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Tracking Dynamic Features In Image Sequences., Sankar Krishnamurthy Jan 1994

Tracking Dynamic Features In Image Sequences., Sankar Krishnamurthy

LSU Historical Dissertations and Theses

This dissertation deals with detecting and tracking dynamic features in image sequences using digital image analysis algorithms. The tracking problem is complicated in oceanographic images due to the dynamic nature of the features. Specifically, the features of interest move, change size and shape. In the first part of the dissertation, the design and development of a new segmentation algorithm, Histogram-based Morphological Edge Detector (HMED), is presented. Mathematical morphology has been used in the past to develop efficient and robust edge detectors. But these morphological edge detectors do not extract weak gradient edge pixels, and they introduce spurious edge pixels. The …

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A Confederate Education In The New South: Southern Academia And The Idea Of Progress In The Nineteenth Century., Danny Ray Frost Jan 1994

A Confederate Education In The New South: Southern Academia And The Idea Of Progress In The Nineteenth Century., Danny Ray Frost

LSU Historical Dissertations and Theses

The idea of progress inspired former Confederate officers who entered academia to transform Southern higher education from its antebellum classical and republican orientation to a postbellum focus on science and utility. Defeat taught these academics that Southern institutions had failed to supply graduates with the scientific skills necessary to compete economically, industrially, and militarily with the North. They concluded that the Confederacy's collapse demonstrated the necessity of abandoning the republican conception of progress, characterized by fears of cyclical decay, in favor of the modern idea of progress which emphasized inevitable and unlimited material and social improvement. Confederate-veterans-turned academics believed scientific …

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A Specification Environment That Supports The Prototyping Of Distributed Systems Using An Object-Oriented Model., Abbas Dehkhoda Jan 1994

A Specification Environment That Supports The Prototyping Of Distributed Systems Using An Object-Oriented Model., Abbas Dehkhoda

LSU Historical Dissertations and Theses

High-speed computer networking, interactive service, and incremental growth for computing are some of the motivations for developing a distributed system. Despite the inherent benefits of a distributed system, the development of software support is more difficult for distributed systems than for sequential systems. In either case, difficulties may arise from the communication problems between two groups of people with different backgrounds trying to formulate requirements for the system. This process depends on feedback and may take many iterations to converge. Customers can usually recognize the features they need when they start using a system, which makes prototyping an important tool …

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Second Order Neural Networks., Sanjoy Das Jan 1994

Second Order Neural Networks., Sanjoy Das

LSU Historical Dissertations and Theses

In this dissertation, a feedback neural network model has been proposed. This network uses a second order method of convergence based on the Newton-Raphson method. This neural network has both discrete as well as continuous versions. When used as an associative memory, the proposed model has been called the polynomial neural network (PNN). The memories of this network can be located anywhere in an n dimensional space rather than being confined to the corners of the latter. A method for storing memories has been proposed. This is a single step method unlike the currently known computationally intensive iterative methods. An …

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Factors Influencing Conceptual Change In Evolution: A Longitudinal, Multicase Study., Sherry Southerland Demastes Jan 1994

Factors Influencing Conceptual Change In Evolution: A Longitudinal, Multicase Study., Sherry Southerland Demastes

LSU Historical Dissertations and Theses

A high school Biology II classroom was observed daily in order to study students' conceptual change in evolution of life. The conceptual frameworks of four student participants were documented and the patterns of conceptual change were studied closely throughout the full school year. Data collected included open-ended and structured individual interviews, student journals, daily classroom observations, field notes, and pre-and posttests. All 68 student interviews (17 per student) were recorded, transcribed, coded, and sorted to find patterns of conceptual change. Additional interviews were conducted with the teacher, parents, principal, and high school counselor. The researchers' interpretations were shared with the …

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Application Of Optimum Solutions Of A Diffusion Model To Evaluate The Effects Of Extractives In Wood Drying., Yong Chen Jan 1994

Application Of Optimum Solutions Of A Diffusion Model To Evaluate The Effects Of Extractives In Wood Drying., Yong Chen

