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A Feasibility Study Of Using Air-Lift Pumps For Aeration, Degasification, And Water Movement In A Recirculating Aquaculture System, John Clay Loyless Dec 1995

A Feasibility Study Of Using Air-Lift Pumps For Aeration, Degasification, And Water Movement In A Recirculating Aquaculture System, John Clay Loyless

LSU Historical Dissertations and Theses

A feasibility study of using air-lift pumps for water movement, aeration, and degasification in a recirculating aquaculture system was conducted. Fluid delivery tests of various air-lift configurations indicated that water flow is a function of the submergence depth, lift height, and air injection rate. The air-lift units were found to transfer 02 at only 1/5 to 1/2 the rate of comparably operated open-water aeration systems. The standard oxygen transfer rate (SOTR) increased with air injection from 1-7 scftn, however, the energy usage also increased, yielding a reduction in the standard aeration efficiency (SAE) from over 2 to less than 0.5 …

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On Matroid Connectivity, James Oxley, Haidong Wu Nov 1995

On Matroid Connectivity, James Oxley, Haidong Wu

Faculty Publications

If M is a loopless matroid in which M/vbX and M/vbY are connected and X∩Y is non-empty, then one easily shows that M/vb(X∪Y) is connected. Likewise, it is straightforward to show that if G and H are n-connected graphs having at least n common vertices, then G ∪ H is n-connected. The purpose of this note is to prove a matroid connectivity result that is a common generalization of these two observations. © 1995.

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Evaluation Of Alternative Crop Rotational Schemes For Cotton Production In Louisiana, Asitava Jana Oct 1995

Evaluation Of Alternative Crop Rotational Schemes For Cotton Production In Louisiana, Asitava Jana

LSU Historical Dissertations and Theses

Increasing economic importance of cotton production in Louisiana, awareness of the financial and environmental benefits of crop rotations have stressed the need for evaluating cotton production in different rotational schemes. The objective of this study was to estimate profitability of alternative crop rotational schemes within a whole farm context. Yield data for 11 alternative production systems involving cotton, soybean, corn, wheat were obtained from the ongoing crop rotation research at the Northeast Research Station during the period 1983 -1993. Th e systems included continuous, 2 year, and 3 year rotations on two soil types: silt and clay. Price data were …

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Double Exposure And Development Of Pmma Resist Using X-Ray Radiation, William M. Drout Iii Apr 1995

Double Exposure And Development Of Pmma Resist Using X-Ray Radiation, William M. Drout Iii

Honors Capstones

No abstract provided.

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Do Middle School Students Understand The Mathematics Necessary To Learn High School Science?, Lynn Toni Romanowski Apr 1995

Do Middle School Students Understand The Mathematics Necessary To Learn High School Science?, Lynn Toni Romanowski

Honors Capstones

No abstract provided.

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Alternative Equations Of Motion For The Radiating Electron, G. W. Ford, R. F. O'Connell Feb 1995

Alternative Equations Of Motion For The Radiating Electron, G. W. Ford, R. F. O'Connell

Faculty Publications

We have previously written down a simple second-order equation for the radiating electron and pointed out that its solutions are well behaved. A key feature of this equation is the presence of a term involving the time derivative of the external field f(t). Here, we show that a completely equivalent, but less elegant, equation may be written down which contains no derivatives of f(t) but, instead, an infinite number of derivatives of the coordinate. However, it has the merit of displaying explicitly how our result differs from that of Abraham-Lorentz. © 1995 Springer-Verlag.

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Gumbo Yearbook, Class Of 1995, Louisiana State University And Agricultural And Mechanical College Jan 1995

Gumbo Yearbook, Class Of 1995, Louisiana State University And Agricultural And Mechanical College

Gumbo Yearbook

The Gumbo yearbook chronicles the entire academic year at LSU. In words and especially photos, the Gumbo shows the people, places, and events that make each year unique. In addition to formal portraits of schools and departments, the book contains hundreds of snapshots of students with their friends and dozens of pages showcasing organizations.

