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Self-Consistent Cluster Embedding Calculation Method And The Electronic Structure Of Nickel Oxide And Cobalt Oxide., Haoping Zheng Jan 1993

Self-Consistent Cluster Embedding Calculation Method And The Electronic Structure Of Nickel Oxide And Cobalt Oxide., Haoping Zheng

LSU Historical Dissertations and Theses

We present a self-consistent cluster embedding method to study the electronic structure of solids by ab initio, local spin density functional calculations. A theoretical discussion from the viewpoint of total energy is given, and a definition of the total energy for an embedded cluster is introduced. We have constructed a general LCGO cluster-embedding program package, and developed a procedure to simulate the spin disordered states with local antiferromagnetic (AF) order. The electronic structures of NiO and CoO are studied by this method with a high quality basis set. The two materials show similar antiferromagnetic insulating ground states with both localized …

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Stratigraphy, Diagenesis, And Petroleum Geology Of The Smackover Formation, Southwest Alabama., William James Wade Jan 1993

Stratigraphy, Diagenesis, And Petroleum Geology Of The Smackover Formation, Southwest Alabama., William James Wade

LSU Historical Dissertations and Theses

The sequence stratigraphic framework of the Smackover Formation and other Jurassic strata in southwest Alabama is delineated, with the objective of eventual correlation of equivalent sequences across the northern Gulf. Additionally, geologic controls on the diagenesis of organic matter in the Smackover Formation are examined, in order to better understand organic-inorganic interaction and hydrocarbon evolution during burial. Jurassic systems tracts of southwest Alabama differ significantly from those of the north central Gulf in that they show profound influence of antecedent topography, consequent large continental clastic influx, and a subsidence history less influenced by thermal cooling. Norphlet siliciclastics constitute a continental …

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The Significance Of Beta-72 Asparagine Methylation In C-Phycocyanin., Beth Ann Thomas Jan 1993

The Significance Of Beta-72 Asparagine Methylation In C-Phycocyanin., Beth Ann Thomas

LSU Historical Dissertations and Theses

A novel post-translationally modified asparagine, $\gamma$-N-methylasparagine (NMA), has been characterized at the $\beta$-72 site in many phycobiliproteins. The behavior of a NMA-containing peptide under Edman degradation conditions employed for sequence analysis was examined; NMA can be reproducibly identified in protein sequences by careful attention to repetitive yields and the presence of minor peaks. The effects of asparagine methylation on photosynthetic rates in the cyanobacterium Synechococcus PCC 7942 and two methylase-minus mutants was measured by steady-state oxygen evolution in whole cells. The methylase-minus mutants demonstrated lower rates of electron transfer through Photosystem II under conditions in which phycobilisomes were preferentially illuminated …

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Corporate Spinoffs: An Investigation Of Short And Long-Term Shareholder Wealth Effects., Verne Lawrence Thibodeaux Jan 1993

Corporate Spinoffs: An Investigation Of Short And Long-Term Shareholder Wealth Effects., Verne Lawrence Thibodeaux

LSU Historical Dissertations and Theses

The positive stock price reaction associated with the announcement of a corporate spinoff is well-documented but not yet explained. This work offers a new hypothesis: investor sentiment may affect the market response to the announcement of a spinoff. The results of an investigation using market-oriented proxies for investor sentiment support this hypothesis. Results of an analysis using non-market proxies for investor sentiment are not consistent with the above hypothesis. An analysis of the long-term effects on shareholder wealth of spinoffs is also conducted. It is found that pre and post-spinoff performance cannot be considered (statistically) significantly different.

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Learning Complex Recursive Rules., Ching-Liang Tseng Jan 1993

Learning Complex Recursive Rules., Ching-Liang Tseng

LSU Historical Dissertations and Theses

We consider the problem of learning complex recursive rules which involve new concepts other than those given in the input relations and which must be discovered by the learning algorithm in the course of finding rules. The existing learning methods (FOIL, FORGE, and etc.) create rules based on the given concepts or relations but they cannot create new concepts. However, in many cases one must use new intermediate concepts in order to form the recursive rules. We give a new technique for constructing such intermediate concepts and learning rules based on those concepts. We illustrate the new technique with several …

