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Articles 1 - 30 of 276
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Effects Of Ownership And Circulation On Editorial Presentation In West Virginia Newspapers, Matthew E. Umstead
Effects Of Ownership And Circulation On Editorial Presentation In West Virginia Newspapers, Matthew E. Umstead
Graduate Theses, Dissertations, and Problem Reports
This thesis, which focuses on the post-yellow journalism era in West Virginia, further develops the body of research done on the influence of chain ownership in newspapers.;Historically, strong political biases in news coverage were found in the yellow journalism, early 20th century period. And this study finds a conservative bias on the opinion-editorial pages in a traditionally Democratic state with few competing media markets and reliance upon newspapers for local news. This thesis finds ownership status and circulation size affects the balance and variety of feature items presented within the opinion editorial content. Thus, previous research suggesting chain ownership influence …
Development Of An Integrated Project-Level Pavement Management Model Using Risk Analysis, Jennifer A. Reigle
Development Of An Integrated Project-Level Pavement Management Model Using Risk Analysis, Jennifer A. Reigle
Graduate Theses, Dissertations, and Problem Reports
Historically, federal highway funding focused on the construction of new pavements and the upgrading of existing pavements. Today, much of the infrastructure is in place. Therefore, the focus of federal funding is shifting toward pavement maintenance and preservation. With this is mind, highway agencies are directing attention toward pavement preservation strategies that yield the greatest value from existing pavements.;Life cycle cost analysis (LCCA) is a decision-making tool that highway agencies may use in selecting an optimal pavement preservation strategy. Traditionally, LCCA models for pavement management use discrete input values that represent a conservative "best guess" of each parameter. Thus, inherent …
Development And Evaluation Of Glass Fiber-Reinforced Composite/Wood Railroad Crossties, Krit Laosiriphong
Development And Evaluation Of Glass Fiber-Reinforced Composite/Wood Railroad Crossties, Krit Laosiriphong
Graduate Theses, Dissertations, and Problem Reports
Railroad crossties are strengthened by wrapping glass fiber reinforced composites (GFRC). In addition, durability of crossties has been found to have enhanced by reinforcing them with GFRC wraps. In order to reduce the cost, GFRC wraps are not used to wrap the entire length of a crosstie, but only in the region that holds steel plates. The objective of this research is to select compatible adhesive between creosote treated wood and glass fabric, and study the performance of wrapped wooden crossties.;Five primer/resin combinations (Resorcinol Formaldehyde group) were screened for strength and durability of treated wood crossties. To evaluate stiffness and …
Predicting A Detailed Permeability Profile From Minipermeameter Measurements And Well Log Data, Shawn D. Nines
Predicting A Detailed Permeability Profile From Minipermeameter Measurements And Well Log Data, Shawn D. Nines
Graduate Theses, Dissertations, and Problem Reports
Permeability, along with the porosity, comprises one of the two most important properties in petroleum engineering with respect producing hydrocarbon fluids.;It is standard practice in the petroleum industry to determine permeability in one of two ways. These are pressure transient testing and core analysis. Both methods are expensive in their own ways. This research focuses on a way to minimize or limit the need for both of these testing procedures.;The purpose of this research was to utilize well log data, mainly gamma ray and density, Minipermeameter values, and basic information such as depth and spatial coordinates to predict permeability in …
West Virginians' Perceptions And Use Of Complementary Medicine, Joshua David Blevins
West Virginians' Perceptions And Use Of Complementary Medicine, Joshua David Blevins