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Self-Reported Factors That Influence Eighth Graders' Performance On Standardized Mathematics Tests: An Empirical Analysis., Joseph Appolinaire Meyinsse Jan 1995

Self-Reported Factors That Influence Eighth Graders' Performance On Standardized Mathematics Tests: An Empirical Analysis., Joseph Appolinaire Meyinsse

LSU Historical Dissertations and Theses

This study examined some of the factors that influence African-American and Caucasian eighth graders' performance on standardized mathematics tests. Specifically, I examined the effects of high and low achievers' beliefs and attitudes toward mathematics and perceptions of self, mathematics, teacher, school, and parents on their performance levels. I employed a two-phase design with qualitative and quantitative approaches. The qualitative phase focused on one grand-tour question: Considering the times you took standardized mathematics tests, would you please describe some of the things that affected your performance on those tests? Individual students and focus groups were the units of analysis. I interviewed …

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A Spatial Analysis Of Variation In Rural Real Estate Prices Across Homogeneous Land Market Areas In Louisiana., Gary A. Kennedy Jan 1995

A Spatial Analysis Of Variation In Rural Real Estate Prices Across Homogeneous Land Market Areas In Louisiana., Gary A. Kennedy

LSU Historical Dissertations and Theses

Rural land, exchanged for its productive or consumptive value, is considered to be a differentiated product with varying characteristics. Multivariate procedures and hedonic price analysis were used to evaluate the impact of rural land characteristics on rural land prices across homogeneous rural land market areas in Louisiana. Multivariate methods of principal component analysis and cluster analysis were used to group 59 Louisiana parishes into eight rural land submarkets based on 13 physical and socio-economic variables. Using a mail survey technique, 948 Louisiana rural land sales were collected. A geographic information system (GIS) analysis of these 948 sales indicated that sales …

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Reconceptualizing A Secondary Content Area Reading Course From A Phenomenological Perspective Using Reflections Of Preservice Teachers., Edith Grossman Mayers Jan 1995

Reconceptualizing A Secondary Content Area Reading Course From A Phenomenological Perspective Using Reflections Of Preservice Teachers., Edith Grossman Mayers

LSU Historical Dissertations and Theses

This study is the reconceptualization of a secondary education six credit hour content area reading course. Classroom and field experiences were modified to promote preservice teachers' reflections concerning what teaching is, who teachers are, and self-as-teacher. The purpose of the revised multifaceted course was to provide opportunities for students' rethinking of teaching as they were taught or teaching as they experienced such in student teaching. In addition, prior lived experiences and students' resistance to a course in content area reading were examined from a hermeneutic phenomenological perspective. The existing course classroom experience was modified to include reading autobiographies and construction …

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Educational Reform And The Social Democratic Party In Weimar Prussia, 1918-1932., Patricia Gebhart Mcfarland Jan 1995

Educational Reform And The Social Democratic Party In Weimar Prussia, 1918-1932., Patricia Gebhart Mcfarland

LSU Historical Dissertations and Theses

Education in Germany has historically been a matter for the individual states rather than the central government. In Prussia in the 1920s, elementary education was segregated by religious denomination, while the upper grades were divided according to occupational specialty. The Social Democratic Party was the only party which proposed to change the system, calling for the secularization and integration of the schools. When it unexpectedly found itself in power in November 1918, the party's commitment to its program was tested. While the leadership continued to affirm its support for educational reform throughout the 1920s, it did little to introduce any …

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Gulf Literacy: A Marine Science-Based Model Of Scientific Literacy., John Edward Trowbridge Jan 1995

Gulf Literacy: A Marine Science-Based Model Of Scientific Literacy., John Edward Trowbridge

LSU Historical Dissertations and Theses

A trend in science education reform is the move towards the goal of scientific literacy. Attributes of scientific literacy include: (a) understanding key concepts and principles of science; (b) understanding newspaper articles and graphics related to science issues; and (c) using scientific ways of evaluating evidence for individual and societal purposes (AAAS, 1989; Demastes & Wandersee, 1992). Furthermore, BSCS (1993) has proposed a model of biological literacy that includes four distinct levels (nominal, functional, structural, and multidimensional). The Gulf of Mexico and its coastal environments are of social, economic and scientific importance. An understanding of the Gulf of Mexico in …

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The Effects Of Metacognitive Advice And Control Of Sequence On Student Achievement And Attitude Toward Computer-Assisted Instruction And Content., Andrew Mark Holden Jan 1995

The Effects Of Metacognitive Advice And Control Of Sequence On Student Achievement And Attitude Toward Computer-Assisted Instruction And Content., Andrew Mark Holden

LSU Historical Dissertations and Theses

The purpose of the study was to investigate the effects of the CAI design features--metacognitive advice and control of instructional sequence upon student achievement and attitude toward the instructional program and content. The topic of the CAI was designing comparative research to control threats to internal validity. Four versions of the CAI were created based upon the combinations of the bi-level independent variables--metacognitive advice and control of instructional sequence. The participants of the study were graduate students from four departments at Louisiana State University. The independent variables were metacognitive advice, control of instructional sequence, and the participant's self-directed learning readiness …

