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1999

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Sediment And Particulate Organic Carbon Transport Dynamics In The Barataria Basin, Louisiana., John Gregory Booth Jan 1999

Sediment And Particulate Organic Carbon Transport Dynamics In The Barataria Basin, Louisiana., John Gregory Booth

LSU Historical Dissertations and Theses

The transport of sediment and particulate organic carbon (POC) in the Barataria Basin was examined using techniques from the fields of geochemistry, remote sensing and environmental modeling. Monthly (deposition) and decadal (burial) rates of sediment and POC transport were quantified from bottom sediment samples. Sediment and POC deposition rates, based on 7Be inventories, ranged from -1.6E3 to 1.42E4 g m-2 yr-1 and 122 to 1066 g C m-2 yr-1, respectively. Sediment and POC burial rates, based on excess 210Pb down-core distributions, ranged from 3.8E2 to 2.0E3 g m-2 yr-1 and 27 to 37 g C in 2 yr-1, respectively. Deposition …

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Analysis Of Non-Linear Formation Fracture Resistance Tests Obtained During Oil Well Drilling Operations., Gursat Altun Jan 1999

Analysis Of Non-Linear Formation Fracture Resistance Tests Obtained During Oil Well Drilling Operations., Gursat Altun

LSU Historical Dissertations and Theses

A leak-off test (LOT), commonly known as formation pressure integrity test (PIT), is a verification method to estimate the fracture pressure of exposed formations. After cementing each casing string, a LOT is run to verify that the casing, cement, and formation below the casing seat can withstand the wellbore pressure required to drill safely to the next casing setting depth. Fracture pressure determined from the test is used as the maximum pressure that may be imposed on that formation. Critical drilling decisions for mud weights, casing setting depths, and well control techniques are based upon the result of a LOT. …

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A Transformational Reengineering System That Supports Software Maintenance Using A Graph Representation For The Identification Of An Object-Oriented Software Architecture., Ramachenga Reddy Valasareddi Jan 1999

A Transformational Reengineering System That Supports Software Maintenance Using A Graph Representation For The Identification Of An Object-Oriented Software Architecture., Ramachenga Reddy Valasareddi

LSU Historical Dissertations and Theses

The process of maintenance and enhancement of legacy software systems is a laborious and unavoidable task. Often these systems lack structure or modularity, as they were developed using programming languages and paradigms that do not incorporate object-oriented features and sound design principles. The software engineer's task can be simplified if tools are available to identify object like features in the code. These tools can help transform the non-object-oriented code to object oriented code. This research describes a comprehensive and systematic process for transformational reengineering of legacy systems. Research in reengineering is mainly focused on clustering techniques that group procedures present …

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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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Design Of Work-Rest Schedules For Vdt Operators., Rana Balci Jan 1999

Design Of Work-Rest Schedules For Vdt Operators., Rana Balci

LSU Historical Dissertations and Theses

The number of musculoskeletal and psychological discomforts is increasing as a result of continuing growth of VDT work. Although ergonomic improvements in workstation design can be applied, an effective work-rest schedule is an economical way to reduce these problems. The objective of this research was to determine an effective work-rest schedule for VDT operators. In addition to a discomfort questionnaire, performance and electromyography measurements from trapezius and flexor carpi radialis were used. Three different work-rest schedules were applied: 60-minute work/10-minute rest, 30-minute work/5-minute rest, and for the third schedule, the subjects received four breaks from VDT work each hour additional …

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Natalie Vivian Scott: The Origins, People And Times Of The French Quarter Renaissance (1920-1930)., John Wyeth Scott Ii Jan 1999

Natalie Vivian Scott: The Origins, People And Times Of The French Quarter Renaissance (1920-1930)., John Wyeth Scott Ii

LSU Historical Dissertations and Theses

This is the interwoven story of Natalie Vivian Scott, war hero, author, adventurer and humanitarian, and the French Quarter Renaissance during the 1920s, when Natalie Scott was a vital member of the talented coterie of writers and artists whose talents prospered there, including Sherwood Anderson, William Faulkner, William Spratling, Lyle Saxon, Roark Bradford, Oliver La Farge, John Dos Passos, Hamilton Basso, Meigs Frost, among others. This work's premise is that the decayed, crumbling French Quarter, falling into irreversible decline, was saved during the early 1920s by an outburst of local creativity and organizational energy that inspired restoration and a unique, …

