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1999

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Weierstrass Pairs And Minimum Distance Of Goppa Codes., Gretchen L. Matthews Jan 1999

Weierstrass Pairs And Minimum Distance Of Goppa Codes., Gretchen L. Matthews

LSU Historical Dissertations and Theses

We prove that elements of the Weierstrass gap set of a pair of points may be used to define a geometric Goppa code that has minimum distance greater than the usual lower bound. We determine the Weierstrass gap set of a pair of any two Weierstrass points on a Hermitian curve and use this to increase the lower bound on the minimum distance of certain codes defined using a linear combination of the two points. In particular, we obtain some two-point codes on a Hermitian curve that have better parameters than the one-point code on this curve with the same …

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Inequalities Between Pythagoras Numbers And Algebraic Ranks In Witt Rings Of Fields., Sidney Taylor Hawkins Jan 1999

Inequalities Between Pythagoras Numbers And Algebraic Ranks In Witt Rings Of Fields., Sidney Taylor Hawkins

LSU Historical Dissertations and Theses

This dissertation establishes new lower bounds for the algebraic ranks of certain Witt classes of quadratic forms. Let K denote a field of characteristic different from 2 and let q be a quadratic form over K. The form q is said to be algebraic when q is Witt equivalent to the trace form qL∣K of some finite algebraic field extension L∣K . When q is algebraic, the algebraic rank of q is defined to be the degree of the minimal extension L∣K whose trace form is Witt equivalent to q. It is an important, unsolved problem to find reasonable bounds …

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On Biodata Construct Validity, Criterion-Related Validity, And Adverse Impact., Michelle Ann Dean Jan 1999

On Biodata Construct Validity, Criterion-Related Validity, And Adverse Impact., Michelle Ann Dean

LSU Historical Dissertations and Theses

This study examined the personnel selection technique of biographical information (biodata) in terms of theory, criterion-related validity, and adverse impact. First, the construct validity of biodata was examined to determine if biodata theory was useful in explaining biodata's strong criterion validity. Items from an existing biodata inventory were mapped onto construct domains drawn from Mumford, Stokes, and Owens' (1990) ecology model. Relationships between subjects' biodata responses and training performance was examined for consistency with the model's predictions in an organizational sample. The ecology model did not fit the data well. Follow up exploratory analyses did yield good fit when the …

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Metals Release From Freshwater And Estuarine Sediments In Thin-Disk Leaching Columns., Tommy Eldridge Myers Jan 1999

Metals Release From Freshwater And Estuarine Sediments In Thin-Disk Leaching Columns., Tommy Eldridge Myers

LSU Historical Dissertations and Theses

Column leaching tests were conducted on two freshwater sediments and two estuarine sediments. Leachate samples were analyzed for total organic carbon (TOC), cadmium, chromium, copper, iron, manganese, lead, nickel, and zinc. Metal and TOC elution curves for freshwater sediments were fundamentally different from estuarine sediment elution curves. The difference was due to colloid-facilitated transport of metals and TOC in estuarine sediments that was caused by salt washout during leaching with distilled-deionized water. Metals and TOC concentrations in freshwater sediment leachates tended to monotonically decrease from initial pore water concentrations. Leaching of metals and TOC from freshwater sediments was modeled with …

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Parameter Estimation For The Finite Fourier Distribution In Civil Engineering Application., Ching-Nien Tsai Jan 1999

Parameter Estimation For The Finite Fourier Distribution In Civil Engineering Application., Ching-Nien Tsai

LSU Historical Dissertations and Theses

A solution to a one dimensional diffusion equation applicable to a finite interval was adapted to be a probability distribution function. This distribution function can accommodate various shapes of distribution such as those similar to the uniform, single-modal, and bi-modal distributions. This distribution is bounded at both boundaries. It was named the finite Fourier distribution (FFD) to recognize the form of the distribution. The FFD was extended to include a linear combination of the FFD termed two-component FFD. Monte Carlo simulation technique was used to evaluate four parameter estimation techniques, Method of Maximum Likelihood Estimator (MLE), Method of Moments (MOM), …

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A Rate Dependent Anisotropic Damage Model For Metal Matrix Composites At Elevated Temperatures., Babur Deliktas Jan 1999

A Rate Dependent Anisotropic Damage Model For Metal Matrix Composites At Elevated Temperatures., Babur Deliktas