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Data Analysis Using Reconstructability Theory., Deky Dicky Joe Gouw Jan 1995

Data Analysis Using Reconstructability Theory., Deky Dicky Joe Gouw

LSU Historical Dissertations and Theses

In this dissertation, we develop a new data analysis method using reconstructability theory, particularly k-systems theory. K-systems or Klir systems theory is a branch of reconstructability theory and provides a setting wherein common problems in statistics can be solved using the power of information theory by invoking the maximum entropy principle. The method is superior over classical statistical data analysis. The approach starts with the concept of variable interaction in reconstructability analysis (RA), We then use the RA definition of interaction to improve the quality of main and interaction effects in data analysis. With classical statistical data analysis, we need …

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An Examination Of Investor Evaluation Of Corporate Social Performance., Gisele Kay Jackson Jan 1995

An Examination Of Investor Evaluation Of Corporate Social Performance., Gisele Kay Jackson

LSU Historical Dissertations and Theses

This study examines the relative importance of criteria that investors consider when evaluating corporate social performance. Socially sensitive investing has increased in importance in the past two decades and the availability of information is key to effective social action. The Analytic Hierarchy Process (AHP) is used to determine the relative importance assigned to specific social criteria by representatives of socially or environmentally responsible mutual funds in the U.S. and abroad. A hierarchy of social criteria is developed. Five criteria enter into the evaluation of corporate social performance: community involvement, environment, fair business practices, human resources, and products and services. The …

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Robust Adaptive Control In H(Infinity)., Gisoon Kim Jan 1995

Robust Adaptive Control In H(Infinity)., Gisoon Kim

LSU Historical Dissertations and Theses

This dissertation addresses the problem of unifying identification and control in the paradigm of ${\cal H}\sb\infty$ to achieve robust adaptive control. To achieve robust adaptive control, we employ the same approach used for identification in ${\cal H}\sb\infty$ and robust control in ${\cal H}\sb\infty.$ In the modeling part, we aim not only to identify the nominal plant, but also to quantify the modeling error in ${\cal H}\sb\infty$ norm. The linear algorithm based on least-squares is used, and the upper bounds for the corresponding modeling error are derived. In the control part, we aim to achieve the performance specification in frequency domain …

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Multiresolution Techniques In Image Processing., Ramana L. Rao Jan 1995

Multiresolution Techniques In Image Processing., Ramana L. Rao

LSU Historical Dissertations and Theses

Multiresolution, an effective paradigm for signal processing, offers a natural, hierarchical view of information. As a computational tool, multiresolution can be applied to a variety of problems in signal and image processing. For instance, feature detection and extraction can be performed quickly and efficiently using a multiresolutional method to analyze images. This dissertation addresses the problems of segmentation and edge detection in images with particular emphasis on satellite images which display features of a fine nature, such as the Atlantic Gulf Stream. The dissertation also describes a portable toolkit, for conventional and multiresolutional image processing, that was developed to test …

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Estimation Of Genetic Parameters For Preweaning Growth Traits Of Crossbred Cattle., Denis Jose Salgado-Fonseca Jan 1995

Estimation Of Genetic Parameters For Preweaning Growth Traits Of Crossbred Cattle., Denis Jose Salgado-Fonseca

LSU Historical Dissertations and Theses

Data from a long-term rotational crossbreeding study involving Angus, Brahman, Charolais and Hereford cattle were analyzed to evaluate the importance of maternal effects on birth weight (BWT), weaning weight (WWT) and preweaning average daily gain (ADG) and, to estimate genetic parameters. Six different animal models were fitted for each trait, ranging from a single additive to a maternal animal model allowing for both genetic and environmental maternal effects and a genetic covariance between direct and maternal additive effects. Genetic effects were obtained using a maternal animal model allowing for a maternal additive effect and a direct-maternal additive covariance (Model 4). …

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Combinatorial Design And Analysis Of Optimal Multiple Bus Systems For Parallel Algorithms., Priyalal D. Kulasinghe Jan 1995

Combinatorial Design And Analysis Of Optimal Multiple Bus Systems For Parallel Algorithms., Priyalal D. Kulasinghe

LSU Historical Dissertations and Theses

This dissertation develops a formal and systematic methodology for designing optimal, synchronous multiple bus systems (MBSs) realizing given (classes of) parallel algorithms. Our approach utilizes graph and group theoretic concepts to develop the necessary model and procedural tools. By partitioning the vertex set of the graphical representation CFG of the algorithm, we extract a set of interconnection functions that represents the interprocessor communication requirement of the algorithm. We prove that the optimal partitioning problem is NP-Hard. However, we show how to obtain polynomial time solutions by exploiting certain regularities present in many well-behaved parallel algorithms. The extracted set of interconnection …

