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Psychophysiological Concomitants Of Levels Of Cognitive Processing., Ronald Alan Cohen Jan 1982

Psychophysiological Concomitants Of Levels Of Cognitive Processing., Ronald Alan Cohen

LSU Historical Dissertations and Theses

The peripheral electrophysiological manifestations of levels of cognitive processing and memory performance were investigated by recording heart rate, skin conductance, skin temperature and electromyogram measures during a three phase verbal task. Subjects processed words at three cognitive levels (phonetic, low semantic, high semantic), and physiological recordings were made during cue covert processing and verbalization phases. Three colored lights were used to cue subjects to the appropriate processing level for each word. An incidental memory task was given following the processing tasks. As expected, words processed at the higher cognitive levels were recalled better. There was greater physiological reactivity associated with …

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Teacher Attitudes Toward Computer Literacy., Leroy George Stenzel Jr Jan 1982

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 …

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Inheritance Of Resistance To Soil Rot, Streptomyces Ipomoea And Other Characters In The Sweet Potato, Ipomoea Batatas, L., Roberto Soenarjo Dwidjosewoyo Jan 1982

Inheritance Of Resistance To Soil Rot, Streptomyces Ipomoea And Other Characters In The Sweet Potato, Ipomoea Batatas, L., Roberto Soenarjo Dwidjosewoyo

LSU Historical Dissertations and Theses

Genetic study on sweet potato resistance to the soil rot disease, Streptomyces ipomoea and other characters was conducted from 1979 through 1981. In control crosses, L(,3)-64 was incompatible with L(,4)-62 and L(,4)-112 with L(,4)-131. The average pod set for all progenies was 16.95%. Additive genetic effects were more important than non-additive in the inheritance of resistance. Resistant families were only produced from crosses between resistant parents and most progenies from crosses of moderatley resistant x resistant, resistant x susceptible and moderately resistant x susceptible parents produced moderately resistant segregates. Polycross progenies from resistant parents, L(,4)-131 and L(,6)-135, had families with …

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Application Of Electroanalytical Techniques To Environmental Thallium Compounds., Linda Katherine Hoeflich Jan 1982

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 …

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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 Jan 1982

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 …

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On Admissible Shifts Of Generalized White Noises, Hui Hsiung Kuo, W. Smolenski Jan 1982

On Admissible Shifts Of Generalized White Noises, Hui Hsiung Kuo, W. Smolenski

Faculty Publications

Let S be the Schwartz space of rapidly decreasing real functions. The dual space S* consists of the tempered distributions and the relation S ⊂ L2(R) ⊂ S* holds. Let γ be the Gaussian white noise on S* with the characteristic functional γ(ξ) = exp{-∥ξ∥2/2}, ξ ∈ S, where ∥·∥ is the L2(R)-norm. Let ν be the Poisson white noise on S* with the characteristic functional ν(ξ) = expΥ{hooked}R∫R {[exp(iξ(t)u)] - 1 - (1 + u2)-1(iξ(t)u)} dη(u)dt), ξ ∈ S, where the Lévy measure is assumed to satisfy the condition ∫Ru2dη(u) < ∞. It is proved that γ*ν has the same dichotomy property for shifts as the Gaussian white noise, i.e., for any ω ∈ S*, the shift (γ*ν)ω of γ*ν by ω and γ*ν are either equivalent or orthogonal. They are equivalent if and only if when ω ∈ L2(R) and the Radon-Nikodym derivative is derived. It is also proved that for the Poisson white noice νω is orthogonal to ν for any non-zero ω in S*. © 1982.

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Matroids Whose Ground Sets Are Domains Of Functions, James Oxley Jan 1982

Matroids Whose Ground Sets Are Domains Of Functions, James Oxley

Faculty Publications

From an integer-valued function f we obtain, in a natural way, a matroid Mf on the domain of f. We show that the class of matroids so obtained is closed under restriction, contraction, duality, truncation and elongation, but not under direct sum. We give an excluded-minor characterization of and show that consists precisely of those transversal matroids with a presentation in which the sets in the presentation are nested. Finally, we show that on an n-set there are exactly 2”. © 1982, Australian Mathematical Society. All rights reserved.

