Digital Commons Network^™

Production Of A Population Of The Stout Razor Clam (Tagelus Plebeius Solander) In A Virginia Estuary, Mark James Grussendorf

OES Theses and Dissertations

The annual net secondary production of the stout razor clam, Tagelous plebeius, was estimated at three sites on an intertidal sand flat at Lynnhaven Inlet, Virginia. Samples were taken at six week intervals for one year. The range of net production (P), mean annual biomass (B), and P/B ratios was 18.3-28.7 g m^-2year^-1, 27.2-53.3 g m^-2, and 0.54-0.67, respectively. The total biomass did not show significant seasonal variation though differences between sites were significant. Production varied temporally but was not significantly different between sites.

Menstrual Cycle And Training Effects On Physical Work Capacity, Sarah Jane Miller

Psychology Theses & Dissertations

The present study examined the effects of women's menstrual cycles on their capacity to perform physical work. Most of the studies of the effects of the menstrual cycle on performance have reported no differences; however, the lack of demonstrated effects could be attributed, in part, to the inability of experimenters to specify the critical phases of the menstrual cycle. The length of the menstrual cycle (between and within subjects) is more variable than commonly expected and this fact, in combination with the inadequacy of current predictors of phase onset, tends to produce error variability in the menstrual cycle independent variable. …

Requirements For Textile Product Knowledge In Marketing And Fashion Merchandising Curricula, Carolyn H. Josey

OTS Master's Level Projects & Papers

To determine what textile product knowledge must be taught in Marketing and Fashion Merchandising curricula in order to prepare graduating students for entry level jobs in apparel and accessories merchandising.

Sufficiency Of A Numerical Downstream Continuation, Charlie H. Cooke

Mathematics & Statistics Faculty Publications

(First paragraph) Customarily one does not impose n-th order boundary conditions on the solution of initial/boundary value problems whose characterizing partial differential equations are also n-th order. However, conjecture that such problems are not well-posed, or that a solution might not exist, is not always justified [l]. Perhaps a physically more natural example is provided by problems of computational fluid dynamics. Here boundary conditions which correctly should be applied at an infinite distance downstream from the region of interest are for computational convenience often applied at a finite location [2]. Results of numerical experimentation on viscous flows governed by …

The Comparative Ecology Of Two Populations Of The Troglobitic Isopod Crustacean Lirceus Usdagalun (Asellidae), James Alexander Estes

Biological Sciences Theses & Dissertations

Aquatic communities of two caves in Lee Co., Virginia, were compared, and an examination was made of the life history phenomena of the troglobitic isopod Lirceus usdagalun. Measurements of physical and biological parameters were made in Thompson Cedar Cave and Gallohan Cave No. l. A contagious distribution was exhibited by populations of L. usdagalun in both caves and also by the population of another troglobitic isopod, Caecidotea recurvata, in Gallohan Cave No. 1. This distribution was attributed to aggregations of individuals which were considered to occur in areas of preference or optimal habitat patches. Lirceus usdagalun exhibited a …

A Potential Macroregulatory Mechanism For Growth Regulation In Neurospora Crassa, Martha Mooney

Biological Sciences Theses & Dissertations

Neurospora produces a phase specific, cationic mucopolysaccharide composed primarily of galactosamine (GAG-MP) which becomes part of the cell wall and is later secreted into the media. Its appearance coincides with the onset of the restricted phase of growth and causes efflux of small molecular weight metabolites when incubated with conidial cells. This activity may be a product of electrostatic interactions of the GAG-MP with the conidial plasma membrane. The activity is blocked by acetylation of the primary amines on the molecule, digestion by enzymes that hydrolyze carbohydrate linkages and the inclusion of NaCl (lM) in the GAG-MP/conidia reaction mixture. The …

Note: On Summability And Positive Linear Operators, J. J. Swetits

Mathematics & Statistics Faculty Publications

Quantitative estimates for approximation by positive linear operators are obtained with the use of a summability method which includes both convergence and almost convergence.

