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Graduate Theses, Dissertations, and Problem Reports (ETD)

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Impact Of Auditory And Visual Distractors Upon Learning A Manual Assembly Task In Older Workers, Diana J. Schwerha May 2004

Impact Of Auditory And Visual Distractors Upon Learning A Manual Assembly Task In Older Workers, Diana J. Schwerha

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research investigated the impact of age upon learning a manual assembly task in the presence of visual and auditory distractors in males and females ranging in age between 18 and 65 years. Four phases of learning were studied: the number of initial error trials, the number of times the instructional video was watched, the total number of trials needed to complete the experiment, and trial time. Age was only found to be a significant factor for the total number of trials; subjects aged 51--65 took 31% more trials than the younger subjects. Additionally, older subjects who were exposed to …

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Cohesive Zone Model For Facesheet -Core Interface Delamination In Honeycomb Frp Sandwich Panels, Weiqiao Wang May 2004

Cohesive Zone Model For Facesheet -Core Interface Delamination In Honeycomb Frp Sandwich Panels, Weiqiao Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

The focus of this dissertation is on developing efficient modeling techniques to study facesheet-core interface delamination in honeycomb fiber-reinforced polymer (HFRP) sandwich panels. Delamination problems are usually treated from a fracture mechanics point of view. However, interface delamination is generally very complex in nature and difficult to solve, because it involves not only geometric and material discontinuities, but also the inherently coupled Mode I, II and III fracture in layered material systems attributed to the well-known oscillatory singularity nature of the stress and displacement field in the vicinity of the delamination crack tip. One of the key issues in this …

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Teaching Practices Of Adjunct And Full -Time Faculty By Inventories Of Good Practice, Joyce Ricker Kronberg May 2004

Teaching Practices Of Adjunct And Full -Time Faculty By Inventories Of Good Practice, Joyce Ricker Kronberg

Graduate Theses, Dissertations, and Problem Reports (ETD)

Institutions of higher education are under increasing pressure to manage with less financial support from the state legislatures. In order to reduce costs and provide greater flexibility, many colleges and universities are turning to adjunct faculty for a greater portion of their teaching in the classroom. However, few studies have measured the quality of instruction displayed by adjunct faculty.;The objective of this study is to assess the frequency of practice for several aspects related to teaching quality between full-time and part-time faculty. Three community colleges participated in the faculty survey: Seven Principles For Good Practice In Undergraduate Education.;In addition, the …

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Effects Of Drought On The Growth Of Young And Mature Temperate Forests In West Virginia, Nicholas R. Doner May 2004

Effects Of Drought On The Growth Of Young And Mature Temperate Forests In West Virginia, Nicholas R. Doner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent research suggests that the temperate deciduous forests of the eastern United States may have played a significant role in the sequestration of atmospheric carbon dioxide over the last 100 years. However, little is known about the role of forest management and climatic variability on the productivity of these forests. The purpose of this study was to determine the variation in aboveground production between two different aged forest stands and to evaluate the effect of drought on inter-annual variation in productivity. Aboveground net primary production (ANPP) was compared with precipitation and the Palmer Drought Severity Index to determine the effects …

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Evaluation Of The Compacted Aggregate Resistance Test, Sean P. Rafferty May 2004

Evaluation Of The Compacted Aggregate Resistance Test, Sean P. Rafferty

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Compacted Aggregate Resistance (CAR) test is a procedure used to analyze the quality of asphalt. It is a punch shear test that indirectly measures the shape and angularity of fine aggregates. The CAR test is in the developing process of replacing the current Superpave standard for fine aggregate angularity.;The primary objective of this paper is to determine if there is a direct correlation between the results from the CAR test and the quality of asphalt that corresponds to the results from an Asphalt Pavement Analyzer. Currently, there has been good quality Hot Mix Asphalt (HMA) that cannot pass the …

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Evaluation Of Moment Redistribution For Hybrid Hps 70w Bridge Girders, Lili Yang May 2004

