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Marine Paleoecology Of The Fivemile Member Of The Hinton Formation, Upper Mississippian, West Virginia And Virginia, Thomas R. Cawthern
Marine Paleoecology Of The Fivemile Member Of The Hinton Formation, Upper Mississippian, West Virginia And Virginia, Thomas R. Cawthern
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Fivemile and Eads Mill members of the upper part of the Hinton Formation are two significant marine zones that occur within the Mauch Chunk Group in southwestern Virginia and southern West Virginia.;Multivariate analyses of binary fossil data for the Fivemile Member were performed in order to determine any underlying paleoecologic signals. Analyses of the data sets indicate that this member is dominated by a euryhaline fauna in four of the five locations studied. Euryhaline fauna characteristic of the Fivemile Member include the brachiopod Lingula, the bivalves Modiolus and Septimyalina, and ostracods. The geographic distribution and richness of these dominant …
College Students' Perceptions Of Dialects, Leigh Smitley
College Students' Perceptions Of Dialects, Leigh Smitley
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this investigation was to determine college students' perceptions of their own dialects and 4 specific dialects common to the English language. To determine this, the investigator developed a 3-part survey (Appendices H, I, J). On Part I, respondents completed identifying information. On Part II, they rated 9 general Likert Scale items related to dialect. On Part III, they completed the same semantic differential scale for speakers who represented 4 different dialects: Appalachian-American, Eastern-American, General-American, and African-American. There were 2 speakers for each dialect, i.e., 1 male and 1 female.;On Part I, respondents who completed a 3-part survey …
Teacher Perceptions Of The Effectiveness Of The Social Studies Teacher Training Program At Tabouk Teachers' College In Saudi Arabia, Awad Hamad Alhwiti
Teacher Perceptions Of The Effectiveness Of The Social Studies Teacher Training Program At Tabouk Teachers' College In Saudi Arabia, Awad Hamad Alhwiti
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of the study was to examine and evaluate the effectiveness of the social studies teacher training program in Tabouk Teachers' College in Saudi Arabia. This research addressed six questions concerning teacher perceptions regarding the effectiveness of the teacher preparation programs in Tabouk Teachers' College. These questions examined teacher perceptions of the effectiveness of preparation they received for teaching in schools in Saudi Arabia. This study included teachers who completed student teaching and who graduated with a major in social studies. The 40-item instrument used to gather data included demographics, internship, instructor effectiveness, curriculum, teaching skills, classroom management, and …
Evaluating The Effective Peak Capacity Of A Saw-Tooth Gradient For Reverse-Phase High Performance Liquid Chromatography Separation Of Proteins And Peptides, Guimei Cai
Graduate Theses, Dissertations, and Problem Reports (ETD)
The performance of saw-tooth gradient for comprehensive proteome analysis is evaluated using model proteins and a low molecular weight human serum by reverse-phase high performance liquid chromatography. The peak splitting and number of peptides detected is used to characterize the effective peak capacity of the saw-tooth gradient as a function of solvent strength change (Delta&phis;). Peak splitting demonstrated in experimental result as one single peptide or protein detected in more than one saw-tooth step. No peak splitting is observed directly from chromatograms for two model proteins by decreasing the solvent strength change (Delta&phis;) from 5.0%, 1.0%, to 0.1%. The numerical …
Basic Building Blocks Of Real-Time Data Analysis As Applied To Smart Oil Fields, Daniel G. Gonzalez
Basic Building Blocks Of Real-Time Data Analysis As Applied To Smart Oil Fields, Daniel G. Gonzalez
Graduate Theses, Dissertations, and Problem Reports (ETD)
The process of continuously monitoring and analyzing data in real time as well as reacting to events in an effective and more efficient manner represents one of the challenges in the oil and gas industry today. The existence of a computer model that is capable of evaluating data that enters a computer database in real time, performs different kinds of production analysis, and predicts reservoir performance opens new possibilities for field optimization. Having a model that alerts the engineers of abnormal situations during production operations will help to decrease the time of reaction to such events and as a result …
Pressure Deflection Behavior Of Candidate Materials For A Morphing Wing, Christopher Griffin
Pressure Deflection Behavior Of Candidate Materials For A Morphing Wing, Christopher Griffin
Graduate Theses, Dissertations, and Problem Reports (ETD)
The research presented in this thesis evaluates different materials that are candidates to be used as a flexible skin on a morphing wing. A morphing wing has come to be known as any wing that changes shape. Although there has been a great amount of research involved in designing morphing mechanisms, the information for applicable wing skin material has been limited. A morphing wing skin needs to be flexible enough to deflect and morph to a new shape given a suitable amount of force, yet strong enough to resist the aerodynamic forces encountered during flight. It also must remain elastic …
Investigation Of The Stress Induced Properties Of Coke During Carbonization, James Joshua Maybury