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Theoretical Studies Of Sodium Metal Clusters., Melissa R. Prince Jan 1995

Theoretical Studies Of Sodium Metal Clusters., Melissa R. Prince

LSU Historical Dissertations and Theses

Theoretical methods were used to study small sodium metal clusters. The goal was to find a simple way to model the electronic structure in these clusters that can be used to study large sodium clusters. Monte Carlo studies using Feynman's path integral formulation of quantum mechanics with Bose-Einstein statistics were used to study sodium metal clusters whose valence electrons with opposite spins were paired as bosons. Next, non-atom-based Gaussian s orbitals were used in a Hartree-Fock Monte Carlo procedure. Based on these results, standard quantum chemistry programs were used to test the utility of using non-atom-based basis sets made up …

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The Chemist In The College Chemistry Classroom: A Case Study Of Excellence., Anthony Quilah Zehyoue Jr Jan 1995

The Chemist In The College Chemistry Classroom: A Case Study Of Excellence., Anthony Quilah Zehyoue Jr

LSU Historical Dissertations and Theses

Prominent in the agenda of science education research nowadays are studies focusing on the science teacher/professor. Consequently, this study focuses on a particular chemistry professor at Louisiana State University. He was chosen because of his outstanding and award-winning teaching activities; his voluntary workshops for area high school chemistry teachers; and his active involvement with a college chemistry curriculum reform committee, serving as chairman of the committee. Additionally, his continuing accomplishments and engagements with inorganic chemistry research activities are noteworthy. He was studied for three semesters in his teaching of introductory level chemistry to a large freshman class and his teaching …

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Applications Of Some Robust Statistics In Forestry., Kunjin Shi Jan 1995

Applications Of Some Robust Statistics In Forestry., Kunjin Shi

LSU Historical Dissertations and Theses

All statistical procedures are based on a set of assumptions, such as normality, independence and linearity. In practical applications, these assumptions can rarely be satisfied completely. Deviation from classical parametric assumptions may result in loss of efficiency or even lead to misleading conclusions. Robust statistics that have been extensively studied in the past two decades provide alternatives to deal with such problems. This research was designed to investigate the applicability of robust estimation of population means and robust linear regression in forestry. Five robust estimators, Huber's minimax estimator, Hampel's three parameter redescending estimator, Andrew's wave estimator, Tukey's biweight estimator, and …

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Articulation Of French Programs Between Secondary And Postsecondary Institutions: Language And Culture Performance Achieved By High School Students Enrolled In French Ii And College Students Enrolled In Second Semester Of French., Fatima Chajia Jan 1995

Articulation Of French Programs Between Secondary And Postsecondary Institutions: Language And Culture Performance Achieved By High School Students Enrolled In French Ii And College Students Enrolled In Second Semester Of French., Fatima Chajia

LSU Historical Dissertations and Theses

The purpose of this dissertation was to examine whether or not there are differences in the performance achieved by high school students (enrolled in French II) and college students (enrolled in second semester of French), on tests of culture, listening, reading, grammar, speaking and writing. The results from the background questionnaires and the six tests show that: (1) Selfplacement is the most common procedure used by university false-beginners; (2) Overall, college students scored significantly higher than their high school counterparts on all six tests; (3) College true- and false-beginners scored significantly higher than high school students on tests of listening, …

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Parallelization Of Reconstructability Analysis Algorithms., Patti E. Iles Jan 1995

Parallelization Of Reconstructability Analysis Algorithms., Patti E. Iles

LSU Historical Dissertations and Theses

Bush Jones published a series of papers providing sequential algorithms that are key to reconstructability analysis. These algorithms include the determination of unbiased reconstructions and a greedy algorithm for a generalization of the reconstruction problem. The implementation of these sequential algorithms provide scientists and mathematicians with the means of utilizing reconstructability analysis in systems modeling. The algorithms, however, are so computationally intensive that the system is limited to a very small set of variables. Many papers have been written applying reconstructability analysis and maximum entropy methods to various disciplines. Reconstructability analysis has the potential of dramatically impacting the scientific community, …

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Linguistic And Cultural Immersion And Second Language Acquisition: International Young Student Exchange., Rosita Mira Maristany Jan 1995

