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LSU Historical Dissertations and Theses

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Musical Invention And Poetry In The Late Vocal Works Of Anton Webern., Melanie S. Kronick Jan 1992

Musical Invention And Poetry In The Late Vocal Works Of Anton Webern., Melanie S. Kronick

LSU Historical Dissertations and Theses

From the time of his composition of Op. 23 (1933-34) until his death, Anton Webern composed a series of important twelve-tone vocal works whose texts are drawn exclusively from the poetry of Hildegard Jone. Yet Webern scholars typically ignore the texts of these works when analyzing the scores in which the poems are embedded. My discussion shows, however, that Webern made important musical choices as a result of the poetic content of his texts. While Jone's poems are plentiful in metaphors of natural phenomena and images from German romantic poetry, I argue that they are concerned as much with poetic …

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The Difference That Made A Difference: Nuances Of A Transformative Curriculum In The Life History Of Joy Hamilton, A Child Who Has Severe Disabilities., Phyllis James Leone Jan 1992

The Difference That Made A Difference: Nuances Of A Transformative Curriculum In The Life History Of Joy Hamilton, A Child Who Has Severe Disabilities., Phyllis James Leone

LSU Historical Dissertations and Theses

Literature emerging in the field of special education advocates a significant departure from the traditional approach that has guided special education practices, procedures, and, ultimately the decisions made about children. To date, this literature and the debates it generates are focused primarily on special education for children who have mild or moderate disabilities. The dearth of information regarding the implications of an alternative approach for children who have severe disabilities is wanting. This study examines the life history of Joy Hamilton, a child who has severe disabilities, to reveal how curriculum has affected her life. Joy's birth, her infant intervention …

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Cosmology And Curriculum: A Vision For An Ecozoic Age., Angela T. Lydon Jan 1992

Cosmology And Curriculum: A Vision For An Ecozoic Age., Angela T. Lydon

LSU Historical Dissertations and Theses

The text of this dissertation explores interconnections between cosmology and curriculum. I believe the demands of an Ecozoic Age will initiate a reconceptualizing of curriculum. Further, I believe the particular cosmological perspective I advance can help us with this reconceptualization. Chapter 1 utilizes the multi-faceted insights of scientific, historical, and speculative thought. The texts used in this chapter incorporate an engagement with past cultures (Ong, Eliade), with contemporary theoretical perspectives (Munitz, Haught, and Stafford), and with a scholarship that envisions alternative futures (Bohm). Chapter 2 uncovers how modernity's relationship to the earth is rooted in the scientific, political, and social …

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Physiological Studies On Postharvest Leaf Blackening In Cut Flower Protea Species., Margaret Robyn Mcconchie Jan 1992

Physiological Studies On Postharvest Leaf Blackening In Cut Flower Protea Species., Margaret Robyn Mcconchie

LSU Historical Dissertations and Theses

To develop an understanding of the physiology which results in postharvest leaf blackening, cut flower Protea species were studied in relation to changes in leaf carbohydrate metabolism, membrane deterioration, and oxidative enzyme activity. Rapid development of leaf blackening in the dark was correlated with low starch and sucrose concentrations. Postharvest decline in leaf carbohydrate status appears to be associated with inflorescence sink demand. Leaf blackening was reduced in the light and carbohydrate pools were maintained due to photosynthesis. In floral stems of P. neriifolia, P. Susannae x compacta and P. eximia (which have differing susceptibilities to leaf blackening), leaf blackening …

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"Mademoiselle De Maupin": A Close Reading And Study Of The Process Of Subjectivity In Theophile Gautier's Early Nineteenth Century Novel., Rebecca Lucille Tebeau Jan 1992

"Mademoiselle De Maupin": A Close Reading And Study Of The Process Of Subjectivity In Theophile Gautier's Early Nineteenth Century Novel., Rebecca Lucille Tebeau

