Hall-Greene, Deborah L.

This study was designed to examine the experiences of a small group of Black males in a college of aeronautical science, a major traditionally dominated by White males. The study also considered the differences in how African American males and Caribbean black males perceived and acted upon the same experiences. Through a social learning theoretical approach, the study examined the relevant factors, processes, and experiences involved in these Black males choice of aeronautical science as a majo...

Bunt, Thomas Michael

The study of the process of speciation is instrumental to understanding the species diversity observed today. Diverging populations are intriguing, because speciation has not reached an endpoint, yet the process that may eventually lead to distinct species can be studied. Systems that contain many putative species and/or parallel divergences, such as many species flocks and species pairs, are extraordinary examples of divergence and therefore are critical to the understanding of the speciation p...

Pelanne, Lisa Michelle Hudson

In recent years, there has been growing concern about the effect of environmental pollutants on the immune system. In the current study, we investigated the toxicity induced by certain environmental pollutants on the immune systems of fish, amphibians, and mice. Fish in the laboratory were tested for susceptibility to immunosuppression by treatment with 1,3-Bis (chloroethyl)-1-nitrosourea (BCNU). Immunotoxicity of the tilapian immune system was detectable using mitogen-induced proliferation assa...

Johnson, Deborah Cumaraswamy

The mechanism of gene regulation used by Gram-negative bacteria during quorum sensing is well understood in the bioluminescent marine bacterium Vibrio fischeri. The cell-density dependent activation of the luminescence (lux) genes of V. fischeri relies on the formation of a complex between the autoinducer molecule, N-(3-oxohexanoyl) homoserine lactone, and the autoinducer-dependent transcriptional activator LuxR. LuxR, a 250 amino acid polypeptide, binds to a site known as the lux box centered a...

Ramskill, Thomas Edward

This dissertation presents the results of testing to determine the load-slip characteristics of single-shear single lag screw connections subjected to monotonic lateral loading parallel to grain. Of particular importance was the comparison of experimental capacity and 5% offset yield load resistances to load resistances as predicted by the American Forest & Paper Association s (AF&PA) publication General Dowel Equations for Calculating Lateral Connection Values, Technical Report ...

Christopher, Todd Grant

Throughout the evolution of man, the ocean has played an integral part in his survival. As technology has advanced so has mans use of the ocean. In order to preserve the history of these advancements for future generations, museums have been erected. The Carolina Coastal Museum is dedicated to the nautical history of the Carolinas. The project is fueled by the theories and philosophies of zoomorphism and anthropomorphism. The building is based upon the skeletal structure of a fish, the main elem...

Beskow, Gregory John

Public dependence on air transportation has grown to its largest point in history. Along with this increased dependence is a heightened awareness of safety concerns and the need for pilots to cover all scheduled flights. All commercial pilots are certified for the particular aircraft they are flying by satisfactorily completing a Federal Aviation Administration (FAA) approved course. During the training course, a number of training devices are used including a Full Flight Simulator (FFS) and a F...

Sherrell, Ian Michael

A vast majority of coal and mineral cleaning and upgrading processes involve the addition of water. The water allows the movement of particles throughout the processing plant and the upgrading of the material. When the process is complete the finished product must be dewatered. This is due to storage concerns, in which the water takes up a majority of the space, and high transportation costs, in which no compensation is obtained from the buyer for the shipment of the liquid. Dewatering is accomp...

Edwards, Alex T.

Force and moment balances have proved to be essential in the measurement and calculation of aerodynamic properties during wind tunnel testing. With the recent advancements of technology, new fiber optic sensors have been designed to replace the conventional foil strain gage sensors commonly found on balances, thereby offering several distinct advantages. The use of fiber optic sensors on a balance brings with it some potential advantages over conventional strain gage balances including increased...

Grist, Joseph Daniel

This investigation examined the diet, growth, movement, population genetics, and possible consumption demands of an introduced blue catfish Ictalurus furcatus population in Lake Norman, North Carolina. Clupeids, Corbicula fluminea, and Chara were the predominant food items (percent stomach contents by weight) found in blue catfish, and varied by season, lake-region, and fish size-class. Lake Norman blue catfish grow at a slower rate than has been reported for other reservoir populations, with fa...