New Student Record, 1979, Old Dominion University

University Yearbooks

1979 issue of the New Student Record of Old Dominion University

The Effectiveness Of The Exploratory Distributive Education Course (De 8) On Student Choice Of Fundamentals Of Distribution (De 10) At Abingdon High School, Paula J. Hill

OTS Master's Level Projects & Papers

Since the exploratory courses were intended to provide students a broader outlook for making decisions concerning their occupational preparation, it was necessary to determine what effect the DE 8 course had on student selection of DE 10 at Abingdon High School. Therefore, it was proposed that the exploratory DE 8 course had no effect on student choice in selecting Fundamentals of Distribution (DE 10) as a tenth grade elective course.

A Study Of The Identification And Validation Of Competency-Based Tasks For The Power And Transportation Area Of Industrial Arts In The State Of Virginia, Robert P. Quiqley

OTS Master's Level Projects & Papers

Since a directive has been issued and a deadline for implementation established, the wheels of the competency-based educational movement are now set in motion. The problem of this study was to identify and validate competencies for the area of power and transportation needed by industrial arts teachers in Virginia.

A Technical Study Evaluating The Three Major Brands Of Spark Plugs, Kenneth J. Brumley

OTS Master's Level Projects & Papers

In this research study the researcher will prove which spark plugs will perform the best in all operating conditions. These conditions are structural strength, anti-fouling characteristics, carbon tracking resistance, extended operational performance, high temperatures, high pressures, high voltage, seal ability, combustion performance, and the ability to resist detonation and pre-ignition.

A Compilation Of Tasks For Competency-Based Instruction In Fiberglass Technology For Industrial Arts Education, James Roy White

OTS Master's Level Projects & Papers

The purpose of this study was to identify the tasks needed to produce a fiberglass product from a preconstructed mold and list these tasks in a form that can be measured in behavioral terms.

The Identification And Validation Of The Minimum Competencies For Woodworking I And Woodworking Ii Curriculums In Virginia, Lawrence W. Thrasher

OTS Master's Level Projects & Papers

The following objectives were followed as guides. The researcher would: 1. Validate a prepared list of identified woodworking competency tasks by means of a survey submitted to the advisory committee; 2. Develop those competency tasks selected by the advisory committee into competency based instructional units; 3. Validate the prepared list of developed competency based instructional units by means of a survey submitted to the advisory committee; 4. Prepare and submit to the research director a list of the validated competency based instruction units.

Stable Equilibrium Statistical States For Spheromaks, George Vahala, Linda L. Vahala

Electrical & Computer Engineering Faculty Publications

Incompressible nondissipative magnetohydrodynamic turbulence is treated for spherical systems. From the absolute equilibrium expectation values of the fields one can investigate those initially quiescent states for which no large mean square velocity will develop. This stable state is force-free and gives rise to the Hill vortex structure for the magnetic flux surfaces.

Animal-Sediment Relationship Study Of The Western Branch Of The Lynnhaven River, Charles Perry Seymour

Biological Sciences Theses & Dissertations

The animal-sediment relationships of the marine benthic infauna of an estuarine river system, Lynnhaven River, Virginia Beach, Virginia, were studied at six sites, sampled bimonthly for one year. Six species were found to dominate all of the sampling periods and sites for the year. The greatest number of individuals, biomass, and species were found at the sand sites. Deposit feeders were recorded in greater number than suspension feeders at both the sand and the mud sites.

Cluster and nodal analyses were successful in demonstrating animal-sediment relationships for the intertidal regions of the river system.

Measuring Empathy In Female Hygiene Students, Patricia R. Mason

Dental Hygiene Theses & Dissertations

The aim of this investigation was to assess empathy in female dental hygiene admissions candidates and first and second year dental hygiene students. A convenience sample of subjects from Old Dominion University, Norfolk, Virginia; the University of Pennsylvania, Philadelphia, Pennsylvania; and Idaho State University, Pocatello, Idaho, were included within the study.

Data were organized according to a 3 x 3 factorial research design with educational setting and student status as the non-manipulated independent variables. The dependent variable, empathy, was measured by the Hogan Empathy Scale.