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Investigations Of Ultrafast Dynamics Of Photoexcited Hemeproteins And Iodomethane In Condensed Phase Using Transient Raman And Absorption Spectroscopies., Huiping Zhu Jan 1993

Investigations Of Ultrafast Dynamics Of Photoexcited Hemeproteins And Iodomethane In Condensed Phase Using Transient Raman And Absorption Spectroscopies., Huiping Zhu

LSU Historical Dissertations and Theses

This dissertation describes the development and application of transient Raman and absorption spectroscopies using 8 ps laser pulses for the study of photoexcitation dynamics of hemeproteins and CH$\sb3$I in the condensed phase. Transient Raman spectroscopy is a powerful ultrafast technique. Hemeproteins have been studied using this technique. The dynamics of vibrational cooling, geminate recombination, and structural change upon the photoexcitation of hemeproteins have been unambiguously separated. The vibrationally hot deoxyhemoglobin, oxyhemoglobin and photoproduct deoxy-liked hemoglobin have been directly detected. The deconvolved time constant of vibrational cooling for the species is about 2-5 ps. Direct evidence for the lack of geminate …

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Visual Transformations In Symbolic Elementary Algebra., Thomas Harold Awtry Jan 1993

Visual Transformations In Symbolic Elementary Algebra., Thomas Harold Awtry

LSU Historical Dissertations and Theses

Competence in algebra requires knowledge of parsing and transformations. The parsing component specifies the structure of algebraic expressions based on conventional operation hierarchies. The transformational component specifies the real number properties used to transform algebraic expressions into equivalent forms. In standard models of mathematical cognition, both components are conceived as strictly propositional domains (e.g., Anderson, 1983a). Kirshner (1989b) demonstrated that parsing knowledge initially is apprehended in a visual (non-propositional) modality. This dissertation extends that visual analysis beyond parsing to the transformational component. It is proposed that transformations range on a continuum from highly propositional (e.g., x(y$\sp{-1}) = ({\rm x \over …

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Stress-Strain Analysis Of Adhesive-Bonded Composite Single-Lap Joints Under Various Loadings., Chihdar Yang Jan 1993

Stress-Strain Analysis Of Adhesive-Bonded Composite Single-Lap Joints Under Various Loadings., Chihdar Yang

LSU Historical Dissertations and Theses

The objective of this study is to develop mathematical relations for stress and strain distributions of adhesive-bonded single-lap joints under cylindrical bending and tension. Based on the Theory of Mechanics of Composite Materials and Anisotropic Laminated Plate Theory, elastic models are proposed to predict the stress-strain distributions of the laminates and the adhesive under cylindrical bending and tension. A simplified elastic-plastic model is also recommended for the case of tension loading. For each case, the Laminated Anisotropic Plate Theory is first used in the derivation of the governing equations of the two bonded laminates. The entire coupled system is then …

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The Genetic Effects Of Forest Fragmentation On Amazonian Forest Birds., John Marshall Bates Jan 1993

The Genetic Effects Of Forest Fragmentation On Amazonian Forest Birds., John Marshall Bates

LSU Historical Dissertations and Theses

I present allozyme and mitochondrial DNA (mtDNA) data on the genetic structure of five species of Amazonian forest birds at two geographic scales. The five species, Glyphorynchus spirurus (family Dendrocolaptidae), Leptopogon amaurocephalus (Tyrannidae), Hypocnemis cantator, Myrmeciza hemimelaena, and Hylophylax poecilinota (all three Formicariidae), are common forest understory inhabitants throughout much of Amazonia. At the local geographic scale, I hypothesized that forest fragmentation affected genetic structure in these species. Study sites were in the Department of Santa Cruz, Bolivia. Six sites separated by 150 km or less for each species were sampled: three sites in continuous Amazonian forest, and three in …

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The Influence Of Teacher Behavior On The Distribution Of Achievement In The Classroom: An Application Of The Hierarchical Linear Model., Leslie Sanford Arceneaux Jan 1993

The Influence Of Teacher Behavior On The Distribution Of Achievement In The Classroom: An Application Of The Hierarchical Linear Model., Leslie Sanford Arceneaux

