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The Effects Of Various Lumbar/Sacral Back Support Systems Upon Human Peak Muscular Force, Total Work, And Average Power, Michael Lee Woodhouse

Theses and Dissertations in Urban Services - Urban Education

The purpose of the present investigation was to study the effects of two lumbar/sacral back supports upon peak muscular force, total work, and average power. Subjects consisted of ten well conditioned male volunteers with an age range of 21-35 years. Each subject volunteered individually to participate and was required to read and sign an inform consent form prior to participating in the investigation.

The investigative design was quasi-experimental with a repeated measures (treatment-by-subjects) methodology. Each subject experienced three testing treatments to include each lumbar/sacral support and one without. The testing protocol consisted of three isokinetic back testing devices developed by …

Ignition Of A Combustible Solid With Reactant Consumption, D. Glenn Lasseigne, W. E. Olmstead

Mathematics & Statistics Faculty Publications

The effects of excessive reactant consumption on the ignition of a combustible solid are introduced through a revised scaling of the heat release constant. Large activation energy asymptotics then yields a new one-parameter integral equation governing the temperature evolution near ignition. Analysis of the integral equation reveals a critical value of the parameter which distinguishes between the cases of ignition and nonignition. © 1987 Society for Industrial and Applied Mathematics

Limit Theorems In The Area Of Large Deviations For Some Dependent Random Variables, Narasinga Rao Chaganty, Jayaram Sethuraman

Mathematics & Statistics Faculty Publications

A magnetic body can be considered to consist of n sites, where n is large. The magnetic spins at these n sites, whose sum is the total magnetization present in the body, can be modelled by a triangular array of random variables (X(n) 1,..., X(n) n). Standard theory of physics would dictate that the joint distribution of the spins can be modelled by dQ_n(x) = z_n^-1 exp[ -H_n(x)]Π dP(x_j), where x = (x₁,..., x_n) ∈ Rⁿ, where H_n is the Hamiltonian, z_n is …

A Criterion For Vortex Breakdown, R. E. Spall, T. B. Gatski, C. E. Grosch

CCPO Publications

A criterion for the onset of vortex breakdown over a wide range of the Reynolds number is proposed. Based upon previous experimental, theoretical, and numerical studies, as well as a new numerical study, an appropriately defined local Rossby number is used to delineate the region where breakdown occurs. Comparisons are made with previously suggested criticality parameters and the unique features of the proposed Rossby number parameter are shown. A number of previous theoretical studies concentrating on inviscid standing‐wave analyses for trailing wing‐tip vortices are reviewed and reinterpreted, along with the previous numerical and experimental studies, in terms of the Rossby …

Fracture Detection In A Volcanic Oil Reservoir Using Discriminant Analysis Of Well Log Data, Joseph William Cross

OES Theses and Dissertations

A new method of detecting fractures using well logs is presented. The technique uses discriminant analysis to distinguish fractured from unfractured reservoir rock and was developed for the volcanic pay zone of Jatibarang oilfield, West Java, Indonesia.

The a priori information required to derive the discriminant function was provided by 22 wells known to penetrate intervals of either fractured or unfractured volcanics. The samples consisted of these 22 intervals digitized in one-meter increments (1256 meters total thickness). The discriminating variables were the petrophysical measurements made by 10 different types of well logs.

Discriminant analysis correctly classified 94.2% of the total …

Mesoscale Hydrographic Variability In The Vicinity Of Points Conception And Arguello During April May 1983: The Opus 1983 Experiment, Larry P. Atkinson, Kenneth H. Brink, Russ E. Davis, Burton H. Jones, Theresa Paluszkiewicz, David W. Stuart

CCPO Publications

In April and May 1983, interdisciplinary oceanographic observations were made of upwelling events in the Point Conception area off southern California. The principal objective was to observe the structure and time dependence of the upwelling system. To accomplish this, two ships, two aircraft, moorings, drogues, and satellite imagery were all included in the observational effort. During the intensive measurement period three main upwelling events and two intervening relaxation or downwelling intervals were sampled during what was a period of overall longer-term sea surface warming. Surface temperatures during upwelling were as low as 10.5°C in the upwelling center between Point Arguello …