LSU Historical Dissertations and Theses

This study evaluates the influence of extractives on moisture diffusivity, and thereby the drying behavior of wood. Extractives are minor chemical components of wood, and their effect on moisture diffusion is sensitive to experimental and calculation errors. A series of studies designed to accurately determine the proper solutions of a diffusion model was done; then studies to determine the effect of extractives in a wood drying system were undertaken. The drying curves derived from the optimum diffusion coefficients gave better prediction of experimental drying data than those derived from traditional approximate methods; therefore, optimum methods were applied in the study …

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A Comparative Study Of The Oral Language Of Students In Basal-Based And Whole Language Kindergartens., Joan H. Lucille Benedict Jan 1994

A Comparative Study Of The Oral Language Of Students In Basal-Based And Whole Language Kindergartens., Joan H. Lucille Benedict

LSU Historical Dissertations and Theses

Concern has existed for several years over the classroom practices relating to the "whole language" approach as opposed to the "basal-based" approach relative to literacy development, especially with respect to the appropriateness of each method for use with minority and lower socioeconomic groups of children entering kindergarten. This study describes the oral language of both African American and European American kindergarten children from low and middle socioeconomic status families who are attending public school kindergartens, one using whole language and one a basal-based approach. The language during centertime of seventeen children from these two classrooms was audiotaped using wireless microphones …

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An Examination Of The Intonation Tendencies Of Advanced Wind Instrumentalists Based On Their Performance Of Selected Musical Intervals., Brant Gilmore Karrick Jan 1994

An Examination Of The Intonation Tendencies Of Advanced Wind Instrumentalists Based On Their Performance Of Selected Musical Intervals., Brant Gilmore Karrick

LSU Historical Dissertations and Theses

The purpose of this study was to examine performance trends of advanced wind instrumentalists with regard to intervallic tuning. Factors of interest were tuning system, location (above or below a referential stimulus), interval type, and group (student or professional). Also of interest was the direction of deviation of the target pitches, sharp or flat, from equal temperament. Subjects (N = 16) were experienced wind instrumentalists, eight experienced professionals, and eight advanced university students. Subjects were recorded performing a two-part reduction of a Bach chorale, first playing the melody with a synthesized harmony line, then vice versa. Performances were transferred to …

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An Adaptive Finite Element Methodology For The High-Performance Computer Simulation Of Multiphase Flow Processes., Donald J. Morton Jr Jan 1994

An Adaptive Finite Element Methodology For The High-Performance Computer Simulation Of Multiphase Flow Processes., Donald J. Morton Jr

LSU Historical Dissertations and Theses

A methodology has been developed for the computer simulation of multiphase flow processes in porous media. The solutions to the nonlinear equations describing these processes are approximated by Galerkin's method on the spatial dimensions and the finite difference method on the temporal dimension. Due to the transient nature of discontinuities in the spatial domain, dynamic mesh refinement (and unrefinement) techniques, based on the maintenance of a 1-irregular mesh, are employed on a two dimensional mesh to produce fine resolution in regions of activity and coarse resolution elsewhere. Our unique approach is tested by comparing computed results with data from laboratory …

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A Self-Adaptive Database Buffer Replacement Scheme., Yueguo Tong Jan 1994

A Self-Adaptive Database Buffer Replacement Scheme., Yueguo Tong

LSU Historical Dissertations and Theses

The overall performance of a database system is very sensitive to the buffer replacement algorithm used. However, the performance evaluation of database buffer replacement algorithms commonly assumes that database accesses are independent and the probability for each individual database record to be accessed is fixed. Due to these rigid assumptions, the results of performance evaluation are not always reliable. In this dissertation, we apply Simon's model of information accessing to model database accessing frequencies. This approach relaxes the independent assumption, and since it also allows certain dynamic behavior in accessing frequencies; thus, it is more robust and preferable over the …

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"Kickshews Of Similitude" Hobbes And The Subterfuge Of Style, Roger D. Lund Jan 1994

"Kickshews Of Similitude" Hobbes And The Subterfuge Of Style, Roger D. Lund

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

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How Disturbed Was Hume By His Own Skepticism?, M. A. Box Jan 1994

How Disturbed Was Hume By His Own Skepticism?, M. A. Box

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

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Johnsonian Figures Copia And Lockean Observation In Samuel Johnsons Critical Writings, Mark Pedreira Jan 1994

Johnsonian Figures Copia And Lockean Observation In Samuel Johnsons Critical Writings, Mark Pedreira

1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era

No abstract provided.