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Asymptotic Properties Of Random Subsets Of Projective Spaces, Douglas G. Kelly, James G. Oxley Jan 1982

Asymptotic Properties Of Random Subsets Of Projective Spaces, Douglas G. Kelly, James G. Oxley

Faculty Publications

A random graph on n vertices is a random subgraph of the complete graph on n vertices. By analogy with this, the present paper studies the asymptotic properties of a random submatroid ωr of the projective geometry PG(r— 1, q). The main result concerns Kr, the rank of the largest projective geometry occurring as a submatroid of ωr. We show that with probability one, for sufficiently large r, Krtakes one of at most two values depending on r. This theorem is analogous to a result of Bollobás and Erdös on the clique number of a random graph. However, whereas from …

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On Some Extremal Connectivity Results For Graphs And Matroids, James G. Oxley Jan 1982

On Some Extremal Connectivity Results For Graphs And Matroids, James G. Oxley

Faculty Publications

Dirac and Halin have shown for n = 2 and n = 3 respectively that a minimally n-connected graph G has at least ((n-1)|V(G)|-2n)/(2n-1) vertices of degree n. This paper determines the graphs which are extremal with respect to these two results and, in addition, establishes a similar extremal result for minimally connected matroids. © 1982.

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Lsu General Catalog 1982-1983, Louisiana State University And Agricultural And Mechanical College Jan 1982

Lsu General Catalog 1982-1983, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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Distributional Boundary Values Of Harmonic And Analytic Functions, R. Estrada, R. P. Kanwal Jan 1982

Distributional Boundary Values Of Harmonic And Analytic Functions, R. Estrada, R. P. Kanwal

Faculty Publications

A theory for distributional boundary values of harmonic and analytic functions is presented. In this analysis there arise several indicators that measure the growth of these functions near the boundaries. An extension of the Phragmén-Lindelöf maximum principle is derived. Furthermore, the algebraic properties of the space of real periodic distributions are studied. By introducing a new product, the harmonic product, the boundary conditions involving harmonic functions are transformed into ordinary differential equations. © 1982.

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Extensions Of L-Homomorphisms, Eleanor R. Aron, Anthony W. Hager, James J. Madden Jan 1982

Extensions Of L-Homomorphisms, Eleanor R. Aron, Anthony W. Hager, James J. Madden

Faculty Publications

It is shown that, in abelian l-groups, each morphism to a complete vector lattice extends over any majorizing embedding. This extends a result of the first author for Archimedean f-algebras with identity, and the recent Luxemburg-Schep theorem for vector lattices, and solves a problem of Conrad and McAlister. The proof presented here differs substantially from the Luxem- burg-Schep proof. Ours uses the Yosida representation and Gleason’s theorem on topological projectivity—this is novel, and seems relatively economical and transparent. The l-group theorem is shown to imply, and with some modestly categorical machinery, to be implied by, certain similar statements in subcategories …

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Straightbred And Crossbred Beef Cattle Performance In Louisiana, John W. Knox Jan 1982

Straightbred And Crossbred Beef Cattle Performance In Louisiana, John W. Knox

LSU Agricultural Experiment Station Reports

No abstract provided.

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Transient Inelastic Thermal Stresses In A Solid Cylinder With Temperature Dependent Properties., Habib Pour-Mohamadian Jan 1982

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 …

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Numerical Gas Dynamics Of Internal And External Flows In Gun Barrels., Oktay Baysal Jan 1982

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 …

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Studies Of Helix Formation In Model Chains, Poly(L-Proline) And Somatostatin (Polyproline)., Jerome Anthony Darsey Jan 1982

Studies Of Helix Formation In Model Chains, Poly(L-Proline) And Somatostatin (Polyproline)., Jerome Anthony Darsey

LSU Historical Dissertations and Theses

The studies presented in this work relate to conformational studies of polymers and biopolymers. Polyethylene is used as a model chain to develop a general formalism to characterize helical molecules with varying degrees of flexibility. The average projection of a unit vector along the last bond onto a unit vector along the first bond is the principal quantity calculated for modeling purposes. Behavior of this average projection has been examined for helical chains in which flexibility is introduced by either of two devices: random occurrence of a configuration much different from that required for helix propagation and use of a …