O Neill, Brendan Michael

For many years, the Virginia Department of Game and Inland Fisheries (VDGIF) has managed freshwater fisheries without fully understanding their stakeholders. To increase its knowledge and improve management, the VDGIF commissioned a market segmentation study to collect baseline information about its constituents and serve as a model for future studies. I developed a 16-page mail questionnaire that was sent to a stratified random sample of 5,378 Virginia resident freshwater fishing license holder...

Holoviak, Brent Matthew

In order to produce a more current inventory of forest estimates along with change estimates, the Forest Inventory Analysis (FIA) program has moved to an annual system in which 20% of the permanent plots in a state are surveyed. The previous system sampled permanent plots in 10-year intervals by sampling states sequentially in a cycle (Wayman 2001, USDA FIA). The move to an annual assessment has introduced the use satellite technology to produce forest estimates. Wayman et al (2001) researched t...

Finney, Angela H.

Quorum sensing in Gram-negative bacteria is best understood in the bioluminescent marine microorganism, <i>Vibrio fischeri</i>. In <i>V. fischeri</i>, the luminescence or <i>lux</i> genes are regulated in a cell density-dependent manner by the activator LuxR in the presence of an acylated homoserine lactone autoinducer molecule (3-oxo-hexanoyl homoserine lactone). LuxR, which binds to the <i>lux&amp...

Usdu, Canan

Man still breathes both in and out. When is architecture going to do the same?...Take of your shoes and walk along a beach through the oceans last thin sheet of water gliding landwards and seawards. You feel reconciled in a way you wouldnt feel if there were a forced dialogue between you and either one or the other of these great phenomena. For here, in - between land and ocean - in this in-between realm, something happens to you that is quite different from the sailors nostalgia. No landward ye...

Engel, Sarah Rose

An increase in public environmental awareness and a decrease in resources within government regulatory agencies have led to a larger interest in volunteer biomonitoring programs. Government agencies are currently using volunteer data for official purposes with increasing frequency, but questions have been raised about the validity of the data collected by volunteers who have only limited training and experience. Therefore, we conducted a detailed study to assess, modify, and validate the Virgini...

Talluri, Srikrishna

"Hot-tests" form a vital facet towards the end of the production line of modern automotive plants, where the condition of the engine is checked by running it for a short period of time, to ensure its performance under standard operating conditions. The duration of hot-tests for small engines varies from 20-75 seconds.<br> <br>In the conventional procedure, about 10-30 grams of lubricant (for pre-coating) is used with about 650ml of standard oil for engine te...

Mish, Patrick Francis

This dissertation presents measurements of unsteady surface pressure on airfoils encountering flow disturbances. Analysis of measurements made on an airfoil immersed in turbulence and comparisons with inviscid theory are presented with the goal of determining the effect of angle of attack on an airfoils inviscid response. Unsteady measurements made on the surface of a linear cascade immersed in periodic flow are presented and analyzed to determine the relationship between the blades inviscid res...

Hunter, Anne Katherine

I examined the abundance, composition, and distribution of 34 fishes within the first 24 km below Philpott Dam on the Smith River, a hydropeaking system in Virginia. Fish were sampled at 12 sites over 8 time periods ranging from 2000 to 2002 across April, June, and October. I evaluated spatial and temporal change in fish community characteristics. Species demonstrated persistent trends in abundance, diversity, and composition throughout the duration of the study. Fish abundance and diversity gen...

Reynolds, Michelle H.

The Laysan teal, an endangered species, is restricted to a single population on Laysan Island, a remote atoll of the Hawaiian archipelago. Little is known of the Laysan teals ecology, therefore, I examined food habits, habitat use, and population dynamics. These aspects of its ecology are fundamental to the species management and conservation. I described diel and nocturnal habitat use, home range, and foraging with radio telemetry in 1998-2000. Most individuals showed strong site fidelity durin...

