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Modeling Event-Based Coupled Hydrologic And Mass Transport In Small Urban Watersheds, Yuhong Sheng Jan 2004

Modeling Event-Based Coupled Hydrologic And Mass Transport In Small Urban Watersheds, Yuhong Sheng

LSU Doctoral Dissertations

To investigate the event-based coupled hydrologic and mass transport processes of particulate matter and their eventual fate in unit operations/processes, several methodologies were developed. Discrete rainfall-runoff events data were collected at two similar urban watersheds for model calibration and verification. A mathematically and physically-based criterion was proposed to differentiate rainfall-runoff events between either mass-limited or flow-limited. Statistical techniques of Logistic Regression and Discriminant Analysis were utilized to derive classification rules for event categories based on hydrologic data only. With watersheds assumed as either lumped systems or distributed systems, physically-based semi-empirical models were developed to simulate particulate mass delivery process during …

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Variation In The Performance Of Speech Acts In Peninsular Spanish: Apologies And Requests, Laura Elizabeth Stapleton Jan 2004

Variation In The Performance Of Speech Acts In Peninsular Spanish: Apologies And Requests, Laura Elizabeth Stapleton

LSU Doctoral Dissertations

This study examines variations in the performance of speech acts and additional discourse features in situational speech patterns of Peninsular Spanish. Based on studies by Blum-Kulka, et al. (1989), nine situations were created, varying from less severe to more severe, to elicit natural responses for apologies and requests. Forty participants from Castile and Andalusia were interviewed, and the data were coded to examine the differences in speech act realizations and the use of specific discourse features. The participants’ responses were classified by regional, gender, and age differences for the data set. Sociolinguistic differences in the use of additional discourse features …

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A Performer's Guide To Virgil Thomson's Five Songs From William Blake, Andrew David Whitfield Jan 2004

A Performer's Guide To Virgil Thomson's Five Songs From William Blake, Andrew David Whitfield

LSU Doctoral Dissertations

Though perhaps his most well-known vocal works might be his operas, Four Saints in Three Acts and The Mother of Us All, American composer Virgil Thomson (1896-1989) did write nearly seventy songs for voice and piano, including several important song cycles. One of these cycles, the Five Songs from William Blake, represents an impressive composition for the baritone voice. Unfortunately, much of the previous scholarship about Thomson did not award these Blake songs adequate attention, nor was it able to draw upon many of the primary sources about Thomson’s life and work that are now available. The purpose of this …

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Tuning Polymeric Chiral Surfactants For Enhanced Enantiomeric Recognition In Micellar Electrokinetic Chromatography, Jepkoech Tarus Jan 2004

Tuning Polymeric Chiral Surfactants For Enhanced Enantiomeric Recognition In Micellar Electrokinetic Chromatography, Jepkoech Tarus

LSU Doctoral Dissertations

The research presented in this dissertation involves the synthesis, modification, characterization, and the application of polymeric surfactants in micellar electrokinetic chromatography (MEKC). Sodium undecenoyl-L-Leucinate (L-SUL) was synthesized and modified by use of alkali metal counterions, alcohols, and Triton X-102. Characterization of the modified poly-L-SUL was performed in order to elucidate the structural changes on the surfactants by use of four techniques. While surface tensiometry was used for the determination of the critical micelle concentration (cmc), fluorescence measurements were used for the determination of the polarity of the modified polymeric surfactants. The information about the size of the polymeric surfactants was …

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Juvenile Recidivism: An Analysis Of Race And Other Socio-Demographic Predictors Within Three Intervention Modalities In The State Of Louisiana, Jospeter M. Mbuba Jan 2004

Juvenile Recidivism: An Analysis Of Race And Other Socio-Demographic Predictors Within Three Intervention Modalities In The State Of Louisiana, Jospeter M. Mbuba

LSU Doctoral Dissertations

Owing to the increasingly growing problem of juvenile crime and the recognition that adult criminals begin their criminal careers in their juvenile years, the need to contain juvenile offending has never before been so glaring. Delinquency of young offenders can be predicted and prevented. But the methods most often used to predict juvenile recidivism typically derive from stereotypical conceptions, which often yield very low accuracy levels. This study is an attempt to make up for this shortfall. It tracks one year recidivism of 2,810 juvenile offenders released from state custody of Louisiana between July 1999 and June 2000. Of these …