Evaluation Of Moment Redistribution For Hybrid Hps 70w Bridge Girders, Lili Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent studies have demonstrated that the use of hybrid steel bridge I-shaped girders (specifically sections incorporating Grade 50 webs and High Performance Steel (HPS) 70W flanges) can produce steel weight savings and overall design economy for a wide range of typical steel bridge superstructures. Additionally, recent research at WVU in collaboration with others has led to proposed simplified moment redistribution techniques that have been adopted by AASHTO. These procedures are similar in nature to existing limits that permit up to 10% of the maximum factored negative bending moments to be redistributed to positive bending regions in members comprised of compact …

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Three Essays On Transfers, Trade Policy And Welfare, Jonathan Munemo May 2004

Three Essays On Transfers, Trade Policy And Welfare, Jonathan Munemo

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this dissertation is to incorporate foreign capital goods and underemployment in the welfare analysis of transfers and trade policies. We build a two-good, two-country general equilibrium model, which takes into account the use of foreign capital in the import competing sector of a developing country. The developing country receives transfers in the form of financial resources or capital goods from a developed country. Financial transfers induce changes in commodity terms of trade, which in turn affects capital inflows and the price of imported capital. The welfare effect of financial transfers is considered in the context of induced …

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Cascade Radical Cyclizations Of Benzannulated Enyne-Allenes And Development Of New Synthetic Strategies For Novel Polycyclic Aromatic Compounds, Yonghong Yang May 2004

Cascade Radical Cyclizations Of Benzannulated Enyne-Allenes And Development Of New Synthetic Strategies For Novel Polycyclic Aromatic Compounds, Yonghong Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

The cascade radical cyclization of benzannulated enyne-allene generated in situ from enediynyl propargylic alcohols promoted by thionyl chloride via an SNi' reaction provides an efficient synthetic pathway to 11H-benzo[b]fluoren-11-ols and related compounds. The simplicity of the synthetic sequence and the mildness of the reaction condition make this cascade reaction sequence useful for the construction of polycyclic aromatic compounds. Interestingly, when this strategy was employed for the systems having two benzannulated enyne-allene units, it was quite unexpected that the reaction sequence led to the formation of highly twisted 1,1'-dialkyl-9,9'-bifluorenylidenes involving an unusual cleavage of a benzene ring, and spiro[1H-cyclobut[ a]indene-1,9'-[9H]fluorenes] along …

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Critical Features Of Antigen-Specific And Allospecific Recognition By Cytotoxic T Lymphocytes, Marc A. Frankenberry May 2004

Critical Features Of Antigen-Specific And Allospecific Recognition By Cytotoxic T Lymphocytes, Marc A. Frankenberry

Graduate Theses, Dissertations, and Problem Reports (ETD)

In general, CD8+ T lymphocytes respond to a single class I MHC/peptide complex, a phenomenon known as "MHC self-restriction". We previously reported that CD8+ CTLs from C57BL/6 mice were restricted to both H-2Kb and H-2Db when responding to the horse cyt c-derived peptide, p41--49. In Part I of this dissertation, we examine structural features of H-2Kb/cyt c and H-2Db/cyt c complexes responsible for dual recognition. B6.H-4.1c, a representative cloned CTL, was induced by similar concentrations of native peptide added to either H-2Kb- or H-2Db-expressing targets. Furthermore, the dissociation rates for both H-2Kb/cyt c and H-2D b/cyt c were comparable, but …

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Formation And Characterization Of Metal And Metal Oxide Nanoparticles, Garry Glaspell May 2004

Formation And Characterization Of Metal And Metal Oxide Nanoparticles, Garry Glaspell

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation contains two parts. The first part is focused on Laser Vaporization Controlled Condensation (LVCC). Silver nanoparticles of controlled size were synthesized by this method in order to produce a Surfaced Enhanced Raman Scattering (SERS) active material. We have investigated the effects of particle size on SERS enhancement and how the addition of halides can further increase the limits of detection. We have also explored using LVCC to synthesize cobalt oxide nanoparticles. This is significant since a simple chemical route doesn't currently exist. Finally, we have reported the synthesis of cobalt nitrate hexahydrate by this method using cobalt metal, …

