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Articles 9931 - 9960 of 10137
Full-Text Articles in Entire DC Network
The Development Of A Competency-Based Simulation Curriculum For Fashion Merchandising I In Virginia Beach Public Schools, Teresa Fary
OTS Master's Level Projects & Papers
The request was made by the City Supervisor of Distributive Education for Virginia Beach City Schools to undertake the task of establishing a simulated competency-based curriculum for Fashion Merchandising I in Virginia Beach City Schools.
The Cognitive Ability Requirements Of Vocational Education: A Role For Elementary Industrial Arts, E. Bryan Newsome
The Cognitive Ability Requirements Of Vocational Education: A Role For Elementary Industrial Arts, E. Bryan Newsome
OTS Master's Level Projects & Papers
The problem associated with substituting vocational education for general education is examined in three areas: 1. the vocational development patterns of American students; 2. the skills necessary for occupational success; 3. the skills required for vocational training.
A Comparative Study Of The Practices Followed By Selected Colleges And Universities In Placing Students With Previous Typewriting Experience In The Various Levels Of College Typewriting Instruction, Patricia Tynes Tompkins
A Comparative Study Of The Practices Followed By Selected Colleges And Universities In Placing Students With Previous Typewriting Experience In The Various Levels Of College Typewriting Instruction, Patricia Tynes Tompkins
OTS Master's Level Projects & Papers
The primary purpose of this research is to make a comparative study of the ways that selected colleges and universities in the Southern Business Education Association region handle the problem of placing students with prior typewriting instruction into the various levels of college typewriting instruction.
A Math Curriculum For Retail Buying (Ecide 306) Old Dominion University, Betty Bradshaw
A Math Curriculum For Retail Buying (Ecide 306) Old Dominion University, Betty Bradshaw
OTS Master's Level Projects & Papers
The problem was to determine what math skills should be taught in the Retail Buying class (ECIDE 306) at Old Dominion University. Given the determination of math required, a second phase as to develop a competency based curriculum guide to be used.
Approximation By Discrete Operators, J. J. Swetits, B. Wood
Approximation By Discrete Operators, J. J. Swetits, B. Wood
Mathematics & Statistics Faculty Publications
A discrete, positive, weighted algebraic polynomial operator which is based on Gaussian quadrature is constructed. The operator is shown to satisfy the Jackson estimate and an optimal version is obtained.
Complementary Extremum Principles, J. Swetits, C. Rogers
Complementary Extremum Principles, J. Swetits, C. Rogers
Mathematics & Statistics Faculty Publications
Important complementary extremum principles are generated without recourse to general variational theory. The results are illustrated by an application to a class of boundary value problems in Magnetohydrodynamics.
The Relationship Of Bottom Sediments To The Current-Generated Topography On Crumps Bank And Willoughby Bank, Southern Chesapeake Bay, Virginia, Eugene Robert Brush
The Relationship Of Bottom Sediments To The Current-Generated Topography On Crumps Bank And Willoughby Bank, Southern Chesapeake Bay, Virginia, Eugene Robert Brush
OES Theses and Dissertations
Crumps Bank and Willoughby Bank in Southern Chesapeake Bay are an area of varying topography. The area is bounded by two large bridge-tunnel spans, the dredged Thimble Shoal Channel borders it to the north, and the Ocean View section of Norfolk, Virginia lies to the south. The purpose of this investigation is to determine the relationship of the bottom sediments of Crumps Bank and Willoughby Bank.to the current-generated topography, and that this topography is the result of tidal currents.
The bathymetry, bottom sediment characteristics, bottom tidal currents, and the correlation of depth to various sediment parameters were examined to determine …
The Problem Of Social Change As Seen In The Life And Work Of Jean Jaurès And George Sorel, Frances Boyce Glover
The Problem Of Social Change As Seen In The Life And Work Of Jean Jaurès And George Sorel, Frances Boyce Glover
History Theses & Dissertations
The purpose of this thesis is to determine the place of the thought of Jean Jaures and Georges Sorel in the continuum of the French revolutionary search for a social and political order that would protect individual liberty and guarantee justices Biographical sketches, showing the influences that helped to shape the thought of Jaures and Sorel are followed by an analysis of their concepts of liberty and justice as the motivation for change, The major aspects of the works and careers of each are studied to determine how consistent they were. There was an underlying consistency in their thought. Both …
Suspended Matter And Light Attenuation In A Turbid Estuary, Daniel E. Campbell
Suspended Matter And Light Attenuation In A Turbid Estuary, Daniel E. Campbell
OES Theses and Dissertations
A study was made in Hampton Roads, Virginia, to characterize the suspended matter and to investigate its relationship to the light attenuation coefficient. The study gives a detailed description of the seston and its variations with time and space. An evaluation of the light attenuation coefficient as an indicator of seston distributional parameters was made.
