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The Effects Of Curriculum Tracking On Women's Occupational Outcomes: A Test Of The Correspondence Principle., Leroy Allen Furr Jan 1986

The Effects Of Curriculum Tracking On Women's Occupational Outcomes: A Test Of The Correspondence Principle., Leroy Allen Furr

LSU Historical Dissertations and Theses

In recent years, Marxist theories have challenged the traditional, meritocratic perspective dominant in the sociology of education. The meritocracy assumes that schools, like the larger society, are based on the premise of equal opportunity; success in school is the result of hard work and good grades, which lead to good jobs and good incomes. Bowles and Gintis, among other revisionists, disagree arguing that the structure of education, sorting students into segregated, hierarchical curriculum tracks, mirrors the structure of the capitalist workplace and reproduces the existing class system such that the most advantaged persons and groups continue to fare well while …

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Determination Of The Thermal Death Time Of Clostridium Botulinum Type E In Crawfish (Procambarus Clarkii) Tailmeat., Carmen Alicia Oquendo De Pantoja Jan 1986

Determination Of The Thermal Death Time Of Clostridium Botulinum Type E In Crawfish (Procambarus Clarkii) Tailmeat., Carmen Alicia Oquendo De Pantoja

LSU Historical Dissertations and Theses

The thermal death time of Clostridium botulinum type E spores in crawfish tailmeat was determined at temperatures ranging from 80 to 95(DEGREES)C. Crawfish paste containing 10('6) spores per gram was dispensed into 16 x 125 mm test tubes, which were subsequently placed in water baths preset at the test temperatures. Sample tubes were removed from the baths at predetermined time intervals and incubated anaerobically for up to two months. The D value for the spores in crawfish tailmeat was determined from the corrected time of exposure to the heat and survival data using three methods of calculation. D values were …

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The Effect Of Temperature And Humidity Stress On Plasma Progesterone, Luteinizing Hormone And Cortisol Profiles Following Cloprostenol Injection In Cycling Holstein Cows In A Controlled Environment (Environmental Physiology, Reproduction, Prostaglandins)., Anandarajah Sri Kanda Kumar Jan 1986

The Effect Of Temperature And Humidity Stress On Plasma Progesterone, Luteinizing Hormone And Cortisol Profiles Following Cloprostenol Injection In Cycling Holstein Cows In A Controlled Environment (Environmental Physiology, Reproduction, Prostaglandins)., Anandarajah Sri Kanda Kumar

LSU Historical Dissertations and Theses

The effect of heat stress on plasma profiles of progesterone, luteinizing hormone (LH) and cortisol was evaluated following cloprostenol (500 (mu)g) induced luteolysis in lactating and non-lactating cows in a controlled environment. Another experiment was conducted to evaluate the effect of heat stress on the superovulatory response in lactating cows. The plasma progesterone, LH and total estrogen concentrations were not altered by heat stress (P > 0.05) when the average rectal temperatures of both lactating and non-lactating cows were raised to 39.83(DEGREES)C (103.7(DEGREES)F). However, plasma cortisol was significantly suppressed (P < 0.05) during heat stress. Luteolysis was followed by a preovulatory LH surge in all cows following cloprostenol and thus heat stress did not appear to alter the responsiveness of the corpus luteum to cloprostenol and the factors which regulate the hypothalamic control of LH release. Preovulatory LH peaks were preceded by total estrogen peaks and therefore heat stress did not appear to alter the positive feedback of estrogens from the preovulatory follicles to release LH from the pituitary gland. The magnitude of the diurnal variation of cortisol was higher during lower stress. LH peaks were seen irrespective of cortisol concentrations during both higher and lower stress treatments. However, LH peaks coincided with those of cortisol and total estrogens during lower stress treatments in both lactating and non-lactating cows. An altered diurnal variation in rectal temperatures was seen following LH peaks during lower stress. Fifteen transferable embryos were recovered during lower stress (15/34 or 44%) compared to one transferable embryo (1/4 or 25%) during higher stress (P > 0.05) in the superovulation study. Thus it appears that heat stress …

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Late Quaternary Facies And Sea Level History, Southwest Louisiana Continental Shelf., John Robert Suter Jan 1986

Late Quaternary Facies And Sea Level History, Southwest Louisiana Continental Shelf., John Robert Suter

LSU Historical Dissertations and Theses

Abstract Not Available.