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Numerical Methods For The Unsteady Incompressible Navier-Stokes Equations And Their Application To The Direct Numerical Simulation Of Turbulent Flows, Frank Herbert Muldoon Jan 2004

Numerical Methods For The Unsteady Incompressible Navier-Stokes Equations And Their Application To The Direct Numerical Simulation Of Turbulent Flows, Frank Herbert Muldoon

LSU Doctoral Dissertations

Two new methods for the efficient parallel computation of the unsteady incompressible Navier-Stokes equations are presented. Such efficient methods are desired for large scale parallel computations of unsteady turbulent flows such as Direct Numerical Simulations (DNS). The performance of the new methods has a distinct advantage over the artificial compressibility method, in that the methods exhibit robust convergence for a variety of flow problems without extensive need for tuning computational parameters. These methods and others have been implemented in a computer program designed for massively parallel computer architectures, written by the author and used to obtain all results in this …

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Spectroscopic And Synthetic Studies Relating To A Dirhodium Hydroformylation Catalyst, Petia Gueorguieva Gueorguieva Jan 2004

Spectroscopic And Synthetic Studies Relating To A Dirhodium Hydroformylation Catalyst, Petia Gueorguieva Gueorguieva

LSU Doctoral Dissertations

The main goal of this dissertation research was to further study and characterize our bimetallic hydroformylation catalyst, rac-[Rh2(nbd)2(et,ph-P4)](BF4)2, and to fully identify the catalytically inactive mono- and dirhodium complexes formed upon fragmentation of the catalyst under hydroformylation conditions. Various in situ NMR methods such as 1D 1H and 31P, and 2D COSY, HMBC, and HMQC were employed and indicated the formation of the key catalyst, [rac-Rh2H2(μ-CO)2(CO)4(et,ph-P4)]2+, 4, and a number of other Rh-phosphine species on and off the catalytic cycle. …

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Differentiating Beliefs Of Insured And Uninsured, Insurance-Eligible State Employees: A New Application Of The Health Belief Model, Jill Elizabeth Murray Jan 2004

Differentiating Beliefs Of Insured And Uninsured, Insurance-Eligible State Employees: A New Application Of The Health Belief Model, Jill Elizabeth Murray

LSU Doctoral Dissertations

The increasing number of uninsured Americans is a crucial policy issue for the United States; however, there is a paucity of empirical social science research on the uninsured with which to guide the development of policy. Previous research indicates that when insurance is voluntary, whether offered through a state-initiated reform to reduce uninsurance or offered through an employer as a benefit, some people choose to remain uninsured. The literature calls for research to increase understanding of the factors that affect whether people offered insurance accept or decline that insurance. Research on the uninsured is lacking a theoretical framework to help …

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"Walking The Queen's Highway": Ideology And Cultural Landscape In Nothern Ireland, Deborah J. Miller Jan 2004

"Walking The Queen's Highway": Ideology And Cultural Landscape In Nothern Ireland, Deborah J. Miller

LSU Doctoral Dissertations

The use of public art and ritual in Northern Ireland leads to the creation of cultural landscapes heavy with symbolism – ideological landscapes – that maintain social divisions and incite conflict. Mural and curbstone painting, flag bearing, the construction of memorials, and parading are activities that inscribe messages in the landscape. This study documents the types of symbolism prevalent in Northern Irish landscapes, the meanings attributed to them, and the reactions and subsequent cultural landscape re-creations that result. Loyalist and nationalist marches that incite riots and civil disorder have disrupted and delayed peace efforts in Northern Ireland for decades. Both …

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Molecular Systematics Of The Cashew Family (Anacardiaceae), Susan Katherine Pell Jan 2004