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Barium In Water And Foraminiferal Shells: Indicator Of Oceanographic Conditions In The Gulf Of Mexico Since The Late Pleistocene., Thomas Peter Buerkert Jan 1999

Barium In Water And Foraminiferal Shells: Indicator Of Oceanographic Conditions In The Gulf Of Mexico Since The Late Pleistocene., Thomas Peter Buerkert

LSU Historical Dissertations and Theses

The Gulf of Mexico offers an appropriate setting for studying the chemical dynamics at the continent-ocean interface. In addition, its sediments preserve the climatic records of the past. This study employs Ba as a tracer to examine several aspects of modern Gulf oceanographic processes and seeks to unravel Gulf paleoceanography using Ba/Ca ratios from fossil foraminiferal shells. Comparison of dissolved Ba in the Mississippi and Atchafalaya River mixing zones suggests different Ba distributions can occur as a result of hydrodynamic and morphologic variability. Rapid Ba desorption from suspended material occurs near the Mississippi River, while Ba input from the shallow …

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Design Recovery And Data Mining: A Methodology That Identifies Data-Cohesive Subsystems Based On Mining Association Rules., Carlos Montes De Oca Jan 1999

Design Recovery And Data Mining: A Methodology That Identifies Data-Cohesive Subsystems Based On Mining Association Rules., Carlos Montes De Oca

LSU Historical Dissertations and Theses

Software maintenance is both a technical and an economic concern for organizations. Large software systems are difficult to maintain due to their intrinsic complexity, and their maintenance consumes between 50% and 90% of the cost of their complete life-cycle. An essential step in maintenance is reverse engineering, which focuses on understanding the system. This system understanding is critical to avoid the generation of undesired side effects during maintenance. The objective of this research is to investigate the potential of applying data mining to reverse engineering. This research was motivated by the following: (1) data mining can process large volumes of …

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Precursors For Chemical And Photochemical Vapor Deposition Of Copper Metal., Alicia Marie James Jan 1999

Precursors For Chemical And Photochemical Vapor Deposition Of Copper Metal., Alicia Marie James

LSU Historical Dissertations and Theses

The colorless square-planar cluster [CuN(SiMe3)2] 4, which contains four Cu(I) ions with four bridging amide groups, was studied as a precursor for chemical and photochemical vapor deposition of Cu metal. The cluster phosphoresces in CH2Cl2 solution and in the solid state at room temperature. Its electronic spectrum in CH 2Cl2 consists of two intense bands which are assigned to symmetry-allowed 3d → 4p transitions; the phosphorescence is also likely to be metal-centered. Solid [CuN(SiMe3)2]4 luminesces with approximately the same spectrum as that of the CH2Cl2 solutions. At 77 K, the solid-state luminescence red-shifts slightly. The emission lifetime in glassy Et2O …

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Interactions On Minerals And Organic Materials Along The Salinity Gradient In Barataria Basin, Louisiana., Jessica Anne Kastler Jan 1999

Interactions On Minerals And Organic Materials Along The Salinity Gradient In Barataria Basin, Louisiana., Jessica Anne Kastler

LSU Historical Dissertations and Theses

Changes in the associations among mineral and organic materials in estuaries may control the nature and quantity of organic material (OM) preserved in sediment deposits or cycled in the water column. Estuarine sediment-OM attachments were examined using descriptive analyses and experiments to assess their response to salinity changes and the bioavailability of sedimentary OM. Desorption experiments compared the amount of organic carbon extracted from sediment in rinses of different salinity. Uptake experiments monitored changes in carbon and bacteria concentrations to compare the bioavailability of dissolved and sedimentary OM. Clay mineralogy, surface area and elemental analysis of suspended and deposited sediment …

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Holding Back The Waters: Land Development And The Origins Of Levees On The Mississippi, 1720-1845., Jeffrey Alan Owens Jan 1999

Holding Back The Waters: Land Development And The Origins Of Levees On The Mississippi, 1720-1845., Jeffrey Alan Owens

