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Articles 1981 - 2010 of 2809
Full-Text Articles in Entire DC Network
The Dynamics Involved In Web-Based Learning Environment (Wle) Interface Design And Human-Computer Interactions (Hci): Connections With Learning Performance., Ivana Schnitman
Graduate Theses, Dissertations, and Problem Reports (ETD)
Distance education has always served as an option for students who could not attend school in a traditional way. However, educators know very little about online pedagogy and the related use of Web-based Learning Environment (WLE)s as instructional delivery and support systems for education. To make Web-based Instruction (WBI) a good experience, careful attention should be devoted to the elements that comprise the environment: the pedagogical and technical design components. The goal of this study was to investigate the dynamics involved in the HCI that take place within a WLE. The research objective was to examine the existing views of …
George Crumb's "Pastoral Drone": Analysis And Pedagogical Recommendations., Krista A. Shinew
George Crumb's "Pastoral Drone": Analysis And Pedagogical Recommendations., Krista A. Shinew
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study demonstrates that though Pastoral Drone is Crumb's only foray into the solo organ repertoire it still demonstrates the characteristic traits found in his other compositions and should be a vital piece in a graded repertoire. A detailed analysis of the work illustrates that prime numbers, texture, and timbre all contribute to delineating the form of Pastoral Drone. The paper details the pedagogical benefits to including Pastoral Drone in the repertoire of maturing organists. There are also suggestions for modified organ registrations that not only allow for a more successful performance of Pastoral Drone, but also encourage young organists …
American Standard, John A. Pascarella
American Standard, John A. Pascarella
Graduate Theses, Dissertations, and Problem Reports (ETD)
The work included in my MFA thesis exhibition entitled " American Standard" examines our role as narrative-based individuals within the American culture. In this current body of work I use the photographic image as a director uses the medium of film (moving image). Location scouting, casting, lighting, directing, editing, and processing all become intricate parts of the work, all to lead to a single solitary frozen moment in time that I believe creates a story. Story as created not in a fictional sense, but more in the vein of creative non-fiction, as the stories I tell come from a personal …
Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong
Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong
Graduate Theses, Dissertations, and Problem Reports (ETD)
Deterioration of reinforced concrete bridge decks caused by various environmental conditions and traffic loads is a problem of significant concern. A protective thin overlay of about 2-inches is typically placed over newly constructed concrete bridge decks. Concrete overlay mixtures offer high resistance to traffic loads and environmental attacks, and often serve as leveling finished surfaces. A critical problem however has been the debonding and delamination propagation of the interface between overlay and substrate concrete, as observed in several bridges in West Virginia. Several studies indicated that during early-age of overlay curing, the debonding usually starts at corners or edges of …
A Hairy Predicament: The Problem With Long Hair In The 1960s And 1970s, Andrew Robert Herrick
A Hairy Predicament: The Problem With Long Hair In The 1960s And 1970s, Andrew Robert Herrick
Graduate Theses, Dissertations, and Problem Reports (ETD)
By the mid-1970s long hair worn by much of the American youth evoked little comment and indeed was considered fashionable. But during much of the previous two decades male hair length was a contentious issue that divided the generations. The struggle over hair in many ways epitomized the sixties generation's challenge to authority and their claim to individual rights. During the era, the meaning of long hair changed dramatically from what it was during the fifties. It began as a symbol of youth culture rebellion linked to music. By the latter part of the sixties, however, it became associated with …
Sexual Objectification, Self-Objectification, Self-Efficacy, And Female Identity Development: A Preliminary Study, Kathleen Reilly Coffers
Sexual Objectification, Self-Objectification, Self-Efficacy, And Female Identity Development: A Preliminary Study, Kathleen Reilly Coffers
Graduate Theses, Dissertations, and Problem Reports (ETD)
