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Survival And Reproduction Of The Freshwater Grass Shrimp Palaemonetes Paludosus (Gibbes 1850) (Decapoda:Palaemonidae), In Saline Water, Brian Thomas Lowe

OES Theses and Dissertations

To determine the effects of salinity on adult and larval survival, egg deposition, egg hatching and metamorphosis, shrimp were held in the laboratory and exposed to treatment salinities ranging from O to 35 ppt. Tests on adult survival indicate a 96 hour LC-50 between 30 and 35 ppt. Longer term tests on adult survival showed high mortality in salinities greater than 15 ppt. Shrimp became ovigerous in salinities of O - 20 ppt with egg hatching and metamorphosis limited to O - 5 ppt. Starved- larvae hatched from field captured ovigerous females in O ppt were able to metamorphose in …

A Method For The Large Scale Purification Of Hcg (Human Chorionic Gonadotropin) From The Urine Of Pregnant Women, Chun-Shyan Kuo

Chemistry & Biochemistry Theses & Dissertations

A large scale preparation of human chorionic gonadotropin (HCG) from the urine of pregnant women was accomplished by using kaolin adsorption, NH₄OH extraction and DEAE-cellulose ion exchange. A recovery about 81% of HCG and a specific activity in the 2,000-3,000 IU/mg range was achieved using this purification method.

Two HCG activity fractions, HCG I & HCG II, were isolated from DEAE-cellulose chromatography by a stepwise sodium chloride gradient elution. HCG I was eluted at 0.01-0.02 M NaCl while HCG II was eluted at 0.12-0.02 M NaCl.

The differences between HCG I and HCG II have been studied. The …

The Effects Of Irrelevant Dimensions On The Predictive Value Of A Warning Signal, Ruth Justine Arnegard

Psychology Theses & Dissertations

Past research has neglected irrelevant dimensions of visual warning signals in choice reaction-time tasks. The present study examined the effects of an irrelevant dimension of a visual warning signal and that signal's value in predicting a response stimulus on choice reaction time. A warning signal, which was a geometric figure, appeared in the center of a VDT screen and was followed by one of two response stimuli (open circles). The predictive value of the warning signal was defined as the percentage of trials during which the warning signal accurately predicted the response stimulus by size and was manipulated in the …

The Effects Of Low Doses (1 To 500 Kilograys) Of 100-Kev Electrons On Four Polymers, Cynthia Anne Bradbury

Physics Theses & Dissertations

Commercial films of polyetherimide (PEI), polyetheretherimide (PEEI), polyethylene terephthalate (PET), and polycarbonate (PC) were exposed in vacuum to l 00-keV electron radiation to total absorbed doses of l, l 0, l 00, 300, and 500 kilograys. The concentration of radiation-generated radicals, as measured by electron paramagnetic resonance (EPR), increased by over an order of magnitude in all four polymers. Correspondingly, the intensity of the infrared absorption peaks increased uniformly for all doses. Solubility tests resulted in decreased solubility in all polymers. IR, EPR, and solubility suggest dehydrogenation of the aliphatic C-H and phenyl C-H sites. The data indicated that cross …

Numerical Simulation Of Turbulent Flows Past Three-Dimensional Cavities, Shivakumar Srinivasan

Mechanical & Aerospace Engineering Theses & Dissertations

Computations have been performed to simulate turbulent supersonic, transonic, and subsonic flows past three-dimensional deep, transitional, and shallow cavities. Simulation of these self sustained oscillatory flows has been generated through time accurate solutions of Reynolds averaged full Navier-Stokes equations using the explicit MacCormack scheme. The Reynolds stresses have been modeled, using the Baldwin-Lomax algebraic turbulence model with certain modifications. The computational results include instantaneous and time averaged flow properties everywhere in the computational domain. Time series analyses have been performed for the instantaneous pressure values on the cavity floor. Comparison with experimental data is made in terms of the mean …

Forced Sex In Battering Relationships: An Ethnographic Investigation, Leigh Hofheimer

Institute for the Humanities Theses

This research examines the complex problem of forced sex in battering relationships. Interviewing eleven women in a battered women's shelter in a southeastern city, I focused on both their perceptions of forced sex and its effects on their self-esteem, expectations and body-image.