LSU Historical Dissertations and Theses

Man's efforts to control flooding on the Mississippi began about 280 years ago, but the first 130 years has been neglected in scholarly literature. In spite of abundant primary sources, most histories of flood control on the Mississippi revolve around hydraulic engineering and the contributions of state and federal levee bureaucracies---factors which had almost no impact on the creation of the levee system. Engineers did install the first levee at New Orleans and levees on their own plantations in the 1720s, but the extension of the levee line thereafter was almost entirely the work of private land developers supervised at …

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The Role Of Financial Aid Counseling In Students' Understanding Of Student Loan Management., Julia Young Porter Jan 1999

The Role Of Financial Aid Counseling In Students' Understanding Of Student Loan Management., Julia Young Porter

LSU Historical Dissertations and Theses

This exploratory research study examined public university students' perceptions about their own loan debt management knowledge and about the counseling practices used to prepare them for their loan responsibilities. From the target population of all students enrolled at Louisiana State University during the Spring 1999 Semester, a systematic random sample was selected. Of the 1,204 students who participated in the study, 433 had loans. The 34-question survey instrument included 11 demographic characteristic questions and 1 open-ended question asked of all respondents. Two additional demographic questions and 20 perception statements about the loan process were asked of loan recipients. This study …

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Progressive Civic Development And Political Conflict: Regular Democrats And Reformers In New Orleans, 1896-1912., Robert Louis Dupont Jan 1999

Progressive Civic Development And Political Conflict: Regular Democrats And Reformers In New Orleans, 1896-1912., Robert Louis Dupont

LSU Historical Dissertations and Theses

The 1896 elections in Louisiana produced a Regular Democrat as governor, but a reform government within New Orleans. The turbulence of the Populist era led to the unification of political factions behind disfranchisement of blacks and a narrowing of the electorate. In spite of attempts to make their triumph permanent, New Orleans reformers gave way to a resurgent Regular Democratic organization, the Choctaw Club, which dominated city politics for the first half of the twentieth century. Mayors Paul Capdevielle and Martin Behrman successfully led the city in an era of commercial expansion, public works, and municipal reform. That leadership persisted …

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The Names Project Aids Memorial Quilt: A Novelistic Approach To Decoding The Layers Of Meaning In The "Pieced" Social Drama., Louis Edward Myers Jan 1999

The Names Project Aids Memorial Quilt: A Novelistic Approach To Decoding The Layers Of Meaning In The "Pieced" Social Drama., Louis Edward Myers

LSU Historical Dissertations and Theses

In this study, I focus on the AIDS crisis as a social drama, and evaluate the various functions the AIDS Memorial Quilt plays within that drama. Using Victor Turner's concept of social drama I first discuss the breach, crisis, redression, and reintegration stages. I identify two fundamental breaches in the AIDS drama---the health breach and the moral/religious breach. As regards the crisis phase of the drama, I identify specific crisis performers and performances. Although many attempts were made at redression, I conclude that most attempts were not successful as redressive acts. Rather than "solve" or "set straight" particular issues within …

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An Evaluation Of Noncontingent Reinforcement Effects As A Function Of Baseline Reinforcement Schedules., Joel Eric Ringdahl Jan 1999

An Evaluation Of Noncontingent Reinforcement Effects As A Function Of Baseline Reinforcement Schedules., Joel Eric Ringdahl

LSU Historical Dissertations and Theses

An evaluation of fixed-time (FT) schedules and extinction was conducted with children who had mild to severe developmental disabilities. The principal research question was: Does the similarity between baseline (i.e., response-dependent) and FT reinforcement rates make behavior resistant to change? During Phase I for each of 13 participants, a reinforcer assessment was conducted. Those individuals for whom a reinforcement effect was demonstrated continued to Phase II. During Phase II, the effects of FT schedules with either similar or dissimilar reinforcer rates (relative to a response-dependent baseline) and extinction were assessed for each participant. Results suggested that both extinction and FT …

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Discriminative Validity Of The Wide-Range Assessment Of Memory And Learning (Wraml) With Children With And Without Attention-Deficit/Hyperactivity Disorder (Adhd)., Heather Brewis Scheffler Jan 1999