Linguistic And Cultural Immersion And Second Language Acquisition: International Young Student Exchange., Rosita Mira Maristany

LSU Historical Dissertations and Theses

The trend in foreign language learning reflects a move from "fragmented" language to "whole" language (Rigg 1991). It includes the individual as well as the social aspect of language acquisition; and the integration of language and culture. Student international exchange programs provide the ideal atmosphere for "whole" language learning and the integration of language and culture in total language and cultural immersion. Most research in international student exchange programs described the organization of the program or addressed a particular variable. There is a need for integrative "whole" research rather than "fragmented" research. The method chosen as most appropriate for this …

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Investigation In The Theory Of Stochastic Processes., Xiao Liang Li Jan 1995

Investigation In The Theory Of Stochastic Processes., Xiao Liang Li

LSU Historical Dissertations and Theses

In Chapter I of this dissertation, we present a pedagogical introduction to the basic concepts of stochastic theory and review the progress made as well as the outstanding unsolved problems in the field. For the rest of this dissertation, we use a generalized quantum Langevin equation (GLE) approach to investigate various properties of quantum dissipative systems. In Chapter II, calculations for the displacement and random force correlation functions for Brownian motion are generalized to the case of an arbitrary heat bath for a damped harmonic quantum oscillator. The mean square displacement of such an oscillator is then evaluated for both …

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Multiresolutional Fault-Tolerant Sensor Integration And Object Recognition In Images., Lakshman Prasad Jan 1995

Multiresolutional Fault-Tolerant Sensor Integration And Object Recognition In Images., Lakshman Prasad

LSU Historical Dissertations and Theses

This dissertation applies multiresolution methods to two important problems in signal analysis. The problem of fault-tolerant sensor integration in distributed sensor networks is addressed, and an efficient multiresolutional algorithm for estimating the sensors' effective output is proposed. The problem of object/shape recognition in images is addressed in a multiresolutional setting using pyramidal decomposition of images with respect to an orthonormal wavelet basis. A new approach to efficient template matching to detect objects using computational geometric methods is put forward. An efficient paradigm for object recognition is described.

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A Formal Methodology For Deriving Purely Functional Programs From Z Specifications Via The Intermediate Specification Language Funz., Linda Bostwick Sherrell Jan 1995

A Formal Methodology For Deriving Purely Functional Programs From Z Specifications Via The Intermediate Specification Language Funz., Linda Bostwick Sherrell

LSU Historical Dissertations and Theses

In recent years, both formal methods and software reuse have been increasingly advocated as a means of alleviating the ills of the software crisis. During this same time period, purely functional programming languages, which have a long history in the realm of rapid prototyping, have emerged as a viable medium for real-world applications. Since these trends are likely to continue, this work describes a methodology that facilitates the derivation of purely functional programs from existing Z specifications. A unique aspect of the methodology is its incorporation of an intermediate specification language (FunZ) during the design phase of software development. Most …

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Principal Behaviors In Special Education: Secondary School Climate., Diane Simmons Brown Jan 1995

Principal Behaviors In Special Education: Secondary School Climate., Diane Simmons Brown

LSU Historical Dissertations and Theses

This study examines the relationship of the high school principal and school climate with regard to special education. Perceptions of principals and general and special education teachers regarding school climate were measured by the Organizational Climate Description Questionnaire-Rutgers Secondary (OCDQ-RS) (Hoy, Tarter and Kottkamp, 1991). Perceptions of principal behaviors with regard to special education were measured by the Special Education Principal Behavior Profile (SEPBP), developed as a portion of this study. Findings suggested that principals and special education teachers have significantly different perceptions of school climate. Principal behaviors related to special education which were moderately correlated with the openness factor …

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The Effect Of Structured Task Presentations And Reinforcement On Attention, Achievement, And Attitude Of Selected High School Choirs., Dwayne E. Dunn Jan 1995

The Effect Of Structured Task Presentations And Reinforcement On Attention, Achievement, And Attitude Of Selected High School Choirs., Dwayne E. Dunn

LSU Historical Dissertations and Theses

This study nested a behavioral design within an experimental design to observe performance improvement after structuring the presentation of musical academic tasks, and to examine the effect of teacher reinforcement on student attentiveness, musical achievement, and attitude in choral ensembles. Two high school choral music classes (N = 60) were assigned intact to one of two treatments. The No Feedback Group (n = 29) received task presentations and directions followed by student performance and no verbal/facial teacher reinforcement. The Feedback Group (n = 31) received task presentations, directions, student performance, and teacher reinforcement. Three similar choral music excerpts were edited …

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