Based on the interviews I conclude that forced sex needs a broader definition than the traditionally accepted definition of rape. In addition, the victims' memories of earlier incidents of physical abuse during sex may influence their perceptions of when they are being forced. This study suggests that future researchers and members of the helping profession should include the …

Atamm Multicomputer System Design, William Robert Tymchyshyn

Electrical & Computer Engineering Theses & Dissertations

The Algorithm To Architecture Mapping Model, or ATAMM, is a graph theoretic design methodology that has been created to resolve design and performance issues involved with concurrent processing. Petri-net marked graphs are used to represent the computational environment.

This thesis describes the development of a multicomputer system which will operate within the bounds specified by the ATAMM model. The system is first designed and implemented using the framework of standard multicomputer design theory. A validation is then performed by the comparison of the system's computational performance to results predicted by ATAMM. This validation is shown to be successful for three …

An Examination Of Factors Which Contribute To Errors And Omissions In The Polling Place On Election Day, Ann J. Washington

Theses and Dissertations in Urban Services - Urban Education

The purpose of this study was to investigate and assess factors which appeared to contribute to errors and omissions made by the citizens who worked as election officers in the polling places in Norfolk, Virginia on election day. The study was conducted in two phases during and immediately following the November general elections in 1986 and 1987.

In the first phase, a comparison was made of two different approaches to formatting election-day procedural materials--subject-formatting and time-formatting--in an effort to determine which approach appeared to have a greater influence on reducing the number of errors and omissions occurring in the polling …

"Wretched, Bloody, And Usurping Boar"? An Evaluation Of The Historicity Of Shakespeare's Richard Iii, Kathryn Kiff

Institute for the Humanities Theses

Shakespeare's portrait of Richard III as a diabolical monster was based on the hostile accounts fashioned about him during the Tudor regime. Sir Thomas More's Richard III established the definitive image of Richard as the deformed tyrant who usurped the throne and murdered his nephews. This was the portrait that Shakespeare inherited from the sixteenth-century writers who incorporated More's account into their chronicles. This thesis examines Shakespeare's portrayal of Richard and the chronicle sources upon which he drew in order to show how Shakespeare's portrait of Richard developed. Although Richard was not the evil character presented in Shakespeare's play, it …

Job Satisfaction Among Three Different Dental Hygiene Occupational Settings, Ruth Halstead Hull

Dental Hygiene Theses & Dissertations

A survey was conducted to determine differences in job satisfaction which may exist among dental hygienists employed in private practice positions, public health positions, and dental hygiene education positions. A modified version of the questionnaire developed by the Washington State Dental Auxiliaries Project was mailed to all public health dental hygienists, all dental hygiene educators, and a randomized sample containing ten percent of private practice employed dental hygienists residing in North Carolina for a total of 334 participants. From a 76 percent response rate, results indicated that dental hygiene educators feel more satisfied overall than private practice dental hygienists and …

Application Of Advanced Grid Generation Techniques For Flow Field Computations About Complex Configurations, Monchai Kathong

Mechanical & Aerospace Engineering Theses & Dissertations

In the computation of flow fields about complex configurations, it is very difficult to construct a boundary-fitted coordinate system. An alternative approach is to use several grids at once, each of which is generated independently. This procedure is called the "multiple grids" or "zonal grids" approach, and its applications are investigated in this study. The method is a conservative approach and provides conservation of fluxes at grid interfaces. The Euler equations are solved numerically on such grids for various configurations. The numerical scheme used is the finite-volume technique with a three-stage Runge-Kutta time integration. The code is vectorized and programmed …

Foraminiferal Biostratigraphy And Paleoenvironmental Analysis Of The Anahuac Formation (Late Oligocene-Early Miocene) From A Deep Well In Vermilion Parish, Louisiana, Audrey Lynne Orndorff

OES Theses and Dissertations

In the subsurface of Vermilion Parish, Louisiana, sediments from the Anahuac Formation in the #1 J. W. Steen well are assigned an Upper Oligocene-Lower Miocene age based on planktonic foraminifera. Previous age determinations for sediments from this formation elsewhere range from Middle to Late Oligocene based on the presence of larger foraminifera contained within these strata. Planktonic foraminifera in Anahuac formation sediments in the #1 J. W. Steen well permit their assignment to an established worldwide zonation scheme and indicate that the age ranges from the Globorotalia kugleri Interval Zone (Upper Oligocene) to the Catapsydrax dissimilis Zone (Lower Miocene). Benthic …

