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Performance Assessment And English Skill., Zhenghe Zhang Jan 2000

Performance Assessment And English Skill., Zhenghe Zhang

LSU Historical Dissertations and Theses

Recent developments in the philosophy of validity, highlighting the importance of investigating the consequences of assessment use, provide theoretical support for the move toward performance assessment. Numerous issues related to the choice of assessment approach (e.g., multiple-choice or performance-based) are not well understood today. This study investigated the potential interaction between assessment approach and the English skill of the examinee and the similarity of the information provided by multiple-choice and essay writing tests. Four hypotheses were examined in this study. Hypothesis 1 results indicated that students who were native speakers of English (regular students) achieved higher scores on the writing …

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Domestic Labor And The Earnings Of Professionals., Rebecca Sue Carter Jan 2000

Domestic Labor And The Earnings Of Professionals., Rebecca Sue Carter

LSU Historical Dissertations and Theses

This dissertation focuses on how time allocated to domestic responsibilities affects the earnings of professionals. Although the earnings gap between women and men has narrowed, women are paid less than their male counterparts and a substantial part of the gender earnings gap remains unexplained. Women's growing entry into the full-time labor force has created new challenges for working women and dual-earner families. Professionals may manage domestic responsibilities differently than non professionals because they are likely to have jobs that offer higher pay and more autonomy. With fewer domestic demands placed on these households, we would expect to observe more gender …

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A Behavior Analytic Approach To Developing Mathematics Skills In Second Graders: A Precision Teaching Intervention., Bruce Pierce Mortenson Jan 2000

A Behavior Analytic Approach To Developing Mathematics Skills In Second Graders: A Precision Teaching Intervention., Bruce Pierce Mortenson

LSU Historical Dissertations and Theses

This study examined the relative effects of two rates of responding on student endurance, accuracy and retention of basic math skills. Three cohorts, each consisting of four students, participated in the study and received training on two separate math skills. One skill was trained to a rate of responding consistent with a fluency standard and the other skill was trained to a rate of responding consistent with accurate but not fluent performance. The main finding underscored by the present study is that successful learning is enhanced if precipitated by fluent rates of responding. The data presented in each cohort demonstrated …

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Linear Codes Defined From Higher -Dimensional Varieties., Gary Lynn Salazar Jan 2000

Linear Codes Defined From Higher -Dimensional Varieties., Gary Lynn Salazar

LSU Historical Dissertations and Theses

We establish an algebraic foundation to complement the improved geometric codes of Feng and Rao. Viewing linear codes as affine variety codes, we utilize the Feng-Rao minimum distance bound to construct codes with relatively large dimensions. We examine higher-dimensional affine hypersurfaces with properties similar to those of Hermitian curves. We determine a Grobner basis for the ideal of the variety of rational points on certain affine Fermat varieties. This result is applied to determine parameters of codes defined from Fermat surfaces.

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Homflypt Skein Modules., Jianyuan Zhong Jan 2000

Homflypt Skein Modules., Jianyuan Zhong

LSU Historical Dissertations and Theses

Let k be a subring of the field of rational functions in x, v, s which contains x+/-1, v+/-1, s+/-1. If M is an oriented 3-manifold, let S(M) denote the Homflypt skein module of M over k. This is the free k-module generated by isotopy classes of framed oriented links in M quotiented by the Homflypt skein relations: (1) x --1L+ -- xL -- = (s -- s--1 )L0; (2) L with a positive twist = (xv--1)L; (3) L ⊔ O = u-u-1 s-s-1L where O is the unknot. We give two bases for the relative Homflypt skein module of …

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On Some Optimal Control Problems For The Centroaffine Geometry On The Plane., Angel L. Cruz Delgado Jan 2000

On Some Optimal Control Problems For The Centroaffine Geometry On The Plane., Angel L. Cruz Delgado

LSU Historical Dissertations and Theses

A certain parametrization of substantial planar curves yields a centroaffine arclength s and a centroaffine curvature ks that remain invariant under GL(2, R ) motions. In Chapter 4 we search for those substantial curves with predetermined position and velocity at the initial and terminal points, which minimize the total square curvature 0T k2s 2ds as k varies over all square summable functions on each interval [0, T]. These curves are called centroaffine elastic curves. Thinking of the curvature k as a control, we pose our problem as an optimal control problem over the Lie group GL(2, R ) with fixed …