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An Electronic Load Compensator For Arc Furnaces (Reactive Current, Static Var Compensator)., Mickey Dale Cox Jan 1986

An Electronic Load Compensator For Arc Furnaces (Reactive Current, Static Var Compensator)., Mickey Dale Cox

LSU Historical Dissertations and Theses

An electronic compensator is described that is capable of compensating the reactive current drawn by arc furnaces and other nonlinear, time-varying loads. Consisting of three independent single-phase pulse-width modulated (PWM) inverters, along with appropriate controller and detector stages, the proposed compensator responds quickly to sudden load changes and compensates the reactive current drawn by the load. Unlike conventional static var compensators, the electronic compensator can also supply the active current demanded by the load if an energy source independent of the utility is available. Simulations are conducted, including the modelling of the furnace current and voltage waveforms during the early …

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Population Dynamics Of The Monogenea (Platyhelminthes) On The Bluegill, Lepomis Macrochirus, In Southern Louisiana., Leon F. Duobinis-Gray Jan 1986

Population Dynamics Of The Monogenea (Platyhelminthes) On The Bluegill, Lepomis Macrochirus, In Southern Louisiana., Leon F. Duobinis-Gray

LSU Historical Dissertations and Theses

Seven species of Monogenea of the subfamily Ancyrocephalinae were collected from 700 Lepomis macrochirus from two eutrophic localities in southern Louisiana. Host specimens were collected monthly from May 1982 through April 1984 from Pat's Bay and Spanish Lake. The relative densities of nonlarval Onchocleidus ferox, Actinocleidus fergusoni, Haplocleidus acer, H. dispar, Anchoradiscus triangularis, Cleidodiscus robustus, and C. nematocirrus were analysed for correlation with water temperature, significant differences in locality, temporal and spatial dynamics, and effect of host sex on population densities. The three more abundant species, O. ferox, A. fergusoni, and H. acer, were warm-water forms, whereas H. dispar and …

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Low Strain Shear Measurements Of Soft Sediments Using Triaxial Vane Device (Triaxial Vane Testing, Soft Clays)., Sibel Pamukcu Jan 1986

Low Strain Shear Measurements Of Soft Sediments Using Triaxial Vane Device (Triaxial Vane Testing, Soft Clays)., Sibel Pamukcu

LSU Historical Dissertations and Theses

A new semi-computer aided testing procedure was designed and implemented to determine low shear strain properties of soft saturated clays. Components of the test set-up were a triaxial vane device, data acquisition units to detect small strain amplitudes, and a microcomputer. Real-time data acquisition and interactive computer graphics were utilized to collect and analyze data. The average range of electronically measured strain amplitude was from 10('-4)% to 1%. Approximately 1500 data points were taken in this range. Testing could be extended to determine undrained shear strength of the specimens, occurring between 10% to 20% of shear strain amplitude, and beyond …

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Sociologists And The Vietnam War: A Historical Document Analysis (Commodification, Post-Industrial)., Robert Earl Sanderson Jan 1986

Sociologists And The Vietnam War: A Historical Document Analysis (Commodification, Post-Industrial)., Robert Earl Sanderson

LSU Historical Dissertations and Theses

Textbooks are important representative statements of certified and legitimated knowledge within an academic discipline, and the manner in which introductory sociology textbooks assess society reflect the power and sophistication of theories in discerning social patterns and structures. That the pivotal historical event of the Vietnam War and its implications for contemporary American social institutions was virtually omitted in our sample of one hundred-twenty textbooks raises critical issues for sociology. Content analysis of Vietnam War era textbooks (1954-1975) revealed 75% of the sample, divided among four major research orienting paradigms extant in sociology, ignored mention of the war and only the …

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Development Of A New Conductivity Model For Shaly Sand Interpretation., Pedro L. Silva Jan 1986