The distribution of the suspended matter is obtained through gravimetric, Coulter counter and microscopic analyses. Microscopic analysis is employed to determine the composition of the seston and ATP determinations give the amount of living biomass. The suspended matter is characterized in terms of weight, numbers, …
A Study Of The Gas-Solid Reaction Between Hydrogen Sulfide And Mercury(I) Chloride; Development Of A Method For Determination Of Atmospheric Hydrogen Sulfide, Eric H. De Carlo
A Study Of The Gas-Solid Reaction Between Hydrogen Sulfide And Mercury(I) Chloride; Development Of A Method For Determination Of Atmospheric Hydrogen Sulfide, Eric H. De Carlo
Chemistry & Biochemistry Theses & Dissertations
The possibility of measuring hydrogen sulfide indirectly by measuring the mercury evolved from the gas-solid reaction between hydrogen sulfide and mercury(I) chloride was studied. DMCS treated glass wool was coated with mercurous chloride and used as a conversion material. The response to hydrogen sulfide was studied as a function of concentration and temperature. The possible interference of other sulfur gases and water was examined.
The studies indicated that hydrogen sulfide could be determined at concentrations as low as 15 ppb. It was found that mercaptans would actively interfere with the hydrogen sulfide to mercury conversion, but that sulfur dioxide would …
Description Of The Larval Development Of Squilla Empusa Say (Crustacea Stomatopoda) With Aspects Of Larval Ecology In Chesapeake Bay, Steven Gaines Morgan
Description Of The Larval Development Of Squilla Empusa Say (Crustacea Stomatopoda) With Aspects Of Larval Ecology In Chesapeake Bay, Steven Gaines Morgan
OES Theses and Dissertations
Larvae of Sguilla empusa were collected from the plankton and were reared in the laboratory to describe the pelagic larval development and the postlarval stage. Nine pelagic stages are passed through before the postlarval stage is attained.
The larvae reared for descriptive purposes were subjected to sixteen combinations of temperature and salinity to determine their tolerance to the two parameters. Larvae survived longer and molted more frequently when reared at 25°/oo and 20°C or 25°C, which corresponds to the natural conditions of the Chesapeake Bay when the larvae were collected.
A three year planktonic survey conducted in the lower region …
Optimal Control Of A Large Space Telescope Using An Annular Momentum Control Device, Arun Anant Nadkarni
Optimal Control Of A Large Space Telescope Using An Annular Momentum Control Device, Arun Anant Nadkarni
Mechanical & Aerospace Engineering Theses & Dissertations
Application of a new development in the field of momentum storage devices, the Annular Momentum Control Device (AMCD), to the twin problems of large angle maneuvers and fine pointing control is considered. The basic concept of the AMCD consists of a spinning rim, with no central hub area, suspended by a minimum of three magnetic bearings, and driven by a noncontacting electromagnetic spin motor. The dissertation considers in detail the design of an optimal controller to achieve both large angle maneuvers and the fine pointing control of a Large Telescope (LST) with a single configuration, consisting of a single AMCD …
A Seasonal Study Of Phytoplankton Composition Abundance And Productivity In Back Bay, Virginia, Robert Ringgold Comegys
A Seasonal Study Of Phytoplankton Composition Abundance And Productivity In Back Bay, Virginia, Robert Ringgold Comegys
Biological Sciences Theses & Dissertations
Phytoplankton samples were collected monthly (August 1974-June 1975) at two stations in the Back Bay system of southeastern Virginia. Measurements of phytoplankton productivity and potentially influencing environmental parameters (water and air temperature, turbidity, depth, pH, salinity, dissolved oxygen) accompanied sample collections. A total of 106 phytoplankton species, representing six algal divisions and 54 genera were identified. Cyanophyta species were dominant at both stations in the warmer months of August, September, October, and June, and in April at one station only. In all remaining months, Chlorophyta species were dominant, indicating a seasonal shift in phytoplankton composition during winter and spring. The …
