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Ordered Sets With No Infinite Antichains, J. D. Lawson, M. Mislove, H. Priestley Jan 1987

Ordered Sets With No Infinite Antichains, J. D. Lawson, M. Mislove, H. Priestley

Faculty Publications

No abstract provided.

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On Weakly Symmetric Graphs Of Order Twice A Prime, Ying Cheng, James Oxley Jan 1987

On Weakly Symmetric Graphs Of Order Twice A Prime, Ying Cheng, James Oxley

Faculty Publications

A graph is weakly symmetric if its automorphism group is both vertex-transitive and edge-transitive. In 1971, Chao characterized all weakly symmetric graphs of prime order and showed that such graphs are also transitive on directed edges. In this paper we determine all weakly symmetric graphs of order twice a prime and show that these graphs too are directed-edge transitive. © 1987.

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Some Results In Discontinuous Fields And Wave Propogation, R. Estrada, R. P. Kanwal Jan 1987

Some Results In Discontinuous Fields And Wave Propogation, R. Estrada, R. P. Kanwal

Faculty Publications

We present various applications of recently developed techniques which are an interplay between the differential geometry and the theory of distributions. We apply them to the microlocal theory, derive the general order transport equations for the strength of wave fronts, obtain the values of the jumps of the general Nth-order derivatives of the harmonic functions across the potential layers, and present the explicit formulas for an arbitrary order derivative of functions of the radial distance r. © 1987.

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Continuous Pythagoras Numbers For Rational Quadratic Forms, Charles N. Delzell Jan 1987

Continuous Pythagoras Numbers For Rational Quadratic Forms, Charles N. Delzell

Faculty Publications

We introduce the concept of the continuous Pythagoras number Pc(S) of a subset S of a commutative topological ring to be, roughly, the least number m ≤ ∞ such that the set of sums of squares of elements of S can be represented as sums of m squares of elements of S, by means of m continuous functions. Heilbronn had already shown that Pc(Q) = 4. Letting Ln(F) be the set of linear n-ary forms over the field F, we show that Pc(Ln(R)) = n. We then allow continuously varying nonnegative rational "weights" on the m square summands. If these …

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The Danish Cadastral Survey Of St. Croix, 1733-1754 (Virgin Islands)., Daniel Price Hopkins Jan 1987

The Danish Cadastral Survey Of St. Croix, 1733-1754 (Virgin Islands)., Daniel Price Hopkins

LSU Historical Dissertations and Theses

This dissertation presents the history of the original cadastral survey of St. Croix by the Danish West India and Guinea Company in the early eighteenth century. St. Croix, the largest of the United States Virgin Islands, is distinguished by a remarkably regular and rectangular pattern of roads and properties, which appears to have had no parallel in the Lesser Antilles or Denmark. This is a case study of how colonial administrators approached the problem of the orderly alienation and demarcation of previously undivided land. The study is based mainly on original manuscript Company records in the Danish State Archive in …

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Effects Of Interaction Between Red Rice And Two Rice Cultivars On Morphological, Physiological And Ecological Characteristics., Jairo Clavijo Jan 1987

Effects Of Interaction Between Red Rice And Two Rice Cultivars On Morphological, Physiological And Ecological Characteristics., Jairo Clavijo

LSU Historical Dissertations and Theses

Germination, emergence, and early seedling development patterns were analyzed for red rice (Oryza sativa L.) and the rice (Oryza sativa L.) cultivars Mars, Saturn, Lemont and Bellemont. Red rice had the highest germination percentage, fastest emergence rate, and earliest development of both shoots and roots. These results suggest that the competitive ability of red rice is based on these characteristics which enable it to preempt more resources at early stages of stand development. Interaction between red rice and Lemont or Mars was evaluated by comparing morphological and physiological characteristics of these plants when grown in pure stands and in 50:50 …

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The Testing Of A Job Performance Model For Retail Salespeople., Robert Paul Bush Jan 1987

The Testing Of A Job Performance Model For Retail Salespeople., Robert Paul Bush

LSU Historical Dissertations and Theses

Over the years, researchers have devoted significant efforts towards conceptualizing and empirically investigating all facets of the work process. In order to better understand this issue at the retail level, a major question was addressed, that is, what are the aspects relating to performance of retail salespeople. Previous approaches to explain the performance behavior of salespeople have primarily been centered in the industrial sales area. The development and testing of empirical research designs directed toward retail salespeople remained a neglected topic in the marketing literature. The primary goal of this research was to derive a framework for the explanation of …