Development Of A New Conductivity Model For Shaly Sand Interpretation., Pedro L. Silva

LSU Historical Dissertations and Theses

In this dissertation, a new theoretical conductivity model for shaly sands is developed. The model is based on dual water concepts. In addition, the equivalent counterion conductivity changes as the diffuse electrical double layer expands and is then a function of temperature, shaliness, and of the conductivity of the far water. The formation resistivity factor used in the model is independent of shaliness. A method to calculate the equivalent counterion conductivity is proposed. This method is based on treating the double layer region as a hypothetical electrolyte, the properties of which are derived from basic electrochemistry theory. The new model …

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A Dynamics And Sedimentology Study Of Eastern Atchafalaya Bay, Louisiana (Cluster Analysis, Estuarine)., Chaoyu Wu Jan 1986

A Dynamics And Sedimentology Study Of Eastern Atchafalaya Bay, Louisiana (Cluster Analysis, Estuarine)., Chaoyu Wu

LSU Historical Dissertations and Theses

A new Mississippi River Delta is building in Atchafalaya Bay of southcentral Louisiana as a result of a upstream natural diversion in river course. The present study focuses on several distinct but complementary aspects of the physical processes of the modern Atchafalaya River Delta. Coherence analysis reveals that the subtidal fluctuations of water stage and current velocity in the estuarine area are closely related to atmospheric forcing at different time scales. The water stage fluctuations at Morgan City had significant variance at time scale 2.5-10 days which was driven by local longitudinal (north-south) winds. There were also fluctuations at periods …

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The Fricative Sound Source Spectrum Derived From A Vocal Tract Analog., Lawrence Edward Zagar Jan 1986

The Fricative Sound Source Spectrum Derived From A Vocal Tract Analog., Lawrence Edward Zagar

LSU Historical Dissertations and Theses

The applications of speech synthesis for computer voice response and speech analysis present the need for highly intelligible and natural synthesized speech. In order to improve the synthesis of fricative and related sounds, the use of simple models for the source spectrum of fricative sounds is investigated. The investigation is based on the use of a vocal tract analog and experimental measurements. Measurements of the sound pressure spectra of fricative consonants are made. Simple sound pressure measurements and measurements based on the technique for measuring intensity are utilized. The fricatives studied are /f/, /th/, /s/, /sh/, and /h/. Fricative sound …

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Computer-Aided Analysis Of Formation Pressure Integrity Tests Used In Oil Well Drilling., Mauricio Aguiar Almeida Jan 1986

Computer-Aided Analysis Of Formation Pressure Integrity Tests Used In Oil Well Drilling., Mauricio Aguiar Almeida

LSU Historical Dissertations and Theses

Formation pressure-integrity tests or leak-off tests have been increasingly performed throughout the world. The test is performed primarily to verify how much pressure can be applied to the formation below the bottom of casing, and to test the cement job sheath around the outside of the casing. The initial design of the various casing strings to be cemented in the well depends heavily on the predicted fracture-pressure curve. If this predicted curve is not verified by the test, the casing plan will have to be changed. Thus, verifying formation fracture-pressure during drilling is of great importance. However, the lack of …

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Fate And Transport Of Low-Ph Hazardous Materials After Deep Well Disposal., Winton G. Aubert Jan 1986

Fate And Transport Of Low-Ph Hazardous Materials After Deep Well Disposal., Winton G. Aubert

LSU Historical Dissertations and Theses

The ultimate fate and chemical kinetics of low-pH hazardous wastes after deep well injection were studied. Two experimental approaches were taken. Chemical kinetics of reactions involving acids and typical formation clays was studied using a batch reaction scheme. The effects of reactions involving flowing acidic waste streams and disposal formations were characterized using sand packs of length one foot, four feet, and twenty feet. A numerical ground water flow simulator was used to model the interactions of flowing acidic wastes with linear sand packs and with a hypothetical waste disposal system. Reaction rate coefficients and activation energies were determined for …

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An Experimental And Theoretical Analysis Of Diverter System Performance., Frederick Eugene Beck Jan 1986