Three group, two-way analysis of variance yielded no statistically significant empathy differences among levels of …

Additional Comments On Reproductive Strategies And Population Fluctuations In Microtine Rodents, Michael S. Gaines, William M. Schaffer, Robert K. Rose

Biological Sciences Faculty Publications

Recently, Schaffer and Tamarin (1973) proposed a model relating changes in reproductive effort (RE) to fluctuating densities in microtine rodents (lemmings and voles). They assumed (and presented data supporting this assumption) that the major effect of increased crowding would be a reduction in survival among prereproductives, thereby lowering the effective fecundity (Schaffer and Rosenzweig 1977) of their parents. As a consequence, Schaffer and Tamarin argued that the optimal reproductive expenditure, E(N), should decline with increasing population size, N. They also deduced the shape of the zero-growth isocline, N*(E), for differing levels of RE and plotted both E(N) and N*(E) on …

Alkalinity And Ph In The Southern Chesapeake Bay And The James River Estuary, George T. F. Wong

OES Faculty Publications

The ranges of alkalinity and pH in the southern Chesapeake Bay and the James River estuary were 2.25 meq·liter⁻¹ at 32‰ to

Life Goals Of Five Dental Hygiene Groups In Three Educational Settings, Kathleen Olivia Hodges

Dental Hygiene Theses & Dissertations

This study investigated life goals of dental hygiene students and 1978., 1976, 1975, and 1974 graduates in three different educational settings.

The California Life Goals Evaluation Schedule was used to measure life goals of dental hygienists attending, or who had attended, Cuyahoga Community College· in Ohio, Idaho State University, and Old Dominion University in Virginia.

An ex post facto 5x3 research design was used. Year of graduation and educational setting were the nonmanipulated independent variables; ten scores on the California Life Goals Evaluation Schedule were the dependent variables; and age was used as a covariant.

Two-way multivariant analysis yielded no …

Effect Of Precursor Heating On Radiating And Chemically Reacting Viscous Flow Around A Jovian Entry Body, Kuo Yen Szema

Mechanical & Aerospace Engineering Theses & Dissertations

The influence of changes in the precursor region flow properties (resulting from absorption of the radiation from the shock layer) on the entire shock layer flow phenomena around a Jovian entry body is investigated under physically realistic conditions. In the precursor region, the flow is considered to be inviscid and the variations in flow properties are determined by employing the small perturbation technique as well as the thin layer approximation. The flow in the shock layer is assumed to be steady, axisymmetric and viscous. The analysis is carried out by considering both the chemical equilibrium and nonequilibrium composition of the …

Inviscid Two-Dimensional Vortex-Panel Method For Calculating The Pressure Distribution Over Noncircular Cylinders At Various Flow Incidence Angles, Sophia Kokkinos Ashley

Mechanical & Aerospace Engineering Theses & Dissertations

A method. has been implemented to calculate the potential flow pressure distribution over noncircular cylinders at various flow incidence angles. The inviscid, solution has been obtained by replacing the surface of a noncircular cylinder with a vortex sheet. The surface has been approximated by a number of flat panels. Each vortex panel has been assumed to have a constant vorticity, and the condition of no-circulation applied.. Solutions yield the local tangential velocity and pressure coefficient at each point.

The accuracy of the method has 'been established through comparison of the predicted results with existing exact theoretical results.

Comparisons of the …

Faust In His Study: The Paradox Of Visual Representations And Poetic Possibilities, Donna Ramsey

Institute for the Humanities Theses

The Faust theme has inspired individuals to creative endeavors over the years. While many of the resulting literary works are widely recognized and highly valued, few of the pictorial efforts have been similarly acknowledged. This investigation treats this apparent paradox as it applies to the soliloquy in the first scene of Part I of Goethe's poetic drama. The first part of the study compares the written word with its graphic interpretation, utilizing twenty-seven portrayals of Faust in his Study. The second section traces the iconography of the scene in a broader context, using twenty-eight prototypes which correspond to the depictions. …

Spring Phytoplankton Composition And Distribution In Coastal Waters Between Nova Scotia And The Chesapeake Bay, Larry William Neal

OES Theses and Dissertations

This investigation was directed toward satisfying a recognized lack of informat on regarding phytoplankton composition and density in shelf waters between Nova Scotia and the Chesapeake Bay. A sedimentation technique was used in determining the phytoplankton composition of 99 samples collected between 2 March and 3 April 1971. Chlorophyll-a samples collected concurrently were analyzed fluorometrically. Simple correlation analyses were utilized in describing distributional patterns of phytoplankton density and chlorophyll-a concentration with respect to water temperature, salinity, density, depth, distance from shore and latitude. Analysis of variance was employed in assessing regional differences in phytoplankton density and chlorophyll-a.

