Digital Commons Network^™

Slope Control In Western Boundary Currents, Sang-Ki Lee, J. L. Pelegri, John Kroll

Mathematics & Statistics Faculty Publications

An analytic solution is presented for the steady-state depth-averaged western boundary current flowing over the continental slope by combining three highly idealized models: the Stommel model, the Munk model, and the arrested topographic wave model. The main vorticity balance over the slope is between planetary vorticity advection and the slope-induced bottom stress torque, which is proportional to rv(h^-1)_x where r is the Rayleigh friction coefficient, h is the water depth, and v is the meridional velocity. This slope-induced torque provides the necessary source of vorticity for poleward flow over the slope, its simple interpretation being …

The Electoral College, The Right To Vote, And Our Federalism: A Comment On A Lasting Institution, Luis Fuentes-Rohwer, Guy-Uriel E. Charles

Articles by Maurer Faculty

The Electoral College has been subject to a constant barrage of criticism. This raises an obvious question: how has the College managed to survive despite its lack of popularity, its opacity and its generally controversial nature?

Commentators look to the wisdom and staying power of the founding generation as well as to the force of history and tradition. In this Article, we look carefully at a third possibility. That is, we look to the foundation of our political structure and the nature of our democratic commitments.

In this vein, we are particularly intrigued by the question of electoral legitimacy. To …

Are There Procedural Deficiencies In Tax Fraud Cases? A Reply To Professor Schoenfeld, Leandra Lederman

Articles by Maurer Faculty

No abstract provided.

Reading Instructional Leadership: A Survey Of Middle Level Principals In West Virginia Public Schools., Mary Lee Porter

Graduate Theses, Dissertations, and Problem Reports (ETD)

A review of the literature on reading and principals' reading instructional leadership indicates that nationally there is a crisis in middle level reading (grades, 5, 6, 7, 8, & 9). This study focused on the reading instructional leadership of Middle Childhood Level principals in West Virginia. Principals in West Virginia are held legally responsible for the academic achievement of their schools and thus, are charged with instructional leadership and assuring that “best practices” are used in their schools. This study attempted to identify the beliefs, experiences, demographic criteria, and best practices that principals believe have impacted SAT9 test scores at …

Effects Of Nickel-Aluminum-Beta Precipitates On Crack Growth Behavior In Inconel Alloy 783., Longzhou Ma

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recently developed γ-γ′-β three phases governing INCONEL* alloy 783 is the result of an extensive superalloy development program aimed at improving environmental-induced intergranular cracking resistance. Formation of intermetallic nickel aluminide β phase in alloy 783 is essentially resistant for the general oxidation. In this study, commercial alloy 783 was subjected to various metallurgical processing including heat treatments with β aging/without β aging, addition of 3% Cr into alloy, and thermo-mechanical processing (TMP). The corresponding microstructures were evaluated by means of the optical microcopy, SEM and TEM. These processed materials were subjected to the fatigue crack growth and sustained loading crack …

An Investigation Of The Relationship Between Saudi Teachers' Curriculum Perspectives And Their Preference Of Curriculum Development Models., Mansour A. Bin Salamah

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to investigate the relationship between Saudi teachers' curriculum perspectives and their preference of curriculum development models. The sample of the study consisted of science, math, and social studies teachers who taught in elementary, middle, and secondary schools in the Riyadh District of Saudi Arabia. The data were randomly collected from 423 teachers by utilizing a questionnaire. The questionnaire was composed of three parts. The participants were asked to determine their preference of the three curriculum perspectives and the three curriculum development models that were based on: Essentialism-Behaviorism, Pragmatism-Cognitivism, and Existentialism-Humanism. Frequencies, percentages, and means …

A Study Of The Relationship Between Characteristics Of Faculty Members In West Virginia Colleges And Their Level Of Implementation Of Information Technology., Andrew Neale Blackwood

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examined the relationships between characteristics of faculty members in West Virginia colleges and their level of information technology (IT) implementation. A one-shot case study research design was used to investigate the connection between the faculty members' gender, age, years of experience, academic discipline, rank, amount of computer education, computer access, Internet access, job satisfaction, and their level of IT implementation. The specially designed Computer Usage Survey was mailed to a randomly selected sample of 95 faculty members; responses were received from 64 (67%) faculty members. Data analysis identified statistically significant relationships between the faculty members' gender, years of …