Investigation Of The Stress Induced Properties Of Coke During Carbonization, James Joshua Maybury
Graduate Theses, Dissertations, and Problem Reports (ETD)
The large polycyclic aromatic plates within coal tar pitches do not flow freely enough to organize into large anisotropic domains during pyrolytic carbonization. It was hypothesized that mechanical shear stress might accomplish that orientation. To test the hypothesis a reactor and stirring mechanism were designed and constructed to test crystalline formation behavior during carbonization. The work shows a unique method for manipulating the crystalline structure of coke. The coke was derived from a coal tar pitch with an initial softening point of 147°C. During the pyrolytic devolatilization of the pitch, a shearing stress was applied mechanically. The stress promoted oriented …
The Effect Of Moisture Addition With A Mold Inhibitor On Feed Manufacture, Pellet Quality, And Broiler Performance, John M. Hott
The Effect Of Moisture Addition With A Mold Inhibitor On Feed Manufacture, Pellet Quality, And Broiler Performance, John M. Hott
Graduate Theses, Dissertations, and Problem Reports (ETD)
Commercial broilers are typically fed pelleted diets because of the resulting improvements in bird performance and ease of transportation. Feed and feed manufacturing costs account for 60--70% of the total costs incurred in a broiler production system. Feed manufacturers are constantly searching for ways to decrease production costs while maintaining high pellet quality. Moisture addition at the mixer has been shown to increase pellet quality and decrease pellet mill energy consumption. However, past literature has incorporated high moisture addition levels that may be impractical in an industrial setting. The objective of this study was to determine the effects of moisture …
State Minimization Problems In Finite State Automata, Chris Tauras
State Minimization Problems In Finite State Automata, Chris Tauras
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this thesis, we analyze the problem of state minimization in 2-MDFAs. The class of 2-MDFAs is an extension of the class of DFAs, allowing a small amount of nondeterminism; specifically two start states. Since nondeterminism allows finite automata to be more succinct, it is worthwhile to investigate the problem of minimizing such finite automata. In the case of unbounded non-determinism, i.e., NFAs, such automata can be exponentially more succinct than DFAs [1], but the corresponding minimization problem is PSPACE-complete [2]. Even in the case of 2-MDFAs, which are only polynomially more succinct than DFAs, the minimization problem remains non-trivial; …
Relationship Between Food Insecurity And Overweight In Preschool-Aged Children In Rural West Virginia, Melissa Webber
Relationship Between Food Insecurity And Overweight In Preschool-Aged Children In Rural West Virginia, Melissa Webber
Graduate Theses, Dissertations, and Problem Reports (ETD)
The prevalence of overweight among adults and children continues to increase. The purpose of this study was to evaluate demographic factors that may be associated with an increase in a child's weight status. Subjects were children aged 2 to 6 years old in two southern West Virginia counties, McDowell and Mercer. Children were weighed and measured, and BMI was calculated. Parents or other caregivers were asked to complete a questionnaire regarding child's age, household food security, and parents' age, height and weight, education level, and hours worked per week.;A positive association between food insecurity and overweight among children was present …
De-Wetting Of Cobalt Thin Films On Sapphire, Jorge Espinosa
De-Wetting Of Cobalt Thin Films On Sapphire, Jorge Espinosa
Graduate Theses, Dissertations, and Problem Reports (ETD)
Cobalt thin films 4 nm thick were deposited via metal electron-beam epitaxy on sapphire (110). The films were annealed above 500°C and scanned in-situ with atomic force microscopy upon annealing. The films underwent a roughening transition above 500°C which is highly time dependent. The film's roughness increased with time with a power law of rho ∼ (t-- t0)alpha, with alpha ranging from 0.16 to 0.21, and de-wetted the sapphire substrate above 590°C. The dynamics of single clusters showed an exponential growth of their height with increasing time at early stages of the annealing process which is consistent with surface instabilities. …
Biolayer Modeling And Optimization For The Sparrow Biosensor, Ke Feng
Biolayer Modeling And Optimization For The Sparrow Biosensor, Ke Feng
Graduate Theses, Dissertations, and Problem Reports (ETD)
Biosensor direct detection of molecular binding events is of significant interest in applications from molecular screening for cancer drug design to bioagent detection for homeland security and defense. The Stacked Planar Affinity Regulated Resonant Optical Waveguide (SPARROW) structure based on coupled waveguides was recently developed to achieve increased sensitivity within a fieldable biosensor device configuration. Under ideal operating conditions, modification of the effective propagation constant of the structure's sensing waveguide through selective attachment of specific targets to probes on the waveguide surface results in a change in the coupling characteristics of the guide over a specifically designed interaction length with …
Combining Complementary Formal Verification Strategies To Improve Performance And Accuracy, David R. Owen
Combining Complementary Formal Verification Strategies To Improve Performance And Accuracy, David R. Owen
Graduate Theses, Dissertations, and Problem Reports (ETD)