Scott III, John MacDougall

Estimating the cost of new technology insertion into an existing (or new) operating environment is of great concern and interest for those entities that own and operate that technology. New technology has many cost requirements associated with it, for instance; design, manufacturing, operation, maintenance and disposal all add to the life-cycle cost of a technology. Estimation and planning methods are needed to better match the costs associated with technology life-cycle requirements (design, ma...

Persinger, Jason William

The diversity of fish species found in warmwater stream systems provides a perplexing challenge when selecting species for Instream Flow Incremental Methodology (IFIM) studies. An often-suggested approach has been to use habitat guilds to incorporate the diversity found in these systems. My goal is to determine the feasibility of developing habitat suitability criteria (HSC) for the entire fish assemblage in the North and South Fork Shenandoah River, Virginia, using habitat guilds.I examined the...

Stall, Karen Marie

Evaluation of Sedimentation Control as a Best Management Practice forRemoving Copper-based Crop Protectants in Plasticulture RunoffKaren Marie Stall(ABSTRACT)The fate and distribution of copper-based crop protectants, applied to tomato fields toprotect against disease, were investigated in a greenhouse-scale simulation of farmingconditions in a coastal environment. Following rainfall, 99% of the applied copper wasfound to remain on the fields sorbed to the soil and plants; most of the soil-bound...

Mishra, Sudhanshu

iiAquaculture, the cultured production of fish, is growing at a rapid pace worldwide. Theindustry is generating approximately 140,000 cubic meter wastewater per year. For thisindustry to flourish, viable methods for treating the resulting waste stream must be identified.The various methods were tried by many researchers like sand filtration method, recirculatingaquaculture system, intermittent filtration methods. The most of the industries use sandfiltration methods for treating aquaculture wast...

Olsen, Erik Charles Buck

Driving field experiment data were used to investigate lane changes in which a slow lead vehicle was present to:<p>1) characterize lane changes,<p>2) develop predictive models,<p> 3) provide collision avoidance system (CAS) design guidelines.<p>A total of 3,227 slow lead vehicle lane changes over 23,949 miles were completed by sixteen commuters. Two instrumented vehicles, a sedan and an SUV, were outfitted with video, sensor, and radar data...

Adams, Susan H.

COMMUNICATION UNDER STRESS: INDICATORS OF VERACITY AND DECEPTION IN WRITTEN NARRATIVESby Susan H. AdamsVirginia Polytechnic Institute and State UniversityDr. Marcie Boucouvalas, ChairHuman Development(Adult Learning and Human Resource Development)(ABSTRACT)This exploratory study examines linguistic and structural features of written narratives for predictive value in determining the likelihood of veracity or deception. Sixty narratives written by suspects and victims identified through the inves...

Johnston, Christopher Owen

The research presented in this thesis examines the use of an estimated actuator work value as a performance parameter for the comparison of various aerodynamic control device configurations. This estimated actuator work, or practical work as it will be referred to as in this thesis, is based on the aerodynamic and structural resistance to a control surface deflection. It is meant to represent the actuator energy cost required to deflect a general configuration of conventional or unconventional c...

Buscher, Jamie Todd

The Impact of Long-Term Glacial Erosion on the Active Chugach-St. Elias Mountains, southern AlaskaJamie Todd BuscherABSTRACTThe influence of erosion on uplifting orogens has been demonstrated to be a primary force in landscape development. An understanding of fluvial erosion in mountain belts is fairly well documented, but the impact of glacial erosion is yet to be fully recognized. The uplift of the Chugach-St. Elias Mountains over the last 5-6 Ma under the influence of intense glaciation provi...

Babylon, Ruth G.

In March 2002, The Nature Conservancy purchased a 9,000-acre tract of land on and near Warm Springs Mountain in Bath County, Virginia. The purpose of this paper is to examine community-based conservation strategies utilized by The Nature Conservancy in two well-established Virginia reserves to determine the effectiveness of those strategies in the protection of Warm Springs Mountain. The Conservancys previous work on Virginias Eastern Shore and in the Clinch Valley of southwest Virginia reveals ...