An Experimental And Theoretical Analysis Of Diverter System Performance., Frederick Eugene Beck

LSU Historical Dissertations and Theses

Diverter systems, used as an alternate means of well control while drilling surface hole, have a demonstrated history of failure. Of particular interest in this dissertation are failures related to excessive backpressure, such as mechanical failure of surface equipment or the loss of the rig due to foundation collapse. Critical flow effects, neglected by current design practices, are shown both experimentally and theoretically to have a significant effect on backpressure. Critical flow is modeled by quantifying exit pressures and by including fluid acceleration pressure losses in backpressure calculations. "Systems analysis" of diverter operations is developed and applied to a field …

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The Effects Of Alcohols And Crude Oil Composition On The Performance And Mechanisms Of Alkaline Flooding Of Oil Reservoirs., Mohamed Amine Dahmani Jan 1986

The Effects Of Alcohols And Crude Oil Composition On The Performance And Mechanisms Of Alkaline Flooding Of Oil Reservoirs., Mohamed Amine Dahmani

LSU Historical Dissertations and Theses

Alkaline flooding for enhanced oil recovery was investigated and methods were developed to increase the efficiency and predictability of the process. The problems associated with current alkaline flooding technology were addressed in three ways. The effect of alcohol additives on alkaline flooding was studied since alcohols have benefited related surfactant procedures. Crude oil composition was correlated with flood behavior to provide better predictions of alkaline flood performance. Finally, alkaline flood recovery efficiencies of oxidized crudes were measured to determine the benefits of in-situ air oxidation. The alkaline flooding process was studied through the use of interfacial tension measurements, microscopic examination …

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Estimation Of Nonlinear Frontier Functions And Efficiency Measurements For Airframe Production Programs., Banani Dhar Jan 1986

Estimation Of Nonlinear Frontier Functions And Efficiency Measurements For Airframe Production Programs., Banani Dhar

LSU Historical Dissertations and Theses

This research examines measures of economic efficiency in aircraft production. In particular, a type of nonlinear frontier estimation is contrasted with more traditional methods for estimating a dynamic cost function. This cost function is grounded in economic theory, and it is consistent with our knowledge of the aircraft production process. The model includes the effects of both learning and production rate on total program costs. Our model differs from more traditional cost specifications in that we make no attempt to measure production rate. Our model links direct labor requirements to fixed delivery schedules, under the assumption that the firm attempts …

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Mud Deposition At The Shoreface: Wave And Sediment Dynamics On The Chenier Plain Of Louisiana., George Paul Kemp Jan 1986

Mud Deposition At The Shoreface: Wave And Sediment Dynamics On The Chenier Plain Of Louisiana., George Paul Kemp

LSU Historical Dissertations and Theses

Sedimentological data, and high-resolution current velocity time-series were acquired nearshore along the muddy coast of Louisiana's chenier plain. Results suggest that the 2 to 10 cm thick, laminated and graded silt/shell + mud beds which characterize shoreface mudflat sedimentation form through intermittent dumping of fluid mud suspensions. Cohesive and non-cohesive sediments are first separated and concentrated by shear within a wave boundary layer (WBL). Rapid sedimentation, or "freezing", of the mud fraction occurs when the yield strength of the fluid mud suspension equals that of the WBL shear stress. Incident waves were well described by shallow water linear wave theory, …

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Mechanisms Of The Atmospheric Corrosion Of Weathering Steel., Mehmet Baha Kuban Jan 1986

Mechanisms Of The Atmospheric Corrosion Of Weathering Steel., Mehmet Baha Kuban

LSU Historical Dissertations and Theses

The atmospheric corrosion mechanisms of weathering steel have been investigated through the use of both field and laboratory techniques. Laboratory techniques included time-transformation studies of the oxide-hydroxides (gamma)-FeOOH and (beta)-FeOOH under controlled temperature conditions in air and in vaccum, as well as electrochemical testing for the characterization of the dissolution and film formation kinetics. Potentiostatic tests with set potentials in the immediate vicinity of the open circuit potential of the weathering steel were found to simulate very well the conditions of atmospheric exposure. 0.1% NaCl solutions as well as other concentrations were generally used for comparison purposes. The specific adsorption …