LSU Historical Dissertations and Theses

The purpose of the study was to investigate the effects of classroom practices on the distribution of achievement within the classroom as well as on mean levels of achievement through the use of the Hierarchical Linear Model (Raudenbush & Bryk, 1986). The investigation focused on sixty classrooms--thirty from schools labeled as effective and thirty from schools labeled as ineffective. Data on teacher behaviors were gathered through classroom observations during which six dimensions of effective teaching were evaluated. These behaviors were interactive time-on-task, classroom management, strategies for monitoring student progress and providing opportunities to learn, strategies for presentation of content and …

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A Framework For Assessing Consumer Satisfaction With Credence-Based Services: A Cognitive Script Approach., Bruce L. Alford Jan 1993

A Framework For Assessing Consumer Satisfaction With Credence-Based Services: A Cognitive Script Approach., Bruce L. Alford

LSU Historical Dissertations and Theses

Service marketers have long needed research developed within the services area for services application. The majority of satisfaction research has pertained to products and attributes contained by those products. Yet with the acknowledged differences between services and products, there is still a void in the services satisfaction literature. The research attempted to develop a service-based model of consumer satisfaction with credence-based services, using cognitive scripts for the formation of expectations. Scripts represent a cognitive movie of what events should happen and in what order. When this expected process of events is deviated by the service provider, correspondent inference was posited …

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Didactic Solo Piano Works By Alexandre Tansman., Susan Marie Tusing Jan 1993

Didactic Solo Piano Works By Alexandre Tansman., Susan Marie Tusing

LSU Historical Dissertations and Theses

The musical career of the Polish composer Alexandre Tansman (1897-1986) was multifaceted. He frequently performed as a pianist and conductor, and he composed numerous works for various performance media. Tansman was a well-respected musician, having received during his lifetime many awards and honors for his compositions. Among Tansman's music are numerous didactic works for solo piano. These pieces expose the student to a variety of musical genres and styles, while at the same time providing practical experience in the acquisition of musical and technical skills. This monograph examines the didactic solo piano works of Tansman, focusing primarily on the collections …

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Psychological Reactions To An Mi: A Study Of Attention And Avoidance To Cardiac Stimuli., Joseph Ila Constans Jan 1993

Psychological Reactions To An Mi: A Study Of Attention And Avoidance To Cardiac Stimuli., Joseph Ila Constans

LSU Historical Dissertations and Theses

Previous research has shown that anxiety-disordered subjects attend to information directly relevant to their area of concern. In this study, it was postulated that cardiac-related stimuli would have attention capturing characteristics for individuals with no psychiatric history but who had recently experienced a myocardial infarction (MI). To study this hypothesis, MI subjects (n = 34) and matched controls (n = 31) participated in an attentional search task. MI subjects showed slower reaction times (RT) for both cardiac and socially threatening distractors compared to RT when neutral distractors were present. For both MI and control subjects distress level was associated with …

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An Algorithm For Supervisory Multivariable Constrained Optimization Of Industrial Processes., William E. Daniel Jr Jan 1993

An Algorithm For Supervisory Multivariable Constrained Optimization Of Industrial Processes., William E. Daniel Jr

LSU Historical Dissertations and Theses

An algorithm is presented for supervisory optimization of industrial processes that combines the minimization of operating costs with process operating constraints. The supervisory algorithm manipulates the set points of a lower-level control system and the set points are updated at long enough intervals of time so that the process reaches steady state between set point updates. This steady state assumption greatly simplifies the algorithm computations and, more importantly, significantly reduces the effort required for process identification. This dissertation develops the algorithm and then presents results from its application to a simulated distillation train and reactor feed network. In both applications, …

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Computer Training: The Role Of Computer Attitudes And Behavior Modeling In The Acquisition Of Declarative And Procedural Knowledge., Drew Benjamin Brock Jan 1993

Computer Training: The Role Of Computer Attitudes And Behavior Modeling In The Acquisition Of Declarative And Procedural Knowledge., Drew Benjamin Brock

LSU Historical Dissertations and Theses

This research examined technology training (using computers as a specific instance of technology) in a framework that integrated concepts drawn from cognitive and social learning theory. Borrowing from cognitive learning theory, two types of knowledge were assessed: declarative knowledge (knowing what) and procedural knowledge (knowing how). Behavior modeling training, drawn from social learning theory, was used as the primary training methodology. It was proposed that the factors contributing to learning as a function of behavior modeling are the same factors that lead to procedural knowledge acquisition. I also examined the effects of two major attitudes toward computers in predicting computer …