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A Description And Comparison Of Variables That Influence Recidivism Of Selected Juveniles., Martin P. Carr Jan 1994

A Description And Comparison Of Variables That Influence Recidivism Of Selected Juveniles., Martin P. Carr

LSU Historical Dissertations and Theses

Nationally, over $1.6 billion is spent incarcerating juveniles. Prevention, rather than correction is needed to reduce these costs. The cost in human lives exceeds the 56,000 incarcerated juveniles. It touches more than those who commit the offense. Victims, families of victims and families of the convicted juvenile also pay a price to one degree or another. The purpose of this study was to identify and describe variables which may impact recidivism rates of selected juveniles who were charged and have arrest records on file. The research was based upon East Baton Rouge Parish, Louisiana, juvenile arrest files from 1981 through …

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Primary Decomposition Of Torsion R[X]-Modules, William A. Adkins Jan 1994

Primary Decomposition Of Torsion R[X]-Modules, William A. Adkins

Faculty Publications

This paper is concerned with studying hereditary properties of primary decompositions of torsion R[X]-modules M which are torsion free as R-modules. Specifically, if an R[X]-submodule of M is pure as an R-submodule, then the primary decomposition of M determines a primary decomposition of the submodule. This is a generalization of the classical fact from linear algebra that a diagonalizable linear transformation on a vector space restricts to a diagonalizablc linear transformation of any invariant subspace. Additionally, primary decompositions are considered under direct sums and tensor product. © 1994, Hindawi Publishing Corporation. All rights reserved.

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Lsu General Catalog 1994-1995, Louisiana State University And Agricultural And Mechanical College Jan 1994

Lsu General Catalog 1994-1995, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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Extended Loops: A New Arena For Nonperturbative Quantum Gravity, Cayetano Di Bartolo, Rodolfo Gambini, Jorge Griego, Jorge Pullin Jan 1994

Extended Loops: A New Arena For Nonperturbative Quantum Gravity, Cayetano Di Bartolo, Rodolfo Gambini, Jorge Griego, Jorge Pullin

Faculty Publications

We propose a new representation for gauge theories and quantum gravity. Alternatively, it can be viewed as a new framework for doing computations in the loop representation. It is based on the use of a novel mathematical structure that extends the group of loops into a Lie group. This extension allows the use of functional methods to solve the diffeomorphism and Hamiltonian constraint equations. It puts in a precise framework some of the regularization problems of the loop representation. It has practical advantages in the search for quantum states. Making use of it we are able to find a new …

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Late-Time Behavior Of Stellar Collapse And Explosions. Ii. Nonlinear Evolution, Carsten Gundlach, Richard H. Price, Jorge Pullin Jan 1994

Late-Time Behavior Of Stellar Collapse And Explosions. Ii. Nonlinear Evolution, Carsten Gundlach, Richard H. Price, Jorge Pullin

Faculty Publications

We compare the predictions of linearized theory for the radiation produced in the collapse of a spherically symmetric scalar field with a full numerical integration of the Einstein equations. We find power-law tails and quasinormal ringing remarkably similar to predictions of linearized theory even in cases where nonlinearities are crucial. We also show that power-law tails develop even when the collapsing scalar field fails to produce a black hole. © 1994 The American Physical Society.

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Colliding Black Holes: The Close Limit, Richard H. Price, Jorge Pullin Jan 1994

Colliding Black Holes: The Close Limit, Richard H. Price, Jorge Pullin

Faculty Publications

The problem of the mutual attraction and joining of two black holes is of importance as both a source of gravitational waves and as a testbed of numerical relativity. If the holes start out close enough that they are initially surrounded by a common horizon, the problem can be viewed as a perturbation of a single black hole. We take initial data due to Misner for close black holes, apply perturbation theory, and evolve the data with the Zerilli equation. The computed gravitational radiation agrees with and extends the results of full numerical computations. © 1994 The American Physical Society.