LSU Historical Dissertations and Theses

A rate dependent plastic and anisotropic damage model is developed for a metal matrix composite (MMC) system at elevated temperatures. The developed constitutive model will enable one to predict the inelastic response of the composite material at different loading rates at elevated temperatures. The formulation is thermodynamically based using the concept of internal state variables. Two sets of internal variables are introduced into the thermodynamic potential. One set characterizes the viscoplastic behavior of the ductile matrix and its effect on the overall inelastic response of the composite while the second set characterizes the damage for each constituent of the composite. …

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General Riemann Integrals And Their Computation Via Domain., Bin Lu Jan 1999

General Riemann Integrals And Their Computation Via Domain., Bin Lu

LSU Historical Dissertations and Theses

In this work we extend the domain-theoretic approach of the generalized Riemann integral introduced by A. Edalat in 1995. We begin by laying down a related theory of general Riemann integration for bounded real-valued functions on an arbitrary set X with a finitely additive measure on an algebra of subsets of X. Based on the theory developed we obtain a formula to calculate integral of a bounded function in terms of the regular Riemann integral. By classical extension theorems on set functions we can further extend this generalized Riemann integral to more general set functions such as valuations on lattices …

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Tragicomedy: An Attempt At Classification., Jeri Laureen Lowe Jan 1999

Tragicomedy: An Attempt At Classification., Jeri Laureen Lowe

LSU Historical Dissertations and Theses

This study has attempted to identify the specificity of tragicomedy in light of the lack of any critical consensus as to its nature by looking at tragicomedy as theatre. Theatre's difference from other genres lies in the importance of the spectator's role in the theatrical event, and it is the premise of this analysis that it is in the role of the spectator that the specificity of tragicomedy is to be identified. Whereas in tragedy and comedy the spectator is made to participate in closure by a well-constructed structure which leads him/her to a conclusion ("catharsis" or "epiphany"), this study …

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The Applications Of The Method Of Quasi Reversibility To Some Ill-Posed Problems For The Heat Equation., Xueping Ru Jan 1999

The Applications Of The Method Of Quasi Reversibility To Some Ill-Posed Problems For The Heat Equation., Xueping Ru

LSU Historical Dissertations and Theses

In this work, we study the Cauchy problem for the heat equation, as well as the inverse heat conduction problem, both of which are ill-posed problems in the sense of Hadamard. The first chapter provides the background material about the previous investigations on the ill-posed Cauchy problem for the heat equation and the inverse heat conduction problem by other mathematicians. The method of Quasi-Reversibility is also introduced. In the second chapter we apply the method of Quasi-Reversibility to the Cauchy problem for the heat equation and obtain a formal approximate solution. We prove that the convergence of the approximate solution …

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Psychometric And Historical Predictors Of Behavior In Incarcerated Female Juvenile Offenders: A Longitudinal Analysis., Michael P. Santa Maria Jan 1999

Psychometric And Historical Predictors Of Behavior In Incarcerated Female Juvenile Offenders: A Longitudinal Analysis., Michael P. Santa Maria

LSU Historical Dissertations and Theses

The purpose of the current study was to investigate whether factors known to predict recidivism and future misbehavior are useful in predicting behavior of offenders while incarcerated. This study examined the population of all incarcerated and recently released female juvenile offenders in Louisiana (n = 211). Predictive equations were developed based on demographic, offense-related, and psychological test variables including: age, race, age at first offense, number of prior offenses, history of a violent offense, history of physical abuse, history of sexual abuse, history of alcohol abuse, history of drug abuse, IQ, and Test of Adult Basic Education (TABE) Reading Comprehension …

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The Effects Of Problem Constraint Analysis On Analogical Transfer., Ann Elizabeth Speed Jan 1999

The Effects Of Problem Constraint Analysis On Analogical Transfer., Ann Elizabeth Speed

LSU Historical Dissertations and Theses

One primary goal of education, either in the schools or in a training situation, is for the students to use the information learned in the classroom in other relevant situations. This goal of transfer of training proves difficult to attain. Several manipulations used in the literature have increased transfer (Catrambone & Holyoak, 1989; Gick & Holyoak, 1980,1983). However, all of these manipulations are not feasible for real-world use. The current experiments were designed to increase the ecological validity of manipulations and stimuli used previously by providing feedback to participants about their initial solution to a problem. Interestingly, the feedback manipulation …

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On Harmonic Analysis For White Noise Distribution Theory., Aurel Iulian Stan Jan 1999

