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Evaluating Acrosome Interference Contrast Reaction Steps With Brightfield And Differential Microscopy Techniques, H. C. Steinholt, J. E. Chandler, V. Tirado Jan 1991

Evaluating Acrosome Interference Contrast Reaction Steps With Brightfield And Differential Microscopy Techniques, H. C. Steinholt, J. E. Chandler, V. Tirado

Faculty Publications

Acrosomal integrity of bovine spermatozoa was evaluated using naphthol yellow S-erythrosine B stain with bright field microscopy, .2% glutaraldehyde fixation with Nomarski optics, and live wet smears with Nomarski optics to compare the evaluation techniques. Four ejaculates per two Holstein bulls were enriched through a Percoll gradient, capacitated with heparin, and acrosome-reacted with lysophosphatidylcholine to prepare spermatozoa for in vitro fertilization. Spermatozoa samples were taken after each preparatory step, and percentage of intact acrosomes was evaluated with the stain, .2% glutaraldehyde, and live wet smear. Acrosomal integrity decreased with each preparatory step across all techniques. The decrease in integrity from …

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Threshold Photodetachment Of H-, K. R. Lykke, K. K. Murray, W. C. Lineberger Jan 1991

Threshold Photodetachment Of H-, K. R. Lykke, K. K. Murray, W. C. Lineberger

Faculty Publications

The electron affinities of atomic hydrogen and deuterium have been determined by tunable-laser threshold-photodetachment spectroscopy: the electron affinities of H (F=0) and D (F=1/2) are 6082.990.15 and 6086.20.6 cm-1, respectively. The value for H is a 20-fold improvement over previous experimental determinations. © 1991 The American Physical Society.

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Individual And Work-Related Variables Contributing To Hospital Nurses' Participation Or Non-Participation In Available Clinical Career Ladder Programs., Sarah Kay Alford Thornhill Jan 1991

Individual And Work-Related Variables Contributing To Hospital Nurses' Participation Or Non-Participation In Available Clinical Career Ladder Programs., Sarah Kay Alford Thornhill

LSU Historical Dissertations and Theses

One solution to overcome the shortage of hospital nurses is to establish and implement clinical career ladder programs. The purpose of this study was to examine hospital clinical nurses' perceptions of ladder programs as a job enrichment strategy and to determine individual and work-related variables contributing most to nurses' participation or nonparticipation in available clinical ladder programs. A random sample of 600 clinical nurses employed full time in five regional medical center hospitals located in Louisiana and Mississippi were the study subjects. Respondents were 106 (88.3%) of the 120 ladder program participants and 385 (80.2%) of the 480 nonparticipant nurses. …

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Remedial English Ten Years After: Former Basic Writers In The Workplace., Eleanor Agnew Jan 1991

Remedial English Ten Years After: Former Basic Writers In The Workplace., Eleanor Agnew

LSU Historical Dissertations and Theses

The purpose of this study was to find out whether writing skills were a handicap to job success for former basic writers who had graduated from college. A population of 197 former basic writers (FBW's) and 68 former strong writers (FSW's, used as a comparison) were surveyed and interviewed. Research questions included (1) What types of jobs do FBW's have, compared to FSW's, and how much do their feelings about writing affect their choices of major or job? (2) How much and how often do FBW's write at work compared to FSW's? (3) What forms of writing do FBW's do …

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Implicit Vs Explicit Mood Congruent Memory Bias In Depression., Philip Charles Watkins Jan 1991

Implicit Vs Explicit Mood Congruent Memory Bias In Depression., Philip Charles Watkins

LSU Historical Dissertations and Theses

Mood congruent memory (MCM) in depressed individuals, tends to be biased toward memories consistent with their mood, i.e. negative or unpleasant memories. Although MCM is a robust finding, the large majority of studies have used free-recall paradigms, and that methodology does little to delineate the cognitive mechanisms determining MCM. This study was designed to investigate whether MCM bias is a function of implicit or explicit memory. Implicit memory is taken as a measure of the organization or strength of association of the aspects of a memory representation, whereas explicit memory also taps elaboration that may involve control procedures such as …

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Dynamic Random Coefficient Regression Model For Electricity Demand: The Small Sample Case., Susan Mu-Lan Zee Jan 1991

Dynamic Random Coefficient Regression Model For Electricity Demand: The Small Sample Case., Susan Mu-Lan Zee

LSU Historical Dissertations and Theses

This paper develops a dynamic random coefficient regression model for electricity demand. Six estimation procedures are proposed for the model. An empirical study of the comparative performance of these six estimators is presented. In addition, a Monte Carlo simulation study is reported where we examine the small sample properties of the distributions of the coefficients and observe the behavior of the estimators as the sample size increases.