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Insertion Of Genes And Operons Into The Escherichia Coli Genome Through Targeted Recombination, Dennis Coss Jan 2004

Insertion Of Genes And Operons Into The Escherichia Coli Genome Through Targeted Recombination, Dennis Coss

Graduate Theses, Dissertations, and Problem Reports (ETD)

A method whereby DNA sequences of varying size may be accurately inserted into pre-determined locations within the Escherichia coli genome was developed. Using a binary vector system that takes advantage of either the E. coli RecET enzyme tandem or bacteriophage lambda's Redalphabeta recombinatory proteins, this method has the benefits of being both inducible and self-degrading, thereby offering a level of control to the experimenter as well as alleviating any problems that may be associated with leaving residual DNA in the bacterium. To demonstrate the usability of this system, two antibiotic resistance genes, as well as the pyrroloquinoline quinone (pqq) and …

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Ice Hockey Players' Perceived Legitimacy Of Aggression: An Investigation At The Youth, High School, Collegiate, And Professional Levels., Amanda J. Visek Jan 2004

Ice Hockey Players' Perceived Legitimacy Of Aggression: An Investigation At The Youth, High School, Collegiate, And Professional Levels., Amanda J. Visek

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent incidents of aggressive and violent behavior in professional ice hockey have caused many in and out of the sport world to again question the utility of such behavior. The purpose of this investigation was to examine male ice hockey players’ (N=85) perceived legitimacy of aggression and professionalization of attitudes across developmental age and competitive level. Results of the investigation indicate as these players increased in age and competitive level, their perceived legitimacy of aggressive, rule-violating behavior increased, and their attitudes about sport became increasingly professionalized. The practical implications of these results are discussed within the context of social learning …

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Formal Total Synthesis Of Carbazole Alkaloids And Attempted Synthesis Of 1-Substituted β-Carbolines., Xiaomei Yu Jan 2004

Formal Total Synthesis Of Carbazole Alkaloids And Attempted Synthesis Of 1-Substituted β-Carbolines., Xiaomei Yu

Graduate Theses, Dissertations, and Problem Reports (ETD)

A mild and efficient route for the synthesis of substituted carbazolones has been developed. This novel procedure includes two consecutive palladium-catalyzed reactions, an intermolecular Stille coupling followed by an intramolecular reductive Nheteroannulation. This new approach was successfully applied to the formal total synthesis of several naturally occurring carbazole alkaloids including clausenol, clausenine, clausalene and glycozoticine. These new syntheses are generally effective and produce carbazolones in high overall yields. In addition, all attempts to apply a similar method to the synthesis of 1-substituted βcarbolines produced impure products.

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The Effects Of Age, Estrogen And Environmental Enrichment On Neurogenesis, Dendritic Spine Density And Synaptogenesis In The Hippocampus., Tina Marie Sager Jan 2004

The Effects Of Age, Estrogen And Environmental Enrichment On Neurogenesis, Dendritic Spine Density And Synaptogenesis In The Hippocampus., Tina Marie Sager

Graduate Theses, Dissertations, and Problem Reports (ETD)

Over 43 million women today are nearing or have passed menopause and 21 million more will be entering their climacteric period over the next decade. Cognitive symptoms such as poor memory and the inability to concentrate have been reported in perimenopausal and menopausal women. The goal of this study was to determine both the single and combined effects that age, estrogen and environmental enrichment have on neurogenesis, synapotgenesis, and dendritic spine density in the hippocampus region of the female rat brain. Ovariectomized, female Sprague-dawley rats were administered either estrogen replacement or a vehicle. The rats were then subjected to either …

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A Study In The Process Modeling Of A Fuel Cell/Microturbine Hybrid System Under Ambient Conditions., Michael S. Shelton Jan 2004

A Study In The Process Modeling Of A Fuel Cell/Microturbine Hybrid System Under Ambient Conditions., Michael S. Shelton

Graduate Theses, Dissertations, and Problem Reports (ETD)

