Digital Commons Network^™

Computer Analysis Of Coastal Ocean Features In Synthetic Aperture Radar Imagery (Japan, Gotoh Islands)., Gary Arthur Mastin

LSU Historical Dissertations and Theses

A wide variety of oceanographic phenomena is revealed in synthetic aperture radar (SAR) ocean imagery. Four basic classes of SAR oceanographic phenomena, surface waves, fronts, wind patterns and internal waves, are of oceanographic interest. These classes are defined in light of their generation mechanisms and as a function of Bragg scattering, which accounts for their visualization in SAR ocean imagery. Digital exploitation of SAR imagery offers image enhancement and parameter extraction capabilities and is currently an area of extensive research. The state of the art in digital exploitation of SAR imagery is reviewed, with special attention to SAR speckle reduction …

The Social Strategy Implementation Process: An Exploratory Investigation., Jean Garner Stead

LSU Historical Dissertations and Theses

The ability to formulate and implement social strategies has become increasingly important as a means for firms to manage the socio-political elements in their environments. This dissertation is an exploratory study designed to examine the internal process of corporate social strategy implementation. Specifically, the study is an in-depth, one-firm research case analysis of the implementation process in an organically structured organization. The literature is in agreement that in today's turbulent socio-political environment it is necessary for a firm to formulate and implement effective social strategies. Yet, only two previous studies (Ackerman and Murray) have examined the process of implementing social …

The Effect Of Feedback Frequency On Performance In Applied Behavior Analysis: A Field Study., Jagdeep Singh Chhokar

LSU Historical Dissertations and Theses

Occupational safety continues to be a major social concern in spite of the attention which it has received over the years. While unsafe acts and behaviors have been major contributors to accidents, the attention paid to increasing safety by changing human behavior has only been sporadic. This study used an applied behavior analysis package of training, goal setting, and feedback as a behavioral approach to improving safety in an industrial setting. In addition, the effects of changing the frequency of feedback on safe behavior performance were investigated. All the employees in a plant engaged in the manufacture and repair of …

The Effect Of Alternative Buffering Techniques To Protect A Multi-Product, Multi-Stage Production Inventory System Against Supply-Uncertainty., Mohamed-T. Aly Mady

LSU Historical Dissertations and Theses

This research has been an experimental investigation of some of the operational aspects of a hypothetical multiproduct, multistage production inventory system operating in a supply uncertainty environment. The main objective of this study was to explore the relative effect of different multilevel buffering strategies on system performance in order to establish some guidelines for choosing among different buffering techniques when buffering the system against different conditions of supply uncertainty. Several performance criteria, including holding cost, inventory cost, total cost, number of shortages, number of stockouts, service level and buffering cost effectiveness, were used to evaluate system performance. The independent variables …

Studies On The Selective Oxidation Activity Of Iron-Tellurium-Oxide Catalysts., Yan-Nian Shyr

LSU Historical Dissertations and Theses

The selective oxidation of 1-butene to 1,3-butadiene and propylene to acrolein are important industrial processes. One of the critical factors which determines the feasibility of these processes is selectivity. Since iron oxide has shown potential as a component of a selective mixed oxide catalyst, and tellurium has been used as a promoter for selective oxidation catalysts, this study focusing on the development and investigation of an iron-tellurium mixed oxide catalyst for the selective oxidation of propylene and 1-butene has been undertaken. The study includes kinetic and mechanistic investigations, and simultaneous activity/selectivity and spectroscopic measurements for iron-tellurium catalysts have been developed. …

Effects Of Storage Method On Losses And Quality Changes In Round Bales Of Ryegrass And Alfalfa Hay, Billy D. Nelson

LSU Agricultural Experiment Station Reports

No abstract provided.

Theoretical Settling Time For Suspended Sediment In Flooded Rice Fields, R J. Edling

LSU Agricultural Experiment Station Reports

No abstract provided.

Xps Characterization Of Supported Iron/Ruthenium Carbon Monoxide Hydrogenation Catalyst Systems., Jeffry T. Donner

LSU Historical Dissertations and Theses

Literature in the field of catalysis is dominated by details of catalytic reactions, operating conditions, and product streams, with little regard for detailed physical characterization of the catalyst materials. It is now understood that knowledge of catalyst properties as a function of reaction properties may lead to the design of more active and/or selective catalysts. Thus, studies in the catalysis field are changing and the present investigation demonstrates the utility of an X-ray photelectron spectroscopic (XPS) characterization of supported iron, ruthenium, and iron-ruthenium bimetallic catalyst systems as a function of catalyst treatment(s). This physical and chemical information of the catalysts …

A Morphological And Paleoecological Analysis Of The Archaeoceti Of Montgomery Landing, Louisiana, Winston Churchill Lancaster

LSU Historical Dissertations and Theses

This study is a paleoecological and functional morphological analysis of the Archaeoceti based on a specimen of Basilosaurus cetoides. The specimen, Louisiana State University Museum of Geoscience Vl, was collected at Montgomery Landing, Grant Parish, Louisiana from the upper Eocene Yazoo Clay (Jackson Group). The specimen consists of the skull, mandibles, cervical vertebrae, upper thoracic vertebrae, ribs and forelimbs.