Software is increasingly complex and is used in increasingly critical applications. Sophisticated techniques are available for verifying that software systems work correctly, but these techniques can be very difficult and expensive to use. Researchers have developed tools to automatically verify software models, but using these tools can still be very costly, in terms of manual effort and expertise required to build accurate models and to formally specify required properties, and also in terms of the time and memory required to run these tools. Much work has been done to simplify the process of building software models and to improve the …
Integer Flow And Petersen Minor, Taoye Zhang
Integer Flow And Petersen Minor, Taoye Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tutte [45] conjectured that every bridgeless Petersen-minor free graph admits a nowhere-zero 4-flow. Let P10 m&d1; ) be the graph obtained from the Petersen graph by contracting mu edges from a perfect matching. In chapter 1 we prove that every bridgeless P10 3&d1; -minor free graph admits a nowhere-zero 4-flow.;Walton and Welsh [48] proved that if a coloopless regular matroid M does not have a minor in {lcub}M(K 3,3), M*(K5){rcub}, then M admits a nowhere zero 4-flow. Lai et al [27] proved that if M does not have a minor in {lcub}M( K5), M*(K5){rcub}, then M admits a nowhere zero …
Control Of A Swept Wing Tailless Aircraft Through Wing Morphing, Richard W. Guiler
Control Of A Swept Wing Tailless Aircraft Through Wing Morphing, Richard W. Guiler
Graduate Theses, Dissertations, and Problem Reports (ETD)
Inspired by flight in nature, work done by Lippisch, the Hortens, and Northrop offered insight to achieving the efficiency of bird flight with swept-wing tailless aircraft. Tailless designs must incorporate aerodynamic compromises for control, which have inhibited potential advantages. A morphing mechanism, capable of changing the twist of wing and that can also provide pitch, roll and yaw control for a tailless swept wing aircraft is the first step to a series of morphing techniques, which will lead to more fluid, bird-like flight. This research focuses on investigating the design of a morphing wing to improve the flight characteristics of …
Factors That Influence The Effectiveness Of Assessment Plans In The Improvement And Sustainment Phase In Colleges And Universities, Christopher A. Mccullough
Factors That Influence The Effectiveness Of Assessment Plans In The Improvement And Sustainment Phase In Colleges And Universities, Christopher A. Mccullough
Graduate Theses, Dissertations, and Problem Reports (ETD)
Assessment in higher education has become increasingly important throughout the past 20 years. Institutions of higher education engage in student outcomes assessment for a plethora of purposes.;The researcher conducted this study to investigate current assessment practices at the undergraduate program level. The researcher determined the effectiveness of assessment plans within specific disciplines at institutions that have implemented and sustained their assessment plans. The researcher also identified the degree to which related institutional commitments and resources were provided to support assessment the assessment process. Faculty satisfaction with the assessment plan was also examined.
Emotional Intelligence Competencies Of Department Chairs In The West Virginia State Community College System And Their Faculty Members' Perceptions Of Organizational Climate, Paul L. Milhoan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine if a significant relationship exists between faculty members' perceptions of organizational climate and their chairs' emotional intelligence competencies. The organizational climate description questionnaire for academic departments of colleges and universities (OCDQ-HE-Partial) was used to assess faculty members' perceptions of organizational climate. Chairs' emotional intelligence competencies were measured by the Bar-On Emotional Quotient Inventory (EQ-i). Faculty members and chairs were all employees of the West Virginia State Community and Technical College System.;The entire population of chairs (N=40) and the entire population of faculty members in the West Virginia Community and Technical College System …
Advanced Modeling For Small Glass Furnaces, Heath A. Morris
Advanced Modeling For Small Glass Furnaces, Heath A. Morris
Graduate Theses, Dissertations, and Problem Reports (ETD)
One of the most pressing issues facing the glass industry is improving energy efficiency. The largest energy user in any glass company is the melting furnace or furnaces. While large float glass and container glass companies have developed sophisticated control systems, little work has been done until recently for small glass furnaces. This thesis extends the work of Holladay (2005), in which an observer was developed to estimate the temperature of glass in a small day-tank furnace. The current work eliminates the assumption of homogeneous glass melt and refractory temperatures, and develops a furnace model suitable for implementation with a …
Specifying Security Requirements Improvement For Ieee Standard 830, Jacob D. Mccarty
Specifying Security Requirements Improvement For Ieee Standard 830, Jacob D. Mccarty
Graduate Theses, Dissertations, and Problem Reports (ETD)
This paper presents a concept on how the software requirements specifications template provided by IEEE Standard 830 could be updated to ensure that security is analyzed during the early stages of the software development lifecycle. This improved security requirement in the software requirements specifications will ensure that software developers will have a more clear understanding of how to protect digital information.