The Effects Of Temperature And Salinity On The Larval Development Of The Grass Shrimp, Palaemonetes Pugio Holthuis Reared In The Laboratory, William Ray Floyd Iii
The Effects Of Temperature And Salinity On The Larval Development Of The Grass Shrimp, Palaemonetes Pugio Holthuis Reared In The Laboratory, William Ray Floyd Iii
OES Theses and Dissertations
Palaemonetes pugio larvae, obtained by induced breeding of adults collected in the late fall of 1975 from the Lafayette River, Norfolk, Virginia, were reared in the laboratory using a six temperature by seven salinity factorial design in order to determine the effects of these factors on larval development. Test conditions involved temperature levels ranging from 10°C to 32.5°C and salinity levels from 5°/oo to 35°/oo. At each temperature-salinity condition, 36 larvae were reared individually in 25 ml of artificial seawater containing 25 mg/kg of polyethylene oxide. Food consisted of Artemia nauplii at a concentration of 30/ml of culture water. From …
Static Temperature Measurements In Supersonic Flow Using Lasar Raman Spectroscopy, Paul A. Nystrom
Static Temperature Measurements In Supersonic Flow Using Lasar Raman Spectroscopy, Paul A. Nystrom
Mechanical & Aerospace Engineering Theses & Dissertations
Laser Raman spectroscopy is a nonintrusive technique which can generate mean static temperature (MST) data within flow fields. By ratioing two simultaneously gathered portions of the Raman scattered spectrum, absolute intensity measurements were not needed. This method was applied to a supersonic cold air jet, where the NST ranged from 160'K to 300'K. Accurate measurements were not realized due to the presence of flow contaminates, especially water vapor.
Sediment Interstitial Dissolved Mercury And Carbon Relationships In An Artificial And Natural Marsh, James River, Virginia, Apostolos Katsaounis
Sediment Interstitial Dissolved Mercury And Carbon Relationships In An Artificial And Natural Marsh, James River, Virginia, Apostolos Katsaounis
OES Theses and Dissertations
Thirty six sediment cores were collected during August, 1976 and January, 1977 in order to examine the relationships between dissolved organic carbon and total dissolved mercury in the interstitial water of two marshes located near Windmill Point, James River, 16 km downstream from Hopewell, Virginia. The Windmill Point marsh development site is a dredged material disposal island in the James River. The reference marsh which does not contain dredged material, is located 2.3 km upstream at Ducking Stool Point.
The concentrations of dissolved organic carbon and total dissolved mercury showed no significant difference between the two marshes. Trends in the …
The Effects Of Electron Irradiation On Mosfets, Mark D. Skeldon
The Effects Of Electron Irradiation On Mosfets, Mark D. Skeldon
Physics Theses & Dissertations
The characteristics of n and p-channel MOSFETs have been investigated while irradiated with electron radiation from Strontium 9Ø. The drain current vs. gate voltage of the p-channel MOSFET and the threshold voltage changes in n and p-channel MOSFETs have been studied with and without aluminum shielding. The switching characteristics and threshold voltage changes of COS/MOS dual input NAND gates have been investigated while exposed to electron radiation. Various methods of annealing the radiation damage to these devices is discussed.
Fundamental Analysis Of The Linear Multiple Regression Technique For Quantification Of Water Quality Parameters From Remote Sensing Data, Charles Henry Whitlock Iii
Fundamental Analysis Of The Linear Multiple Regression Technique For Quantification Of Water Quality Parameters From Remote Sensing Data, Charles Henry Whitlock Iii
Civil & Environmental Engineering Theses & Dissertations
Inconsistent results have been obtained from previous experiments which have applied linear multiple regression techniques to remote sensing data for quantification of water quality parameters. The objective of this investigation is to define optical physics and/or environmental conditions under which the linear multiple regression should be applicable. To achieve this objective, an investigation of the signal response equations is conducted and the concept is tested by application to both analytical test cases and actual remote sensing data from a laboratory under controlled conditions.