As energy demands increase and the associated costs increasing with the demand, newer energy alternatives are becoming more important to society. Although not new, fuel cell technology is taking a lead role in the quest for a cleaner and less expensive energy source. High efficiencies on the order of 50% are now possible with stand-alone fuel cells. When coupled with a microturbine, efficiencies of around 70% may be expected. However, the fuel cell/microturbine hybrid has inherent problems of stability and unpredictable response to adverse transients that first must be addressed to make this technology viable. The National Energy Technology Laboratories …

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The Breaking Of The Vessels: Identity And The Traditions Of Jewish Mysticism In Gustav Meyrink's "Der Golem"., Eva Christina Schmidt Jan 2004

The Breaking Of The Vessels: Identity And The Traditions Of Jewish Mysticism In Gustav Meyrink's "Der Golem"., Eva Christina Schmidt

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this thesis is to explore the use of symbols and imagery originating from the traditions of Jewish Mysticism in Gustav Meyrink`s most noted work Der Golem, as they relate to the overall theme of identity. Philosophic and religious traditions of early Gnostic teachings, Hebrew and Aramaic texts such as the Book of Enoch will be compared as part of the analysis of the Golem saga and the key topics featured in the novel. The myth of the Golem itself epitomises the struggle of the individual, the notion of creator and creature are recurring ideas in the novel. …

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Enhanced Solids Removal Design Based On Characterization Of Quiescent Zone Hydrodynamics In Flow-Through Aquaculture Systems., Andrea T. Rumberg Jan 2004

Enhanced Solids Removal Design Based On Characterization Of Quiescent Zone Hydrodynamics In Flow-Through Aquaculture Systems., Andrea T. Rumberg

Graduate Theses, Dissertations, and Problem Reports (ETD)

Typically, solids removal in flow-through aquaculture systems consists of movement of solids to a quiescent settling chamber from which they are removed after settling. Commonly used solids removal processes are time and labor intensive and generally inefficient. Due to expected increases in federal effluent discharge regulations, development of efficient quiescent zones is essential to future growth of the aquaculture industry. However, before alternate designs were considered, hydrodynamic properties of traditional systems needed studied to adequately establish baseline characteristics. Characterization was achieved using an Acoustic Doppler Velocimeter (ADV), which measured velocity in three dimensions. Solids settling properties were characterized using specific …

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Predicting Measures Of Diversity For Forest Regeneration Using Site And Overstory Variables: A Regression Approach., Jeffrey Wayne Jones Jan 2004

Predicting Measures Of Diversity For Forest Regeneration Using Site And Overstory Variables: A Regression Approach., Jeffrey Wayne Jones

Graduate Theses, Dissertations, and Problem Reports (ETD)

To create more timely estimates of understory woody plant characteristics, we developed a model suitable for predicting diversity in the understory of forested stands from commonly collected overstory information. We used individual measures of species abundance and species distribution as well as two diversity indices that combine the two aspects of species diversity. The objectives of this study were to (1) collect site, overstory, and understory information as part of a comprehensive forest inventory, (2) calculate overstory parameters and understory diversity measures, and (3) develop a regression model suitable for predicting ecological diversity measures of the woody understory based upon …

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The Influence Of Sexual Orientation And Gender On The Social Support Networks Of Middle-Aged And Older Adults., S. Melinda Spencer Jan 2004

The Influence Of Sexual Orientation And Gender On The Social Support Networks Of Middle-Aged And Older Adults., S. Melinda Spencer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Social support issues have not been examined extensively among middle-aged and older lesbian, gay, and bisexual (LGB) adults, despite evidence that the aging experience may differ between these individuals and same-aged heterosexuals. This study compared the structure (network composition) and function (positive and negative inter-personal interactions) of social support across gender and sexual orientation and how psychological well-being varied as a function of these variables. During this study, 105 participants were administered a survey in either a mail-back or an online format. No group differences emerged with regard to psychological well-being or overall social network size, but significant variations were …

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Pseudo Dynamic Metrics: Early Assessment Of Dynamic Behavior Of Software Systems., Rajesh Gunnalan Jan 2004