Sexual and self-objectification, self-efficacy and identity status were investigated using data collected from undergraduate and graduate classes from West Virginia University. Subjects were 267 females, ages 18--23. The four variables were measured as follows: (a) Cultural Sexual Objectification Questionnaire, (b) Self-Objectification Questionnaire, (c) Self-Efficacy Scale and (d) Extended Version of the Objective Measure of Ego Identity Status. Cronbach's Alphas were performed on all measures with good to adequate reliabilities (.69 through .89), with the exception of the identity diffusion subscale which resulted in marginal reliability (.57). Chi-square analyses performed for sexual and self-objectification in each of the four identity statuses …
A Model Of Stabilizer Roll Bearing For A Continuous Hot-Dip Galvanizing Line, Vishnu V. Rachamalla
A Model Of Stabilizer Roll Bearing For A Continuous Hot-Dip Galvanizing Line, Vishnu V. Rachamalla
Graduate Theses, Dissertations, and Problem Reports (ETD)
The short service life of the hardware inside the molten zinc pot is often the cause for the unscheduled shutdown of a galvanizing line. The lifetime of the hardware used in these lines is not only a function of materials used but also on factors such as line speed, sheet tension, bearing contact pressure, bearing alignment, zinc pot temperature, corrosion as a function of pot chemistry, and surface finish of the materials used. Dr. James Snider has developed a comprehensive data file on the wear rate and corrosion properties of currently available bearing materials. Dr. Snider's dissertation research as well …
The Association Between Aggressive Behaviors And Academic Self-Esteem Of Preschool Children, Chrische' Marie Walker
The Association Between Aggressive Behaviors And Academic Self-Esteem Of Preschool Children, Chrische' Marie Walker
Graduate Theses, Dissertations, and Problem Reports (ETD)
The intent of this study was to investigate the association between preschooler's aggressiveness behavior and their academic self-esteem in the classrooms. The participants in this study consisted of 63 preschoolers who attended the West Virginia University Laboratory Nursery School or the Pierpont Christian Preschool during the school year of 2005-2006. The preschoolers were rated by their teachers at each school on their student initiative, social attraction, success/failure, social attraction, self-confidence on the Behavioral Academic Self-Esteem Scale (BASE) and their aggressiveness with peers on the Child Behavior Scale (CBS).;Results of the study indicated that the preschooler's academic self-esteem and aggressive behaviors …
Analysis Of Single-Point Test To Determine Skin Factor, Abbas Belyadi
Analysis Of Single-Point Test To Determine Skin Factor, Abbas Belyadi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Single-point test results can be used to obtain information regarding the degree of damage in gas wells in the gas storage reservoirs. Single-point test is neither time-consuming nor costly to determine the productivity of a well. Furthermore, flow stabilization times would be short in high permeability gas storage reservoirs. Generally, a four-point test is conducted first to establish the deliverability relation. After some period of time, namely one year, a single-point test could be conducted. The results of the single-point and four-point tests can then be compared in order to identify any alteration in well performance.;The objective of this research …
The Study Of Down-Hole Hydro-Cyclone Efficiency In Oil Wells Using Computational Fluid Dynamics, Ahmed A. Yusuf
The Study Of Down-Hole Hydro-Cyclone Efficiency In Oil Wells Using Computational Fluid Dynamics, Ahmed A. Yusuf
Graduate Theses, Dissertations, and Problem Reports (ETD)
Water is by far the largest waste stream associated with oil and gas production and it is unimaginable to find an oil reservoir absolutely free from connate water. Water management has become an important issue of hydrocarbon production, since the produced water increases as the field grows older and the cost of water handling, such as separation, treatment and repair is dramatically increasing. Down-Hole Separation (DOWS) and re-injection results in the production of oil to the surface, while portions of water are injected to the underground formation without ever being lifted to the surface.;DOWS depends on geological characteristics of the …
The Relationship Between Technical Support And Pedagogical Guidance Provided To Faculty And Student Satisfaction In Online Courses, Philip R. Ice
The Relationship Between Technical Support And Pedagogical Guidance Provided To Faculty And Student Satisfaction In Online Courses, Philip R. Ice