Molecular Systematics Of The Cashew Family (Anacardiaceae), Susan Katherine Pell

LSU Doctoral Dissertations

Anacardiaceae Lindl., the cashew family, is an economically important, primarily pantropically distributed family of 82 genera and over 700 species. This family is well known for its cultivated edible fruits and seeds (mangos, pistachios, and cashews), dermatitis causing taxa (e.g., Comocladia, Metopium, Semecarpus, Toxicodendron, etc.), and lacquer plants (Toxicodendron and Gluta spp.). The taxonomy of Anacardiaceae has not been thoroughly investigated since Engler established the currently used five tribal classification system over 100 years ago. This study evaluated evolutionary relationships of the family using nrDNA and cpDNA sequences. The first part of the study investigated the evolutionary position of Anacardiaceae …

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Entry-Level Job Skills Needed By Wildlife Management Professionals, Billy Warren Delany, Jr. Jan 2004

Entry-Level Job Skills Needed By Wildlife Management Professionals, Billy Warren Delany, Jr.

LSU Doctoral Dissertations

The research purpose was to identify the job skills needed by entry-level wildlife managers, which was accomplished by utilizing a Delphi panel of wildlife management experts from the academic, private and public employment sectors. The Delphi panel was selected from a committee nominated, pool of 81 innovative wildlife management experts. The panel for Rounds One, Two, and Three of this Delphi survey consisted of 31, 32, and 31 members, respectively. The Delphi process involved three survey rounds. Round One consisted of collecting and developing entry-level job skill items from the panel, which resulted in 382 items. Round Two developed initial …

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Imidazolinone-Tolerant Rice: Weed Control, Crop Response, And Environmental Impact, Ronald Joseph Levy, Jr. Jan 2004

Imidazolinone-Tolerant Rice: Weed Control, Crop Response, And Environmental Impact, Ronald Joseph Levy, Jr.

LSU Doctoral Dissertations

Field and greenhouse research was conducted from 1999 to 2003 to evaluate weed control in imidazolinone-tolerant (IT) rice (Oryza sativa L.) under various tillage and planting systems, tolerance of IT rice cultivars to imazethapyr rate and application timing, and the impact of IT technology and tillage systems on solids runoff in rice drainage water. In both conventional and reduced tillage systems imazethapyr applied preemergence and postemergence at 70 g ai/ha controlled red rice (Oryza sativa L.), barnyardgrass [Echinochloa crus-galli (L.) Beauv.], Amazon sprangletop [Leptochloa panicoides (Presl) Hitchc.], and rice flatsedge (Cyperus iria L.) 87 to 99%. Indian jointvetch (Aeschynomene indica …

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Development Of Dynamic Travel Demand Models For Hurricane Evacuation, Haoqiang Fu Jan 2004

Development Of Dynamic Travel Demand Models For Hurricane Evacuation, Haoqiang Fu

LSU Doctoral Dissertations

Little attention has been given to estimating dynamic travel demand in transportation planning in the past. However, when factors influencing travel are changing significantly over time – such as with an approaching hurricane - dynamic demand and the resulting variation in traffic flow on the network become important. In this study, dynamic travel demand models for hurricane evacuation were developed with two methodologies: survival analysis and sequential choice model. Using survival analysis, the time before evacuation from a pending hurricane is modeled with those that do not evacuate considered as censored observations. A Cox proportional hazards regression model with time-dependent …

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Orbit Structure On The Silov Boundary Of A Tube Domain And The Plancherel Decomposition Of A Causally Compact Symmetric Space, With Emphasis On The Rank One Case, Troels Roussau Johansen Jan 2004

Orbit Structure On The Silov Boundary Of A Tube Domain And The Plancherel Decomposition Of A Causally Compact Symmetric Space, With Emphasis On The Rank One Case, Troels Roussau Johansen

LSU Doctoral Dissertations

We construct a G-equivariant causal embedding of a compactly causal symmetric space G/H as an open dense subset of the Silov boundary S of the unbounded realization of a certain Hermitian symmetric space G1/K1 of tube type. Then S is an Euclidean space that is open and dense in the flag manifold G1/P', where P' denotes a certain parabolic subgroup of G1. The regular representation of G on L2(G/H) is thus realized on L2(S), and we use abelian harmonic analysis in the study thereof. In particular, …

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Students With A Ged In Four-Year Institutions: The Voices Of Persisters, Luria Shaw Stubblefield Jan 2004

Students With A Ged In Four-Year Institutions: The Voices Of Persisters, Luria Shaw Stubblefield

