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Structure And Minors In Graphs And Matroids., Galen Ellsworth Turner Iii
Structure And Minors In Graphs And Matroids., Galen Ellsworth Turner Iii
LSU Historical Dissertations and Theses
This dissertation establishes a number of theorems related to the structure of graphs and, more generally, matroids. In Chapter 2, we prove that a 3-connected graph G that has a triangle in which every single-edge contraction is 3-connected has a minor that uses the triangle and is isomorphic to K5 or the octahedron. We subsequently extend this result to the more general context of matroids. In Chapter 3, we specifically consider the triangle-rounded property that emerges in the results of Chapter 2. In particular, Asano, Nishizeki, and Seymour showed that whenever a 3-connected matroid M has a four-point-line-minor, and T …
Totally Ordered Monoids., Gretchen Wilke Whipple
Totally Ordered Monoids., Gretchen Wilke Whipple
LSU Historical Dissertations and Theses
In this work, we explore properties of totally ordered commutative monoids---we call them tomonoids. We build on the work in [E]. Our goal is to obtain results that will be useful for studying totally ordered rings with nilpotents. Chapter 1 presents background information. In Chapter 2, we present some criteria for determining when a tomonoid is a quotient of a totally ordered free monoid by a convex congruence. In Chapter 3, we show that every positive tomonoid of rank 2 is a convex Rees quotient of a subtomonoid of a totally ordered abelian group. In Chapter 4, we provide a …
Evaluation And Heritability Of Resistance To Sugarcane Red Rot And The Effects Of Environmental Stress On Disease Severity., Zhi Yin
LSU Historical Dissertations and Theses
Heritability of resistance to red rot, caused by Colletotrichum falcatum, was studied using progeny from 40 crosses among 24 parental clones of sugarcane. Significant differences in susceptibility were detected, although high levels of resistance were rare in the breeding and selection populations of the Louisiana sugarcane cultivar development program. Narrow-sense heritability estimates determined by mid-parent-offspring regression for four different disease traits ranged from 0.19 +/- 0.04 to 0.31 +/- 0.05. Potential genetic gain by selection for resistance, using a 10% selection intensity, ranged from 14 to 37% of the mean. The rot index provided the highest heritability estimate and the …
The Effects Of Team-Member Attributes On Team Performance: A Model Of Individual Contribution To Team Performance., Joe J. Yum
LSU Historical Dissertations and Theses
Although team composition is one of the most frequently studied topics in team research, much remains unknown regarding what attributes to look for when selecting team-members and how these attributes affect team performance. The purpose of this study was to present and to test a theoretical model that depicts how individual attributes affect team-member performance and how team-member performance ultimately affects team performance. The proposed model is based on the integration of research on team and individual performance. From a practical standpoint, understanding the relationships among the variables in the proposed model may be important for the selection of employees …
Cerium Oxide As A Highly Effective And Durable High Temperature Desulfurization Sorbent., Yiding Zeng
Cerium Oxide As A Highly Effective And Durable High Temperature Desulfurization Sorbent., Yiding Zeng
LSU Historical Dissertations and Theses
High temperature desulfurization of highly reducing coal-derived gases using cerium oxide sorbents is the primary object of this dissertation research. Such a process may be used with the Integrated Gasification Combined Cycle (IGCC) if H2S concentration may be controlled under 20 ppmv or with the Molten Carbonate Fuel Cell (MCFC) if H2S concentration is less than 1 ppmv. The primary advantage of cerium oxide over the first generation zinc-based high temperature desulfurization sorbents which have been investigated for decades, is the potential to produce elemental sulfur directly during the regeneration phase of the process. Although CeO2 will react with H2S, …
Effect Of An Individualized Treatment Protocol On Competency Restoration In Pretrial Forensic Inpatients., Lisa Jo Bertman
Effect Of An Individualized Treatment Protocol On Competency Restoration In Pretrial Forensic Inpatients., Lisa Jo Bertman
LSU Historical Dissertations and Theses