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Effects Of Straw Residues On Soil Erosion (Rainfall)., Keith Carvis Mcgregor Jan 1986

Effects Of Straw Residues On Soil Erosion (Rainfall)., Keith Carvis Mcgregor

LSU Historical Dissertations and Theses

The objectives of this study were to determine the effects on interrill erosion and runoff of: (1) various rates of surface straw, (2) various rates of incorporated straw, and (3) various rates of incorporated straw over two levels of surface straw. A randomized block design, a completely randomized block design and a 4 x 2 factorial using a randomized block design was used for objectives 1, 2 and 3, respectively. Grenada silt loam soil was placed in a 0.91 by 0.91-m soil pan with a central 0.46 by 0.46-m test area. The soil pan was on 2.5% slope. Simulated rainfall …

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The Rhetoric Of Lee Iacocca: The Man, The Myth, The Message (Michigan)., Jayne Margaret Megginson Jan 1986

The Rhetoric Of Lee Iacocca: The Man, The Myth, The Message (Michigan)., Jayne Margaret Megginson

LSU Historical Dissertations and Theses

The purpose of this study was to analyze the rhetoric of Lee A. Iacocca as expressed in the thoughts and actions of the man; to explore rhetorical aspects of his popular myth-hero qualities; and to examine the rhetorical strategies Iacocca used in presenting his message. Criteria for the study were based on the rhetorical theories of Ernest Bormann, Lloyd Bitzer, and Kenneth Burke, with an emphasis on two of Aristotle's canons. In addition, the pattern for the myth-hero as presented by Joseph Campbell was a guide. These concepts blended into an interrelationship which helped illuminate the dimensions of Iacocca's rhetorical …

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Olfactometric In Situ Soil Exploration: Development Of The Electro-Odo-Cone., Mohammad Mohammadi Jan 1986

Olfactometric In Situ Soil Exploration: Development Of The Electro-Odo-Cone., Mohammad Mohammadi

LSU Historical Dissertations and Theses

The suitability of the electro-odo-cell (EOC) for detection of organic chemical contaminants in ambient air and soil strata was investigated under laboratory conditions. The existing concept of the EOC was modified to incorporate the system into a state of the art subsurface soil investigation probe (electric cone penetrometer). Partial theoretical support for EOC operation was developed. The state of the art in reactive solute transport in soils was reviewed. From this review inferences were made about time of travel of a permeant in soil samples, which was consequently compared with time of initial response of the laboratory prototype cone penetrometer …

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Louisiana Agriculture Magazine, Winter 1986-1987, Lsu Agricultural Experiment Station Jan 1986

Louisiana Agriculture Magazine, Winter 1986-1987, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Amine Removal From Aqueous Process Streams By Ligand Exchange., Wayne Bernard Bolden Jan 1986

Amine Removal From Aqueous Process Streams By Ligand Exchange., Wayne Bernard Bolden

LSU Historical Dissertations and Theses

Amines in aqueous, process feed or effluent streams can cause contamination problems. Ligand exchange demonstrates the potential to remove amines from these process streams. In ligand exchange, a complexing solute is removed from solution as it covalently bonds to a metal ion held on cation exchange resin. Previous work has shown copper(II)-carboxylic acid resin to be a suitable metal-resin exchange sorbent. The results of a research program are presented showing the applicability of ligand exchange to an amine removal operation. This study includes experimental determination of equilibrium relationships and diffusion coefficients. These parameters have been used to mathematically model ligand …

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Model Reduction Of Stochastic And Deterministic Continuous Time Linear Systems (Lypunov Equation, Schawrz Approximation)., Khier Benmahammed Jan 1986

Model Reduction Of Stochastic And Deterministic Continuous Time Linear Systems (Lypunov Equation, Schawrz Approximation)., Khier Benmahammed