LSU Doctoral Dissertations

This study examined the persistence of students with a GED in four-year institutions. Qualitative research methods were employed to better understand the experiences of GED recipients relative to their progress towards baccalaureate degrees. The theoretical framework for this study was symbolic interactionism. Data were collected in two phases. After a pilot study, Phase I data collection consisted of two focus group interviews with three participants each from two institutions in Louisiana. For Phase II, 10 GED recipients at each university were engaged in semi-structured, in-depth interviews, photography, photo elicitation interviews, and document analysis of students’records. The data were analyzed using …

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Against Biopoetics: On The Use And Misuse Of The Concept Of Evolution In Contemporary Literary Theory, Bradley Bankston Jan 2004

Against Biopoetics: On The Use And Misuse Of The Concept Of Evolution In Contemporary Literary Theory, Bradley Bankston

LSU Doctoral Dissertations

This dissertation is a critical assessment of "biopoetics:" a new literary theory that attempts to import ideas from evolutionary science to the study of literature. Borrowing from the field of evolutionary psychology, the biopoeticists argue that some literary forms and themes are particularly valuable because they result from our innate and evolved cognitive structure; they also attempt to create a normative aesthetic from the idea that evolution is progressive. In its first half, this study examines the claims of evolutionary psychology and their application by the biopoeticists; in the second half, it examines the idea that evolution is progressive, and …

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Students' Construction Of The Body In Physical Education, Laura Azzarito Jan 2004

Students' Construction Of The Body In Physical Education, Laura Azzarito

LSU Doctoral Dissertations

Recently, physical education researchers have been concerned about the results of national studies reporting young people's low level of participation in physical activity and health problems associated with inactivity. In general girls are less active than boys, and youth from low socioeconomic classes are less active and are more likely be unhealthy than middle or upper class youth. Blacks have the highest risks of health problems and the highest levels of physical inactivity. Among a number of recommendations included in Healthy People 2010, physical education has been identified as a fundamental site for addressing today's challenges. According to physical education …

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Spatial Analyses And Growth Of Trees In Selected Bottomland Hardwood Stands, Luben D. Dimov Jan 2004

Spatial Analyses And Growth Of Trees In Selected Bottomland Hardwood Stands, Luben D. Dimov

LSU Doctoral Dissertations

Sustainable management and conservation of the extensive bottomland hardwood forest resource in the southeastern U.S. requires a good understanding of basic structural and competitive relationships within these forests. To gain an insight into these relationships, plot information from stands in Arkansas, Louisiana, and Mississippi were analyzed. The effects of individual tree attributes, distance-dependant, and distance-independent competition measures on 5-yr radial growth of red oak crop trees were examined. Selected species included cherrybark oak (Quercus pagoda Raf.), water oak (Q. nigra L.), and Nuttall oak (Q. nuttallii Palmer). Spatial continuity of tree variables was explored through geostatistical analysis. Finally, spatial distribution …

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Postpurchase Implications Of Low Price Guarantees And Consequences Of Low Price Guarantee Default, Sujay Dutta Jan 2004

Postpurchase Implications Of Low Price Guarantees And Consequences Of Low Price Guarantee Default, Sujay Dutta

LSU Doctoral Dissertations

Past research on consumer perceptions related to Low Price Guarantees (LPG) have primarily investigated effects of LPG on consumer search intentions, their perception of offer value and their purchase intentions. The present research had two major objectives: (i) to study the probable effect of LPG on consumers' intentions to search after the purchase and the boundary conditions of such effects; (ii) to study probable consequences of default of an LPG, that is, postpurchase discovery of lower prices in the marketplace despite promise to the contrary. It was shown that while LPG is likely to discourage prepurchase search it might encourage …

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Profiles Of Early Childhood Education Administrators: Looking For Patterns Of Leadership, Mary Aileen Sciaraffa Jan 2004

Profiles Of Early Childhood Education Administrators: Looking For Patterns Of Leadership, Mary Aileen Sciaraffa