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A Study Of The Effects Of Two Instructional Programs In Reading On Student Reading Self -Efficacy, Personal Perceptions Of The Learning Environment And Reading Levels., Cathy Elaine Smith Daniel Jan 2000

A Study Of The Effects Of Two Instructional Programs In Reading On Student Reading Self -Efficacy, Personal Perceptions Of The Learning Environment And Reading Levels., Cathy Elaine Smith Daniel

LSU Historical Dissertations and Theses

The purpose of this study was to examine differences in students' reading self-efficacy, students' personal perceptions of the learning environment, and change in reading level across instructional programs. In addition, the study explores the relationship between students' personal perceptions of the learning environment as measured by the My Class Inventory-Short Personal Form (MCI-SPF) and student reading self-efficacy as measured by the Reader Self-Perception Scale (RSPS). Analyses showed that: (1) Students in the Success for All (SFA) reading program exhibited higher levels of general reading self-efficacy than did students in the language-based comparison group, (2) Students in the SFA instructional program …

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Structuring Work And Family Lives: Flexible Employment Patterns Among United States Families., Melissa Oliver Stainback Jan 2000

Structuring Work And Family Lives: Flexible Employment Patterns Among United States Families., Melissa Oliver Stainback

LSU Historical Dissertations and Theses

This dissertation focuses on how working families use flexible employment to manage multiple demands associated with combining work and family responsibilities. I argue that flexible employment outcomes are family adaptive strategies and decisions about these strategies are embedded in the household and occur in a context in which husbands and wives make joint decisions about their career trajectories, family obligations and community commitments. Therefore, I expect household models, rather than individual models, to provide a richer understanding of decisions about family and employment outcomes. These models explore more fully how couples may diversify employment participation. Furthermore, household level variables provide …

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Evaporative Mass Transfer Of Hydrophobic Organic Compounds From Exposed Contaminated Sediment And Dredged Materials., Raghunathan Ravikrishna Jan 2000

Evaporative Mass Transfer Of Hydrophobic Organic Compounds From Exposed Contaminated Sediment And Dredged Materials., Raghunathan Ravikrishna

LSU Historical Dissertations and Theses

Dredged sediment materials stored in confined disposal facilities (CDF) contain several hydrophobic organic compounds (HOC) such as polynuclear aromatic hydrocarbons (PAH), some of which are suspected carcinogens. The primary objective of this study was to evaluate the volatilization of HOCs from contaminated, exposed sediment dredged materials and contribute to the risk assessment framework being developed by the U.S. Army Corps of Engineers. Laboratory experiments were performed to measure HOC tracer emissions to air from contaminated sediments (laboratory inoculated and field aged) placed in a specially designed flux chamber. Flux was influenced by a number of factors such as relative humidity …

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An Examination Of The Baby Boom Generation's Financial Preparations For Retirement., Jeanette Adcock Tucker Jan 2000

An Examination Of The Baby Boom Generation's Financial Preparations For Retirement., Jeanette Adcock Tucker

LSU Historical Dissertations and Theses

There has been much concern that the financial status of the 76 million American baby boomers will be inadequate when they reach retirement. The overall purpose of the current study was to examine the baby boom generation's financial preparations for retirement. The family resource management conceptual framework of Deacon and Firebaugh (1988) provided the theoretical base for the study. Data were obtained from 398 baby boomers who responded to the 1999 Retirement Confidence Survey. Depending on the nature of the dependent variable, multiple linear regression or logistic analysis tests were used to determine relationships between the input, throughput, and output …

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Input And Environmental Characteristics In Student Success: First -Term Gpa And Predicting Retention At An Historically Black University., Marcus S. Babaoye Jan 2000

Input And Environmental Characteristics In Student Success: First -Term Gpa And Predicting Retention At An Historically Black University., Marcus S. Babaoye

LSU Historical Dissertations and Theses

This study is aimed at determining the input and environmental factors which contribute to the academic success or failure of students at an historically black institution. Three files were merged with first-time and transfer freshmen characteristics to serve as a basis for the quantitative analyses. On the qualitative front, a case study of college life at Southern University, Baton Rouge was performed. Data were collected from interviews with students, recent graduates, and University personnel. Additionally, the case study involve analyses of institutional records between 1993--1997. The quantitative data analyses revealed that ACT scores, gender, enrollment status, age, and housing arrangement …

