Digital Commons Network^™

Structural Studies Of Preimplantation Rabbit Embryos Using Ftir Atr, Amy R. Moler-Booth

Chemistry & Biochemistry Theses & Dissertations

FTIR was used in conjunction with a surface selective technique, known as attenuated total reflectance (ATR), to study the infrared spectra of preimplantation rabbit embryos. The rabbit embryos ranged in aged from 3 to 6 days. Since an embryo is mostly water, deuteration of the embryo was necessary to eliminate the intense water background present in the mid-infrared region. A set of spectral standards were tested, in order to identify the bands seen in embryo spectra. By analyzing and comparing the spectra from 3, 4, 5 and 6 day embryos, differences could be noted. In particular, bands defined as Amide …

Filtration Ingestion And Assimilation Rates Of The Mysid Shrimp Neomysis Americana Smith, Fed Three Food Sources, Robert W. Grabb

OES Theses and Dissertations

Laboratory grazing and assimilation experiments were conducted on the mysid shrimp Neomysis americana in an attempt to assess the suitability of three potential food sources. It was hypothesized that the smaller size classes were primarily herbivores, not becoming omnivorous until attaining lengths of approximately 5-6 mm. Four size classes of mysids from the summer generation, juveniles, immature, adult males, and adult ovigerous females were each fed three concentrations of Artemia salina nauplii, the rotifer Brachionus plicatilis, and the diatom Coscinodiscus lineatus. The mean lengths of the size classes utilized, plus or minus one standard deviation, were 2.5 …

Distribution Of The Dinoflagellate Symbiosis In Astragia Danae As Affected By Light Attenuation, Michael Perry Weston

OES Theses and Dissertations

Spatial zonation of symbiotic and aposymbiotic forms of the temperate coral Astrangia danae provides evidence that light attenuation is an important factor in the distribution of this animal. At four locations in the lower Chesapeake Bay and adjacent offshore waters, symbiotic colonies were observed only in well illuminated surface waters, while aposymbiotic colonies were observed in less illuminated deeper waters. A transition zone exists in which both colony types are found. Colonies on substrates forming a plane parallel to the sea-surface receive a greater radiant flux than colonies on vertical substrates. This extends the depth range of symbiotic colonies located …

The Carter Administrative Elite: A Background Analysis, Susan Adomaitis Armstrong

Institute for the Humanities Theses

This study is an inter-disciplinary analysis of the backgrounds of the Carter administrative elite. Various theories of political science, public administration, and ethics are presented in relation to Jimmy Carter's appointees. A background composite is presented of the elites' education, career before government service, age, sex, and geographic region of birth and socialization. Information about the elites was obtained from biographical listings, and was stored and processed by an electronic data processing system.

The Carter administrative elite has included persons who have been named to positions that do not maximize their experiences and qualifications in the most appropriate manner. This …

Old Dominion University: A Half Century Of Service, James R. Sweeney

History Faculty Bookshelf

Dr. James R. Sweeney has written an informative account of the university's first half-century. It is a history of growth from a small two-year branch of the College of William and Mary to a state-supported university that has gained its own national reputation.

[From the "Introduction," by Alfred B. Rollins Jr, Aug. 14, 1980]

Ocean Chlorophyll Studies From A U-2 Aircraft Platform, Hongsuk H. Kim, Charles R. Mcclain, Lamdin R. Blaine, William D. Hart, Larry P. Atkinson, James A. Yoder

CCPO Publications

Chlorophyll gradient maps of large ocean areas were generated from U-2/OCS data obtained over test sites in the Pacific and the Atlantic Oceans. The delineation of oceanic features using the upward radiant intensity relies on an analysis method which presupposes that radiation backscattered from the atmosphere and the ocean surface can be properly modeled by using a measurement made at 778 nm. The calculation of atmospheric radiance was performed by using a method developed by J.V. Dave. An estimation of the chlorophyll concentration is performed by properly ratioing radiances measured at 472 and 548 nm after removing the atmospheric effects. …

A Study Of The Benefits That Audio-Visuals Have On High School Crafts Classes, F. Evans Cochran

OTS Master's Level Projects & Papers

The problem of this study was to ascertain the benefit that a slide-tape series had on wheel throwing in an Industrial Crafts class. The benefit of using visuals in wheel throwing and other related areas will be determined through the data provided in this study.