Solidification Modeling Of Iron Castings Using Solidcast, Piyapong Muenprasertdee
Solidification Modeling Of Iron Castings Using Solidcast, Piyapong Muenprasertdee
Graduate Theses, Dissertations, and Problem Reports (ETD)
SOLIDCast is a casting simulation software program which can simulate thermal changes and heat transfer in the solidification process of a casting. It assists the user to visualize the solidification process of a particular casting. The program offers functions to help guide a user in producing gating and riser designs and also have functions which produce visual outputs showing possible problem areas and defects which may occur in a casting. It can help shorten the lead time and reduce the loss in the trial casting stage.;This thesis consists of studies to determine the important capabilities and limitations of the software, …
Strain Energy Density Based Failure Criterion For Gfrp Coupons Under Tension And Bending, Deepika Vadlamani
Strain Energy Density Based Failure Criterion For Gfrp Coupons Under Tension And Bending, Deepika Vadlamani
Graduate Theses, Dissertations, and Problem Reports (ETD)
Accurate prediction of failure strength is one of the major concerns in the design of fabric reinforced polymer composites. Though there are numerous failure criteria available, each criterion suits particular test data, and also lack of critical experimental results makes it difficult to assess the accuracy of these criteria. Hence, much research needs to be done to understand the mechanical characterization of fabric based polymer composites and develop a generalized theory considering the overall properties, so that the proposed theory is valid for a wide range of experimental data.;In this study, five different E-glass/vinyl ester symmetric laminates (unidirectional, bi-directional, tri-directional …
Modeling The Fiberglass Spinning Process, Jeremy S. Watts
Modeling The Fiberglass Spinning Process, Jeremy S. Watts
Graduate Theses, Dissertations, and Problem Reports (ETD)
Two main processes are performed in the manufacturing of fiberglass filters. This thesis looks at the first of these processes, which is known as the spinning process in the industry. At the subject plant, melted glass is drawn from a moving furnace through a plate with several #16 sized holes acting as tiny nozzles and spun onto a large-diameter drum spinning at a set speed. The glass strands after being drawn have an average diameter of 27-30 microns. While the glass is being spun on the drum, a special binder is applied to the glass strands that will later be …
Epithelial Mechanisms In Airway Responses Induced By Hyperosmolarity, Yi Jing
Epithelial Mechanisms In Airway Responses Induced By Hyperosmolarity, Yi Jing
Graduate Theses, Dissertations, and Problem Reports (ETD)
There is airway dilation in normal people but obstruction in asthmatic patients during exercise; this has been thought to be initiated by hyperventilation causing evaporative water loss and hyperosmolarity of the airway surface liquid (ASL). In animal experiments the epithelium can detect osmolarity increases in the ASL and mediate relaxation of airway smooth muscle by releasing epithelium-derived relaxing factor (EpDRF), while in asthmatic patients this local regulatory function could be altered because of damage to epithelium. Challenged by hyperosmolarity, epithelial cells undergo shrinkage, volume-related ion transport, and release regulatory mediators, such as EpDRF. The changes in epithelial ion transport and …
Aerosol Generation And Entrainment Model For Cough Simulations, Cem Ersahin
Aerosol Generation And Entrainment Model For Cough Simulations, Cem Ersahin
Graduate Theses, Dissertations, and Problem Reports (ETD)
The airborne transmission of diseases is of great concern to the public health community. The possible spread of infectious disease by aerosols is of particular concern among health-care workers and emergency responders, who face a much greater risk of exposure to these hazards than does the general public. Some diseases, such as influenza, spread by dissemination and inhalation of aerosols of small droplet nuclei that are generated by coughing and remain airborne for an extended time. For that reason a better understanding of the generation of aerosols is important. Therefore, the main objective of this study is to investigate the …
Numerical Study Of Wingtip Shed Vorticity Reduction By Wing Boundary Layer Control, Jose Alejandro Posada
Numerical Study Of Wingtip Shed Vorticity Reduction By Wing Boundary Layer Control, Jose Alejandro Posada
Graduate Theses, Dissertations, and Problem Reports (ETD)
