IIR). Data was obtained from OSHA's Office of Cooperative Programs for the companies participating in the VPP for the years 1983 through 1997. This data was summarized and analyzed to satisfy this study's objectives. Objective 1 was to describe and compare the companies participating in OSHA's VPP and their IIR with the average IIR reported by the Bureau of Labor Statistics (BLS) for the industries for each year of the program's existence from …

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Compilation Techniques For Out-Of-Core Parallel Computations, M. Kandemir, A. Choudhary, J. Ramanujam, R. Bordawekar Jan 1998

Compilation Techniques For Out-Of-Core Parallel Computations, M. Kandemir, A. Choudhary, J. Ramanujam, R. Bordawekar

Faculty Publications

The difficulty of handling out-of-core data limits the performance of supercomputers as well as the potential of the parallel machines. Since writing an efficient out-of-core version of a program is a difficult task and virtual memory systems do not perform well on scientific computations, we believe that there is a clear need for compiler directed explicit I/O approach for out-of-core computations. In this paper, we first present an out-of-core compilation strategy based on a disk storage abstraction. Then, we offer a compiler algorithm to optimize locality of disk accesses in out-of-core codes by choosing a good combination of file layouts …

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Processing Of Value-Added Textile And Geotextile Products From Sugarcane And Kenaf., Ovidiu Romanoschi Jan 1998

Processing Of Value-Added Textile And Geotextile Products From Sugarcane And Kenaf., Ovidiu Romanoschi

LSU Historical Dissertations and Theses

Utilization of agricultural crops as alternate raw materials for many industries was investigated for both sugar cane and kenaf. Value-added products with textile and geotextile applicabilities were developed and their properties assessed in direct correlation with their final use. Bundles of fibers were extracted from the rind of sugar cane in three distinct steps: mechanical separation (using a Tilby separator), chemical extraction, and steam explosion. The process of fiber extraction was optimized for an atmospheric pressure alkali delignification, taking into account different factors such as: alkali concentration, reaction time, mixing, and steam explosion. Statistical techniques were used to study the …

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Ultrafast Studies Of Reaction Dynamics., Zhenguo Feng Jan 1998

Ultrafast Studies Of Reaction Dynamics., Zhenguo Feng

LSU Historical Dissertations and Theses

The long range goal of this research is to understand the role of the solvent in condensed phase reactions. In the gas phase, great strides have been made towards understanding chemical reactivity at the level of individual quantum states. Liquid state reactions are not as well understood due to complicated many-body interactions with the solvent. Our approach has been to study simple reactions in solvents near their critical state. Here a small change in pressure, at constant temperature, allows a continuous change in solvent bulk density and viscosity, from near-liquid to gas-like properties. In this way reactions can be studied …

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Louisiana Agriculture Magazine, Fall 1997, Lsu Agricultural Experiment Station Oct 1997

Louisiana Agriculture Magazine, Fall 1997, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Louisiana Agriculture Magazine, Summer 1997, Lsu Agricultural Experiment Station Jul 1997

Louisiana Agriculture Magazine, Summer 1997, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Louisiana Agriculture Magazine, Spring 1997, Lsu Agricultural Experiment Station Apr 1997

Louisiana Agriculture Magazine, Spring 1997, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Substitutions At Position 146 Of Cytochrome B Affect Drastically The Properties Of Heme B(L) And The Q(O) Site Of Rhodobacter Capsulatus Cytochrome Bc1 Complex, A. Sami Saribaş, Huangen Ding, P. Leslie Dutton, Fevzi Daldal Mar 1997

Substitutions At Position 146 Of Cytochrome B Affect Drastically The Properties Of Heme B(L) And The Q(O) Site Of Rhodobacter Capsulatus Cytochrome Bc1 Complex, A. Sami Saribaş, Huangen Ding, P. Leslie Dutton, Fevzi Daldal

