Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2000

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 56341 - 56370 of 58477

Full-Text Articles in Entire DC Network

The Welfare And Distribution Impacts Of International Agricultural Trade Policies: An Analysis Of Turkey's Integration Into The European Union., Cemal Atici Jan 2000

The Welfare And Distribution Impacts Of International Agricultural Trade Policies: An Analysis Of Turkey's Integration Into The European Union., Cemal Atici

LSU Historical Dissertations and Theses

The objective of this dissertation is to examine the agricultural trade policies of Turkey and determine the impact of various relevant policy scenarios on the welfare and distribution of income within the agricultural sector as well as between producers and consumer groups. The main goal of this research is to quantify the impact of trade liberalization resulting from multilateral agricultural trade agreements and the formation of regional trading blocs on Turkish agriculture and, consequently, the income distribution effects in the various producer and consumer groups. The study utilizes a partial equilibrium framework Modele Internationale Simplifie de Simulation (MISS) to analyze …


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 …


Synthesis Of Phosphonate And Thiophosphonate Peptide Analogs As Inhibitors Of Carboxypeptidase A., Hong Fan Jan 2000

Synthesis Of Phosphonate And Thiophosphonate Peptide Analogs As Inhibitors Of Carboxypeptidase A., Hong Fan

LSU Historical Dissertations and Theses

Phosphonate analogs of peptides are important in biochemical research and potentially as medicinal agents because of their ability to strongly inhibit both metallo and aspartyl proteases. Although a number of phosphorus-containing molecules were reported as inhibitors for carboxypeptidase A (CPA, there have been only a few thiophosphonopeptide inhibitors reported. There has been no investigation in which the Ki values of a series of thiophosphonate inhibitors was compared to the analogous phosphonates to probe the role the sulfur atom in inhibition. The goal of this work is to prepare phosphonopeptide inhibitors of CPA and their thio-analogs so that this comparison can …


Immobilization Of Enzymes On Porous Silica For The Micro-Digestion Of Oligonucleotides With Analysis By Ce., Yolanda Yvette Davidson Jan 2000

Immobilization Of Enzymes On Porous Silica For The Micro-Digestion Of Oligonucleotides With Analysis By Ce., Yolanda Yvette Davidson

LSU Historical Dissertations and Theses

The research in this dissertation has focused on the immobilization of enzymes on silica to perform digestions with DNA and RNA with subsequent analysis by capillary electrophoresis. Solid-phase DNA restriction digest reactors were developed consisting of silica particles modified with a covalently tethered restriction enzyme. This solid-phase restriction reactor enables digestion and separation of minute quantities of DNA with minimal reagent consumption. The restriction enzymes, HaeIII, PstI and HindIII, were successfully immobilized via glutaraldehyde linkages to porous silica micro-particles. Studies were done to examine the impact of immobilization on enzymatic activity. Digestions of &phis;X174-RF DNA phage and SV40 Viral DNA …


Congestion Control Mechanisms For Internet Multicast Transport Protocols., Elias George Khalaf Jan 2000

Congestion Control Mechanisms For Internet Multicast Transport Protocols., Elias George Khalaf

LSU Historical Dissertations and Theses

Internet Multicasting has emerged in the last few years as the inevitable method for efficiently delivering replicated data to multiple recipients in large scale internets. More specifically, Reliable Multicast Transport Protocols have been the subject of intensive research in recent years. The goal of such research was mainly to develop reliable and scalable protocols to efficiently and reliably deliver data to receivers, and at the same time reduce congestion on the network. In this research, we propose a new generic family of protocols, called the K family of protocols, that focus on congestion control by reducing the processing requirements on …


Interaction Of Antimicrobial Peptides With Model Cell Membranes., Lucille Dionne Smith Wright Jan 2000

Interaction Of Antimicrobial Peptides With Model Cell Membranes., Lucille Dionne Smith Wright