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Cooperation In The Liberalization Of Soviet-Western Trade? A Transaction-Cost Analysis Of Soviet Joint Ventures With The West., Elza Perry Ballard Jan 1991

Cooperation In The Liberalization Of Soviet-Western Trade? A Transaction-Cost Analysis Of Soviet Joint Ventures With The West., Elza Perry Ballard

LSU Historical Dissertations and Theses

This study employs the method of transaction-cost analysis--the price of doing business between economic and political agents--to the study of Soviet-Western political economy (particularly Soviet joint ventures with the West). Its purpose is to determine: (1) if Soviet foreign economic policy in the Gorbachev era has reduced the transaction costs to Western firms engaging in joint ventures with the Soviet Union when compared to previous Western business options (e.g., co-production, licensing, turn-key projects), and (2) if the reduction is sufficient to encourage joint ventures to become a mechanism of greater cooperation and liberalization in Soviet-Western political economy and the international …

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Implied Volatility And Risk Preference From Option Prices., Kenneth Steven Bartunek Jan 1991

Implied Volatility And Risk Preference From Option Prices., Kenneth Steven Bartunek

LSU Historical Dissertations and Theses

This dissertation consists of two empirical studies on options. In the first study, an estimate of the constant proportional risk aversion parameter is implied from the equivalent martingale measure framework. Within this framework, we use call options as opposed to the traditional consumption data to imply our estimate. We compare forecasts of volatility for the asset underlying an option in the second study. Three methods have been used to forecast volatility in the past. These are an historical estimate, an estimate implied from the Black-Scholes European call option pricing model, and an estimate based on generalized autoregressive conditional heteroscedasticity. The …

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An Ethnographic Investigation Of The Integration Of Disabled And Nondisabled Two-Year-Old Children., Mary Beth Armstrong Jan 1991

An Ethnographic Investigation Of The Integration Of Disabled And Nondisabled Two-Year-Old Children., Mary Beth Armstrong

LSU Historical Dissertations and Theses

This study is an ethnographic investigation of the initial integration of a group of disabled and nondisabled two-year-old children. The group was comprised of a class of seven disabled children from a school parish and a class of nine nondisabled children from a university child development center in this same parish. This study incorporated ethnographic data collection and analysis procedures. Data collection procedures included participant observation, ethnographic interviews, artifactual analysis, and videorecording. The results of this study suggest that a process of stigmatization occurred in this integration program. The process of stigmatization and factors perhaps accounting for the process are …

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Self And Power: Political Reconstruction In The Drama Of Christopher Marlowe., Patricia A. Brown Jan 1991

Self And Power: Political Reconstruction In The Drama Of Christopher Marlowe., Patricia A. Brown

LSU Historical Dissertations and Theses

Christopher Marlowe created Renaissance drama as we think of it today. Marlowe's princely protagonists are studied here not as sovereigns responsible for the general well-being of their subjects, but as ambitious characters who use power to control their personal environment. Seen from this viewpoint, the dramatic function of the central characters is either to develop a new stance toward the idea of public authority or to refashion an old one. Instead of attending to governance, they attempt to encompass all existence within themselves: Tamburlaine the world conqueror; Edward and Dido, public rulers whose private relationships transform their public positions; the …

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Development Of An Advanced Thermospray Interfaced Hplc-Aas System For Speciation Studies Of Cadmium Species Excreted From Human Body Fluids: Interaction Between Metallothionein Cadmium And Zinc., Peter Ping Chang Jan 1991

Development Of An Advanced Thermospray Interfaced Hplc-Aas System For Speciation Studies Of Cadmium Species Excreted From Human Body Fluids: Interaction Between Metallothionein Cadmium And Zinc., Peter Ping Chang