Alternative Education In West Virginia: Perceptions Of Programs, Leadership And Success., Tammy Kay Brock-Fowler

Graduate Theses, Dissertations, and Problem Reports (ETD)

More and more students are being labeled at-risk in our educational system. These students are often behind academically, have dropped out of school, or have been suspended or expelled from conventional high schools. In West Virginia in 1995, 4,008 students did not complete high school (West Virginia University Survey Research Center, 1977). Alternative schools or programs are a direct result of a need to provide options to students who cannot be accommodated by conventional public schools. Alternative Education Program in West Virginia is defined as an authorized departure from the regular school program designed to provide educational and social development …

Teachers' Conceptions Of The Nature Of Science: Analyzing The Impact Of A Teacher Enhancement Program In Changing Attitudes And Perceptions Of Science And Scientific Research., Aimee Lee Govett

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine the efficacy of a residential science research experience in changing participants' attitudes and understanding of the nature of science and their view of themselves as science researchers. Data from interviews, journal writings, classroom observations and two pre-post instruments were used in the evaluation plan. As participants of this study, 16 inservice teachers (K–16) attended a two-week residential institute at the National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia. The format of the institute featured a scientific research experience designed to arm its participants with the skills needed to model their …

An Assessment Of The English-Language Needs Of Second-Year Thai Undergraduate Engineering Students In A Thai Public University In Thailand In Relation To The Second-Year Eap Program In Engineering., Patama Kittidhaworn

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study was to investigate the English-language needs of 182 second-year Thai undergraduate engineering students in a Thai public university in Thailand for their study in their second-year English program in engineering. A two-part self-assessment questionnaire was constructed based upon the previous research on the English-language needs of English as a Second Language (ESL)/English as a Foreign Language (EFL) students, particularly in Science and Technology in relation to English for Academic Purposes (EAP). The first part of the questionnaire asks for their demographic variables: gender, specialty, years of studying English in the school(s), and self-reported English proficiency in Listening, Speaking, …

Improved Leadership Through A Myers-Briggs Analysis: Personality Styles Of Principals And Teachers At The Secondary Level, Mark William Loos

Master's Theses

Digitized thesis

[Introduction To] Basic Java Programming: A Laboratory Approach, Lewis Barnett

Bookshelf

For first- and second-year undergraduates, an introduction to programming with Java, an object-oriented programming language that is a popular choice for Web applications. Kent and Barnett (U. of Richmond) introduce algorithms and problem-solving approaches that are important to programming general.

Disclosure In Annual Reports: An Agency Theoretic Perspective In An International Setting, Mohd Ismail Bin Ramli

Plymouth Business School Theses

Over the recent years 'transparency' or better information disclosure has been the buzzword of various corporate governance bodies due to the failures of the system of corporate governance, which arise from an agency relationship. However, there are arguments by 'free market' advocates suggesting that information is voluntarily disclosed. This study discusses and compares the disclosure of information relating to directors' behaviour in the United Kingdom, Canada, the Netherlands, France, Germany and Sweden. These countries were selected because they represent the developed countries with different accounting systems. Furthermore, they are also the board member countries of IASC and OECD. 'Transparency' relating …

An Evaluation Of The Influence Of Vibrations Received In The Distribution Environment To The Remaining Eddy Current Probe Lifetime, Edo Picek

Theses

Eddy Current probes are used for the testing of steam generator tubing integrity in nuclear power plants. Their use environment is far more severe than the distribution environment, which includes truck and airplane delivery of small parcels. As each probe has soldered connections susceptible to damage this study was undertaken to investigate a possible influence of vibrations due to transport to a probe lifetime. A sweep vibration test was performed on a product with no packaging. It proved that the probe was able to vibrate in different ways unless restricted by the package. With the packaging solution defined in more …

2001 January, Office Of Communications & Marketing, Morehead State University.

Morehead State Press Release Archive, 1961 to the Present

Morehead State University press releases for January of 2001.