Pseudo Dynamic Metrics: Early Assessment Of Dynamic Behavior Of Software Systems., Rajesh Gunnalan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Software Metrics have become an integral part of software development and are used during every phase of the software development life cycle. Research in the area of software metrics tends to focus predominantly on static metrics that are obtained by static analysis of the software artifact. These static metrics are readily available through automated tools and are widely used. However software quality attributes such as performance, reliability and error rates depend on the dynamic behavior of the software artifact. Hence, estimating software quality attributes based on dynamic behavior (dynamic metrics) of software system is more accurate and realistic. Dynamic metrics …

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Scenic Design For Steve Martin's "Picasso At The Lapin Agile"., Tuesdee Long Jan 2004

Scenic Design For Steve Martin's "Picasso At The Lapin Agile"., Tuesdee Long

Graduate Theses, Dissertations, and Problem Reports (ETD)

This document is a record of the process involved in creating the scenery for West Virginia University’s 2004 production of Picasso at the Lapin Agile, by Steve Martin. The project was assigned to serve as partial fulfillment of the requirements of a Master of Fine Arts in Design and Theatre Technology, and this document completes the requirements for that degree. This thesis explains the progress of the design from its research and conceptualization to its realization and the resulting theatrical production on the stage. It includes a synopsis, criticism and history of the original production, and a self-evaluation of the …

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Sawtooth: Learning From Huge Amounts Of Data., Andres Sebastian Orrego Jan 2004

Sawtooth: Learning From Huge Amounts Of Data., Andres Sebastian Orrego

Graduate Theses, Dissertations, and Problem Reports (ETD)

Data scarcity has been a problem in data mining up until recent times. Now, in the era of the Internet and the tremendous advances in both, data storage devices and high-speed computing, databases are filling up at rates never imagined before. The machine learning problems of the past have been augmented by an increasingly important one, scalability. Extracting useful information from arbitrarily large data collections or data streams is now of special interest within the data mining community. In this research we find that mining from such large datasets may actually be quite simple. We address the scalability issues of …

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Influence Of Parenting Factors On Childhood Social Anxiety: Direct Observation Of Parental Warmth And Control., Kristine E. Rork Jan 2004

Influence Of Parenting Factors On Childhood Social Anxiety: Direct Observation Of Parental Warmth And Control., Kristine E. Rork

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of the present study was to determine the association of parenting behaviors with the level of social anxiety symptomatology in their children. Three parental factors, including parental socialization, control, and warmth were investigated in a sample of 31 two-parent families. Rather than solely rely upon retrospective questionnaires, this study incorporated direct observation and a Daily Activity Log to more accurately assess the qualities of social interaction. Moderate associations between parental control and child anxious symptomatology were found, with no support for the association between parental warmth and child anxiety. Implications, limitations, and future directions are discussed.

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Neodymium:Yag Laser Resonator Chip Design, Optical Characterization And Validation., Narasimha Rao Ayyalasomayajula Jan 2004

Neodymium:Yag Laser Resonator Chip Design, Optical Characterization And Validation., Narasimha Rao Ayyalasomayajula

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nd:YAG lasers are the most common solid state lasers and are found in many different optical configurations. Effective use of these lasers in remote, in-situ sensing and other applications requires compact size and efficient operation. This project targets the simplification and reduction of the size of these lasers by shaping the active media into a retro-reflecting slab and pumping it with an AlGaAs diode laser at 808nm. The Nd:YAG slab laser was reduced to a rectangular chip component of dimensions 10x12x2mm. The laser was constructed, tested and shown to successfully lase at 1064nm.The slab laser was operated in a pulsed …

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A Product Of Mexico: Truly Mexican Taste?, Maria E. Cazares Jan 2004

A Product Of Mexico: Truly Mexican Taste?, Maria E. Cazares

Graduate Theses, Dissertations, and Problem Reports (ETD)

Because people of all races, creeds and colors tend to view the world about them through their own eyes, or through the lenses of their own cultures (Fellows, 1972, p.39), it is logical to think that all kinds of visual expression differs from one culture to another, and that graphic design is not an exception. Coming from a place so rich in ancient and modern culture as is Mexico, I have been able to enjoy two very different experiences in a foreign country. On one hand, I came to the United States filled with the essence of being Mexican, and …