Investigation of the signed response equations shows that the exact solution for a number of optical physics …
Precise Frequency Control Of The Voltage Controlled Oscillator Using Finite Digital Word Lengths, Timothy Peter Hulick
Precise Frequency Control Of The Voltage Controlled Oscillator Using Finite Digital Word Lengths, Timothy Peter Hulick
Electrical & Computer Engineering Theses & Dissertations
For an oscillator that is periodically swept in frequency between some upper and lower bound, the output amplitude may easily be made constant and therefore known with a high degree of certainty. The instantaneous frequency exists only at a point in time and therefore possesses a zero probability of existing at any point. This thesis deals with the development of a method for interchanging the probability density functions of amplitude and frequency so that the latter becomes known with certainty while the former is known only to the extent that it is within a certain range.
The method developed makes …
A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman
A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman
Civil & Environmental Engineering Theses & Dissertations
The environmental impact of the transport of pollutants in open channel flow has for many years been of interest due to the continuous introduction of heavy metals, pesticides, herbicides, and other foreign substances into natural waterways. In order to fully understand this transport process, it-is necessary to examine the significance of its individual components. In the present study an explicit two-dimensional finite difference model, designed to investigate the influence of suspended sediment on the pollutant transport process, is presented. Specific attention is directed toward examining the role of suspended sediment in 1) the turbulent vertical transport mechanism in a stratified …
Effect Of Nitrite And Nitrate On The Larval Development Of The Grass Shrimp Palaemonetes Pugio Holthuis, Carl Bingham Hinesman
Effect Of Nitrite And Nitrate On The Larval Development Of The Grass Shrimp Palaemonetes Pugio Holthuis, Carl Bingham Hinesman
OES Theses and Dissertations
The effects of nitrite and nitrate on survival and larval development of the grass shrimp Palaemonetes pugio were investigated in the laboratory. Nitrite concentrations assayed were 0 (control), 0.5, 1.0, 10, 25 and 50 mg NO2/1. Nitrate concentrations tested were 0 (control), 100, 250, 500, 1000 and 2000 mg NO3/1. Temperature and salinity conditions were 25 C and 25 ‰, respectively, and all tests occurred in the dark. Thirty-six larvae were reared in each assay, twelve from each of three adult females.
Nitrite levels of'5 and 50 mg NO2/1 significantly reduced survival of larvae …
A Baseline Study On The Possible Mechanisms Of Larval Stomatopod Distribution On The Carolina Shelf, Carl Robert Berman Jr.
A Baseline Study On The Possible Mechanisms Of Larval Stomatopod Distribution On The Carolina Shelf, Carl Robert Berman Jr.
OES Theses and Dissertations
The South Carolina Marine Resources Institute provided the author with 198 station samples containing 2,193 stomatopod larvae. These larvae had been collected during ichthyoplankton Bongo tows on five separate cruises aboard the Institute's vessel R/V DOLPHIN (February, 1972 to January, 1975). The larvae were examined microscopically and divided into early, middle, and late stages according to known growth criteria. The larval distribution was plotted geographically, by seasons, and larval density (larvae/m3) was graphed against distance offshore. Using these data, together with the circulation characteristics on the Carolina Shelf, significant distributional data appeared which supported the hypothesis that the stomatopod population …
Temperature And Salinity Tolerance Of The Larvae Of The Sand Shrimp, Crangon Septemspinosa (Say), Karen Lyttle Hinsman
Temperature And Salinity Tolerance Of The Larvae Of The Sand Shrimp, Crangon Septemspinosa (Say), Karen Lyttle Hinsman
OES Theses and Dissertations
The effects of temperature and salinity on the larval development of the sand shrimp, Crangon septemspinosa, were investigated in the laboratory using 30 combinations of temperature and salinity in a five by six factorial experiment. The five temperatures were 5°c, 10°c, 15°c, 20°c, and 25°c and the six salinities were 10°/oo, 15°/oo, 20°/oo, 25°/oo, 30°/oo and 35°/oo. Thirty-six larvae were used for each temperature-salinity combination. Temperature and salinity produced significant differences (1% level) in survival and the duration of larval development. Highest survival occurred at 15°c and 20°/oo. At optimum temperatures (15°c to 20°c) larvae exhibited the broadest tolerance …
Troubadour, 1977, Old Dominion University
Troubadour, 1977, Old Dominion University
Yearbooks
1977 yearbook of Old Dominion University
Freshman Register, 1977, Old Dominion University
Freshman Register, 1977, Old Dominion University
Yearbooks
1977 issue of the Freshman Register of Old Dominion University
Effect Of Compliant Wall Motion On Turbulent Boundary Layers, Dennis M. Bushness, Jerry N. Hefner, Robert L. Ash
Effect Of Compliant Wall Motion On Turbulent Boundary Layers, Dennis M. Bushness, Jerry N. Hefner, Robert L. Ash
Mechanical & Aerospace Engineering Faculty Publications
A critical analysis of available compliant wall data which indicated drag reduction under turbulent boundary layers is presented. Detailed structural dynamic calculations suggest that the surfaces responded in a resonant, rather than a compliant, manner. Alternate explanations are given for drag reductions observed in two classes of experiments: (1) flexible pipe flows and (2) water-backed membranes in air. Analysis indicates that the wall motion for the remaining data is typified by short wavelengths in agreement with the requirements of a possible compliant wall drag reduction mechanism recently suggested by Langley. Copyright © 1977 American Institute of Physics.