LSU Historical Dissertations and Theses

A new technique has been developed to reveal different metal species at very low concentrations (lower ppb level) in human body fluids. Using this technique it was determined that urine contained many different species of cadmium and that perspiration contained many other species of cadmium. This indicated that there were two avenues for the elimination of cadmium from the body. Quantitative data showed that much more cadmium was eliminated through perspiration than urine and that the biological half life of cadmium in the body was less than 1.5 years--not 20-30 years as currently believed. Further, in vitro experiments showed that …

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Prediction Of Sugarcane Cross Potential At Early Selection Stages., Yih-Shiow Chang Jan 1991

Prediction Of Sugarcane Cross Potential At Early Selection Stages., Yih-Shiow Chang

LSU Historical Dissertations and Theses

The primary goal of this study was to develop a faster sugarcane cross appraisal method. The effect of intrarow plant spacing on trait variability was also investigated. The study evaluated 1800 progeny from 15 crosses among 23 parents at two intrarow plant spacings in 1989 and 1990. Data were collected on plant cane (PC) and first ratoon (FR) single stool seedlings, and first clonal (FC) plots. The family mean, the normal probability of an elite proportion (PROB), the observed elite proportion, and the best linear unbiased predictors (BLUPs) were estimated for each trait. The calculated statistics were strongly correlated within …

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A Multivariate Analysis Of Voter Turnout In Louisiana Contested Nonpartisan Judicial Elections, 1981-1988., Olethia Davis Jan 1991

A Multivariate Analysis Of Voter Turnout In Louisiana Contested Nonpartisan Judicial Elections, 1981-1988., Olethia Davis

LSU Historical Dissertations and Theses

The purpose of this dissertation is to determine what factors account for variations in voter turnout in Louisiana contested nonpartisan trial and intermediate appellate court elections. The central questions to be addressed are: (1) what is the precise relationship between incumbency or prior judicial experience, campaign spending, and the race of judicial candidates, ceteris paribus (with all else remaining the same), on electoral participation in judicial elections in the State of Louisiana from 1981 to 1988 and (2) is the electorate that participates in judicial elections typical or atypical of the electorate that participates in presidential general races in terms …

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A Syntactic Language Computer Analysis Of Depressed Versus Non-Depressed Females., Daniel Merton Christy Jan 1991

A Syntactic Language Computer Analysis Of Depressed Versus Non-Depressed Females., Daniel Merton Christy

LSU Historical Dissertations and Theses

This study sought to examine the interrelationship of cognition and language in the clinical syndrome of depression. It was proposed that the types of cognitive differences in depression proposed by Beck and other cognitive theorists would be reflected in language usage, and especially in syntax. Using the Beck Depression Inventory (BDI), subjects were classified as either depressed (BDI $\geq$ 16) or non-depressed (BDI $\leq$ 4). Subjects were asked to speak into a tape recorder for 3-5 minutes on each of three stimuli, a positive event, a negative event, and a neutral opinion stimulus. The language samples were then analyzed using …

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A Neural Network Truth Maintenance System., Suresh Guddanti Jan 1991

A Neural Network Truth Maintenance System., Suresh Guddanti

LSU Historical Dissertations and Theses

A novel approach using Neural Networks has been developed to generate consistent labelling of facts in relation to a given set of rules. In the proposed system, facts are represented by neurons and their interconnections form the knowledge base. The Neural Network Truth Maintenance System(TMS) arrives at a valid solution provided the solution exists. A valid solution is a consistent labelling of facts. If a valid solution does not exist the network does not converge. An experimental setup was built and tested using conventional integrated circuits. The hardware design is suitable for VLSI implementation for large, real-time problems. The TMS …

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The Introduction Into Tobacco Plants Of Genes Which Encode Some Of The Natural Components Of The Humoral Immune Response Of Hyalophora Cecropia., Luis Julio Cesar Destefano Beltran Jan 1991

The Introduction Into Tobacco Plants Of Genes Which Encode Some Of The Natural Components Of The Humoral Immune Response Of Hyalophora Cecropia., Luis Julio Cesar Destefano Beltran

LSU Historical Dissertations and Theses

A number of plant pathogenic bacteria has been shown to be highly sensitive to SB-37, a derivative of cecropin B (one of the three cecropins from the giant silk moth Hyalophora cecropia). The lytic activity exhibited by SB-37 has been shown to increase up to twenty-fold in the presence of chicken egg white lysozyme. The cDNAs genes encoding SB-37, attacin E (another component of the humoral response of Hyalophora cecropia), and chicken lysozyme have been introduced into tobacco (var Xanthi) and potato (a new cultivar 86007) plants by Agrobacterium-mediated transformation using co-integrate and binary vectors. The genes were placed under …