The Determination Of The Compatibility Between The Reasons For Attending And The Career Goals Of Secondary Students At The Norfolk Technical-Vocational Center, Judith A. Wiltshire

OTS Master's Level Projects & Papers

The purpose of this study was to answer the following questions: 1. Why do students elect the programs at NTVC? 2. What do these students intend to do after high school graduation?

A Study To Determine If Predictive Relationships Exist Between First Month Apprentice Mathematic Failures And Unsuccessful Completion Of The Three Year Norshipco Apprentice Program, Donald Allan Kilmer

OTS Master's Level Projects & Papers

The problem of this study was to determine if a correlation exists between first month apprentice mathematic failures and unsuccessful completion of the four months of related instruction in the three year apprentice program.

A Study Of Methods And Strategies Utilized By Supervisors And Teachers For Revision, Update And Modernization Of Industrial Arts Subject Matter In Tidewater, Virginia Public Schools Systems, Richard L. Hicks

OTS Master's Level Projects & Papers

In order to consider what subject matter could or should be included into an Industrial Arts curriculum for modernization, the following questions should provide direction for planning: 1. Who should be included on a curriculum committee? 2. Who should provide the curriculum committee with leadership and dominate direction? 3. Who should be responsible for setting goals for curriculum review or revision? 4. What strategies are employed by a curriculum committee to include and exclude subject material? Should the Industrial Arts subject area include a technical advisory committee?

The Prospect Of The Introduction Of The Virginia Industrial Arts Curriculum, Exploring Technology Into The Norfolk Public School System, Christopher A. Canty

OTS Master's Level Projects & Papers

The following research questions were posed to build such a reference point: 1. Did the physical plants of each junior high school lend theirselves to the realistic teaching of the Exploring Technology curriculum? 2. wee the present instructors of industrial arts qualified to teach the Exploring Technology program? 3. Were the attitudes and feelings of the present teacher personnel conducive to the teaching of the Exploring Technology program? 4. How could the Exploring Technology program be implemented?

A Study To Determine The Acceptance By Potential Employers Of A Cooperative Education Program For Gifted And Talented Students In Newport News Public Schools, Deborah Smith Buchanan

OTS Master's Level Projects & Papers

In order to plan for this proposed cooperative program, it was necessary to gain specific information from the business community on the Peninsula. The goals of this study were: 1. To determine the job placements for gifted and talented students that would be available on the peninsula; 2. To determine the variety of occupational areas that would provide assistance to the program; 3. To determine the job-entry skills that prospective employers would require of a student in the program.

A Study To Determine The Relationship Between Speed Building With And Without Error Penalties In Developing Straight-Copy Typewriting Speed, Jerusha Moseley Coleman

OTS Master's Level Projects & Papers

The purpose of this study as to determine if there is a relationship between speed building with and without error penalties in developing straight-copy typewriting speed in the first semester of beginning typewriting. The general hypothesis is that there is no significant difference.

An Analysis Of Alternative Students' Attitudes Enrolled In "Exploring The Construction Industry" At The Virginia Beach Career Development Center, Martin M. Fay

OTS Master's Level Projects & Papers

The problem of this study was to analyze the alternative students enrolled in "Exploring the Construction Industry" at the Career Development Center. The study centered on improving the alternative students' self-reliance which include positive self-image, pride in one's work, increased exhibition of craftsmanship in both group and individual activities, and, above all, increased decision-making skills.

A Study To Determine The Relationship Between Grade Point Average And Job Success, Charlotte S. Slade

OTS Master's Level Projects & Papers

This study focused on the following questions: 1) Are grades predictors of job success? 2) Is there a significant difference in job success between students with an A average, students with a B average, and students with a C average? 3) In what aspects of their jobs are students most successful? Can these aspects relate to success in the classroom? 4) In what aspects of their jobs are students least successful? Can these also be predicted by grades?

A Note On The Degree Of Approximation With An Optimal, Discrete Polynomial, J. J. Swetits, B. Wood

Mathematics & Statistics Faculty Publications

A saturation theorem and an asymptotic theorem are proved for an optimal, discrete, positive algebraic polynomial operator. The operator is based on the Gauss-Legendre quadrature formula.