LSU Doctoral Dissertations

The purpose of this study was to conduct a systematic inquiry into the lives of six early childhood administrators. The researcher investigated stories these early childhood administrators told about their lived experiences and searched for patterns that emerged from the stories suggesting career paths, personal characteristics, and administrative styles. The sample was obtained from a purposive/criterion sampling of the population. Six early childhood administrators were chosen based on their representation as a strong administrator who had experience with working with young children and families. Data was collected through three interview sessions. The minimum time for each interview session was one …

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A New Broad Spectrum Disinfectant Suitable For The Food Industry, Giovanna Aita Dequeiroz Jan 2004

A New Broad Spectrum Disinfectant Suitable For The Food Industry, Giovanna Aita Dequeiroz

LSU Doctoral Dissertations

A unique biocide composition (patent pending) that is formed from a hydrogen peroxide and sodium hypochlorite mixture was investigated. A biocidal "complex" is formed by adding the peroxide to the hypochlorite in an amount so that the weight ratio of the peroxide to the hypochlorite is no less than 1:10. The chemical structure of this biocidal "complex" is uncertain but we postulate that it is a semi-stable complex, whose stability is disrupted by heat, acid, U/V exposure and the presence of organic matter (i.e., microbes) The antimicrobial activity of the biocidal "complex" is most likely a combination effect between oxidation …

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Regret From Consumer Action Versus Inaction: The Effects Of Post-Decision Information, Decisional Responsibility And Perceived Source Expertise, Neel Das Jan 2004

Regret From Consumer Action Versus Inaction: The Effects Of Post-Decision Information, Decisional Responsibility And Perceived Source Expertise, Neel Das

LSU Doctoral Dissertations

This dissertation proposes to examine regret arising from action versus inaction in consumer decision-making contexts. Although there has been extensive research in the area of regret, no extant literature in marketing has been found that has investigated the nature of regret arising from inaction, specifically in stockout conditions. The first study defines the concept of decisional action and inaction as the key sources of the regret emotion. Specifically, regret arising from inaction (and action) is investigated under sub-optimal and optimal conditions. Subsequently, circumstances are identified when inaction-driven levels of regret are likely to be higher than levels of action-driven regret …

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The Organ Works Of Fela Sowande: A Nigerian Organist-Composer, Godwin Simeon Sadoh Jan 2004

The Organ Works Of Fela Sowande: A Nigerian Organist-Composer, Godwin Simeon Sadoh

LSU Doctoral Dissertations

Fela Sowande (1905-1987) has a huge compositional output including orchestral and vocal works. However, his organ music outnumbered the totality of his compositions. His organ pieces represent a truly intercultural music in which distinct tripartite cultural idioms are evident—Nigerian, African American and European. Works of this nature serve as creative source materials for aspiring composers, performers, scholars, music educators, and students in Africa and the world. This composer, folklorist, and music educator was born into a well-known music family in Nigeria. He was active in radio broadcasting, Yoruba folklore and mythology, indigenous music research, Nigerian art music, performance, orchestral conducting, …

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Bagasse Fiber For Production Of Nonwoven Materials, Ovidiu Iulius Chiparus Jan 2004

Bagasse Fiber For Production Of Nonwoven Materials, Ovidiu Iulius Chiparus

LSU Doctoral Dissertations

Raw materials used in nonwoven products vary greatly, covering the entire spectrum from synthetic to natural fibers. The limitation of use for industrial applications of nonwoven products has long been surpassed, today nonwovens being found in diverse applications ranging from intimate apparel to geotextiles. The present work has as its ultimate goal to develop a commercial method for characterizing some of the physical properties of bagasse or other unconventional fibers obtained through a new atmospheric extraction method, and also to create and analyze different nonwoven structures based on bagasse, kenaf and other annual plants. Bagasse fibers were extracted from sugar …

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Assessing The Identity Of Black Indians In Louisiana: A Quantitative And Qualitative Analysis, Francis J. Powell Jan 2004

Assessing The Identity Of Black Indians In Louisiana: A Quantitative And Qualitative Analysis, Francis J. Powell

LSU Doctoral Dissertations

This study shows the existence of Black Indians in Louisiana and investigates whether differences exist between Black Indians who are members of officially recognized tribes and those who do not have any type of recognition. The study examined if a relationship exist between tribal recognition and ethnic identity, subjective well-being, and social support. A cross-sectional survey design was used. Semi-structured interviews were conducted to obtain qualitative data. The sample consisted of 60 participants. 30 were from recognized tribal groups and 30 were from non-recognized tribal communities. The study specifically examined variables related to the perceptions of Black Indians in Louisiana …