On Harmonic Analysis For White Noise Distribution Theory., Aurel Iulian Stan

LSU Historical Dissertations and Theses

This thesis is composed of two parts, each part treating a different problem from the theory of Harmonic Analysis. In the first part we present an inequality in White Noise Analysis similar to the classical Heisenberg Inequality for functions in L2Rn . To do this we replace the finite dimensional space R n and its Lebesgue measure by the infinite dimensional space E' , which is the dual of a nuclear space E , and its Gaussian measure. Choosing an arbitrary element eta in E , we may define the multiplication operator Q&d5;h , which is the sum between the …

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Structure And Minors In Graphs And Matroids., Galen Ellsworth Turner Iii Jan 1999

Structure And Minors In Graphs And Matroids., Galen Ellsworth Turner Iii

LSU Historical Dissertations and Theses

This dissertation establishes a number of theorems related to the structure of graphs and, more generally, matroids. In Chapter 2, we prove that a 3-connected graph G that has a triangle in which every single-edge contraction is 3-connected has a minor that uses the triangle and is isomorphic to K5 or the octahedron. We subsequently extend this result to the more general context of matroids. In Chapter 3, we specifically consider the triangle-rounded property that emerges in the results of Chapter 2. In particular, Asano, Nishizeki, and Seymour showed that whenever a 3-connected matroid M has a four-point-line-minor, and T …

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Totally Ordered Monoids., Gretchen Wilke Whipple Jan 1999

Totally Ordered Monoids., Gretchen Wilke Whipple

LSU Historical Dissertations and Theses

In this work, we explore properties of totally ordered commutative monoids---we call them tomonoids. We build on the work in [E]. Our goal is to obtain results that will be useful for studying totally ordered rings with nilpotents. Chapter 1 presents background information. In Chapter 2, we present some criteria for determining when a tomonoid is a quotient of a totally ordered free monoid by a convex congruence. In Chapter 3, we show that every positive tomonoid of rank 2 is a convex Rees quotient of a subtomonoid of a totally ordered abelian group. In Chapter 4, we provide a …

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The Effects Of Team-Member Attributes On Team Performance: A Model Of Individual Contribution To Team Performance., Joe J. Yum Jan 1999

The Effects Of Team-Member Attributes On Team Performance: A Model Of Individual Contribution To Team Performance., Joe J. Yum

LSU Historical Dissertations and Theses

Although team composition is one of the most frequently studied topics in team research, much remains unknown regarding what attributes to look for when selecting team-members and how these attributes affect team performance. The purpose of this study was to present and to test a theoretical model that depicts how individual attributes affect team-member performance and how team-member performance ultimately affects team performance. The proposed model is based on the integration of research on team and individual performance. From a practical standpoint, understanding the relationships among the variables in the proposed model may be important for the selection of employees …

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Integrative Approach To Online Quality Management: Process Control And Packout Verification In An Intelligent Manufacturing Workcell., Turuvekere R. Sethumadhava Jan 1999

Integrative Approach To Online Quality Management: Process Control And Packout Verification In An Intelligent Manufacturing Workcell., Turuvekere R. Sethumadhava

LSU Historical Dissertations and Theses

The current global competition and the economic situation in the United States and the world is forcing industries to produce quality products quickly and at a competitive price. Many industries are aiming towards world class manufacturing objectives like responsive delivery, defect free product and declining cost. Industries in the present environment can survive and produce the quality products to customer expectations only if they implement new technologies. The key element in the success of industries is using the continuous process improvement strategies like reducing process variability and reducing response time to process deviations. Achieving quality in manufacturing processes is an …

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An Engineering Equation Of State: Square-Well Statistical Associating Fluid Theory (Saft)., Hertanto Adidharma Jan 1999

An Engineering Equation Of State: Square-Well Statistical Associating Fluid Theory (Saft)., Hertanto Adidharma

LSU Historical Dissertations and Theses

Molecular thermodynamics is an engineering discipline rooted in molecular physics and physical chemistry and aimed at developing practical models that predict the properties of matter. The goal of this work is to develop a molecular thermodynamic model for predicting fluid densities, phase equilibria, and energy functions, such as enthalpy and heat capacity. Chemical engineers need these properties to develop and design new processes and materials, and to make these processes energy efficient and environmentally benign. The approach is to hypothesize a mathematical approximation that captures interactions among real molecules on the basis of a molecular theory called the statistical associating …

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Helium And Heavy Ion Measurements With The Crres Satellite., Edmund Gary Clayton Jan 1999