The phytoplankton flora …

The History Of Baseball At Old Dominion University, Anthony M. Zontini

Human Movement Studies & Special Education Theses & Dissertations

No abstract

The Distribution Of Several Metals And Cation Exchange Capacity In Sediment Fractions From An Artificial And Natural Marsh, James River, Virginia, William Nivens

OES Theses and Dissertations

In order to examine the mechanisms by which Fe, Mn, Ca, Zn, Cu, Ni and Pb are bound in sediments, a sequential selective extraction procedure was employed on sediment samples collected at an experimental dredge disposal marsh and a neighboring natural marsh located near Windmill Point, James River, Va. The metal concentrations were determined in six phases, interstitial water, exchangeable, easily reducible (oxides of Mn), organic, moderately, reducible (oxides of Fe), and residual fractions. In addition, the cation exchange capacity (CEC) of the sediments was determined as well as the actual role of organics and colloidal iron coatings as they …

Mercury, Copper, And Zinc In Selected Ichthyofauna Of Lower Chesapeake Bay And Hampton Roads, Virginia, W. Bruce Aitenhead

OES Theses and Dissertations

Anchovys, croaker, spat, summer flounder and hogchokers were collected monthly to seasonally from November 1972 to October 1973 at three locations in the southern Chesapeake Bay region of Virginia.

The concentrations of mercury, copper and zinc were determined by atomic absorption spectrophotometry in whole fishes. Metal concentration varied with species and location. Anchovys had the highest mean concentrations of mercury and zinc while hog- chokers had the highest mean copper concentration. Mercury levels exceeding O.5 ppm were observed in species from all three loca- tions, but maximum heavy metal concentrations per species were highest in Craney Island fishes.

Temporal variations …

Values Of Dental Hygienists In Three Different Occupational Settings, Adele Cereghino Koot

Dental Hygiene Theses & Dissertations

This study investigated values of dental hygienists in three occupational settings: private practice, community practice, and higher education.

The Allport, Vernon, Lindzey Study of Values was used to measure values of all licensed dental hygienists in North Carolina employed in one of the three occupational settings.

An ex post facto 3x3x3x4x4 factorial research design was used. Occupational setting, age, year of graduation, educational level, and length of time in present position were the non-manipulated independent variables; and the Allport, Vernon, Lindzey Study of Values scores were used as dependent variables. Five-way analysis of variance revealed no significant value differences among …

Conservation According To The Pure Theory Of Exhaustible Resources, George Lymbouris

Economics Theses & Dissertations

The objective of this thesis is to develop a theory for defining optimal conservation and applying definition to the prevailing rate of domestic petroleum production. Optimal conservation is defined as action designed to achieve or to maintain, from the point of view of society as a whole, the maximum present value of natural resources (or of a natural resource). The proper "action" is defined according to the pure theory of exhaustible resources. The literature survey is a chronological series of articles concerning this theory.

Through building a model which shows that optimal conservation occurs when the marginal internal rate of …

The Photosynthetic Action Spectra Of The Phytoplankton And Their Role In Governing Spatial And Temporal Distribution: A Numerical Modeling Approach, William Morrow Willis

OES Theses and Dissertations

In the present study a numerical modeling approach is employed to examine the role of division spedific differences in photosynthetic action spectra in governing the relative size of diatom and dinoflagellate carbon synthesis along various marine light regime gradients. A radiative transfer model taking into account both Rayleigh and Mie atmospheric optical properties is employed to define the light regime incident on the sea surface. The hydrospheric light regime is defined by an exponential decay model with a correction for diffuse back scatter. Taken together, the atmospheric and hydrospheric models define the spectral composition and intensity of light in the …

Analysis Of Moisture Absorption And Diffusion In Fiber Reinforced Polymeric Resin-Matrix Composite Materials, Stephen Stern Tompkins

Mechanical & Aerospace Engineering Theses & Dissertations

The diffusion of moisture through fiber reinforced polymeric-matrix composite materials has been studied analytically. The diffusion in the orthotropic, nonhomogeneous material was modeled, in detail, with a two-dimensional transient diffusion analysis. An effective diffusivity for the composite was determined in terms of the fiber volume fraction and the resin diffusivity. This effective diffusivity is in better agreement with recent data than those previously determined using less complex models.

The influence of both material and environmental parameters on the moisture content of the composite was determined analytically. Predicted moisture contents were compared over a wide range of values for emittance, solar …