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the relationship between levels of technical support and pedagogical guidance provided to faculty and student satisfaction in online courses. Online learning is a rapidly evolving area of education, yet compared to traditional face-to-face learning very little is known about pedagogical techniques and best practices. This study explores the relationships between two factors that have been demonstrated to influence faculty satisfaction, technical support and pedagogical guidance (the predictor variables), and student satisfaction (the criterion variable) in online courses. The study uses quantitative methods to determine if varying levels of predictor variable input are related to changes in the …
The Effect Of Student Self -Described Learning Styles Within Two Models Of Teaching In An Introductory Data Mining Course, Matthew A. North
The Effect Of Student Self -Described Learning Styles Within Two Models Of Teaching In An Introductory Data Mining Course, Matthew A. North
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation examines the roles of learning styles and teaching methodologies within a data mining educational program designed for non-Computer Science undergraduate college students. The experimental design is framed by a discussion of the history and development of data mining and education, as well as a vision for its future.;Data mining is a relatively new discipline which has grown out of the fields of database management and data warehousing, statistics, logic, and decision sciences. Over the course of its approximately 15 year history, data mining has emerged from its genesis within the academic and commercial research and development arenas to …
Differential Binding Of Hnrnp K, L And A2/B1 To An Exonic Splicing Silencer Element Located Within Exon 12 Of Glucose -6 -Phosphate Dehydrogenase Mrna, Brian Nelson Griffith
Differential Binding Of Hnrnp K, L And A2/B1 To An Exonic Splicing Silencer Element Located Within Exon 12 Of Glucose -6 -Phosphate Dehydrogenase Mrna, Brian Nelson Griffith
Graduate Theses, Dissertations, and Problem Reports (ETD)
The expression of most lipogenic enzymes is regulated through the effects of dietary polyunsaturated fatty acids on transcription. However, we have observed that the regulation of Glucose-6-phosphate dehydrogenase (G6PD) by polyunsaturated fatty acids occurs through a novel posttranscriptional mechanism. RNA reporter assays were used to map the cis-acting element by measuring the regulation of each RNA reporter construct transfected into primary rat hepatocytes. All RNA reporter constructs were regulated by polyunsaturated fatty acids with the exception of RNA reporter constructs lacking exon 12. Therefore, polyunsaturated fatty acids regulate the constitutive splicing of G6PD mRNA through a cis-acting element located within …
Modulation Of Gene Expression And Dna Adduct Formation By Chlorophyllin In Human Mammary Cells Exposed To Benzopyrenes, Kaarthik John
Modulation Of Gene Expression And Dna Adduct Formation By Chlorophyllin In Human Mammary Cells Exposed To Benzopyrenes, Kaarthik John
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study investigated metabolic activation by benzopyrenes (BP and B[e]P) in human mammary cells and modulation by chlorophyllin (CHL, a chemopreventive agent). Among 6 NHMEC strains monitored using microarrays, 54 genes were up-regulated and 11 down-regulated by signal log ratio (SLR) ≥ 1.5 on treatment with BP alone. Pre CHL + post BP+CHL treatment up-regulated the expression of 129 genes and down-regulated those of 35 genes by SLR ≥ 1.5. Studies on CYP1 gene induction and BP-DNA adduct formation among 20 NHMECs revealed wide inter-individual variations both in the induction (3-96-fold for CYP1A1 and 4-43-fold for CYP1B1, respectively) and modulation …
Esterase Inhibition By Grapefruit Juice And Its Components Leads To Newly Identified Drug Interactions, Ping Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
Grapefruit juice (GFJ) is well known to be a potent inhibitor of the CYP3A enzyme leading to drug-drug interactions. This study describes a newly identified potential of GFJ in mediating pharmacokinetic drug-drug interactions due to its capability of esterase inhibition. The study demonstrates that GFJ inhibits purified porcine esterase activity towards para-nitrophenylacetate (PNPA) and the prodrugs lovastatin and enalapril. In rat and human hepatic or gut S9 fractions and rat gut lumen GFJ inhibited the hydrolysis of enalapril and lovastatin, which are known to be metabolized principally by esterases, with lovastatin metabolized also by CYP3A. In Caco-2 cells, permeability of …