Faculty Publications

The cytochrome (cyt) b subunit of ubihydroquinone: cytochrome c oxidoreductase(bc1 complex) contains four invariant glycine (G) residues proposed to be essential for proper packing of the high and low potential (b(H) and b(L)) hemes of the bc1 complex. One of these residues, G146 located in the transmembrane helix C of cyt b of Rhodobacter capsulatus, was substituted with A and V using site-directed mutagenesis, and the effects of these substitutions on the properties of the ubiquinone oxidation (Q(o)) site and heme b(L) of the bc1 complex were analyzed. The mutants G146A and V produced properly assembled but catalytically defective bc1 …

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Family Context And Premarital Sexual Activity In Kinshasa, Zaire., Yanyi Kasongo Djamba Jan 1997

Family Context And Premarital Sexual Activity In Kinshasa, Zaire., Yanyi Kasongo Djamba

LSU Historical Dissertations and Theses

Studies on sexual behavior in Africa have shown that the proportion of women with premarital sexual experience is high, but the factors associated with premarital sexual behavior have not been clearly identified. This is partly due to the separation between theory and research. This study attempts to fill this gap by constructing a new conceptual framework in which hypotheses of rational adaptation, social disorganization, and patrilineal bias theories can be empirically tested. Based on a life history approach, the present framework emphasizes the role of three dimensions of family background in shaping individual behavior: financial capital, human capital, and social …

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Academic Misconduct: Methods Of Influencing Undergraduates' Perceptions Of The Seriousness And Frequency Of Cheating., Betty Diane Baugh Sistrunk Jan 1997

Academic Misconduct: Methods Of Influencing Undergraduates' Perceptions Of The Seriousness And Frequency Of Cheating., Betty Diane Baugh Sistrunk

LSU Historical Dissertations and Theses

Academic misconduct is a problem that all institutions of higher education experience. Because few incidents are worthy of national attention, the media create the impression that cheating is rare. The truth is that, depending on the source, up to 75% of college students admit having cheated on exams, papers, and other academic activities. One approach to promoting ethical behavior on campus is a framework based on student development theories. William Kibler of Texas A&M University has created a comprehensive program which includes intervention strategies designed to promote an ethos that nurtures academic integrity. Two components in this plan are a …

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Peroxynitrite Mediated Oxidations: Spin Trap Studies; Nitration And Hydroxylation Of Phenol Result From Different Intermediates; Co(2) Catalyzes The Decomposition Of Peroxynitrite., Jean-Noel Lemercier Jan 1997

Peroxynitrite Mediated Oxidations: Spin Trap Studies; Nitration And Hydroxylation Of Phenol Result From Different Intermediates; Co(2) Catalyzes The Decomposition Of Peroxynitrite., Jean-Noel Lemercier

LSU Historical Dissertations and Theses

In the first project the spin trap DMPO was used to probe for the production of hydroxyl radicals from peroxynitrite. Peroxynitrite reacts with DMPO to give $\sp\cdot$DMPO-OH, suggesting that $\sp\cdot$DMPO-OH results from a reaction between DMPO and HOONO or between DMPO and an activated intermediate of HOONO. Thiols produce a large increase in the $\sp\cdot$DMPO-OH signal intensity. Experiments employing SOD suggest that this increase results from the decomposition of $\sp\cdot$DMPO-OOH. These results are incompatible with the decomposition of peroxynitrite to form $\sp\cdot$OH but suggest that an intermediate of HOONO is produced that is less reactive and more selective than the …

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Synthesis And Photophysical Characterization Of Near-Ir Probes For Bioanalytical Applications., James Henry Flanagan Jr Jan 1997

Synthesis And Photophysical Characterization Of Near-Ir Probes For Bioanalytical Applications., James Henry Flanagan Jr