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to determine how West Virginian's perceive and use complementary medicine. The first objective was to determine the frequency of respondents who had used at least one complementary therapy in the last year. The second objective was to determine the most commonly used complementary therapies among respondents. The third objective was to examine the demographic characteristics of respondents who used complementary therapies. The fourth objective was to determine if certain types of medical problems led to complementary medicine use among respondents. The fifth objective was to show the percentage of users who informed their physician …
Encoding Of Periodic Skin Stimuli By Spinal Dorsal Horn Neurons, Jeffrey J. Lawson
Encoding Of Periodic Skin Stimuli By Spinal Dorsal Horn Neurons, Jeffrey J. Lawson
Graduate Theses, Dissertations, and Problem Reports
The encoding of vibrotactile pitch by neurons of the somatosensory system has been investigated at many levels of the neuraxis. These studies, however, have not extended to the spinal dorsal horn, which is known to process low threshold mechanoreceptive input. The studies presented here were designed to assess the possible role of the dorsal horn in the encoding of vibrotactile pitch. To accomplish this task, dorsal horn single unit extracellular recordings were obtained during periodic electrical and sinusoidal mechanical stimulation of their receptive fields. Techniques used in classifying vibrotactile pitch encoding were similar to those used in other somatosensory nuclei, …
Persistence Of Response Variation And Repetition, Adam Howard Doughty
Persistence Of Response Variation And Repetition, Adam Howard Doughty
Graduate Theses, Dissertations, and Problem Reports
A multiple chained schedule was used to assess the persistence of fixed and variable response sequences. In one terminal link, a single 4-peck response sequence produced food (Repeat) and in the other terminal link a 4-peck response sequence produced food only if it had been occurring infrequently relative to the other 15 possible responses (Vary). Similar response and reinforcement rates occurred in each terminal link. Identical variable-interval 20-s schedules operated in the initial links preceding each terminal link and lower response rates reliably occurred in the initial link preceding the Vary terminal link. After responding stabilized under the multiple chained …
Computational Model Of Ductile Erosion By Single Particle Impact, Chandrakant Rai
Computational Model Of Ductile Erosion By Single Particle Impact, Chandrakant Rai
Graduate Theses, Dissertations, and Problem Reports
Erosion by solid particle impact is a common problem in many industrial applications. It results due to mechanical contact between the particle and the metal surface, which in turn result in potential material losses. Erosion of machine parts by the small solid particle entrained in liquid or gaseous working environment is a serious problem in many industrial applications. Numerous experiments have been conducted to obtain empirical relations for predicting material loss due to these impacts and to arrive at an appropriate material for a particular working environment. But with so many new materials being used for different applications, and operating …
Factors Influencing Brook Trout (Salvelinus Fontinalis ) Abundance In Forested Headwater Streams With Emphasis On Fine Sediment, James Philip Hakala
Factors Influencing Brook Trout (Salvelinus Fontinalis ) Abundance In Forested Headwater Streams With Emphasis On Fine Sediment, James Philip Hakala
Graduate Theses, Dissertations, and Problem Reports
The influence and relative importance of fine sediment on wild brook trout (Salvelinus fontinalis) population size was assessed. Brook trout production in headwater streams was inversely proportional to substrate permeability in one of two years, suggesting substrate composition influenced production. Results suggest the critical fine sediment size for brook trout in this study, is between 0.063 mm and 1.0 mm. Further, fine sediment (<0.063 mm) should not exceed 0.6--1.0% of spawning substrate, or negative population effects may be incurred. Under normal flow conditions, fine sediment was a principal determinant of juvenile trout abundance relative to other physical and biological factors. Adult trout abundance was principally a function of stream discharge, and is potentially further influenced by fine sediment impacts on juvenile recruitment. Spatially restricted food resources, created by drought-induced low flows in year 2 of the study, are believed to have over-powered mechanisms influencing trout abundance under normal flows.