Discriminative Validity Of The Wide-Range Assessment Of Memory And Learning (Wraml) With Children With And Without Attention-Deficit/Hyperactivity Disorder (Adhd)., Heather Brewis Scheffler

LSU Historical Dissertations and Theses

The present study examined the discriminative validity of the Wide Range Assessment of Memory and Learning (WRAML), using the individual subscales, original indexes, and a factor structure proposed by Burton, Donders, and Mittenberg (1996) that includes an Attention factor. The sample consisted of 57 non-learning disordered children who were enrolled in the first through the seventh grade and met criteria for Attention-Deficit/Hyperactivity Disorder (ADHD) and 62 Control children. The groups were matched by age, race, SES, and estimated intellectual ability. Group comparisons by MANCOVA revealed that, after controlling for the effects of math and reading achievement, differences between the groups …

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Chromosomal Location Of Genes For Leafiness (Lfy1) And Susceptibility To Nicosulfuron (Nsf1) In Maize Genome., Orlando Jose Moreno Jan 1999

Chromosomal Location Of Genes For Leafiness (Lfy1) And Susceptibility To Nicosulfuron (Nsf1) In Maize Genome., Orlando Jose Moreno

LSU Historical Dissertations and Theses

Genes that may confer resistance to diseases, tolerance to plant stress, good stalk quality, high yield potential and/or other desirable attributes are important. The leafy gene (Lfy1Lfy1) discovered in 1971 in maize (Zea mays L.) is known to produce much higher yields in hybrids that possess it. These hybrids suffer much less stalk lodging than those with the non-leafy (lfy1 lfy1) gene. The location of the leafy gene to a chromosome arm could facilitate both its transfer from one genotype to another and its use in linkage studies and aid in completing the maize linkage map. The purpose of this …

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A Critical Analysis Of Gender And The Role Of The Research Assistantship In Development Of Higher Education Faculty., Stephen Charles Scott Jan 1999

A Critical Analysis Of Gender And The Role Of The Research Assistantship In Development Of Higher Education Faculty., Stephen Charles Scott

LSU Historical Dissertations and Theses

This research is a mixed model study that explores the relationship between the research assistantship and development as a researcher for individuals serving as professors of higher education in Research I institutions. Also of interest in this research are the ways that research assistantship experiences vary based on gender and other identity characteristics such as rank, age, and race. Critical inquiry is used as the theoretical framework for this study given that it incorporates the use of both quantitative and qualitative means of data collection. A major quantitative finding from this study demonstrates that there were significant differences in the …

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A Description And Analysis Of The Scholarly Response Paper As An Academic Genre: Determining How Linguistic, Social, And Psychological Variables Affect Its Success/Failure And The Professional Credibility Of Its Author., Lynna Dunn Peneguy Jan 1999

A Description And Analysis Of The Scholarly Response Paper As An Academic Genre: Determining How Linguistic, Social, And Psychological Variables Affect Its Success/Failure And The Professional Credibility Of Its Author., Lynna Dunn Peneguy

LSU Historical Dissertations and Theses

The study of various documents and genres within professional discourse communities can provide valuable insight into what does or does not constitute successful written communication within such groups. The primary purpose of the current study was to examine scholarly response papers published in five different "English" journals in order to (1) define and describe the scholarly response paper and (2) explore various theories/rules/studies which could be used to gauge its success: in this case, Grice's Maxims, studies of semantic (denotative and evaluative) verb force, Lakoff's Rules of Politeness, and studies of language intensity. Findings showed that the primary purpose of …

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Behavior Of Bensulfuron-Methyl As Affected By Soil Factors And Rice Management Aspects., Randall Otto Wilde Jan 1999

Behavior Of Bensulfuron-Methyl As Affected By Soil Factors And Rice Management Aspects., Randall Otto Wilde

LSU Historical Dissertations and Theses

Multi-source regression models describing the control of alligatorweed with bensulfuron-methyl as influenced by rate and temperature were developed under field conditions. Temperature models describing the activity of bensulfuron-methyl at 21 to 84 g ai/ha on alligatorweed were linear 7 days after treatment (DAT) and quadratic 14 and 28 DAT. At 7 and 14 DAT, a minimum average temperature of 14 C was required for bensulfuron-methyl activity on alligatorweed. The temperatures for optimal alligatorweed control with bensulfuron-methyl at 14 DAT ranged from 21 to 24 C with rates of 21 to 84 g/ha. Temperatures for optimal alligatorweed control with bensulfuron-methyl at …