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Comparison Of The Sealing Ability Of Two Different Types Of Root Canal Obturation: Cold Lateral Compaction And The Continuous Wave Compaction Technique., Donald Wayne Hughart Jan 2004

Comparison Of The Sealing Ability Of Two Different Types Of Root Canal Obturation: Cold Lateral Compaction And The Continuous Wave Compaction Technique., Donald Wayne Hughart

Graduate Theses, Dissertations, and Problem Reports (ETD)

104 single rooted human teeth were randomly assigned to four groups, decoronated and instrumented with Gates Glidden drills, 0.06 taper ProFile files and hand files with NaOCL irrigant. Two groups were instrumented to working length with 0.06 ProFiles. Two groups were instrumented to within 1.0mm of the working length with 0.06 ProFiles and the last mm was prepared with a hand file. Two groups, one with hand filing and one without, were obturated using cold lateral compaction. Two groups were obturated using the continuous wave hybrid technique. The teeth were suspended vertically in India ink for 72 hours, cleared and …

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A Coalbed Methane Simulator Designed For The Independent Producers., Jalal Jalali Jan 2004

A Coalbed Methane Simulator Designed For The Independent Producers., Jalal Jalali

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study is to build a PC-Windows based model for two-phase onedimension water & gas system based on the formulation of the model developed by King and Ertekin in 1985. This model is written in Visual Basic 6.0. The advantage of this model over the King and Ertekin’s model is the ability of running the model on personal computers, graphical abilities for input and output, and solving the matrices using an internal solver instead of using a commercial solver. The advantage of this model over other existing models is its ease of to use and being inexpensive …

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A Cfd Analysis Of The Download Reduction For The V-22 Osprey Wing., Chris Barnes Jan 2004

A Cfd Analysis Of The Download Reduction For The V-22 Osprey Wing., Chris Barnes

Graduate Theses, Dissertations, and Problem Reports (ETD)

The V-22 tilt rotor aircraft experiences a download in hover mode decreasing the aircraft’s efficiency in this mode. This download is caused by the wing surface obstructing the rotor downwash. The presented research, conducted at West Virginia University (WVU) by the Center for Industrial Research Applications (CIRA), explores the reduction of this download via circulation control. Circulation control is implemented through the use of blowing slots at both the leading and trailing edges of the wing. The analysis was completed using computational fluid dynamics. The Mechanical and Aerospace Engineering department of West Virginia University, in conjunction with The Center for …

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A Feasibility Study On Modeling And Prediction Of Production Behavior In Naturally Fractured Shale Reservoirs., Boyd T. Huls Jan 2004

A Feasibility Study On Modeling And Prediction Of Production Behavior In Naturally Fractured Shale Reservoirs., Boyd T. Huls

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Objective of this study is to demonstrate the feasibility of predicting production characteristics in a Devonian Shale reservoir. This paper discusses the use of a multidimensional, equation of state compositional simulator to develop a prototypical anisotropic shale reservoir. The production data from a group of single well simulations is used to train an Artificial Neural Network to generate production indicators for a well location based on geopositional parameters. This study was conducted to ascertain if an Artificial Neural Network could be adapted to the random uncertainty in naturally fractured shale reservoirs and whether this approach could further the understanding …

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The Influence Attitude Has On Student Achievement In A Developmental College Algebra Course., Michael T. Wilder Jan 2004

The Influence Attitude Has On Student Achievement In A Developmental College Algebra Course., Michael T. Wilder

Graduate Theses, Dissertations, and Problem Reports (ETD)

Faced with unacceptable failure rates in introductory mathematics courses, institutions of higher learning are incorporating methods of placing students into their math courses based upon the students' preexisting math knowledge or skills. West Virginia University is no exception and is currently incorporating a combination of ACT/SAT scores with an internal placement exam to properly place students in the appropriate math course. This method is not working in that failure rates continue to rise in spite of continual increases in placement requirements. Based upon anecdotal evidence by experienced faculty over a ten year period it became clear that factors other than …

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