LSU Historical Dissertations and Theses

This dissertation proposes a close reading of Theophile Gautiers's Mademoiselle de Maupin. The purpose of this reading is to explore subjectivity by first assuming that it is a process, enacted by the protagonist's explorations of their own identities, but not an object contained in their elaborations. This view of subjectivity implies both the representational strategies of the protagonists, as well as the narrative strategies of the text. Since Mademoiselle de Maupin's narrative structure is so inconsistent and self-conscious, the explorations of self within the text draw attention to both the fiction of identity and the "identity" of fiction as a …

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Global Diversification And Firm Performance: A Dynamic Perspective., Chuncheong Wan Jan 1992

Global Diversification And Firm Performance: A Dynamic Perspective., Chuncheong Wan

LSU Historical Dissertations and Theses

In concert with increasing attention to global competition, global diversification has emerged as a significant area of study in strategic management. This study examined a sample of U.S. manufacturing firms to investigate several important issues in the relationship between global diversification and firm performance. The results showed that changes in global diversification have a significant influence on changes in all accounting measures of performance used in this study. However, when the data were analyzed cross-sectionally, global diversification had only a limited influence on profitability and its stability. This indicates that attempts to postulate any dynamic relationship with inference from cross-sectional …

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Studies On Escherichia Coli Cell Division: Overexpression, Purification, And Quantitative Determination Offtsa Protein., Haichao Wang Jan 1992

Studies On Escherichia Coli Cell Division: Overexpression, Purification, And Quantitative Determination Offtsa Protein., Haichao Wang

LSU Historical Dissertations and Theses

FtsA is an essential cell division protein which is synthesized in minute amounts in Escherichia coli. To study the effects of overexpressing ftsA on the phenotype of E. coli cells, DNA fragments encoding the ftsA gene were subcloned downstream of a lac or a tac promoter in two plasmids. High-level expression of the ftsA gene from these promoters inhibited normal cell septation and caused the cells to become long, nonseptate filaments. Continued overexpression of ftsA resulted in the filaments developing spherical bulges up to 4 um in diameter. It is suggested that these bulges may emanate from septation sites because …

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The Effects Of Dietary Sodium Zeolite A On Growth And Mineral Utilization Of Chickens., Kevin Lee Watkins Jan 1992

The Effects Of Dietary Sodium Zeolite A On Growth And Mineral Utilization Of Chickens., Kevin Lee Watkins

LSU Historical Dissertations and Theses

Four experiments were conducted to investigate the effects of sodium zeolite A (SZA) on calcium (Ca), phosphorus (P), and zinc (Zn) utilization in broiler chickens from 5 to 14 or 15 days of age. In Experiment 1, two levels each of SZA (0 and.75%) and (or) Ca (1.0 and 1.5%) were fed to both uninfected and Eimeria acervulina-infected chicks. Excess dietary Ca reduced (P $$.10) in infected chicks (Ca x coccidiosis, P $<$.05). Addition of SZA to diets with excess Ca further decreased (P $<$.05) gain and tibia ash. These results suggest that SZA may exacerbate the adverse effects of excess dietary Ca. In Experiment 2, four levels of dietary Ca (.6,.8, 1.0, and 1.2%) and (or) two levels of SZA (0 and.75%) were fed. Sodium zeolite A decreased (P $<$.05) plasma P and tibia magnesium (Mg) but increased (P $<$.05) tibia Ca, Zn, aluminum (Al), and manganese (Mn). Tibia ash and shearing force were increased in chicks fed SZA and inadequate dietary Ca, but were decreased in chicks fed SZA and 1.2% Ca (Ca x SZA, P $<$.05). Dietary SZA enhanced tibia ash, density, and shearing force when dietary Ca was low; however, SZA reduced many bone mineralization indices in chicks fed excess Ca. In Experiment 3, various levels of dietary P (.41,.55, and.69%), Ca (.6 and 1%), and (or) SZA (0 and.75%) were fed. The addition of Ca, SZA, or both exacerbated the adverse effects of feeding low-P diets, yet alleviated the adverse effects of feeding low-Ca, high-P diets. Dietary SZA reduced (P $<$.01) plasma P and increased (P $<$.02) tibia Mn, Zn, copper (Cu), and Al. The SZA-induced increase in tibia Al was most evident in chicks fed low levels of P (SZA x P, P $<$.02). These data demonstrate that the effects of SZA are influenced by dietary concentrations of Ca and P, and that the addition of SZA to diets low in P results in bone Al accumulation. In Experiment 4, the effects of SZA on chicks fed inadequate (35 ppm), marginal (40 ppm), adequate (85 ppm), and excess (4,000 ppm) levels of Zn were assessed. Sodium zeolite A increased (P $<$.05) tibia and pancreas Zn regardless of dietary Zn concentration. Dietary SZA tended to alleviate the adverse effects of feeding inadequate Zn and exacerbate the adverse effects of feeding excess Zn.