Yield-Per-Recruit Analysis For Black Drum, Pogonias Cromis, Along The East Coast Of The United States And Management Strategies For Chesapeake Bay, Cynthia M. Jones, Brian K. Wells

OES Faculty Publications

Black drum, Pogonias cromis along the U.S. East Coast is subject to commercial and recreational harvest. However, prior to this study no modeling had been undertaken to examine the potential for overfishing in the Chesapeake Bay region. We present evidence from yield-per-recruit models that growth overfishing of black drum is unlikely under current fishing practices in this region. Particular attention was given to fishing practices in the Chesapeake Bay region where old, large fish predominate in the commercial and recreational catches (mean age=26 years: mean total length=108.4 cm; mean weight 22.1 kg). Yield-per-recruit model results showed that growth overfishing was …

Uptake Of Dissolved Organic Selenides By Marine Phytoplankton, Stephen B. Baines, Nicholas S. Fisher, Martina A. Doblin, Gregory A. Cutter

OES Faculty Publications

Se is present in multiple oxidation states in nature, each of which has unique chemical and biological reactivities. As a consequence, the rate of Se incorporation into food webs or its role as either a limiting nutrient or a toxic substance is a function of complex biogeochemistry. In particular, little is understood about the accumulation of dissolved organic selenides by phyto- or bacterioplankton. We assessed the bioavailability of dissolved organic selenides to marine and estuarine phytoplankton by presenting various algal species with filtered lysates of the diatom, Thalassiosira pseudonana, grown on media amended with radiolabeled selenite (⁷⁵Se[IV]). …

Top-Down Impact Through A Bottom-Up Mechanism. In Situ Effects Of Limpet Grazing On Growth, Light Requirements And Survival Of The Eelgrass Zostera Marina, Richard C. Zimmerman, Diana L. Steller, Donald G. Kohrs, Randall S. Alberte

OES Faculty Publications

Temporal changes in abundance, size, productivity, resource allocation and light requirements of a subtidal eelgrass (Zostera marina L.) population were followed for 2 yr after the September 1993 appearance of a previously rare oval form of the commensal limpet Tectura depicta (Berry) in Monterey Bay, California, USA, By exclusively targeting the epidermis, limpet grazing impaired photosynthetic performance but left respiratory demand, meristematic growth and more than 90 % of the leaf biomass intact, The resulting low P:R ratios of grazed plants raised the light requirements for the maintenance of positive carbon balance almost 2-fold relative to healthy ungrazed plants …

Control Of Phytoplankton Growth By Iron Supply And Irradiance In The Subantarctic Southern Ocean: Experimental Results From The Saz Project, P. W. Boyd, A. C. Crossley, G. R. Ditullio, F. B. Griffiths, D. A. Hutchins, B. Queguiner, Peter N. Sedwick, T. W. Trull

OES Faculty Publications

The influence of irradiance and Fe supply on phytoplankton processes was studied, north (47°S, 142°E) and south (54°S, 142°E) of the Subantarctic Front in austral autumn (March 1998). At both sites, resident cells exhibited nutrient stress (F_v/F_m 0 at 47°S and 9% I₀ at 54°S because of MLDs of 40 (47°S) and 90 m (54°S), when these stations were occupied. The greater MLD at 54°S is reflected by tenfold higher cellular chlorophyll a levels in the resident phytoplankton. In the 47°S experiment, chlorophyll a levels increased to >1 μg/L^-1 only in the high-Fe treatments, regardless …

Control Of Phytoplankton Growth By Iron And Silicic Acid Availability In The Subantarctic Ocean: Experimental Results From The Saz Project, D. A. Hutchins, Peter N. Sedwick, G. R. Ditullio, P. W. Boyd, B. Queguiner, F. B. Griffiths, C. Crossley