Experimental Fine-Structure Branching Ratios For Na-Rare-Gas Optical Collisions, Mark D. Havey, F. T. Delahanty, Linda L. Vahala, Gary E. Copeland

Electrical & Computer Engineering Faculty Publications

Experimental ratios for branching into the fine-structure levels of the Na 3p multiplet, as a consequence of an optical collision with He, Ne, Ar, Kr, or Xe, are reported. The process studied is Na(3s²S_1/2)+R+nhNNa(3^p2P_j)+R+(n-1)_hN, where R represents a rare-gas atom and where the laser frequency N is tuned in the wings of the Na resonance transitions. The branching ratios are defined as I(D1)/I(D2) where I(D1) and I(D2) are measured intensities of the atomic Na D1 and D2 lines. The ratios are determined for detunings ranging from about 650 …

Symbol Of American Discontent: The Selective Service During The Vietnam War, Jean B. Todd

History Theses & Dissertations

This thesis presents an intensive study of the nature and scope of the Selective Service System in an effort to analyze the system that became the focal point of growing discontent with the Vietnam War. The primary objective is to determine whether the Selective Service System equitably executed its congressionally mandated objective of raising military manpower. In order to ascertain whether the System operated with balance and fairness, its structure and procedures are examined. The study of the Selective Service System's structure 'necessitated an analysis of the characteristics and backgrounds of both administrators and those who met the System's quotas …

The Effectiveness Of Three Modes Of Conversation On Coping With Stress In Same Sex Friendship Dyads, Robert Sal Costanza

Psychology Theses & Dissertations

To induce stress, pairs of friends, serving as subjects, were told they would be moving a spider through a maze. In three experimental conditions the friends were allowed to talk with one another prior to interacting with the spider; in the fourth condition the subjects waited alone. The conversations were structured so that the differential effects of problem-solving, emotion-based, or situationally unrelated discussion between friends could be observed on measures of negative mood state and behavioral fear. Subjects in the emotion-based condition generally experienced the greatest amounts of negative mood and fear. Problem-solving and unrelated discussions resulted in lower levels …

An Investigation Of Overvoltage Effects On A Gas-Blown Spark Gap, Michael Steven Mazzola

Electrical & Computer Engineering Theses & Dissertations

This experimental investigation addresses the anomalous overvoltage breakdown and subsequent recovery characteristics observed in gas-blown spark gaps. Previous investigations have reported a two-stage recovery process in self-break, pulse-charged, gas-blown spark gape in which the spark gap recovers first to an intermediate breakdown strength before recovering to the undisturbed breakdown voltage. The recovery process has been explained in terms of two different characteristic times. The first is that required to obtain initial recovery in which the spark gap regains its intrinsic breakdown strength. The second time is that required to obtain final recovery in which the pulse-charged spark gap regains the …

Wind Streamline Ambiguity Removal Of Microwave Scatterometer Data, Hans W. Zaepfel

Electrical & Computer Engineering Theses & Dissertations

There is a class of satellite microwave scatterometers that return oceanographic information which includes wind vectors with directional ambiguity. The first part of the ambiguity removal process is to reduce the data to a directional ambiguity of 180°. This thesis shows that wind direction change contains the information required for streamline ambiguity removal and that syntactic pattern recognition techniques can be used to locate the areas of wind direction change. Spreading the information along the areas of wind direction change results in the removal of the streamline ambiguity. The algorithm is implemented and the results are presented showing that it …

Speech Anxiety As A Self-Handicapping Strategy, Gerald Macon Travis

Psychology Theses & Dissertations

The present study tested the hypothesis that trait speech-anxious females use reports of speech anxiety symptoms and self-statements reflecting speech anxiety as a self-handicapping strategy to preserve their self-esteem when confronted with an evaluative threat situation. Forty-eight college females, classified into high and low speech anxiety groups on the basis of their responses to the Personal Report of Confidence as a Speaker (PRCS; Paul, 1966), served as subjects, It was predicted that trait speech-anxious subjects would report more speech anxiety symptoms and self-statements reflecting speech anxiety in an evaluative setting in which speech anxiety could serve as an explanation for …

The Synthesis And Evaluation Of The Cardiovascular Activity Of Novel Imidazole Ring Systems, Joseph E. De Los Angeles

Chemistry & Biochemistry Theses & Dissertations

An investigation was undertaken to synthesize and evaluate the cardiovascular activity of two imidazole ring systems. Imidazoles with hypotensive activity would provide novel potential antihypertensive drugs. These novel structures may also find use as chemical probes in the study of the cardiovascular system and as prototypes for other potential cardiovascular agents.