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Monte Carlo Studies Of The Critical Phenomena In Carbon Monoxide Oxidation., Bing Yu Jan 1992

Monte Carlo Studies Of The Critical Phenomena In Carbon Monoxide Oxidation., Bing Yu

LSU Historical Dissertations and Theses

It is well established that anisotropy does not affect the critical behavior of a system in thermodynamic equilibrium undergoing a second order phase transition. We study here an anisotropic kinetic model for heterogeneous catalysis which mimics the oxidation of CO on the (110) surface of a transition metal like Pd. In this model, the oxidation process occurs at an infinite reaction rate. We mapped out the phase diagram of possible steady states for various anisotropic reaction and absorption processes as a function of the O$\sb2$/CO adsorption rate and the CO diffusion rate. The phase diagram depends upon the amount of …

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Modeling Three-Dimensional Groundwater Flow And Solute Transport By The Finite Element Method With Parameter Estimation., Fang Xin Yu Jan 1992

Modeling Three-Dimensional Groundwater Flow And Solute Transport By The Finite Element Method With Parameter Estimation., Fang Xin Yu

LSU Historical Dissertations and Theses

A general, systematic and improved numerical formulation for the three-dimensional (3-D) groundwater flow and solute transport problems was derived, using the finite element method. In the numerical formulation, a hidden mistake, which has appeared in many textbooks and journal papers dealing with the advective term of the general 3-D solute transport equation, was found and corrected. Some simpler and practical expressions for the leaky boundary condition, surface flux condition, and sources and sinks were proposed. To improve the conventional formulation for the time derivatives, a combination of the Galerkin method and the collocation method was developed. A more accurate scheme …

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An Investigation Of The Relationship Between Severity Of Specific Adhd Symptoms And Parent And Child Locus-Of-Control Orientation In The Expression Of Parental Stress., Esther Marie Winters Jan 1992

An Investigation Of The Relationship Between Severity Of Specific Adhd Symptoms And Parent And Child Locus-Of-Control Orientation In The Expression Of Parental Stress., Esther Marie Winters

LSU Historical Dissertations and Theses

This study investigated the effects of the child's specific ADHD symptoms, aggressive symptoms, and the parents' and child's locus of control orientation on parental stress. The frequently overlooked heterogeneous nature of the ADHD population was addressed, by assessing specific ADHD symptoms and the presence of aggressive symptomatology. Sixty boys, ages 6 to 12 years, diagnosed (using DSM-III-R criteria) as having ADHD by a licensed clinical psychologist in private practice, and their parents participated in the study. Parents were asked to sign a consent form and complete measures of parental locus of control and parenting stress. A children's locus of control …

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Plasticity-Damage Bounding Surface Model For Concrete Under Cyclic-Multiaxial Loading., Taher Mowafaq Abu-Lebdeh Jan 1992

Plasticity-Damage Bounding Surface Model For Concrete Under Cyclic-Multiaxial Loading., Taher Mowafaq Abu-Lebdeh