Modes Of Gulf Stream Intrusion Into The South Atlantic Bight Shelf Waters, Larry P. Atkinson
Modes Of Gulf Stream Intrusion Into The South Atlantic Bight Shelf Waters, Larry P. Atkinson
CCPO Publications
Consideration is given to the intrusion of Gulf Stream waters into the shelf waters of the South Atlantic Bight. It is observed that three modes of intrusion may occur, depending on particular ambient shelf water density. They are override, interleave, and bottom intrusion. It is noted that: (1) except in January, when the shelf water densities are relatively higher, 20°C Gulf Stream water can form a bottom intrusion anywhere along the coast, (2) Gulf Stream waters of 24°C can only form bottom intrusions from April to November, and (3) the rest of the year, 24°C waters interleave or override.
Solar Magnetoatmospheric Waves-A Simplified Mathematical Treatment, John A. Adam
Solar Magnetoatmospheric Waves-A Simplified Mathematical Treatment, John A. Adam
Mathematics & Statistics Faculty Publications
The inhomogeneous wave equation for a special class of magnetoatmospheric waves is formally solved, and the principle of stationary phase used to provide information on the group velocity properties of such waves. General results are presented concerning the associated mechanical energy flux. The basic problem considered is relevant to waves initiated by sudden events in the solar atmosphere.
Feeding Ecology Of Black Sea Bass Centropristis Striata On An Artificial Reef Off Virginia (Perciforms: Serranidae), Ping K. Chee
Feeding Ecology Of Black Sea Bass Centropristis Striata On An Artificial Reef Off Virginia (Perciforms: Serranidae), Ping K. Chee
OES Theses and Dissertations
The feeding ecology of the black sea bass, Centropristis striata, associated with artificial reefs shows seasonal and size-related changes. Monthly collections totaling 520 black sea bass taken from an artificial reef near the Chesapeake Light Tower, Virginia, between August 1975 and May 1976, were analyzed for food habits as revealed by number, volume, frequency of occurrence and a modified Index of Relative Importance.
The black sea bass feeds on the artificial reef as well as the adjacent areas. When food was abundant on the reef, food items from the reef and the surrounding area were consumed. Upon depletion of the …
Evaluation Of Upwelling Infrared Radiance In A Nonhomogeneous Nonequilibrium Atmosphere, Sundaresa Venkata Subramanian
Evaluation Of Upwelling Infrared Radiance In A Nonhomogeneous Nonequilibrium Atmosphere, Sundaresa Venkata Subramanian
Mechanical & Aerospace Engineering Theses & Dissertations
The primary purpose of this study was to investigate the influence of vibrational nonequilibrium upon upwelling infrared radiance from the earth's atmosphere. Basic equations are presented for calculating the atmospheric transmittance, heating rates, and equilibrium and nonequilibrium upwelling radiances. By employing the Lorentz line-by-line model for spectral absorption, heating rates and upwelling radiances were calculated for equilibrium as well ·as nonequilibrium conditions in the spectral range of 4.6 μ CO and 3.3 μ 'CH4 bands. For the spectral range of CO fundamental band, the influence of different 1~arameters on the upwelling radiance was also investigated. The results indicate that …