LSU Historical Dissertations and Theses

This research was part of a multidisciplinary effort aimed at the elucidation of the mechanism of membrane lysis by model peptides. The focus of the dissertation was to characterize the average size dimensions of model cell membranes before and after being treated by model peptides. Experiments with neutral dioleoylphosphatidylcholine (DOPC) vesicles and negatively charged dioleoylphosphabdylcholine/dioleoylphosphabdylglycerol (DOPC/DOPG) vesicles were conducted using the model peptides (KLAKKLA) 3 and (KLGKKLG)3. A melittin study was conducted alongside for comparison. Changes in membrane integrity were studied as a function of lipid-to-peptide (L:P) ratio using three techniques: kinetic light scattering (KLS), dynamic light scattering (DLS), and …


Isang Yun: His Compositional Technique As Manifested In The Two Clarinet Quintets., Youngdae Yoo Jan 2000

Isang Yun: His Compositional Technique As Manifested In The Two Clarinet Quintets., Youngdae Yoo

LSU Historical Dissertations and Theses

Born in Korea, Isang Yun (1917--1995) became one of the most prominent avant-garde composers in the world with a distinctive musical language that synthesized Far Eastern Asian philosophy, especially Chinese Taoism, with Western techniques and Korean traditional instrumental idioms. Isang Yun left about 150 works, including five works for clarinet. Among them, this essay will discuss Yun's two Quintets for Clarinet and String Quartet: Quintet I for Clarinet and String Quartet (1984) and Quintet II for Clarinet and Sting Quartet (1994). These works are representative of Yun's chamber music for clarinet. This monograph will be organized as follows: Chapter I …


Evaluation Of Insecticide Resistance In Louisiana Adult Mosquitoes And The Efficacies Of Selected Larvicides., Stacy Lee Bearden Jan 2000

Evaluation Of Insecticide Resistance In Louisiana Adult Mosquitoes And The Efficacies Of Selected Larvicides., Stacy Lee Bearden

LSU Historical Dissertations and Theses

Pesticide resistance in Louisiana mosquitoes has never been examined on a state-wide basis. In 1996, first component of this monitoring program examined selected pesticide efficacies and documented current pesticide resistance. Ground ULV-applied FyfanonRTM (96.8% malathion and Pyrocide RTM (96.8% + 1% natural pyrethrum) were applied to caged Culex quinquefasciatus adults (Denham Springs [Livingston Parish] and Lake Charles [Calcasieu Parish]) and Aedes sollicitans (Vermilion Parish). FyfanonRTM caused significantly different (p < 0.05) mortalities among each species and strain within 24hrs (95% Aedes, 48% Denham Springs, and 14% Lake Charles). Pyrocide RTM also produced significantly different mortalities (99%, 70%, and 38%, respectively). Malathion and permethrin were topically applied to 3--5 day old adult mosquitoes from 14 parishes. St. Martin parish Cx. quinquefasciatus was most susceptible to malathion (2.58 mug/mul), and the Vermilion strain was most resistant (417.05 mug/mul). Resistance is based on a ≥5-fold resistance ratio. Calcasieu parish strain was least resistant to permethrin (1.93 mug/mul), and the St. Tammany parish strain was most resistant (40.86 mug/mul). Detecting pesticide resistance by bottle bioassay technique was compared to topical bioassay. Both techniques were effective in detecting resistance for selected Aedes, Anopheles, and Culex species in Louisiana. Ground ULV 97% malathion was applied to caged Cx. quinquefasciatus adults from a mosquito abatement district, agrichemical farmland, and a susceptible colony. No significance (p > 0.05) existed in mosquito mortality between the agrichemical area and the abatement district. Bacillus thuringiensis var. israeliensis (VectoBacRTM WDG and VectoBacRTM 12AS) and Bacillus sphaericus (VectoLexRTM WDG and VectoLexRTM CG) were …


Simulations And Algorithms On Reconfigurable Meshes With Pipelined Optical Buses., Anu Goel Bourgeois Jan 2000

Simulations And Algorithms On Reconfigurable Meshes With Pipelined Optical Buses., Anu Goel Bourgeois

LSU Historical Dissertations and Theses

Recently, many models using reconfigurable optically pipelined buses have been proposed in the literature. A system with an optically pipelined bus uses optical waveguides, with unidirectional propagation and predictable delays, instead of electrical buses to transfer information among processors. These two properties enable synchronized concurrent access to an optical bus in a pipelined fashion. Combined with the abilities of the bus structure to broadcast and multicast, this architecture suits many communication-intensive applications. We establish the equivalence of three such one-dimensional optical models, namely the LARPBS, LPB, and POB. This implies an automatic translation of algorithms (without loss of speed or …