LSU Historical Dissertations and Theses

Concrete exhibits a significant strain-softening behavior beyond the peak stress, and moreover, the mechanism of inelastic deformation in concrete consists of both plastic slip and microcracking. Hence, a combined plasticity and damage mechanics model is proposed for modeling concrete behavior under both multiaxial monotonic and cyclic loadings. The model adopts a bounding surface concept for both plasticity and damage. The introduced plasticity bounding surface is a function of the maximum compressive strain experience by the material, while the damage bounding surface is a function of the accumulated damage parameter. By this definition, both surfaces shrink in size in the stress …

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Decolonizing The Text: Glissantian Readings In Caribbean And African-American Literatures., Debra Lynn Anderson Jan 1992

Decolonizing The Text: Glissantian Readings In Caribbean And African-American Literatures., Debra Lynn Anderson

LSU Historical Dissertations and Theses

This dissertation proposes to derive a critical reading from the writings of the Martinican poet, novelist, and theorist, Edouard Glissant. This reading would most directly involve, but not limit itself to, literatures written by black writers from the Caribbean and the United States. As critics such as Christopher Miller and Anthony Appiah suggest, these literatures have become the ground upon which colonization is symbolically re-enacted. Criticism colonizes these literatures by its textual appropriation, its imposition of Western critical models, and by bringing its own assumptions to the text. The critically acclaimed prefaces of Jean-Paul Sartre ("Orphee noire") and Andre Breton …

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Edwardsiella Ictaluri: Pathogenic Mechanisms And Antigens Recognized By Infected Channel Catfish., Thomas James Baldwin Jan 1992

Edwardsiella Ictaluri: Pathogenic Mechanisms And Antigens Recognized By Infected Channel Catfish., Thomas James Baldwin

LSU Historical Dissertations and Theses

To clarify early events in the pathogenesis of enteric septicemia of catfish, 140 channel catfish fingerlings (Ictalurus punctatus) were each infected with approximately 1.0 $\times$ 10$\sp9$ colony forming units Edwardsiella ictaluri (E. ictaluri) by intragastric intubation. Fish were sacrificed at 0, 0.25, 0.5, 1, 3, 6, 12, 24, 48, 72, 96, and 120 hours post infection (PI). Multiple tissue samples were evaluated by gross observation, light and electron microscopy, and immunohistochemical methods. In addition, stomach, intestine, trunk kidney, and liver were cultured quantitatively for bacteria. Trunk kidney cultures were positive by 0.25 hours PI, indicating rapid transmucosal passage. Histologic lesions …

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Dialogue Journal Writing In A Foreign Language Classroom: Assessing Communicative Competence And Proficiency., Lynn Patricia Baudrand-Aertker Jan 1992

Dialogue Journal Writing In A Foreign Language Classroom: Assessing Communicative Competence And Proficiency., Lynn Patricia Baudrand-Aertker

LSU Historical Dissertations and Theses

This research studied dialogue journal writing, as it occurred between a teacher and twenty-one students in a French III high school. Results on attitude questionnaire indicated that dialogue journals helped students overcome their fear of the written form and increase their self-confidence and willingness to write. By demystifying the writing process, writing in their dialogue journals helped these students develop positive attitudes. The results on writing proficiency pre and post-tests indicated that students performed as well or better than students after four years of a foreign language in a high school setting or four semesters of college instruction. The dialogue …

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The Use Of Hydrologically Altered Wetlands To Treat Wastewater In Coastal Louisiana., Andree Marie Breaux Jan 1992

The Use Of Hydrologically Altered Wetlands To Treat Wastewater In Coastal Louisiana., Andree Marie Breaux

LSU Historical Dissertations and Theses

Two major environmental problems currently affecting Louisiana are a high rate of coastal wetland loss and high levels of surface water pollution. The application of secondarily treated wastewater to wetlands is proposed as a means of dealing with these problems. The benefits of wetland wastewater treatment include improved surface water quality, increased accretion rates to balance subsidence, improved plant productivity, and decreased capital outlays for conventional engineering treatment systems. Wetland treatment systems can be designed and operated to restore deteriorating wetlands to previous levels of productivity. Hydrologically altered wetlands in the Louisiana coastal zone have been selected as appropriate for …