Competency to stand trial refers to a defendant's ability to consult with his attorney with a reasonable degree of factual and rational understanding of the proceedings against him. If declared incompetent to stand trial by the courts, judicial proceedings are postponed until a defendant's competency deficits are remediated. However, there is a paucity of data on treatment of individuals who have been declared incompetent to stand trial. This study evaluated the effectiveness of individualized treatment on competency restoration in pretrial patients. This investigation improved upon previous group treatment studies, all but one of which were uncontrolled. Treatment groups were: Deficit-Focused …
The Effects Of Roundhouse Diagram Construction And Use On Meaningful Science Learning In The Middle School Classroom., Robin Eichel Ward
The Effects Of Roundhouse Diagram Construction And Use On Meaningful Science Learning In The Middle School Classroom., Robin Eichel Ward
LSU Historical Dissertations and Theses
This research explored the effects of Roundhouse diagram construction and use on meaningful learning of science concepts in a 6th-grade science classroom. This investigation examined the transformation of students' science concepts as they became more proficient in constructing Roundhouse diagrams, what problems students encountered while constructing Roundhouse diagrams, and how choices of iconic images affected their progress in meaningfully learning science concepts as they constructed a series of Roundhouse diagrams. The process of constructing a Roundhouse diagram involved recognizing the learner's relevant existing concepts, evaluating the central concepts for a science lesson and breaking them down into their component parts, …
A Critical Edition Of The Passion And Advent Chapters Of The Pre-Caxtonian "Gilte Legende"., Rosary Jackman Crain
A Critical Edition Of The Passion And Advent Chapters Of The Pre-Caxtonian "Gilte Legende"., Rosary Jackman Crain
LSU Historical Dissertations and Theses
This dissertation is a critical edition of the Passion and Advent chapters of the Middle English Gilte Legende based an MS Lambeth Palace 72 in collation with other manuscripts. Editions of the Legenda aurea, the original Latin text, and of the Legende doree, an intermediate French text, were also consulted. The introduction begins by reviewing the complete research on the Gilte Legende, describing the manuscripts, their handwritings and orthographies, presenting their affiliations in a stemma, and detailing the editorial process. The transmission of the text is traced from the Legenda aurea (c.1266), the Latin legendary of James Varagine, through the …
The Effect Of Exercise On Immune Function In Equids., Robert William Folsom
The Effect Of Exercise On Immune Function In Equids., Robert William Folsom
LSU Historical Dissertations and Theses
The effect of exercise stress on immune modulation and the mechanisms involved were examined in ponies and horses subjected to a strenuous treadmill-based exercise program. The magnitude of changes in exercise-induced cortisol production, lactate, and immunomodulation increased with increases in exercise intensity and the highest levels of each were seen in animals that attained heart rates greater than 200 bpm. Influenza vaccinated ponies and horses were exercised at heart rates greater than 200 bpm for 5 consecutive days and stress tests were performed on days 1 and 5. Exercised animals exhibited significant increases in plasma lactate, plasma cortisol, LAK cell …
Ideomotor Apraxia And Lesion Location: Analysis Of Error Types, Motor Function, And Task Demands., Brenda Hanna-Pladdy
Ideomotor Apraxia And Lesion Location: Analysis Of Error Types, Motor Function, And Task Demands., Brenda Hanna-Pladdy
LSU Historical Dissertations and Theses
Ideomotor apraxia is a disorder of learned skilled movement which typically has been attributed to damage confined predominantly to the frontal and parietal cortical areas within the hemisphere dominant for speech. However, most studies of the anatomical basis of apraxia have relied on case studies or have only approximate lesion localization, and few studies have examined motor performance in relation to lesion location. This study examined the relationship of apraxia severity to lesion location (in both cortical/subcortical dimensions and anterior/posterior dimensions), aphasia, motor performance, and task demands, and identified the existence of subtypes of apraxia with characteristic performance profiles (error …
Characterization Of The Microsomal Mixed -Function Oxidase System Of Several Species Of Sea Anemones (Phylum: Cnidaria)., Linda Marie Heffernan
Characterization Of The Microsomal Mixed -Function Oxidase System Of Several Species Of Sea Anemones (Phylum: Cnidaria)., Linda Marie Heffernan
LSU Historical Dissertations and Theses