Seock, Yoo-Kyoung

In todays era of intense competition for acquiring and retaining customers, customer retention has become a major issue and a key objective in modern retailing. With the emergence of new information technologies, the Internet offers new possibilities for customer retention through the management of relationships between marketers and consumers. Little empirical research has addressed the role of Internet websites in retaining customers for particular brands or at particular stores. The purpose o...

Wynn, Thomas Cleveland

Well-cuttings data and wireline logs in conjunction with limited core and outcrop data are used to generate a regional, three dimensional high resolution sequence framework for Upper Mississippian (Chesterian), Big Lime carbonates, West Virginia, U.S.A.. The analysis was done using the washed coarse fraction (1-2 mm) of cuttings for each sample interval, which were separated into Dunham rock types, counted to determine relative abundance and the data presented as percent lithology plotted agains...

Gates, Robert Valentine

As part of an on-going process of centralizing control of government science and technology (S&T) after World War II, in 1966 the Navy went through a major reorganization that was intended to centralize the strategic management of the Navy laboratory system. This centralization was to be accomplished by placing the major Navy research and development activities in a single systems command the Naval Material Command - and establishing the position of Director of Navy Laboratories. Organiz...

Stephens, Scott McDonald

At the age of eighteen, when I was approaching the end of my apprenticeship as a cabinetmaker, I made my first self designed piece of furniture. The master cabinetmaker or the client determined the form of most of the furniture made in our shop, and I seldom liked it. I did not even like the wood we used for the best pieces: walnut. I chose light colored ash for my bed and cupboard, and I made them so they looked good on all sides, with the same wood and the same careful work back and front. I d...

Berry, Matthew M.

A new method of numerical integration is presented here, the variable-step Stormer-Cowell method. The method uses error control to regulate the step size, so larger step sizes can be taken when possible, and is double-integration, so only one evaluation per step is necessary when integrating second-order differential equations. The method is not variable-order, because variable-order algorithms require a second evaluation.The variable-step Stormer-Cowell method is designed for space surveillance...

Settle, Lori Louise

Translation, the transfer of the written word from one language to another, has a long history, and many important scholars have helped shape its perceptions, accepted processes, and theories. Machine translation, translation by computer software requiring little or no human input, is the latest movement in the translation field, a possible way for the profession to keep abreast of the enormous demand for scientific, business, and technical translations. This study examines MT by placing it in a...

Tang, Genglin

This dissertation presents results from a thorough study of the tip-gap turbulent flow structure in a low-speed linear compressor cascade wind tunnel at Virginia Tech that includes a moving belt system to simulate the relative motion between the tip and the casing. The endwall pressure measurements and the surface oil flow visualizations were made on a stationary endwall to obtain the flow features and to determine the measurement profiles of interest. A custom-made miniature 3-orthogonal-veloci...

Hagen, Elizabeth M.

Streams and terrestrial ecosystems are linked through allochthonous organic matter inputs from streamside vegetation. This allochthonous material makes up the energy base for forested aquatic food webs. Therefore, removal of riparian vegetation associated with agricultural land use affects stream ecosystem structure and function. The objectives of this study were to measure and compare allochthonous input and leaf breakdown rates along a gradient of agricultural land use in southern Appalachian ...

Kilpatrick, John Matthews

The comparative performance of striped bass Morone saxatilis (STB) and hybrid striped bass M. saxatilis x M. chrysops (HSB) was evaluated in Claytor Lake, Virginia. This study assessed: 1) habitat use versus habitat availability for STB and HSB; 2) seasonal movement patterns, movement rates, and emigration rates of STB and HSB; and 3) angler catch rates of STB and HSB in Claytor Lake.In general, STB and HSB used similar habitats throughout this study. However, HSB used warmer (2-3aC) water than ...

Gutridge, Christopher Jason

Good motion cueing in a flight simulator serves to enhance the overall simulation environment. However, poor motion cueing can greatly detract from the simulation and serve solely to distract the pilot. The latter was the case for Virginia Techs three degree-of-freedom motion-base.The most common method of motion cueing is to use washout filters to produce the best motion cues within the physical limitations of the motion system. This algorithm is named the classical washout algorithm and its fi...