The histamine derivative, 7,7-dipyridyl-4,5,6,7-tetrahydroimidazo-[4,5-c]pyridine (ligand l), was demonstrated to possess significant hypotensive activity in laboratory rats. A 15 mg/Kg dose of ligand 1 produces a statistically significant decrease in blood pressure when injected IP. This hypotensive effect is also associated with marked increase in heart rate. Although compound 1 …

Chemoviscosity Modeling Of Thermosetting Resins, Jia-Mo Bai

Mechanical & Aerospace Engineering Theses & Dissertations

A new analytical model for simulating chemoviscosity of thermosetting resin has been formulated. The model is developed by modifying the well-established Williams-Landel-Ferry (WLF) theory in polymer rheology for thermoplastic materials. By introducing a relationship between the glass transition temperature Tg (t) and the degree of cure a(t) of the resin system under cure, the WLF theory can be modified to account for the factor of reaction time. Temperature-dependent functions of the modified WLF theory constants C₁(T) and C₂(T) were determined from the isothermal cure data. Theoretical predictions of the model for the resin under dynamic …

The Image Of The Nurse In A Professional Journal: A Historical Perspective, Dawn Louise Crane

Ellmer School of Nursing Theses & Dissertations

Authors of journal articles contribute to the image of the nurse that is projected to journal readers. The purpose of this study was to explore the image of nursing as portrayed in articles published in Nursing Outlook from 1960-1979. A descriptive study, with content analysis, was conducted using articles concerned with professionalism or nursing education published in Nursing Outlook from 1960-1979 (a time identified as negative for societal images of nursing). The educational background of the authors was noted. Findings indicated that the majority of authors projected the image of a nurse as a well-educated, independent professional; images not reflective …

Use Of Two Data Collection Strategies To Evaluate Stressors And Coping In Spouses Of Patients Sustaining A Myocardial Infarction, Pamalla Manz Stockho

Ellmer School of Nursing Theses & Dissertations

This study compared stressors and coping mechanisms identified by spouses of myocardial infarction (MI) patients in a close-ended, self-administered questionnaire (SAS) and an open-ended, nurse-administered questionnaire (NAS). Twenty female participants were divided into two groups and completed the NAS, SAS, and demographic information. The purpose of dividing the group was to explore possible experimenter effect. One group was administered the NAS preceding the SAS. The second group completed the SAS preceding the NAS. Qualitative analysis revealed equivalent stressors and coping mechanisms identified by the NAS and SAS. Stressors related to the MI decreased over time for spouses whose husbands made …

A Quantitative Approach To Simulation And Analysis Of Storm Water Systems, John Nathan Paine

Civil & Environmental Engineering Theses & Dissertations

A generalized package of hydrologic and hydraulic models and programs is developed for the quantitative analysis of watersheds and drainage networks. The package is microcomputer based and is available to interested parties. Full documentation is included in the Appendix. The approach applies a lengthy historical rainfall record to the system in continuous simulation. One of the most powerful operational hydraulic routing models available is adopted into the package. Output takes the form of statistical predictions of flood stages, discharges, storage requirements, and rainfall analyses for various return-periods. Computer runs are completely summarized. The package was applied to a 969-acre watershed …

The Effect Of Grinding On The Sorption Capacity Of Activated Carbon, John Garrett Dempsey

Civil & Environmental Engineering Theses & Dissertations

The current procedure employed to design full scale activated carbon contacting systems is presented in detail and followed by a review of the more important process controls and operating parameters. Inherent limitations of the design procedure are identified, with the need to be able to accurately predict carbon sorption capacity from bench scale analysis determined to be the most important. Some of the more recent models developed to predict activated carbon sorption capacity were analyzed leading to the realization that even the most sophisticated dynamic models were based upon sorption capacities determined from classical isotherm procedures. The validity of the …

Geometric Photoisomer Investigation Of Bilirubin (Z,Z)-Ixα, Robert Howe Walker Iii

Chemistry & Biochemistry Theses & Dissertations

Numerous investigations of bilirubin have been reported in the literature. Correlation among these investigations can not be made because of multiple behavioral changes characteristic of the solubilized pigment. This research was initiated to evaluate bilirubin and its associated isomers in identical chemical environments.