Luminescence In Slipped And Dislocation-Free Laser-Annealed Silicon, R.H. Uebbing, P. Wagner, H. Baumgart, H. J. Queisser

Electrical & Computer Engineering Faculty Publications

Photoluminescence of cw laser-annealed silicon shows a dramatic difference in electronic behavior of the reconstructed material depending upon either creation or suppression of dislocations. Beyond a critical exposure time slip appears, and the luminescence of these samples is dominated by dislocation-related defect levels.

Phytoplankton Studies Within The Virginia Barrier Islands I. Seasonal Study Of Phytoplankton In Goose Lake, Parramore Island, Harold G. Marshall

Biological Sciences Faculty Publications

The phytoplankton of Goose Lake, an oligohaline lake on Parramore Island, was studied for one year. The populations consisted primarily of ultraplankton and nanoplankton-sized forms with diatoms and chlorophyceans dominant most of the year. A general pattern of seasonally higher cell concentrations in early summer and fall was noted, with an unidentified ultraplankton-sized component prominent throughout the collection period. A list of 154 species is given.

An Algorithm For The Electromagnetic Scattering Due To An Axially Symmetric Body With An Impedance Boundary Condition, F. Stenger, M. Hagmann, J. Scheing

Computer Science Faculty Publications

Let B be a body in R³, and let S denote the boundary of B. The surface S is described by S = {(x, y, z): (x² + Y²)^½= ƒ(z), -1≤ z ≤ I}, where ƒ analytic function that is real and positive on (-1, 1) and ƒ(±1) = 0. An algorithm is described for computing the scattered field due to a plane wave incident field, under Leontovich boundary conditions. The Galerkin method of solution used here leads to a block diagonal matrix involving 2M …

Finite Element Model Of A Timoshenko Beam With Structural Damping, Louis Ablen Roussos

Mechanical & Aerospace Engineering Theses & Dissertations

A numerical integration technique, a modified version of the Newmark method, is applied to transient motion problems of systems with mass, stiffness, and small nonlinear damping. The nonlinearity is cast as a pseudo-force to avoid repeated recalculation and decomposition of the effective stiffness matrix; thus, the solution technique is dubbed the "pseudo-force Newmark method." Comparisons with exact and perturbation solutions in single-degree-of-freedom problems and with a Gear-method numerical solution in a cantilevered Timoshenko beam finite element problem show the solution technique to be efficient, accurate, and, thus, feasible provided the nonlinear damping is small. As a preliminary step into the …

The Association Of 5.8 S With 28s Ribosomal Rna, Nandita Banerjee

Chemistry & Biochemistry Theses & Dissertations

5.8S rRNA is a low molecular weight ribosomal RNA which is noncovalently bonded to the larger ribosomal subunit 28S rRNA; through its 3' end and through its 5' end. This interaction is an integral part of the ribosome, and plays an important role in the ribosome structure and function.

There is a high degree of homology between the 5.8S rRNA primary structures of rat, turtle and chicken. The base sequence of rat 5.8S rRNA differs only in one position from that of turtle and in three positions fr.om that of cl1.icken. Tl1ere is a single purine substitution at the 5' …

Aspects Of Larval Ecology Of Squilla Empusa (Crustacea, Stomatopoda) In Chesapeake Bay, Steven G. Morgan

OES Faculty Publications

Larvae of Squilla empusa were collected from the plankton and were laboratory-reared in 16 combinations of temperature and salinity to determine their tolerances. Larvae survived longer and molted more frequently when reared at 25%, and 20° or 25° C, which corresponds to the natural conditions of Chesapeake Bay when the larvae were collected.

A 2 year planktonic survey conducted in the lower region of the bay by the Virginia Institute of Marine Sciences was compared with a survey made at the bay mouth in 1976. The seasonal occurrence of Squilla empusa larvae extended from the last week of July until …

An Analysis Of Bathymetric Change In Lower Chesapeake Bay, John C. Ludwick

OES Faculty Publications

The purposes of the work-reported in this document are (a) to determine the magnitudes and patterns of water-depth changes in lower Chesapeake Bay within a control area centered on Thimble Shoal Channel; (b) to interpret these changes, insofar as possible, in terms of sediment movements and/or bed erosion and lateral shifting of large shoals and tidal current channels; and (c) to .deduce the relationship of these changes, insofar as possible, to changes in the Chesapeake Bay shoreline from Willoughby Spit to the area of Cape Henry. Virginia.