The skull of LSUMG Vl has an interparietal bone, pterygoid bones which form a pterygoid fossa, and a well developed falciform process of the squamosal which is in contact with the pterygoid bone. The auditory ossicles of B. cetoides are similar …

The Courtyard And Patio Gardens Of The Vieux Carre (1861-1982), Stephen Burdick Hand

LSU Historical Dissertations and Theses

The evolutionary process of the gardens of New Orleans' Vieux Carre from 1861 to 1982 has been influenced by cultural, economic, governmental and social forces within and without the Vieux Carre. Their interworkings combined to shape and style these gardens. No single force or era is seen as clearly dominant in this perceived pattern of evolution. Rather, in this study these gardens are viewed as reflections of various times and, more specifically, the culture, economics, politics and social aspirations of such times. The tracing of the history of these gardens reveals that during the past 122 years they have continually …

Louisiana Agriculture Magazine, Summer 1982, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

Analysis Of The Instability Of Laminar, Newtonian Liquid Jets In Air., Warren Thorne Abbott

LSU Historical Dissertations and Theses

This dissertation results from an investigation into the instability of free jets of a Newtonian liquid (water) in air which are produced from long nozzles and have initially parabolic velocity profiles. This work includes an experimental investigation into both the jet length and the drop formation of such jets. This work also includes a numerical solution of the momentum equations in cylindrical coordinates. From the experimental work, a modification to existing theoretical equations has been made to account for the existance of local maxima in the length of laminar jets as their velocity is increased. An addition to the modification …

The Reaction Between Calcium Oxide And Nitrogen Dioxide In The Presence Of Oxygen: A Variable Solid Property Grain Model., Kenneth Charles Reibert

LSU Historical Dissertations and Theses

The effect of variable solid properties on the kinetics of the reaction of spherical calcium oxide pellets with nitrogen dioxide (in the presence of excess oxygen) was studied. Experimental kinetic data was collected on a thermogravimetric analyzer, which measured weight change in a single pellet during reaction as a function of time. Reactions were carried out at temperatures of 150(DEGREES) to 550(DEGREES)C for gas streams containing 0.5 to 1.8 mole percent nitrogen dioxide and 8.7 mole percent oxygen. No reaction occurred at 600(DEGREES)C. At 150(DEGREES) and 250(DEGREES)C the conversion was found to proceed at a slow but steady rate with …

Solubility Studies In Pure And Mixed Solvents (Pyridine, Thiophene, Benzene, Cyclohexane)., Peter Byonghyock Choi

LSU Historical Dissertations and Theses

The research presented in this dissertation consists of two parts; part 1 for solubility of aromatic hydrocarbon solids in pure and mixed solvents and part 2 for solubility of pure gases in water at high pressures. In the research of part 1, eight aromatic hydrocarbon solids biphenyl, naphthalene, fluorene, phenanthrene, acenaphthene, fluoranthene, pyrene and o-terphenyl are employed to measure their solubilities in pure solvents pyridine and thiophene and in mixed solvents of benzene and cyclohexane at three different concentrations. Solubilities of phenanthrene, which undergoes a lambda point transition, are predicted by a new solubility equation derived in this research. The …

A Curriculum For Training Extension Professionals In Energy Conservation Education., Daniel Fontenot Jr

LSU Historical Dissertations and Theses

Energy conservation is a relatively new educational program for the Cooperative Extension Service (CES). The shortage of training programs available to CES in energy education makes it difficult to properly prepare agents for energy conservation work. The purpose of this study was to develop a curriculum for in-service training of agents engaged in energy education. The procedure for achieving this purpose was used to identify the following: (1) Fundamental concepts necessary for energy conservation education. (2) Agents' knowledge level of these concepts. (3) Agents' perceived need for these concepts. (4) Agents' training requirements. Through a mail questionnaire selected agents from …

Nonprint Media Production In Secondary Schools., Rebecca N. Lawrence

LSU Historical Dissertations and Theses

The purpose of the study was to determine the current status of nonprint media production in the public secondary schools. A questionnaire was administered to the media specialists/librarians at all Louisiana schools containing grades seven through twelve including schools listed as junior highs containing the sixth grade. A 90.909 percent response rate was achieved. Findings included the following: (1) In the order of occurrence, nonprint media produced in the public secondary schools of Louisiana were: overhead transparencies; cassette and/or reel to reel audio tapes; video tapes, photographic slides and photographic film development; slide/tape programs; computer programs; and 8mm films; (2) …