LSU Historical Dissertations and Theses

Two new approaches for reducing the order of large scale continuous systems are presented. The first approach is a modified version of the aggregation technique. It uses the matching properties of the steady state output covariance and the Markov parameters of the high order system to those of the r('th) order model. This approach also uses a new algorithm derived for the computation of the controllability and observability Grammians, to produce controllable, observable and stable low order models. These is no unique method available for evaluating the aggregation matrix or the matrix relating the system state vector to the model …

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Contribution To Power System Harmonic Analysis., Yahia Baghzouz Jan 1986

Contribution To Power System Harmonic Analysis., Yahia Baghzouz

LSU Historical Dissertations and Theses

In recent years, power system harmonic levels have increased significantly due to the ever-increasing use of nonlinear loads which primarily consist of power electronic devices. The effect of these harmonics on power system components represents a serious problem to utility companies and consumers. A survey of power system harmonics as generated mainly by static ac/dc power converters is presented. Aspects concerning harmonic injection, their effects on system components and harmonic reduction techniques are included. Harmonic analysis methodologies are discussed and compared in terms of efficiency and accuracy. The need of a stochastic treatment of harmonic voltages and currents is clearly …

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Louisiana Agriculture Magazine, Spring 1985, Lsu Agricultural Experiment Station Apr 1985

Louisiana Agriculture Magazine, Spring 1985, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Distributional Analysis For Discontinuous Fields, R. Estrada, R. P. Kanwal Feb 1985

Distributional Analysis For Discontinuous Fields, R. Estrada, R. P. Kanwal

Faculty Publications

The jump conditions that hold across singular surfaces for the fields having step function discontinuities do not, in general, apply if these surfaces themselves carry concentrated fields. In this note, the general situation when the surfaces of discontinuity carry multilayers and deform as they propagate is discussed. Formulas are presented for the first and second derivatives for these multilayers. © 1985.

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Secondary Memory Functioning In Good And Poor Readers (Interference)., Elizabeth B. Williford Jan 1985

Secondary Memory Functioning In Good And Poor Readers (Interference)., Elizabeth B. Williford

LSU Historical Dissertations and Theses

This research compared the short-term memory deficit and the verbal ability deficiency theories of reading disability by examining reaction time performance of good readers and inferior readers in both primary and secondary memory tasks, using a combination of the Sternberg memory scanning paradigm and the Brown-Peterson distractor tasks. One hundred ninety-two Louisiana State University students from the psychology and remedial reading departments were randomly assigned to one of eight experimental groups. Subjects received test material of either four or two item memory sets. The 48 test trials consisted of three trials from each of 16 different categories, with trials grouped …

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Role Of The United States Agricultural Teacher Education Profession In International Agriculture And Rural Development., Ismail Bin Yahya Jan 1985

Role Of The United States Agricultural Teacher Education Profession In International Agriculture And Rural Development., Ismail Bin Yahya

LSU Historical Dissertations and Theses

Purpose. The primary goal of this study was to answer the question: What has been the contribution of the United States agricultural teacher education profession to the international development process? The study, therefore, was a synthesis of past involvement of agricultural teacher educators in international agriculture and rural improvement activities since 1950. Population. The population of this study consisted of 117 agricultural teacher educators in the United States with at least .51 FTE responsibilities in teacher education programs and experience in international development acitivites abroad. Objectives. Eight specific objectives of the study were the identification of (1) primary goals of …

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Large Strain Theory As Applied To Penetration Mechanism In Soils (Plasticity)., Panagiotis Demetrios Kiousis Jan 1985

Large Strain Theory As Applied To Penetration Mechanism In Soils (Plasticity)., Panagiotis Demetrios Kiousis

LSU Historical Dissertations and Theses

A theoretical analysis of a Quasistatic Cone Penetrometer Test (QCPT) is presented in this work. A large strain, elasto-plastic formulation is developed for this purpose and is implemented into a finite element method program. The basic relations of the theory are developed in an Eulerian reference frame, subsequently transformed to a Lagrangian coordinate system, and through simple time differentiation, the necessary rate equations are derived. Both isotropic and kinematic hardening of the Ziegler type are introduced in this theory. The plasticity models implemented are the extended von Mises and the cap model by DiMaggio and Sandler. The pore water pressures …

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