Diversity Of Ectomycorrhizal Fungi On Two Reclaimed Surface Mines Differing In Soil Properties, Betsy S. Kurnik
Diversity Of Ectomycorrhizal Fungi On Two Reclaimed Surface Mines Differing In Soil Properties, Betsy S. Kurnik
Graduate Theses, Dissertations, and Problem Reports
I analyzed community structure of ectomycorrhizal fungi on white pine (Pinus strobus) on two reclaimed surface mines in eastern Ohio. One site was acidic and metal-stressed, the other was alkaline. Completely different community composition was found on the two sites by PCR/ITS/RFLP analyses of field collected mycorrhizae. However, Shannon-Wiener index values indicated that the two communities were equally diverse. A population of isolates of one species common to both sites was obtained from trap cultures planted with white pine. The identity of this species as Wilcoxina mikolae was established through DNA sequencing of the ITS region. The W. mikolae populations …
Synthesis And Characterization Of Metal Oxide Nanoparticles, Heidi Jo Magnone
Synthesis And Characterization Of Metal Oxide Nanoparticles, Heidi Jo Magnone
Graduate Theses, Dissertations, and Problem Reports
Nanoparticles of CuO, Co3O4 and Mn5O 8 were prepared via sol-gel chemical routes. Thermal treatments of the gels were used to obtain particles of different sizes, as determined by the widths of the Bragg lines in x-ray diffraction. To prepare CuO nanoparticles, a Cu(OH)2 gel was first produced by reacting copper nitrate with sodium hydroxide, followed by annealing the gel at temperatures between 160°C to 1,000°C to produce particles in the 6 to 36 nm range. Nanoparticles of Co3O4 in the size range of 9 to 45 nm were prepared in an analogous manner by reacting cobalt nitrate and sodium …
Removal Of Uranium From Aqueous Wastes Using Electrically Charged Carbon Nanofibers, Shannon Lee Stover
Removal Of Uranium From Aqueous Wastes Using Electrically Charged Carbon Nanofibers, Shannon Lee Stover
Graduate Theses, Dissertations, and Problem Reports
The presence of aqueous uranium wastes is a problem in the United States and their treatment/disposal is desirable. Treatment methods have been developed but result in concentration opposed to conversion to a disposable form. This technique involves recovery of uranium as a solid, providing an advantage over other methods. The technique utilizes carbon nanofibers as electrodes which successfully electrosorb uranium ions. Fibers with varying surface characteristics were evaluated in the removal process and all were determined to be equally and extremely effective. Various experimental parameters were evaluated including applied potential, pH, and flow rate. The critical applied potential at which …
Embattled, Mark Tobin Moore
Embattled, Mark Tobin Moore
Graduate Theses, Dissertations, and Problem Reports
Paintings in "Embattled" contain images of Second World War American soldiers from the 1998 motion picture, Saving Private Ryan , as well as from 1960s era DC and Marvel brand comics such as Sgt. Fury and His Howling Commandos, GI Combat, and Sgt. Rock. Also included are photocopies or real pieces of wallpaper, flowery fabrics, and snippets of text from popular culture sources. Specific paintings are discussed in relation to personal motivation regarding the use of selected visual metaphors and collage content, as well as the manipulation of traditional and nontraditional support materials such as canvas or pegboard. Creative influences …
Effects Of Reinforcement History For Following Rules On Sensitivity To Contingencies Of Reinforcement, Carolina Aguilera
Effects Of Reinforcement History For Following Rules On Sensitivity To Contingencies Of Reinforcement, Carolina Aguilera
Graduate Theses, Dissertations, and Problem Reports
The present experiment manipulated subjects' experimental history of reinforcement for following rules in order to assess sensitivity to contingency changes. Ten undergraduate students were presented with four training tasks. Half the subjects were presented with instructions that corresponded with the reinforcement contingencies for these tasks (Accurate Instructions group), while the other half was presented with instructions that did not correspond with the reinforcement contingencies (Inaccurate Instructions group). After meeting stability criteria, unsignaled changes in the contingencies of one of the tasks were made to test for sensitivity. Although the behavior of all the subjects eventually changed after contacting the changed …
Longwall Weighting Events At Phalen Colliery, Nova Scotia, Canada, Robert J. Macdonald
Longwall Weighting Events At Phalen Colliery, Nova Scotia, Canada, Robert J. Macdonald
Graduate Theses, Dissertations, and Problem Reports