The Coupling Of Monte Carlo Integration With The Boundary Integral Equation Technique To Solve Poisson Type Equations., Gary Steven Gipson

LSU Historical Dissertations and Theses

The primary topic of this work is a method for dealing with boundary element formulations of nonhomogeneous terms in Poisson type equations. A concise presentation of boundary integral techniques and the corresponding fundamental solutions plays an important role in this development. Using Monte Carlo quadrature theory, an algorithm for the construction of a two-dimensional BEM Poisson equation analyzer is derived. A FORTRAN program based upon this algorithm is presented as a novel device that solves the general Poisson equation in two-dimensional and axisymmetric geometries without domain discretization. In the axisymmetric case, Monte Carlo integration is also used to effectively compute …

Application Of Electroanalytical Techniques To Environmental Thallium Compounds., Linda Katherine Hoeflich

LSU Historical Dissertations and Theses

Because of increasing concern over global pollution by the energy production industry, especially large, centralized utility complexes, the quantitation and speciation of heavy metals have taken on great importance. These metals are emitted with coal fly ash and may be subsequently deposited in natural waters. Complications arise when certain inorganic compounds undergo biomethylation by microbial action in these waters. Therefore, procedures must be developed to analyze and differentiate the mixture of inorganic and organometallic compounds present. This work is a study of the electrochemical properties of inorganic and organothallium compounds. The toxicological significance of thallium compounds is known, and their …

Transient Inelastic Thermal Stresses In A Solid Cylinder With Temperature Dependent Properties., Habib Pour-Mohamadian

LSU Historical Dissertations and Theses

Transient temperature distribution in an infinitely long solid cylinder initially at uniform temperature T(,0), subjected to an axisymmetric thermal boundary condition, (immersed in an infinite medium of zero temperature) has been obtained. The mechanical properties of the material are considered to be temperature dependent. Using the available experimental data, an equation for each mechanical property as a function of temperature is obtained. Then, using a numerical method the corresponding transient and residual thermal stresses in a long solid cooling cylinder subjected to a transient axisymmetric temperature distributions are calculated. The residual stresses obtained indicate the same pattern with good agreement …

Math Attitude In Terms Of Various Factors., Jerry Elizabeth Pinsel

LSU Historical Dissertations and Theses

This study examined the degree to which math attitude relates to the mathematical training, major field of study and career choices of undergraduate males and females. The study took place in the Mathematics Department of Southeastern Louisiana University. Statement of the Problem. The following null hypothesis was tested using the .05 level of significance: no significant degree of relationship exists between math attitude and either the mathematical training, major field of study, or career choices of undergraduate male and female students. Procedure. Students who participated in the study were undergraduate students enrolled in mathematics during the Fall Semester of 1981. …

An Experimental Evaluation Of The Performance Of Lot Size Strategies In A Mrp System Facing Uncertain Demand Environment With Different Operating Conditions., Mohammad E. Raiszadeh

LSU Historical Dissertations and Theses

Most manufacturing organizations may be viewed as multi-stage production-inventory systems in which production of goods proceeds from the acquisition of raw material to the fabrication of final product through a series of production stages. Material requirements planning (MRP) has been introduced as an inventory planning technique for such systems. Different lot sizing models have been used to improve the economic efficiency of MRP systems. The objective of this research was to examine the impact of lot size strategies, degree of demand variability, and degree of component commonality on the performance of MRP systems in a stochastic demand environment. A computer …

Adaptive Feedforward Control Of Wastewater Neutralization., Richard Albert Balhoff

LSU Historical Dissertations and Theses

The purpose of this dissertation is to show the development and testing of an adaptive feedforward control of a wastewater neutralization process. The adaptive controller is compared to a nonlinear proportional-integral-derivative (NPID) controller developed by Shinskey (1970). The process and controllers were simulated digitally. The adaptive controller utilizes two pH probes, a feedforward probe and a feedback probe (this measurement is used in the adaptive gain calculation). The feedback measurement provides the adaptive controller with a form of reset action. Probe noise and lag, valve hysteresis and lag, and dead time were included in the simulation. The process simulated for …

Numerical Gas Dynamics Of Internal And External Flows In Gun Barrels., Oktay Baysal

LSU Historical Dissertations and Theses

A computational combined solution to the internal and external flows in gun barrels is devised. A computer code, IEFLOW, is constructed to carry out all the calculations and present a complete package of tables and graphs of the physical property histories. With the input of the initial conditions at the threshold of the barrel, the internal and external flow fields and the simulation of blast is made possible. The flow inside the barrel, which is unsteady, compressible and one dimensional, is solved by a predictor-corrector technique using the method of characteristics. A two step, explicit, finite difference scheme is used …