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The Methodological Issues Of Variance In Teacher Behavior And Student Achievement: The Relationship Of Variance To School And Teacher Effectiveness., Linda Jane Crone Jan 1992

The Methodological Issues Of Variance In Teacher Behavior And Student Achievement: The Relationship Of Variance To School And Teacher Effectiveness., Linda Jane Crone

LSU Historical Dissertations and Theses

Three different issues were involved in this study. Issue I examined the means and variances of teacher behavior for teachers in effective school versus teachers in ineffective schools. Five teachers were evaluated from grade three and grade five of five effective and six ineffective schools (25 teachers from effective schools and 30 teachers from ineffective schools). Observations of seven dimensions of teaching behavior were conducted. In every case, the group means of teacher behavior were higher for the teachers in the effective school category. An examination of the coefficients of variation indicated that the dispersion of scores for the teachers …

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Pedological Investigation Of Mangrove Soils In Relationship To Rice Management In The Republic Of Guinea., Sekou Cisse Jan 1992

Pedological Investigation Of Mangrove Soils In Relationship To Rice Management In The Republic Of Guinea., Sekou Cisse

LSU Historical Dissertations and Theses

Mangrove soils along the Guinea coast are among the most fertile and potentially suitable soils for rice production. Rice production success and feasibility is hampered by adverse soil chemistry conditions and the use of traditional farming methods. The objectives were to undertake a pedological investigation to characterize these soils during the wet and dry seasons, provide an understanding of fertility constraints, and develop a management plan to improve rice production. Seasonally and permanently flooded soils categories were recognized. Seasonally flooded soils are subjected to drainage and permanent protection from saltwater intrusion. These soils were correlated as Typic Endoaquerts, Typic Endoaquepts, …

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An Exploration Of Principal Change Facilitator Style, Teacher Bureaucratic And Professional Orientations, And Teacher Receptivity To Change. (Volumes I And Ii)., Sheila Weaks Chauvin Jan 1992

An Exploration Of Principal Change Facilitator Style, Teacher Bureaucratic And Professional Orientations, And Teacher Receptivity To Change. (Volumes I And Ii)., Sheila Weaks Chauvin

LSU Historical Dissertations and Theses

The primary purpose of this study was to utilize conceptions of principal change facilitator style, bureaucratic and professional orientations and teacher receptivity to change to extend our understanding of schools as organizations and to develop a comprehensive theoretical conception of planned organizational change in schools. A secondary purpose of this study was to report the results of a series of data analyses used to refine operational definitions of the study variables. This study is the first known in the literature to examine relationships among these variables in concert with a common set of schools, principals and teachers. The sample for …

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Effects Of Stress, Dietary Restraint, And Disinhibition Upon Eating Habits And Nutrition., Barbara Ann Cubic Jan 1992

Effects Of Stress, Dietary Restraint, And Disinhibition Upon Eating Habits And Nutrition., Barbara Ann Cubic

LSU Historical Dissertations and Theses

Restraint theory states that for some individuals physiological factors which normally result in eating compete with cognitive efforts to resist eating (i.e. dietary restraint). This disparity has been hypothesized to result in a chronic state of stress which leads to reduced behavioral control and increased negative affect. It has been presumed that dietary restraint is a precondition for overeating. Despite the legitimacy of proposing a link between stress, dietary restraint and overeating this interaction has not received intensive study. Furthermore, studies which have attempted to assess this relationship have not investigated the possible independent and interactive influences each of these …

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Re-Thinking Readings And Writing In The Study Of Literature., Mary Ann Doyle Jan 1992