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Mimesis And Poiesis In The Novel: William Faulkner's "Go Down, Moses" And The Mythopoeic Turn In The American Imagination., Paul Richard Connell Jan 1993

Mimesis And Poiesis In The Novel: William Faulkner's "Go Down, Moses" And The Mythopoeic Turn In The American Imagination., Paul Richard Connell

LSU Historical Dissertations and Theses

In the course of its development as a genre, the novel shifted in the mid-twentieth century from a mimetic model grounded in imitation and colored with pessimism, to a poietic one based on discovery and novelty and foregrounded in hope. Precipitated by a crisis in representation after Joyce, the novel found in its own history, through the recuperation of older literary forms, new possibilities of representation, and shifted away from assumptions based on fact and history, to one grounded in miracle and myth. This shift was anticipated by the theories of the German Romantics Schlegel and Novalis and is adumbrated …

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Methodological Content And Teaching Delivery Used By Vocational Teacher Education Faculty In University Council And Other Selected Higher Education Institutions., Robert Barry Blair Jan 1993

Methodological Content And Teaching Delivery Used By Vocational Teacher Education Faculty In University Council And Other Selected Higher Education Institutions., Robert Barry Blair

LSU Historical Dissertations and Theses

The purpose of this study was to identify the methodological content and teaching delivery used by vocational teacher education faculty in University Council for Vocational Education (UCVE) institutions and other selected higher education institutions (NON-UCVE). The population for this study was defined as: full-time vocational teacher education faculty in programs at Research I, Research II, and Doctorate Granting Colleges and Universities I where comprehensive vocational education programs were offered. Administrative leaders for each institution identified the vocational teacher education faculty which established the frame for the study. A stratified-random cluster sample of vocational teacher educators from UCVE institutions and NON-UCVE …

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The Relationship Of Conversational Sensitivity And Employment Interview Experience To Deception Detection In Employment Interviews., Karen Anding Fontenot Jan 1993

The Relationship Of Conversational Sensitivity And Employment Interview Experience To Deception Detection In Employment Interviews., Karen Anding Fontenot

LSU Historical Dissertations and Theses

The purpose of this study was to examine the relationship between conversational sensitivity and employment interview experience to deception detection in employment interviews. Controversial sensitivity refers to one's ability to detect and decode the verbal, paralinguistic, and nonverbal cues that occur in conversations. Two research questions were asked: (1) Is conversational sensitivity related to deception detection in employment interviews? (2) Is employment interview experience related to deception detection in employment interviews? A sample of 230 subjects (150 students and 80 professionals) participated in the study, which had two phases. In phase one, subjects completed the Conversational Sensitivity Scale, a 36-item, …

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Voices From Home: Familial Bonds In The Works Of Horton Foote (1916- )., Marion Dean Castleberry Jan 1993

Voices From Home: Familial Bonds In The Works Of Horton Foote (1916- )., Marion Dean Castleberry

LSU Historical Dissertations and Theses

For more than half a century Horton Foote has been regarded as one of America's foremost dramatists. Born and reared in Wharton, Texas, he wrote his first play Wharton Dance in 1939, at the age of twenty-three, and gained his first Broadway production, Only The Heart, in 1944. His success as a playwright led to television, for which he wrote some of his finest dramas, and finally to a distinguished career in film. Foote has received numerous awards for his plays and screenplays, including Academy Awards for To Kill A Mockingbird (1962) and Tender Mercies (1983) and an Academy Award …

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The Distribution Of Toxic Sources In Louisiana: An Analysis Of Community Socioeconomic Characteristics And Industry Behavior., Salpie Sarkis Djoundourian Jan 1993

The Distribution Of Toxic Sources In Louisiana: An Analysis Of Community Socioeconomic Characteristics And Industry Behavior., Salpie Sarkis Djoundourian

LSU Historical Dissertations and Theses

The distribution patterns of toxic sources in Louisiana reveal that some communities may be disproportionately exposed to potential environmental risks. This dissertation examines whether the location and environmental control behavior of toxic polluters are systematically related to the socioeconomic and racial characteristics of communities. The study identifies who lives in the immediate proximity of toxic sources and determines whether the characteristics of these communities are different from those of Louisiana's general population. The results reveal that income levels in communities that host toxic sources are consistently and significantly lower than the state averages. A distance gradient analysis indicates that as …