Psychosocial Correlates Of Decision Certainty In Academic Major Selection Of College Students., Claire Bienvenu Jan 2000

Psychosocial Correlates Of Decision Certainty In Academic Major Selection Of College Students., Claire Bienvenu

LSU Historical Dissertations and Theses

This study explored relationships between several psychosocial variables and academic major decision certainty. Specifically, the study purpose was four-fold. First, this study attempted to expand the traditional conceptual framework for understanding academic major selection by creating a new construct of academic major decision certainty. Second, incorporated in this study was development of new instruments to measure academic major decision certainty, student academic self-appraisal, and student academic major self-efficacy motivation. Third, this study utilized social cognitive theory to better understand academic major decision certainty as a complex, multi-faceted construct. Finally, because the sample utilized in this Study extended to all subsets …


Systematics Of The Polymorphic North American Rat Snake (Elaphe Obsoleta)., Frank Thomas Burbrink Jan 2000

Systematics Of The Polymorphic North American Rat Snake (Elaphe Obsoleta)., Frank Thomas Burbrink

LSU Historical Dissertations and Theses

The North American rat snake (Elaphe obsoleta) complex is composed of seven uniquely colored subspecies of E. obsoleta and the sister species E. bairdi. Maximum parsimony (MP) and maximum likelihood (ML) analysis of two mitochondrial DNA genes from 73 E. obsoleta and E. bairdi, produced well-supported trees that do not conform to the currently accepted subspecies. Both ML and MP trees were significantly shorter than the trees in which each subspecies was constrained to be monophyletic. The subspecies of E. obsoleta do not represent genetic lineages. Instead, molecular evidence revealed the existence of four well-supported mtDNA clades confined to particular …


The Southeastern Conference Coach: A Correlational Study Between Length Of Service And Team Performance., Jeanne Marie Boyd Jan 2000

The Southeastern Conference Coach: A Correlational Study Between Length Of Service And Team Performance., Jeanne Marie Boyd

LSU Historical Dissertations and Theses

The primary purpose of this study was to determine the influence of selected factors on the length of employment of athletic coaches at institutions in the Southeastern Conference. The study used three different populations in addressing the specific objectives of the study. The first and primary population in the study was defined the head coaches, the second population was defined as all member institutions of the Southeastern Conference, and the third population consisted of the individual sports that are supported by each institution and recognized by the Southeastern Conference. The instrument used to collect the data in this study was …


Comparative Biology And Ecology Of The Formosan Subterranean Termite, Coptotermes Formosanus Shiraki (Isoptera: Rhinotermitidae) In Louisiana., Huixin Fei Jan 2000

Comparative Biology And Ecology Of The Formosan Subterranean Termite, Coptotermes Formosanus Shiraki (Isoptera: Rhinotermitidae) In Louisiana., Huixin Fei

LSU Historical Dissertations and Theses

A laboratory study was conducted to investigate the effects of sibship patterns and different origins of colonies on mate mortality and growth of incipient colonies in the subterranean termite, Coptotermes formosanus Shiraki. Primary reproductives from New Orleans in nonsibling pairs had significantly higher mortality than sibling pairs. The average egg production for sibling and nonsibling pairs showed no overall significance in the first oviposition period, however, the average number of larvae was consistently higher in nonsibling than in sibling-founded colonies from New Orleans. After two years, the average number of eggs or larvae present in nonsibling-founded colonies was significantly higher …


Activation And Metabolism Of P-Nitrosophenoland 2,2'-Thiobis-Ethanol By Horse Liver And Human Alcohol Dehydrogenase: Toxicological Implications., Billy Fred Dudley Jr Jan 2000

Activation And Metabolism Of P-Nitrosophenoland 2,2'-Thiobis-Ethanol By Horse Liver And Human Alcohol Dehydrogenase: Toxicological Implications., Billy Fred Dudley Jr