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The Effect Of Antecedent And Consequent Strategies On Increasing Student Homework Compliance And Academic Achievement., Donna Marie Gilbertson Jan 2000

The Effect Of Antecedent And Consequent Strategies On Increasing Student Homework Compliance And Academic Achievement., Donna Marie Gilbertson

LSU Historical Dissertations and Theses

The primary purpose of this investigation was to evaluate the effects of homework and alternatives to homework on student math completion, accuracy and fluency for low socioeconomic students. To examine possible causes of homework problems as well as the effect of different treatments on math fluency, this study used an idiographic protocol to systematically examine the effects of antecedent and consequential strategies on different types of homework performance problems through several phases. First, a brief experimental analysis was conducted for each student to identify whether poor homework performance was due to a swill deficit or a performance deficit. Next, an …

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An Intelligent Failure Analysis System., Claude Ray Mount Jan 2000

An Intelligent Failure Analysis System., Claude Ray Mount

LSU Historical Dissertations and Theses

The investigation of commercial/industrial failures is a vital, but complex task. This paper presents an Intelligent Failure Analysis System (aIFAS). It is a system designed by a failure analyst with the goal of making failure investigation easier. The knowledge base for aIFAS comes from commercial laboratory reports. The methodologies employed represents the experience gained from over five years of development. One goal of aIFAS is to provide a case-based expert system tool to help find answers. Functionality ranges from matching a new case to stored example cases to extracting relational data from the aIFAS knowledge base. This study focuses on …

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Cultural Adjustment Of Foreign Students In An Institution Of Higher Education., Bridget Oscar Udoh Jan 2000

Cultural Adjustment Of Foreign Students In An Institution Of Higher Education., Bridget Oscar Udoh

LSU Historical Dissertations and Theses

Foreign students frequently encounter problems in adjusting to their new social environment when studying at institutions of higher education. The purpose of this study was to describe the level of social difficulty experienced by foreign students from different regions of the world while studying in the United States. The target population for this study consisted of 748 undergraduate foreign students enrolled at Louisiana. State University (LSU) in the spring of 2000. The accessible population was all students enrolled in English as a Second Language (ESL). The sample consisted of the 178 undergraduate students enrolled in English 1004 and 1005 (ESL) …

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Economic Implications Of Forest Products Sector Industry Development In Northwest Louisiana, David W. Hughes Jan 2000

Economic Implications Of Forest Products Sector Industry Development In Northwest Louisiana, David W. Hughes

LSU Agricultural Experiment Station Reports

No abstract provided.

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The Debiasing Of Judgmental Errors Associated With Anxiety., Bret Gavin Bentz Jan 2000

The Debiasing Of Judgmental Errors Associated With Anxiety., Bret Gavin Bentz

LSU Historical Dissertations and Theses

It was the goal of the current study to investigate one debiasing technique and its ability to reduce judgmental errors. In addition, a rival hypothesis of demand characteristics was examined as a possible explanation of any findings of the reduction of judgmental errors. Participants were randomly assigned to either a control group or a debiasing group and asked to rate the likelihood of several hypothetical events in a 2 x 2 x 2 x 2 (Gender x Anxiety Group x Treatment Group x Repeated Measure) repeated measures experimental design. Level of anxiety responsiveness was measured to arrange subjects into a …

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"Awakenings" On Relational Ways Of Knowing: An Ecological Perspective On Curriculum., Elaine Kent Riley Jan 2000

"Awakenings" On Relational Ways Of Knowing: An Ecological Perspective On Curriculum., Elaine Kent Riley

LSU Historical Dissertations and Theses

The human species and all nonhuman forms on the planet, have co-evolved over a 14 billion-year process, yet many people operate as if planetary life existed to support and sustain human well-being alone. Separation, dualism, and power-over ways of knowing fuel a human-centered attitude which exalts our own species above the rest of the natural world. How humans will live with the earth in the next millennium (Hogan, 1996) is one of the most fundamental questions arising at the onset of the year 2000. The planet cannot sustain continued degradation of ecological systems stemming from depletion of natural resources and …

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Magnetic Measurements Of Rare Earth Hexaborides., Alem Abraha Teklu Jan 2000