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An Examination Of The Role Of Collateral In The Loan Contracting Process., Gregory Kenneth Faulk Jan 1993

An Examination Of The Role Of Collateral In The Loan Contracting Process., Gregory Kenneth Faulk

LSU Historical Dissertations and Theses

This study examines the competing roles advocated for collateral in a loan contract: solving problems of adverse selection, underinvestment, incentive contracting, bankruptcy and dilution of the monitoring services provided by banks. These theories cannot be separated based upon the effect of collateral on the borrowing firm's share price. Market based evaluations for security produce: (1) a positive response for small firms in an event study, but not confirmed with multiple regression; (2) a negative association for NASDAQ listed firms with regression, but not with event study methods; and (3) no response for NYSE/Amex firms with either method although they comprise …

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Object-Oriented Modeling And Design Using Delta, An Incremental Design Language., Nancy Kay Gautier Jan 1993

Object-Oriented Modeling And Design Using Delta, An Incremental Design Language., Nancy Kay Gautier

LSU Historical Dissertations and Theses

Object-oriented technology has opened the doors for many new ideas in system development. The object-oriented paradigm has produced many new object-oriented programming languages. As with any new methodology, a need for formalism arises to remove ambiguities and inconsistencies and to bring a sense of continuity to software design. Formal languages provide a sound basis for software development throughout the software life cycle. This work presents a set of characteristic features for object-oriented design languages and defines a formal object-oriented design language, DELTA. The rapidly changing face of software has led to an ever increasing need to update out-of-date methods and …

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Pedogenic Development Of Soils At High Altitude In Burundi., Salvator Kaburungu Jan 1993

Pedogenic Development Of Soils At High Altitude In Burundi., Salvator Kaburungu

LSU Historical Dissertations and Theses

To evaluate the effects of long-term cultivation and pasture on deforested soils at high altitude in Burundi, comparisons of morphological, physical, chemical and mineralogical properties of soils under natural forest with their counterparts under cultivation and pasture were performed. A typical soil under natural forest classifies as fine, oxidic, isomesic, Typic Haplorthods. Cultivated soils classify as fine, oxidic, isothermic Humic Hapludoxs. Pastured soils classify as fine, oxidic, isothermic, allic Humic Hapludoxs. When the sombric horizon is prominent, they classify as Sombriudoxs. We proposed a Spodic subgroup for the Hapludoxs. The studied area was highly weathered prior to faulting and uplifting …

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Pollutant Transport In Buoyancy Driven Atmospheric Flows., Youn-Seo Koo Jan 1993

Pollutant Transport In Buoyancy Driven Atmospheric Flows., Youn-Seo Koo

LSU Historical Dissertations and Theses

Due to the complexity of some buoyancy driven atmospheric flows, it is sometimes not possible to accurately predict pollutant transport on the basis of sparse wind field measurements. A possible solution is mathematical modelling of both the flow and pollutant transport. In order to overcome shortcomings of the conventional E-$\epsilon$ model such as defining proportionality coefficients (c$\sb{\rm m},$ c$\sb{\rm h})$ and to develop a more general model of stratified environmental flows, a modified E-$\epsilon$ model was proposed through use of the algebraic stress model including wall proximity effects. The resulting model was compared herein to data and higher order simulations …

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An Examination Of The Spontaneously Generated And Retold Narratives Produced By Gifted/Learning-Disabled Adolescents From An Integrated Perspective Of Language Development., Phebe Archon Hayes Jan 1993

An Examination Of The Spontaneously Generated And Retold Narratives Produced By Gifted/Learning-Disabled Adolescents From An Integrated Perspective Of Language Development., Phebe Archon Hayes

LSU Historical Dissertations and Theses

Few studies have examined the narrative abilities of gifted children with learning disabilities. This study investigated the ability of eighth-grade gifted children with learning disabilities (gifted/LD) to produce oral and written narratives by comparing their stories to those produced by gifted peers with no learning deficits (nonLD/gifted). It was hypothesized that evidence of difficulty generating the stories relative to the macrostructure (organization of ideas across sentences) and the microstructure (organization of ideas within sentences) would be exhibited by the gifted/LD population. Twenty, 13-year-old eighth-graders served as subjects in the present investigation. All were identified as gifted by their local school …