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Ion-Ion And Ion-Solvent Interactions In The System Sodium-Aluminum Tetraethyl-Benzene-Hmpa., James Harold Medley Jan 1982

Ion-Ion And Ion-Solvent Interactions In The System Sodium-Aluminum Tetraethyl-Benzene-Hmpa., James Harold Medley

LSU Historical Dissertations and Theses

The behavior of the system NaAlEt(,4)-benzene-HMPA as a function of the mole ratio HMPA:NaAlEt(,4) has been studied via equivalent conductance measurements, viscosity measurements and ('23)Na, ('27)Al and ('1)H nmr spectroscopy. This system has the property of forming two immiscible liquid phases. Therefore a careful analysis of the dependence of the lower phase volume on the mole ratio was undertaken. Additionally the uptake of benzene in the lower phase can be followed via nmr integration. The volume studies indicate a similarity in behavior of the anionic organoaluminum "liquid clathrate" compounds. The formation of two liquid phases has been related to the …

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Numerical Modeling Of The Internal Ballistics Of A Gas Gun., Ameziane Harhad Jan 1982

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 …

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Scs 62: Continuous Posets: Injective Hull And Macneille Completion, Rudolf-Eberhard Hoffmann Dec 1981

Scs 62: Continuous Posets: Injective Hull And Macneille Completion, Rudolf-Eberhard Hoffmann

Seminar on Continuity in Semilattices

No abstract provided.

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Palynology And Biostratigraphy Of Some Legnite Bearing Sediments From The Dolet Hills And Naborton Formations (Lower Tertiary System) Desoto Parish, Northwest Louisiana, Thomas S. Pavlik Dec 1981

Palynology And Biostratigraphy Of Some Legnite Bearing Sediments From The Dolet Hills And Naborton Formations (Lower Tertiary System) Desoto Parish, Northwest Louisiana, Thomas S. Pavlik

LSU Historical Dissertations and Theses

Palynological analysis of 30 samples from a single well core containing the Chemard Lake Lignite and associated sediments from the Naborton and Dolet Hills formations in northwestern Louisiana provided a miospore assemblage that resembles Paleocene assemblages from other areas of the Gulf and Atlantic Coastal Plains. This suggests a Late Paleocene (Early-Middle Sabinian) Age for these formations. The results from a sample similarity index analysis indicate samples from the succession can be grouped into palynostratigraphic zones. Five different diversity procedures were applied to the data and indicated variation in diversity among the palyno-zones. The presence of a few dinoflagellate cysts …

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Scs 61: The Category Cd Of Completely Distributive Lattices And Their Free Objects, Karl Heinrich Hofmann Nov 1981

Scs 61: The Category Cd Of Completely Distributive Lattices And Their Free Objects, Karl Heinrich Hofmann

Seminar on Continuity in Semilattices

No abstract provided.

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Scs 60: Miniworkshop On Continuous Lattices At Tulane University From Thursday, November 19, 1981 Through Saturday, November 21, 1981, Karl Heinrich Hofmann Nov 1981

Scs 60: Miniworkshop On Continuous Lattices At Tulane University From Thursday, November 19, 1981 Through Saturday, November 21, 1981, Karl Heinrich Hofmann

Seminar on Continuity in Semilattices

No abstract provided.

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Scs 59: Sober Quotients, John R. Isbell Nov 1981

Scs 59: Sober Quotients, John R. Isbell

Seminar on Continuity in Semilattices

No abstract provided.

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Meet-Continuous Lattices In Which Meet Is Not Continuous, Marcel Erné, Hartmut Gatzke Sep 1981

Meet-Continuous Lattices In Which Meet Is Not Continuous, Marcel Erné, Hartmut Gatzke

Seminar on Continuity in Semilattices

No abstract provided.

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Scs 58: The Cl-Compactification Of A Continuous Poset, Rudolf-Eberhard Hoffmann Sep 1981

Scs 58: The Cl-Compactification Of A Continuous Poset, Rudolf-Eberhard Hoffmann

Seminar on Continuity in Semilattices

No abstract provided.