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The Rational Overhauser: An Interpolating Rational Cubic Curve., Jeffrey Neil Jortner Jan 1987

The Rational Overhauser: An Interpolating Rational Cubic Curve., Jeffrey Neil Jortner

LSU Historical Dissertations and Theses

A rational interpolating cubic curve which implicitly maintains first order geometric continuity in splines has been developed. The curve is formed by blending two rational quadratic curves. Since the blending method used was originally introduced by Overhauser, this curve is referred to as the Rational Overhauser (Rover) curve. The curve formulation utilizes four shape factors to provide control of the curve. A geometrical and analytical interpretation of these shape factors and their relationship to each other is discussed. Procedures for representing conic sections using the rational Overhauser curve are presented. Also included are techniques for mapping between the Rover curve …

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Abstract Wiener Space Approach To Hida Calculus (Brownian Motion)., Youngsook Lee Shim Jan 1987

Abstract Wiener Space Approach To Hida Calculus (Brownian Motion)., Youngsook Lee Shim

LSU Historical Dissertations and Theses

Let $\cal S$ be the Schwartz space of rapidly decreasing real functions on ${\rm I\!R.}$ The dual space ${\cal S}\sp\ast$ of $\cal S$ consists of tempered distributions. The inclusion maps ${\cal S}\subset{\rm L\sp2(I\!R)}\subset{\cal S}\sp\ast$ are continuous. Hida's theory of Brownian and generalized Brownian functionals is the study of functionals defined on ${\cal S}\sp\ast.$ In this dissertation, the triple ${\cal S}\subset{\rm L\sp2(I\!R)}\subset{\cal S}\sp\ast$ is replaced by an abstract Wiener space ${\rm B}\sp\ast$ $\subset$ H $\subset$ B and an abstract version of Hida's theory is developed. The Gaussian measure on ${\cal S}\sp\ast$ in Hida's calculus is replaced by the standard Gaussian measure …

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An Evaluation Of The Applicability Of Nonlinear Programming Algorithms To A Typical Commercial Process Flowsheeting Simulator. (Volumes I And Ii)., Michael Joseph Richard Jan 1987

An Evaluation Of The Applicability Of Nonlinear Programming Algorithms To A Typical Commercial Process Flowsheeting Simulator. (Volumes I And Ii)., Michael Joseph Richard

LSU Historical Dissertations and Theses

An efficient methodology for using commercial flowsheeting programs with advanced mathematical programming algorithms has been developed for the optimization of operating plants. The methodology was demonstrated and validated using ChemShare Corporation's DESIGN/2000 simulation of the Freeport Chemical Company's plant for sulfuric acid manufacture and three nonlinear programming techniques; successive linear programming, successive quadratic programming and the generalized reduced gradient method. The application of this methodology begins with the development of a feasible base case simulation. Partial derivatives of the economic model and constraint equations are computed using fully converged simulations. This information is used to formulate an optimization problem which …

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An Investigation Of The Inference And Mapping Components Of The Componential Theory Of Analogical Reasoning., Catherine Sheard Jan 1987

An Investigation Of The Inference And Mapping Components Of The Componential Theory Of Analogical Reasoning., Catherine Sheard

LSU Historical Dissertations and Theses

Sternberg's componential theory of analogical reasoning (1977) provides a series of steps that may be followed in order to solve analogies. According to Sternberg, when given a simple analogy (in the form A:B::C: (D$\sb1$, D$\sb2$, D$\sb3$)) the reasoner: (a) encodes the terms of the analogy, (b) infers the relation between A and B, (c) maps the relation between A and C, (d) applies a relation analogous to the inferred one from C to each answer option, choosing the closer option, and (e) responds. The purpose of this research was to further investigate the inference and mapping processes of the componential …

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Insulin Receptors Of Erythrocytes And Liver Membranes In Dogs., Karen Johnson Wolfsheimer Jan 1987

Insulin Receptors Of Erythrocytes And Liver Membranes In Dogs., Karen Johnson Wolfsheimer

LSU Historical Dissertations and Theses

Insulin receptor assays using canine liver membranes and erythrocytes were validated for use in evaluating insulin receptor binding parameters within a healthy population of dogs. Association, dissociation, saturability and specificity were demonstrated for insulin receptors of canine liver membranes and erythrocytes. Assay precision was evaluated by measuring interassay coefficient of variation (liver membrane = 25.0%; erythrocytes = 9.3%). Because the number of high-affinity receptor sites and high-affinity K$\sb{\rm D}$ were determined using physiological concentrations of insulin, they were considered to be more physiologically important than the total number of receptor sites, low-affinity K$\sb{\rm D}$ and Ke, which were derived using …