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Hydrogeochemistry Of Saline Waters In Aquifers Of Tertiary And Younger Age In Northeastern Louisiana And Southeastern Arkansas., Glenn Fredrick Huff Jan 1993

Hydrogeochemistry Of Saline Waters In Aquifers Of Tertiary And Younger Age In Northeastern Louisiana And Southeastern Arkansas., Glenn Fredrick Huff

LSU Historical Dissertations and Theses

Solute source tracing using Br/Cl and $\rm\sp{87}Sr/\sp{86}Sr$ ratios indicate that the source of brackish water in the Mississippi River alluvial and Jasper aquifers of Concordia Parish, Louisiana are brines and saline waters from the Wilcox aquifer. The proximity of maximum concentrations of dissolved solids to the location of plugged and abandoned oil wells and test holes indicates that brines and saline waters have migrated upward through these oil wells and test holes. Br/Cl ratios in the Wilcox aquifer suggest dissolution of halite as a major source of dissolved solids. Apparent thermodynamic equilibrium exists between plagioclase and kaolinite, plagioclase and Na-smectite, …

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The Development Of An Inventory To Measure Bereavement., David Nicholas Hayes Jan 1993

The Development Of An Inventory To Measure Bereavement., David Nicholas Hayes

LSU Historical Dissertations and Theses

This study describes the development of a self-report inventory to measure bereavement. The inventory was called the Hayes Bereavement Inventory (HBI). Items for the inventory were provided by four grief therapists with at least three years of experience in bereavement counseling. Items were written in a format similar to the Beck Depression Inventory. Four hundred and forty adults bereaved in the past five years completed the bereavement inventory, three widely used self-report measures of depression, anxiety, and anger, and the Eysenck Personality Questionnaire. Respondents lost loved ones to death from a variety of causes which included medical diseases, car accidents, …

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Mobilization Of A Hydrophobic Organic Compound Using Surfactant For Soil Washing., Minwen Liu Jan 1993

Mobilization Of A Hydrophobic Organic Compound Using Surfactant For Soil Washing., Minwen Liu

LSU Historical Dissertations and Theses

Soil washing using surfactants is a promising alternative for the conventional pump-and-treat method of removing hydrophobic organic compounds. The interactions and the transport of the chemicals have been studied by batch and column experiments. Sodium dodecylsulfate (SDS), an anionic surfactant, and anthracene, a hydrophobic organic, were chosen as the representative surfactant and contaminant, respectively. Fine sand and native soil were used as formation media. The experimental results indicated that the maximum loss of SDS on native soil from the solution was observed when the aqueous SDS concentration was in the region of the critical micelle concentration, and this loss was …

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Engineering Analysis Of Solid Waste Management., Woodward Reid Lea Jan 1993

Engineering Analysis Of Solid Waste Management., Woodward Reid Lea

LSU Historical Dissertations and Theses

A practical methodology has been developed to analyze the cost of integrated solid waste management, which is defined as the selection and application of suitable techniques, technologies and management programs to achieve specific waste management objectives and goals, using some combination of recycling, composting, transfer to remote disposal, waste-to-energy, and landfills. The cost of both integrated and non-integrated solid waste management systems can be accurately analyzed by the methodology. Regional waste management scenarios can also be evaluated and the resulting cost estimates compared to the cost of current local waste management. A computer model has been written to execute the …

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Development And Evaluation Of An Expert System Approach To Uneven-Aged Management Of Loblolly-Shortleaf Pine Stands In The West Gulf Region., Alfredo Baptista Lorenzo Jan 1993

Development And Evaluation Of An Expert System Approach To Uneven-Aged Management Of Loblolly-Shortleaf Pine Stands In The West Gulf Region., Alfredo Baptista Lorenzo

LSU Historical Dissertations and Theses

Forest managers expend significant time and effort seeking, organizing, and synthesizing information relevant to making effective forestry decisions. Oftentimes, they must rely on the knowledge and experience of human experts, a resource that is in short supply, requires many years to acquire, and is concentrated in a few individuals. This research task suggests expert systems as one viable solution to the problems of technology transfer and automating and maintaining expertise in consistent and usable form. Expert systems are practical computer programs which solve problems that were previously considered only solvable by human expertise. The expert system developed in this research, …

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