The Effects Of Age, Instructions, And Problem Content On Everyday Problem -Solving Outcome Using Two Scoring Procedures, Tara L. Neely
The Effects Of Age, Instructions, And Problem Content On Everyday Problem -Solving Outcome Using Two Scoring Procedures, Tara L. Neely
Graduate Theses, Dissertations, and Problem Reports (ETD)
Prior literature has relied on varied methodology to infer conclusions about adult problem solvers; possibly leading to erroneous assumptions about everyday problem-solving performance in adulthood. The present study examined everyday problem-solving performance of 133 younger, middle-aged, and older adults. The goal of the study was to investigate whether different scoring procedures (number vs. strategy type) or participant instructions (self target vs. others target) affected how adults performed on two types of open-ended problem-solving vignettes (home vs. friend problem domains). Differential age patterns were found when comparing the number and types of strategies reported. When assessing total number of solutions generated, …
The Extrinsic Apoptotic Pathway In Aged Skeletal Muscle: Roles Of Tumor Necrosis Factor-Alpha And Interleukin-15, Emidio E. Pistilli
The Extrinsic Apoptotic Pathway In Aged Skeletal Muscle: Roles Of Tumor Necrosis Factor-Alpha And Interleukin-15, Emidio E. Pistilli
Graduate Theses, Dissertations, and Problem Reports (ETD)
Apoptosis is implicated in the loss of skeletal muscle mass following periods of reduced activity (i.e.-disuse) as well as during the normal aging process (i.e.-sarcopenia). Aging is also characterized by elevations in circulating cytokines, specifically TNF-alpha, which has been associated with the sarcopenic process. The specific signaling components that participate in the pro-apoptotic pathway downstream of the type I TNF receptor (i.e.-extrinsic apoptotic pathway) within skeletal muscle have not been clarified. Additionally, few studies have been performed with the aim of disrupting this apoptotic pathway, and thereby sparing muscle mass in the aged. Therefore, the purposes of this dissertation were …
Assessment And Evaluation Of Noise Controls On Roof Bolting Equipment And A Method For Predicting Sound Pressure Levels In Underground Coal Mining, Rudy J. Matetic
Assessment And Evaluation Of Noise Controls On Roof Bolting Equipment And A Method For Predicting Sound Pressure Levels In Underground Coal Mining, Rudy J. Matetic
Graduate Theses, Dissertations, and Problem Reports (ETD)
Over-exposure to noise remains a widespread and serious health hazard in the U.S. mining industries despite 25 years of regulation. Every day, 80% of the nation's miners go to work in an environment where the time weighted average (TWA) noise level exceeds 85 dBA and more than 25% of the miners are exposed to a TWA noise level that exceeds 90 dBA, the permissible exposure limit (PEL). Additionally, MSHA coal noise sample data collected from 2000 to 2002 show that 65% of the equipment whose operators exceeded 100% noise dosage comprise only seven different types of machines; auger miners, bulldozers, …
Phytoformations Of Silver And Gold Nanoparticles, Brooke A. Fridley
Phytoformations Of Silver And Gold Nanoparticles, Brooke A. Fridley
Graduate Theses, Dissertations, and Problem Reports (ETD)
Stevia and red beet suspension cultures were examined for uptake of silver from AgNO3 solution. Alfalfa and mung bean sprouts were also studied for silver accumulation when grown in AgNO3 solution. AA analysis confirmed the presence of silver in both sprouts and suspension cultures after exposure to AgNO3 solution, despite the toxic effects of silver on the living matter.;Extract from Pelargonium graveolens underwent reaction with both AgNO3 and KAuCl4 to form silver or gold nanoparticles. For the reaction with AgNO3, light was required to initiate the reaction. In contrast, reactions producing gold nanoparticles did not require light to react. Oxygen …
Determining Low Permeability Formation Properties From Absolute Open Flow Potential, Fatemeh Belyadi
Determining Low Permeability Formation Properties From Absolute Open Flow Potential, Fatemeh Belyadi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Absolute Open Flow Potential (AOFP) is often the only productivity information available from low permeability gas formations particularly in the Appalachian Basin. Absolute Open Flow Potential (AOFP) is commonly evaluated through a single point test due to its cost effectiveness. In low permeability reservoirs, the time required for obtaining stabilized flow rate is often very long. Therefore, stabilized AOFP may not be achieved in short tests. Furthermore, most low permeability gas wells are hydraulically fractured to improve their productivity. Therefore, the post-fracture measured AOFP could be significantly influenced by fracture properties.;The objective of this was to develop a methodology to …