Two different solvent systems were experimentally selected to study chemical behavior of bilirubin and occurring photoisomers. A ternary solution consisting of 1:3:1 chloroform:methanol:water was used exclusively in visible spectrophotometric analyses. Also, a pH 10.00 buffer was utilized. This latter system has successfully been used in spectrophotometric and voltammetric work.

Four different photochemical processes have been detected spectrophotometrically, …

An Experimental And Analytical Investigation Of Incompressible Fluid Flow Through A Distensible Tube System, Steven C. Wells

Mechanical & Aerospace Engineering Theses & Dissertations

An analysis was made of pressure and flow in a novel elastic tube system which has been used to theorize certain aspects of renal hemodynamic cs. Validation of the theory could alter the treatment of certain heart and kidney disorders. In an attempt to better understand a system flow anomaly under steady driving head conditions, experiments were performed, and a mathematical model was developed. The development of the model incorporated a set of nonlinear differential and algebraic equations. Using a finite-difference analysis as the method for obtaining a numerical solution, various pressures and flows were obtained. Results for the steady-state …

The Effects Of Presentation Method And Stimulus String Length In A Letter Matching Task, Sharolyn Ann Converse

Psychology Theses & Dissertations

The present study investigates the effects of presentation method. stimulus string length, and pair type on matching task response time and accuracy. It was hypothesized that sequential presentation and small stimulus arrays evoke holistic processing while long simultaneous sets are matched according to serial self-terminating comparison strategies. The current results indicate that serial self-terminating comparison processes were employed across the experimental conditions. A fixed-order serial self-terminating scan was supported for two and four letter stimulus sets. For six letter strings, subjects appeared to adopt random order self-terminating searches if a divergent element was not located among the first few letter …

Confederate Leather Supply: Industrial Improvisation In The Confederacy, James E. Parker Iii

History Theses & Dissertations

This is a study of the Confederacy's attempt to supply all types of leather products necessary to equip and maintain adequately its armies during the Civil War. This study includes all phases of leather supply efforts made at home and abroad by civilians, the Army, state and political leaders, and slaves. This research gives insight on the importance of a very basic item of supply that is often overlooked by historians as a significant factor in the Civil War. Leather deficiencies were serious in the Confederacy throughout the war. Despite the revolutionary efforts on the part. of the government and …

Landmark Selection And Temporal-Spatial Integration: Macrospatial Abilities In Young Adults And Elderly Adults, Deans Haggerty

Psychology Theses & Dissertations

Groups of young adults and elderly adults participated in a study examining age-related changes in macrospatial cognitive abilities. Perceptual differentiation/selection abilities were tested using a Landmark Selection task, while temporal-spatial integration abilities were explored through the use of a Scrambled Route task. In the Landmark Selection task, subjects viewed a slide presentation of a walk and then chose the landmarks which best represented the walk. For the Scrambled Route task, after viewing a slide presentation of a scrambled walk, subjects made distance estimations involving pairs of selected landmarks. Also included were self-assessment scales of spatial abilities and two psychometric tests …

Environmental Factors Affecting Nocturnal Migrations Of Macrobenthos, C. Timothy Morris

Biological Sciences Theses & Dissertations

Nocturnally dispersing macrobenthic invertebrates of the Lafayette River, Norfolk, Virginia were collected from September 4 to October 4, 1982 to determine environmental factors affecting migrations. A total of 55 taxa were identified from 325 surface and bottom nocturnal plankton tows. Peracaridan crustaceans were the dominant (99.0% of the total density) group collected. Six of the commonly collected species showed a significant (P