Magnetic Measurements Of Rare Earth Hexaborides., Alem Abraha Teklu

LSU Historical Dissertations and Theses

The de Haas van Alphen (dHvA) effect is used, using the field modulation method, to study the orientation dependence of the extremal cross-sectional areas of the Fermi surface (FS) and effective masses of CexLa 1--xB6 alloys for x between 0 and 0.05. Previous measurements on these samples, using the pulsed field method, up to x = 1 showed that the FS was spin polarized at very low Ce concentration, at x = 0.05, indicating a spin polarity-dependent scattering mechanism. Moreover, the effective mass was enhanced by the increase of Ce concentration. This was the motivation for the present work which …

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Karel Husa's Concerto For Alto Saxophone And Concert Band: A Performer's Analysis., Kevin Robert Burns Jan 2000

Karel Husa's Concerto For Alto Saxophone And Concert Band: A Performer's Analysis., Kevin Robert Burns

LSU Historical Dissertations and Theses

Concerto for Alto Saxophone and Concert Band by Karel Husa is regarded as one of the great wind concertos of the 20th century. It is an atonal composition with an unusual and complex rhythmic language. In and of itself analysis is a creative and intellectual endeavor. It also can give the performer a deeper understanding of the piece so that he or she can give a better performance. This paper is the first analysis of Husa's concerto to use Allen Forte's set theory method of melodic and harmonic analysis. The rhythm analysis is unique in that it recognizes the philosophical …

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The Impact Of Human Resource Expenditures And The Minimum Foundation Program's Level 3 Subsidy On Academic Productivity In Louisiana., John Paul Beaudoin Jan 2000

The Impact Of Human Resource Expenditures And The Minimum Foundation Program's Level 3 Subsidy On Academic Productivity In Louisiana., John Paul Beaudoin

LSU Historical Dissertations and Theses

This study investigated the impact of instructional salaries with and without a state-sponsored, supply-side subsidy on the academic productivity of schools in Louisiana. The subsidy under investigation was the Level 3 allocation for instructional salaries outlined in Louisiana's Minimum Foundation Program (MFP) that provides fiscal support for educational costs to local school boards. An educational production function model within the general systems framework outlined by Rossmiller and Geske (1977) was used in this study. All selected variables were aggregated to the school-level, which served as the unit of analysis for the study. The study's final sample (n = 296) approximated …

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Effects Of Microstructure And Crystallographic Texture On Yield Behavior Of Aluminum-Copper-Lithium 2195 Plate., Karen Elizabeth Crosby Jan 2000

Effects Of Microstructure And Crystallographic Texture On Yield Behavior Of Aluminum-Copper-Lithium 2195 Plate., Karen Elizabeth Crosby

LSU Historical Dissertations and Theses

The focus of this research is to study the effects of deformation and aging on the yield behavior of precipitation-hardened Al-Cu-Li alloys, specifically AI-Cu-Li 2195 plate. Al-Cu-Li 2195 is a relatively new and exceptionally strong, yet lightweight aluminum alloy. Experimental methods applicable to mechanical/structural engineering and materials science problems provide the means for understanding the interrelation of deformation, microstructure, and crystal orientation (texture) as they affect the mechanical properties of crystalline materials. Yield strength is a vital mechanical property in that it defines the boundary of stress that may be applied to a part before a permanent, in some cases, …

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A Cross-Sectional Study Of Prevalence And Risk Factors For Major Goat Diseases In Eastern And Western Uganda: Results And Exploration Of Biases., Edmond Kato Kabagambe Jan 2000

A Cross-Sectional Study Of Prevalence And Risk Factors For Major Goat Diseases In Eastern And Western Uganda: Results And Exploration Of Biases., Edmond Kato Kabagambe

LSU Historical Dissertations and Theses

In 1998 a cross-sectional study on goat health and management was conducted in eastern and western Uganda. This study involved 1518 goats which were distributed in 145 herds in 5 districts, namely Kumi, Masaka, Mbarara, Soroti and Ssembabule. Cluster sampling was used to select farms across the two regions. A questionnaire on goat health, management and constraints to production was administered to 145 goat owners. Blood and nasal swabs were collected from a random sample of goats. For each goat a physical examination was performed to detect presence of clinical conditions. Serological assays for contagious caprine pleuropneumonia (CCPP), peste des …