Re-Thinking Readings And Writing In The Study Of Literature., Mary Ann Doyle

LSU Historical Dissertations and Theses

While the field of academic literary studies continues to engage in contested debate over defining and revising its curricula (Graff, 1987), teachers remain situated at the sometimes contradictory and often isolated intersections of theory and practice. Decisions made about writing in literature classes, selecting texts for course syllabi, and pedagogical style are most often negotiated at the level of the individual teacher, who may or may not be responding to an increasing incidence of departmental restructuring, recommendations, prohibitions, or political pressures. Though there is no scarcity of disagreements and accusations about what revisionary approaches 'mean', (Fieldnotes, Spring 1992), there is …

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Synthesis Of Novel Metallocenes: Asymmetric Hydrogenation Catalysts To Conductive Polymers., Mark Steven Erickson Jan 1992

Synthesis Of Novel Metallocenes: Asymmetric Hydrogenation Catalysts To Conductive Polymers., Mark Steven Erickson

LSU Historical Dissertations and Theses

The goal of this research was to synthesize conductive polymers based on repeating ferrocene units. During the course of this study, the design of the conductive polymers evolved from the initial model based on "stacked" ferrocenes where ethano bridged cyclopentadienyl rings are linked by iron(II), to the latest ferrocene-diene model where ferrocene units were linked by double bonds. In the pursuit of these elusive monomers, attempts at their synthesis led down dead-end routes, even though new molecules were synthesized. Some of these dead-ends proved productive as in the synthesis of chiral titanocene derivatives. All the work reported in this dissertation …

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Nonlinear Stochastic Modeling Of Daily Temperature Series., Glenn Poloyapoy Fernandez Jan 1992

Nonlinear Stochastic Modeling Of Daily Temperature Series., Glenn Poloyapoy Fernandez

LSU Historical Dissertations and Theses

The major objective of this research is to develop daily time series models for maximum and minimum temperature series. A generalized modeling methodology is presented. Stochastic modeling was accomplished by analyzing the structural characteristics of the temperature series. Analyses included assessment for time reversibility, linearity, structural dependence and distributional properties of the weakly stationary series obtained by parametric standardization of the observed series. Based on the results of the structural characterization of the series and the results of the model class identification using a 'state-dependent model' formulation, a bilinear model class was identified as appropriate for the temperature series. Various …

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Modernity And War In The Poetry Of T. S. Eliot., Patricia Anne Gabilondo Jan 1992

Modernity And War In The Poetry Of T. S. Eliot., Patricia Anne Gabilondo

LSU Historical Dissertations and Theses

Although most readers of T. S. Eliot have agreed that the European experience of world war and the resultant political and cultural dislocations provided an important context and source of imagery for much of his work, what has not been recognized is Eliot's use of figures of war to represent the intimate yet antagonistic relations between the poet's writing of modernity and the text that is history. Beginning with a tropological analysis of Eliot's "A Note on War Poetry," relative to both the genre of war poetry and aesthetic modernity, this study examines the figural interpenetration of war and literary …

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Identification Of Plant Science Concepts Needed In Agriscience Programs Of The Future., Camile Patrick Gaspard Jan 1992

Identification Of Plant Science Concepts Needed In Agriscience Programs Of The Future., Camile Patrick Gaspard

LSU Historical Dissertations and Theses

The purpose of this study was to identify the plant science concepts which should be taught in secondary agriculture programs of the future as perceived by innovators in the field of plant science. The Delphi technique was used to gain the perceptions of a nation-wide panel of plant science professionals. The panel was comprised of three groups of plant scientists: secondary plant science teachers, university plant scientists, and plant scientists working in industry. The secondary plant science teachers were selected from the national and regional winners of the agriscience teacher award. The university plant scientists and plant scientists working in …

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Assemblage Of Spinach Photosystem Ii Proteins: Cpa-1 And Msp Interactions., Carlos Benito Queirolo Jan 1992

Assemblage Of Spinach Photosystem Ii Proteins: Cpa-1 And Msp Interactions., Carlos Benito Queirolo