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File Allocation And Join Site Selection Problem In Distributed Database Systems., Pil Kyo Seo Jan 1994

File Allocation And Join Site Selection Problem In Distributed Database Systems., Pil Kyo Seo

LSU Historical Dissertations and Theses

There are two important problems associated with the design of distributed database systems. One is the file allocation problem, and the other is the query optimization problem. In this research a methodology that considers both these aspects is developed that determines the optimal location of files and join sites for given queries simultaneously. Using this methodology, three different mixed integer programming models that describe three cases of the file allocation and join site selection problem are developed. Dual-based procedures are developed for each of the three mixed integer programming models. Extensive computational testing is performed which shows that the dual-based …

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Eric Voegelin's Mystical Epistemology And Its Influence On Ethics And Politics., Charles Warren Burchfield Jan 1994

Eric Voegelin's Mystical Epistemology And Its Influence On Ethics And Politics., Charles Warren Burchfield

LSU Historical Dissertations and Theses

The primary purpose of this dissertation is to examine and analyze Eric Voegelin's theory of knowledge, and to see what implications it has on his theories of ethics and politics. The profundity of Voegelin's epistemological search and recovery is apparent when placed in the context of his disillusionment with and resistance to the dominant epistemology of his day, namely, positivism. Through a recovery and restoration of the symbolizations of classical and Christian philosophy, Voegelin searches for and finds experiential knowledge which is gained through faith in search of understanding (fides quaerens intellectum), which brings about a vision of the whole …

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Pairing And Quadrupole Interactions In The Pseudo-Su(3) Shell Model., Chairul Bahri Jan 1994

Pairing And Quadrupole Interactions In The Pseudo-Su(3) Shell Model., Chairul Bahri

LSU Historical Dissertations and Theses

Pseudo-SU(3) symmetry along with its simple symmetry-preserving and symmetry-breaking interactions is presented. This symmetry is a direct consequence of pseudo-spin symmetry which can be clearly seen in a single-particle shell model picture of heavy (A $\sbsp{\sim}{>}$ 100) atomic nuclei. Good pseudo-spin symmetry is shown to have its origin at a more fundamental level by considering relativistic mean field results for the strength parameters of the spin-orbit and the orbit-orbit interactions. As long as the residual interaction is a pseudo-spin scalar interaction, the many-particle extension of the single-particle picture is also expected to have,good total pseudo-spin symmetry. The quadrupole-quadrupole interaction …

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Modeling Transport Of Non Aqueous Wastes In Unsaturated Soils., Dharmesh Vinaychandra Doshi Jan 1994

Modeling Transport Of Non Aqueous Wastes In Unsaturated Soils., Dharmesh Vinaychandra Doshi

LSU Historical Dissertations and Theses

In evaluating risks associated with chemical spills on the ground surface or leaks from underground storage tanks, it is required to know the extent and degree of contamination in the subsurface. In many cases pure organics are spilled and due to their low miscibility with water they remain pure or concentrated for some distance or time from the source. This dissertation is aimed at developing a model of the multiphase (air, water, organic) migration processes. The particular focus is on modeling organic infiltration in the unsaturated zone where the transport is largely vertical. Sand-column experiments using a variety of immiscible …

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Murderous Historian: Henry Adams, Modernity, And The Problem Of Subjectivity. (Volumes I And Ii)., Martha Moseley Regalis Jan 1994

Murderous Historian: Henry Adams, Modernity, And The Problem Of Subjectivity. (Volumes I And Ii)., Martha Moseley Regalis

LSU Historical Dissertations and Theses

This study traces Henry Adams's evolution from an enlightenment historian to a prescient postmodern theorist, and explores how he came to regard his own intellectual history as paradigmatic of the arc of subjectivity in the West from the Middle Ages to Nietzsche and Bergson. Adams was a self-conscious philosophical nominalist, and he believed that his radical doubts about the capacity of language for embodying meaning had their origin in medieval nominalism. Adams found the seeds of modernity and the problem of subjectivity which were the focus of his own musings on the nature of the self and history in Abelard …

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New Teacher Attrition: The Case Of Louisiana., Carl Daniel Frantz Jan 1994

New Teacher Attrition: The Case Of Louisiana., Carl Daniel Frantz

LSU Historical Dissertations and Theses

This study explores district public policies and approaches in Louisiana that are likely to be effective in retaining new public classroom teachers. It does this by looking both at reasons for, and solutions to, new teacher attrition. It employs a combination of quantitative and qualitative methodologies. These include quantitative analysis of the teacher attrition experience in Louisiana parish school districts as well as relationships of district, teacher and student variables to new teacher attrition rates. The qualitative analysis uses information from teachers and administrators in one rural and one non rural set of school districts with widely differing new teacher …