An Investigation Of Grading Procedures For Secondary School Physical Education Classes In Selected Virginia School Districts, Ellen V. Parker

Human Movement Studies & Special Education Theses & Dissertations

The purpose of this study was to investigate the grading pro­cedures used for secondary school physical education classes in selected Virginia school districts.

A questionnaire was sent to one hundred and sixty-one physical education teachers who were listed as members of the Virginia Association For Health, Physical Education and Recreation. One hundred and seventeen questionnaires (72.5 percent) were returned.

The authors of recent literature in grading practices point out that teachers base course grades on dressing out in gym uniform, skill, effort, participation, and written tests. The data gathered in this study reflect a similar situation in Virginia schools.

Effects …

Feeding Morphologies And Distribution Patterns Of Marine Cladocera In The Lower Chesapeake Bay, Sandra Layne Gilchrist

OES Theses and Dissertations

Temporal and spatial distributions of marine cladocera in the lower Chesapeake Bay estuary were observed over a year-long sampling period. The distributions of cladoceran species throughout the Bay were studied in relation to temperature and salinity. A survey of the species over the entire Bay is included to establish distribution patterns of the various species during a short time period.

Theoretical mathematical principles were used to predict feeding abilities of the Bay species. Mouthparts are described qualitatively and quantitatively to infer function. A mandibular index developed by Itoh (1970) was revised and employed in evaluating feeding methods interspecifically and interspecifically. …

The Spatial And Temporal Distribution Of Fish Eggs And Larvae In Hempstead Bay Estuary, Joseph Adelard Lessard

OES Theses and Dissertations

The ichthyoplankton of Hempstead Bay estuary was sampled from December 1972 to mid March 1974. Eleven stations were sampled by towing a 0.5 meter diameter plankton net. Eggs were most abundant during June and July with an average concentration calculated to be above 5,500/100m³. Egg densities were the lowest during the fall and winter. Larvae were most frequently taken from March through July with densities varying greatly among the samples. The eggs of Brevoortia tyrannus, Anchoa mitchilli, Tautoga onitis, Tautogolabrus adspersus, and Scophthalmus aguosus and the larvae of Menidia menidia, Ammodvtes hexapterus and Pseudopleuronectes americanus constituted most …

Franck Condon Factors And R-Centeroids For Six Diatomic Molecules, Patricia M. Fazio

Physics Theses & Dissertations

The Franck Condon factor is defined as the square of the overlap integral and is so named because of its ties with the Franck Condon Principle. The r-centroid is the internuclear separation associated with the electronic transition of the diatomic molecule. The physical meaning of these integrals is discussed. Two methods for construction of the wavefunctions are presented. Both methods employ the Morse Potential Energy function. The first method calculates the integrals using the analytic wavefunction of Morse and the second method has numerically constructed wavefunct!ons. The twelve transitions and six diatomic molecules studied include; B ²Σ+ to X …

Core Size, Pricing, And Cost Structure, William K. Edwards

Economics Theses & Dissertations

This thesis presents a proof of an inverse limit theorem of the core of an economy. The implication of the theorem is that a larger core can be obtained by the formation of coalitions. A large core contains multiple Pareto optimal allocations from which society may select in order to maximize its welfare. Furthermore, this paper places an emphasis on pricing schemes that guarantee a core allocation under increasing returns to scale. Two pricing models are introduced that guarantee a non-empty core under increasing returns to scale.

An Analysis Of The Strategies Employed In Recruiting Industrial Arts Majors By Industrial Arts Teacher Education Institutions In The United States, John F. Carr

OTS Master's Level Projects & Papers

The problem of this study was to conduct a national survey to identify and analyze the methods and strategies necessary to recruit students to the industrial arts teacher education program at Old Dominion University.

The Effects Of Proton Irradiation On The Absorption Of Multi Component Glasses, Marcia Frances Bartusiak

Physics Theses & Dissertations

Three Schott glasses typically used in space technology -­ LaK 21, KzFS N4, and LF 5 -- were irradiated with 85 MeV protons. Induced absorption spectra were determined for each glass after varying fluences of radiation. It was found that the spectra for each glass can be fitted with three Gaussian shaped bands in the near ultraviolet-visible region, while a fourth Gaussian characterizes the absorption edge. For doses up to 10⁷ rads, the dependence of the induced absorption a on total dose is accurately described by the saturating exponential function a(Φ)= a_s (1 - e-^{-b Φ} ) …