The Yongnam-Ro: An Historical Geography Of A Korean Royal Road. (Volumes I And Ii)., Young-Joon Choe

LSU Historical Dissertations and Theses

The Yongnam-ro, the main communication artery between Seoul and Pusan, was the shortest and the most important route running through the central part of southern Korea. This road evolved as a military campaign route in ancient times and finally as an administrative communication artery in the Yi Dynasty. Although spanning some rugged areas in its course, the Yongnam-ro had some advantages: first, it avoided the troublesome communication system connected by river crossings because its path followed longitudinal valleys of the Han and Naktong rivers; second, it connected the waterways of the Han and Naktong; third, it formed the pivot belt …

Numerical Modeling Of The Internal Ballistics Of A Gas Gun., Ameziane Harhad

LSU Historical Dissertations and Theses

A numerical procedure is applied to three principal flow models of a gas gun, the discharge chamber, the main chamber, and the barrel chamber. In the first two models, an explicit method, the second order MacCormack scheme, is used to solve the Navier-Stokes equations for two-dimensional (axisymmetric), time dependent, compressible flow. The fluid is assumed to be a perfect gas. The flow boundaries may be arbitrary curved and time dependent. Transformations have been used to map the physical space into a computational space with uniform grid spacing. A grid generation surface has been achieved for various wall shapes. The third …

A Finite Element Analysis Of High Temperature Fatigue And Creep At A Stress Concentration., Faysal Abdou Kolkailah

LSU Historical Dissertations and Theses

The Bodner-Partom model of nonlinear time-dependent material behavior was incorporated into a finite element code to predict the strain response at the notch root of an Inconel 718 specimen subjected to cyclic tension-compression at 649(DEGREES)C. A numerical minimization technique was developed to establish the parameters in the Bodner-Partom model. This technique was applied to creep and stress strain data obtained from button-head test specimens tested at 649(DEGREES)C. These parameters were found to be in general close agreement with those obtained by other investigators. The test specimen for the experimental phase of this research was double notched with an elastic stress …

Microbial Products From Sweet Potato Wastes., Nhuan Phu Nghiem

LSU Historical Dissertations and Theses

Microbial production of methane from alkaline sweet potato wastes was studied. Assessment of methane production potential was based on total COD of the wastes. A single-stage and a two-stage system were studied. In both systems, to ensure stable operation and high performance, methane fermenters had to be initially seeded with large quantities of methane formers. A 50% inoculum (based on total fermenter volume) was found to be most effective. Methane formers tended to aggregate to form spherical particles which had extremely high settling rates, this eliminated the requirement of cell recycle. They obtained the nutrients required for their growth through …

Toward A Classification Of General Systems Theory Concepts: The Categorization Of Vocabulary Components And Their Usage Patterns In The Literature., Stephanie S. Robbins

LSU Historical Dissertations and Theses

The achievement of the goals of General Systems Theory are, in part, dependent on the development and use of a language which will facilitate relevant communication across disciplines so that structural similarities which are hidden by the use of specialists' languages can be examined. This study explores various dimensions of the language associated with GST. The major vocabulary components associated with GST were identified using four criterion. The first was designed to enumerate terms that reflected the dimensional aspects of systems terminology needed to identify systems characteristics which are isomorphic across different disciplines. The second criterion eliminated discipline-bound terms with …

Teacher Attitudes Toward Computer Literacy., Leroy George Stenzel Jr

LSU Historical Dissertations and Theses

A survey on attitudes and perceptions toward computer technology was conducted among 464 teachers in five randomly chosen parishes in the State of Louisiana. In each parish one elementary school, one junior high or middle school, and one high school were randomly chosen. The sample included every teacher in each of the chosen schools. A total of 369 (79.5 percent) surveys were returned. The purposes of the study were to delineate, analyze, and document the reasons that teachers may avoid using computer technology. Lack of opportunity, lack of assistance, and lack of equipment and materials appeared to be the primary …

Recovery Of Sugars From Blackstrap Molasses By Ion Exclusion., Edgar L. Aguirre G.

LSU Historical Dissertations and Theses

Ion exclusion is a chromatographic separation of ionic from non-ionic material on a bed of ion exchange resins. This process has been proposed for the recovery of sucrose from molasses. However, separation of sucrose from the non-sugar and reducing sugar fractions is difficult. On the contrary, separation of reducing sugars from non-sugars is relatively easy. Inverting the sucrose to reducing sugars for further separation by ion exclusion gives a way to recover essentially all the sugars from molasses. Also, it eliminates the need for crystallization, since the reducing sugars can be sold in solution. The total sugar content in blackstrap …