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Estimation Of Direct And Maternal Additive And Heterotic Genetic Effects For Preweaning Traits In Beef Cattle., Chi Lawrence Tawah Jan 1987

Estimation Of Direct And Maternal Additive And Heterotic Genetic Effects For Preweaning Traits In Beef Cattle., Chi Lawrence Tawah

LSU Historical Dissertations and Theses

Progency records from 4 generations of a rotational crossbreeding experiment were fitted to a regression equation to obtain estimates of direct and maternal additive (Ig, Mg) and heterotic (Ih, Mh) genetic effects of preweaning traits for Angus (A), Brahman (B), Charolais (C), Hereford (H) breeds and their combinations. These estimates were fitted to prediction equations to compare preweaning performance of breed groups under different mating systems. Heterosis estimates were used to compute expected heterosis for each rotational cross. The C had the largest Ig estimate for BWT (5.2 kg), ADG (.074 kg/d) and WWT (22.1 kg) while H had the …

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Acceptability And Effectiveness Of Group Contingencies For Improving Spelling Achievement., Timothy Lawrence Turco Jan 1987

Acceptability And Effectiveness Of Group Contingencies For Improving Spelling Achievement., Timothy Lawrence Turco

LSU Historical Dissertations and Theses

This 12-week study conceptually merged cooperative learning and group contingency approaches to classroom interventions to assess how varying task and incentive structures affect fifth-grade students' spelling achievement, social status, and perceptions of treatment procedures. The study used two groups (treatment and control group) of fifth-grade students. The students in the treatment group were actively involved with one of six group contingency procedures designed to improve spelling performances. The conditions for students in the treatment groups varied on dimensions of task structure (group or individual) and incentive structure (interdependent, dependent, or no incentive). Treatment acceptability, spelling achievement, and peer nominated social …

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The Relationship Between Supervisory Methods And Teacher Self-Concept As A Teacher And As A Person., Annis Dowden Tarver Jan 1987

The Relationship Between Supervisory Methods And Teacher Self-Concept As A Teacher And As A Person., Annis Dowden Tarver

LSU Historical Dissertations and Theses

This study was designed to test the relationship between methods of supervision used during the supervisory conference and teacher self-concept as a teacher and as a person. The method of supervision, the independent variable in the research design, was either clinical supervision using the Hunter (1980) method or traditional supervision. The clinical method of supervision used specific, diagnostic, and prescriptive feedback given by the supervisor during a series of supervisory conferences that followed the five types of supervisory conferences proposed by Hunter. The traditional method of supervision used general and non-specific feedback given by the supervisor during a series of …

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A Supply Response Model For Rice And Soybeans In The Mississippi Delta., David Leon Hoppenstedt Jan 1987

A Supply Response Model For Rice And Soybeans In The Mississippi Delta., David Leon Hoppenstedt

LSU Historical Dissertations and Theses

This study examines the economic sources of variation in the supply of rice and soybeans in the Mississippi Delta. As farmers alter their land allocations to various crops, they cause fluctuations in the supply of agricultural products. Traditional theory posits that acreage planted is a function of lagged prices, but does not explicitly recognize some technological constraints. One prevalent technological constraint is that the monocropping of particular crops results in a significant decrease in land productivity. The model in this study attempts to improve the specification of the technological constraint of declining soil productivity due to monocropping. Two different statistical …

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Modeling The Uptake Of Sulfur By Cotton, Soybean, And Wheat In Three Alluvial Soils Of Louisiana., Jorge Ariel Delgado Jan 1987

Modeling The Uptake Of Sulfur By Cotton, Soybean, And Wheat In Three Alluvial Soils Of Louisiana., Jorge Ariel Delgado

LSU Historical Dissertations and Theses

The Barber and Cushman (1981) mechanistic model of element uptake by plants was used to help elucidate the mechanisms that govern the movement of S in soils and S uptake by plants. Sulfur uptake predicted by the model was compared to measured S uptake by 'Stoneville 825' cotton (Gossypium hirsutum L.), 'Centenial' soybean (Glycine max L. Merr.), and 'Coker 916' wheat (Triticum aestivum L.) grown on Gallion very fine sandy loam (Typic Hapludalf), Mhoon silty clay loam (Typic Fluvaquent), and Norwood silt loam (Typic Udifluvent) under glasshouse conditions. Predicted S uptake by the model was significantly correlated with observed uptake. …