Ground Penetrating Radar (Gpr) Based System For Nondestructive Detection Of Interior Defects In Wooden Logs, Dayakar Devaru
Ground Penetrating Radar (Gpr) Based System For Nondestructive Detection Of Interior Defects In Wooden Logs, Dayakar Devaru
Graduate Theses, Dissertations, and Problem Reports (ETD)
A previous study used GPR to scan logs and the scanned data was processed and analyzed using RADAN software. This data processing using RADAN software needs an expert and is time consuming. Also, the output from RADAN software cannot be used to generate manufacturing process instructions since it will be in the form of an image. For online implementation of GPR scanning, a quick automated defect detection system with numerical output is required.;To incorporate automated defect detection system, a MATLAB algorithm has been developed. Validation of the MATLAB algorithm output has been done by comparing with the results of RADAN …
Nondestructive Evaluation Of Frp Wrapped Concrete Cylinders Using Infrared Thermography And Ground Penetrating Radar, Shasanka Shekhar Dutta
Nondestructive Evaluation Of Frp Wrapped Concrete Cylinders Using Infrared Thermography And Ground Penetrating Radar, Shasanka Shekhar Dutta
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objectives of this research are: (a) to investigate the feasibility of using Infrared Thermography (IRT) and Ground Penetrating Radar (GPR) for detecting debonds in Fiber Reinforced Polymer (FRP) wrapped columns, and (b) to study the effect of the debonds on reduction in compressive strength of FRP wrapped columns.;All laboratory tests were conducted on concrete cylinders of size 6" x 12" (152.4 mm x 304.8 mm) in which air-filled and water-filled debonds of various sizes were inserted. Air-filled debonds were made by cutting plastic sheets into the desired sizes whereas water-filled debonds were made by injecting water in custom made …
Recognition Capacity Of Biometric-Based Systems, Francesco P. Nicolo
Recognition Capacity Of Biometric-Based Systems, Francesco P. Nicolo
Graduate Theses, Dissertations, and Problem Reports (ETD)
Performance of biometrics-based recognition systems depends on various factors: database quality, image preprocessing, encoding techniques, etc. Given a biometric database and a selected encoding method, the capability of a recognition system is limited by the relationship between the number of classes that the recognition system can encode and the length of encoded data describing the template at a specific level of distortion. In this work, we evaluate constrained recognition capacity of biometric systems under the constraint of two global encoding techniques: Principal Component Analysis and Independent Component Analysis. The developed methodology is applied to predict capacity of different recognition channels …
Software Application For Emergency Responders, Safer 2.0, Saritha Reddy Potula
Software Application For Emergency Responders, Safer 2.0, Saritha Reddy Potula
Graduate Theses, Dissertations, and Problem Reports (ETD)
The SAFER 2.0 was developed as a web based information system for the First Responders involved in dealing with the hazardous materials incidents. The software tool enables First Responders to view and identify the substances involved in a hazard via a secure Internet connection. The tool also aids in identifying the unknown substances based on the physical description (color, odor, texture, gas/liquid, etc.), symptoms and other information available at the site of the incident. The system is based on the 2004 North American Emergency Response Guidebook (ERG2004) and NIOSH Pocket Guide (NPG). ERG2004 was developed for use by firefighters, police, …
Analysis Of Photonic Crystal Defects For Biosensing Applications, Naveen Kumar Paturi
Analysis Of Photonic Crystal Defects For Biosensing Applications, Naveen Kumar Paturi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Photonic Crystals (PCs) have been the subject of intense study from their inception. These structures provide precise control of optical transmission properties through the choice of their periodic lattice parameters and materials with which they are fabricated. The sensitivity of optical properties of photonic crystals to the changes in refractive index at one or more lattice sites makes these structures potentially very attractive devices for developing a biosensor. Very small changes in the refractive index of one or more defect sites can be sensed accurately using these nano size structures. This work deals with the modeling and theoretical evaluation of …