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Academic Achievement, Self-Concept And Attitudes Towards Reading Of Students In Bilingual And Traditional Programs., Theresa Doris Chretien Jan 1981

Academic Achievement, Self-Concept And Attitudes Towards Reading Of Students In Bilingual And Traditional Programs., Theresa Doris Chretien

LSU Historical Dissertations and Theses

This study was designed to investigate the comparative achievement in reading and mathematics, self-concept, and attitude towards reading of bilingually educated and traditionally educated students. To determine differences in achievement, 239 third- and sixth-grade students enrolled in bilingual education (French-English) and traditional education classes in St. Martin Parish, Louisiana, were pre- and post-tested with standardized instruments in word knowledge, reading comprehension, self-concept, and attitude towards reading. The findings were tested statistically at the .05 level. In academic achievement, there were significant differences between the two groups only in mathematics computation, favoring bilingually educated students at the third-grade level and traditionally …

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The Efficacy Of Computer-Based And Tape-Recorded Assistance In Second-Semester Freshman Ear-Training Instruction., Janet Claire Garton Jan 1981

The Efficacy Of Computer-Based And Tape-Recorded Assistance In Second-Semester Freshman Ear-Training Instruction., Janet Claire Garton

LSU Historical Dissertations and Theses

Harmonic dictation materials available in the Ear-Training Laboratory at Louisiana State University were programmed for computer presentation in order to observe the effects of the computer medium in comparison to the traditional laboratory approach. In accordance with the Solomon Four-Group Design, the sixty-two second-semester freshman music theory students were assigned randomly to computer and tape groups. Half of each group was assigned at random to take a pretest which was designed by the experimenter. After six withdrawals from the course, a total research population of fity-six students remained. Members of both the experimental and control groups were asked to practice …

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Cognitive Predictors Of Success Of Graduate Nurses On State Board Test Pool Examinations And After Two Years Employment., Mary Brown Neiheisel Jan 1981

Cognitive Predictors Of Success Of Graduate Nurses On State Board Test Pool Examinations And After Two Years Employment., Mary Brown Neiheisel

LSU Historical Dissertations and Theses

The main purposes of this study were to determine the relationships between cognitive predictors and the success of graduate nurses on the State Board Test Pool Examinations and between cognitive predictors and the success of the nurse after two of years employment. Data were obtained and recorded on appropriate sheets for the first hypothesis and from a mailed questionnaire for the second hypothesis. The population for the first group was the members of five graduating classes of a state university, and data for the second group was from 37.7 percent of the members of one graduating class. Statistical analyses of …

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Parenting Concepts, Skills, And Attitudes Among Selected South Louisiana University Freshmen., Barbara Levearn Hyde Jan 1981

Parenting Concepts, Skills, And Attitudes Among Selected South Louisiana University Freshmen., Barbara Levearn Hyde

LSU Historical Dissertations and Theses

Parenting is probably one of the most important jobs in the entire world. Education in parenting can help the individual decide if and when the process of parenting will be undertaken. The problem as found in society is that individuals may not be receiving adequate education in parenting. The overall purpose of this study was to help identify the educational needs of youth in South Louisiana in the area of parenting. Parenting knowledge, skills, and attitudes were specifically focused upon. Each of these aspects of parenting behavior was studied to also determine differences among males and females. Freshmen entering a …

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Natural Convection, Two-Phase Flow, And Crystallization In A Vacuum Pan Sugar Crystallizer., Jack Jerome Bunton Jan 1981

Natural Convection, Two-Phase Flow, And Crystallization In A Vacuum Pan Sugar Crystallizer., Jack Jerome Bunton

LSU Historical Dissertations and Theses

A mathematical model of a Vacuum Pan Sugar Crystallizer is developed. This mathematical model is based on the fundamentals of the physics of two-phase flow. Because of the complexity of the model, the time dependent solution is accomplished using numerical methods designed to be executed by a digital computer. The model generates velocity, pressure, temperature, and supesaturation profiles for the Pan, in response to the operating conditions and the design of the Pan. The motivation for the development of this model is to give an analytical tool to study the effects of Pan design, control systems, and operating conditions on …

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