Helium And Heavy Ion Measurements With The Crres Satellite., Edmund Gary Clayton

LSU Historical Dissertations and Theses

The CRRES satellite was in service from July 1990 to October 1991, during a period of high solar modulation and solar activity. The ONR-604 experiment aboard CRRES measured helium with isotopic resolution in the energy range 38--110 MeV/nucleon, and heavy ions through iron at 200--500 MeV/nucleon. Although solar modulation was high throughout the CRRES mission, the mission included periods of solar quiescence as well as a number of large solar flares and associated solar energetic particle events. Measurements were made of helium and heavy ions during both the quiet times and the flare periods. A study was made to search …

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Flexural Creep Analysis Of Recycled Polymeric Structural Elements., Jose Noe Martinez-Guerrero Jan 1999

Flexural Creep Analysis Of Recycled Polymeric Structural Elements., Jose Noe Martinez-Guerrero

LSU Historical Dissertations and Theses

A structural product made of recycled plastics in standard sections similar to dimensional lumber is referred to as plastic lumber. The recycled plastics used in the manufacture of these members include high density polyethylene, polyethylene terephthalate and polystyrene. Plastic lumber is a viscoelastic material possessing mechanical properties that are time and temperature dependent. This structural product is currently used primarily in non-load-bearing and low-end structural applications because of the non availability of engineering data and concerns about its creep behavior. Creep, which is the time dependent deformation under constant stress, is high for plastic lumber and is temperature sensitive. A …

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Computational Approach For Determination Of The Hydraulic Conductivity Of Soils Using Continuous Intrusion Piezocone Penetration Test., Chung Rak Song Jan 1999

Computational Approach For Determination Of The Hydraulic Conductivity Of Soils Using Continuous Intrusion Piezocone Penetration Test., Chung Rak Song

LSU Historical Dissertations and Theses

In order to obtain the hydraulic conductivity or the coefficient of consolidation of the soil from PCPT, the pore pressure response during dissipation test is typically used. This method, however, requires the intermittent stopping of the advancement of the piezocone penetrometer for the dissipation test. Also, this method does not fully take into account the pore pressure interaction between near and far fields as pointed out by previous researchers (Kurup and Tumay, 1997). Thus a new rational approach is investigated here. The proposed method utilizes the pore water pressure during the penetration of the piezocone penetrometer. By its nature, the …

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Effects Of The 4 X 4 Block Schedule On Teacher Behavior And Student Engagement Rate At The High School Level., Karen Meredith Soniat Jan 1999

Effects Of The 4 X 4 Block Schedule On Teacher Behavior And Student Engagement Rate At The High School Level., Karen Meredith Soniat

LSU Historical Dissertations and Theses

Numerous educators have suggested that traditional scheduling practices in the nation's schools have contributed to the inability of teachers to utilize "proven" instructional techniques. This study examined the effects of the 4 x 4 block schedule on teaching behavior and student engagement rate in four core curriculum areas in 21 Louisiana high schools. This causal-comparative, ex-post facto study involved three group of schools matched to the extent possible on student population, free/reduced lunch, and community type. The 250 teachers in the Phase I (quantitative study) sample were randomly selected and measured via classroom observations. MANOVA results relating to differences on …

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Sire Selection And Mating Practices In United States Dairy Herd Improvement Association Holstein Herds., Asiye Yilmaz Jan 1999

Sire Selection And Mating Practices In United States Dairy Herd Improvement Association Holstein Herds., Asiye Yilmaz

LSU Historical Dissertations and Theses

Over two million Holstein mating records was used to investigate selection and mating practices. Population statistics revealed non-random mating and selection. Herd production level was associated with higher breeding value sires and price paid per unit of semen. The decision to use an Artificial Insemination (AI) sire or natural service sire was studied and a discriminant function was derived that accurately categorized matings in a test data set of 117,000 observations, with an error rate less than 2.5 percent. Discriminating variables were herd production level, lactation number, service number, breeding month, cow status code, and days in milk at breeding. …

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How The Villanelle's Form Got Fixed., Julie Ellen Kane Jan 1999

How The Villanelle's Form Got Fixed., Julie Ellen Kane

LSU Historical Dissertations and Theses

This work debunks the myth of the villanelle as a "fixed poetic form" dating back to the sixteenth century or earlier and replaces it with a new-historical account of how a semi-improvisatory musico-poetic genre, the choral-dance lyric, was "translated" across ruptures in lyric technology between oral, manuscript, and print cultures. The "fixity" of the villanelle's written form is shown to be not a matter of long-standing "heritage" or "tradition," but the result of deliberate actions taken by one eighteenth- and one nineteenth-century individual who inserted less-than-truthful passages into otherwise "authoritative" prosodic treatises. Chapter 1 identifies the literary sources responsible for …

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Interest Of Department Of Correctional Education Personnel In Attending Old Dominion University Via The Teletechnet Distance Education System, Dennis D. Traverse Jan 1999

Interest Of Department Of Correctional Education Personnel In Attending Old Dominion University Via The Teletechnet Distance Education System, Dennis D. Traverse

OTS Master's Level Projects & Papers

This study will determine: 1. If Department of Correctional Education full-time academic teachers are interested in taking the courses required to complete the Master of Science in Education degree with a concentration in correctional education programs via the Old Dominion University TELETECHNET Distance Education Program; 2. What content should be included in the concentration courses for correctional education personnel.