Seasonal Phytoplankton Assemblages In The Nansemond River, Virginia, Cindy Eleanor Shomers

Biological Sciences Theses & Dissertations

A monthly phytoplankton study was conducted on the Nansemond River from November 1984 to October 1985. Light microscopy was utilized to characterize the resident populations, their cell concentrations and to provide a general comparison to other regional studies of river systems considered more polluted. The results divided the flora into two major categories. The first group was a pico-nanoplankton component composed of Cyanobacteria and Chlorophycean cells 1-10 um in diameter. The second group was a microplankton assemblage of Bacillariophyceae, Dinophyceae, Cryptophyceae, Chlorophyceae, Cyanobacteria and Euglenophyceae. The pico-nanoplankton had a unimodal abundance pattern with peak concentrations occurring in spring. The microplankton …

Self-Labeling Of Body Weight: Relationships With Body Image Eating Behaviors And Well-Being, Karen Hicks

Psychology Theses & Dissertations

This research consists of two studies. Study I compares normal-weight subjects self-labeled as overweight (NSLO, 99 females, 65 males) and weight matched subjects self-labeled as normal weight (NSLN, 99 females, 65 males), and examined the differences between these groups in their body-image, eating behaviors, and well-being. Results indicated NSLO versus NSLN subjects felt more body-image dissatisfaction, less attractive, fit, and healthy, were more likely to report binge eating and dietary restriction to lose weight, and reported poorer psychosocial well-being. Study 2 compared self-labeled overweight subjects who were overweight (OSLO, 56 females, 53 males) versus normal weight subjects self-labeled as overweight …

Survey Of Attitudes Of Licensed Dental Hygienists Toward Continuing Education In A State With Mandatory Continuing Education Versus A State Without Mandatory Continuing Education, Katharine Reeves Behroozi

Dental Hygiene Theses & Dissertations

The purpose of this research was to compare attitudes of licensed dental hygienists toward continuing education (CE) in two states: Kentucky, a state with mandatory continuing education (MCE) as a requirement for dental hygiene re-licensure and Virginia, a state without MCE for dental hygiene re-licensure. A self-designed, 28-item instrument, Continuing Education Attitudinal Questionnaire, was mailed to a stratified and random sample of 400 licensed dental hygienists in Kentucky and Virginia. Employing the chi-square test for independence, analysis of results revealed that Kentucky participants responded more affirmatively than Virginia participants to attitudinal statements regarding CE, particularly in areas of MCE, benefits …

The Application Of The Peabody Developmental Motor Scales Administered To 20 Developmentally Delayed Children, Jan H. Henderson

Community & Environmental Health Theses & Dissertations

The purpose of this research was to provide physical and occupational therapists with empirical data and clinical information that will enable them to better understand and utilize the Peabody Developmental Motor Scales (PDMS) in the assessment of children who potentially may need physical and/or occupational therapy. The PDMS was administered to 20 developmentally delayed children between the ages of 24 and 83 months, who were receiving both physical and occupational therapy in the Chesapeake Public School System. The PDMS was also administered to 20 normal subjects between the ages of 24 and 77 months that were volunteers from the PTA …

Economic Considerations For Artificial Reef Development In Coastal Virginia, Dean Thomas Devereaux

OES Theses and Dissertations

The contingent valuation method, recommended by the U. S. Water Resources Council, was used to estimate the economic value of sport fishing and diving at the Chesapeake Light Tower Artificial Reef. The study is based on a random sample of 170 anglers and 33 divers who participated in telephone, personell and mail-in surveys in 1985 and 1986.