Several studies have demonstrated detrimental effects of anthropogenic compounds on coral reef communities. These compounds are known to be bioaccumulated rapidly, but eliminated slowly by anthozoans (i.e., corals and sea anemones). The cytochrome P450-dependent mixed function oxidase (MFO) system is the primary pathway for initial oxidation of many hydrophobic exogenous compounds; however, its presence had not been well documented in anthozoans. The studies reported herein show that a functional cytochrome P450-dependent MFO is present in the microsomal fraction of the sea anemones Anthopleura xanthogrammica , A. elegantissima, and Bunodosoma cavernata . The evidence is based on the presence of classical …
Land -Cover Change Detection For The Tropics Using Remote Sensing And Geographic Information Systems., Jane M. Read
Land -Cover Change Detection For The Tropics Using Remote Sensing And Geographic Information Systems., Jane M. Read
LSU Historical Dissertations and Theses
Changing land-cover in the tropics is a central issue in global change research. This dissertation used Landsat-TM data to examine processes of land-use and land-cover changes for a lowland tropical site in Sarapiqui, Costa Rica. Performances of selected image-processing methods to detect and identify land-cover changes were evaluated. A land-cover time-series from 1960 to 1996 for the site was generated using maps derived from aerial photographs and Landsat-TM classifications. Changes in land-cover from 1986 to 1996 were evaluated using standard landscape indices, and interpreted in terms of their historical context. Dominant changes in the site during this decade included the …
Integrative Approach To Online Quality Management: Process Control And Packout Verification In An Intelligent Manufacturing Workcell., Turuvekere R. Sethumadhava
Integrative Approach To Online Quality Management: Process Control And Packout Verification In An Intelligent Manufacturing Workcell., Turuvekere R. Sethumadhava
LSU Historical Dissertations and Theses
The current global competition and the economic situation in the United States and the world is forcing industries to produce quality products quickly and at a competitive price. Many industries are aiming towards world class manufacturing objectives like responsive delivery, defect free product and declining cost. Industries in the present environment can survive and produce the quality products to customer expectations only if they implement new technologies. The key element in the success of industries is using the continuous process improvement strategies like reducing process variability and reducing response time to process deviations. Achieving quality in manufacturing processes is an …
Elongational Rheology Of Polyethylene Melts., Bijan Seyfzadeh
Elongational Rheology Of Polyethylene Melts., Bijan Seyfzadeh
LSU Historical Dissertations and Theses
Elongational melt flow behavior is an important and fundamental concept underlying many industrial plastics operations which involve a rapid change of shape as for example fiber spinning and stretching, bottle blow molding, and film blowing and stretching. Under high process loads polymeric materials experience enormous stresses causing the molecular structure to gain considerable orientation. This event has significant effects on the melt flow behavior and can be measured in terms of elongational viscosity and changes in enthalpy and entropy. Different polymeric materials with unique molecular characteristics are expected to respond uniquely to the elongational deformation; hence, molecular parameters such as …
An Engineering Equation Of State: Square-Well Statistical Associating Fluid Theory (Saft)., Hertanto Adidharma
An Engineering Equation Of State: Square-Well Statistical Associating Fluid Theory (Saft)., Hertanto Adidharma
LSU Historical Dissertations and Theses
Molecular thermodynamics is an engineering discipline rooted in molecular physics and physical chemistry and aimed at developing practical models that predict the properties of matter. The goal of this work is to develop a molecular thermodynamic model for predicting fluid densities, phase equilibria, and energy functions, such as enthalpy and heat capacity. Chemical engineers need these properties to develop and design new processes and materials, and to make these processes energy efficient and environmentally benign. The approach is to hypothesize a mathematical approximation that captures interactions among real molecules on the basis of a molecular theory called the statistical associating …
Understanding Congressional Responsiveness., Phillip Jude Ardoin
Understanding Congressional Responsiveness., Phillip Jude Ardoin
LSU Historical Dissertations and Theses