The Effects Of Social Bond And Neutralization On Juvenile Drug Usage, Adam Shields
The Effects Of Social Bond And Neutralization On Juvenile Drug Usage, Adam Shields
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study is to examine the effects of social bond and neutralization on juvenile drug usage. Part I of the Evaluation of the Gang Resistance Education and Training (G.R.E.A.T.) Program in the United States (1995-1999) was used for the data analysis. When controlling for other variables, the data revealed that juveniles who accept neutralization of stealing and juveniles who are involved with other delinquent peers are more likely to use illegal drugs. In addition, the data revealed that an adolescent's gender was significant in determining drug usage. The results generally support Hirschi's (1969) Social Bond Theory, and …
Measuring Chemotaxis In Borrelia Burgdorferi The Lyme Disease Spirochete, Richard Gerrit Bakker
Measuring Chemotaxis In Borrelia Burgdorferi The Lyme Disease Spirochete, Richard Gerrit Bakker
Graduate Theses, Dissertations, and Problem Reports (ETD)
Borrelia burgdorferi is the spirochete causative agent of Lyme disease. The chemotaxis and motility systems of these bacteria are far less well described than that of Escherichia coli or Salmonella enterica. This dissertation explores the role of the CheA proteins in the chemotactic response and describes the first defined attractants for B. burgdorferi.;In order to test hypotheses, we developed or optimized three protocols. To characterize the motion of cells, two motion tracking systems were optimized. The Hobson BacTracker allowed for tracking cell motions in real time. This hardware/software chimera, while powerful for the specific application, utilizes a cumbersome interface. Therefore, …
Media Representation And Portrayal Of African-American Athletes, Justin Zackal
Media Representation And Portrayal Of African-American Athletes, Justin Zackal
Graduate Theses, Dissertations, and Problem Reports (ETD)
The racial composition of athletes competing at major colleges and in professional sports in America is disproportioned to the general population and journalists that cover their sports. With African-Americans accounting for such a large contingent of athletes, how their race is perceived by society is often predicated on the coverage they receive. The purpose of this study is to look at the importance of media coverage of African-American athletes, and to show if White media scrutinize African-American athletes more than they do White athletes. The misrepresentation of African-American athletes in the press box could mean an unequal playing field in …
Nondestructive Evaluation Of Fiber Reinforced Polymer Bridge Decks Using Ground Penetrating Radar And Infrared Thermography, Cheng Lok Hing
Nondestructive Evaluation Of Fiber Reinforced Polymer Bridge Decks Using Ground Penetrating Radar And Infrared Thermography, Cheng Lok Hing
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent studies have focused on the development of Fiber Reinforcement Polymer (FRP) as an alternative construction material for highway bridge decks.;The goal of this study was to explore the viability of nondestructive testing of FRP bridge decks using infrared thermography (IRT) and ground penetrating radar (GPR).;All tests were conducted on a 6' x 3' (1828.8mm x 914.4mm) low profile (4'' or 101.6mm deep) FRP bridge deck and a 3' x 2' (914.4mm x 609.6mm) low profile FRP bridge deck specimen with embedded delaminations. Replaceable wearing surface modules with air-voids of varying sizes were used to simulate air-filled debonds between the …
It Takes A Town To Build A Trail: Relationships Between Nonprofit Organizations And Local Governments In Rail-Trail And Greenway Development In Three West Virginia Communities, Kelly L. Pack
Graduate Theses, Dissertations, and Problem Reports (ETD)
As more communities across the country are developing rail-trails and greenways, relationships among community-based nonprofit organizations and local government entities evolve during trail development. Twenty-three participants from the nonprofit and local government sectors in three West Virginia municipalities were interviewed about their relationships and experience in rail-trail and greenway development. This qualitative analysis employs a grounded theory framework and reveals several practical and theoretical findings. Perceived benefits and costs of trail development reported by participants provided a context for how participants relayed experiences indicative of their political and built environments. Factors that constrain or facilitate relationship building between nonprofit organizations …