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Virginia Beach Middle School Technology Education Teachers Reinforcing Academic Standards, Stephen L. Baird Jan 1999

Virginia Beach Middle School Technology Education Teachers Reinforcing Academic Standards, Stephen L. Baird

OTS Master's Level Projects & Papers

The following objectives were established to address this problem: 1. Determine Virginia Beach Middle School Technology Education teachers involvement in assisting students to master Virginia Standards of Learning competencies; 2. Determine the types of assistance that the Virginia Beach Public School system provides to help align the SOL of the academic curriculum with instruction in the curriculum of Technology Education; 3. Determine specific means that teachers have used to integrate the academic curriculum with instruction in the Technology Education curriculum.

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The Effects Of Applied Technology Instruction On Mathematics And Science Achievement Of Eighth Grade Students, John D. Hammons Jan 1999

The Effects Of Applied Technology Instruction On Mathematics And Science Achievement Of Eighth Grade Students, John D. Hammons

OTS Master's Level Projects & Papers

The problem of this study was to evaluate the effectiveness of he Grafton Middle School technology education program's interdisciplinary activities in improving math and science grades of its students.

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A Comparison Of Aluminum To Ceramic Lap Tools In Optical Lens Surfacing, Derek M. Walls Jan 1999

A Comparison Of Aluminum To Ceramic Lap Tools In Optical Lens Surfacing, Derek M. Walls

OTS Master's Level Projects & Papers

The purpose of this study was to determine if ceramic lap tools produce as high a quality of optical lenses as aluminum lap tools during the surfacing process in eye ware manufacturing, if ceramic lap tools are easier or harder to work with than aluminum lap tools, if ceramic lap tools last as long as aluminum lap tools, and if ceramic tolls are as cost effective as aluminum lap tools.

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A Comparison Of Instructor Professional Development Hours And Student Academic Achievement, Thomas L. Langdon Jan 1999

A Comparison Of Instructor Professional Development Hours And Student Academic Achievement, Thomas L. Langdon

OTS Master's Level Projects & Papers

The problem of this study was to determine if there is a significant positive correlation between Airman Leadership School (ALS) instructors who actively participated in a professional development program and the academic achievement of their trainees.

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An Appraisal Of The Accelerated Medical Laboratory Technician Program At Thomas Nelson Community College, Christine T. Gillerlain Jan 1999

An Appraisal Of The Accelerated Medical Laboratory Technician Program At Thomas Nelson Community College, Christine T. Gillerlain

OTS Master's Level Projects & Papers

The goals of this study were to answer the following questions: 1. Does the accelerated MLT program provide the same educational experiences as the traditional MLT program? 2. Does a change to a more concentrated course schedule change the Navy MLT student's opinions about the program in which they are enrolled? 3. What are the major weaknesses and the major benefits of the accelerated program as indicated by the student? 4. How does the student performance compare in the accelerated MLT program with the traditional MLT program as measured by the final grades in Hematology, Blood Bank, Urinalysis, and Immunology?

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Pseudospectral Solution Of The Two-Dimensional Navier{Stokes Equations In A Disk, Evangelos A. Coutsias, David J. Torres Jan 1999

Pseudospectral Solution Of The Two-Dimensional Navier{Stokes Equations In A Disk, Evangelos A. Coutsias, David J. Torres

Branch Mathematics and Statistics Faculty and Staff Publications

An efficient and accurate algorithm for solving the two-dimensional (2D) incompressible Navier-Stokes equations on a disk with no-slip boundary conditions is described. The vorticity stream function formulation of these equations is used, and spatially the vorticity and stream functions are expressed as Fourier-Chebyshev expansions. The Poisson and Helmholtz equations which arise from the implicit-explicit time marching scheme are solved as banded systems using a postconditioned spectral tau-method. The polar coordinate singularity is handled by expanding fields radially over the entire diameter using a parity modified Chebyshev series and building partial regularity into the vorticity. The no-slip boundary condition is enforced …

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