This dissertation addresses a simple question: Why are some members of congress very responsive to the ideological preferences of their constituency while others appear to ignore their constituency? Although numerous scholars have explored this issue, they have consistently: (1) limited their analyses to the influence of member characteristics while ignoring the potentially significant influence of constituent factors and (2) failed to test a single comprehensive model of congressional responsiveness that considers the full range of member and constituent factors hypothesized to influence variation in congressional responsiveness. This dissertation directly addresses these two problems by developing and testing a comprehensive model …
Customers' Perceptions Of The Service They Receive: The Influence Of Employee Extra -Role Job Behaviors., Robert Carlton Baker Iv
Customers' Perceptions Of The Service They Receive: The Influence Of Employee Extra -Role Job Behaviors., Robert Carlton Baker Iv
LSU Historical Dissertations and Theses
Today's organizations face increased global and domestic competition, more downsizing, growing emphasis on team based work, and increased focus on customer service issues. This changing work environment necessitates a more complete examination of contextual factors impacting service delivery, including extra-role employee job behaviors (Bettencourt & Brown, 1997; Borman & Motowidlo, 1997). The current study examines the effects of employees' extra-role job behaviors on customers' perceptions of service. Specifically, the present study investigates two types of employee extra-role job behaviors: (1) organizational citizenship behaviors (OCBs), and (2) organizationally deviant behaviors (ODBs). These specific employee extra-role job behaviors are studied in order …
Convergent And Divergent Validity Of The Learning Transfer Questionnaire., Annette Irving Bookter
Convergent And Divergent Validity Of The Learning Transfer Questionnaire., Annette Irving Bookter
LSU Historical Dissertations and Theses
The Learning Transfer Questionnaire (LTQ) was developed as a comprehensive instrument to identify potential factors in the work environment that influence learning transfer (Holton & Bates, 1996). The purpose of the study was to examine the construct validity of the LTQ by focusing on convergent and divergent validity. Specific objectives included: to identify a set of theoretically-based, psychometrically-valid measures which could be used the examine the convergent and divergent validity; and, utilizing correlation analysis, to examine the associations between the 16 LTQ factors and the identified measures. Scales from seventeen measurement instruments were utilized as comparison measures to correlate with …
Phase Equilibria Of Ethylene Copolymers In Sub- And Supercritical Fluids., Ka Chun Chan
Phase Equilibria Of Ethylene Copolymers In Sub- And Supercritical Fluids., Ka Chun Chan
LSU Historical Dissertations and Theses
Phase equilibria of polyethylene and ethylene-copolymers in sub- and supercritical solutions are investigated in this work. Fluid-liquid and fluid-solid phase transitions data are measured for tetracontane, a prototype of linear polyethylene, in sub- and supercritical propane, poly(ethylene-co -hexene-1) in suband supercritical. propane and ethylene + 1-hexene mixture, and poly(ethylene-co-octene-1) in sub- and supercritical propane and ethylene. The experiments are carried out in a batch optical cell equipped with a transmitted-light probe. The experimental data are correlated and predicted using two equations of state derived from of the Statistical Associating Fluid Theory (SAFT). In the case of tetracontane + propane, increasing …
Systematics Of The Common Garter Snake, Thamnophis Sirtalis., John Jeffrey Boundy
Systematics Of The Common Garter Snake, Thamnophis Sirtalis., John Jeffrey Boundy
LSU Historical Dissertations and Theses
Character variation was examined in the snake Thamnophis sirtalis . Initially, 187 characters were examined on five populations (OTUs). Only 12% of the characters failed to show geographic variation by ANOVA. A reduced data set of 72 characters remained after eliminating those that were invariant and correlated. The reduced data set was analyzed for interpopulation variation between 37 OTUs, of T. sirtalis. Numbers of significantly differentiated characters between OTUs, determined by ANOVA, were used to generate a UPGMA tree. The tree placed Texas and Chihuahuan populations as sister groups to all other OTUs, and grouped OTUs from west of the …
Helium And Heavy Ion Measurements With The Crres Satellite., Edmund Gary Clayton
Helium And Heavy Ion Measurements With The Crres Satellite., Edmund Gary Clayton
LSU Historical Dissertations and Theses