LSU Historical Dissertations and Theses

This work focuses on the production and characterization of crosslinked products obtained from PS II preparations, with the aim of better understanding the structural relationships between the manganese stabilizing protein (MSP) and the interior antenna protein CPa-1. Two oxygen evolving reaction center (OERC) preparations, OERC complex and OERC core, produced various crosslinked products with the hydrophobic crosslinker dithio-bis-(succinimidyl propionate) (DTSP). Crosslinking experiments with OERC complex demonstrated that a close association of MSP to CPa-1 occurs, as both proteins were found to be present simultaneously in various crosslinked products revealed by one- and two-dimensional electrophoretic and immunoblotting techniques. These crosslinked products …

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An Evaluability Assessment Of The Louisiana Cooperative Extension Service 4-H Program., Robert F. Richard Jan 1992

An Evaluability Assessment Of The Louisiana Cooperative Extension Service 4-H Program., Robert F. Richard

LSU Historical Dissertations and Theses

In evaluation practice, Evaluability Assessment (EA) is recognized as an affective tool to determine if a plausible program logic exists before the effort is made to evaluate impact. Applying EA in the Cooperative Extension System, if programs lacked plausibility, the process was used as a design tool. Following the steps recommended in this process, a representative work group of Extension agents, specialists and administrators: (1) identified and developed an educational effects matrix for each of five target audiences of the 4-H program--4-H youth, other youth, family members, leaders and policy makers; (2) abstracted themes emerging from telephone interviews of 95 …

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Demonstration Of A Control Strategy For Sustained Algal Growth At A Full-Scale Level Under Computer-Automated, Continuous Culture Conditions., Kelly Ann Rusch Jan 1992

Demonstration Of A Control Strategy For Sustained Algal Growth At A Full-Scale Level Under Computer-Automated, Continuous Culture Conditions., Kelly Ann Rusch

LSU Historical Dissertations and Theses

A computerized algal turbidostat was designed and constructed for use in aquaculture facilities requiring a continuous feed source. Continuous cultures, maintained in the exponential growth phase by the continual introduction of fresh media, exhibit a steadystate nature easily adaptable to computer automation and optimization processes. These characteristics, in contrast to batch culture methods, result in both reduced land and labor requirements; an important consideration for commercial applications wherein algal production occupies as much as 40 percent of a facility in both space and cost. The turbidostat system consisted of two 0.6 m$\sp3$ growth chambers supported by a central monitoring block …

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Modification Of The Drainmod-Creams Model To Incorporate A Nutrient Submodel., Abdul Razak Bin Saleh Jan 1992

Modification Of The Drainmod-Creams Model To Incorporate A Nutrient Submodel., Abdul Razak Bin Saleh

LSU Historical Dissertations and Theses

DRAINMOD-CREAMS model was used to simulate surface runoff and sediment loss from subsurface drained plot and non-subsurface drained plot in southern Louisiana. Seven years (1981-1987) of recorded data were used in this study. In general, the performance of the model in simulating surface runoff and sediment loss from subsurface drained plot is satisfactory. However, the DRAINMOD-CREAMS model did not simulate surface runoff and sediment loss accurately from non-subsurface drained plot. The CREAMS nutrient submodel was also tested on both plots. The CREAMS model seriously overestimates the nitrogen loss from non-subsurface drained plot. The sensitivity of the DRAINMOD-CREAMS model on erodibility …

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Investigating The Informational Nature Of A Modeled Visual Demonstration., Britta Gertrud Schoenfelder-Zohdi Jan 1992

Investigating The Informational Nature Of A Modeled Visual Demonstration., Britta Gertrud Schoenfelder-Zohdi

LSU Historical Dissertations and Theses

This study investigated the informational nature of a modeled visual demonstration of slalom-ski type movements performed on a ski simulator. Hypotheses exist suggesting that a model may convey information primarily about movement coordination (Newell, 1985), or movement form (Whiting, 1988), but there is no empirical evidence that this information is used by the learner so that skill acquisition is facilitated. To investigate this information question, three experiments were conducted that replicated and extended a study by Whiting, Bijlard, and den Brinker (1987) by analyzing movement kinematics of subjects in addition to movement outcome. In the first experiment, the expert model's …

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