Weightings are dynamic phenomenon observed in mines where coal is extracted using the longwall mining method. Weightings are characterized by high convergence rates within the powered supports which maintain roof stability along the longwall face. Rapid convergence is induced by ground pressures that exceed the load capacity of the supports, and forces them to yield. A weighting event need not necessarily impact the mining process negatively, but notable cases exist where weightings have caused extensive damage to roof strata resulting in large roof falls and prolonged periods of lost coal production.;This thesis describes the history of four longwall panels (No's …
Improving Commercial Vehicle Crash Data Quality In West Virginia, Kris Sean Gillespie
Improving Commercial Vehicle Crash Data Quality In West Virginia, Kris Sean Gillespie
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to identify methods to improve commercial carrier crash data in West Virginia including coal trucks. All organizations and agencies involved with commercial carrier safety need ready access to basic data describing the crash-involved operator, vehicle, and environment. Such data are necessary to any programmatic or engineering countermeasures. The basic approach used to accomplish the research objectives involved a series of regional meetings where law enforcement personnel expressed their opinions about ways to improve commercial vehicle crash data quality. These results were then weighted and prioritized. The top five solutions generated at these meetings were: …
Representative Ways To Analyze And Survey Changes In Long-Term Electrocardiographic Recordings, Simona Gabriela Crihalmeanu
Representative Ways To Analyze And Survey Changes In Long-Term Electrocardiographic Recordings, Simona Gabriela Crihalmeanu
Graduate Theses, Dissertations, and Problem Reports
The goal of this research is to explore techniques with which long-term physiologic time-series data can be analyzed, so that relevant changes in physiological signals, particularly the electrocardiogram signal, can be captured, processed, quantified and stored. A new experimental model was developed such that the electrocardiogram can be monitored continuously over thirteen weeks. Cardiotoxicity was progressively induced with doxorubicin in a rabbit model, and electrocardiographic progressions from normal state to diseased state were continuously tracked. Automated methods for analyzing the data were developed to manage and control the extensive electrocardiogram dataset. A significant challenge to this work is the sheer …
Approaches To Creating Anonymous Patient Database, Shijun Shen
Approaches To Creating Anonymous Patient Database, Shijun Shen
Graduate Theses, Dissertations, and Problem Reports
Health care providers, health plans and health care clearinghouses collect patient medical data derived from their normal operations every day. These patient data can greatly benefit the health care organization if data mining techniques are applied upon these data sets. However, individual identifiable patient information needs to be protected in accordance with Health Insurance Portability and Accountability Act (HIPAA), and the quality of patient data also needs to be ensured in order for data mining tasks achieve accurate results. This thesis describes a patient data transformation system which transforms patient data into high quality and anonymous patient records that is …
Evaluation Of Maternal Serum Triple Screen As An Identifier Of Trisomy 21 Pregnancy, Jonnie Ann Lane
Evaluation Of Maternal Serum Triple Screen As An Identifier Of Trisomy 21 Pregnancy, Jonnie Ann Lane
Graduate Theses, Dissertations, and Problem Reports
Maternal serum triple screen is used to identify women less than 35 years of age who are at an increased risk of having a fetus with Down syndrome. The screen identifies 5% of women tested as being at an increased risk but only 2--3% of these women actually have a fetus with chromosome abnormalities, indicating a high false positive rate. Medical records for 900 cases referred for maternal serum triple screen and maternal age were reviewed. The percentages of abnormal karyotypes in the two populations were not significantly different from each other or the expected value. While 3% of all …
Essential Oil Treatments To Control Varroa Destructor Anderson And Trueman 2000 (Formerly Varroa Jacobsoni Oudemans 1904) (Mesostigmata: Varroidae), Maria Mercedes Vargas-Sarmiento
Essential Oil Treatments To Control Varroa Destructor Anderson And Trueman 2000 (Formerly Varroa Jacobsoni Oudemans 1904) (Mesostigmata: Varroidae), Maria Mercedes Vargas-Sarmiento
Graduate Theses, Dissertations, and Problem Reports
Varroa destructor Anderson and Trueman is the most serious pest of the honey bee Apis mellifera L. Varroa mites transmit several viruses, bacteria and fungi to the bees, which results in a condition called parasitic mite syndrome. There are no completely reliable treatments available to control the mite. Fifty-one beehives were artificially infested with varroa mites by using three different methods. Observations on mite population growth during three infestation attempts were made. All colonies were inspected for the presence of the small hive beetle, Aethina tumida Murray, no beetles were found. Thirty-five colonies were used to establish the efficacy of …