The average user value (consumer surplus) was $21.13, $110,75, and $13.30 for head boat anglers, private boat anglers and sport divers, respectively, who claimed to have used the reef in 1985. Variation in consumer surplus was statistically affected by trip expense, distance from …

Holocene Geology And Migration Of A Low-Profile Barrier Island System, Metompkin Island, Virginia, Mark R. Byrnes

OES Theses and Dissertations

Analysis of historical shoreline position, cross-island profile change, and stratigraphic data provided a shoreline response model for low-profile barrier island systems. Historical shoreline data illustrates continuous, shore-parallel retreat between 1852 and 1957, at which time the island narrowed to a width of approximately 200 m. Between 1957 and 1981, ephemeral inlet breaching along southern Metompkin Island disrupted longshore sediment transport, increased the rate of shoreline recession, and resulted in differential rates of retreat associated with an abrupt break in backbarrier morphology. By 1981, a 400 m offset had formed at a position midway along Metompkin Island, suggesting that ephemeral inlet …

Theory Of Alpha-Nucleus Collisions At High Energies, Francis A. Cucinotta

Physics Theses & Dissertations

The interaction of high energy alpha particles with atomic nuclei is considered using multiple scattering theories. Semi-classical solutions to coupled-channel equations derived from Watson's form of the nucleus-nucleus multiple scattering series are shown to be equivalent to the Glauber multiple scattering series. Second-order solutions for the elastic amplitude are developed and used to study the effects of short-range correlations in nuclear scattering. The Jastrow method is used to model the two-particle density for ⁴He and to construct one and two particle form factors. Excellent agreement with experimental data for angular distributions, and total and reaction cross sections is found. …

Comparative Analysis Of The Effects Of Visual And Auditory Stimuli On Avian Mobbing Behavior, C. Ray Chandler, Robert K. Rose

Biological Sciences Faculty Publications

Both visual and auditory stimuli elicit avian mobbing behavior, but there is little comparative information on their isolated and additive effects. Using three combinations of two experimental stimuli (mount and tape of an Eastern Screech-Owl, Otus asio) we tested the effects of stimuli on the frequency, intensity, and duration of avian mobbing behavior. Of 169 mount-only trials, only 11 (6.5%) were successful in attracting birds. Tape-only (n = 169) and mount-and-tape (n = 170) were equally successful in attracting birds (approximately 85% of all trials), but mount-and-tape trials were more likely to initiate mobbing behavior. Birds responding …

Calculations Of Three-Dimensional Transonic Flows Using The Implicit Formulation Of The Isenthalpic Euler Equations With Flux Vector Splitting, Frank E. Cannizzaro

Mechanical & Aerospace Engineering Theses & Dissertations

A numerical method for solving three-dimensional transonic flows using the isenthalpic formulation of the Euler equations is developed. The method uses van Leer's flux vector splitting to solve the implicit formulation of the governing equations, which are applied to a cell centered finite-volume scheme. A three factor spatial approximate factorization is implemented in solving the implicit part of the governing equations. Time marching to a steady state solution requires short computational times due to the relative efficiency of the basic method. Computational times are further reduced by the implementation of the multigrid acceleration technique, which provided converged solutions in approximately …

Die Geburt Der Tragoedie, Joseph Barnett Metzler Iii

Institute for the Humanities Theses

Die Geburt der Tragodie is a full-length opera about the philosopher Friedrich Nietzsche during the period of his insanity. The work is in three acts and spans a total of two and half hours. It is scored for string quartet, two keyboardists, two trumpets, two percussionists, and four singers. One of the main actors also plays solo piano, another sings a solo soprano part. All the rest of the parts are spoken. Volume one contains the text, performance notes, and a brief introduction. Volume two contains the music.

Callianassa Trilobata (Crustacea: Thalassinidea) Influences Abundance Of Meiofauna And Biomass, Composition, And Physiologic State Of Microbial Communities Within Its Burrow, Fred C. Dobbs, James B. Guckert

OES Faculty Publications

Biochemical and traditional methods were used to determine the influence of Callianassa trilobata on microbiological and meiofaunal communities within its large, highly consolidated burrow. Sediment was collected from the lining of the shrimp's burrow, the burrow matrix, and ambient, subsurface sediment. The lining and matrix were composed of poorly sorted, fine-grained material compared to sandy ambient sediment. Meiofauna, predominantly nematodes, were most abundant in ambient sediment, not in the burrow as has been found for other species of macrofauna. Concentrations of chlorophyll a were very high in the lining, consistent with the suggestion that C. trilobata lines its burrow walls …

Microbial Food Resources Of The Macrofaunal-Deposit Feeder Ptychodera Bahamensis (Hemichordata: Enteropneusta), Fred C. Dobbs, James B. Guckert