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Borehole Friction Assessment And Application To Oilfield Casing Design In Directional Wells., Eric Edgar Maidla Jan 1987

Borehole Friction Assessment And Application To Oilfield Casing Design In Directional Wells., Eric Edgar Maidla

LSU Historical Dissertations and Theses

The phenomenon of mechanical friction in the oil well borehole was investigated. Immediate application of such a study is to improve casing design in directional wells. An additional application is the prediction of reciprocating loads in directional wells for cementing purposes, that is recognized to be an effective method to avoid cement channeling through efficient mud displacement. Field studies on the borehole friction coefficient revealed its insensitivity to depth, various well trajectories, size of pipe and its surface configuration, leading to the conclusion that one value of the borehole friction factor can represent a single well. Also there was good …

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Group Actions On Minimal Functions Over Finite Fields., Francisco Rivero Jan 1987

Group Actions On Minimal Functions Over Finite Fields., Francisco Rivero

LSU Historical Dissertations and Theses

This work deals with the Fourier transform over finite fields. A notion of minimal function for the Fourier transform is defined. The minimal functions are shown to be a generalization of the famous Legendre symbol $\Psi$. The minimal functions are studied here in terms of group actions, allowing both upper and lower estimates on the size of the set of all minimal functions. These estimates are sufficient to settle a conjecture of O. C. McGehee on the number of minimal functions.

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Queueing Networks With Blocking., Horst Hermann Von Brand Jan 1987

Queueing Networks With Blocking., Horst Hermann Von Brand

LSU Historical Dissertations and Theses

The area of classical (product form) queueing networks is briefly discussed. The principal results for classical queueing networks are summarized. The transfer, service and rejection blocking policies are defined, and their use in queueing network models are presented. An overview of the literature in the area of queueing networks with blocking is given, and the relations between the three blocking policies is discussed in general. Duality theorems for open and closed queueing networks with rejection blocking and a single job class are proved. Using a duality theorem, an exact solution is found for closed blocking networks which contain so many …

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An Economic And Statistical Analysis Of Selected Structural Characteristics Of Louisiana Agricultural Sector And Its Impact On Resource Situations., Stephen Leong Jan 1987

An Economic And Statistical Analysis Of Selected Structural Characteristics Of Louisiana Agricultural Sector And Its Impact On Resource Situations., Stephen Leong

LSU Historical Dissertations and Theses

This study focuses on the importance of structural change in the farm sector and its interactive relationship with the nonfarm sector. This relationship was exemplified through an overview and trend analysis of the structural change and resource adjustments that have occurred in the farming areas in Louisiana between 1959 and 1982. Extrapolative forecasting techniques, such as trend extrapolation, Markov Process, negative exponential and age cohort analysis, were used to project changes in farm numbers to the year 2000. The results show declining farm numbers and the continuation of present trends. Large and medium size farms will increase while small and …

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A Comparison Of A Computer Programming Approach To A Textbook Approach In Teaching The Mathematics Concept "Variable" To Sixth Graders., Enrique Ortiz Jan 1987

A Comparison Of A Computer Programming Approach To A Textbook Approach In Teaching The Mathematics Concept "Variable" To Sixth Graders., Enrique Ortiz

LSU Historical Dissertations and Theses

The purpose of this study was to investigate whether there was a significant difference in understanding the concept of variable and in attitudes toward mathematics among sixth-grade students who programmed LOGO graphics, students who used textbook-based activities, and students who received no instruction on the concept of variable. The subjects were 89 sixth-grade students (47 female, 42 male) from two middle schools in the East Baton Rouge Parish School System. The Test of Logical Thinking (TOLT), Robustness Semantic Differential (RSD), and Comprehensive Test of Basic Skills (CTBS) were administered as pre-treatment tests. The study was conducted in two phases, pre-treatment …

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Consumption, Utilization, Biology, And Economic Injury Levels Of Fall Armyworm, Spodoptera Frugiperda (J. E. Smith), On Selected Bermudagrasses., Tasanee Jamjanya Jan 1987

Consumption, Utilization, Biology, And Economic Injury Levels Of Fall Armyworm, Spodoptera Frugiperda (J. E. Smith), On Selected Bermudagrasses., Tasanee Jamjanya