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Atomic And Electronic Properties Of Neutral And Cationic Metallic Clusters., Andrew Marc Kolchin Jan 2000

Atomic And Electronic Properties Of Neutral And Cationic Metallic Clusters., Andrew Marc Kolchin

LSU Historical Dissertations and Theses

We find optimal atomic and electronic structures for neutral and singly, positively charged clusters of beryllium and beryllium-lithium (of the form BeLik) using density functional theory in the local spin density approximation. Ions are moved with a steepest descent method, and the electronic wave functions optimized using a fictitious dynamics with simulated annealing, as conceived by Car and Parrinello. Shell-like orbitals, filling angular momentum states in the order: 1s 2p 2s 1d, are obtained for the beryllium clusters. The same ordering is found for the BeLik clusters which indicates a departure from the ordering found in pure alkali clusters by …

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State-Resolved Molecular Photoionization Dynamics Of Polyatomic Systems: Effects Of Non-Linear Changes In Molecular Geometry., James Scott Miller Jan 2000

State-Resolved Molecular Photoionization Dynamics Of Polyatomic Systems: Effects Of Non-Linear Changes In Molecular Geometry., James Scott Miller

LSU Historical Dissertations and Theses

An important topic in the absorption of vacuum ultraviolet photons by molecules is the correlation between electronic and nuclear degrees of freedom during photoionization. However, no previous investigations have probed the correlation between bending excitation and photoejection dynamics over a wide spectral range. We present the first such studies by reporting the influence of bending excitation following CO2 3sigmau --1 and N2O 7sigma--1 photoionization over the photon energy range (15 eV < hvexc < 200 eV). Using dispersed fluorescence spectroscopy in conjunction with synchrotron radiation, we determine the vibrational branching ratio v+ = 0,1,0 0,0,0 for the CO2+ (B 2Sigmau+) and N2O+ (A 2Sigma+) electronic states. The relative rate of production of the upsilon2 = 1 upper vibrational state varies over a broad ionization energy range, and in ways that are largely unanticipated. These branching ratios exhibit a strong thermal dependence, and we are able to separate out effects due to hot-band excitation from those that are due to vibronic coupling. The data indicate that the continuum electron is responsible for the observed energy dependence in CO2 3sigma u--1 photoionization. This is a previously unobserved result. Additional studies examine the influence of simultaneous excitation in the bending and symmetric stretching modes in N2O+ [A 2Sigma+, v + = (1,1,0)] to determine the effect of changing the energy separation of vibronically coupled potential surfaces. Finally, the CF4 + [D 2A1, v+ = (1,0,0,0)/(0,0,0,0)] branching ratio is studied, which provides the first experimental observation of a predicted low-energy shape resonance in this photoionization pathway.

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Cancer Mortality And *Environment In Louisiana: A Geographical Inquiry., Mihye Bark Jan 2000

Cancer Mortality And *Environment In Louisiana: A Geographical Inquiry., Mihye Bark

LSU Historical Dissertations and Theses

Cancer is one of the most serious health problems in the U.S. Louisiana mortality rates for all sites of cancer have exceeded national rates since 1950. Even though concern about the issues of environmental cancer is growing, conclusive results have not been reported. Previous studies differed in data source, data quality, time of observation, and statistical procedure, making comparison of results problematic. The spatial patterns of the most common cancer sites in Louisiana (from 1953 to 1993) and their relationships with environmental factors were investigated, using GIS software and statistical software. To provide a clear understanding of how the spatial …

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The Function Of Speech (Verbal Mediation) On Corresponding Academic And Social Behavior., Kimberly Jo Callicott Jan 2000

The Function Of Speech (Verbal Mediation) On Corresponding Academic And Social Behavior., Kimberly Jo Callicott

LSU Historical Dissertations and Theses

The role of language in self-control has been of interest to researchers across continents and time. This study attempted to isolate the functional role of language in relationship to subsequent academic and task engaged behaviors with four students aged 10--14. The students were diagnosed with Emotional or Behavioral Disorders had normal intelligence and were receiving their education at an alternative placement facility. The study used a single subject design and exposed the subjects to conditions of self-declaratory speech (SDS), SDS and reinforcement for correspondence, a return to baseline, SDS and reinforcement for correspondence, and SDS with delayed reinforcement. Results of …