Hansen, Gail Ann

This paper describes a three part analysis to characterize the interaction between the female upper extremity and a helicopter cockpit side airbag system and to develop dynamic hyperextension injury criteria for the female elbow joint. Part I involved a series of 10 experiments with an original Army Black Hawk helicopter side airbag. A 5th percentile female Hybrid III instrumented upper extremity was used to demonstrate side airbag upper extremity loading. Two out of the 10 tests resulted in hig...

Sen, Debayan

A modeling framework to evaluate the costs and benefits of implementation of Con-trollerPilot Data Link Communication (CPDLC), and Air Traffic Management (ATM)decision support tools is proposed in this paper. The benefit/cost evaluation is carriedout for four key alternatives namely alternative A: Do nothing scenario (only voicechannel), alternative B: Voice channel supplemented with CPDLC, alternative C:Alternative B with ATM tools in a non-integrated scenario and finally alternative D:Alternat...

Duque, Guillermo

Habitat degradation of saltmarsh ecosystems reduces the suitability of the marsh as permanent environments for resident species and seasonal nursery grounds for transient fauna. This study was conducted in Terrebonne-Timbalier bays near Cocodrie, Louisiana. Fishes and macroinvertebrates were collected using a drop sampler in marsh-edge and open-water habitat types, in three locations (i.e., pond, channel, and bay), and four seasons (Fall of 2000, Winter of 2000-2001, and Spring and Summer of 200...

Coble, Barry B.

Thesis--School of Advanced Airpower Studies, 1996. | Shipping list no.: 98-0921-M. "May 1997." Includes bibliographical references (p. 27-36). Also available via Internet from the Air University Press web site. Address as of 10/10/03: http://aupress.au.af.mil/SAAS%5FTheses/Coble/coble.pdf; current access is available via PURL.

Beale, Michael O.

Thesis--School of Advanced Airpower Studies, 1996. | Shipping list no.: 98-0921-M. "August 1997." Includes bibliographical references. Also available via Internet from the Air University Press web site. Address as of 10/9/03: http://aupress.au.af.mil/SAAS%5FTheses/Beale/beale.pdf; current access is available via PURL.

Lang, Christopher Louis.

Thesis (M.A.)--Trinity Evangelical Divinity School, 1995. | Abstract. Includes bibliographical references (leaves 94-97).

Keiran, Alan Nichols.

Thesis (D. Min.)--Gordon-Conwell Theological Seminary, 1997. | Abstract and vita. Includes bibliographical references (leaves 98-109, 244).

Schow, Kenneth C.

Thesis--School of Advanced Airpower Studies, 1994. | Shipping list no.: 1998-0921-M. "October 1995." Includes bibliographical references. Also available via Internet from the Air University Press web site. Address as of 11/5/03: http://aupress.au.af.mil/SAAS%5FTheses/Schow/schow.pdf; current access is available via PURL.

Franklin, Joan Eggert.

Thesis (Ed. D.)--Temple Baptist Seminary, 1995. | Includes bibliographical references (leaves 156-174)

Lewis, Michael.

Thesis--School of Advanced Airpower Studies, 1996. | Shipping list no.: 1998-0921-M. "August 1997." Includes bibliographical references. Also available via Internet from the Air University Press web site. Address as of 10/28/03: http://aupress.au.af.mil/SAAS%5FTheses/Lewis/lewis.pdf; current access is available via PURL.

Noetzel, Jonathan C.

Thesis--School of Advanced Airpower Studies, 1992. | Shipping list no.: 1998-0921-M. "June 1993." Includes bibliographical references (p. 23-30). Also available via Internet from the Air University Press web site. Address as of 10/29/03: http://aupress.au.af.mil/SAAS%5FTheses/Noetzel/noetzel.pdf; current access is available via PURL.

Beaver, Jack Martin.

Thesis (D. Min.)--Erskine Theological Seminary, 1995. | Abstract. Includes bibliographical references (leaves 159-161)