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Spatial Modeling Of Coastal Landscapes: Methodological And Scientific Applications., Mary Louise White Jan 1999

Spatial Modeling Of Coastal Landscapes: Methodological And Scientific Applications., Mary Louise White

LSU Historical Dissertations and Theses

A number of issues related to landscape scale ecological modeling of the wetlands of southern Louisiana are examined in this study. First, using geostatistical methods, a new contour map of the wetland habitats in the Terrebonne basin of southern Louisiana is constructed from data collected in 1994. This map is proposed as the best field verified habitat map of the Terrebonne basin and contains statistical confidence intervals associated with the habitat contours. Second, the problem of how to evaluate the success of a landscape model prediction is investigated. The multiple resolution goodness of fit parameter Ft(k) is evaluated in detail …

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Spectrum Of Solar Neutrinos Above 6.5 Mev., Robert Ellis Sanford Jr Jan 1999

Spectrum Of Solar Neutrinos Above 6.5 Mev., Robert Ellis Sanford Jr

LSU Historical Dissertations and Theses

The spectrum of recoil electrons from solar neutrino scattering above 6.5 MeV has been measured using the first 504 days of Super-Kamiokande detector data. The scattering rate is found to be 13.56 +/- 0.42(stat. ) +/- 0.29(syst.) events/day/22.5kton, which is a factor of 0.474 +/- 0.015(stat.) +/- 0.010( syst.) of the expected rate. The measured spectrum and the expected spectra from 8B and HeP Neutrino scattering are compared using a chi2 minimization process to find the best-fit match between the measured neutrino rates and a linear combination of the expected rates from 8B and HeP neutrinos. Using only the 8B …

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Enhancing The Process Of Testing Object -Oriented Systems., Ihssan Salim Alkadi Jan 1999

Enhancing The Process Of Testing Object -Oriented Systems., Ihssan Salim Alkadi

LSU Historical Dissertations and Theses

Testing is a crucial step in the overall system development process. Using testing techniques that support features of the underlying software paradigm more effectively tests program than do testing techniques that support features of other paradigms. Systems developed with the object-oriented paradigm require techniques that support object-oriented features such as inheritance, data abstraction, encapsulation, and dynamic binding. Many techniques that are used to test systems developed with the structured paradigm are not sufficient for the testing of object-oriented systems. The goal of this research is to develop methods that will improve the process of testing object-oriented systems. Specifically, emphasis is …

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Quantitative Modeling And Information System Support For Just -In -Time Partnership., Faisal Badi Al-Khateeb Jan 1999

Quantitative Modeling And Information System Support For Just -In -Time Partnership., Faisal Badi Al-Khateeb

LSU Historical Dissertations and Theses

Just-in-Time (JIT) supply calls for frequent, small deliveries, which arrive on time, with the quantity and quality required. For JIT to be effective there should be a cooperative relationship between the buyer and the supplier. They should work together to enhance their competitive positions in the market place. This study extends the quantitative models published in the literature to provide more realistic models for JIT operations and evaluates the costs and benefits of JIT partnerships to help in the negotiation process between the partners. We provide a new model for the optimization of the joint total relevant cost of the …

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Powerless Speech: The Effects Of Gender, Gendered Intensifiers, And Attitudes Toward Women On Speaker Credibility., Frances E. Brandau-Brown Jan 1999

Powerless Speech: The Effects Of Gender, Gendered Intensifiers, And Attitudes Toward Women On Speaker Credibility., Frances E. Brandau-Brown

LSU Historical Dissertations and Theses

The purpose of this study was to examine powerful and powerless speech styles in relation to sex of speaker, sex of respondent, and attitudes toward women. Based on research by Bradac, Mulac, and Thompson (1995) it was proposed that the powerless speech style variable, intensifiers, could be divided into separate masculine and feminine domains. The Attitude Toward Women scale was used to classify respondents as either liberal or traditional. From this classification predictions were made using Expectancy Violation Theory to formulate a priori hypotheses about respondent perceptions of speaker competence, trustworthiness, and masculinity. Multivariate, univariate and post-hoc tests revealed that …