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Temporal And Synoptic Analyses Of Heavy Rainfall In The Southeastern United States., Barry David Keim Jan 1994

Temporal And Synoptic Analyses Of Heavy Rainfall In The Southeastern United States., Barry David Keim

LSU Historical Dissertations and Theses

The abundance of recent heavy rainstorms in the southeastern United States has raised concerns that excessive rainstorms may be increasing in frequency and magnitude across the region. For this reason, the heavy rainfall climatology was examined to determine whether long-term trends exist within the historic climate record. In addition, the synoptic conditions leading to these events were examined. The synoptic weather patterns that generated storm events over a 75 mm (3 inches) threshold were classified using an all-inclusive manual weather typing system. Heavy rainfall events in the region were generated primarily by frontal weather systems (79 percent) followed by tropical …

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Biochemical Oxygen Demand Removal Reaction Rate Constants In Microbial Rock Plant Filter Treatment Systems., Bhaskar Kura Jan 1994

Biochemical Oxygen Demand Removal Reaction Rate Constants In Microbial Rock Plant Filter Treatment Systems., Bhaskar Kura

LSU Historical Dissertations and Theses

Microbial Rock Plant Filters (MRPFs) are capable of treating municipal wastewaters, particularly for the removal of biochemical oxygen demand (BOD) in an economic manner. There is no consensus on proper design for these treatment systems due to the limited performance data available on these recently developed systems (Reed, 1993). Variability of the BOD removal reaction rate constant is an important observation which has bearing on the design of these systems. Variability of BOD removal reaction rate constant along the filter length was modeled as a function of the variable microbial activity. The microbial activity was estimated using a modified fluorescein …

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A Paley-Wiener Theorem For All Two And Three-Step Nilpotent Lie Groups., Robert Reeve Park Jan 1994

A Paley-Wiener Theorem For All Two And Three-Step Nilpotent Lie Groups., Robert Reeve Park

LSU Historical Dissertations and Theses

A Paley-Wiener Theorem for all connected, simply-connected two and three-step nilpotent Lie groups is proved. If f $\epsilon \ L\sbsp{c}{\infty}({G}),$ where G is a connected, simply-connected two or three-step nilpotent Lie group such that the operator-valued Fourier transform $\\varphi(\pi)$ = 0 for all $\pi$ in E, a subset of G of positive Plancherel measure, then it is shown that f = 0 a. e. on G. The proof uses representation-theoretic methods from Kirillov theory for nilpotent Lie groups, and uses an integral formula for the operator-valued Fourier transform $\\varphi(\pi)$. It is also shown by example that the condition that G …

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Graphs In Number Theory., Leigh Ann Myers Jan 1994

Graphs In Number Theory., Leigh Ann Myers

LSU Historical Dissertations and Theses

In the 1930's L. Redei and H. Reichardt established methods for determining the 4-rank of the narrow ideal class group of a quadratic number field, Q($D\sp{1/2}).$ One of these methods involves determining the number of D-splittings of the discriminant, D, of the number field. Later, this method was revised so that we need only find the rank of a matrix over F$\sb2$. In some cases, these Redei matrices can be viewed as adjacency matrices of graphs or digraphs. In Chapter I we introduce the graphs and matrices mentioned above, the method for finding 4-ranks, and present some preliminary results on …

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Studies On The Diffusive Transport Of Hydrophobic Organic Chemicals In Bed Sediments., Gregory John Thoma Jan 1994

Studies On The Diffusive Transport Of Hydrophobic Organic Chemicals In Bed Sediments., Gregory John Thoma

LSU Historical Dissertations and Theses

Hydrophobic chemicals have accumulated in sediments for most of the last century as the result of industrial and municipal discharges as well as urban and agricultural runoff to surface waters. Beginning with the Clean Water Act, these pollutant sources have been significantly reduced resulting in the sediments becoming a source of pollutants to the overlying water ecosystem. It is therefore important to determine the rate at which the contaminants associated with the sediment are released to the water. Removal or isolation of sediment-associated contaminants is often desirable. One option for isolation of contaminated sediments from the aquatic ecosystem is capping, …

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