OES Faculty Publications

Subantarctic Southern Ocean surface waters in the austral summer and autumn are characterized by high concentrations of nitrate and phosphate but low concentrations of dissolved iron (Fe, similar to0.05 nM) and silicic acid (Si, <1 muM). During the Subantarctic Zone AU9706 cruise in March 1998 we investigated the relative importance of Fe and Si in controlling phytoplankton growth and species composition at a station within the subantarctic water mass (46.8degreesS, 142degreesE) using shipboard bottle incubation experiments. Treatments included unamended controls; 1.9 nM added iron (+Fe); 9 muM added silicic acid (+Si); and 1.9 nM addediron plus 9 muM added silicic acid (+Fe+Si). We followed a detailed set of biological and biogeochemical parameters over 8 days. Fe added alone clearly increased community growth rates and nitrate drawdown and altered algal community composition relative to control treatments. Surprisingly, small, lightly silicified pennate diatoms grew when Fe was added either with or without Si, despite the extremely low ambient silicic acid concentrations. Pigment analyses suggest that lightly silicified chrysophytes (type 4 haptophytes) may have preferentially responded to Si added either with or without Fe. However, for many of the parameters measured the +Fe+Si treatments showed large increases relative to both the +Fe and +Si treatments. Our results suggest that iron is the proximate limiting nutrient for chlorophyll production, photosynthetic efficiency, nitrate drawdown, and diatom growth, but that Si also exerts considerable control over algal growth and species composition. Both nutrients together are needed to elicit a maximum growth response, suggesting that both Fe and Si play important roles in structuring the subantarctic phytoplankton community.

Iron In East Antarctic Snow: Implications For Atmospheric Iron Deposition And Algal Production In Antarctic Waters, Ross Edwards, Peter N. Sedwick

OES Faculty Publications

To evaluate the deposition and solubility of aerosol iron in the Antarctic seasonal sea ice zone (SSIZ), iron was measured in snow samples collected from three areas in the SSIZ (Prydz Bay, Dumont d'Urville Sea and Ross Sea) and one continental area (Princess Elizabeth Land) of East Antarctica. Concentrations of total-dissolvable iron (that soluble at pH ~2) ranged from 20-2950 pg g^-1, with the lowest concentrations measured in snow from the Dumont d'Urville Sea. Using estimates of snow accumulation rates, we calculate atmospheric iron deposition fluxes of 0.017-0.11 mg m^-2 yr^-1(0.30-2.0 μmol m^-2 yr …

Effects Of Iron, Silicate, And Light On Dimethylsulfoniopropionate Production In The Australian Subantarctic Zone, G. R. Ditullio, P. N. Sedwick, D. R. Jones, P. W. Boyd, A. C. Crossley, D. A. Hutchins

OES Faculty Publications

Shipboard bottle incubation experiments were performed to investigate the effects of iron, light, and silicate on algal production of particulate dimethylsulfoniopropionate (DMSP_p) in the Subantarctic Zone (SAZ) south of Tasmania during March 1998. Iron enrichment resulted in threefold to ninefold increases in DMSP_p concentrations relative to control treatments, following 7 and 8-day incubation experiments. Additions of Fe and Si preferentially stimulated the growth of lightly-silicified pennate diatoms and siliceous haptophytes, respectively, to which we attribute the increased DMSP_p production in the incubation bottles. Both of these algal groups were previously believed to be low DMSP_{p …}

Introduction To Special Section: Saz Project, T. W. Trull, Peter N. Sedwick, F. B. Griffiths, S. R. Rintoul

OES Faculty Publications

Oceanographic processes in the subantarctic region contribute crucially to the phys. and biogeochemical aspects of the global climate system. To explore and quantify these contributions, the Antarctic Cooperative Research Center organized the SAZ Project, a multidisciplinary, multiship study carried out south of Australia in the austral summer of 1997-1998. We present an overview of the SAZ Project and some of its major results.

Holocene Sediment Records From The Continental Shelf Of Mac. Robertson Land, East Antarctica, Peter N. Sedwick, Peter T. Harris, Lisette G. Robertson, Gary M. Mcmurtry, Maximilian D. Cremer, Philip Robinson

OES Faculty Publications

Geochemical records are presented for five sediment cores from basins on the continental shelf of Mac. Robertson Land, East Antarctica. The cores contain 2-4 m thick sequences of hemipelagic, siliceous mud and ooze (SMO) deposited under seasonally open marine conditions. The inner and middle shelf SMO sequences are massive dark olive green material, whereas the outer shelf SMO sequences are dark olive material interspersed with light olive green layers similar to1-10 cm thick. The biogenic material is dominated by marine diatoms including Fragilariopsis curta, Fragilariopsis cylindrus, and Chaetoceros spp. in the dark-colored SMO and Corethron criophilum in the …

Porosity, Percolation Thresholds, And Water Retention Behavior Of Random Fractal Porous Media, Michael C. Sukop