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Interaction Between Cognitive Styles And Assessment Approaches., Mehtap Cakan Jan 2000

Interaction Between Cognitive Styles And Assessment Approaches., Mehtap Cakan

LSU Historical Dissertations and Theses

The present study investigated the interaction of cognitive style and assessment format (multiple-choice (MC) and performance-based assessments (PBA)) in second language proficiency. The participants consisted of 258 eighth-grade students. The second language achievement of the students was assessed by the Eighth Grade Proficiency/Credit Exam: French I. The cognitive style of the students was assessed by the Group Embedded Figures Test. The study also examined study habits and attitudes of field-dependent (FD) and field-independent (FI) students toward the two assessment formats. The study utilized a sequential mixed-model design, consisting of both quantitative and qualitative methods. Phase I consisted of a quantitative …

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Studies In Organized Media: Part I. Characterization And Use Of Polymeric Chiral Surfactants As Pseudo-Stationary Phases For Separation In Capillary Electrophoresis. Part Ii. Use Of Cyclodextrins In Capillary Electrophoresis And In The Formation Of Linear Aggregates., Houphouet Hyacinthe Yarabe Jan 2000

Studies In Organized Media: Part I. Characterization And Use Of Polymeric Chiral Surfactants As Pseudo-Stationary Phases For Separation In Capillary Electrophoresis. Part Ii. Use Of Cyclodextrins In Capillary Electrophoresis And In The Formation Of Linear Aggregates., Houphouet Hyacinthe Yarabe

LSU Historical Dissertations and Theses

This research involves the synthesis and characterization of charged chiral polymeric surfactants for their use as pseudostationary phases in electrokinetic chromatography (EKC). Poly sodium N-undecanoyl L-valinate (poly L-SUV), poly sodium N-undecanoyl L-threoninate (poly L-SUT), and poly sodium N-undecanoyl L-isoleucinate (poly L-SUIL) were synthesized in this study. The partial specific volumes of these polymers, determined using a densitometer, were 0.81, 0.77, and 0.83 mL/g, respectively. Molecular weights of 9,984, 11,252 and 10,563 were obtained for poly L-SUV, poly L-SUT and poly L-SUIL, respectively by using sedimentation equilibrium. In addition, sedimentation coefficients of 0.67 and 1.03 S were found for poly L-SUV …

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A Narrative Study Of Selected Introductory College Biology Students' Struggles To Gain An Understanding Of Scale And Measurement., Juliana Guillory Hinton Jan 2000

A Narrative Study Of Selected Introductory College Biology Students' Struggles To Gain An Understanding Of Scale And Measurement., Juliana Guillory Hinton

LSU Historical Dissertations and Theses

Case studies, developed with criteria from Yin's Case Study Research: Design and Methods (1994), probed single mental constructs of four introductory college biology students who were recent high school graduates. Data sources included autobiographical essays, interviews, coconstructed concept maps (Wandersee & Abrams, 1993), a videotape questionnaire, and graphics. A multisensory microscopy experiment provided the setting for the construction of shared meanings by the participants. Concept maps were used then to explore the existing cognitive framework of the participants. This research affirmed the value of supporting graphic organizers for understanding science (Good & Berger, 1998; Hyerle, 1996; Trowbridge & Wandersee, 1998). …

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Female High School Biology Students' Biofilm -Focused Learning: The Contributions Of Three Instructional Strategies To Patterns In Understanding And Motivation., Jo Dale Hill Ales Jan 2000

Female High School Biology Students' Biofilm -Focused Learning: The Contributions Of Three Instructional Strategies To Patterns In Understanding And Motivation., Jo Dale Hill Ales

LSU Historical Dissertations and Theses

This exploratory study examined three instructional strategies used with female high school biology students. The relative contributions of the strategies to student understanding of microbiology and motivation in science were analyzed. The science education community targeted underachievement in science by implementing changes in content and practices (NRC, 1996). Research suggested that teachers facilitate learnirig environments based on human constructivism (Mintzes, Wandersee, & Novak, 1997) that is rooted in meaningful learning theory (Ausubel, Novak & Hanesian, 1978). Teachers were advised to use both visual and verbal instructional strategies (Paivio, 1983) and encourage students to construct understandings by connecting new experiences to …

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