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School Administration As Brinkmanship., Eddy A. Haynes Jan 1991

School Administration As Brinkmanship., Eddy A. Haynes

LSU Historical Dissertations and Theses

Students, teachers, and principals sometimes test the boundaries set by the system in which they work, often with the goal of adapting to their circumstances while avoiding punishment. This type of behavior, called brinkmanship, was defined by Licata and Willower (1975) in terms of subordinate challenges to an educational organization's authority system that avoid negative sanctions. Principal brinkmanship can also be defined in terms of discretionary decision making (Morris, et al. 1984) which is the implementation of policies and programs at the school level in a way that fits the principal's values, philosophy, and goals. This research focused on school …

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Supervisor Characteristics Affecting Subordinates' Perceptions And Reactions To The Performance Appraisal Interview., Jeffrey Staron Rain Jan 1991

Supervisor Characteristics Affecting Subordinates' Perceptions And Reactions To The Performance Appraisal Interview., Jeffrey Staron Rain

LSU Historical Dissertations and Theses

Supervisor inputs (preparation, appraisal-related knowledge, and attitudes toward the appraisal system) into the performance appraisal interview were examined, using a questionnaire, for relationships to subordinate perceptions of the supervisor's appraisal interview actions (developmental and administrative). Subordinate reaction to the appraisal interview was also assessed. Eighty-nine subordinate/supervisor pairs were randomly assigned to one of three experimental preparation conditions (Example, Improve, Control). All subjects then completed the questionnaires. The results of the experimental component indicated that supervisors who generated specific performance weakness and strength examples (Improve condition) were perceived by subordinates as engaging in significantly greater developmental behaviors than in the Control …

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Effective School Status: A Methodological Study Of Classification Consistency., Michael Hansen Lang Jan 1991

Effective School Status: A Methodological Study Of Classification Consistency., Michael Hansen Lang

LSU Historical Dissertations and Theses

This study investigated both the effect of alternating criterion-referenced tests (CRT) with norm-referenced tests (NRT) in evaluating schools and whether mean scores were masking poor delivery of educational services to low achievers in such evaluations. The sample included 242 Louisiana public elementary schools (18,000 third graders tested in 1989). The study employed ten separate multiple regression models, each producing studentized residuals used as school effectiveness indicators (SEIs). The independent variables for all models were student's free lunch status, mother's educational level, and father's employment level. The dependent variables were school mean and lower quartile scores for CRT language arts and …

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Faulkner, Truth, And The Artist's Directive: A Reading Of "A Fable"., Bobby Lynn Matthews Jan 1991

Faulkner, Truth, And The Artist's Directive: A Reading Of "A Fable"., Bobby Lynn Matthews

LSU Historical Dissertations and Theses

The old general in A Fable embodies the resolution of questions about the relation of art and life that Faulkner evoked in his invention of Quentin Compson in The Sound and the Fury and pursued in a series of subsequent characterizations. This artist-figure motif discloses Faulkner's implication of the relation in the modern crisis of faith. Faulkner images in narrative fiction what Nietzsche asserts in discourse, namely, the need for a reversal of the Platonic valuation of eternal "truth" (ideality) over art. The characterization of Quentin shows the potentially terrible consequences of man's propensity for mythopoeic invention, as Quentin's unconscious …

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Studies In Fructofuranose Chemistry., Ronald Joseph Voll Jan 1991

Studies In Fructofuranose Chemistry., Ronald Joseph Voll

LSU Historical Dissertations and Theses

The glycolytic pathway enzyme phosphofructokinase (E.C. 2.7.1.11) has as its substrate and activator two different carbohydrate phosphate esters. Both are derivatives of D-fructose in the furanose ring form. This dissertation is divided into two chapters: the first deals with the conformational specificity of the active site and the second the structure of the activator. The compound 2,5-anhydro-3,4-O-(1,2-ethanediyl)-D-mannitol was designed to test the active site. The synthesis utilized a phase-transfer cyclo-dialkylation of a vicinal diol to yield a trans-fused 2,5,8-trioxabicyclo (4.3.0) nonane system. The final product was shown to exist in a locked conformation in solution by temperature dependent n.m.r. experiments …