LSU Historical Dissertations and Theses

The effects of nine bermudagrass, Cynodon dactylon (L.) Pers., varieties and strains on the development, survivorship, consumption and utilization, preference, and host suitability of the fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) were determined. The bermudagrasses tested were 'Coastal', 'Tifton 44', 'Tifton 78', 'Tifton 292', 'Grazer', #1 R12P5, 'OSU 71 X 6-7','OSU 74 X 11-2', and 'OSU 74 X 12-1'. 'Tifton 292' was the most preferred grass by neonate larvae, while 'OSU 74 X 11-2' was the least preferred grass. 'Tifton 78' was the most susceptible host, while 'OSU 71 X 6-7' was the least suitable host to FAW …

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An Empirical Investigation Of The Usefulness Of Current Cost Information In Merger Prediction., Robert Kuaterng Su Jan 1987

An Empirical Investigation Of The Usefulness Of Current Cost Information In Merger Prediction., Robert Kuaterng Su

LSU Historical Dissertations and Theses

The usefulness of current cost (CC) information, as compared to historical cost (HC) information, has been a focus of debate over the last decade. Inconsistent research findings concerning this question suggest that additional evidence is needed. Given the intensive merger activity in recent years and the significance of mergers to the economy and shareholders, this study empirically investigated the usefulness of current cost information in merger prediction. Fifty-seven firms that were merged between 1981 and 1984 were selected from the FASB databank, and an equal number of nonmerged firms were matched with the merged firms. Using the subsample for 1981-82, …

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Experimental And Finite Element Study Of Residual Stresses In Zircaloy-4(R) And Ofhc Copper Tubes., Jahangir Rasty Jan 1987

Experimental And Finite Element Study Of Residual Stresses In Zircaloy-4(R) And Ofhc Copper Tubes., Jahangir Rasty

LSU Historical Dissertations and Theses

Non-homogeneous plastic deformation associated with metal-forming operations results in a state of residual stress in the final product. Complete evaluation of the mechanical behavior of the product under operating condition requires a knowledge of these stresses. In order to evaluate the magnitude and distribution of residual stresses, existing experimental techniques are complemented by computer-aided simulation of the forming process using elastic-plastic finite element method (FEM). It is found the FEM can be effectively utilized to simulate metal-forming operations in order to determine the combination of process variables which optimizes the residual stress distribution in the final product. In the experimental …

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Stability And Stabilization Of The Wave Model., Masoud Shafiee Jan 1987

Stability And Stabilization Of The Wave Model., Masoud Shafiee

LSU Historical Dissertations and Theses

The stability properties of 2-D systems are an important aspect of the design of acoustic, seismic, image and sonar signal processors. This research utilizes the Wave model format to transport 1-D stability techniques to the 2-D setting. The research studies stability through multistep growth bounds on the Wave state. The use of Lyapunov theory is also considered. The research considers also the problem of stabilizing a 2-D system using state and/or output information feedback to interior and/or boundary controls. Finally the problem of observer design for 2-D systems is considered, with the new stability criteria being used to assure observer/system …

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Louisiana Agriculture Magazine, Fall 1986, Lsu Agricultural Experiment Station Oct 1986

Louisiana Agriculture Magazine, Fall 1986, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Faculty Senate Resolution 85-11, Louisiana State University And Agricultural & Mechanical College Jul 1986

Faculty Senate Resolution 85-11, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution on general education criteria, adopted on July 23, 1986.

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Scs 98: Z-Continuity, Z-Hypercompactness And Complete Distributivity, Marcel Erné Jun 1986

Scs 98: Z-Continuity, Z-Hypercompactness And Complete Distributivity, Marcel Erné

Seminar on Continuity in Semilattices

Source: University archive of the Technische Universität Darmstadt.

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Apparent Thermal Diffusivity Of Soil Determined By Analysis Of Diurnal Temperatures (Fourier Series, Nonlinear Regression)., Thomas Anthony Costello Jan 1986

Apparent Thermal Diffusivity Of Soil Determined By Analysis Of Diurnal Temperatures (Fourier Series, Nonlinear Regression)., Thomas Anthony Costello

LSU Historical Dissertations and Theses

A method of indirect measurement of the apparent thermal diffusivity of soil, in situ, was developed, tested, and evaluated. The method was based on an analysis of diurnal variations in soil temperature measured at several depths near the surface of an undisturbed mineral soil (a silty clay loam), near Baton Rouge, Louisiana. A thermocouple insertion technique was developed and implemented to precisely locate the sensors in undisturbed soil, thereby reducing experimental error in soil temperature measurement. The apparent thermal diffusivity was determined from an implicit relationship derived from transient one dimensional heat conduction theory. Nonlinear regression analysis was used to …

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