Mycorrhizal Roles In Broomsedge Plants Under Phosphorus Limitation And Aluminum Toxicity, Jianchang Ning
Mycorrhizal Roles In Broomsedge Plants Under Phosphorus Limitation And Aluminum Toxicity, Jianchang Ning
Graduate Theses, Dissertations, and Problem Reports
This dissertation examined roles of arbuscular mycorrhizal fungi, of which Glomus clarum is the primary species, in broomsedge (Andropogon virginicus) plants under limited Pi and elevated Al conditions in four studies. The inoculum originated from an acidic coal-mining site in Morgantown, WV. The inoculum of Glomus clarum from INVAM collection, which originated from an alkaline coal-mining site in WV, was also used in two of the studies. Plants were grown in an acid-washed sand culture system with a modified Hoagland's nutrient solution in a growth chamber.;Mycorrhizal fungal colonization pronouncedly enhanced growth of broomsedge plants under limited Pi and/or elevated Al …
Coupled Nonlinear Dynamical Systems, Hongyan Sun
Coupled Nonlinear Dynamical Systems, Hongyan Sun
Graduate Theses, Dissertations, and Problem Reports
In this dissertation, we study coupled nonlinear dynamical systems that exhibit new types of complex behavior. We numerically and analytically examine a variety of dynamical models, ranging from systems of ordinary differential equations (ODE) with novel elements of feedback to systems of partial differential equations (PDE) that model chemical pattern formation. Chaos, dynamical uncertainty, synchronization, and spatiotemporal pattern formation constitute the primary topics of the dissertation. Following the introduction in Chapter 1, we study chaos and dynamical uncertainty in Chapter 2 with coupled Lorenz systems and demonstrate the existence of extreme complexity in high-dimensional ODE systems. In Chapter 3, we …
Characterization Of The Airway Epithelial Bioelectric Mechanisms Associated With The Effects Of Epithelium-Derived Relaxing Factor In Guinea Pig-Isolated Trachea, Richard Alan Johnston
Characterization Of The Airway Epithelial Bioelectric Mechanisms Associated With The Effects Of Epithelium-Derived Relaxing Factor In Guinea Pig-Isolated Trachea, Richard Alan Johnston
Graduate Theses, Dissertations, and Problem Reports
In response to elevated serosal or mucosal tonicity, guinea-pig tracheal epithelium releases the non-nitric oxide, non-prostanoid, epithelium-derived relaxing factor (EpDRF), which subsequently diffuses to the underlying airway smooth muscle to initiate relaxation. Hypertonicity-induced smooth muscle relaxation via EpDRF involves epithelial Na+ and Cl- channels and is preceded by a depolarization of the transepithelial potential difference (Vms). By utilizing two different experimental systems, this study sought to characterize further the airway epithelial bioelectric mechanisms associated with the effects of EpDRF in guinea-pig isolated trachea.;First, this study attempted to elucidate which epithelial ion channels and/or transporters are involved in the depolarization of …
Development Of A Membrane Resistance Based Modeling Framework For Comparison Of Ultrafiltration Processes, David Albert Masciola
Development Of A Membrane Resistance Based Modeling Framework For Comparison Of Ultrafiltration Processes, David Albert Masciola
Graduate Theses, Dissertations, and Problem Reports
A parametric study was conducted to develop a more general modeling framework as a basis for comparison of ultrafiltration membrane modules and separation processes. Discrete experiments were performed to examine the effects of operating parameters on permeate flux behavior in the tubular and high-shear rotary ultrafiltration (HSRUF) systems using a synthetic metal working (MW) fluid as a surrogate feed stream due to its relevance in industrial process and treatment applications. The conventional thin-film model was successfully applied to permeate flux data collected at low feed oil concentrations; however, model predictions at high concentrations were physically meaningless due to the formation …
Assessing Computer -Mediated Communication Discourse Of A Traumatic Brain Injury Survivor, Cheryl L. Fickey Prichard
Assessing Computer -Mediated Communication Discourse Of A Traumatic Brain Injury Survivor, Cheryl L. Fickey Prichard
Graduate Theses, Dissertations, and Problem Reports
Speech-language pathologists and audiologists have begun using computer technology for information storage and retrieval and as one means of providing clinical services to communication-disordered patients. The purpose of this study is to develop a protocol to assess the written communication of brain-injured clients whose communication therapy milieu includes interactions with the world outside the treatment room through computer-mediated communication (CMC).;A panel of experts reviewed a series of discourse analysis procedures and rated their perceptions of validity, reliability, and ease-of use for the procedures as means of evaluating CMC discourse. The Computer-Mediated Communication Evaluation Protocol (CMC-EP) was developed based on the …