The CRRES satellite was in service from July 1990 to October 1991, during a period of high solar modulation and solar activity. The ONR-604 experiment aboard CRRES measured helium with isotopic resolution in the energy range 38--110 MeV/nucleon, and heavy ions through iron at 200--500 MeV/nucleon. Although solar modulation was high throughout the CRRES mission, the mission included periods of solar quiescence as well as a number of large solar flares and associated solar energetic particle events. Measurements were made of helium and heavy ions during both the quiet times and the flare periods. A study was made to search …
Reawakening Sleeping Beauty: Fairy -Tale Revision And The Mid -Victorian Metaphysical Crisis., Cynthia Lynn Demarcus
Reawakening Sleeping Beauty: Fairy -Tale Revision And The Mid -Victorian Metaphysical Crisis., Cynthia Lynn Demarcus
LSU Historical Dissertations and Theses
Despite growing scholarly recognition of subversive social and political content in Victorian fairy tales, their significance in relation to the oft-cited Victorian "spiritual crisis" remains largely unexplored. This interdisciplinary study addresses that critical gap by examining three literary revisions of Sleeping Beauty from the early 1860s as pointed efforts to enter the intensified religious debate following the publication of Charles Darwin's Origin of the Species. The three revisions---Charles Dickens's novel Great Expectations (1860--61), Christina Rossetti's narrative poem "Goblin Market" (1862) and George MacDonald's fairy-tale "The Light Princess" (1864)---all appropriate the popular Sleeping Beauty narrative to create a vivid and emotionally …
Increasing Accuracy In Children's Verbal Self -Report Of Reinforcers., Gina Michelle Digiovanni
Increasing Accuracy In Children's Verbal Self -Report Of Reinforcers., Gina Michelle Digiovanni
LSU Historical Dissertations and Theses
Several studies have examined the relationship between self-report of behavior and actual behavior (Baer, Williams, Osnes, & Stokes, 1985; Bernstein & Michael, 1990; Risley & Hart, 1968). Results from such studies indicate poor correspondence between verbal self-report and actual behavior. This finding is particularly true for children (Guevremont, Osnes, & Stokes, 1986). However, few studies have examined conditions under which the accuracy of self-report procedures can be increased. The current study evaluated whether the accuracy of children's verbal self-report of reinforcers could be increased by modifying antecedent conditions. Specifically, the current study examined the effects of two antecedent variables (i.e., …
Perceptions Of Louisiana High School Students Toward Selected University Types: Predominately White Institutions And Historically Black Institutions Of Higher Education., Dennis Wayne Dillon
Perceptions Of Louisiana High School Students Toward Selected University Types: Predominately White Institutions And Historically Black Institutions Of Higher Education., Dennis Wayne Dillon
LSU Historical Dissertations and Theses
This study examines the perceptions of 11th grade African American and Caucasian American students attending public Louisiana high schools. The students' perceptions are explored in relation to Historically Black Colleges and Universities (HBCU's) and Predominately White Institutions (PWI's). Based on a review of current literature, four common areas emerged. The areas of consideration were perception of academic quality, peer relationships, socio-cultural fit, and faculty/student relationships. The sample of students included 177 students enrolled in the Louisiana public school system in parishes where there were "pairings" of universities (HBCU and PWI). The four parishes where such pairings occurred were Caddo Parish, …
The Perceptions Of Members Of Boards Of Directors For State Associations Serving Community-Based Development Organizations Regarding *Policy And Governance., Ernie Troy Hughes
The Perceptions Of Members Of Boards Of Directors For State Associations Serving Community-Based Development Organizations Regarding *Policy And Governance., Ernie Troy Hughes
LSU Historical Dissertations and Theses
The primary purpose of this study was to determine the perceptions of members of boards of directors for state associations serving CBDOs regarding policy and governance, procedures and how they are achieving organizational goals and objectives. The target population for the study was defined as members of boards of directors of state associations serving CBDOs. The instrument used in this study was a researcher designed questionnaire. It was comprised of two sections---demographics and perceptions of the roles, responsibilities, and accomplishments of the organization. As the literature review established, boards of directors play an important role in the life of associations …
Political Liberalization In Post -Communist Central Asia: A Comparative Study., Muhammad Islam