LSU Historical Dissertations and Theses

C-nitroso compounds are reactive intermediates in the toxic sequelae of nitroarene metabolism. Alcohol dehydrogenase (ADH) contributes significantly to NADH-dependent C-nitroso reduction by cytosol relative to NAD(P)H: quinone oxidoreductase (NQOR). NADPH-dependent pNSP reduction by liver cytosol of ADH+ animals is mostly dicumarol-sensitive which implicates NQOR as the major NADPH-dependent activity. Although, extensive structural homology between horse and different isozymes of human ADH exist, significant differences occur within the active site, which account for great variability among substrate specificities, kinetic constants, and response to inhibitors. We have studied the metabolic activity of horse liver alcohol dehydrogenase (HLADH), purified class I alphaalpha, beta …


Ships, Souls, And The Administration Of The Knights Of St. John In The Fourteenth Century., Mark S. Dupuy Jan 2000

Ships, Souls, And The Administration Of The Knights Of St. John In The Fourteenth Century., Mark S. Dupuy

LSU Historical Dissertations and Theses

For a variety of reasons, the history of crusading in the later middle ages (after c. 1300) has, until recently, been a topic largely ignored by historians. Acre, the last Christian outpost in Palestine, fell in 1291, and within twenty years, one of the major corporations associated with the crusading movement, the Knights Templar, came under attack and were ultimately suppressed as a religious order. With the lack of attention to the crusade in the later middle ages came a lack of attention to the 'crusading orders;' few historians chose to make either topic a focus of study, and many …


Comparison Of Biogeochemical Functions Between Restored And Natural Bottomland Hardwood Wetlands., Rachael Grimsley Hunter Jan 2000

Comparison Of Biogeochemical Functions Between Restored And Natural Bottomland Hardwood Wetlands., Rachael Grimsley Hunter

LSU Historical Dissertations and Theses

The purpose of this research was to compare biogeochemical functions of restored and natural bottomland hardwood (BLH) wetlands to determine if re-establishment of hydrology and vegetation is equivalent to restoration of ecosystem function. Three wetland types were studied: natural BLH (NAT), restored with hydrology re-established (RWH), and restored without hydrology re-established (RWOH). Denitrification potential (DEA), soluble organic carbon (SOC), soil moisture, readily mineralizable carbon (RMC), and heterotrophic microbial activity were measured seasonally from 1997--99. Leaf litter mass, total carbon and nitrogen concentrations, moisture, and microbial activity were also measured at three soil depths in study wetlands. The effect of organic …


Characterization Of Low Dielectric Constant Pecvd Fluorinated Silicon Oxide Film And Its Application To Copper Metallization Using Tantalum As A Diffusion Barrier., Kihong Kim Jan 2000

Characterization Of Low Dielectric Constant Pecvd Fluorinated Silicon Oxide Film And Its Application To Copper Metallization Using Tantalum As A Diffusion Barrier., Kihong Kim

LSU Historical Dissertations and Theses

The reduction of RC time delay is critical in high speed and ultra density submicron devices. One of the ways to reduce RC time delay is to use fluorinated silicon oxide (SiOF) film as an intermetal dielectric material and Cu as an interconnect metal. In this study, the chemical and electrical properties of the SiOF films prepared by plasma enhanced chemical vapor deposition were studied, then the optimized film was integrated with Cu using Ta as a diffusion barrier. The deposition of the SiOF films was made by incorporating CF4 as the fluorine source into the deposition process of SiO2 …


Manipulations Of Natural System Functions Within The Mississippi Delta: A Simulation-Modeling Study., Jay Franklin Martin Jan 2000

Manipulations Of Natural System Functions Within The Mississippi Delta: A Simulation-Modeling Study., Jay Franklin Martin

LSU Historical Dissertations and Theses

This dissertation uses two estuarine spatial models and energy analysis of two river diversions within the Mississippi Delta to test the hypothesis that natural river inputs maximize marsh coverage and have net societal benefits. Substantial advancements including a higher resolution, variable time-step hydrodynamic module, a mass-balance sediment component, and a marsh colonization routine, distinguished the Mississippi Deltas Model (MDM) from the Barataria-Terrebonne Landscape Simulation Model (BTELSS). These advancements made the MDM capable of simulating the progradation of river deltas with varying river regimes. No Action Plans (NAP), simulated by both models, were used as a baseline of comparison for simulations …


Reconstruction Of Gustav Mahler's Symphony No. 5, "Adagietto" For Trombone And Piano., Yuri Murata Jan 2000