University of Kentucky Doctoral Dissertations

Fractals are a relatively recent development in mathematics that show promise as a foundation for models of complex systems like natural porous media. One important issue that has not been thoroughly explored is the affect of different algorithms commonly used to generate random fractal porous media on their properties and processes within them. The heterogeneous method can lead to large, uncontrolled variations in porosity. It is proposed that use of the homogeneous algorithm might lead to more reproducible applications. Computer codes that will make it easier for researchers to experiment with fractal models are provided. In Chapter 2, the application …

New Input And Output Risk Management Strategies For Livestock Producers, Brian K. Coffey

University of Kentucky Master's Theses

Backgounding beef cattle is an inherently risky venture. Producers faceproduction risks as well as marketing risks. If a backgrounding operation is to be viable,these risks should be addressed and effectively managed. While some effective riskmanagement tools are currently available to livestock producers, some other potentiallyuseful risk management tools, for various reasons, have been previously unavailable.Two such tools which could help livestock producers achieve the overall goal ofmanaging net income risk are a program for managing feed ingredient nutrient and pricevariability in the selection of minimum cost feed rations and government subsidizedlivestock price insurance.Due to lack of data and limited computational …

Mcnair Research Journal

Georgia Southern University McNair Scholars Journal (Archived)

• Comparing Aerobic And Anaerobic Physical Activity Utilizing A Three Site Skinfold Shawnae Allen

• Theory, laser light, and the adiabatic approximation Shannon Anderson

• Perceptions Of Elementary Gifted Students Kalesha Brown

• Population Structure Of The Blacklegged Tick, Ixodes Scapularis, In Eastern United States Using Microsatellite DNA Markers Shahnjayla K. Connors
  

• The Growing Minority: A Study Of Local Reactions To The Increasing Latino Population In Southeast Georgia Miranda Davis
  

• Assessing The Economic Impact Of The School Information Technology At Georgia Southern Mary Dowling
  

• The Desegregation of Law Enforcement in a Rural Community: Statesboro, Georgia Ebony Starla Halliburton
  

• Understanding The Racial Gap In Healthcare: …

Pervaporation Of Solvent Mixtures Using Polymeric And Zeolitic Membranes: Separation Studies And Modeling, Dhaval S. Shah

University of Kentucky Doctoral Dissertations

The separation characteristics of binary alcohol-water mixtures were studied overa wide range of feed concentration and temperature using polymeric and zeoliticpervaporation membranes. For the hydrophilic PVA membrane, the total flux (at 55 0C)for the ethanol-water system decreased from 0.45 to 0.05 kg/m2/hr as the feed ethanolconcentration was increased from 30 to 95 wt. %. The separation factor (water/ethanol)was found to increase by about 100 times for the same range of concentration. TheUNIQUAC theory was used to predict the activity of binary alcohol-water mixtures in thePVA membrane. The UNIQUAC theory successfully takes into account the nonidealitiespresent in the alcohol/water-PVA membrane system. …

Implementation Costs Of Kentucky's Erosion Control Best Management Practices For Skid Trails, Bennett Scott Shouse

University of Kentucky Master's Theses

This paper describes a study designed to determine average labor and machine times required to implement erosion control and revegetation best management practices (BMPs) for skid trails in Kentucky. Labor and machine activities were recorded for 14,400 feet of skid trail on 10 nonindustrial private logging sites. Water bar construction and reshaping activities such as filling ruts and berm removal were filmed continuously with a video camera and then analyzed using time-motion study techniques. Labor activities for revegetation such as seeding and application of fertilizer were also timed. The average total machine time for retirement activities per 1000 feet was …

Piv Measurements Of Channel Flow With Multiple Rib Arrangements, Harald Roclawski

University of Kentucky Master's Theses

A model of a gas turbine blade cooling channel equipped with turbulators and a backward facing step geometry was examined. Up to four turbulators oriented cross-stream and inclined 45° to the flow direction were mounted in the channel. The blockage ratio b/H of the turbulators and the height h/H of the backward facing step was 0:125 and 0:14 respectively. The number of turbulators as well as their size was varied. In a preliminary investigation, hot-wire and pressure measurements were taken for three different Reynolds numbers (5,000, 12,000, 18,000)in the center plane of the test section. Subsequently, particle image …