LSU Historical Dissertations and Theses

The research presented in this dissertation involves the synthesis and photophysical characterization of a series of tricarbocyanine dyes which can be used as fluorescent labels for bioanalytical applications. All of these dyes were synthesized to contain a heavy-atom modification to enhance k$\sb{\rm isc}$ through spin-orbit coupling and a functional group (isothiocyanate or succinimidyl ester) which is reactive towards primary amines. The spectroscopic characterization of the various chromophores was examined using absorbance and fluorescence measurements, time-correlated fluorescence, and flash photolysis. The dyes exhibit absorbance and fluorescence maxima in the near-IR (750-810 nm) with large $\varepsilon$ ($\sim$200,000 M$\sp{-1}$cm$\sp{-1})$ and $\Phi\sb{\rm f}\sim0.05$-0.15. Dyes …

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Tribological Behavior Of Duplex Nitrogen Diffusion/Dlc Coating Treatments., Yan Liu Jan 1997

Tribological Behavior Of Duplex Nitrogen Diffusion/Dlc Coating Treatments., Yan Liu

LSU Historical Dissertations and Theses

Diamond-like carbon (DLC) coatings have high potential for developing advanced tribological systems and the overall objective of the present research is to provide a framework to theoretically design and experimentally develop and study such systems of interest. The present research concentrates on the following specific aspects: the fundamental wear mechanism of DLC coatings; finite element (FE) modeling to understand the stress distribution in coating/substrate system under indentation and friction; and the influence of graded interface on the tribological behavior of DLC coatings. The experimental results showed that DLC films possess low friction coefficient ($f\sb{init}$: 0.12-0.20, $f\sb{fin}$: 0.06-0.08) and low wear …

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Determination Of Hydrocarbon Type From The Dual-Spaced Neutron Tool Responses., Luis Fernando Quintero Jan 1997

Determination Of Hydrocarbon Type From The Dual-Spaced Neutron Tool Responses., Luis Fernando Quintero

LSU Historical Dissertations and Theses

A new interpretation method that allows for the determination of the fluid type present in a formation of interest was developed. The new method is referred to as the "Three Neutron Porosity Log". The method is based on an algorithm that determines three apparent neutron porosities. These porosities, derived from the raw counts of the dual-spaced neutron tool, have three different radii of investigation. All three neutron porosities, near, far, and ratio, when properly calibrated read the true porosity in water-bearing zones. In oil or gas-bearing zones the mud filtrate invasion profile will cause the three apparent neutron porosities to …

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Traffic Management And Congestion Control In The Atm Network Model., Sundararajan Vedantham Jan 1997

Traffic Management And Congestion Control In The Atm Network Model., Sundararajan Vedantham

LSU Historical Dissertations and Theses

Asynchronous Transfer Mode (ATM) networking technology has been chosen by the International Telegraph and Telephony Consultative Committee (CCITT) for use on future local as well as wide area networks to handle traffic types of a wide range. It is a cell based network architecture that resembles circuit switched networks, providing Quality of Service (QoS) guarantees not normally found on data networks. Although the specifications for the architecture have been continuously evolving, traffic congestion management techniques for ATM networks have not been very well defined yet. This thesis studies the traffic management problem in detail, provides some theoretical understanding and presents …

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The Polysaccharide Capsule Of Vibrio Vulnificus: Virulence, Transposon Mutagenesis, And The Identification Of An Essential Gene., Amy Buscher Zuppardo Jan 1997

The Polysaccharide Capsule Of Vibrio Vulnificus: Virulence, Transposon Mutagenesis, And The Identification Of An Essential Gene., Amy Buscher Zuppardo

LSU Historical Dissertations and Theses

The extracellular capsule polysaccharide (CPS) of Vibrio vulnificus is a primary virulence factor which allows survival of the bacteria in the human host. To study the genes involved in the production of the polysaccharide capsule, 23 mutants were generated that lost their ability to produce CPS due to the insertion of a mini-transposon into the genome of the encapsulated clinical strain V. vulnificus 1003 (O). The mutants were examined by Southern blot analysis to ensure the transposon had inserted only once in the chromosome. Exoenzymes, which are believed to contribute to the virulence of the organism, produced by all 23 …