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Modulation Of Gabaergic Signaling In Retinal Amacrine Cells, Brian Kevin Hoffpauir Jan 2004

Modulation Of Gabaergic Signaling In Retinal Amacrine Cells, Brian Kevin Hoffpauir

LSU Doctoral Dissertations

The intricate circuitry formed by amacrine cells in the inner plexiform layer (IPL) of the retina suggests that these interneurons play a major role in shaping the visual message. The majority of amacrine cells in the vertebrate retina are GABAergic. Thus, elucidating how GABAergic signaling is modulated in the IPL is critical in order to understand how the visual message is processed in the retina. The results presented here suggest that GABAergic signaling between amacrine cells can be modulated by the activation of metabotropic glutamate receptor 5 (mGluR5) or by the production of the second messenger, nitric oxide (NO). A …

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Louisiana State University Nasalance Protocol Standardization, Kathryn Ruth Kendrick Jan 2004

Louisiana State University Nasalance Protocol Standardization, Kathryn Ruth Kendrick

LSU Master's Theses

It was the purpose of this study to obtain nasalance values using the Nasometer and a resonance evaluation created at the Louisiana State University (LSU) Speech and Hearing Clinic. The Nasometer was used to measure the amount of nasal acoustic energy in the speech of 40 normal young adults during sustained vowel production, consonant vowel reduplications, and connected speech using the Rainbow Passage. Means and standard deviations are presented for the individual speech tasks and according to gender. Nasalance values for the sustained vowels were significantly higher for the high front vowel /i/ than any other vowel, and the lowest …

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Audiating The Lsu Drumline: An Ethnographic Performance, Andrew Michael Causey Jan 2004

Audiating The Lsu Drumline: An Ethnographic Performance, Andrew Michael Causey

LSU Master's Theses

This is an ethnographic study of the drumline of the LSU Marching Band and the mock-fraternity they created called Phi Boota roota (ΦBr). I argue that ΦBr was created as a site to flesh out the various tensions members experience as members of the LSU drumline; they create a rite of passage ritual that functions as a carnivalesque and celebratory inversion of the system they find themselves submerged within. Phi Boota roota marks a created articulation of the transition members make when they become part of the larger ritual of Tigerband; it is a voluntary or liminoid ritual that allows …

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Quality Evaluation Of Cheddar Cheese Containing Gamma-Oryzanol, Miguel Ángel Gutiérrez Jan 2004

Quality Evaluation Of Cheddar Cheese Containing Gamma-Oryzanol, Miguel Ángel Gutiérrez

LSU Master's Theses

Health benefits from consuming rice bran oil (RBO) have been extensively studied in humans. RBO has been shown to decrease cholesterol absorption by inhibiting the oxidation of the LDL-cholesterol. Gamma-Oryzanol is one of the RBO components that possess antioxidative properties; it is a polyphenolic compound resembling tocopherol (vitamin E), which is another component of RBO. There are evidences that oryzanol has potential applications for enhancing shelf-life of foods containing fats processed at a high temperature, decreasing the total cholesterol, LDL-cholesterol and triglyceride levels in plasma lipids, and healing ulcers. In order to take advantage of the health benefits of oryzanol, …

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The Gender Gap In Political Knowledge: A Comparison Of Political Knowledge Levels In The United States, Canada, And Great Britain, Emily Marie Guynan Jan 2004

The Gender Gap In Political Knowledge: A Comparison Of Political Knowledge Levels In The United States, Canada, And Great Britain, Emily Marie Guynan

LSU Master's Theses

Previous research indicates that there is a gender gap in political knowledge. I examine whether the gender gap exists in the United States and what the significant determining variables are aside from gender. I also examine whether the gender gap exists in other countries and whether the variables that are significant in the United States are significant in other countries. I examine political knowledge levels in the United States, Canada, and Great Britain. By utilizing crosstabulations and multiple regression models, I find that a gender gap does exist in the United States as well as in Canada and Great Britain. …

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