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Patterning The Past: History As Ideology In Modern Southern Fiction., Deborah Wilson Jan 1991

Patterning The Past: History As Ideology In Modern Southern Fiction., Deborah Wilson

LSU Historical Dissertations and Theses

In this study, I analyze the modes of historical representation in works by Robert Penn Warren, William Faulkner, Eudora Welty and Ellen Douglas. In the chapter on All the King's Men, a novel that exemplifies the masculine historical perspective of traditional Southern literature, I show how Warren defines history as a process moving toward a predetermined end and then structures the narrative so that the women characters are constantly positioned outside that definition. In the second chapter, I begin with Eudora Welty's The Robber Bridegroom, examining the ways she alters the traditional story line of American history by drawing attention …

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The Immunoepidemiology Of Lung Cancer And Smoking: Lymphocyte Subsets., Joan Peters Blackmon Jan 1991

The Immunoepidemiology Of Lung Cancer And Smoking: Lymphocyte Subsets., Joan Peters Blackmon

LSU Historical Dissertations and Theses

The relative proportions of lymphocyte subsets in the peripheral blood constitute a measure of immune status. Results of research to establish whether or not individuals with lung cancer differ in their lymphocyte composition have conflicted due to failure to control for factors other than cancer that affect lymphocyte balance. This study was designed to quantitatively estimate the effects of variables such as disease (lung cancer), smoking, age, circadian and circannual rhythms, and dietary factors on lymphocyte subsets. Questionnaires were given to 64 white males with primary lung cancer and 219 cancer-free white males and a blood sample was obtained. Lymphocytes …

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The Making Of Meaning: Three Children's Responses To Three Researcher-Composed Narratives., Mary S. Everett Jan 1991

The Making Of Meaning: Three Children's Responses To Three Researcher-Composed Narratives., Mary S. Everett

LSU Historical Dissertations and Theses

Three children's responses to three research-composed narratives were investigated. Participants were eight-year-old girls from the lower S.E.S., African-American culture. Study focuses on the composing processes used to write three children's stories and the responses of children to the stories. The author's intended meaning was compared with the children's construction of meaning. After each story was read aloud, response was elicited by each participant retelling the story and answering open-ended interview questions. One week later the participant was asked to retell the story a second time to determine changes in concept of story. Data were analyzed according to grounded theory methodology. …

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The Relation Between Categorization And Recognition In Ill-Defined Categories., Jeung-Ryeul Cho Jan 1991

The Relation Between Categorization And Recognition In Ill-Defined Categories., Jeung-Ryeul Cho

LSU Historical Dissertations and Theses

This study investigated the relation between recognition and categorization and examined learning processes associated with categorization of ill-defined concepts. Three experiments were conducted, in which recognition and categorization data were simultaneously collected (Estes, 1986b). Stimuli were bar charts and letter strings that simulated symptom patterns. Category structures were defined by independent features in Experiment 1 and correlated features in Experiments 2 and 3. Three different models of categorization, exemplar models, rule models, and dual process models, were contrasted in predicting recognition and categorization performances and the learning processes used to categorize. Across the three experiments, recognition and categorization were often …

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An Analysis Of Syntactic Skills Used In Translating Natural Language Sentences Into Algebraic Equations., Elizabeth Devalcourt Gray Jan 1991

An Analysis Of Syntactic Skills Used In Translating Natural Language Sentences Into Algebraic Equations., Elizabeth Devalcourt Gray

LSU Historical Dissertations and Theses

The purpose of this study is to determine how a competent person translates a natural language sentence into an algebraic equation. A current theory of how translation occurs is espoused by a group of cognitive scientists who propose that the competent translator uses only conceptual strategies in the translation process. I propose and investigate an alternate theory that the translation skills of a competent student are based on a syntactic analysis and syntactic manipulation of the sentence. In most cases such direct, syntactic translation processes will suffice, but for a small minority of sentence types a decision must be made …

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Coupling Of Electronic And Nuclear Degrees Of Freedom In Diatomic Molecules: A Quantum Defect Study., Hong Gao Jan 1991

Coupling Of Electronic And Nuclear Degrees Of Freedom In Diatomic Molecules: A Quantum Defect Study., Hong Gao