Political Liberalization In Post -Communist Central Asia: A Comparative Study., Muhammad Islam
LSU Historical Dissertations and Theses
This dissertation seeks to explain variation in political liberalization among three post-communist Central Asian countries: Kazakhstan, Kyrgyzstan, and Uzbekistan. These countries share several common political outcomes such as the dominance of the executive and a high degree of statism. Yet they also witnessed significant variation in political liberalization within a short period of time after their independence in 1991. The fact that these countries share several common political, socioeconomic, cultural, and historical features makes the rise of this political variance more intriguing than the rise of the above, however, salient, common political outcomes among them within few years of their …
To Thine Own Self (And Thine Associates) Be True: The Strategic Management Of Competing Identities Among Academic Women., Shirley A. Keeton
To Thine Own Self (And Thine Associates) Be True: The Strategic Management Of Competing Identities Among Academic Women., Shirley A. Keeton
LSU Historical Dissertations and Theses
Social positions and social relationships are important in structuring self-concept. The self is often viewed as composed of identities related to the social positions an individual occupies. These identities are generally conceptualized as being organized hierarchically based on the individual's relative commitment to each. I contribute to this work by developing an Identity Management Model in which I propose three strategies (compartmentalization, amalgamation, and reprioritization) individuals use to manage completion among identities. In this model, I identify characteristics of (a) the identities, (b) the social environment and (c) the individual's social network that are likely to influence which strategy is …
Determination Of Consolidation Characteristics In Fine Soils Evaluated By Piezocone Tests., Beyongseock Lim
Determination Of Consolidation Characteristics In Fine Soils Evaluated By Piezocone Tests., Beyongseock Lim
LSU Historical Dissertations and Theses
There has been an increasing trend to use the piezocone penetration test (PCPT) as an in situ tool of choice for determining the consolidation and flow characteristics of cohesive soils. The focus of this research is to study various factors that would affect the determination of consolidation characteristics in fine soils evaluated by piezocone tests. Immediate changes in excess pore pressure and tip resistance after penetration arrest for dissipation were experimentally identified. Undrained shear strength, influence of stress history, and lateral stress coefficient effects on the penetration pore pressure were investigated. By using a two-stage slurry consolidation technique, cohesive soil …
Flexural Creep Analysis Of Recycled Polymeric Structural Elements., Jose Noe Martinez-Guerrero
Flexural Creep Analysis Of Recycled Polymeric Structural Elements., Jose Noe Martinez-Guerrero
LSU Historical Dissertations and Theses
A structural product made of recycled plastics in standard sections similar to dimensional lumber is referred to as plastic lumber. The recycled plastics used in the manufacture of these members include high density polyethylene, polyethylene terephthalate and polystyrene. Plastic lumber is a viscoelastic material possessing mechanical properties that are time and temperature dependent. This structural product is currently used primarily in non-load-bearing and low-end structural applications because of the non availability of engineering data and concerns about its creep behavior. Creep, which is the time dependent deformation under constant stress, is high for plastic lumber and is temperature sensitive. A …
Unrestrained Women And Decadent Old Aristocrats: The Nineteenth-Century Middle Class Struggle For Cultural Hegemony., Ronald Hamilton May
Unrestrained Women And Decadent Old Aristocrats: The Nineteenth-Century Middle Class Struggle For Cultural Hegemony., Ronald Hamilton May
LSU Historical Dissertations and Theses
This dissertation examines three popular novels of the Victorian period: W. G. M. Reynolds's Wagner, the Wehr-wolf (1846-7), Mary Elizabeth Braddon's Lady Audley's Secret (1862), and Bram Stoker's Dracula (1897). Each work was written during distinct decades of the nineteenth century when certain popular novels were under attack for rotting the minds of their readers, promoting vice, and subverting cultural standards. During the 1840s, when Reynolds's wrote Wagner, the Wehr-wolf , novels that were published in cheap penny weeklies created a sensation among mass readers. In the 1860s, when Braddon wrote Lady Audley's Secret, the sensation novel became popular with …