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The Laser Optogalvanic Effect In Radio Frequency Plasma: Applications In Analytical Chemistry., Xuan Yao Jan 1999

The Laser Optogalvanic Effect In Radio Frequency Plasma: Applications In Analytical Chemistry., Xuan Yao

LSU Historical Dissertations and Theses

The laser optogalvanic effect (LOGE) is the change of electrical impedance of a plasma produced by resonant absorption of laser radiation. Selected excitations can be used to detect specific species by tuning the laser to an appropriate wavelength. For optimum utilization of LOGE as a detection tool, one must understand the temporal profile of the LOGE signal in terms of the various processes occurring in the plasma. In this work, the characteristics of the LOGE signal and the potential applications of laser optogalvanic spectroscopy (LOGS) have been investigated. First, by analyzing the LOGE signal profiles of the neon excitations 1s2,4→2p1,3, …

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On The Numerical Solution Of The Cylindrical Poisson Equation For Isolated Self -Gravitating Systems., Howard Saul Cohl Jan 1999

On The Numerical Solution Of The Cylindrical Poisson Equation For Isolated Self -Gravitating Systems., Howard Saul Cohl

LSU Historical Dissertations and Theses

This dissertation addresses the need for an accurate and efficient technique which solves the Poisson equation for arbitrarily complex, isolated, self-gravitating fluid systems. Generally speaking, a potential solver is composed of two distinct pieces: a boundary solver and an interior solver. The boundary solver computes the potential, phi(xB) on a surface which bounds some finite volume of space, V, and contains an isolated mass-density distribution, rho(x). Given rho(x) and phi(xB), the interior solver computes the potential phi(x) everywhere within V. Herein, we describe the development of a numerical technique which efficiently solves Poisson's equation in cylindrical coordinates on massively parallel …

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Restructuring Object -Oriented Designs Using A Metric-Driven Approach., Ghassan Salim Alkadi Jan 1999

Restructuring Object -Oriented Designs Using A Metric-Driven Approach., Ghassan Salim Alkadi

LSU Historical Dissertations and Theses

The benefits of object-oriented software are now widely recognized. However, methodologies that are used to develop object-oriented software are still in their infancy. There is a lack of methods to assess the quality of the various components that are derived during the development process. The design of a system is a crucial component derived during the system development process. Little attention has been given to assessing object-oriented designs to determine the goodness of the designs. There are metrics that can provide guidance for assessing the quality of the design. The objective of this research is to develop a system to …

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The Role Of Trait And State Anxiety In Semantic Network Organization Of Information Related To Current Concerns., Gretchen Joan Diefenbach Jan 1999

The Role Of Trait And State Anxiety In Semantic Network Organization Of Information Related To Current Concerns., Gretchen Joan Diefenbach

LSU Historical Dissertations and Theses

In the first study of this report empirically-derived cognitive networks were established for high trait test anxious participants ( n = 28) and low trait test anxious participants (n = 25) during periods of both high and low exam stress. Cognitive networks were created using the Pathfinder algorithm, which transforms pair-wise word similarity ratings into an associative network. Information included in the networks pertained to the following word categories: testing situations, positive performance evaluation, and negative performance evaluation. Contrary to predictions, there was no effect of either trait or state test anxiety on semantic network organization. These findings fail to …

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The Effect Of *Modeling And Tempo Gradations As Practice Techniques On The Performance Of High School Instrumentalists., Paul Thomas Henley Jan 1999

The Effect Of *Modeling And Tempo Gradations As Practice Techniques On The Performance Of High School Instrumentalists., Paul Thomas Henley

LSU Historical Dissertations and Theses

The purpose of this study was to examine the effect of modeling conditions and tempo gradations as practice techniques on the performance of high school instrumentalists. Specifically, the independent variables of this study were model versus no model; and steady increase of tempo versus performance speed tempo versus alternating (slower and faster) tempos. Subjects (N = 60) were high school wind instrumentalists from the Midwest and the South. Subjects sight-read an etude, practiced the same etude six times using one of six distinct practice conditions, which were combinations of the two independent variables, and performed a posttest on the same …

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