Reconstruction Of Gustav Mahler's Symphony No. 5, "Adagietto" For Trombone And Piano., Yuri Murata

LSU Historical Dissertations and Theses

The purpose of this study is to reconstruct Gustave Mahler's Symphony No.5, Adagietto, for trombone and piano and to discuss the procedure of the reconstruction. This paper is divided into four chapters. In the first chapter, there are three main introductory materials. First, definitions taken from different sources of the musical terms arrangement and transcription are given to show how inconsistently those two terms are used and to show why the writer decided to use a third term reconstruction. Second, a brief background on Mahler and his fifth symphony is provided. Third, the importance of comparing sources is discussed. In …


Narrative Structure And Characters In The Nanzi Stories Of Curacao: A Discourse Analysis., Joke Maaten Mondada Jan 2000

Narrative Structure And Characters In The Nanzi Stories Of Curacao: A Discourse Analysis., Joke Maaten Mondada

LSU Historical Dissertations and Theses

This dissertation develops a new approach to the analysis of narratives by combining the analysis of narrative structure and character analysis. Through the in-depth analysis of two stories of a collection of 32 Nanzi stories (from Curacao), which are spider/trickster stories in Papiamentu, I develop a method to analyze the structure of the Nanzi stories. My method is based on the determination of narrative division into (1) episodes, organized as macro-propositions under a macro-structure (Van Dijk 1982; 1992); (2) different sections (six), based on narrative and free clauses (Labov 1972); and, (3) major events (Barthes 1975; Chatman 1978). By applying …


Rhetoric, Prudence, And The "Morrill Act" Of 1862., Jason Brian Munsell Jan 2000

Rhetoric, Prudence, And The "Morrill Act" Of 1862., Jason Brian Munsell

LSU Historical Dissertations and Theses

The Morrill Act was the political telos of numerous rhetorical messages calling for pedagogical changes in higher education. This study examines the role of prudence in four of them. The method is a mode of textual criticism that attempts to capture the bifurcated sense of rhetorical invention: The immediate rhetorical situation, and the cultural grammar that constrains the rhetor performatively. The author illustrates how the relevant rhetorical strategies/gestures within each text and the text's textual context pointed to a certain conception of prudence. Historically, the author argues that the struggles between different notions of prudence impacted political, pedagogical action. Theoretically, …


The Effect Of Negative Events And Firm Responses On Brand Associations, Organizational Associations, And Brand Evaluations., Chris Patrick Pullig Jan 2000

The Effect Of Negative Events And Firm Responses On Brand Associations, Organizational Associations, And Brand Evaluations., Chris Patrick Pullig

LSU Historical Dissertations and Theses

This dissertation examines the impact of negative events and firm responses to such events on an associative network of brand knowledge; key consumer brand and organizational associations, risk perceptions, and brand response variables. To accomplish this objective the issue of how negative event information is integrated with an existing brand/organizational image was assessed within the framework of a consumer-brand relationship. Two between-subjects experiments were conducted using adult consumers as subjects. In Study One, negative events were found to affect associations linked to the brand and limit the brand's ability to fulfill the consumer-brand relationship. Two types of events were identified, …


A Method To Discriminate Species From Hydroacoustic Fish Sampling Systems., Rui De Paula E Silva Jan 2000

A Method To Discriminate Species From Hydroacoustic Fish Sampling Systems., Rui De Paula E Silva

LSU Historical Dissertations and Theses

Samples of species and size composition obtained by trawling were matched with the corresponding echo-distributions from two hydroacoustic and trawl surveys in the western Indian Ocean, off Mozambique, and in two surveys in the northern Gulf of Mexico. In the Mozambique surveys, a Simrad EY-M echosounder was used and the data was analyzed by applying the Craig & Forbes algorithm. In the Gulf of Mexico surveys, a BioSonics Dual-beam System (Model 102 echosounder, ESP echo-integrator, and ESP dual-beam processor) was used. The results obtained show that, provided that a particular hydroacoustic and trawl sample yielded a stable size-distribution of the …


A Matter Of Life And Death: Jose Maria Arguedas, Mario Vargas Llosa, And The Postmodern Condition., Lynn Marie Walford Jan 2000