Wingtip vortex reductions have been obtained by Boundary Layer Control application to an AR=1.5 rectangular wing using a NACA 0012 airfoil. If wingtip shed vorticity could be reduced significantly, then so would induced drag resulting in improved cruise fuel economy. Power savings would be even more impressive at low flight speed or in climb.;A two dimensional wing produces lift without wingtip vorticity. Its bound vorticity, Gamma, equals the contour integral of the boundary layer vorticity gamma or Gamma = ∮gamma · dl. Where the upper and lower boundary layers meet at the cusped TE, their local static pressure pu=pl then …
Growth Of Diesel Exhaust Particulate Matter In A Ventilated Mine Tunnel, Glen A. Wilt
Growth Of Diesel Exhaust Particulate Matter In A Ventilated Mine Tunnel, Glen A. Wilt
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objective of this work was to study the formation and evolutionary characteristics of aerosols, originating from the exhaust plume of a diesel engine operating in a ventilated mine tunnel. To extract these characteristics, precise cross-sectional scalar exhaust maps of CO2, temperature, and aerosol concentration were generated and used to track the time averaged axial development of the plume. These maps were then used to position aerosol size distribution samples within critical regions of the plume. This approach was found to provide an efficient and thorough record of aerosol formation and evolution, as a result of naturally dispersed diesel exhaust …
A Robust Hybrid-Arq Protocol For Relay Networks., Syed Amaar Ahmad
A Robust Hybrid-Arq Protocol For Relay Networks., Syed Amaar Ahmad
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis explores wireless relay networks using the hybrid-ARQ protocol. Relay networks exploit spatial diversity from ‘redundant’ nodes in contrast to the single path of classic networks. Thus they show superior performance in dealing with fading and interference. The hybrid-ARQ technique under the constraints of noncoherent orthogonal modulation and hard-decision decoding is the primary focus of the thesis. Information theoretic bounds on the performance for such a system are derived. The extension of hybrid-ARQ from a point-to-point protocol to a broadcast-oriented relaying protocol called HARBINGER (hybrid-ARQ based intra-cluster geographic relaying) was presented in a 2005 paper by Zhao and Valenti. …
An Exploratory Study Of The Application Of Implementation Of Ecers Criteria., Corina L. Ward
An Exploratory Study Of The Application Of Implementation Of Ecers Criteria., Corina L. Ward
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examines whether attending Module One of the Experienced ECERS-R Observer Training corresponds to classroom changes as reported by participating teachers. Teachers attended the module training and were to make changes in their classrooms to improve quality. Six months after attendance at the workshop, participants were emailed a questionnaire that consisted of a listing of the subscales and items on the ECERS-R. The teachers were to mark what items they changed after attending the module and also comment on how they improved their classroom. Teachers reported changes to their classrooms. Although there were small modifications, the reported changes were …
"And A Little Child Shall Lead Them": Romanticism And Quakerism In Edward Hicks' Peaceable Kingdoms., Alison E. Keller
"And A Little Child Shall Lead Them": Romanticism And Quakerism In Edward Hicks' Peaceable Kingdoms., Alison E. Keller
Graduate Theses, Dissertations, and Problem Reports (ETD)
Edward Hicks, the American Quaker minister and artist, painted a series of works entitled The Peaceable Kingdom between 1820 and 1849. This series of paintings is based on the Old Testament passage Isaiah 11:6. This thesis explores the intersection of Quakerism and Romanticism in nineteenth-century America which is represented in Hicks‟ Peaceable Kingdoms. Romantic themes in the Peaceable Kingdom are the concept of childhood, the presence of Nature, and the ideal of the noble savage. Romanticism in nineteenth-century America was impacted by Christian Romanticism and the development of special educational, social, and spiritual roles for children. The presence of Nature …
Kinetics Of Corrosion And Dross Build-Up In Molten Zn-Al Systems., Jing Xu
Kinetics Of Corrosion And Dross Build-Up In Molten Zn-Al Systems., Jing Xu
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research investigates the mechanisms of corrosion attack and dross build-up in molten Zn-Al systems. In hot-dip coating processes, molten Zn-Al baths corrode the submerged hardware, thus requiring frequent line stoppages for maintenance, repair, and replacement of parts. Similarly, containment of liquid Al/Al alloy during melting and recycling processes leads to corrosion of refractory walls, contamination of melt, and subsequent product quality deterioration as well as energy loss. The goals of the research are to (1) explore the corrosion mechanism in molten Zn/Zn-Al baths by studying corrosion rates and interfacial metallography; (2) determine the kinetics of dross adhesion to the …