Parallelization Of Ecg Template-Based Abnormality Detection, Sherry Lea Kratsas
Parallelization Of Ecg Template-Based Abnormality Detection, Sherry Lea Kratsas
Graduate Theses, Dissertations, and Problem Reports
In order to develop techniques to predict cardiac arrest, long-term study of electrocardiogram (ECG) data needs to be done to detect changes in electrical activity of diseased hearts. In the past, limitations of computing power and storage space restricted the duration of long-term studies to several days. However, with today's technological advancement, data collection can be extended to months or years. The goal of this thesis research is to evaluate several alternatives for distributing the analysis of ECG data over multiple processors. Parallel algorithms utilizing Correlation Waveform Analysis (CWA) were implemented to compare individual heartbeats and form heartbeat templates. The …
Electrospray Ionization Mass Spectrometry For The Analysis Of Proteins And Small Molecules, Gregg A. Pratt
Electrospray Ionization Mass Spectrometry For The Analysis Of Proteins And Small Molecules, Gregg A. Pratt
Graduate Theses, Dissertations, and Problem Reports
In this document methods for the analysis of proteins and small molecules by Electrospray Ionization Mass Spectrometry (ESI-MS) are discussed. Section I contains an introduction to ESI-MS, including a brief history of mass spectrometry, a discussion of the current theories developed to explain the mechanisms at work during the electrospray process, and an explanation of Ion Trap Mass Spectrometry (IT-MS), the type of mass analyzer used for the studies outlined in subsequent chapters.;Section II is devoted to the analysis of proteins by ESI-MS. Chapter 2 gives an overview of protein structure and reviews previous work in the area of protein …
Differences In Groupings Of Students' Academic Achievement, Attendance And Attitude As They Move From A Traditional To A Modified 4 X 4 Block Schedule, Charles Theodore Keenan
Differences In Groupings Of Students' Academic Achievement, Attendance And Attitude As They Move From A Traditional To A Modified 4 X 4 Block Schedule, Charles Theodore Keenan
Graduate Theses, Dissertations, and Problem Reports
The purpose of this investigation is to identify the differences in groups of high school students' achievement, attendance, and attitude as they move from a traditional schedule to a modified 4 x 4 block schedule. The population for this study consisted of all 10th, 11th, and 12th grade students at a high school during the 1998--1999 school year. There were four samples taken from this population, the first, second, third, and fourth quartiles of students. A survey questionnaire was used to determine student attitude. This survey was distributed to all 10th, 11th, and 12th grade students at the high school …
Improving The Simulation Of A Waterflooding Recovery Process Using Artificial Neural Networks, Edison Gil
Improving The Simulation Of A Waterflooding Recovery Process Using Artificial Neural Networks, Edison Gil
Graduate Theses, Dissertations, and Problem Reports
The waterflood performance of the dual five-spot pilot project in the Stringtown oil field, situated in West Virginia, has been studied. A numerical simulator, called BOAST98, was used for the simulation purposes, after developing a reservoir description.;The producing horizon in the field is the Upper Devonian Gordon sandstone, which is characterized by severe heterogeneity due to the depositional environment. Using available core and log data and geological analysis, a reservoir characterization study was done. A preliminary reservoir description based on log porosity-core permeability correlation was improved by developing Artificial Neural Networks (A.N.N.), which incorporates geophysical well log information. These A.N.N.'s …
Restimulation Candidate Selection Using Virtual Intelligence, Khalid Y. Mohamad
Restimulation Candidate Selection Using Virtual Intelligence, Khalid Y. Mohamad
Graduate Theses, Dissertations, and Problem Reports
Due to the importance of well deliverability maintenance, a committee of specialists from Dominion East Ohio and other service companies meets every year to select the wells to be included in the deliverability maintenance plan. The application tool not only help in selecting the wells for deliverability maintenance plan but goes beyond that by designing the most optimum frac recipe.;The purpose of this study is to develop an engineering tool that will help petroleum engineers making a better decision for selecting well candidate and design well restimulation. The project focuses on a gas storage field and use data such as …