A Matter Of Life And Death: Jose Maria Arguedas, Mario Vargas Llosa, And The Postmodern Condition., Lynn Marie Walford

LSU Historical Dissertations and Theses

Despite all that has been written in recent years on the subject of literary postmodernism, theorists and critics have yet to arrive at a consensus about the meaning of the term. In the context of Latin America, the theoretical disagreement is given an added dimension by an ongoing debate over whether the notion of postmodernism, in any of its manifestations, is relevant to contemporary Latin American letters. This study maintains that at least some of the issues raised in the debate over postmodernism are not only relevant, but crucial to an understanding of the many complex worlds of Latin America …


General Studies In Mass Spectrometry. Part A: Matrix Assisted Laser Desorption Ionization (Maldi) Analysis Of Oligonucleotides. Part B: Electrospray Ionization (Esi) Studies Of Metalloporphyrins., Victor Ewell Vandell Jan 2000

General Studies In Mass Spectrometry. Part A: Matrix Assisted Laser Desorption Ionization (Maldi) Analysis Of Oligonucleotides. Part B: Electrospray Ionization (Esi) Studies Of Metalloporphyrins., Victor Ewell Vandell

LSU Historical Dissertations and Theses

The application of mass spectrometry for the analysis of biomolecules and metalloporphyrins is the aim of the work presented within this document. Part A of this document addresses the use of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) for the analysis of oligonucleotides. The goal of Part A is to develop a better understanding of the matrix/analyte relationship in the condensed phase required for MALDI analysis of oligonucleotides. Part A also focuses on the employment of novel co-matrices to help improve oligonucleotide mass resolution and ion abundance. The objectives for Part B was to study the use of Electrospray Ionization (ESI) …


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 …


Selected Songs Of Dinos Constantinides (B. 1929)., Leonard Earl Day Jan 2000

Selected Songs Of Dinos Constantinides (B. 1929)., Leonard Earl Day

LSU Historical Dissertations and Theses

Dr. Dinos Constantinides, a prolific composer of Greek origin whose works are performed throughout the world, is Boyd Professor of Music and Coordinator of Composition Studies at the Louisiana State University School of Music. His music has received many awards, including first prize in the 1981 Brooklyn College International Chamber Opera Competition, the 1985 First Midwest Chamber Opera Conference, and the 1997 Delius Composition Contest. Dr. Dinos Constantinides writes Twentieth-Century contemporary music that is fresh, passionate, and deserves to be heard by a broader public. The purpose of this document is to better acquaint the reader with the composer, Dr. …


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, …


The Effects Of Equine Somatotropin (Est) On Reproductive Function In The Domestic Mare., Richard Anthony Cochran Jan 2000

The Effects Of Equine Somatotropin (Est) On Reproductive Function In The Domestic Mare., Richard Anthony Cochran

LSU Historical Dissertations and Theses

The effects of somatotropin on ovarian reproductive function has become a keen research area in mammalian species over the past decade. However, to date, very little information is available as to the effects of somatotropin administration on reproduction in the domestic mare. Therefore, the purpose of these experiments was (1) to determine the potential effects (if any) of administration of exogenous equine somatotropin on ovarian follicular development and plasma and follicular fluid hormone concentrations in cyclic and noncyclic mares, (2) to determine the mechanism(s) of action of somatotropin treatment on these parameters in the mare, (3) to develop an efficient …


Third -Party Organization Endorsement Of Products: An Advertising Cue Affecting Consumer Pre-Purchase Evaluation Of Goods And Services., Dwane Hal Dean Jan 2000

Third -Party Organization Endorsement Of Products: An Advertising Cue Affecting Consumer Pre-Purchase Evaluation Of Goods And Services., Dwane Hal Dean

LSU Historical Dissertations and Theses

Observation of advertising in current use suggests that a new type of ad is emerging as a product positioning tool. The new ad features third-party organization (TPO) product endorsement as one of the elements of the ad (e.g. "Car of the Year" award by Motor Trend magazine, and "4-star" mutual fund rating from Morningstar). Marketers appear to be using favorable TPO statements about their products to enact their positioning strategy. This dissertation proposed that TPO endorsements are perceived by consumers as extrinsic quality cues, similar to the established quality cues of brand, price, retailer reputation, and warranty. This proposition was …