LSU Historical Dissertations and Theses

The coupling of electronic and nuclear degrees of freedom in electron scattering from a homonuclear diatomic molecule has been studied using the frame transformation method in conjunction with the multichannel quantum defect theory (MQDT). Exploration of non-adiabatic effects resulting from large electron-molecule distances, resonances, and dissociation shows that the interconversion of energy between electronic and nuclear motion takes place mainly in the vicinity of the molecular target where the outermost electron couples strongly to the nuclei. MQDT enables us to describe these effects based on a body-frame quantum defect function, which can be obtained either from a short-range ab initio …

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Genotype X Environment Interaction For Growth And Reproductive Traits In Beef Cattle., Louis Munyakazi Jan 1991

Genotype X Environment Interaction For Growth And Reproductive Traits In Beef Cattle., Louis Munyakazi

LSU Historical Dissertations and Theses

Data on eight different two breed combinations of calves produced in two locations (Louisiana and Nebraska) were analyzed to determine the magnitude of genotype x location interactions for gestation length (GESTLEN), birth weight (BWT), pre-weaning average daily gain (ADG) and weaning weight (WWT). Sire breed (SB), sire/SB and cow breed (CB) interactions with location (LOC) were the primary sources of variation of interest in the analysis of variance. The SB x LOC interaction was significant for all traits whereas the CB x LOC interaction was important only for ADG. The sire/SB x LOC interaction accounted for a significant amount of …

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Biological Treatment Of Hazardous Waste Sludges In Suspended Growth Systems For Removal Of Benzo(A)Pyrene And Other Polynuclear Aromatics., Robert E. Marks Jan 1991

Biological Treatment Of Hazardous Waste Sludges In Suspended Growth Systems For Removal Of Benzo(A)Pyrene And Other Polynuclear Aromatics., Robert E. Marks

LSU Historical Dissertations and Theses

The scope of this research project was to develop a bioremediation process for accelerated oxidation of bioresistant hazardous waste sludges in continuous flow sludge reactors. Benzo(a)pyrene (BaP) was selected as the target compound due its strong bioresistance, highly carcinogenic nature, extremely low aqueous solubility, and extremely low allowable release limits for land disposal. BaP is often a major hazardous organic component in many hazardous waste impoundments when source wastes have originated from either petroleum refining or associated petrochemical facilities. There is evidence that the biodegradation rate of high molecular weight polynuclear aromatic hydrocarbons (PNA's) is the rate limiting step in …

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Modeling The Effect Of Shale Heterogeneities On Hazardous Waste Transport In Deep Well Disposal Systems., Seung-Whee Rhee Jan 1991

Modeling The Effect Of Shale Heterogeneities On Hazardous Waste Transport In Deep Well Disposal Systems., Seung-Whee Rhee

LSU Historical Dissertations and Theses

The transport of hazardous wastes in heterogeneous confining layers was evaluated using numerical simulations. The expected configuration of the confining layers was defined by Monte Carlo techniques assuming a binary random structure composed of pure sand and pure shale zones. Flow and solute transport in the generated configuration was determined via a finite element model. The effective permeability under saturated steady-state flow was dominated by shale permeability for higher shale fractions ($>$0.65) and by sand permeability for lower shale fraction ($<$0.4). The results agreed well with the numerical result of Desbarats (1987) and the analytical results of Dagan (1979). The effective vertical permeabilities were found to be dependent on shale size and anisotropy. Application of the techniques to a well in Jefferson Parish, Louisiana suggested that a mean advective penetration into confining layer using the injection pressure as an upper bound to the driving pressure was only 3m over 10,000 years. Transport calculations assuming a constant pressure driving force over 10,000 years suggested solute transport was controlled by hydrodynamic dispersion (dispersion + diffusion) rather than advection for higher shale fractions. Transport calculations assuming active injection for only the first 100 years suggested solute transport was controlled by diffusion for higher shale fraction. Buoyancy effects associated with salinity and temperature variations were negligible for solute transport through confining layers with a shale permeability less than 0.01 md. The results of solute transport of hazardous wastes in heterogeneous confining layers suggested that confining layers greater than 300 ft in thickness with shale fractions of greater than 0.65 and shale permeabilities of less than 0.01 md would be expected to contain injected wastes for 10,000 years.

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