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Changing Tastes: Purchase Choice In Urban China., Ann Mcconnell Veeck Jan 1997

Changing Tastes: Purchase Choice In Urban China., Ann Mcconnell Veeck

LSU Historical Dissertations and Theses

Food purchase options have expanded greatly in urban areas in the People's Republic of China as a result of recent market reforms. Still, given the influences sociocultural factors, the restructuring of food consumption in China need not be expected to follow patterns observed in the West. This investigation of food purchase behavior was based on a ten-month period of field study in Nanjing, China. The adoption of time related food purchase behaviors was studied, including use of processed food, restaurant use, and frequency of food shopping trips. Food consumption habits were investigated in the context of how these patterns contribute …

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Studies Of The Morphology And Dynamics Of Flame-Generated Agglomerates Using Dynamic Light Scattering., Glenn Michael Waguespack Jan 1997

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 …

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Characterization Of Bean Eukaryotic Translation Initiation Factor 5: Cloning, Sequencing, And Structure-Function Studies., Zelpha Elizabeth Floyd Jan 1997

Characterization Of Bean Eukaryotic Translation Initiation Factor 5: Cloning, Sequencing, And Structure-Function Studies., Zelpha Elizabeth Floyd

LSU Historical Dissertations and Theses

Translation initiation is emerging as one of the important mechanisms involved in regulation of gene expression and our understanding of this process in eukaryotes has greatly increased over the past twenty years. Research in translation initiation in plants has lagged behind efforts in the mammalian system and a number of the initiation factors have not been characterized. Eukaryotic initiation factor 5 (eIF5), the protein mediating hydrolysis of the eIF2-bound GTP and the subsequent formation of the 80S ribosome, is among the least characterized initiation factor in plants. This dissertation describes the cloning of the cDNA encoding eIF5 from a bean …

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Self-Schemata For Sport And Physical Activity: The Influence Of Race And Gender., Louis Harrison Jr Jan 1997

Self-Schemata For Sport And Physical Activity: The Influence Of Race And Gender., Louis Harrison Jr

LSU Historical Dissertations and Theses

The most recent Surgeon General's report underscores the need for increased levels of regular physical activity in the general population, and in women and minorities in particular. Variations in participation patterns in particular sports and physical activities may provide insight into the reasons for differing activity levels in women and minorities. The present investigation studied the influence of race and gender on activity choices by regarding specific sport and physical activities as self-defining for race and gender groups. Study 1 was designed to confirm the existence of self-schemata for sport and physical activities. A computer generated instrument was employed to …

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Identification Of The Physiological Role Of Carbonic Anhydrase Using The Antisense Technique, And, Investigation Of Its Transcriptional Regulation In Arabidopsis Thaliana (L.) Heynh., Hee Jin Kim Jan 1997

Identification Of The Physiological Role Of Carbonic Anhydrase Using The Antisense Technique, And, Investigation Of Its Transcriptional Regulation In Arabidopsis Thaliana (L.) Heynh., Hee Jin Kim

LSU Historical Dissertations and Theses

Carbonic anhydrase (CA, EC 4.2.1.1), catalyzes the interconversion of CO$\sb2$ and $\rm HCO\sb3\sp-$ in many organisms. The majority of CA activity in C3 leaves is in the chloroplast and expression of the chloroplast CA is regulated by light. To investigate the physiological role of the chloroplast CA, its expression was suppressed by insertion of a CA transgene in the antisense orientation in Arabidopsis thaliana (L.) Heynhold. Activity assays and immunoblots show that in five independent lines of antisense transgenic plants CA activity was strongly suppressed. All five independent lines died or grew poorly in the absence of sucrose whereas wild …

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