OES Faculty Publications

Biochemical and traditional analyses were used to characterize the microbial food resources and digestive efficiency of Ptychodera bahamensis, an enteropneust hemichordate. Sediment was collected from freshly extruded fecal casts and adjacent feeding depressions. There were no significant differences between casts and depressions in median grain size, percent silt-clay, density of total meiofauna and of nematodes, and concentrations of chlorophyll a and phaeophytin. Nematodes in casts had a median diameter greater than those in depressions. Measures of total, viable microbial biomass were 30% (total phospholipid, ester-linked fatty acids) and 49% (extractible phospholipid phosphate) lower in casts. Concentrations of 33 fatty …

An Evaluation Of Injury Incidence And Typology In Industry, Shirlee Ann Brooks

Community & Environmental Health Theses & Dissertations

In a retrospective study, 84 subjects treated for industrial injuries at one urgent care center during one calendar year were analyzed. The parameters evaluated were type of industry engaged in, type of injury sustained, and body part affected by the injury. All subjects were categorized within these parameters. Statistical analysis was performed by frequency distribution and Chi Square. Results obtained showed a statistically significant difference in distribution of various types of injuries that affected different body parts. It also revealed a significant difference in the distribution of types of injuries incurred by workers in different types of industry. It failed, …

The Influence Of Nursing Experience And Education On Nurses Inferences Of Patients' Suffering, Patricia A. Coots

Ellmer School of Nursing Theses & Dissertations

A primary dimension of nursing is caring tor patients who suffer. This study examined the inferences made about patients' suffering oy 65 registered nurses employed in acute care health facilities. Utilizing The standard Measure of Inferences of Suffering Questionnaire. the purpose of the study was to explore the influence of nursing education and experience on the degree of pain and psychological distress inferred by the nurses. Analysis of Covariance was used to test for group differences on the basis of nursing education when number of months of nursing experience was controlled. Although nursing education did not influence nurses' inferences of …

Development And Testing Of The Stress Adaptation Scale For Parents With Chronically Ill Children (Sasp), Carolyn M. Rutledge

Ellmer School of Nursing Theses & Dissertations

This research study consisted of four phases used to develop and test the Stress Adaptation Scale for Parents with Chronically Ill Children (ASP). The first phase dealt with developing the items on the SASP from a review of the literature and the researcher's professional experience. The SASP was then divided into the six categories of health care, social, personal, familial, financial, and spiritual. In phase II, content validity was evaluated by a panel of experts. In phase III, stability over time and face validity was demonstrated using 26 parents of chronically ill children. The SASP achieved a Pearson's r=.85 with …

Use Of 52Cr For The Quantitative Determination Of Red Cell Volume, Claude Michael Hanbury

Chemistry & Biochemistry Theses & Dissertations

Chromium-52 has recently been suggested for use as a new agent to label red cells for the in vivo quantitation of red cell volume (1). In this paper, the development and validation of a routine ⁵²cr labeling procedure is described.

The accuracy, precision, and detection limits of chromium analysis by Zeeman effect atomic absorption spectroscopy was evaluated in the concentration range of 1 - 10 ug Cr/L.

Red cell chromium uptake was evaluated as a function of time, temperature, and concentration. Red cells labeled with a 2.5 mg/L chromium solution for 30 minutes at room temperature exhibited optimal label …

A Simulation Study Of A Space-Borne Optical Disk Mass Memory System, Kenny G. Chen

Electrical & Computer Engineering Theses & Dissertations

Issues concerning space-borne applications of an optical disk mass memory system (ODMMS) are investigated through computer simulation. The simulation model is developed according to a current description of the ODMMS with certain application constraints. The results are examined in terms of system modularity, multi-user data rate buffering, disk module access, and read/write file management. The conditions and requirements for future disk controller designs are indicated in the simulation results.

Dual Task Performance: The Effects Of Task Emphasis And Ear Of Input, Pamela R. Jordan

Psychology Theses & Dissertations

This experiment explored the lateralization of the processing of spatial and verbal information during dual-tasks. This study also investigated the relationship between right ear advantage and spatial ability, degree of handedness, and degree of familial handedness. Thirty-two male subjects performed a spatial rotation task and a dichotic listening task. During half of the dual tasks, subjects concentrated on both tasks equally. During the other half of the dual trials, 16 subjects emphasized the spatial processing task and 16 subjects emphasized the dichotic listening task. The results of this experiment do not support either the independent-hemispheric resources or the task-hemispheric integrity …