The Effect Of The Revolution On Norfolk Politics, Mary C. Chrysostomides

History Theses & Dissertations

This study sought to determine whether the Revolution had a revolutionary effect on Norfolk as measured by changes in the wealth and occupation of common councilmen, the nature of politics, and the formal structure of the government of the borough. The politics, politicians, and governmental structure of Norfolk twenty years before the Revolution were compared to the politics, politicians, and governmental structure twenty years after the Revolution. The data for the study were drawn from damage claims, newspapers, wills, probate records, tax records, personal papers, travel accounts, petitions submitted to the General Assembly, statutes and ordinances, and other public records. …

Attributions For Violence In Relationships: Do Battered Women Blame Themselves?, Debra Down

Psychology Theses & Dissertations

The central purpose of this research was to compare attributions of blame for spousal violence made by women who were in violent relationships with those of abused women who had sought shelter and those of women who had never been abused. Both clinicians and researchers (e.g., Frieze, 1979; Walker, 1979) have included victims of marital abuse among victims who self-blame, and have contended that self-blame contributes to remaining in an abusive relationship. Previous work, however, has not considered the repetitive nature of spouse abuse, and has routinely confounded self-causality with self-blame.

Nonabused women and abused women who remained in relationships …

Optimal Cure Cycle Design Of A Resin-Fiber Composite Laminate, Jeenson Sheen

Mechanical & Aerospace Engineering Theses & Dissertations

High performance polymeric composites have been experiencing increasing usage in the aerospace and automobile industries. Such materials are commonly composed of long or chopped fibers embedded in the thermosetting resin matrix. Changes in physical and chemical properties of such composite materials during the cure process are rather complex. Thus, it is not a trivial task to properly design a cure cycle (temperature and pressure profiles) for a cure process. The material should be cured uniformly and completely with the lowest void content; the temperature inside the laminate must not exceed some maximum value; and the cure process should be completed …

Multitrait-Multimethod Analysis Of Performance Ratings Using Behaviorally Anchored And Behavioral Checklist Formats, Todd A. Baker

Psychology Theses & Dissertations

The construct validity of a behaviorally anchored rating scale (BARS) and a behavioral checklist was examined for evaluation of performance in leaderless group discussions. The assessors consisted of 12 graduate students in industrial/organizational psychology who were randomly assigned to use the behavioral checklist or the BARS format. Performance ratings were made of 12 ratees in both assigned and nonassigned role leaderless group discussions. The ratings were analyzed with a multitrait-multimethod approach using analysis of variance (Dickinson 1977; 1984) ~ Convergent validity and discriminant validity were found for the assigned discussion, whereas only discriminant validity was found for the nonassigned discussion. …

Benthic Foraminifera And Paleoenvironments Of The Arcola Limestone Member Mooreville Formation (Campanian) In Eastern Mississippi And Western Alabama, Julia K. Palmer

OES Theses and Dissertations

Eighty-one species of benthic foraminifera have been recovered from chalky marls of the upper Mooreville Formation including the Arcola Limestone Member, and the basal Demopolis Formation located in five sections in east-central Mississippi and west-central Alabama. These species have been described and seventy-nine illustrated. Analysis of the environmental or depth preferences of abundant species together with planktonic percentages and benthic species diversity, indicates that the chalky marls were deposited in a broad shallow shelf sea (subtidal conditions less than 100m) greatly influenced by open ocean conditions. The benthic assemblage is composed of a mixture of typically neritic and bathyal species …

Cognitive Influences On Flavor Discrimination: Training Novices For Beer Flavor Differentiation, Rosalynn M. Peron

Psychology Theses & Dissertations

Four training techniques were employed to investigate the effects of increasing knowledge of beer flavor on novices' ability to differentiate among beers on the basis of taste. These techniques included (a) learning definitions of beer flavor terminology (Verbal Condition); (b) having additional experience with taste sensations (Taste Condition); (c) having a combination of the verbal and taste techniques (Verbal/Taste Condition); and (d) no training (Control Condition). After preliminary testing, 40 subjects (10 per training condition) were selected to participate in pre- and post-training tasks in which they rated similarity between beers, between beers and flavor-descriptive adjectives, and between flavor-descriptive adjectives. …